A garage door lifting aid
By incorporating a slow-guiding mechanism and a buffer structure into the garage door lifting auxiliary device, the problems of friction noise and damage during the lifting and lowering of roller shutter garage doors are solved, achieving the effects of reducing noise and extending the life of the door panel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANSHUI BOHUA IND & TRADE CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-06-19
AI Technical Summary
Existing roller shutter garage doors generate noise and damage due to friction during raising and lowering, and the roller shutter door panels are easily damaged.
The garage door lifting auxiliary device is equipped with a buffer mechanism, bent rubber blocks, rubber column plates and hollow buffer strips. Rubber buffer cylinders and hollow buffer strips are used for friction buffering to reduce friction noise and damage.
It effectively reduces friction noise between the roller shutter door panel and the door guide rail, protects the roller shutter door panel, and extends its service life.
Smart Images

Figure CN224379728U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of garage door technology, and in particular to a garage door lifting auxiliary device. Background Technology
[0002] Garage doors are doors used to enclose garages. They play an important role in ensuring vehicle safety, facilitating vehicle entry and exit, and enhancing the overall aesthetics of buildings. Some residential garages are usually equipped with roller shutter doors as garage doors. When roller shutter garage doors are rolled up and down, the roller shutter door panels will rise and fall as needed along the guide rail grooves.
[0003] Existing roller shutter garage doors use guide rails for lifting and lowering assistance. These rails typically only have simple rubber strips installed inside to buffer the curtain panel during lifting and lowering. When the roller shutter door panel is rolled up and down, noise is easily generated due to friction between the curtain panel and the guide rail, and the roller shutter door panel is also easily damaged due to friction. Therefore, we propose a garage door lifting and lowering assistance device. Utility Model Content
[0004] The main objective of this invention is to provide an auxiliary device for raising and lowering garage doors. A buffer mechanism, bent rubber blocks, rubber columns, and hollow buffer strips are installed at the door guide rail for this purpose. When the garage door rolls up or down, the friction between the door guide rail and the roll-up door is effectively buffered by the bent rubber blocks, rubber columns, and hollow buffer strips. The top of the door guide rail is cushioned by the rubber buffer cylinder of the buffer mechanism, which supports the roll-up door for buffering. This significantly reduces the noise generated by friction between the garage door roll-up door and the door guide rail. Furthermore, in terms of protecting the roll-up door, the rubber buffer cylinder and hollow buffer strips deform under pressure when in contact with the door panel, and the hollow rubber columns of the rubber columns also provide a buffering effect. This greatly reduces frictional damage to the roll-up door during raising and lowering, extending its service life and effectively solving the problems in the prior art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A garage door lifting auxiliary device includes a door guide rail and a buffer mechanism. The buffer mechanism includes a bending plate, a support ring seat, a bolt shaft, a support cylinder, a bearing, and a rubber buffer cylinder. The top rail plate of the door guide rail has a bending plate that protrudes outward from one side. Support ring seats are symmetrically fixed at the outer end of the bending plate. A bolt shaft is inserted between the two sets of support ring seats, and a support cylinder is fitted at the bolt shaft between the support ring seats. Bearings are symmetrically fitted inside both ends of the support cylinder, and a bolt shaft is inserted into the inner ring of the bearing. A flange nut is screwed onto the end of the bolt shaft that passes through the support ring seat. A rubber buffer cylinder is fitted and bonded to the outer side of the support cylinder. A rubber column plate is bonded to the surface of the convex ribs inside the door guide rail. Hollow buffer strips are symmetrically bonded between opposite plates on the inner side of the door guide rail away from its own convex ribs. A bending rubber block extending into the door guide rail is bonded to the surface of the bending plate.
[0007] Furthermore, the two ends of the support cylinder are symmetrically provided with shaft grooves, and the outer rings of the bearings are symmetrically fitted in the groove cavities. The inner rings of the bearings are interference-fitted with the cylinder bore of the support cylinder by a bolt shaft.
[0008] By adopting the above technical solution, after the bearing is interference-fitted into the shaft groove of the support cylinder, the bolt body of the bolt shaft can pass through the bearing and the cylinder hole of the support cylinder, so that the support cylinder can rotate smoothly at the bolt shaft with the help of the bearing.
