CN111799726A

CN111799726A - Via hole protective sheath and car

Info

Publication number: CN111799726A
Application number: CN202010419655.8A
Authority: CN
Inventors: 崔宇健; 马权
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-10-20
Also published as: WO2021233295A1

Abstract

The invention relates to the technical field of automobiles, and discloses a via hole protective sleeve and an automobile. The via hole protective sleeve comprises a clamping part and a shearing part, the clamping part is connected with the via hole in a sealing manner, and a wire hole is formed in the clamping part and penetrates through the clamping part; the shearing part is arranged at one end of the axis of the clamping part and seals the wire hole, and when the wire hole needs to penetrate through the wire harness, the shearing part is configured to be sheared so that the wire harness can penetrate through the wire hole. According to the wire harness through-hole protective sleeve, one end of the wire hole is sealed through the shearing part, and the clamping part of the through-hole protective sleeve is directly clamped into the through hole without penetrating through the through hole of the wire harness, so that the wire harness through-hole protective sleeve is simple in structure, convenient and fast to operate, and better in sealing performance and waterproofness; at the position of a via hole through which a wire harness needs to pass, only the shearing part needs to be sheared off, the wire hole penetrates through the hole protective sleeve, and then the clamping part is clamped into the via hole; the sealing and waterproofing that need the pencil and need not the through-hole department of pencil can be realized to the via hole protective sheath on the whole to play the purpose that reduces development cost.

Description

Via hole protective sheath and car

Technical Field

The invention relates to the technical field of automobiles, in particular to a via hole protective sleeve and an automobile.

Background

In the prior art, if the wire harness penetrates through the automobile body metal plate at the junction of the dry and wet area, holes need to be formed in the automobile body metal plate, and the wire harness through hole rubber sheath matched with the metal plate holes is developed. If a certain configuration of the vehicle does not have the section of the wire harness, a rubber plug cover needs to be synchronously developed and is used for being matched with the wire harness to pass through the hole rubber sheath so as to plug the open hole of the vehicle body. Therefore, in order to guarantee the sealing performance and the waterproof performance of the vehicle, aiming at the hole opening of the same vehicle body metal plate, a wiring harness through hole rubber sheath and a rubber blanking cover need to be developed to be matched with the wiring harness through hole rubber sheath, namely two sets of dies are needed, and the development cost is increased. In addition, pencil via hole rubber sheath and rubber blanking cover are two different parts, and are more loaded down with trivial details during the installation, and the junction can't guarantee better sealed and waterproof nature.

Therefore, a need exists for a via protection sleeve that solves the above problems.

Disclosure of Invention

Based on the above, the invention aims to provide the via hole protective sleeve and the automobile, which can be applied to via holes requiring wiring harnesses and not requiring wiring harnesses, reduce development cost and have better sealing property and waterproof property.

In order to achieve the purpose, the invention adopts the following technical scheme:

a via protection sleeve, comprising:

the clamping part is connected with the via hole in a sealing mode, and a wire hole is formed in the clamping part and penetrates through the clamping part;

the shearing portion is arranged at one end of the axis of the clamping portion and seals the wire hole, and when the wire harness needs to be passed through the wire hole, the shearing portion is configured to be sheared so that the wire harness can be arranged in the wire hole in a penetrating mode.

As an optimal scheme of via hole protective sheath, joint portion be provided with the joint groove one end first arch and the second of the joint groove other end is protruding, the via hole is arranged in the joint inslot, first arch with the second arch with via hole interference fit.

As a preferred scheme of via hole protective sheath, the bellied external diameter of second is greater than the bellied external diameter of first arch, first arch is kept away from the bellied one end of second is provided with the direction chamfer.

As a preferable scheme of the via hole protective sleeve, the shearing part is provided with a shearing groove along the circumferential direction of the shearing part.

As a preferable scheme of the via hole protective sleeve, the circumferential inner wall of the line hole is provided with waterproof rubber coating.

