Flame-retardant electronic wire harness

Abstract

The utility model discloses a flame-retardant electronic wire harness, which comprises a wire harness main body, a joint assembly and a flame-retardant assembly, the flame-retardant assembly comprises a corrugated flame-retardant sleeve and a lug boss, the lug boss is integrally formed on the outer wall of the corrugated flame-retardant sleeve, and a threaded sleeve and a threaded ring are respectively integrally formed at two ends of the corrugated flame-retardant sleeve. According to the utility model, the outer wall of the wire rod part is coated with the corrugated flame-retardant sleeve, so that when a fire occurs, the corrugated flame-retardant sleeve is firstly contacted with flame, thereby slowing down the rate of contact between the wire harness main body and the flame, improving the flame-retardant effect of the wire harness main body, and prolonging the service life of the wire harness main body. The two corrugated flame-retardant sleeves are in threaded connection through the threaded sleeves and the threaded rings, so that the use number of the corrugated flame-retardant sleeves can be conveniently adjusted according to the length of the wire harness main body, and the use flexibility is improved; and through the arrangement of the clamping hole, the end part of the connector and the clamping head, the two joint assemblies can be conveniently fixed in a clamping manner.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic wire harnesses, in particular to a flame retardant electronic wire harness. Background Art

[0002] In the prior art, the function of the electronic wiring harness is to connect two electrical devices to achieve signal transmission. When the electronic wiring harness is used for a long time, due to the aging of its surface, it is easy to leak electricity, which may cause fire. Especially when the electronic wiring harnesses are densely distributed, when one of the electronic wiring harnesses catches fire, the remaining electronic wiring harnesses will also be affected. Therefore, it is necessary to optimize the design of the flame retardancy of the electronic wiring harnesses.

[0003] After searching, the Chinese patent application number 202220037774.1 discloses a flame-retardant connecting wire harness, including a wire body mechanism, a conductive mechanism, a joint mechanism, a sealing mechanism and a flame-proof mechanism. The conductive mechanism is located at the front end of the outer end of the wire body mechanism, the joint mechanism is located at the front end of the conductive mechanism, the sealing mechanism is located at the front end of the joint mechanism, the flame-proof mechanism is located at the outer end of the joint mechanism, the wire body mechanism includes a wire bundle and a protective jacket, and the protective jacket is fixedly installed at the outer end of the wire bundle.

[0004] A flame-retardant connecting wire harness in the above patent has the following deficiencies: when the wire harness is flame-retardant, the protective jacket at its outer end is used. Although it has a certain flame-retardant function, the protective jacket can only serve the purpose of single-layer flame retardancy. When the flame penetrates the protective jacket, it will damage the wire harness. Therefore, the flame-retardant time of the wire harness cannot be effectively delayed, resulting in deficiencies in flame retardancy. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a flame retardant electronic wiring harness.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A flame-retardant electronic wiring harness comprises a wiring harness body, a connector assembly and a flame-retardant assembly, wherein the flame-retardant assembly comprises a corrugated flame-retardant sleeve and a protrusion, wherein the protrusion is integrally formed on the outer wall of the corrugated flame-retardant sleeve, and a threaded sleeve and a threaded ring are integrally formed at both ends of the corrugated flame-retardant sleeve, respectively, and an internal thread matching the outer diameter of the threaded ring is provided on the circumferential inner wall of the threaded sleeve.

[0008] As a further solution of the utility model: the connector assembly includes a connector housing and a connector end, the connector housing and the connector end are integrally cast, and the two connector ends are fixed by a fixing piece.

[0009] As a further solution of the utility model: the fixing member includes a clamping block and a clamping head, and the clamping block and the clamping head are respectively integrally formed on the outer walls of the two connector ends, a clamping hole is opened on the surface of the clamping head, and the inner diameter of the clamping hole and the outer diameter of the clamping block are adapted to each other.

[0010] As a further solution of the utility model: a limit plate is integrally formed on the circumferential inner wall of the connector housing, and a notch formed between the limit plate and the end of the connector is adapted to the threaded sleeve and the threaded ring.

[0011] As a further solution of the utility model: the wiring harness body includes a terminal part and a wire part, the wire part includes a core wire and a shielding layer, and the shielding layer is installed on the outer wall of the core wire by covering.

[0012] As a further solution of the utility model: the wire part also includes a flame retardant layer sleeved on the outer wall of the shielding layer and a corrosion resistant layer sleeved on the outer wall of the flame retardant layer.

[0013] As a further solution of the utility model: the terminal part includes a wiring harness female end and a wiring harness male end, and the wiring harness female end and the wiring harness male end are respectively fixed to the two ends of the core wire by riveting.

[0014] As a further solution of the utility model: a semicircular clamping ring adapted to the female end and the male end of the wiring harness is integrally formed on the inner surface of the connector housing.

