TWI719441B

TWI719441B - Cable sheath for vehicle

Info

Publication number: TWI719441B
Application number: TW108111560A
Authority: TW
Inventors: 溫芫鋐
Original assignee: 溫芫鋐
Priority date: 2018-04-12
Filing date: 2018-04-12
Publication date: 2021-02-21
Also published as: TW201943972A

Abstract

A cable sheath for a vehicle is provided, including: an inner tube; a metal layer, disposed around the inner tube; a first annular layer, disposed around the metal layer, being a polymer of polypropylene (PP); a second annular layer, disposed around the first annular layer, being a polymer of PP which is different from the polymer of PP of the first annular layer.

Description

Catheters for vehicles

本發明係有關於一種車輛用導管。The invention relates to a catheter for a vehicle.

一般車輛(如自行車或機車)用於剎車線或變速線之操作線組包括一導管及一內線，該導管供該內線穿設使該內線可於該導管之內部空間滑動，並提供防潮及抗衝擊等效果以保護該內線。The operating wire set for brake cables or shifting cables of general vehicles (such as bicycles or motorcycles) includes a catheter and an inner wire. The inner wire is threaded through the inner wire so that the inner wire can slide in the inner space of the catheter, and provides moisture and resistance. Impact and other effects to protect the inner line.

該導管結構一般包括一內管、一金屬層及一外層。習知之該外層多數為塑膠材料構成之多層結構，包覆該金屬層並避免內部構件因環境或其他外力因素造成損壞。然，於該線組於操作時該金屬層會產生形變，導致披覆於該金屬層表面之該外層亦會被拉扯，而習用之該外層材質機械性質不足，於長時間使用下常會造成該外層破裂或磨損而無法繼續使用。The catheter structure generally includes an inner tube, a metal layer, and an outer layer. The conventional outer layer is mostly a multi-layer structure composed of plastic material, which covers the metal layer and prevents internal components from being damaged due to the environment or other external forces. However, the metal layer will be deformed during the operation of the wire set, causing the outer layer covering the surface of the metal layer to be pulled, and the conventional outer layer material has insufficient mechanical properties, which will often cause the The outer layer is cracked or worn and can no longer be used.

因此，有必要提供一種新穎且具有進步性之車輛用導管，以解決上述之問題。Therefore, it is necessary to provide a novel and advanced vehicle catheter to solve the above-mentioned problems.

本發明之主要目的在於提供一種車輛用導管，可具有較佳之抗外力特性。The main purpose of the present invention is to provide a catheter for a vehicle, which can have better resistance to external forces.

為達成上述目的，本發明提供一種車輛用導管，包括：一內管；一金屬層，環設於該內管外；一第一環層，環設於該金屬層外，為聚丙烯（Polypropylene, PP）之聚合物；一第二環層，環設於該第一環層外，為與該第一環層相異之PP之聚合物；其中該第一環層之韌性大於PP之單聚合物（Homopolymer），該第二環層之強度大於PP之單聚合物。In order to achieve the above object, the present invention provides a catheter for a vehicle, including: an inner tube; a metal layer ringed outside the inner tube; a first ring layer ringed outside the metal layer, made of polypropylene (Polypropylene) , PP) polymer; a second ring layer, ringed outside the first ring layer, is a polymer of PP that is different from the first ring layer; wherein the toughness of the first ring layer is greater than that of PP Homopolymer, the strength of the second ring layer is greater than that of a single polymer of PP.

以下僅以實施例說明本發明可能之實施態樣，然並非用以限制本發明所欲保護之範疇，合先敘明。The following examples are only used to illustrate the possible implementation aspects of the present invention, but they are not intended to limit the scope of protection of the present invention, and are described first.

請參考圖1至2，其顯示本發明之一較佳實施例，本發明之車輛用導管1包括一內管10、一金屬層20、一第一環層30及一第二環層40。該車輛用導管1例如可應用於剎車線、變速線、油門線等。Please refer to FIGS. 1 to 2, which show a preferred embodiment of the present invention. The catheter 1 for a vehicle of the present invention includes an inner tube 10, a metal layer 20, a first ring layer 30 and a second ring layer 40. The vehicle catheter 1 can be applied to, for example, brake cables, shift cables, accelerator cables, and the like.

該內管10例如供一芯線可活動地穿設；該金屬層20環設於該內管10外；該第一環層30環設於該金屬層20外且為聚丙烯（Polypropylene, PP）之聚合物；該第二環層40環設於該第一環層30外且為與該第一環層30相異之PP之聚合物。藉此，該車輛用導管1具有較佳之抗外力特性。For example, the inner tube 10 can be movably passed through by a core wire; the metal layer 20 is looped around the inner tube 10; the first loop layer 30 is looped around the metal layer 20 and is made of polypropylene (PP) The polymer; the second ring layer 40 is located outside the first ring layer 30 and is a polymer of PP that is different from the first ring layer 30. As a result, the vehicle catheter 1 has better resistance to external forces.

