Dust cover tether

Abstract

The utility model discloses a dust cover lanyard, including lanyard body, be located the plastic connecting portion of lanyard body one end and be located the hardware fixed part of lanyard body other end, the plastic connecting portion is connected with dust cover plastic piece adaptation, the hardware fixed part is used for with dust cover main part fixed. Lanyard body and plastic connecting portion adopt PP7000 -FR725AB material and add UV -94V auxiliary agent, not only flame -retardant grade reaches UL94V -0, improves fire safety, can also be after UVB -313 fluorescent tube irradiation 1000h without obvious cracking discoloration, greatly prolongs the outdoor service life. In terms of connection reliability, the VDI -21 standard line coverage of plastic connecting portion outer surface is more than 90%, effectively increases the friction of dust cover plastic piece, 3 -6 anti -skid convex of hardware fixed part embeds lanyard body, enhances the connection stability, avoids the use in -mid -falling.

Description

Technical Field

[0001] This utility model relates to the field of rope technology, specifically a dust cover rope. Background Technology

[0002] As a key connecting component of dust covers, the reliability, durability, and structural stability of the dust cover's tether directly affect its performance and lifespan. Existing dust cover tethers suffer from several shortcomings: Regarding connection reliability, the connection between the tether and the plastic parts of the dust cover often loosens and falls off due to insufficient friction at the contact surfaces; the connection between the hardware fixing parts and the tether body is also prone to detachment due to unreasonable anti-slip structure design. In terms of material properties, most tethers have low flame retardant ratings and poor UV aging resistance, making them prone to cracking and discoloration in outdoor environments, significantly shortening their service life. Structurally, the tether body and connecting parts are often molded separately, leading to stress concentration and damage at the transition points, and significant overall dimensional deviations affect assembly accuracy and mass production stability. Utility Model Content

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides a dust cover tie rope, which can effectively solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A dust cover tether includes a tether body, a plastic connecting part at one end of the tether body, and a metal fixing part at the other end of the tether body; the plastic connecting part is adapted to connect with the plastic parts of the dust cover, and the metal fixing part is used to fix it to the dust cover body.

[0006] The tether body and plastic connector are made of PP7000-FR725AB material with added UV-94V additive; the maximum dimensions of the tether body are 7.0mm × 6.5mm × 3.5mm; the outer surface of the plastic connector has a VDI-21 standard texture, and it is injection molded to the tether body through a side injection port, the size of which is... The amount of glue residue at the joint is 0.05-0.15mm.

[0007] As a further description of the above technical solution, the flame retardant rating of the PP7000-FR725AB material is not lower than UL94V-0.

[0008] As a further description of the above technical solution, the VDI-21 standard texture has a coverage of no less than 90% on the outer surface of the plastic connector, and the texture depth is 0.02-0.05mm.

[0009] As a further description of the above technical solution, the plastic connecting part and the tether body are integrally formed, the length of the plastic connecting part is 1 / 3 to 1 / 2 of the total length of the tether body, and the end of the plastic connecting part near the tether body is provided with a transition rounded corner with a radius of 0.3-0.5mm.

[0010] As a further description of the above technical solution, the side glue port is arranged radially along the plastic connector, and the distance between the center of the glue port and the end face of the plastic connector away from the hardware fixing part is 1.0-1.5mm.

[0011] As a further description of the above technical solution, the hardware fixing part includes a metal ring and anti-slip protrusions provided on the inner side of the metal ring. The metal ring is nested and connected to the end of the rope body away from the plastic connection part. The anti-slip protrusions are distributed circumferentially along the metal ring and embedded in the outer surface of the rope body.

[0012] As a further description of the above technical solution, the number of anti-slip protrusions is 3-6, and the height of each anti-slip protrusion is 0.1-0.2mm and the width is 0.5-0.8mm.

[0013] As a further description of the above technical solution, the wall thickness of the tether body is uniform, and the wall thickness deviation does not exceed 0.1mm. The end of the tether body away from the plastic connection part is provided with an annular groove for positioning with the hardware fixing part. The depth of the annular groove is 0.2-0.3mm and the width is 0.8-1.2mm.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The dust cover tether of this utility model has at least one of the following beneficial effects during use:

[0016] The tether body and plastic connectors are made of PP7000-FR725AB material with added UV-94V additives. This not only achieves a UL94V-0 flame retardant rating, enhancing fire safety, but also shows no significant cracking or discoloration after 1000 hours of UVB-313 lamp irradiation, significantly extending its outdoor lifespan. Regarding connection reliability, the outer surface of the plastic connectors features over 90% VDI-21 standard texture coverage, effectively increasing friction with the dust cover's plastic parts. The 3-6 anti-slip protrusions on the hardware fixing parts are embedded in the tether body, enhancing connection stability and preventing detachment during use. Structurally, the one-piece molding design with rounded corners reduces stress concentration, and a wall thickness deviation of ≤0.1mm ensures uniform stress distribution, improving overall strength. Precise dimensional parameters and side injection port design facilitate mass production assembly, reduce injection molding defects, and ensure stable product quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the dust cover tether of this utility model;

[0018] Figure 2 This is a schematic diagram of the first side structure of the dust cover tethering rope of this utility model;

[0019] Figure 3 This is a schematic diagram of the second side structure of the dust cover tethering rope of this utility model.

