CN216232046U

CN216232046U - High-extension double-bridge breaking type rolled steel strip and sealing strip

Info

Publication number: CN216232046U
Application number: CN202122001924.1U
Authority: CN
Inventors: 孙长胜; 刘万立; 胡江辉
Original assignee: Langfang Lwb Machinery Co ltd
Current assignee: Langfang Lwb Machinery Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-04-08
Anticipated expiration: 2031-08-24

Abstract

A high-extension double-bridge interrupted type rolled steel strip and a sealing strip are provided, wherein the steel strip is provided with longitudinal double bridges distributed on two sides of the steel strip, a plurality of fins which are transversely and uniformly distributed are respectively arranged on the outer sides of the two sides of the double bridges, a plurality of central notches which are transversely and uniformly distributed are arranged in the middle of the double bridges, and the space D between the fins is larger than or equal to 1mm and smaller than or equal to 1.5 mm; an interruption notch is arranged between every two adjacent fins up and down, and two ends of each central notch are provided with an interruption notch. The steel belt increases the space between the teeth, is beneficial to adsorbing and wrapping more plastic materials on the metal framework, greatly enhances the adsorption force of the sealing strip, and simultaneously can greatly reduce the weight of the framework and save the cost. In addition, after the breaking notches of the fins and the central notch are additionally arranged, the product can be easily broken in the sealing strip, and the flexibility and the product clamping force of the sealing strip are greatly improved.

Description

High-extension double-bridge breaking type rolled steel strip and sealing strip

Technical Field

The utility model relates to a metal framework, in particular to a high-extension double-bridge breaking type rolled steel strip used in a sealing strip and the sealing strip.

Background

Sealing strips are arranged in an engine compartment, a luggage compartment and a door opening of equipment such as vehicles, ships, airplanes and the like. Taking the automobile sealing strip as an example, the automobile sealing strip is mainly composed of a metal framework and a sealing material plastic material wrapped outside the metal framework. The plastic material must have a certain adsorption force on the surface of the metal framework material, so the metal framework is generally provided with fins, thereby allowing the plastic material to pass through the notches between the fins and be more tightly wrapped on the metal framework. The metal framework is bent into a U-shaped clamping structure before or after being wrapped by the sealing material, and is clamped on the sealing flange of the opening to play a supporting role so as to reduce the deformation of the sealing strip.

Fig. 1 shows a plan view of a prior art metal skeleton having a continuous metal skeleton bridge 2 with fins 1 on both sides and notches 3 between the fins on each side, which has the following disadvantages:

1. the framework is only provided with a single bridge without a notch, which is not beneficial to adsorbing and wrapping the plastic material on the metal framework, so that the adsorption force and the clamping force of the sealing strip of a final product are insufficient;

2. because the metal framework is continuous, the bending degree is not flexible, most products can be bent to 60 degrees, and particularly for car door and luggage compartment doors with large curve variation, the process is complicated, and the sealing performance is reduced;

3. because the metal framework is continuous, when the framework needs to be cut off on site during later-stage sealing strip installation, the size is difficult to master, and if the framework is cut off to be slightly shorter than the size of the plastic material, the sealing strip cannot be installed, so that the ductility of the sealing strip is influenced.

With the advance of the technology, the conventional technology is improved, for example, the double bridges are added to some products, although the breaking force is improved, the tooth space is very small and is only 0.8mm at most, and the required extension amount can not be achieved in some occasions.

Therefore, the sealing strip and the framework thereof of the existing product need to be innovated continuously.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the existing products and provide a high-extension double-bridge break type rolled steel strip and a sealing strip, which have high flexibility, adsorption force, clamping force and ductility.

In order to achieve the purpose, the utility model provides a high-extension double-bridge interrupted rolled steel strip which is used as an inner framework of a sealing strip, wherein the steel strip is provided with longitudinal double bridges distributed on two sides of the steel strip, a plurality of fins which are transversely and uniformly distributed are respectively arranged on the outer sides of the two sides of the double bridges, a plurality of central notches which are transversely and uniformly distributed are arranged in the middle part between the double bridges, and the tooth space D between every two adjacent fins is more than or equal to 1mm and less than or equal to 1.5 mm; and a breaking notch is arranged at the joint between every two vertically adjacent fins and the bridge, and two breaking notches are respectively arranged at the joints between the two ends of each central notch and the bridge.

Wherein the outermost edge of the breaking slit is in the shape of a sharp opening, the breaking slit being integrally formed with the fin and the central notch connected thereto.

Wherein the break-out cuts and the fins and central notches associated therewith are integrally formed using a rolling process.

The utility model also provides a sealing strip containing the high-extension double-bridge-break rolled steel strip, and the high-extension double-bridge-break rolled steel strip is wrapped with the sealing material plastic material.