[0015] Compared with the prior art, the utility model provides a flame retardant electronic wiring harness, which has the following beneficial effects:

[0016] By covering the outer wall of the wire part with the corrugated flame-retardant sleeve, when a fire occurs, the corrugated flame-retardant sleeve first contacts the flame, thereby slowing down the contact rate between the wire harness body and the flame, and improving the flame-retardant effect of the wire harness body.

[0017] By arranging the two corrugated flame-retardant sleeves to be threadedly connected through the threaded sleeve and the threaded ring, it is convenient to adjust the number of corrugated flame-retardant sleeves to be used according to the length of the wiring harness body, thereby improving the flexibility of use.

[0018] By providing a snap-fit ​​hole, a connector end and a snap head, it is convenient to fix the two joint components by snapping together, and by providing a limiting plate and a semicircular snap ring, it is convenient to limit and fix the flame retardant component and the joint component.

[0019] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a flame-retardant electronic wiring harness proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the side structure of a flame-retardant electronic wiring harness proposed by the utility model;

[0022] Figure 3 This is a schematic diagram of an installation structure of a connector of a flame-retardant electronic wiring harness proposed by the utility model;

[0023] Figure 4 This is a schematic diagram of a second installation structure of a connector of a flame-retardant electronic wiring harness proposed by the utility model;

[0024] Figure 5 This is a schematic diagram of the explosion structure of a flame-retardant electronic wiring harness connector body proposed by the utility model;

[0025] Figure 6 This is a schematic diagram of the installation structure of a flame-retardant sleeve of a flame-retardant electronic wiring harness proposed by the utility model;

[0026] Figure 7 The utility model is a schematic diagram of the main structure of a flame-retardant electronic wiring harness.

[0027] In the figure: 1-corrugated flame retardant sleeve, 2-connector housing, 3-wire harness female end, 4-clamping hole, 5-connector end, 6-protrusion, 7-clamp block, 8-clamp head, 9-corrosion resistant layer, 10-wire harness male end, 11-semicircular clamping ring, 12-limiting plate, 13-threaded sleeve, 14-threaded ring, 15-flame retardant layer, 16-shielding layer, 17-core wire. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0030] A flame retardant electronic wiring harness, in order to improve the flame retardant performance of the wiring harness, such as Figure 1-7As shown, it includes a wiring harness body, a connector assembly and a flame retardant assembly, the flame retardant assembly includes a corrugated flame retardant sleeve 1 and a protrusion 6, the protrusion 6 is integrally formed on the outer wall of the corrugated flame retardant sleeve 1, and the two ends of the corrugated flame retardant sleeve 1 are respectively integrally formed with a threaded sleeve 13 and a threaded ring 14, and the inner wall of the circumference of the threaded sleeve 13 is provided with an internal thread that matches the outer diameter of the threaded ring 14;

[0031] The raised portion 6 is used to make the corrugated flame-retardant sleeve 1 have a certain degree of ductility and elasticity in structure, so that after the wiring harness body is sleeved inside the corrugated flame-retardant sleeve 1, it is convenient to install the wiring harness body. When the length of the wiring harness body is long and exceeds the maximum elongation of a single corrugated flame-retardant sleeve 1, the threaded ring 14 of one corrugated flame-retardant sleeve 1 and the threaded sleeve 13 of another corrugated flame-retardant sleeve 1 are threadedly connected, so that it is convenient to set the usage of the corrugated flame-retardant sleeve 1 according to the length of the wiring harness body. The corrugated flame-retardant sleeve 1 is a composite material, and a certain amount of flame retardant is added to the processed raw materials to make it fire-resistant. At the same time, the corrugated flame-retardant sleeve 1 covers the wiring harness body, thereby slowing down the speed at which the wiring harness body contacts the flame and prolonging the fire-resistant time of the wiring harness body.

[0032] Further, the connector assembly includes a connector housing 2 and a connector end 5, the connector housing 2 and the connector end 5 are integrally cast, and the two connector ends 5 are fixed by a fixing member, the fixing member includes a clamping block 7 and a clamping head 8, and the clamping block 7 and the clamping head 8 are respectively integrally formed on the outer walls of the two connector ends 5, a clamping hole 4 is opened on the surface of the clamping head 8, and the inner diameter of the clamping hole 4 and the outer diameter of the clamping block 7 are adapted to each other;

[0033] During assembly, after the two connector ends 5 are fitted together, the snap-in hole 4 on the clamp head 8 is inserted into the clamp block 7 to complete the fixation between the two connector ends 5. The material of the connector assembly is preferably ABS material, and a certain amount of flame retardant is also added to the processing raw materials of the connector assembly to improve its flame retardant performance.