其中，該第一環層30之韌性大於PP之單聚合物（Homopolymer），當該金屬層20產生形變而拉扯該第一環層30時，該第一環層30可拉伸而不易破裂。該第二環層40之強度大於PP之單聚合物而具較佳結構強度，對外力之耐受度較高。其中，「韌性」係指材料受力直至斷裂時所能容忍的力量大小；「強度」係指材料受外力時抵抗破壞之能力；「韌性」及「強度」之評估指標包括耐衝擊強度（Impact Strength）、降伏強度（Yield Strength）、抗拉強度（Tensile Strength）及楊氏模數（Young's modulus）至少其中一者的機械性質之考量。Wherein, the toughness of the first ring layer 30 is greater than that of PP (Homopolymer). When the metal layer 20 is deformed and the first ring layer 30 is pulled, the first ring layer 30 can be stretched and not easily broken. The strength of the second ring layer 40 is greater than that of a single polymer of PP, so it has better structural strength and higher resistance to external forces. Among them, "toughness" refers to the strength that a material can tolerate when it is stressed until it breaks; "strength" refers to the ability of a material to resist damage when subjected to external forces; the evaluation indicators of "toughness" and "strength" include impact resistance The consideration of the mechanical properties of at least one of Strength, Yield Strength, Tensile Strength and Young's modulus.

詳細說，該第一環層30包括乙烯丙烯橡膠（Ethylene Propylene Rubber, EPR），可提升該第一環層30之耐衝擊性。該第一環層30較佳係為具有聚丙烯耐衝擊共聚合物(Polypropylene Impact Copolymer) 之材質，具有長期熱安定性、耐化學性及耐酸鹼性等特性，且於常溫及低溫下皆有良好的耐衝擊性，使該第一環層30之韌性佳且不易因氣溫變化而老化損壞。其中，該第一環層30之韌性或強度較佳是大於聚丙烯改性聚合物(Globalene^® 667A)；該第一環層30較佳係為聚丙烯耐衝擊共聚合物(Globalene^® 7633U)，增加耐衝擊性。該第二環層40係為具有聚丙烯無規共聚合物(Polypropylene Random Copolymer) 之材質，流動性高易於加工且具有耐化學性及耐酸鹼性之特性，進一步保護內部構件避免破壞。該第二環層40較佳係為聚丙烯無規共聚合物(Globalene^® ST757M)。In detail, the first ring layer 30 includes Ethylene Propylene Rubber (EPR), which can improve the impact resistance of the first ring layer 30. The first ring layer 30 is preferably made of polypropylene impact copolymer (Polypropylene Impact Copolymer), which has the characteristics of long-term thermal stability, chemical resistance, acid and alkali resistance, etc., and is both at room temperature and low temperature. It has good impact resistance, so that the first ring layer 30 has good toughness and is not easily damaged due to temperature changes. Wherein, the toughness or strength of the first ring layer 30 is preferably greater than that of polypropylene modified polymer (Globalene ^® 667A); the first ring layer 30 is preferably a polypropylene impact-resistant copolymer (Globalene ^® 7633U) , Increase impact resistance. The second ring layer 40 is made of polypropylene random copolymer (Polypropylene Random Copolymer), which has high fluidity, easy processing, chemical resistance, acid and alkali resistance, and further protects internal components from damage. The second ring layer 40 is preferably polypropylene random copolymer (Globalene ^® ST757M).

1‧‧‧車輛用導管 10‧‧‧內管 20‧‧‧金屬層 30‧‧‧第一環層 40‧‧‧第二環層 1‧‧‧Vehicle pipe 10‧‧‧Inner tube 20‧‧‧Metal layer 30‧‧‧First Ring Floor 40‧‧‧Second Ring Floor

圖1為本發明一較佳實施例之立體圖。圖2為本發明一較佳實施例之剖面圖。Figure 1 is a perspective view of a preferred embodiment of the present invention. Figure 2 is a cross-sectional view of a preferred embodiment of the present invention.

1‧‧‧車輛用導管 1‧‧‧Vehicle pipe

10‧‧‧內管 10‧‧‧Inner tube

20‧‧‧金屬層 20‧‧‧Metal layer

30‧‧‧第一環層 30‧‧‧First Ring Floor

40‧‧‧第二環層 40‧‧‧Second Ring Floor

Claims

A catheter for a vehicle, including: An inner tube A metal layer surrounding the inner tube; A first ring layer, ringed on the outside of the metal layer, is a polymer of polypropylene (PP); A second ring layer, ringed outside the first ring layer, is a PP polymer that is different from the first ring layer; The toughness of the first ring layer is greater than that of PP single polymer (Homopolymer), and the strength of the second ring layer is greater than that of PP single polymer.

The vehicle catheter according to claim 1, wherein the toughness or strength of the first ring layer is greater than that of the polypropylene modified polymer.

The vehicle catheter according to claim 1, wherein the first ring layer includes Ethylene Propylene Rubber (EPR).

The catheter for a vehicle according to claim 3, wherein the first ring layer is made of polypropylene impact copolymer (Polypropylene Impact Copolymer).

The vehicle catheter according to claim 1, wherein the second ring layer is made of polypropylene random copolymer (Polypropylene Random Copolymer).

The vehicle catheter according to claim 4, wherein the toughness or strength of the first ring layer is greater than that of the polypropylene modified polymer; and the second ring layer is made of polypropylene random copolymer.