CN218896839U

CN218896839U - Wire harness structure

Info

Publication number: CN218896839U
Application number: CN202223134657.6U
Authority: CN
Inventors: 马灯凯; 王建辉; 黄盼盼; 彭明勇
Original assignee: Huizhou Desay Battery Co Ltd
Current assignee: Huizhou Desay Battery Co Ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-04-21
Anticipated expiration: 2032-11-24

Abstract

The utility model relates to the technical field of wire harnesses, and particularly discloses a wire harness structure which comprises a wire harness assembly, a connecting piece and an injection molding piece; the wire harness assembly comprises a plurality of wires, wherein conductive sheets which are used for being matched with the wires one by one are arranged on the connecting piece, the parts, close to the first direction, of the wires are coated by the injection molding piece, and the exposed ends are welded on the conductive sheets, and the first direction is the direction of the wires facing the connecting piece; according to the wire harness structure provided by the utility model, before the plurality of wires and the conductive sheet are welded, the injection molding piece is used for coating the plurality of wires and exposing the end parts of the wires, so that the wires are effectively positioned and the wire distance between the wires is controlled, the wires are conveniently welded with the conductive sheet, the phenomena of tin connection, desoldering and the like are not easy to occur, and the welding efficiency and the yield are greatly improved.

Description

Wire harness structure

Technical Field

The utility model relates to the technical field of wire harnesses, in particular to a wire harness structure.

Background

The wire harness industry chain comprises wire and cable, connectors, processing equipment, wire harness manufacturing and downstream application industries, and the wire harness is very widely applied and can be used in the aspects of automobiles, household appliances, computers, communication equipment, various electronic instruments and meters and the like.

The existing wire harness is used with the connecting piece in a combined mode, the wire harness is welded on the connecting piece, and various different requirements are met. In practical application, it is found that when a plurality of wires on the wire harness are welded with the connecting piece respectively, the positioning requirements on each wire and the connecting piece are higher, such as poor positioning, the problems of tin connection or desoldering and the like are easily caused, and the wire harness is difficult to position by utilizing the fixture due to the small size and the small structure, so that the operation efficiency is low and the welding yield is low when the existing wire harness is welded with the connecting piece.

Disclosure of Invention

Aiming at the problems that the existing wire harness is easy to cause tin connection and desoldering and low in operation efficiency, low in welding yield and the like in welding of a connecting piece, the utility model provides a wire harness structure, before a plurality of wires and a conducting strip are welded, the injection molding piece is used for coating the wires and exposing the ends of the wires, and the wires are effectively positioned and the wire distance between the wires is controlled so as to be convenient for welding with the conducting strip, so that the phenomena of tin connection and desoldering are not easy to occur, and the welding efficiency and yield are greatly improved.

In order to solve the technical problems, the utility model provides the following specific scheme:

a wire harness structure comprising a wire harness assembly, a connecting piece and an injection molding piece;

the wire harness assembly comprises a plurality of wires, conductive sheets which are used for being matched with the wires one by one are arranged on the connecting piece, the parts, close to the first direction, of the wires are welded on the conductive sheets through exposed ends after being coated by the injection molding piece, and the first direction is the direction of the wires towards the connecting piece.

In some embodiments, the electric wire includes the surrounding layer and locates the sinle silk conductor in the surrounding layer, the tip that the surrounding layer is close to the first direction exposes in the injection molding, the tip that the sinle silk conductor is close to the first direction exposes in the surrounding layer and welds on the conducting strip, and the surrounding layer plays insulating protection effect to the sinle silk conductor, makes this wire harness structure be difficult for appearance phenomenon such as short circuit in the application, improves stability in use, and the sinle silk conductor is used for welding with the conducting strip, plays the effect of switching on.

In some embodiments, the length of the outer cladding exposed out of the end part of the injection molding part is 3-6mm, so that a good positioning effect can be achieved, meanwhile, the welding operation is convenient, and the welding efficiency and the welding yield are improved.

In some embodiments, the length of the end of the core conductor exposed to the outer cladding is 2-3mm, facilitating welding of the core conductor to the conductive sheet and achieving a stable welding effect.

In some embodiments, the plurality of wires are a first power wire, a second power wire, and a plurality of signal wires, the plurality of signal wires being arranged between the first power wire and the second power wire;

the interval between the first power line, the second power line and the adjacent signal lines is 0.8-1.2mm, and the interval between the signal lines is 0.5-0.7mm, so that bridging phenomenon can not occur between the wires, and the use stability and safety are improved.

In some embodiments, the outer cladding is provided with colors, and the colors of the outer cladding of the first power line, the second power line and the signal line are different, so that the performance of each electric wire can be conveniently distinguished and welded.

