Reinforced garage door structure capable of resisting internal and external pressure difference

Abstract

The utility model relates to the technical field of garage doors, in particular to a reinforced garage door structure capable of resisting internal and external pressure difference, which comprises a rolling box, a door curtain and a guide rail, a rolling shaft and a driving part are arranged in the rolling box, the driving part drives the rolling shaft to wind / unwind the door curtain, the door curtain is formed by connecting a plurality of curtain pieces which are arranged in the door width direction and distributed in the door height direction, each curtain piece is of an interlayer structure with a functional cavity inside, a prestress piece arranged in the length direction of each curtain piece is arranged in each functional cavity, and each prestress piece is of an arc-shaped structure. The convex face of the prestress piece faces the inner side of the garage door, and when the prestress piece is installed in the functional cavity, the prestress piece is in a compressed state, so that the compressed prestress piece can apply force like deformation in the door to the curtain piece, the force of deformation of the curtain piece towards the outside due to the air pressure difference is counteracted, and the overall internal and external pressure difference resisting capacity of the garage door is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of garage doors, and more particularly to a garage door structure for enhancing resistance to internal and external pressure differences. Background Art

[0002] Garage doors are mainly classified into: sectional garage doors and rolling garage doors. They play a convenient and fast opening role, especially in places where the door opening is large and it is inconvenient to install a ground door body. Among them, the rolling garage door has a simple structure and occupies a small installation space, so it is widely used. The slats of the rolling garage door are arranged in a sandwich structure and filled with polyurethane inside, so that the rolling garage door has good heat insulation, sound insulation and heat preservation performance, playing a better protective role.

[0003] At present, in order to facilitate the winding of the door curtain, the door curtain is made of a plurality of relatively thin and light slats connected to each other, and the span of the slats is large, resulting in weak rigidity of the door curtain. Under the action of external forces, the door curtain is prone to deformation. In windy weather, the air flow velocity outside the garage is fast, while the air flow velocity inside the garage is slow, resulting in the air pressure inside the garage being greater than the air pressure outside the garage. Under the action of the pressure difference, the door curtain will bend and deform towards the outside of the garage, and even break away from the guide rail, with weak wind resistance. Summary of the Utility Model

[0004] In view of the technical problems existing in the garage door in the prior art, the first aspect of the present utility model proposes a garage door structure for enhancing resistance to internal and external pressure differences, including:

[0005] A winding box, inside which a winding shaft and a driving component are provided;

[0006] A door curtain, one end of which is connected to the winding shaft, and the driving component winds / unwinds the door curtain by driving the winding shaft;

[0007] Two guide rails, symmetrically arranged below both ends of the winding box, and both sides of the door curtain extend into the guide rails so that the door curtain can slide along the guide rails;

[0008] Wherein, the door curtain is composed of a plurality of slats arranged along the door width direction and distributed along the door height direction, and the slats are arranged in a sandwich structure with a functional cavity inside;

[0009] A prestressed sheet arranged along the length direction of the slat is provided inside the functional cavity. The prestressed sheet is arranged in an arc structure, and the convex surface of the prestressed sheet faces the inside of the garage door, and can apply prestress to resist the wind pressure to the slat.

[0010] Preferably, fixing parts are provided at both ends of the slat for fixing both ends of the prestressed sheet on the side of the slat close to the outside of the door.

[0011] Preferably, the fixing member is a rivet, and corresponding holes are provided at both ends of the curtain sheet and the prestressed sheet.

[0012] Preferably, a top contact member is provided at the middle position of the curtain sheet along the length direction, for restricting the middle position of the prestressed sheet to fit against the inner side of the curtain sheet close to the door.

[0013] Preferably, the top contact member is a screw, and a nut is fixed to the inner side wall of the curtain sheet close to the outside of the door. The top contact member is threadedly connected to the nut and extends to the inner wall of the curtain sheet, abutting the middle position of the prestressed sheet against the inner side of the curtain sheet close to the door.

[0014] Preferably, the material of the prestressed sheet is spring steel.

