阅读说明：本技术 一种耐火电缆组件及其制作方法 (Fire-resistant cable assembly and manufacturing method thereof ) 是由 丛佩玺 陈德杰 石荣荣 于 2021-06-21 设计创作，主要内容包括：一种耐火电缆组件,包括连接器、尾部附件,还包括耐火电缆,耐火电缆包括多根导线集束而成的导线束,导线束端部与连接器连接,连接器尾部连接有套设在导线束上的尾部附件；导线束外侧缠绕有防护层,防护层从内到外依次为石棉绝缘布带、玻璃丝布、防火耐温棉毯、玻璃丝布、氟橡胶布,用于对导线束进行防护。与现有技术相比,该发明的有益之处在于：1、无需定制耐火导线；2、所用材料均为成熟的工业材料,无需专业定制,无需依赖进口物料；3、装配工艺方法简单,易加工,一致性好；4、成本低。(A fire-resistant cable assembly comprises a connector, a tail accessory and a fire-resistant cable, wherein the fire-resistant cable comprises a conductor bundle formed by bundling a plurality of conductors, the end part of the conductor bundle is connected with the connector, and the tail of the connector is connected with the tail accessory which is sleeved on the conductor bundle; the protective layer is wound on the outer side of the conductor bundle and sequentially comprises an asbestos insulation cloth belt, glass fiber cloth, a fireproof temperature-resistant cotton blanket, glass fiber cloth and fluororubber cloth from inside to outside and is used for protecting the conductor bundle. Compared with the prior art, the invention has the advantages that: 1. no need to customize the fire-resistant wire; 2. the used materials are mature industrial materials, professional customization is not needed, and import materials are not needed; 3. the assembly process method is simple, easy to process and good in consistency; 4. the cost is low.)

1. A fire resistant cable assembly comprising a connector (19), a tail fitting (18), characterized in that: the fireproof cable comprises a conductor bundle (7) formed by bundling a plurality of conductors, the end part of the conductor bundle (7) is connected with a connector (19), and the tail part of the connector (19) is connected with a tail part accessory (18) sleeved on the conductor bundle (7); the outer side of the wire bundle (7) is wound with a protective layer, and the protective layer is sequentially provided with an asbestos insulation cloth belt (14), glass fiber cloth (15), a fireproof temperature-resistant cotton blanket (16), the glass fiber cloth (15) and fluorine rubber cloth (17) from inside to outside and is used for protecting the wire bundle (7).

2. The fire resistant cable assembly of claim 1, wherein: and a glass fiber rope (20) for preventing the protective layer from loosening is wound on the outer side of the protective layer.

3. The fire resistant cable assembly of claim 1, wherein: the tail accessory (18) is in threaded connection with the connector (19).

4. The fire resistant cable assembly of claim 1, wherein: the two ends of the wire bundle (7) are not wound with protective layers so as to be connected with the connector (19).

5. A method of making a fire resistant cable assembly, comprising: the method comprises the following steps:

(1) preparing materials, wherein the materials comprise a connector (19), a tail accessory (18), a lead, materials for a protective layer, a mark and a mark sleeve;

(2) correspondingly marking each contact in the connector (19) and the marking sleeve corresponding to each contact;

(3) cutting the lead to meet the length requirement of the fire-resistant cable assembly;

(4) sleeving two identical identification sleeves corresponding to the contact elements on corresponding lead wires, moving the identification sleeves to two ends of the lead wires, and wiring and bundling the identification sleeves into a lead bundle (7) according to the appearance of the fire-resistant cable assembly;

(5) the lead and the contact in the connector (19) are pressed according to the corresponding marks, and the connection of the lead and the contact in the connector (19) is completed;

(6) the method comprises the following steps of sequentially winding materials used for a protective layer outside a wire bundle (7) outside the wire bundle (7), wherein the winding sequence from inside to outside is as follows: the fireproof heat-resistant cotton cloth comprises an asbestos insulation cloth belt (14), glass fiber cloth (15), a fireproof heat-resistant cotton blanket (16), glass fiber cloth (15) and fluororubber cloth (17);

(7) assembling the wire harness (7) with the connector (19) through the contact member, and assembling the tail accessory with the connector (19) through the threaded connection;

(8) detecting the whole fire-resistant cable assembly, and confirming that the detection performance is qualified;

(9) performing anti-loosening treatment on the binding position of the fire-resistant cable assembly, and treating the identifier;

(10) and (6) detecting and accepting.