In some embodiments, the wire harness assembly further comprises an outer sheath, and a plurality of portions of the wires away from the first direction are disposed in the outer sheath to protect the wires.

In some embodiments, the end portion of the outer sheath, which is close to the first direction, is coated in the injection molding part, so that the overall strength of the wire harness assembly is improved, and phenomena such as fracture are not easy to occur.

In some embodiments, the connector is a PCB board, and the conductive sheet is a pad disposed on the PCB board, so as to facilitate different functional requirements.

In some embodiments, a positioning part for installation and positioning is formed at the edge of the PCB, so that the wire harness structure is convenient to install and position, and the operation convenience is improved.

According to the wire harness structure provided by the utility model, before the plurality of wires are welded with the conductive sheet, the injection molding piece is used for coating the plurality of wires and exposing the end parts of the wires, namely, positioning the wires, so that the wires are not easy to deviate when being welded with the conductive sheet, the wire distance between the wires is effectively controlled, the phenomena of tin connection, welding off and the like are not easy to occur when the wires are welded with the conductive sheet, and the welding efficiency and the welding yield are greatly improved.

Drawings

Fig. 1 is a schematic view of a wire harness structure provided in an embodiment of the present utility model;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a schematic connection diagram of a wire harness structure and a battery cell according to an embodiment of the present utility model;

fig. 4 is a schematic connection diagram of a wire harness structure, a battery core and a mounting bracket provided in an embodiment of the present utility model;

wherein, 1-wire harness assembly; 11-wires; 111-outer cladding; 112-a core conductor; 12-an outer sheath; a 2-connector; 21-a positioning part; 3-injection molding; 4-conductive sheets; 5-an electric core; 6-mounting brackets.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The described embodiments are some, but not all, embodiments of the utility model.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

For example, a wire harness structure includes a wire harness assembly, a connector, and an injection molded piece; the wire harness assembly comprises a plurality of wires, conductive sheets which are used for being matched with the wires one by one are arranged on the connecting piece, the parts, close to the first direction, of the wires are welded on the conductive sheets through exposed ends after being coated by the injection molding piece, and the first direction is the direction of the wires towards the connecting piece.

According to the wire harness structure, before a plurality of wires are welded with the conducting strips, the injection molding piece is used for coating the wires and exposing the ends of the wires, namely, positioning is carried out on each wire, when the wires are welded with the conducting strips, deflection is not easy to occur, the wire spacing between the wires is effectively controlled, when the wires are welded with the conducting strips, the phenomena of tin connection, welding off-welding and the like are not easy to occur, and the welding efficiency and the welding yield are greatly improved.

Embodiment one:

as shown in fig. 1 and 2, a wire harness structure includes a wire harness assembly 1, a connecting member 2, and an injection molding member 3, the wire harness assembly 1 being for welding conduction with the connecting member 2, the injection molding member 3 being for injection molding cladding on the wire harness assembly 1, positioning a welding portion of the wire harness assembly 1 so as to perform a welding operation of the wire harness assembly 1 with the connecting member 2.

The wire harness assembly 1 includes a plurality of wires 11, where the plurality of wires 11 may be power lines, signal lines, etc. for realizing a complete line function, and the performance and the number of the wires 11 are not particularly limited in this example, and may be specifically adjusted according to actual needs. The connecting piece 2 is provided with conductive sheets 4 which are matched with a plurality of electric wires 11 one by one, and the exposed end parts of the electric wires 11, which are close to the first direction, are welded on the conductive sheets 4 after being coated by the injection molding piece 3, wherein the first direction is the direction of the electric wires 11 facing the connecting piece 2.

Referring to fig. 1, the first direction is the direction of the electric wires 11 facing the connecting piece, that is, when each electric wire 11 is welded to the conductive sheet 4, one end of each electric wire 11 close to the conductive sheet 4 is the first direction, and the part of each electric wire 11 close to the first direction is covered by the injection molding piece 3, that is, before each electric wire 11 is welded to the conductive sheet 4, each electric wire 11 is arranged according to the welding position, the injection molding piece 3 is molded integrally outside each electric wire 11, and the welding position of each electric wire 11 is positioned through the injection molding piece 3, so that the end part exposed out of the injection molding piece 3 is convenient to weld on the conductive sheet 4, during welding, each electric wire 11 cannot shift, and phenomena such as tin connection and desoldering are not easy to occur, thereby improving the welding efficiency and the welding yield.

It should be noted that, the injection molding part 3 may be a polyamide hot melt adhesive, which is formed by high temperature condensation reaction of dimer acid and polyamine, and has the characteristics of excellent heat resistance, cold resistance, electrical property, oil resistance, chemical resistance, medium resistance, no smell, no color and fast solidification.

