High-extension roller shear stretching staggered hole metal framework and sealing strip

Abstract

The utility model provides a high-extension rolling shear stretching staggered-hole metal framework and a sealing strip. The metal framework comprises a base body, the center axis of the base body extends in the first direction, a plurality of tooth wings are arranged on the two sides of the base body respectively, the tooth wings extend in the second direction, the second direction is perpendicular to the first direction, the tooth wings on the two sides of the base body are arranged in pairs, and the tooth wings extend in the second direction. An interval notch is formed between every two adjacent tooth wings; a plurality of center notches are formed in the center axis position of the base body in the first direction, each center notch is formed between a pair of tooth wings, the center notches extend to one side of the base body to the tooth wings on the corresponding side, and the extending directions of every two adjacent center notches are opposite and parallel to the second direction; the tooth wing to which the central notch extends is a first tooth wing, the tooth wing to which the central notch does not extend is a second tooth wing, and the first tooth wing and the second tooth wing are alternately arranged. The metal framework provided by the utility model has the advantages of high tensile strength and high degree of freedom.

Description

Technical Field

[0001] The present disclosure generally relates to the technical field of metal frames, and in particular to a high-elongation rolling-shear-stretching staggered hole metal frame and a sealing strip. Background Art

[0002] Sealing strips are installed in engine compartments, luggage compartments, and door openings in vehicles, ships, and aircraft. For example, automotive sealing strips primarily consist of a metal frame surrounded by a plastic sealant. Before or after being wrapped with the sealant, the metal frame is bent into a U-shaped clamping structure that clamps onto the sealing flange of the opening, providing support and minimizing deformation of the seal. For example, the inner and outer water-cut seals and glass run channel seals of automotive doors are traditionally made using a steel strip as the metal frame. The plastic sealant is then bonded to the steel strip via a coating to form the seal.

[0003] The utility model patent with authorization announcement number CN 214661996 U discloses a high-elongation, ultra-light rolled-shear stretched steel belt and sealing strip. By opening an incision at the central axis position, the production cost is reduced while ensuring the breaking force of the skeleton. However, the degree of freedom of the tooth wings in the existing technology is low, making it inconvenient to bend into complex shapes to meet the production requirements of complex structure sealing strips. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a high-elongation rolling-shear-stretching staggered hole metal frame and sealing strip to solve the above-mentioned problems.

[0005] In a first aspect, the present application provides a high-extension rolling-shear-stretching staggered hole metal frame, comprising:

[0006] A base, wherein the central axis of the base extends along a first direction, and a plurality of tooth wings are arranged on both sides of the base, and the tooth wings extend along a second direction, and the second direction is perpendicular to the first direction. The tooth wings on both sides of the base are arranged in pairs, and spaced cuts are provided between adjacent tooth wings; a plurality of center cuts are arranged along the first direction at the central axis position of the base, and each center cut is provided between a pair of tooth wings, and the center cut extends toward one side of the base to the tooth wing on the corresponding side, and the extension directions of two adjacent center cuts are opposite and parallel to the second direction; the tooth wing to which the center cut extends is the first tooth wing, and the tooth wing to which the center cut does not extend is the second tooth wing, and the first tooth wing and the second tooth wing are alternately arranged.

[0007] According to the technical solution provided in the embodiment of the present application, the central incision is a diamond-shaped structure with one side elongated.

[0008] According to the technical solution provided in the embodiment of the present application, the width of the second tooth wing close to the end of the central axis is greater than the width of the first tooth wing close to the end of the central axis.

[0009] According to the technical solution provided in the embodiment of the present application, the end of the second tooth wing close to the central axis and the end of the first tooth wing close to the central axis are both gradually changed in width, and the width of the side close to the central axis is greater than the width of the side away from the central axis, and the degree of width gradual change of the end of the second tooth wing is greater than the degree of width gradual change of the end of the first tooth wing.

[0010] According to the technical solution provided in the embodiment of the present application, a bridge portion is formed between the second tooth wing and the non-extended side of the central incision, and the multiple bridge portions and the base located at the central axis position cooperate to form a bridge structure.

[0011] According to the technical solution provided in the embodiment of the present application, the side edge of the end of the second tooth wing close to the central axis is parallel to the side edge adjacent to the corresponding central incision.

[0012] According to the technical solution provided in the embodiment of the present application, the widths of all the bridging portions on the base are equal.

[0013] According to the technical solution provided in the embodiment of the present application, the adjacent central incisions are staggered in the second direction.