[0020] Numbering on the map:

[0021] 1. Rope body; 2. Plastic connector; 3. Hardware fixing part; 4. Texture; 5. Metal ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-3 As shown, this utility model provides a dust cover tether, including a tether body 1, a plastic connecting part 2 disposed at one end of the tether body 1, and a hardware fixing part 3 disposed at the other end of the tether body 1; the plastic connecting part 2 is adapted to be connected to the plastic parts of the dust cover, and the hardware fixing part 3 is used to fix it to the main body of the dust cover.

[0024] In this embodiment, the dust cover tether mainly consists of the tether body 1, the plastic connecting part 2, and the hardware fixing part 3. The various parts work together to achieve a stable connection with the dust cover and reliable use.

[0025] The plastic connector 2 is fitted to the plastic part of the dust cover. Its outer surface has a VDI-21 standard texture 4, with a coverage of at least 90% and a depth of 0.02-0.05mm. This texture 4 design increases the friction between the plastic connector 2 and the dust cover plastic part, thereby enhancing the stability of the connection and ensuring it is not easily detached during use. Simultaneously, the plastic connector 2 is injection molded to the tether body 1 through a side adhesive port. The side adhesive port is radially positioned along the plastic connector 2 and has a dimension of [missing information]. The residual amount of glue at the nozzle is 0.05-0.15mm, and the distance between the center of the glue nozzle and the end face of the plastic connector 2 away from the hardware fixing part 3 is 1.0-1.5mm. This injection molding method ensures the tightness and structural integrity of the connection between the plastic connector 2 and the rope body 1. In addition, the plastic connector 2 and the rope body 1 are integrally molded structures. The length of the plastic connector 2 is 1 / 3-1 / 2 of the total length of the rope body 1. The end near the rope body 1 has a transition fillet with a radius of 0.3-0.5mm. This design reduces stress concentration, improves the overall structural strength, and avoids damage due to uneven stress during use.

[0026] The tether body 1 and the plastic connecting part 2 are made of PP7000-FR725AB material with added UV-94V additive; the maximum external dimensions of the tether body 1 are 7.0mm × 6.5mm × 3.5mm; the outer surface of the plastic connecting part 2 is provided with VDI-21 standard texture 4, and it is injection molded to the tether body 1 through a side glue port, the size of which is... The amount of glue residue at the joint is 0.05-0.15mm.

[0027] The metal fixing part 3 is used to fix the dust cover body, and includes a metal ring 5 and anti-slip protrusions located on the inner side of the metal ring 5. The metal ring 5 is nested and connected to the end of the tether body 1 away from the plastic connecting part 2. The anti-slip protrusions are distributed circumferentially along the metal ring 5, with a number of 3-6. Each anti-slip protrusion has a height of 0.1-0.2 mm and a width of 0.5-0.8 mm, and is embedded in the outer surface of the tether body 1. This structural design increases the connection strength between the metal fixing part 3 and the tether body 1, prevents the metal fixing part 3 from detaching from the tether body 1 during use, and ensures the reliability of the connection with the dust cover body.

[0028] The maximum external dimensions of the tether body 1 are 7.0mm × 6.5mm × 3.5mm, with uniform wall thickness and a wall thickness deviation of no more than 0.1mm. This ensures that the tether body 1 is subjected to uniform force and has a stable structure. Meanwhile, the end of the tether body 1 furthest from the plastic connector 2 is provided with an annular groove for positioning with the hardware fixing part 3. The depth of the annular groove is 0.2-0.3mm and the width is 0.8-1.2mm. This groove provides precise positioning for the installation of the hardware fixing part 3, ensuring the accuracy of the connection between the hardware fixing part 3 and the tether body 1.

[0029] The tether body 1 and the plastic connecting part 2 are made of PP7000-FR725AB material with added UV-94V additive. PP7000-FR725AB material has good mechanical and processing properties, which can meet the structural strength requirements of the tether; the UV-94V additive gives the tether body 1 and the plastic connecting part 2 excellent resistance to ultraviolet aging, so that they can maintain stable performance in different environments and ensure the normal use of the tether.

[0030] Furthermore, the flame retardant rating of the PP7000-FR725AB material is no lower than UL94V-0. This UL94V-0 rating significantly improves the fire safety of the tether and reduces the risk of fire to some extent. The added UV-94V additive ensures that the tether body 1 and the plastic connecting part 2 exhibit no significant cracking or discoloration after 1000 hours of UVB-313 lamp irradiation, extending the tether's service life and enabling long-term reliable use in outdoor environments with high UV intensity.

[0031] Furthermore, the VDI-21 standard texture 4 has a coverage rate of no less than 90% on the outer surface of the plastic connector 2, and the texture 4 has a depth of 0.02-0.05mm. This coverage of the VDI-21 standard texture 4 on the outer surface of the plastic connector 2, with a depth of 0.02-0.05mm, effectively increases the friction between the connector and the plastic parts of the dust cover, ensuring a stable connection and preventing loosening or detachment during use. The anti-slip protrusions of the hardware fixing part 3 are embedded in the outer surface of the tether body 1, and their number, height, and width are reasonably set, enhancing the connection strength between the hardware fixing part 3 and the tether body 1 and ensuring the reliability of the fixation to the dust cover body.