[0009] Furthermore, the bolt head is integrally formed with a threaded bolt body at the end of the bolt shaft that passes through the support ring seat, and the diameter of the bolt body is smaller than the diameter of the bolt shaft body. A flange nut is screwed onto the outside of the bolt head.
[0010] By adopting the above technical solution, after the shaft of the bolt passes through the two sets of rings of the support ring seat, a flange nut can be screwed onto its bolt head for anti-reverse installation. At the same time, when the bolt is inserted into the cylinder hole of the bearing and the support cylinder, its smaller bolt head can easily pass out of the cylinder hole of the bearing and the support cylinder.
[0011] Furthermore, the outer side of the support cylinder has protruding ribs, and the rubber buffer cylinder outside the support cylinder has recessed grooves for securing the ribs.
[0012] By adopting the above technical solution, the support cylinder is internally positioned and bonded to the groove of the rubber buffer cylinder by means of ribs, thereby improving the clamping firmness between the support cylinder and the rubber buffer cylinder.
[0013] Furthermore, the vertical adhesive plate of the adhesive column plate is bonded to the surface of the convex rib strip inside the door guide rail, and hollow adhesive columns are raised on the surface of the vertical adhesive plate of the adhesive column plate.
[0014] By adopting the above technical solution, after the glued column plate is bonded to the surface of the convex rib strip inside the door guide rail with vertical glued plate, the hollow glued column of the glued column plate can contact the garage roller shutter door panel for stress buffering.
[0015] Furthermore, the vertical horizontal strips of the hollow buffer strip are bonded to the inner wall of the door guide rail, and a hollow buffer cavity is formed through the strip.
[0016] By adopting the above technical solution, after the vertical and horizontal strips of the hollow buffer strip are bonded inside the door guide rail, their hollow buffer cavity allows the strip itself to be cushioned by deformation under force after contacting the garage roller shutter door panel.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] This utility model incorporates a buffer mechanism, bent rubber blocks, rubber column plates, and hollow buffer strips at the door guide rail for garage door lifting and lowering. When the garage door roll-up and lowering is performed, the friction between the door guide rail and the roll-up door is effectively buffered by the bent rubber blocks, rubber column plates, and hollow buffer strips. The top of the door guide rail is buffered and supported by the rubber buffer cylinder of the buffer mechanism for buffering the roll-up and lowering, thereby greatly reducing the noise generated by the friction between the garage door roll-up door and the door guide rail.
[0019] Furthermore, in terms of protecting the roller shutter door panel, the rubber buffer cylinder and hollow buffer strip will deform under force when in contact with the door panel, and the hollow rubber column of the rubber column plate can also play a buffering role, which greatly reduces the friction damage to the roller shutter door panel during the lifting and lowering process and extends the service life of the roller shutter door panel. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of a garage door lifting auxiliary device according to the present invention.
[0021] Figure 2 This is a schematic diagram showing the disassembly of the buffer structure of a garage door lifting auxiliary device according to this utility model.
[0022] Figure 3 This is an exploded view of the slow-guiding mechanism of a garage door lifting auxiliary device according to this utility model.
[0023] In the diagram: 1. Door guide rail; 2. Slowing mechanism; 3. Bending plate; 4. Support ring seat; 5. Bolt shaft; 6. Bolt head; 7. Flange nut; 8. Support cylinder; 9. Bearing; 10. Shaft groove; 11. Rubber buffer cylinder; 12. Bending rubber block; 13. Rubber column plate; 14. Hollow slowing bar. Detailed Implementation
[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0025] like Figure 1-3As shown, a garage door lifting auxiliary device includes a door guide rail 1 and a buffer mechanism 2. The buffer mechanism 2 includes a bending plate 3, a support ring seat 4, a bolt shaft 5, a support cylinder 8, a bearing 9, and a rubber buffer cylinder 11. The top rail plate of the door guide rail 1 has a bending plate 3 that protrudes outward from one side, and the support ring seat 4 is symmetrically fixed at the outer end plate surface of the bending plate 3. A bolt shaft 5 is inserted between the two sets of support ring seats 4, and a support cylinder 8 is fitted at the bolt shaft 5 between the support ring seats 4. Bearings 9 are symmetrically installed inside the two ends of the cylinder 8, and a bolt 5 is inserted through the inner ring of the bearing 9. A flange nut 7 is screwed onto the end of the bolt 5 that passes through the support ring seat 4. A rubber buffer cylinder 11 is attached to the outer side of the cylinder body of the support cylinder 8. A rubber column plate 13 is attached to the surface of the convex rib strip inside the door guide rail 1. Hollow buffer strips 14 are symmetrically attached between the opposing plates on the inner side of the door guide rail 1 away from its own convex rib strip. A bending rubber block 12 that extends into the door guide rail 1 is attached to the surface of the bending guide plate 3.
