CN116547193A

CN116547193A - Wire harness perforation limiting protection device for vehicle

Info

Publication number: CN116547193A
Application number: CN202080107059.4A
Authority: CN
Inventors: 白彩江; 张秋博; 田一申; 李小江
Original assignee: Zhejiang Geely Holding Group Co Ltd; Geely Automobile Research Institute Ningbo Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Geely Automobile Research Institute Ningbo Co Ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2023-08-04
Also published as: WO2022116102A1

Abstract

A wire harness perforation limit protection device for a vehicle relates to the technical field of vehicle wire harness installation, and comprises a sleeve (30) and a plug body (40), wherein the sleeve (30) can be matched with a sheet metal hole (11) of a vehicle body in a clamping way, an inner cavity (31) is arranged in the sleeve (30), the caliber of a first end of the inner cavity (31) is larger than that of a second end of the inner cavity, the plug body (40) is fixedly connected with at least part of a wire harness wire sheath (60), and the maximum value of the diameter of the plug body (40) is smaller than that of the first end of the inner cavity (31) and larger than that of the second end of the inner cavity (31). On the basis of meeting the wear-resistant protection of the wire harness, the wire harness assembling device can be accurately limited, the wire harness is prevented from being separated from a circuit, the flexible adjustment of the surplus length of the wire harness is facilitated, and the assembling convenience is improved.

Description

Wire harness perforation limiting protection device for vehicle

Technical Field

The invention relates to the technical field of vehicle wire harness installation, in particular to a wire harness perforation limiting and protecting device for a vehicle.

Background

In the current vehicle circuit board mounting technology, NFC (Near Field Communication ) is arranged on the outer side of a B column, NFC is required to be welded on an outer decorative plate of the B column, then the outer decorative plate and NFC assembly are mounted on the B column, and a wire harness connected with NFC is required to penetrate through the B column to enter a vehicle and is converged into a vehicle body wire harness. Due to the limitation of the vehicle body structure, a hole is formed in the three layers of metal plates of the B column, the wire harness passes through the three layers of metal plates and then descends along the cavity of the B column, and a bus is connected to the lower part of the B column in the vehicle.

The trompil adopts laser cutting trompil generally on the panel beating of B post, and the edge of trompil is comparatively sharp, probably cuts the damage pencil, in order to prevent the pencil damage, has bellows or gum cover to carry out the abrasionproof in the pencil overcoat at present generally. However, both of these schemes have drawbacks: the corrugated pipe is sleeved, and the corrugated pipe and the opening hole on the metal plate cannot be fixed, so that the corrugated pipe and the opening hole have relative movement, the durability can be influenced, and the abnormal sound risk exists; the mode of cover gum cover is being connected the pencil to the in-process that NFC installed on the panel beating, and the pencil needs to have the allowance of certain activity, but because the clearance between NFC circuit board and the gum cover is very little, can't hold redundant pencil, the pencil is difficult to taut. Moreover, in both schemes, the wire harness cannot be effectively limited, and when the wire harness is excessively pulled, soldering tin connected with the NFC circuit board may fall off, so that NFC cannot work.

Therefore, how to meet the requirements of wear-resistant and anti-drop protection and easy installation of the wire harness is an important technical problem that needs to be solved currently by those skilled in the art.

Disclosure of Invention

The invention aims to provide a wire harness perforation limit protection device for a vehicle, which can accurately limit a wire harness assembly position on the basis of meeting the abrasion-proof protection of the wire harness, prevents the wire harness from being separated from a circuit, is beneficial to flexibly adjusting the surplus length of the wire harness and improves the assembly convenience.

In order to achieve the above object, the present invention provides a wire harness piercing limiter protection device for a vehicle, comprising:

the sleeve can be in clamping fit with a sheet metal hole of a vehicle body, an inner cavity is formed in the sleeve, and the caliber of a first end of the inner cavity is larger than that of a second end of the inner cavity;

the plug body is fixedly connected with at least part of the wire harness wire skin, and the maximum value of the diameter of the plug body is smaller than the caliber of the first end of the inner cavity and larger than the caliber of the second end of the inner cavity.

As the preferable scheme, telescopic one end is connected with the ring flange, the ring flange is close to telescopic first side can support with the outside surface in panel beating hole, be equipped with on the first side of ring flange be used for with the buckle structure of panel beating hole joint.