Embodiment two:

the electric wire 11 comprises an outer cladding 111 and a wire core conductor 112 arranged in the outer cladding 111, wherein the end part of the outer cladding 111 close to the first direction is exposed out of the injection molding part 3, the end part of the wire core conductor 112 close to the first direction is exposed out of the outer cladding 111 and welded on the conducting strip 4, the outer cladding 111 plays an insulating protection role on the wire core conductor 112, the wire harness structure is not easy to have short circuit and other phenomena in the application process, the service stability is improved, and the wire core conductor 112 is used for being welded with the conducting strip 4 to play a conducting role.

Because the wire harness structure can be applied to automobiles, household appliances, computers, communication equipment, various electronic instruments and meters and the like, the use environment is complex, and materials with insulating and protecting properties can be adopted for the outer cladding 111 so as to perform insulating and protecting functions on the wire core conductor 112, avoid phenomena such as short circuit and the like caused by contact of the wire core conductor 112 with external electrical devices and the like, and improve the use safety of the wire harness structure.

The end of the outer cladding 111 close to the first direction is exposed out of the injection molding piece 3, and the end of the core conductor 112 close to the first direction is exposed out of the outer cladding 111, that is, the end of the core conductor 112 close to the first direction is also exposed out of the injection molding piece 3, so that the core conductor 112 and the conductive sheet 4 are in welding conduction.

In some embodiments, the length of the outer cladding 111 exposed at the end of the injection molding part 3 is 3-6mm, so that a better positioning effect can be achieved, meanwhile, the welding operation is convenient, and the welding efficiency and the welding yield are improved. For example, in one example, the length of the outer envelope 111 exposed at the end of the injection molding 3 is 4mm, which on the one hand does not cause disadvantages for positioning due to excessive length and on the other hand does not cause disadvantages for welding due to excessive short length.

In some embodiments, the length of the end of the core conductor 112 exposed to the outer cladding 111 is 2-3mm, facilitating the welding of the core conductor 112 to the conductive sheet 4 and achieving a stable welding effect. For example, in one example, the length of the end of the core conductor 112 exposed to the outer cladding 111 is 2.5mm, which is not too long to cause easy tin connection, on the one hand, and is not too short to cause a desoldering phenomenon, on the other hand.

Embodiment III:

in some embodiments, the electric wire 11 is a first power supply line, a second power supply line, and a plurality of signal lines, the plurality of signal lines being arranged between the first power supply line and the second power supply line; the interval between the first power line, the second power line and the adjacent signal lines is 0.8-1.2mm, the interval between the signal lines is 0.5-0.7mm, the electric wires are ensured not to have bridging phenomenon, and the use stability and safety are improved.

Specifically, the first power line may be an anode power line or a fire wire power line, etc., the second power line may be a cathode power line or a zero wire power line, etc., and the plurality of signal lines are used for transmitting sensing information to control information in the electrical control circuit, so as to realize complete control function.

Since the current flowing through the power lines is large, correspondingly, when the current density is determined, the sectional area of the line must be proportional to the passing current, the line width of the power lines is large, and in order to ensure that the space between adjacent wires must be able to meet the electrical safety requirements, and in order to facilitate operation and production, the minimum space must be able to be suitable for the voltage to be born, which generally includes the operating voltage, the additional fluctuating voltage and the peak voltage caused by other reasons, in combination with the actual application scene requirements of the wire harness structure, the space between the first power line and the adjacent signal line is set to 1.0mm, the space between the second power line and the adjacent signal line is set to 1.0mm, and the space between the signal lines is set to 0.6mm. In this example, the harness structure is used in a host device with a battery, the number of signal lines being four, PRES, PRS, DAT and CLK lines respectively, where PRES corresponds to sys_pres, at the host side the signal is given to the battery internal PRES pin, from which the battery will determine if the system is accessed, PRS corresponds to bat_pres, at the battery internal ground, from which the host side determines if the battery is accessed, DAT is used for data transmission, CLK is the timing line. Of course, the specific number of signal lines and the corresponding performance are not limited in this example, and may be specifically adjusted according to actual requirements to meet the application scenarios that are not used.

In this example, the outer cladding 111 is provided with a color, and the colors of the outer cladding 111 of the first power line, the second power line and the signal line are different, so that the performance of each electric wire can be conveniently distinguished and used for welding. The outer cladding of each wire is provided with different colors to distinguish, so that the welding is not easy to be confused and the phenomenon of misconnection is avoided.

Embodiment four:

in some embodiments, the wire harness assembly 1 further includes an outer sheath 12, and a portion of the plurality of wires 11 remote from the first direction is disposed within the outer sheath 12 to protect the respective wires.