The high-extension double-bridge breaking type rolled steel strip and the sealing strip have the advantages that the tooth space is enlarged, so that more plastic materials can be adsorbed and wrapped on the metal framework, the adsorption force of the sealing strip is greatly enhanced, the weight of the framework can be greatly reduced, and the cost is saved. In addition, after the breaking notches of the fins and the central notch are additionally arranged, the product can be easily broken in the sealing strip, the sealing strip can be divided into the fins with any number of sections as required to be broken, and the fins can also be extruded out of the sealing strip as required to be broken, so that the size can be easily mastered, the framework cannot be cut to a slightly shorter size than a plastic material, the ductility of the sealing strip cannot be influenced, and the flexibility and the product clamping force of the sealing strip are greatly improved.

Drawings

Fig. 1 is a schematic plan view of a metal skeleton of the prior art.

Figure 2 is a schematic view of a high elongation double bridge break rolled steel strip of the present invention.

Detailed Description

The following are preferred embodiments of the present invention, and do not limit the scope of the present invention.

Referring to fig. 2, there is shown a schematic diagram of a high elongation double bridge break rolled steel strip according to the present invention.

In the embodiment of fig. 2, the high-elongation double-bridge interrupted rolled steel strip is a metal framework with a bilaterally symmetrical structure, and has longitudinal double bridges 11 distributed on both sides thereof, a plurality of fins 101 distributed transversely and uniformly are respectively arranged on the outer sides of both sides of the double bridges 11, a plurality of central notches 102 distributed transversely and uniformly are respectively arranged in the middle of the steel strip, a breaking notch 1011 is arranged at the joint between every two adjacent fins 101 above and below and the bridge 11, a breaking notch 1021 is respectively arranged at the joint between both ends of each central notch 102 and the bridge, in one embodiment, the outermost edges of the breaking notch 1011 and the breaking notch 1021 are respectively in a sharp-mouth shape, and the fins 101, the breaking notch 1011, the breaking notch 1021 and the central notch 102 connected thereto can be integrally formed, for example, the rolled steel strip can be produced by adopting a rolling process. The tooth space D between every two adjacent fins 101 is larger than or equal to 1mm, the maximum tooth space is 1.5mm, and compared with the maximum tooth space of a steel belt of the existing product, the tooth space D can greatly reduce the weight of the framework and save the cost.

The utility model also provides a sealing strip containing the high-extension double-bridge-break rolled steel strip, and sealing material plastic materials are wrapped outside the high-extension double-bridge-break rolled steel strip.

The double bridges 11 of the utility model play a role of two connecting ribs, so that the strength of the steel belt is enhanced, the framework of the structure has high breaking force, and the belt is prevented from being broken in the production process; the increase of the space between the teeth is beneficial to adsorbing and wrapping more plastic materials on the metal framework, and the adsorption force of the sealing strip is greatly enhanced. Particularly, after the breaking notches 1011 of the fins and the breaking notches 1021 of the central notch are added, the bending degree of the steel belt is more flexible during installation and use, and the steel belt can be bent to a 45-degree angle to the maximum extent. Simultaneously, adopt two kinds to break the incision, can also make this product break the processing easily in the sealing strip inside, both can divide into the fin of arbitrary knot number with the sealing strip as required and break, also can break again after the sealing strip is extruded as required, consequently grasp the size very easily, can not cause the skeleton to be cut the condition that is slightly shorter than the plastic material size, just also can not influence the ductility of sealing strip, improved the pliability and the product clamping-force of sealing strip greatly.

It should be noted that the specific embodiments and applications of the present invention are provided for illustrative purposes only and are not intended to limit the scope of the present invention, and those skilled in the art can modify the specific embodiments and apply them in different practical applications.

Claims

1. The utility model provides a high two bridge broken roll extrusion steel band that extend is used as the sealing strip inner frame, the steel band has the vertical two bridges that distribute in its both sides the both sides outside of two bridges is equipped with a plurality of horizontal and evenly distributed's fin respectively mid portion between the two bridges is equipped with a plurality of horizontal and evenly distributed's central notch, characterized by: the tooth space D between every two adjacent fins is larger than or equal to 1mm and smaller than or equal to 1.5 mm; and a breaking notch is arranged at the joint between every two vertically adjacent fins and the bridge, and two breaking notches are respectively arranged at the joints between the two ends of each central notch and the bridge.

2. The high elongation double bridge break rolled steel strip of claim 1 wherein: the outermost edge of the breaking cut is in the shape of a sharp opening, and the breaking cut is integrally formed with the fin and the central notch connected with the breaking cut.

3. The high elongation double bridge break rolled steel strip as claimed in claim 2 wherein: the breaking cuts, the fins connected with the breaking cuts and the central notches are integrally formed by adopting a rolling process.

4. The utility model provides a contain high sealing strip that extends broken formula roll extrusion steel band of double bridge, characterized by: a high stretch double bridge break rolled steel strip according to any one of claims 1-2 surrounded by a plastics sealant material.