Preferably, the fastening structure comprises a base body connected between the sleeve and the flange plate and a plurality of fastening pieces arranged on the base body along the circumferential direction of the flange plate;

each buckle piece comprises a clamping part which is connected to the edge of the base body and extends along the radial direction, the clamping part of each buckle piece is matched with the first side face of the flange plate to form a groove position, and the metal plate of the vehicle body can be clamped in the groove position through the metal plate hole.

Preferably, the sleeve, the flange plate and the fastening structure are integrally formed.

As a preferred scheme, each fastener further comprises an operation part, the operation part is connected to the clamping part and extends away from the first side surface of the flange plate, and the operation part is subjected to radial inward force to enable the distance between the clamping part and the first side surface of the flange plate to be increased, so that the fastening structure is separated from the sheet metal hole site.

Preferably, an inclined plane is provided on the outer side surface of the operation part, and the inclined plane is disposed obliquely toward the sleeve.

Preferably, the bore of the inner cavity of the sleeve gradually decreases from the first end to the second end.

Preferably, the plug body is in a truncated cone shape.

Preferably, the plug body is integrally formed at one end of the wire sheath of the wire harness.

As a preferable scheme, the plug body adopts a rubber plug.

Compared with the prior art, the invention has the beneficial effects that:

the wire harness perforation limit protection device for the vehicle is provided with the sleeve and the plug body, wherein the sleeve can be in clamping fit with a sheet metal hole of the vehicle body, an inner cavity is formed in the sleeve, the caliber of a first end of the inner cavity is larger than that of a second end of the inner cavity, the plug body is fixedly connected with at least part of a wire harness wire skin, the maximum value of the diameter of the plug body is smaller than that of the first end of the inner cavity and larger than that of the second end of the inner cavity, namely the plug body can be inserted into the first end of the inner cavity and cannot slide out of the second end of the inner cavity. Like this, when using, stretch into telescopic first end with cock body and pencil to stretch out the pencil from the second end of inner chamber, be connected the pencil and the NFC assembly of one side near the first end of inner chamber, the pencil of one side near the first end of inner chamber this moment can freely draw, adjusts to enough length in order to install, promotes the convenience and the efficiency of installation. Then connect the sleeve card to the panel beating hole on, draw the pencil from the one side that is close to the second end of inner chamber again, with the extra long of pencil that is close to one side of the first end of inner chamber tighten up, this in-process and pencil fixed connection's cock body is moved from the first end to the second end of inner chamber, because the diameter of cock body biggest department is greater than the bore of the second end of inner chamber, consequently, the cock body can receive the extrusion obstruction of the perisporium of inner chamber in the motion process, make the cock body finally chucking in a certain position between the first end of inner chamber and second end, thereby realize the one-way spacing of pencil, this position can make the pencil between cock body and the NFC assembly just have not redundancy, can make full use of pencil. After the plug body and the inner cavity are clamped, even if external force is used for pulling the wire harness, the external force can be converted into the interaction force of the plug body and the inner cavity, and the interaction force can not be transmitted to the joint of the wire harness and the NFC assembly, so that the risk of welding off caused by excessive pulling is prevented, the design that the plug connector is not added newly is realized, and the production cost is reduced. Meanwhile, as the wire harness passes through the inner cavity inside the sleeve, the wire harness cannot contact the metal plate hole, and the problem that the sharp edge of the metal plate hole cuts and damages the wire harness is avoided. And this a spacing protection device mounting structure for pencil perforation is simple, through adjusting sleeve size, can satisfy the pencil protection and the spacing requirement of different motorcycle types different positions.

Drawings

Fig. 1 is a schematic structural view of a sheet metal of a vehicle body provided by an embodiment of the invention;

fig. 2 is a schematic structural diagram of a harness perforation limit protection device and an NFC assembly for a vehicle according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a plug body and a wire sheath of a wire harness according to an embodiment of the present invention;

fig. 4 is a schematic view of the state of the plug body and the sleeve before the NFC assembly is installed;

fig. 5 is a schematic perspective view of a sleeve and a buckle structure according to an embodiment of the present invention;

FIG. 6 is a schematic view of a partial structure of the wire harness perforation limit protector of the present invention after being mounted to a vehicle body sheet metal;

fig. 7 is a cross-sectional view taken along A-A in fig. 6.

10, a car body sheet metal; 11. a sheet metal hole; 20. an NFC assembly; 30. a sleeve; 31. an inner cavity; 32. a flange plate; 321. a first side; 322. a groove position; 40. a plug body; 50. a buckle structure; 51. a base; 52. a clip; 521. a clamping part; 522. an operation unit; 523. an inclined plane; 60. wire harness wire sheath.