[0014] A second aspect of the present application provides a sealing strip comprising the high-elongation rolled-shear-stretched staggered hole metal frame as described above, and a sealing material wrapped around the outside of the metal frame.

[0015] According to the technical solution provided in the embodiment of the present application, the sealing material is made of plastic.

[0016] Compared with the prior art, the beneficial effects of the present application are as follows: by arranging multiple tooth wings on both sides of the base and providing spaced cuts between adjacent tooth wings, on the one hand, it is convenient to bend the metal frame into different shapes to adapt to the production of sealing strips of different shapes; on the other hand, when producing the sealing strip, the plastic material injected on the outside of the metal frame can be more closely attached to the metal frame through the spaced cuts, and the gluing operation between the metal frame and the plastic material can be omitted; by providing a central cut, the plastic material can be filled in the central cut position when injecting the plastic material, and a more secure connection with the metal frame is achieved after the plastic material is molded; by extending one side of the central cut to the first tooth wing, the hollow area of ​​the first tooth wing is larger than that of the second tooth wing, so that the first tooth wing has better flexibility relative to the second tooth wing when bending, thereby making the metal frame adaptable to more shapes, and the second tooth wing has just the right structural strength relative to the first tooth wing to ensure the tensile performance of the metal frame; by arranging the first tooth wing and the second tooth wing alternately, the metal frame has the advantages of both tensile performance and high degree of freedom. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 This is a schematic structural diagram of the high-elongation rolling-shear-stretching staggered hole metal skeleton provided in this application.

[0019] Figure numbers: 1, base; 2, center axis; 3, tooth wing; 4, spacing cut; 5, center cut; 6, first tooth wing; 7, second tooth wing; 8, bridge portion. DETAILED DESCRIPTION

[0020] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0021] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] Example 1

[0023] Please refer to Figure 1 This embodiment provides a high-elongation rolling-shear-stretching staggered hole metal skeleton, comprising:

[0024] A base body 1, wherein the central axis 2 of the base body 1 extends along a first direction, and a plurality of tooth wings 3 are arranged on both sides of the base body 1, and the tooth wings 3 extend along a second direction, and the second direction is perpendicular to the first direction. The tooth wings 3 on both sides of the base body 1 are arranged in pairs, and spaced cuts 4 are provided between adjacent tooth wings 3; a plurality of central cuts 5 are arranged along the first direction at the central axis 2 of the base body 1, and each central cut 5 is provided between a pair of tooth wings 3, and the central cut 5 extends toward one side of the base body 1 to the tooth wing 3 on the corresponding side, and the extension directions of two adjacent central cuts 5 are opposite and parallel to the second direction; the tooth wing 3 to which the central cut 5 extends is the first tooth wing 6, and the tooth wing 3 to which the central cut 5 does not extend is the second tooth wing 7, and the first tooth wing 6 and the second tooth wing 7 are alternately arranged.

[0025] Specifically, the substrate 1 is a metal sheet, and the first direction is Figure 1 The vertical direction in the second direction is Figure 1 The horizontal direction of the metal frame; the two sides of the base 1 are cut to form a plurality of tooth wings 3, each of which is rectangular, with the second direction as the length direction and the first direction as the width direction. Two adjacent tooth wings 3 on the same side of the base 1 are separated by a spacing cut 4, which extends to a position of the base 1 near the central axis 2. The provision of the spacing cut 4 makes each tooth wing 3 relatively independent, and each tooth wing 3 can be bent individually to change the shape of the metal frame, facilitating the production of sealing strips of different shapes. At the same time, because the spacing cuts 4 separate the tooth wings 3, when plastic material is wrapped around the metal frame, the plastic material can pass through the spacing cuts 4 from one side of the base 1 to the other. On the one hand, the plastic material can be clamped at the location of the spacing cut 4, eliminating the process of gluing the metal frame and the plastic material. On the other hand, the plastic material can be wrapped around each tooth wing 3 to improve the firmness of the connection with the metal frame.

[0026] Specifically, such as Figure 1 As shown, the tooth wings 3 on the left and right sides of the base 1 are arranged in pairs, and each of the central incisions 5 is arranged between a pair of the tooth wings 3. The central incision 5 passes through the two sides of the base 1. By setting the central incision 5, when the plastic material is injected during the production of the sealing strip, the plastic material can pass through the central incision 5 and fill the central incision 5, and then after the plastic material is molded, it is clamped with the central incision 5 to improve the firmness of the connection with the central axis position of the metal skeleton; at the same time, by setting the central incision 5, the amount of metal used in the metal skeleton can be reduced, saving production costs.

