Sealing mechanism for door plate at top of quick door

Abstract

The utility model discloses a sealing mechanism for a top door plate of a quick door. The sealing mechanism comprises a connecting beam, a sealing cover plate is arranged on the side, facing the fast door, of the connecting beam. The lower end of the sealing cover plate is hinged to the connecting beam. A plurality of magnet assemblies are arranged on the upper portion of the hinged joint of the connecting beam and the sealing cover plate and fixedly connected with the connecting beam through supports. When the magnet assembly is powered off, attraction force enabling the sealing cover plate to rotate in the direction close to the magnet assembly is generated. When the sealing cover plate is attached to the magnet assembly, the quick door does not make contact with the sealing cover plate in the lifting process; the magnet assembly loses the attractive force to the sealing cover plate when being electrified; the sealing cover plate is attached to the magnet assembly, and when the magnet assembly is powered on, the sealing cover plate rotates in the direction of the quick door under the action of the gravity of the sealing cover plate. When the fast door descends and is closed, the electromagnet is powered on, and the sealing cover plate is promoted to rotate towards the fast door until the sealing cover plate is pressed on the sealing strip at the top of the fast door plate to achieve the sealing effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of rapid door sealing, and in particular relates to a rapid door top door plate sealing mechanism. Background Art

[0002] In some buildings such as factories or warehouses, it is required to minimize the entry of outdoor air to ensure a relatively clean indoor environment or a stable temperature. Therefore, requirements are put forward for the sealing of the fast doors used in these factories or warehouses when they are closed.

[0003] For the sealing of the fast door in the closed state, the left and right sides and the bottom are easy to seal and the effect is good. For the top of the fast door, the existing sealing method is to use a brush, fix one end of the brush to the bracket, and press the other end to the door panel. The sealing structure of this brush is relatively simple, and the brush hair is soft, which can adapt well to the shape of the door panel, but its dustproof effect is limited. It can only filter dust with relatively large particles, and cannot block some fine particles. In addition, it cannot prevent air circulation, and cannot meet the needs of some factories or warehouses that need to ensure indoor temperature. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a sealing mechanism for the top door panel of a fast door.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sealing mechanism for a top door panel of a fast door, comprising a connecting beam fixed to a door frame;

[0007] A sealing cover plate capable of pressing on the top sealing strip of the fast door is arranged on the side of the connecting beam facing the fast door, and the lower end of the sealing cover plate is hingedly connected to the connecting beam;

[0008] A plurality of magnet assemblies are arranged on the upper part of the hinged connection between the connecting beam and the sealing cover plate, and the magnet assemblies are fixedly connected to the connecting beam through a support;

[0009] When the magnet assembly is powered off, an attractive force is generated to cause the sealing cover plate to rotate toward the magnet assembly; when the sealing cover plate is in contact with the magnet assembly, no contact occurs between the sealing cover plate and the rapid door during the lifting process;

[0010] The magnet assembly loses its attraction to the sealing cover plate when powered on;

[0011] When the sealing cover plate is in contact with the magnet assembly and the magnet assembly is energized, the sealing cover plate rotates toward the direction of the fast door under the action of its own gravity.

[0012] Preferably, the magnet assembly comprises a magnet and an electromagnet sleeved outside the magnet;

[0013] When the electromagnet is powered off, the magnet generates an attractive force that causes the sealing cover plate to rotate toward the magnet assembly;

[0014] When the electromagnet is energized, the magnet assembly loses its attraction to the sealing cover plate.

[0015] Preferably, a return spring is sleeved on the outside of the magnet assembly, and the end of the return spring is fixedly connected to the corresponding support;

[0016] When the return spring is in a natural state, the end surface of the magnet assembly facing the fast door is located on the inner side of the corresponding return spring.

[0017] Preferably, a hinged base is fixedly provided at the lower part of the end surface of the rapid door on the connecting beam surface, and the lower end of the sealing cover plate is hingedly connected to the hinged base.