Detailed Description

The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1, 2 and 3, the harness perforation limit protector for a vehicle of the present invention is schematically shown, which includes a sleeve 30 and a plug body 40. The sleeve 30 may be in snap fit with the sheet metal hole 11 on the B column of the vehicle body, an inner cavity 31 is provided in the sleeve 30, and the caliber of a first end of the inner cavity 31 is greater than that of a second end of the inner cavity (see fig. 7, the first end of the inner cavity 31 is a left end in the drawing, and the second end is a right end in the drawing). The plug body 40 is fixedly connected with at least part of the harness wire sheath 60, so that the harness cannot move freely when the position of the plug body 40 is fixed. The maximum diameter of the plug body 40 is smaller than the bore of the first end of the lumen 31 and larger than the bore of the second end of the lumen 31, i.e. the plug body 40 can be inserted from the first end of the lumen 31 without sliding out from the second end of the lumen 31.

According to the wire harness perforation limit protection device for the vehicle based on the technical characteristics, as shown in fig. 3, 4 and 6, the plug body 40 and the wire harness extend from the first end of the inner cavity 31 of the sleeve 30, the wire harness extends from the second end of the inner cavity 31, the wire harness close to one side of the first end of the inner cavity 31 is connected with the NFC assembly 20, and at the moment, the wire harness close to one side of the first end of the inner cavity 31 can be freely pulled, so that the wire harness can be adjusted to be long enough for installation, and the convenience and the efficiency of installation are improved. Then, the sleeve 30 is clamped onto the sheet metal hole 11, and the wire harness is pulled from the side close to the second end of the inner cavity 31, so that the wire harness surplus length of the side close to the first end of the inner cavity 31 is tightened, in the process, the plug body 40 fixedly connected with the wire harness moves from the first end to the second end of the inner cavity 31, and the diameter of the plug body 40 is larger than the caliber of the second end of the inner cavity 31, so that the plug body 40 is blocked by extrusion of the peripheral wall of the inner cavity 31 in the moving process, the plug body 40 is finally clamped at a certain position (shown in fig. 7) between the first end and the second end of the inner cavity 31, unidirectional limiting of the wire harness is achieved, and the wire harness between the plug body 40 and the NFC assembly 20 is just free of redundancy, so that the wire harness can be fully utilized. After the plug body 40 and the inner cavity 31 are clamped, even if external force is used for pulling the wire harness, the external force can be converted into interaction force between the plug body 40 and the inner cavity 31, and the interaction force can not be transmitted to the joint of the wire harness and the NFC assembly 20, so that the risk of welding off caused by excessive pulling is prevented, the design that the wire harness can be prevented from falling off without adding a plug connector is realized, and the production cost is reduced. Meanwhile, as the wire harness passes through the inner cavity 31 inside the sleeve 30, the wire harness cannot contact the metal plate hole 11, and the problem that the sharp edge of the metal plate hole 11 cuts and damages the wire harness is avoided. And this a spacing protection device mounting structure for pencil perforation is simple, through adjusting sleeve 30 size, can satisfy the pencil protection and the spacing demand of different motorcycle types different positions.

Specifically, in this embodiment, as shown in fig. 5 and 7, one end of the sleeve 30 is connected with a flange plate 32, a first side 321 of the flange plate 32, which is close to the sleeve 30, may abut against the surface of the outer side of the sheet metal hole 11, and a second side of the flange plate 32, which is far away from the other side of the sleeve 30, is provided with a fastening structure 50 for fastening with the sheet metal hole 11, when the sleeve 30 is mounted on the sheet metal hole 11, the first side 321 of the flange plate 32 abuts against the surface of the vehicle body sheet metal 10 outside the sheet metal hole 11, and at least a portion of the fastening structure 50 abuts against the surface of the vehicle body sheet metal 10 inside the sheet metal hole 11, so that the sleeve 30 is firmly connected to the sheet metal hole 11, thereby avoiding affecting durability or abnormal sound. When the sleeve is required to be disassembled, the buckling structure 50 is loosened, the sleeve 30 can be disassembled from the sheet metal hole 11, and the operation is simple and convenient.