[0026] The two ends of the support cylinder 8 are symmetrically provided with shaft grooves 10, and the outer ring of the bearing 9 is symmetrically fitted in the groove cavity of the shaft groove 10. The inner ring of the bearing 9 is interference-fitted with the cylinder hole of the support cylinder 8 with a bolt shaft 5.
[0027] By adopting the above technical solution, after the bearing 9 is interference-fitted into the shaft groove 10 of the support cylinder 8, the bolt body of the bolt shaft 5 can pass through the bearing 9 and the cylinder hole of the support cylinder 8, so that the support cylinder 8 can rotate smoothly at the bolt shaft 5 with the help of the bearing 9.
[0028] Wherein, the bolt head 6 is integrally formed at the end of the bolt shaft 5 that passes through the support ring seat 4, and the bolt body diameter of the bolt head 6 is smaller than the shaft body diameter of the bolt shaft 5. A flange nut 7 is screwed onto the outside of the bolt head 6.
[0029] By adopting the above technical solution, after the shaft of the bolt 5 passes through the two sets of rings of the support ring seat 4, the flange nut 7 can be screwed onto its bolt head 6 for anti-reverse installation. At the same time, when the bolt 5 is inserted into the cylinder hole of the bearing 9 and the support cylinder 8, its smaller bolt head 6 can easily pass out of the cylinder hole of the bearing 9 and the support cylinder 8.
[0030] Among them, the outer side of the cylinder body of the support cylinder 8 has protruding ribs, and the rubber buffer cylinder 11 outside the support cylinder 8 has a groove for clamping the ribs.
[0031] By adopting the above technical solution, the support cylinder 8 is inserted into the groove of the rubber buffer cylinder 11 with the ribs for internal positioning and bonding, thereby improving the fastening of the support cylinder 8 and the rubber buffer cylinder 11.
[0032] The vertical adhesive plate of the adhesive column plate 13 is bonded to the surface of the convex rib strip inside the door guide rail 1, and hollow adhesive columns are raised on the surface of the vertical adhesive plate of the adhesive column plate 13.
[0033] By adopting the above technical solution, after the glue column plate 13 is bonded to the surface of the convex rib strip in the door guide rail 1 with the vertical glue plate, the hollow glue column of the glue column plate 13 can contact the garage roller shutter door panel for force buffering.
[0034] The vertical horizontal strip of the hollow buffer strip 14 is bonded to the inner wall of the door guide rail 1, and a hollow buffer cavity is opened through the strip of the hollow buffer strip 14.
[0035] By adopting the above technical solution, after the vertical and horizontal strips of the hollow buffer strip 14 are bonded in the door guide rail 1, its hollow buffer cavity allows the strip itself to be cushioned by deformation under force after contacting the garage roller shutter door panel.