[0018] Preferably, the lower end of the hinged base is provided with a hinged portion in a planar spiral structure;

[0019] The lower end of the sealing cover plate is provided with a sealing cover plate hinge portion in a planar spiral structure;

[0020] The sealing cover plate hinged portion and the hinged portion are hingedly matched by adapting and plugging.

[0021] Preferably, the surface of the sealing cover plate is punched into a concave-convex structure.

[0022] Preferably, the surface of the sealing cover plate is provided with reinforcing ribs.

[0023] Preferably, the top end of the sealing cover plate is rolled into a tubular structure.

[0024] Preferably, a plurality of rollers are provided on the tubular structure at the top end of the sealing cover plate to rotate along the width direction of the sealing cover plate;

[0025] When the sealing cover plate is in contact with the magnet assembly, no contact occurs between the sealing cover plate and the roller during the lifting and lowering process of the fast door.

[0026] The beneficial effects of the utility model are:

[0027] (1) When the rapid door is completely lowered and closed, the electromagnet is energized, and the magnet assembly loses its attraction to the sealing cover plate. Under the thrust of the return spring and the gravity of the sealing cover plate, the sealing cover plate is forced to rotate toward the rapid door until it is pressed against the sealing strip on the top of the rapid door plate to seal. Compared with the existing brush, this sealing structure can block fine particles and prevent air circulation, so it can meet the needs of some factories or warehouses that need to maintain indoor temperature.

[0028] (2) After the hinged parts of the sealing cover plate of the utility model are adapted and plugged into each other, a rotation center is automatically formed, thereby forming a shaftless hinged structure without the need for additional hinged shafts and related accessories.

[0029] (3) When the magnet assembly in the present invention fails and cannot generate attraction for the sealing cover plate, the sealing cover plate cannot be attached to the magnet assembly during the rising or falling process of the rapid door and is always pressed against the door plate of the rapid door. The setting of the roller in the present application can prevent the sealing cover plate from directly contacting the door plate of the rapid door. When the roller contacts the door plate of the rapid door, it will roll, thereby avoiding the situation where the sealing cover plate rubs against the door plate of the rapid door. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0031] Figure 1 This is a schematic front view of the structure of the sealing mechanism of the top door panel of the utility model fast door;

[0032] Figure 2 It is a right view schematically showing the structure of the sealing mechanism of the top door panel of the utility model of the rapid door when the rapid door is closed;

[0033] Figure 3 It is a structural schematic diagram of the sealing mechanism of the top door panel of the rapid door of the utility model during the rapid door lifting process;

[0034] Figure 4 It is a schematic diagram of the cooperation between the electromagnet and the return spring in the utility model;

[0035] Figure 5 It is a schematic diagram of the cooperation between the hinged base and the sealing cover plate in the utility model;

[0036] Figure 6 yes Figure 5 A partial enlarged view of A;

[0037] Figure 7 It is a structural schematic diagram of the sealing mechanism of the top door panel of the utility model of the rapid door during the rapid door lifting process when the magnet assembly fails;

[0038] in:

[0039] 0-fast door;

[0040] 1-connecting beam, 2-sealing cover plate, 21-sealing cover plate hinge part, 22-reinforcing rib, 23-roller, 3-magnet assembly, 4-support, 5-reset spring, 6-hinged base, 61-hinged part. DETAILED DESCRIPTION

[0041] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] In the present invention, the directions or positional relationships indicated by terms such as "upper", "lower", "bottom", "top", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention. They do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

[0044] In the present utility model, terms such as "connected" and "connection" should be understood in a broad sense, indicating that the connection can be fixed, integral or detachable; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meaning of the above terms in the present utility model can be determined according to specific circumstances, and it cannot be understood as a limitation of the present utility model.