[0027] The central cutout 5 extends outward from one side of the tooth wings 3 near one of the tooth wings 3 to the corresponding tooth wing 3. The central cutout 5 then penetrates the tooth wing 3 on one side, forming a first tooth wing 6. The tooth wing 3 not penetrated by the central cutout 5 serves as a second tooth wing 7. Each pair of tooth wings 3 on the base 1 includes one first tooth wing 6 and one second tooth wing 7. Because the first tooth wing 6 is penetrated by the central cutout 5, the plastic can pass through it during injection, thereby enhancing the connection between the plastic and the tooth wings 3 of the metal frame. Furthermore, because the first tooth wing 6 is hollow near the central axis 2, it has a greater degree of freedom than the second tooth wing 7, allowing it to be bent into more complex shapes. While the second tooth wing 7 has a relatively limited degree of freedom, because it is not penetrated by the central cutout 5, it has greater tensile strength in the second direction.

[0028] Specifically, any two adjacent central cutouts 5 extend in opposite directions, such as Figure 1 As shown, the first center cutout 5 at the top of the base 1 extends leftward, so the tooth wing 3 on the left side of the base 1 is the first tooth wing 6, and the tooth wing 3 on the right side of the base 1 is the second tooth wing 7. The second center cutout 5 at the top of the base 1 extends rightward, so the tooth wing 3 on the right side of the base 1 is the first tooth wing 6, and the tooth wing 3 on the left side of the base 1 is the second tooth wing 7. Regardless of whether the center cutout 5 extends leftward or rightward, the extension direction is parallel to the second direction. The center cutouts 5 with different extension directions are arranged alternately on the base 1, thereby alternating the first tooth wing 6 and the second tooth wing 7 on both sides of the base 1. The alternating arrangement of the first tooth wing 6 and the second tooth wing 7 allows the metal skeleton to have both tensile strength and a high degree of freedom.

[0029] Furthermore, the central incision 5 is a diamond-shaped structure with one side elongated.

[0030] Specifically, the shape of the central incision 5 is obtained by keeping three vertices of a rhombus fixed and stretching one vertex outward. In this embodiment, the central incision 5 is a rhombus structure. In actual production, the shape of the central incision 5 can be adaptively adjusted.

[0031] Furthermore, the width of the second tooth wing 7 close to the end of the central axis 2 is greater than the width of the first tooth wing 6 close to the end of the central axis 2 .

[0032] Specifically, on the first aspect, since the first tooth wing 6 is mainly responsible for facilitating the bending of the metal frame into a more complex shape, the width of its end portion is set relatively narrow, while the second tooth wing 7 is mainly responsible for ensuring the tensile strength of the metal frame, so the width of its end portion is set relatively wide; on the second aspect, the ends of the first tooth wing 6 and the second tooth wing 7 are set to different widths in order to adapt to the central incision 5 of the diamond structure.

[0033] Furthermore, the end of the second tooth wing 7 close to the central axis 2 and the end of the first tooth wing 6 close to the central axis 2 both have gradually changing widths, and the width of the side close to the central axis 2 is greater than the width of the side away from the central axis 2, and the degree of width gradual change at the end of the second tooth wing 7 is greater than the degree of width gradual change at the end of the first tooth wing 6.

[0034] Specifically, the distance between one end of the extended central cutout 5 and the outer edge of the corresponding first tooth wing 6 is greater than half the width of the first tooth wing 6. This means that the extended length of the central cutout 5 is adaptable, and the longer the central cutout 5 is, the greater the degree of freedom of the first tooth wing 6. The ends of the first and second tooth wings 6, 7, are configured with gradually varying widths to accommodate the diamond-shaped structure of the central cutout 5. Because one side of the central cutout 5 extends longer, the degree of width gradient at the ends of the first tooth wing 6 is relatively shallow. Furthermore, as the length of the central cutout 5 increases, the degree of width gradient at the ends of the first tooth wing 6 decreases.

[0035] Furthermore, a bridge portion 8 is formed between the second tooth wing 7 and the non-extended side of the central cutout 5 , and a plurality of the bridge portions 8 cooperate with the base body 1 located at the position of the central axis 2 to form a bridge structure.

[0036] Specifically, since the second tooth wings 7 are alternately arranged on the left and right sides of the base 1, and the central cuts 5 with different extension directions are also alternately arranged, the bridging portions 8 are also alternately arranged on the base 1 along the first direction and on both sides of the central axis 2. The parts between each pair of the spaced cuts 4 on the base 1 of the multiple bridging portions 8 form an S-shaped bridging structure, and the tensile strength of the metal skeleton is improved by the S-shaped bridging structure.