6. The method of making a fire resistant cable assembly according to claim 5, wherein: when the protective layer is wound, the two ends of the wire bundle (7) are not wound so that the wires can be mounted on the connector (19).

7. The method of making a fire resistant cable assembly according to claim 5, wherein: after the materials of the protective layer are sequentially wound on the wire bundle (7), the protective layer is bundled by using a glass fiber rope (20) to prevent the protective layer from loosening.

Technical Field

The invention belongs to the technical field of cables, and particularly relates to a fire-resistant cable assembly and a manufacturing method thereof.

Background

The fire alarm cable assembly is used as a transmission carrier of signals in a fire alarm signal system, can still keep the function of signal transmission in a fire state, and is a very key design point. A general cable assembly cannot satisfy a signal transmission function for a certain time in a fire state. The cable assembly generally comprises a connector (plug or receptacle), tail fittings, wires, shielding, etc., and is configured as shown in fig. 1.

Currently, there are two ways to realize the function of the cable assembly that can still maintain signal transmission in a fire state. One mode is that the cable assembly directly adopts a fire-resistant wire to complete the assembly of the cable assembly and realize the fire-resistant function; the other way is that the cable component adopts a general conductor conforming to GJB773B, and a protective layer is added outside the conductor bundle to realize the fire-resistant function. The cable subassembly directly adopts fire-resistant wire can the most direct effectual fire prevention function who realizes the cable subassembly, but the fire-resistant wire relies on the import seriously at present, and the production demand can't be satisfied even to the disconnected goods.

Disclosure of Invention

In order to realize the fireproof function of the cable assembly, the invention provides the fireproof cable assembly and the manufacturing method thereof, which can economically and effectively realize the fireproof function of the cable assembly.

The purpose of the invention is realized by adopting the following technical scheme. The fire-resistant cable assembly comprises a connector, a tail accessory and a fire-resistant cable, wherein the fire-resistant cable comprises a lead bundle formed by bundling a plurality of leads, the end part of the lead bundle is connected with the connector, and the tail of the connector is connected with the tail accessory which is sleeved on the lead bundle; the protective layer is wound on the outer side of the conductor bundle and sequentially comprises an asbestos insulation cloth belt, glass fiber cloth, a fireproof temperature-resistant cotton blanket, glass fiber cloth and fluororubber cloth from inside to outside and is used for protecting the conductor bundle.

Furthermore, the outer side of the protective layer is wound with a glass fiber rope for preventing the protective layer from loosening.

Further, the tail accessory is in threaded connection with the connector.

Further, the two ends of the wire bundle are not wound with the protective layer so as to be connected with the connector.

A method of making a fire resistant cable assembly comprising the steps of:

(1) preparing materials, wherein the materials comprise a connector, a tail accessory, a lead, materials used by a protective layer, a mark and a mark sleeve;

(2) correspondingly marking each contact element in the connector and the marking sleeve corresponding to each contact element;

(3) cutting the lead to meet the length requirement of the fire-resistant cable assembly;

(4) sleeving two identical identification sleeves corresponding to the contact elements on corresponding lead wires, moving the identification sleeves to two ends of the lead wires, and wiring and bundling the identification sleeves into a lead bundle (7) according to the appearance of the fire-resistant cable assembly;

(5) the wire and the contact element in the connector are crimped according to the corresponding marks of the wire and the contact element to complete the connection of the wire and the contact element in the connector;

(6) the material used by the protective layer outside the wire bundle is sequentially wound outside the wire bundle, and the winding sequence from inside to outside is as follows: asbestos insulation cloth belt, glass fiber cloth, fireproof temperature-resistant cotton blanket, glass fiber cloth and fluorine rubber cloth;

(7) assembling the harness with the connector through the contact member, the tail attachment being assembled with the connector through a threaded connection;

(8) detecting the whole fire-resistant cable assembly, and confirming that the detection performance is qualified;

(9) performing anti-loosening treatment on the binding position of the fire-resistant cable assembly, and treating the identifier;

(10) and (6) detecting and accepting.

Further, when the protective layer is wound, both end portions of the wire harness are not wound, so that the wire is mounted on the connector.

Further, after the material of the protective layer is sequentially wound on the wire bundle, the protective layer is bundled by using a glass fiber rope to prevent the protective layer from loosening.

