CN214013199U - Wire harness - Google Patents

Abstract

The utility model provides a wire harness belongs to pencil processing technology field. It has solved current pencil and can't realize lightweight problem when guaranteeing stable connection. The wire clamp comprises two large-diameter wires and a small-diameter wire, wherein the end parts of the large-diameter wires are connected with wiring terminals, two ends of the small-diameter wire are respectively folded and inserted into wiring holes of the wiring terminals of the two large-diameter wires, and the wire diameter of the small-diameter wire is smaller than that of the large-diameter wire. The light weight of the wire harness can be realized through the matching of the large-diameter wire and the small-diameter wire, and the wires are stably connected.

Description

Wire harness

Technical Field

The utility model belongs to the technical field of the pencil processing, a pencil is related to.

Background

The wire harness refers to a component for forming a connecting circuit by pressing and pressing an insulator or adding a metal shell outside after a contact terminal (connector) punched by a copper material is pressed and connected with a lead cable, and the wire harness is a very common electronic device and is commonly used in automobiles. The wire in the wire harness is usually a complete wire, and the wire diameter specification is 0.35mm, 0.5mm, 0.75mm and the like. With the widespread application of electronic control technology, more and more electrical parts and wires are used, and the thicker and heavier the wire harness becomes. In the automobile, the wire harness is connected with the whole automobile body, the wiring is more and the position is staggered and complicated, but the wiring space is limited, and the weight of the whole wire harness is heavier.

A wire having a diameter of a single wire of less than 0.35mm is gradually developed, and the weight is reduced by reducing the diameter of the wire, but the components such as a terminal, a sheath, etc. for wire connection in the existing market are still suitable for the wire having a diameter of 0.35mm or more, so that it is necessary to develop a component suitable for the size of less than 0.35mm, but the development and production of the component require time and money.

In order to realize the application of the small-diameter wire, a person skilled in the art easily thinks that the small-diameter wire is connected with the large-diameter wire by using a wire splicing process in the prior art, such as a welding method, a screw fastening method and the like, but the application of the method on the small-diameter wire has certain limitation because the small-diameter wire is small in diameter, easy to have the phenomena of wire dropping, short circuit and the like, and unstable in connection.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a pencil, the utility model aims to solve the technical problem that: the light weight of the existing wire harness can not be realized while stable connection is guaranteed.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a wire harness, includes the major diameter wire, its characterized in that, the major diameter wire has two, and the end connection of major diameter wire has binding post, the pencil still includes the path wire, peg graft in the binding post's of two major diameter wires binding post wiring hole after folding respectively at the both ends of path wire, the line diameter of path wire is less than the line diameter of major diameter wire.

The small-diameter lead wire in the wire harness can be a small-diameter lead wire with the diameter less than 0.35mm, and is applied to the environment meeting the passing current of the small-diameter lead wire. The harness is connected with a whole complete lead by two large-diameter leads and a small-diameter lead to form a complete lead, namely, a section in the middle of the original large-diameter lead is replaced by the small-diameter lead, the diameter of the small-diameter lead is smaller than that of the large-diameter lead under the condition of consistent lead length, the weight of the small-diameter lead is certainly smaller than that of the large-diameter lead, the weight of the whole harness can be reduced, the light weight is realized, the connection between the small-diameter lead and a connecting terminal is realized by the large-diameter lead, one end of the large-diameter lead can be directly connected with the existing connecting terminal, namely, each component does not need to be re-developed on the basis of the existing component, and the good applicability of the harness is ensured; simultaneously, the end parts of the two ends of the small-diameter wire are folded respectively and then are inserted into the wiring holes of the wiring terminals, so that the cross-sectional area of the small-diameter wire can be increased, the inner side wall of the wiring hole is ensured to be in full contact with the small-diameter wire, stable connection is realized, and the occupied space of the small-diameter wire can be effectively reduced in the wiring harness arranging and distributing process.

In the wire harness, the small-diameter wire is provided with an insertion part bent into at least a double-layer structure, and the insertion part can extend into the wiring hole and is tightly matched with the wiring hole. The bilayer structure of grafting portion can satisfy the required line footpath of wiring hole, realizes the tight fit with binding post, guarantees the stability of connecting, and binding post and grafting portion crimping completion back keep great contact surface between wiring hole inside wall and the grafting portion, guarantee current-carrying performance, the electrical property of path wire, guarantee the stable connection to simple structure, convenient operation.

In the wiring harness, one end of the large-diameter wire, which is connected with the wiring terminal, is a connecting end, and the connecting end is electrically connected with the insertion part after extending into the wiring hole. The connecting part and the inserting part are connected through the wiring terminal, and the stability of connection between the inserting part and the connecting part is guaranteed.

In the above-mentioned wire harness, the length of the small-diameter wire is greater than the length of the large-diameter wire. The design reduces the weight of the wire harness as much as possible, realizes light weight and can ensure the economy of the wire harness; when this pencil electric current circulation, can produce certain undulant in binding post department, set up the distance of extension electric current at two undulant positions through the length of path wire, improve the stability that this pencil used.

In the above-mentioned wire harness, the length of the large-diameter wire is less than 300 mm. By limiting the length of the large-diameter wire, the light weight and the economy of the wire harness are realized as much as possible.

In the above-mentioned wiring harness, the connection terminal may be a U-shaped terminal, a G-shaped terminal, or an O-shaped terminal. The structure of the wiring terminal is current, the wiring harness can be integrally connected with the existing component, and the practicability is high.