Because the wire harness structure can be applied to automobiles, household appliances, computers, communication equipment, various electronic instruments and meters and the like, the use environment is complex, and materials with insulating, fireproof and other protective properties can be adopted for the outer sheath 12, so that the wire harness structure can protect various wires and the use safety of the wire harness structure is improved.

Referring to fig. 1, a portion of a plurality of electric wires 11, which is far from a first direction, is disposed in an outer sheath 12, and an end portion thereof is exposed from the outer sheath 12 and connected with a connector, realizing a both-end conduction function of the wire harness structure.

In order to improve the overall strength of the wire harness assembly 1, breakage and the like are not easy to occur, and the end portion, close to the first direction, of the outer jacket 12 is coated in the injection molding 3.

Wherein, connecting piece 2 is the PCB board, and conducting strip 4 is the pad of setting on the PCB board, is convenient for realize different functional demands.

Referring to fig. 1, a positioning part 21 for mounting and positioning is formed at an edge of a pcb board, so that the wire harness structure is conveniently mounted and positioned, and the operation convenience is improved.

The positioning portion 21 may protrude from the edge of the PCB, or may be recessed into the edge of the PCB, for positioning connection with the mounting bracket.

As shown in fig. 3 and 4, when the wire harness assembly 1 is welded with a PCB, each electric core 5 is welded on the PCB in a butt joint manner, then the electric core 5 and the wire harness structure are installed and positioned on the mounting bracket 6 together through the positioning part 21 on the PCB, the electric core 5 and the wire harness structure are supported by the mounting bracket 6, and certain heat is generated during operation of the electric core, so that a good heat dissipation effect is achieved, the use safety is improved, the mounting bracket is in a hollowed-out design, a supporting edge is arranged at the edge of the mounting bracket, and the middle part of the mounting bracket is in a hollowed-out state.

In summary, according to the wire harness structure provided by the utility model, before welding the plurality of wires and the conductive sheet, the injection molding piece is used for coating the plurality of wires and exposing the end parts of the wires, namely, positioning the wires, so that the wires are not easy to deviate when being welded with the conductive sheet, the wire distance between the wires is effectively controlled, the phenomena of tin connection, desoldering and the like are not easy to occur when the wires are welded with the conductive sheet, and the welding efficiency and the welding yield are greatly improved.

In the description of the present utility model, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

Claims

1. A wire harness structure characterized by comprising a wire harness assembly (1), a connecting piece (2) and an injection molding piece (3);

the wire harness assembly (1) comprises a plurality of wires (11), conductive sheets (4) which are used for being matched with the wires (11) one by one are arranged on the connecting piece (2), the parts, close to the first direction, of the wires (11) are welded on the conductive sheets (4) through exposed ends after being coated by the injection molding piece (3), and the first direction is the direction of the wires (11) towards the connecting piece (2).

2. Wire harness structure according to claim 1, characterized in that the wire (11) comprises an outer covering (111) and a core conductor (112) arranged in the outer covering (111), the end of the outer covering (111) close to the first direction being exposed from the injection-molded part (3), the end of the core conductor (112) close to the first direction being exposed from the outer covering (111) and being soldered to the conductive sheet (4).

3. Wire harness structure according to claim 2, characterized in that the length of the outer envelope (111) exposed at the end of the injection-molded part (3) is 3-6mm.

4. Wire harness structure according to claim 2, characterized in that the length of the end of the wire core conductor (112) exposed to the outer cladding (111) is 2-3mm.

5. The wire harness structure according to claim 2, wherein the plurality of electric wires (11) are a first power supply line, a second power supply line, and a plurality of signal lines, the plurality of signal lines being arranged between the first power supply line and the second power supply line;

the interval between the first power line, the second power line and the adjacent signal line is 0.8-1.2mm, and the interval between the signal line and the signal line is 0.5-0.7mm.

6. The wire harness structure according to claim 5, wherein the outer cover (111) is provided with a color, and the outer covers (111) of the first power supply line, the second power supply line, and the signal line are different in color.

7. The wire harness structure according to claim 1, wherein the wire harness assembly (1) further includes an outer sheath (12), and a portion of the plurality of electric wires (11) away from the first direction is disposed within the outer sheath (12).

8. Wire harness structure according to claim 7, characterized in that the end of the outer jacket (12) near the first direction is clad in an injection-molded part (3).

9. The wire harness structure according to any one of claims 1 to 8, wherein the connector (2) is a PCB board, and the conductive sheet (4) is a pad provided on the PCB board.

10. The wire harness structure according to claim 9, wherein a positioning portion (21) for mounting and positioning is formed at an edge of the PCB board.