[0015] Preferably, a plurality of prestressed sheets parallel to each other are provided inside the functional cavity, and the plurality of prestressed sheets are distributed along the height direction of the functional cavity.

[0016] Preferably, the thickness of the prestressed sheet is 1.0 - 2.0 mm.

[0017] Preferably, a first connecting portion and a second connecting portion corresponding to each other are respectively provided at both ends of the curtain sheet in the width direction, and adjacent two curtain sheets are connected to each other through the first connecting portion and the second connecting portion.

[0018] Preferably, the thickness of the functional cavity is 10.0 - 12.0 mm.

[0019] Compared with the prior art, the advantages of the present utility model are as follows:

[0020] By arranging prestressed sheets arranged along the length direction of the curtain sheet in the functional cavity of the curtain sheet, the prestressed sheets are arranged in an arc structure, and the convex surface of the prestressed sheet faces the inner side of the garage door. When the prestressed sheet is installed in the functional cavity, it is in a compressed state, so that the compressed prestressed sheet can exert a force on the curtain sheet to deform towards the inside of the door, offsetting the force of the curtain sheet deforming towards the outside of the door due to the air pressure difference, and improving the overall ability of the garage door to resist the internal and external pressure differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are not intended to be drawn to scale. In the drawings, each identical or approximately identical component shown in each figure may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the present utility model will be described by way of examples and with reference to the drawings, wherein:

[0022] Figure 1 is a schematic structural view of the garage door structure for enhancing the resistance to internal and external pressure differences shown in the present utility model;

[0023] Figure 2 It is a schematic diagram of the force direction of the prestressed sheet in the garage door structure for enhancing the resistance to internal and external pressure differences shown in the present utility model;

[0024] Figure 3 It is a schematic cross-sectional structure diagram of the curtain sheet in the garage door structure for enhancing the resistance to internal and external pressure differences shown in the present utility model;

[0025] Figure 4 It is a schematic diagram of the fixing structures at the middle section and both ends of the prestressed sheet in the garage door structure for enhancing the resistance to internal and external pressure differences shown in the present utility model.

[0026] In the figure, 1 is the winding box; 2 is the guide rail; 3 is the door curtain; 4 is the curtain sheet; 41 is the first connecting portion; 42 is the second connecting portion; 401 is the functional cavity; 5 is the prestressed sheet; 6 is the nut; 7 is the abutting member; 8 is the fixing member. Specific embodiments

[0027] In order to better understand the technical content of the present utility model, specific embodiments are hereby given and described in conjunction with the accompanying drawings as follows.

[0028] Combined with Figures 1 - 4 As shown, the present utility model provides a garage door structure for enhancing the resistance to internal and external pressure differences, including a winding box 1, guide rails 2 and a door curtain 3. A winding shaft and a driving component are provided inside the winding box 1. One end of the door curtain 3 is connected to the winding shaft, and the driving component drives the winding shaft to wind / unwind the door curtain 3. The two guide rails 2 are symmetrically arranged below both ends of the winding box 1. Both sides of the door curtain 3 extend into the guide rails 2, so that the door curtain 3 can slide along the guide rails 2, and the guide rails 2 limit the door curtain 3.

[0029] In an alternative embodiment, the driving component is one of an electric motor or a torsion spring. Preferably, an electric motor is used to drive the winding shaft to rotate, saving manpower, and it can be connected to an electric control system to realize remote control opening.

[0030] Among them, the door curtain 3 is composed of a plurality of curtain sheets 4 arranged along the door width direction and distributed along the door height direction and connected to each other.

[0031] In a specific embodiment, corresponding first connecting portion 41 and second connecting portion 42 are respectively provided at both ends in the width direction of the curtain sheet 4, and two adjacent curtain sheets 4 are hinged to each other through the first connecting portion 41 and the second connecting portion 42.

[0032] In an alternative embodiment, the first connecting portion 41 and the second connecting portion 42 are arranged as a cooperating hook-shaped structure, and can form a hinge when connected to each other.