Compared with the prior art, the invention has the advantages that:

1. no need to customize the fire-resistant wire;

2. the used materials are mature industrial materials, professional customization is not needed, and import materials are not needed;

3. the assembly process method is simple, easy to process and good in consistency;

4. the cost is low.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of a prior art cable assembly;

FIG. 2 is a schematic structural view of a fire resistant cable assembly and method of making the same according to the present invention;

fig. 3 is an enlarged view of a portion a in fig. 2.

[ reference numerals ]

1-connector 1, 2-tail accessory 1, 3-connector 2, 4-tail accessory 2, 5-connector 3, 6-tail accessory 3, 7-wire harness, 8-protective layer 1, 9-protective layer 2, 10-protective layer 3, 11-mark, 12-tail accessory 5, 13-connector 5, 14-asbestos insulation cloth tape, 15-glass fiber cloth, 16-fireproof temperature-resistant cotton blanket, 17-fluorine rubber cloth, 18-external accessory, 19-connector, 20-glass fiber rope.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 2 to 3 are schematic structural views of a fire-resistant cable assembly and a method for manufacturing the fire-resistant cable assembly according to the present invention. The fire resistant cable assembly includes a connector 19, a tail fitting 18, a fire resistant cable. The fire-resistant cable comprises a conductor bundle 7 and a protective layer, wherein the conductor bundle 7 is formed by bundling a plurality of conductors, and the protective layer is wrapped on the conductor bundle 7. At the end position of the fire-resistant cable, the conductor bundle 7 extends out of the protective layer, and the extending part of the conductor bundle 7 is connected with a connector 19 and a tail accessory 18 in sequence from head to tail. A connector 19 is mounted on the end of the wire bundle 7, the connector 19 being a plug or receptacle connector. The connector is terminated with a tail attachment 19 and the tail attachment 18 is nested outside the wire bundle 7. The tail attachment 18 is secured to the connector 19 by a threaded connection. The outer side of the main body of the wire bundle 7 is wrapped with a protective layer, and the cross section of any part of the cable except the end part is sequentially provided with the wire bundle 7, an asbestos insulation cloth belt 14, glass fiber cloth 15, a fireproof temperature-resistant cotton blanket 16, the glass fiber cloth 15 and fluororubber cloth 17 from inside to outside. The outer side of the protective layer is wound with glass fiber ropes 20 at intervals to prevent the protective layer from loosening, and the glass fiber ropes 20 have a certain width in the extension direction of the fire-resistant cable. The manufacturing method of the fire-resistant cable assembly comprises the following steps:

(1) preparing materials: the material comprises a connector 19, a tail accessory 18, a lead, a material used by a protective layer, a mark and a mark sleeve;

(2) marking: correspondingly identifying each contact in the connector 19 and the identification sleeve corresponding to each contact;

(3) and (3) offline: cutting the lead to a certain length to meet the length requirement of the fire-resistant cable assembly;

(4) wiring: sleeving two identical identification sleeves corresponding to the contact elements on corresponding leads, moving the identification sleeves to two ends of the leads, and wiring and bundling the identification sleeves into a lead bundle 7 according to the appearance of the fire-resistant cable assembly;

(5) and (3) crimping: the lead and the corresponding contact in the connector 19 are crimped according to the respective marks of the lead and the corresponding contact to complete the connection between the lead and the contact in the connector 19;

(6) assembling: the materials used for the outer protective layer of the wire bundle 7 are sequentially assembled outside the wire bundle 7, and the assembly sequence from inside to outside is as follows: the asbestos insulation cloth belt 14-the glass fiber cloth 15-the fireproof temperature-resistant cotton blanket 16-the glass fiber cloth 15-the fluorine rubber cloth 17, the above materials are sequentially half lapped and wound on the conductor bundle 7 to form a cable, when winding, a part is left at two ends of the conductor bundle 7 and is not wound, so that the conductor is mounted on the connector 19; after the materials of the protective layer are sequentially wound on the conductor bundle 7, the cable is bundled by using the glass fiber ropes 20 at certain intervals to prevent the protective layer from loosening, and the bundled glass fiber ropes 20 have certain width in the extending direction of the conductor bundle 7;

(7) assembling: assembling the wire harness 7 with the connector 19 through the contact, and assembling the tail accessory with the connector 19 through the screw thread;

(8) and (3) detection: detecting the whole fire-resistant cable assembly, and confirming that the detection performance is qualified;

(9) assembling: performing anti-loosening treatment on the binding position of the fire-resistant cable assembly, and treating the identifier;

(10) and (6) detecting and accepting.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.