[0045] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0046] like Figure 1-3 As shown, a sealing mechanism for the top door panel of a fast door comprises a connecting beam 1 fixed on a door frame;

[0047] A sealing cover plate 2 that can be pressed on the top sealing strip of the fast door is provided on the side of the connecting beam 1 facing the fast door 0, and the lower end of the sealing cover plate 2 is hingedly connected to the connecting beam 1;

[0048] A plurality of magnet assemblies 3 are provided at the upper part of the hinged connection between the connecting beam 1 and the sealing cover plate 2, and the magnet assemblies 3 are fixedly connected to the connecting beam 1 through a support 4;

[0049] When the magnet assembly 3 is powered off, an attraction is generated to rotate the sealing cover plate 2 toward the magnet assembly 3; when the sealing cover plate 2 is in contact with the magnet assembly 3, no contact occurs between the fast door 0 and the sealing cover plate 2 during the lifting process;

[0050] The magnet assembly 3 loses its attraction to the sealing cover plate 2 when powered on;

[0051] When the sealing cover plate 2 is attached to the magnet assembly 3 and the magnet assembly 3 is powered on, the sealing cover plate 2 rotates in the direction of the rapid door under the action of its own gravity. In the present application, when the magnet assembly 3 is attached to the sealing cover plate 2, the distance between the center of gravity of the sealing cover plate 2 and the rapid door 0 is smaller than the distance between the central axis of the hinge between the sealing cover plate 2 and the connecting beam 1 and the rapid door 0, so that the sealing cover plate 2 itself has a downward rotation torque, ensuring that it can fall down and press on the sealing strip on the top of the door panel of the rapid door 0 when the magnet assembly 3 is powered on.

[0052] Preferably, the magnet assembly 3 includes a magnet and an electromagnet sleeved outside the magnet;

[0053] When the electromagnet is powered off, the magnet generates an attractive force that causes the sealing cover plate 2 to rotate toward the magnet assembly 3;

[0054] When the electromagnet is energized, the magnet assembly 3 loses its attraction to the sealing cover plate 2 .

[0055] In the present application, the magnetism generated by the electromagnet when it is energized cancels out the magnetism of the magnet itself.

[0056] Preferably, a return spring 5 is sleeved on the outside of the magnet assembly 3, and the end of the return spring 5 is fixedly connected to the corresponding support 4;

[0057] like Figure 4 As shown, when the return spring 5 is in a natural state, the end surface of the magnet assembly 3 facing the rapid door 0 is located on the inner side of the corresponding return spring 5. When the sealing cover plate 2 rotates in the direction of the magnet assembly 3, the return spring 5 is first compressed. When the electromagnet is energized, the magnet assembly 3 loses its attraction to the sealing cover plate 2. The return spring 5 compressed by the sealing cover plate 2 provides additional power for the sealing cover plate 2 to rotate in the direction of the rapid door 0.

[0058] When the electromagnet is powered off, under the attraction of the magnet, the sealing cover plate 2 rotates in the direction of the magnet assembly 3, first compressing the return spring 5 until the sealing cover plate 2 is pressed onto the magnet assembly 3. At this time, the attraction of the magnet to the sealing cover plate 2 is greater than the thrust of the return spring 5 on the sealing cover plate 2. When the electromagnet is powered on, the magnet assembly 3 loses its attraction to the sealing cover plate 2. The thrust of the return spring 5 on the sealing cover plate 2 combined with the gravity of the sealing cover plate 2 causes the sealing cover plate 2 to rotate in the direction of the rapid door 0 until it is pressed on the sealing strip at the top of the rapid door to form a top seal.

[0059] Preferably, a hinged base 6 is fixedly provided at the lower part of the end surface of the rapid door 0 on the surface of the connecting beam 1 , and the lower end of the sealing cover plate 2 is hingedly connected to the hinged base 6 .