[0033] At present, in order to facilitate the winding of the curtain, the curtain sheets are relatively thin and light, and the span of the curtain sheets is relatively large, resulting in weak rigidity of the curtain. Under the action of external forces, the curtain is prone to deformation. In windy weather, the air flow velocity outside the garage is relatively fast, while the air flow velocity inside the garage is relatively slow, resulting in the air pressure inside the garage being greater than the air pressure outside the garage. Under the action of the pressure difference, the curtain will bend and deform towards the outside of the garage, and even break away from the guide rail, with weak wind pressure resistance.

[0034] Combined with Figure 2 , Figure 3 and Figure 4 As shown, the curtain sheet 4 is set as a sandwich structure with a functional cavity 401 inside. Inside the functional cavity 401, a prestressed sheet 5 is arranged along the length direction of the curtain sheet 4. The prestressed sheet 5 is set as an arc structure, and the convex surface of the prestressed sheet 5 faces the inside of the garage door. When the prestressed sheet 5 is installed in the functional cavity 401, it is in a compressed state, so that the compressed prestressed sheet 5 can exert a force on the curtain sheet 4 that deforms towards the inside of the door, offsetting the force that causes the curtain sheet 4 to deform towards the outside of the door due to the air pressure difference, and improving the overall ability of the garage door to resist the internal and external pressure differences.

[0035] In an optional embodiment, the material of the prestressed sheet 5 is spring steel, which has good elasticity itself and is not prone to permanent deformation after being subjected to wind load, maintaining the elasticity of the prestressed sheet 5.

[0036] Furthermore, the thickness of the prestressed sheet 5 is 1.0 - 2.0 mm, and preferably the thickness of the prestressed sheet 5 is 2.0 mm, so that the prestressed sheet 5 has sufficient elastic force.

[0037] In an optional embodiment, the thickness of the functional cavity 401 is 10.0 - 12.0 mm, and preferably the thickness of the functional cavity 401 is 12.0 mm, which can select a prestressed sheet 5 with a larger bending radius, thereby improving the ability of the garage door to resist the internal and external pressure differences.

[0038] Combined with Figure 2 and Figure 3 As shown, fixing members 8 are provided at both ends of the curtain sheet 4 for fixing both ends of the prestressed sheet 5 on the side of the curtain sheet 4 close to the outside of the door, and fixing the position of the prestressed sheet 5 to prevent it from shifting.

[0039] In a specific embodiment, the fixing member 8 is a rivet. Corresponding holes are opened at both ends of the curtain sheet 4 and the prestressed sheet 5. The rivet passes through the holes of the curtain sheet 4 and the prestressed sheet 5 and is then riveted and fixed.

[0040] Furthermore, a top contact member 7 is provided at the middle position of the curtain sheet 4 in the length direction for restricting the middle position of the prestressed sheet 5 to fit on the inner side of the curtain sheet 4 close to the door. The top contact member 7 and the fixing member 8 can limit the two ends of the middle of the prestressed sheet 5. While not affecting its deformation to apply prestress, it can reduce the vibration generated when the door curtain 3 is retracted / extended, and reduce noise.

[0041] In a specific embodiment, the top contact member 7 is a screw, and a nut 6 is fixed to the inner side wall of the curtain sheet 4 close to the outside of the door. The top contact member 7 is threadedly connected to the nut 6 and extends to the inner wall of the curtain sheet 4 to abut the middle position of the prestressed sheet 5 against the inner side of the curtain sheet 4 close to the door.

[0042] Combined with Figure 3 As shown, a plurality of prestressed sheets 5 parallel to each other can be provided inside the functional cavity 401, and the plurality of prestressed sheets 5 are distributed in the height direction of the functional cavity 401, which can improve the wind pressure resistance of the door curtain 3.