In a more specific embodiment, the fastening structure 50 includes a base 51 and a plurality of fastening members 52, where the base 51 is connected between the sleeve 30 and the flange 32, and the number of fastening members 52 is greater than two (for example, 6 fastening members may be provided), and the plurality of fastening members 52 are disposed on the base 51 along the circumferential direction of the flange 32, and preferably, each fastening member 52 is disposed uniformly circumferentially on the base 51. Further, each fastener 52 includes a clamping portion 521, where the clamping portion 521 is connected to an edge of the base 51 and extends in a radial direction, and the clamping portion 521 of each fastener 52 cooperates with the first side 321 of the flange 32 to form a groove 322, so that an edge of the sheet metal hole 11 can be clamped into the groove 322 during installation, so as to realize clamping cooperation between the sleeve 30 and the sheet metal hole 11.

Further, each fastener 52 further includes an operation portion 522, where the operation portion 522 is connected to the clamping portion 521 and extends away from the first side 321 of the flange 32, when a radial inward force is applied to the operation portion 522, the operation portion 522 approaches the base 51, drives the clamping portion 521 connected to the operation portion 522 to turn over, the space between the clamping portion 521 and the first side 321 of the flange 32 becomes larger, and the edge of the clamping portion 521 is retracted to a position flush with the base 51, so that the groove 322 is not formed any more, and the limit on the edge of the sheet metal hole 11 is released, so that the fastening structure 50 and the sleeve 30 can be separated from the sheet metal hole 11. The outer side surface of the operating portion 522 is provided with a slope 523, and the slope 523 is provided obliquely toward the sleeve 30 so as to apply a radially inward force to the operating portion 522.

Preferably, the sleeve 30, the flange 32 and the fastening structure 50 are integrally formed, so as to reduce the number of separate parts and improve the integration of the device.

As a preferred embodiment, as shown in fig. 7, the bore of the inner cavity 31 of the sleeve 30 is gradually reduced from the first end to the second end, that is, the inner cavity 31 is formed in a truncated cone shape, and the longitudinal section of the inner cavity is in a trapezoid shape, the lower bottom of the trapezoid is at the first end of the inner cavity 31, and the upper bottom is at the second end of the inner cavity 31. Preferably, the plug body 40 is a truncated cone, the cross section of the plug body is also trapezoid, the length of the long bottom edge of the cross section is smaller than the lower bottom of the cross section of the inner cavity 31 and larger than the upper bottom of the cross section of the inner cavity 31, so that the plug body 40 can be integrally inserted from the first end of the inner cavity 31, the peripheral wall of the plug body 40 contacts the peripheral wall of the inner cavity 31 after the plug body is inserted to a certain depth, the plug body 40 is subjected to resistance and cannot continuously move towards the second end of the inner cavity 31, and only the plug body is allowed to withdraw from the first end of the inner cavity 31, so that unidirectional limiting of the plug body 40 is realized.

Further preferably, the plug body 40 is integrally formed at one end of the wire harness sheath 60, so as to reduce the number of independent accessories and improve the assembly efficiency. Under the condition of realizing unidirectional limiting of the plug body 40, unidirectional limiting of the harness wire skin 60 is also realized, and the problem that the harness is separated from the NFC assembly 20 due to excessive pulling is prevented. The wire harness and the plug body 40 can move unidirectionally, so that the movable allowance required when the wire harness is connected with the NFC assembly 20 is met, the installation difficulty is reduced, and the problem that the wire harness is not installed in place is solved.

As a preferred solution, the plug body 40 is a rubber plug, the plug body 40 and the wire harness wire sheath 60 may be manufactured by an integral injection molding process, and the peripheral wall of the inner cavity 31 of the sleeve 30 may also be made of a rubber material, so that a larger friction force exists between the plug body 40 and the inner cavity 31, and the plug body 40 and the inner cavity 31 may be tightly abutted against each other to perform a better limiting function, and meanwhile, the plug body 40 is not easy to shake by a vehicle body and slide out from the first end of the inner cavity 31 after the installation is completed.