[0037] Furthermore, the side edge of the end of the second tooth wing 7 close to the central axis 2 is parallel to the side edge adjacent to the corresponding central cutout 5 .

[0038] Specifically, the second tooth wing 7 and the side of the central cutout 5 are parallel to each other so that the width of each position on the bridge portion 8 is the same, thereby ensuring the consistency of performance at any position on the bridge portion 8 .

[0039] Furthermore, the widths of all the bridge portions 8 on the base 1 are equal.

[0040] Specifically, the widths of all the bridge portions 8 are equal, so that the performance of the entire bridge structure is consistent.

[0041] Furthermore, adjacent central cutouts 5 are staggered in the second direction.

[0042] Specifically, the staggered arrangement of the adjacent central cutouts 5 can, on the one hand, better form the bridging structure, and on the other hand, make the structure of the metal skeleton more compact.

[0043] Example 2

[0044] This embodiment provides a sealing strip, comprising the high-elongation rolled-shear-stretched staggered hole metal frame as described in Example 1, and a sealing material wrapped around the outside of the metal frame.

[0045] Furthermore, the sealing material is made of plastic.

[0046] Specifically, the plastic material is preferably EPDM rubber, but may also be other rubbers.

[0047] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

Claims

1. A high-extension rolling shear stretching staggered hole metal frame, characterized in that: include: A base (1), wherein a central axis (2) of the base (1) extends along a first direction, a plurality of tooth wings (3) are arranged on both sides of the base (1), the tooth wings (3) extend along a second direction, the second direction is perpendicular to the first direction, the tooth wings (3) on both sides of the base (1) are arranged in pairs, and spaced cuts (4) are provided between adjacent tooth wings (3); a plurality of center cuts (5) are arranged along the first direction at the position of the central axis (2) of the base (1), and each center cut The cutout (5) is provided between a pair of the tooth wings (3), the central cutout (5) extends toward one side of the base (1) to the tooth wing (3) on the corresponding side, and the extension directions of two adjacent central cutouts (5) are opposite and parallel to the second direction; the tooth wing (3) to which the central cutout (5) extends is the first tooth wing (6), and the tooth wing (3) to which the central cutout (5) does not extend is the second tooth wing (7), and the first tooth wing (6) and the second tooth wing (7) are arranged alternately.

2. The high elongation rolling shear stretching staggered hole metal skeleton according to claim 1 is characterized in that: The central incision (5) is a diamond-shaped structure with one side elongated.

3. The high elongation rolling shear stretching staggered hole metal skeleton according to claim 2 is characterized in that: The width of the second tooth wing (7) close to the end of the central axis (2) is greater than the width of the first tooth wing (6) close to the end of the central axis (2).

4. The high elongation rolling shear stretching staggered hole metal skeleton according to claim 3 is characterized in that: The end of the second tooth wing (7) close to the central axis (2) and the end of the first tooth wing (6) close to the central axis (2) both have gradually changing widths, and the width of the side close to the central axis (2) is greater than the width of the side away from the central axis (2), and the degree of gradual width change of the end of the second tooth wing (7) is greater than the degree of gradual width change of the end of the first tooth wing (6).

5. The high elongation rolling shear stretching staggered hole metal skeleton according to claim 4 is characterized in that: A bridge portion (8) is formed between the second tooth wing (7) and the unextended side of the central cutout (5), and a plurality of the bridge portions (8) cooperate with the base (1) located at the central axis (2) to form a bridge structure.

6. The high elongation rolling shear stretching staggered hole metal skeleton according to claim 5 is characterized in that: The side edge of the end of the second tooth wing (7) close to the central axis (2) is parallel to the side edge adjacent to the corresponding central cutout (5).

7. The high elongation rolling shear stretching staggered hole metal skeleton according to claim 6, characterized in that: All the bridge portions (8) on the base (1) have the same width.

8. The high elongation rolling shear stretching staggered hole metal skeleton according to claim 7 is characterized in that: Adjacent central cutouts (5) are arranged in a staggered manner in the second direction.

9. A sealing strip, characterized in that: It comprises the high-elongation rolling-shear-stretching staggered hole metal skeleton as described in any one of claims 1 to 8, and a sealing material wrapped around the outside of the metal skeleton.

10. The sealing strip according to claim 9, characterized in that: The sealing material is made of plastic.

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