In the above-mentioned wire harness, the length of the large-diameter wire is greater than 50 mm. The both ends of big footpath wire need be connected with the terminal respectively, and big footpath wire also has the effect of transmission current, through the length design of big footpath wire, not only guarantee the stability that big footpath wire is connected and with the mechanical properties of being connected between the path wire, give the length of electric current buffering moreover, prevent that the electric current from directly getting into the path wire from big footpath wire after exporting in follow controller or other electrical apparatus, cause the electric current fluctuation, influence the stability of electric current, the security of pencil.

Compared with the prior art, the wire harness has the following advantages: the small-diameter lead wire is connected between the two large-diameter lead wires to form the actually required length of the wire harness, the small-diameter lead wire can reduce the weight of the whole wire harness and realize light weight, the small-diameter lead wire in the wire harness is connected with the terminal and the protective cover through the large-diameter lead wire, the small-diameter lead wire does not need the terminal and the protective cover which are specially adapted, the subsequent development cost and time are reduced, and the economy is realized; meanwhile, the end part of the small-diameter wire is connected with the wiring terminal after being folded, so that the connection stability between the small-diameter wire and the wiring terminal is ensured.

Drawings

Fig. 1 is a perspective view of the present wire harness.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is a schematic view of the connection of a large diameter wire and a small diameter wire.

FIG. 4 is a schematic view of a small diameter wire.

In the figure, 1, a large-diameter wire; 1a, a connecting end; 2. a small diameter wire; 2a, a plug part; 3. a wiring terminal; 3a, wiring holes; 4. a sheath.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2, 3 and 4, the wire harness includes two large-diameter wires 1 and a small-diameter wire 2 arranged between the two large-diameter wires 1, the large-diameter wire 1 and the small-diameter wire 2 are connected through a wiring terminal 3, the small-diameter wire 2 is provided with a plugging portion 2a which is bent to form two layers stacked up and down, the plugging portion 2a can extend into a wiring hole of the wiring terminal 3, one end of the large-diameter wire 1 also extends into the wiring hole 3a to be electrically connected with the plugging portion 2a, the wiring terminal 3 can be tightly connected with the plugging portion 2a and a connecting end 1a, the wiring terminal 3 in this embodiment is a U-shaped terminal, and the conventional U-shaped terminal is provided with wiring holes for connecting wires.

As shown in fig. 1, in order to ensure the economical efficiency and realize the light weight of the wire harness, the length of the small-diameter wire 2 is greater than that of the large-diameter wire 1, the length of the large-diameter wire 1 is less than or equal to 300mm, preferably 300mm in the embodiment, and the length of the large-diameter wire 1 is greater than 50mm, so that the current flow instability caused by the over-short of the large-diameter wire 1 is avoided, and the length between the two large-diameter wires 1 and the small-diameter wire 2 is greater than 2 m.

The small-diameter lead 2 aimed by the wire harness is a lead with the diameter smaller than 0.35mm, the large-diameter lead 1 is a lead with the diameter larger than 0.35mm, leads with the specification of more than 0.35 already have corresponding terminals and sheaths 4 in practical application, and leads with the specification of less than 0.35 do not have matched terminals and sheaths 4 in practical application. In the embodiment, a small-diameter wire 2 of 0.22 specification and a wire of 0.5 specification are taken as examples, when the wire harness is used, a metal part of one end of the small-diameter wire 2, which is subjected to rubber removal, is folded once to form an upper layer of insertion part 2a and a lower layer of insertion part 2a, the insertion part 2a extends into a wiring hole of a wiring terminal 3, one end of the large-diameter wire 1 is a connecting end 1A, the metal part extends into the wiring terminal 3 and is connected with the insertion part 2a after the rubber removal, the insertion part 2a and the connecting end 1A are firmly connected by pressing the wiring terminal 3 with a tool, the other end of the large-diameter wire 1, which is opposite to the connecting end 1A, is connected with a sheath 4 through a terminal, and considering that the resistance of the 0.22 wire and the breaking and ageing of the wire, the wire harness is applied to an environment with the current of an electrical appliance being less than 1A.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms large diameter wire, small diameter wire, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (7)

1. The utility model provides a wire harness, includes big footpath wire (1), its characterized in that, big footpath wire (1) has two, and the end connection of big footpath wire (1) has binding post (3), the wire harness still includes path wire (2), peg graft in wiring hole (3a) of binding post (3) of two big footpaths wire (1) after folding respectively at the both ends of path wire (2), just big footpath wire (1) is connected with path wire (2) electricity, the line footpath of path wire (2) is less than the line footpath of big footpath wire (1).

2. A wire harness according to claim 1, wherein the small-diameter wire (2) has a fitting portion (2a) bent into at least a double-layer structure, the fitting portion (2a) being capable of protruding into the wiring hole (3a) and fitting with the wiring hole (3a) in a tight manner.

3. A wire harness according to claim 2, wherein the end of the large-diameter wire (1) to which the terminal (3) is connected is a connection end (1a), and the connection end (1a) is electrically connected to the insertion portion (2a) after being inserted into the connection hole (3 a).

4. A wire harness according to claim 1 or 2, wherein the small-diameter wire (2) has a length larger than that of the large-diameter wire (1).

5. A wire harness according to claim 1 or 2, wherein the length of the large diameter wire (1) is 300mm or less.

6. A wire harness according to claim 1 or 2, characterized in that the connection terminal (3) is a U-terminal or a G-terminal or an O-terminal.

7. A wire harness according to claim 1 or 2, wherein the length of the large diameter conductor (1) is greater than 50 mm.

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