[0060] Preferably, Figure 5-6 As shown, the lower end of the hinged base 6 is provided with a hinged portion 61 in a planar spiral structure;

[0061] The lower end of the sealing cover plate 2 is provided with a sealing cover plate hinge portion 21 in a planar spiral structure;

[0062] The sealing cover plate hinge part 21 is hingedly matched with the hinge part 61 by means of adaption and plugging.

[0063] After the hinged portion 21 of the sealing cover plate of the present application is adapted and plugged into the hinged portion 61, a rotation center is automatically formed, thereby forming a shaftless hinged structure without the need for an additional hinged shaft and related accessories.

[0064] Preferably, the surface of the sealing cover plate 2 is punched into a concave-convex structure to improve rigidity and reduce deformation caused by too long parts that greatly affect the sealing effect.

[0065] Preferably, the surface of the sealing cover plate 2 is provided with reinforcing ribs 22 to improve rigidity and reduce deformation caused by too long parts that affects the sealing effect.

[0066] Preferably, the top end of the sealing cover plate 2 is rolled into a tubular structure to increase the weight and thereby increase the downward rotational torque thereof.

[0067] Preferably, a plurality of rollers 23 are rotatably matched on the tubular structure at the top end of the sealing cover plate 2 along the width direction of the sealing cover plate 2; specifically, two, three or four rollers 23 may be provided, and the rollers 23 may be rubber wheels or brush wheels;

[0068] When the sealing cover plate 2 is in contact with the magnet assembly 3, the fast door 0 does not come into contact with the sealing cover plate 2 or the roller 23 during the lifting process.

[0069] When the magnet assembly 3 of the present application works normally, during the rising or falling process of the fast door 0, the attraction generated by the magnet assembly 3 causes the sealing door panel 2 to be closely attached to the magnet assembly 3, and at this time, the roller 23 does not contact the door panel of the fast door 0;

[0070] When the magnet assembly 3 of the present application fails and cannot generate attraction for the sealing cover plate 2, during the rising or falling process of the rapid door, the sealing cover plate 2 cannot be attached to the magnet assembly 3 and is always pressed on the door plate of the rapid door 0. The setting of the roller 23 in the present application can prevent the sealing cover plate 2 from directly contacting the door plate of the rapid door 0. When the roller 23 contacts the door plate of the rapid door 0, it will roll, thereby avoiding the situation where the sealing cover plate 2 rubs against the door plate of the rapid door 0.

[0071] A sealing mechanism for the top door panel of a fast door, the specific implementation of which is as follows:

[0072] When the fast door 0 needs to rise to open the door, the fast door 0 first rises to lift the sealing cover plate 2, and then under the attraction of the magnet, the sealing cover plate 2 rotates in the direction of the magnet assembly 3 and then separates from the door plate of the fast door 0, and then compresses the return spring 5 until it is close to the magnet assembly 3. In the subsequent rising process, the door plate of the fast door 0 does not contact the sealing cover plate 2, thereby avoiding friction and noise. When the fast door 0 is finished rising and in the process of descending, the sealing cover plate 2 is always close to the magnet assembly 3.

[0073] When the rapid door 0 is completely lowered and closed, the electromagnet is energized, and the magnet assembly 3 loses its attraction to the sealing cover plate 2. Under the thrust of the reset spring 5 and the gravity of the sealing cover plate 2 itself, the sealing cover plate 2 is prompted to rotate in the direction of the rapid door 0 until it is pressed on the sealing strip at the top of the rapid door panel to play a sealing role. Compared with the existing brush, this sealing structure can block fine particles and prevent air circulation, so it can meet the needs of some factories or warehouses that need to ensure indoor temperature. After the sealing cover plate 2 is pressed on the sealing strip at the top of the rapid door panel, the electromagnet 3 is powered off. At this time, the attraction of the magnet cannot make the sealing cover plate 2 overcome its own gravity and rotate upward. The structural setting of the magnet assembly 3 in this application is that the electromagnet is powered on only when the rapid door is completely lowered and closed, and the electromagnet is powered off after the sealing cover plate 2 is pressed on the sealing strip, so that the electromagnet is powered on for a short time each time, about 10 seconds.