In summary, the wire harness perforation limit protection device for a vehicle of the present invention has a sleeve 30 and a plug body 40, wherein the sleeve 30 can be in clamping fit with a sheet metal hole 11 of a vehicle body, an inner cavity 31 is provided in the sleeve 30, the caliber of a first end of the inner cavity 31 is larger than the caliber of a second end thereof, the plug body 40 is fixedly connected with at least part of a wire harness wire sheath 60, and the maximum value of the diameter of the plug body 40 is smaller than the caliber of the first end of the inner cavity 31 and larger than the caliber of the second end of the inner cavity 31. When in use, the plug body 40 and the wire harness extend into the first end of the inner cavity 31 of the sleeve 30, the wire harness extends out of the second end of the inner cavity 31, the wire harness on the side close to the first end of the inner cavity 31 is connected with the NFC assembly 20, and the wire harness on the side close to the first end of the inner cavity 31 can be pulled freely, adjusted to be long enough to facilitate installation, and convenience and efficiency of installation are improved. Then, the sleeve 30 is clamped onto the sheet metal hole 11, and the wire harness is pulled from one side close to the second end of the inner cavity 31, so that the wire harness surplus length on one side close to the first end of the inner cavity 31 is tightened, in the process, the plug body 40 fixedly connected with the wire harness moves from the first end to the second end of the inner cavity 31, and the diameter of the plug body 40 is larger than the caliber of the second end of the inner cavity 31, so that the plug body 40 can be blocked by extrusion of the peripheral wall of the inner cavity 31 in the moving process, the plug body 40 is finally clamped at a certain position between the first end and the second end of the inner cavity 31, the unidirectional limiting of the wire harness is realized, the wire harness between the plug body 40 and the NFC assembly 20 is just free from redundancy, and the wire harness can be fully utilized. After the plug body 40 and the inner cavity 31 are clamped, even if external force is used for pulling the wire harness, the external force can be converted into interaction force between the plug body 40 and the inner cavity 31, and the interaction force can not be transmitted to the joint of the wire harness and the NFC assembly 20, so that the risk of welding off caused by excessive pulling is prevented, the design that the wire harness can be prevented from falling off without adding a plug connector is realized, and the production cost is reduced. Meanwhile, as the wire harness passes through the inner cavity 31 inside the sleeve 30, the wire harness cannot contact the metal plate hole 11, and the problem that the sharp edge of the metal plate hole 11 cuts and damages the wire harness is avoided. And this be used for spacing protection device mounting structure of pencil perforation is simple, through adjusting sleeve 30 size, can satisfy the pencil protection and the spacing demand of different motorcycle types different positions, has higher popularization and application and worth.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.

Claims

A harness perforation limit protection device for a vehicle, comprising:

the sleeve (30) can be in clamping fit with a sheet metal hole (11) of a vehicle body, an inner cavity (31) is formed in the sleeve (30), and the caliber of a first end of the inner cavity (31) is larger than that of a second end of the inner cavity;

the plug body (40), the at least part fixed connection of plug body (40) and pencil wire skin (60), the maximum value of the diameter of plug body (40) is less than the bore of the first end of inner chamber (31) and is greater than the bore of the second end of inner chamber (31).
The wire harness perforation limit protection device according to claim 1, wherein one end of the sleeve (30) is connected with a flange plate (32), a first side surface (321) of the flange plate (32) close to the sleeve (30) can be abutted against the outer side surface of the sheet metal hole (11), and a fastening structure (50) for being fastened with the sheet metal hole (11) is arranged on the first side surface (321) of the flange plate (32).
The harness perforation limit protection device according to claim 2, wherein the snap structure (50) includes a base (51) connected between the sleeve (30) and the flange (32) and a plurality of snap members (52) provided on the base (51) and arranged along a circumferential direction of the flange (32);

each clamping piece (52) comprises a clamping part (521) which is connected to the edge of the base body (51) and extends along the radial direction, the clamping part (521) of each clamping piece (52) is matched with the first side surface (321) of the flange plate (32) to form a groove position (322), and the vehicle body sheet metal (10) can be clamped in the groove position (322) through the sheet metal hole (11).
The harness perforation limit protector according to claim 2, wherein the sleeve (30), the flange (32) and the snap structure (50) are an integrally formed structure.
A harness piercing stop protector according to claim 3, wherein each of the fastening members (52) further comprises an operating portion (522), the operating portion (522) is connected to the fastening portion (521) and extends away from the first side (321) of the flange (32), and the operating portion (522) is subjected to a radially inward force to enlarge a distance between the fastening portion (521) and the first side (321) of the flange (32) so that the fastening structure (50) is separated from the sheet metal hole (11).
The wire harness perforation limit protector according to claim 5, wherein an outer side surface of the operation portion (522) is provided with a slope (523), and the slope (523) is provided obliquely toward the sleeve (30).
Harness perforation limit protector according to any of claims 1 to 6, characterized in that the bore of the inner cavity (31) of the sleeve (30) gradually decreases from its first end to its second end.
Harness perforation limit protector according to claim 7, characterized in that the plug body (40) is in the form of a truncated cone.
The harness perforation limit protector according to any one of claims 1 to 6, wherein the plug body (40) is integrally formed at one end of a harness wire sheath (60).
Harness perforation limit protector according to any of claims 1-6, characterized in that the plug body (40) is rubber plug.