[0032] Furthermore, the plastic connecting part 2 and the tether body 1 are integrally molded. The length of the plastic connecting part 2 is 1 / 3 to 1 / 2 of the total length of the tether body 1, and the end of the plastic connecting part 2 near the tether body 1 has a transition fillet with a radius of 0.3-0.5 mm. The integral molding of the plastic connecting part 2 and the tether body 1, along with the transition fillet, reduces stress concentration, improves the overall structural strength and stability, and lowers the probability of damage due to structural defects. The tether body 1 has a uniform wall thickness, with a wall thickness deviation not exceeding 0.1 mm, ensuring uniform stress distribution and further enhancing structural stability.

[0033] Furthermore, the side glue port is arranged radially along the plastic connecting part 2, and the distance between the center of the glue port and the end face of the plastic connecting part 2 away from the hardware fixing part 3 is 1.0-1.5mm.

[0034] Furthermore, the hardware fixing part 3 includes a metal ring 5 and anti-slip protrusions located on the inner side of the metal ring 5. The metal ring 5 is nested and connected to the end of the tether body 1 away from the plastic connecting part 2. The anti-slip protrusions are distributed circumferentially along the metal ring 5 and embedded in the outer surface of the tether body 1. The maximum external dimensions of the tether body 1, the length of the plastic connecting part 2, the radius of the transition fillet, the size and residual amount of the side glue opening, and the depth and width of the annular groove are all precisely specified, ensuring the accuracy and consistency of the structure of each part of the tether. This facilitates the mass production and assembly of the tether and improves the quality stability of the product.

[0035] Furthermore, the number of anti-slip protrusions is 3-6, and the height of each anti-slip protrusion is 0.1-0.2mm and the width is 0.5-0.8mm.

[0036] Furthermore, the wall thickness of the tether body 1 is uniform, with a wall thickness deviation not exceeding 0.1 mm. The end of the tether body 1 furthest from the plastic connector 2 has an annular groove for positioning with the metal fixing part 3. The depth of the annular groove is 0.2-0.3 mm, and the width is 0.8-1.2 mm. The plastic connector 2 is injection molded to the tether body 1 through a side injection port. The position and size of the side injection port are rationally designed, reducing defects during the injection molding process, improving the product qualification rate, and facilitating subsequent processing.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dust cover tether, characterized by: The utility model relates to a dust cover fixing device, including the tether body, the plastic connecting part of being located the tether body one end and the hardware fixed part of being located the tether body other end, the plastic connecting part with dust cover plastic piece adaptive connection is connected, and the hardware fixed part is used for with dust cover main part fixed, The tether body and the plastic connecting part are made of PP7000-FR725AB material and added with UV-94V auxiliary agent; the maximum outer dimension of the tether body is 7.0mmx6.5mmx3.5mm; the outer surface of the plastic connecting part is provided with VDI-21 standard lines, which is injection molded with the tether body through a side glue port, and the size of the side glue port is The glue port residual amount is 0.05-0.15mm.

2. A dust cover tether as claimed in claim 1, wherein: The flame-retardant grade of the PP7000-FR725AB material is not less than UL94V-0.

3. A dust cover tether as claimed in claim 1, wherein: The coverage of the VDI-21 standard pattern on the outer surface of the plastic connecting part is not less than 90%, and the pattern depth is 0.02-0.05mm.

4. A dust cover tether as claimed in claim 1, wherein: The plastic connecting part and the tether body are integrally formed, the length of the plastic connecting part is 1 / 3-1 / 2 of the total length of the tether body, and the plastic connecting part is provided with a transition fillet close to one end of the tether body, and the radius of the transition fillet is 0.3-0.5mm.

5. A dust cover tether as claimed in claim 1, wherein: The side glue port is arranged along the radial direction of the plastic connecting part, and the distance between the glue port center and the end face of the plastic connecting part away from the hardware fixed part is 1.0-1.5mm.

6. A dust cover tether as claimed in claim 1, wherein: The hardware fixed part includes a metal ring and an anti-skid protrusion arranged on the inner side of the metal ring, the metal ring is nestedly connected with one end of the tether body away from the plastic connecting part, the anti-skid protrusion is distributed along the circumference of the metal ring, and is embedded in the outer surface of the tether body.

7. A dust cover tether as claimed in claim 6, wherein: The number of the anti-skid protrusions is 3-6, the height of each anti-skid protrusion is 0.1-0.2mm, and the width is 0.5-0.8mm.

8. A dust cover tether as claimed in claim 1, wherein: The wall thickness of the tether body is uniform, the wall thickness deviation is not more than 0.1mm, and one end of the tether body away from the plastic connecting part is provided with an annular groove for positioning with the hardware fixed part, the depth of the annular groove is 0.2-0.3mm, and the width is 0.8-1.2mm.

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