[0034] Furthermore, the connector housing 2 has a limit plate 12 integrally formed on the inner circumferential wall, and the notch formed between the limit plate 12 and the connector end 5 is adapted to the threaded sleeve 13 and the threaded ring 14;

[0035] When it is necessary to connect the joint assembly and the flame retardant assembly, the threaded ring 14 and the threaded sleeve 13 are respectively inserted into the notches in the connector end 5, and the notches are used to limit the threaded ring 14 and the threaded sleeve 13 to avoid relative displacement of the threaded sleeve 13 and the threaded ring 14 relative to the connector end 5.

[0036] Further, the wire harness body includes a terminal portion and a wire portion, the wire portion includes a core wire 17 and a shielding layer 16, the shielding layer 16 is installed on the outer wall of the core wire 17 by covering, and the wire portion also includes a flame retardant layer 15 sleeved on the outer wall of the shielding layer 16 and a corrosion resistant layer 9 sleeved on the outer wall of the flame retardant layer 15;

[0037] The shielding layer 16 is preferably made of nickel-copper conductive cloth, which effectively improves the electromagnetic shielding performance of the wiring harness body. The flame retardant layer 15 is preferably made of glass fiber cotton, which improves the flame retardant effect of the wiring harness body. The corrosion-resistant layer 9 is preferably made of hydrogenated nitrile butadiene to improve corrosion resistance.

[0038] The terminal portion includes a wiring harness female end 3 and a wiring harness male end 10, and the wiring harness female end 3 and the wiring harness male end 10 are respectively fixed to the two ends of the core wire 17 by riveting, and the inner surface of the connector housing 2 is integrally formed with a semicircular clamping ring 11 adapted to the wiring harness female end 3 and the wiring harness male end 10;

[0039] By providing the semicircular clamping ring 11 , the wiring harness female end 3 and the wiring harness male end 10 can be fixedly connected to the connector housing 2 by clamping.

[0040] Working principle: During assembly, first select the number of corrugated flame-retardant sleeves 1 according to the length of the wire portion. When multiple sets of corrugated flame-retardant sleeves 1 are needed, threaded connection is performed between two corrugated flame-retardant sleeves 1 through threaded sleeves 13 and threaded rings 14. Then, the threaded sleeves 13, threaded rings 14 and the notches on the connector end 5 are clamped. Then, after the wiring harness body passes through the corrugated flame-retardant sleeves 1, the semicircular clamping ring 11 is used to fix the female end 3 and the male end 10 of the wiring harness. Finally, the two connector assemblies are connected and fixed using a fixing piece.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flame retardant electronic wiring harness, comprising a wiring harness body, a connector assembly and a flame retardant assembly, characterized in that: The flame retardant assembly comprises a corrugated flame retardant sleeve (1) and a raised portion (6), wherein the raised portion (6) is integrally formed on the outer wall of the corrugated flame retardant sleeve (1), and a threaded sleeve (13) and a threaded ring (14) are integrally formed at both ends of the corrugated flame retardant sleeve (1), respectively, and an internal thread matching the outer diameter of the threaded ring (14) is provided on the circumferential inner wall of the threaded sleeve (13).

2. A flame retardant electronic wire harness according to claim 1, characterized in that: The connector assembly comprises a connector housing (2) and a connector end (5); the connector housing (2) and the connector end (5) are integrally cast, and the two connector ends (5) are fixed by means of a fixing piece.

3. A flame retardant electronic wire harness according to claim 2, characterized in that: The fixing member comprises a clamping block (7) and a clamping head (8), and the clamping block (7) and the clamping head (8) are respectively integrally formed on the outer walls of the two connector ends (5), a clamping hole (4) is provided on the surface of the clamping head (8), and the inner diameter of the clamping hole (4) and the outer diameter of the clamping block (7) are mutually adapted.

4. The flame retardant electronic wire harness according to claim 3, characterized in that: The connector housing (2) has a limit plate (12) integrally formed on the circumferential inner wall thereof, and a notch formed between the limit plate (12) and the connector end (5) is adapted to fit the threaded sleeve (13) and the threaded ring (14).

5. The flame retardant electronic wire harness according to claim 4, characterized in that: The wiring harness body comprises a terminal portion and a wire portion, the wire portion comprises a core wire (17) and a shielding layer (16), and the shielding layer (16) is installed on the outer wall of the core wire (17) by covering.

6. The flame retardant electronic wire harness according to claim 5, characterized in that: The wire portion further comprises a flame retardant layer (15) sleeved on the outer wall of the shielding layer (16) and a corrosion resistant layer (9) sleeved on the outer wall of the flame retardant layer (15).

7. The flame retardant electronic wire harness according to claim 6, characterized in that: The terminal portion comprises a wire harness female end (3) and a wire harness male end (10), and the wire harness female end (3) and the wire harness male end (10) are respectively fixed to two ends of a core wire (17) by riveting.

8. The flame retardant electronic wire harness according to claim 7, characterized in that: The inner surface of the connector housing (2) is integrally formed with a semicircular clamping ring (11) adapted to the wiring harness female end (3) and the wiring harness male end (10).

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