[0074] When the magnet assembly 3 of the present application fails and cannot generate attraction for the sealing cover plate 2, during the rising or falling process of the rapid door, the sealing cover plate 2 cannot be attached to the magnet assembly 3 and is always pressed on the door plate of the rapid door 0. The setting of the roller 23 in the present application can prevent the sealing cover plate 2 from directly contacting the door plate of the rapid door 0. When the roller 23 contacts the door plate of the rapid door 0, it will roll, thereby avoiding the situation where the sealing cover plate 2 rubs against the door plate of the rapid door 0.

[0075] Although the above describes the specific implementation mode of the utility model in combination with the accompanying drawings, it is not a limitation of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the protection scope of the utility model.

Claims

1. A sealing mechanism for the top door panel of a fast door, characterized in that: including a connecting beam fixed to the door frame; A sealing cover plate capable of pressing on the top sealing strip of the fast door is arranged on the side of the connecting beam facing the fast door, and the lower end of the sealing cover plate is hingedly connected to the connecting beam; A plurality of magnet assemblies are arranged on the upper part of the hinged connection between the connecting beam and the sealing cover plate, and the magnet assemblies are fixedly connected to the connecting beam through a support; When the magnet assembly is powered off, an attractive force is generated to cause the sealing cover plate to rotate toward the magnet assembly; when the sealing cover plate is in contact with the magnet assembly, no contact occurs between the sealing cover plate and the rapid door during the lifting process; The magnet assembly loses its attraction to the sealing cover plate when powered on; When the sealing cover plate is in contact with the magnet assembly and the magnet assembly is energized, the sealing cover plate rotates toward the direction of the fast door under the action of its own gravity.

2. The sealing mechanism for the top door panel of a fast door according to claim 1, characterized in that: The magnet assembly comprises a magnet and an electromagnet sleeved outside the magnet; When the electromagnet is powered off, the magnet generates an attractive force that causes the sealing cover plate to rotate toward the magnet assembly; When the electromagnet is energized, the magnet assembly loses its attraction to the sealing cover plate.

3. The sealing mechanism for the top door panel of a fast door according to claim 2, characterized in that: The magnet assembly is covered with a return spring, and the end of the return spring is fixedly connected to the corresponding support; When the return spring is in a natural state, the end surface of the magnet assembly facing the fast door is located on the inner side of the corresponding return spring.

4. The sealing mechanism for the top door panel of a fast door according to claim 1, characterized in that: A hinged base is fixedly arranged at the lower part of the end surface of the fast door on the connecting beam surface, and the lower end of the sealing cover plate is hingedly connected to the hinged base.

5. The sealing mechanism for the top door panel of a fast door according to claim 4, characterized in that: The lower end of the hinged base is provided with a hinged portion in a planar spiral structure; The lower end of the sealing cover plate is provided with a sealing cover plate hinge portion in a planar spiral structure; The sealing cover plate hinged portion and the hinged portion are hingedly matched by adapting and plugging.

6. The sealing mechanism for the top door panel of a fast door according to claim 1, characterized in that: The surface of the sealing cover plate is punched into a concave-convex structure.

7. The sealing mechanism for the top door panel of a fast door according to claim 1, characterized in that: The surface of the sealing cover plate is provided with reinforcing ribs.

8. The sealing mechanism for the top door panel of a fast door according to claim 1, characterized in that: The top end of the sealing cover plate is rolled into a tubular structure.

9. The sealing mechanism for the top door panel of a fast door according to claim 8, characterized in that: A plurality of rollers are provided on the tubular structure at the top of the sealing cover plate to rotate along the width direction of the sealing cover plate; When the sealing cover plate is in contact with the magnet assembly, no contact occurs between the sealing cover plate and the roller during the lifting and lowering process of the fast door.

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