[0043] Combined with the above embodiments, by arranging the prestressed sheet 5 along the length direction of the curtain sheet 4 in the functional cavity 401 of the curtain sheet 4, the prestressed sheet 5 is arranged in an arc structure, and the convex surface of the prestressed sheet 5 faces the inner side of the garage door. When the prestressed sheet 5 is installed in the functional cavity 401, it is in a compressed state, so that the compressed prestressed sheet 5 can apply a force to deform the curtain sheet 4 towards the inside of the door, offsetting the force that causes the curtain sheet 4 to deform towards the outside of the door due to the air pressure difference, and improving the overall ability of the garage door to resist the internal and external pressure difference.

[0044] Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Those with ordinary knowledge in the technical field to which the present utility model pertains can make various modifications and refinements without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to what is defined by the claims.

Claims

1. A garage door structure with enhanced resistance to internal and external pressure difference, characterized in that: include: A winding box (1), wherein a winding shaft and a driving component are provided inside the winding box (1); A door curtain (3) has one end connected to the reel, and the driving component retracts / releases the door curtain (3) by driving the reel; Two guide rails (2) are symmetrically arranged below the two ends of the winding box (1), and the two sides of the door curtain (3) extend into the guide rails (2), so that the door curtain (3) can slide along the guide rails (2); The door curtain (3) is composed of a plurality of curtain pieces (4) arranged along the door width direction and distributed along the door height direction, which are connected to each other, and the curtain pieces (4) are configured as a sandwich structure having a functional cavity (401) inside. A prestressed sheet (5) is arranged along the length direction of the curtain sheet (4) inside the functional cavity (401); the prestressed sheet (5) is configured as an arc-shaped structure, and the convex surface of the prestressed sheet (5) faces the inner side of the garage door, so that prestressing force to resist wind pressure can be applied to the curtain sheet (4).

2. The garage door structure with enhanced resistance to internal and external pressure difference according to claim 1, characterized in that: Fixing members (8) are provided at both ends of the curtain sheet (4) for fixing the two ends of the prestressed sheet (5) to the side of the curtain sheet (4) close to the outside of the door.

3. The garage door structure with enhanced resistance to internal and external pressure difference according to claim 2, characterized in that: The fixing member (8) is a rivet, and corresponding holes are provided at both ends of the curtain sheet (4) and the prestressed sheet (5).

4. The garage door structure with enhanced resistance to internal and external pressure difference according to claim 1, characterized in that: A top connection piece (7) is provided at the middle position of the curtain piece (4) along the length direction, which is used to limit the middle position of the prestressed sheet (5) to fit against the side of the curtain piece (4) close to the inside of the door.

5. The garage door structure with enhanced resistance to internal and external pressure difference according to claim 4, characterized in that: The top connection piece (7) is a screw, and a nut (6) is fixed to a side wall of the curtain sheet (4) close to the outside of the door. The top connection piece (7) is threadedly connected to the nut (6) and extends to the inner wall of the curtain sheet (4), so that the middle position of the prestressed sheet (5) abuts against the side of the curtain sheet (4) close to the inside of the door.

6. The garage door structure with enhanced resistance to internal and external pressure difference according to claim 1, characterized in that: The material of the prestressed sheet (5) is spring steel.

7. The garage door structure with enhanced resistance to internal and external pressure difference according to claim 1, characterized in that: A plurality of mutually parallel prestressed sheets (5) are arranged inside the functional cavity (401), and the plurality of prestressed sheets (5) are distributed along the height direction of the functional cavity (401).

8. The garage door structure with enhanced resistance to internal and external pressure difference according to claim 1, characterized in that: The thickness of the prestressed sheet (5) is 1.0-2.0 mm.

9. The garage door structure with enhanced resistance to internal and external pressure difference according to claim 1, characterized in that: The two ends of the curtain piece (4) in the width direction are respectively provided with a first connecting portion (41) and a second connecting portion (42) corresponding to each other, and two adjacent curtain pieces (4) are hinged to each other via the first connecting portion (41) and the second connecting portion (42).

10. The garage door structure with enhanced resistance to internal and external pressure difference according to claim 1, characterized in that: The thickness of the functional cavity (401) is 10.0-12.0 mm.

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