[0036] It should be noted that this utility model is a garage door lifting auxiliary device. By setting a slowing mechanism 2, a bent rubber block 12, a rubber column plate 13, and a hollow slowing strip 14 at the door guide rail 1 for garage door lifting assistance, after the bearings 9 are symmetrically installed in the shaft groove 10 of the support cylinder 8, the rubber buffer cylinder 11 can be sleeved and bonded to the outside of the support cylinder 8. Then, the support cylinder 8 and the rubber buffer cylinder 11 can be inserted into the diameter of the support ring seat 4. After the bolt shaft 5 passes through the support ring seat 4, the cylinder hole of the support cylinder 8, and the inner ring of the bearing 9, the bolt head 6 of the bolt shaft 5 protrudes from the support ring seat 4. Tighten the flange nut 7 to prevent backlash. Then, hollow buffer strips 14 can be symmetrically bonded inside the door guide rail 1, while bent rubber blocks 12 can be bonded to the bending guide plate 3 behind the support ring seat 4. Simultaneously, rubber column plates 13 are bonded vertically to the surface of the convex ribs inside the door guide rail 1. The garage roller shutter door panel can then enter the door guide rail 1 from the surface of the rubber buffer cylinder 11 along the bent rubber blocks 12. The hollow buffer strips 14 and rubber column plates 13 symmetrically contact the garage roller shutter door panel inside the door guide rail 1, allowing the garage roller shutter door panel to enter the door guide rail 1 for raising and lowering. During normal rolling up and down operation of the garage door, the door moves between the hollow buffer strip 14 and the rubber column plate 13, creating a buffer structure between the door guide rail 1 and the door panel to cushion friction and prevent noise and damage from contact friction between the door guide rail 1 and the door panel. When the curtain panel near the top of the door panel moves at the top of the door guide rail 1, it can be buffered and pulled out along the bent rubber block 12. Then, the top of the door guide rail 1 is supported and slowed by the rubber buffer cylinder 11 between the outer support ring seat 4 of the bent guide plate 3. When the rubber buffer cylinder 11 rotates, it can work with its own rubber material to buffer the movement. The auxiliary curtain is buffered and rolled up inside the roller shutter structure of the roller shutter door, which greatly reduces the friction damage and friction noise when the roller shutter garage door rises and falls in the door guide rail. In the attached drawings of this utility model, only a section of the door guide rail 1 near the roller shutter door retraction structure is shown. The complete door guide rail 1 can be equipped with rubber column plates 13 and hollow buffer strips 14 of appropriate length as needed according to the rising and falling range of the roller shutter door panel.
[0037] It should be noted that this utility model is a garage door lifting auxiliary device. All components in this utility model are known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A garage door lifting auxiliary device, comprising a door guide rail (1), characterized in that: It also includes a buffer mechanism (2), which includes a bending plate (3), a support ring seat (4), a bolt shaft (5), a support cylinder (8), a bearing (9), and a rubber buffer cylinder (11). The top rail plate of the door guide rail (1) is bent outward and protrudes with a bending plate (3). The outer end plate of the bending plate (3) is symmetrically fixed with a support ring seat (4). A bolt shaft (5) is inserted between the two sets of ring seats of the support ring seat (4). A support cylinder (8) is fitted at the bolt shaft (5) between the support ring seats (4). The two ends of the support cylinder (8) are symmetrically arranged inside. A bearing (9) is installed, and a bolt (5) is inserted through the inner ring of the bearing (9). A flange nut (7) is screwed onto the end of the bolt (5) that passes through the support ring seat (4). A rubber buffer cylinder (11) is attached to the outer sleeve of the support cylinder (8). A rubber column plate (13) is attached to the surface of the convex rib inside the door guide rail (1). Hollow buffer strips (14) are symmetrically attached between the inner and opposite plates of the door guide rail (1) away from its own convex rib. A bending rubber block (12) that extends into the door guide rail (1) is attached to the surface of the bending guide plate (3).
2. The garage door lifting auxiliary device according to claim 1, characterized in that: The two ends of the support cylinder (8) are symmetrically provided with shaft grooves (10), and the outer ring of the bearing (9) is symmetrically fitted in the groove cavity of the shaft groove (10). The inner ring of the bearing (9) is interference-fitted with the cylinder hole of the support cylinder (8) by a bolt shaft (5).
3. The garage door lifting auxiliary device according to claim 1, characterized in that: The bolt shaft (5) has a threaded bolt body with a bolt head (6) integrally formed at the end of the shaft that passes through the support ring seat (4), and the bolt body diameter of the bolt head (6) is smaller than the shaft body diameter of the bolt shaft (5). A flange nut (7) is screwed onto the outside of the bolt head (6).
4. The garage door lifting auxiliary device according to claim 1, characterized in that: The outer side of the support cylinder (8) has raised ribs, and the rubber buffer cylinder (11) outside the support cylinder (8) has recessed grooves for holding the ribs.
5. The garage door lifting auxiliary device according to claim 1, characterized in that: The vertical rubber plate of the rubber column plate (13) is bonded to the surface of the convex rib strip inside the door guide rail (1), and hollow rubber columns are raised on the surface of the vertical rubber plate of the rubber column plate (13).
6. The garage door lifting auxiliary device according to claim 1, characterized in that: The vertical strip of the hollow buffer strip (14) is bonded to the inner wall of the door guide rail (1), and a hollow buffer cavity is opened through the strip of the hollow buffer strip (14).