As a preferable scheme of the via hole protective sleeve, three layers are arranged along the axial direction of the line hole in the waterproof rubber coating.

As a preferred scheme of a via hole protective sheath, still be provided with operating portion, operating portion set up in joint portion with between the shearing part, the line hole runs through operating portion.

As a preferred scheme of via hole protective sheath, the one end that the joint portion was kept away from to the operation portion is provided with the operation arch, the operation arch is followed the circumference setting of operation portion.

As a preferred scheme of via hole protective sheath, the shearing part with joint portion integrated into one piece.

An automobile comprises the via hole protective sleeve in any scheme.

The invention has the beneficial effects that: through the axis one end at joint portion sets up the shearing part, seals the one end in line hole, and in the via hole department that need not pass the pencil, directly with the joint portion card of via hole protective sheath insert the via hole can, it is simple more convenient than the mode through pencil via hole rubber sheath and rubber blanking cover complex among the prior art, and leakproofness and waterproof nature are better. At the via hole department that the wire harness passed that needs, only need cut the shearing portion and fall, make the line hole run through the hole protective sheath, then with joint portion joint income via hole can again. The sealing and the waterproofing of the through hole that need the pencil and need not the pencil can be realized to the via hole protective sheath on the whole, unites two into one the function of pencil via hole rubber sheath and rubber blanking cover among the prior art, reduces two sets of moulds into one set to reach the purpose that reduces development cost.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a schematic view of a via protection sleeve according to an embodiment of the present invention;

FIG. 2 is a front view of a via protection sleeve according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

fig. 4 is a partially enlarged schematic view at B in fig. 3.

In the figure:

1-a clamping part; 11-line holes; 12-a clamping groove; 13-a first projection; 14-a second protrusion; 15-guiding chamfering; 16-waterproof encapsulation;

2-a shearing section; 21-a shearing groove;

3-an operation section; 31-operating projection.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.

As shown in fig. 1 to 4, the present embodiment provides a via hole protection sleeve for an automobile, which includes a clamping portion 1 and a cutting portion 2, wherein the clamping portion 1 is connected with a via hole in a sealing manner, a wire hole 11 is arranged in the clamping portion 1, and the wire hole 11 penetrates through the clamping portion 1; the shearing part 2 is arranged at one end of the axis of the clamping part 1 and seals the wire hole 11, and when the wire hole 11 needs to penetrate through a wire harness, the shearing part 2 is configured to be sheared so that the wire harness can penetrate through the wire hole 11.

The shearing part 2 is arranged at one end of the axis of the clamping part 1, one end of the line hole 11 is sealed, and the clamping part 1 of the via hole protective sleeve is directly clamped into the via hole without penetrating through the via hole of the wiring harness, so that the wiring harness protective sleeve is simpler and more convenient than the prior art in a mode of matching the wiring harness via hole rubber sheath with the rubber blanking cover, and has better sealing performance and waterproofness; at the position of a via hole through which a wire harness needs to pass, only the shearing part 2 needs to be sheared off, the wire hole 11 penetrates through the hole protective sleeve, and then the clamping part 1 is clamped into the via hole; the sealing and the waterproofing of the through hole department that need the pencil and do not need the pencil can be realized to the via hole protective sheath on the whole, unites two into one the function of pencil via hole rubber sheath and rubber blanking cover among the prior art, reduces two sets of moulds into one to play the purpose that reduces development cost.

Specifically, for realizing the joint between via hole protective sheath and the card hole, joint portion 1 is provided with joint groove 12, the first arch 13 of joint groove 12 one end and the second arch 14 of the joint groove 12 other end, and in joint groove 12 was arranged in to the via hole, first arch 13 and second arch 14 all towards the via hole setting, via hole and first arch 13, the equal interference fit of second arch 14.

Preferably, one end of the first protrusion 13, which is far away from the second protrusion 14, is provided with a guide chamfer 15, which is used for guiding the first protrusion 13 when the first protrusion 13 passes through the via hole, so that the first protrusion 13 can pass through the via hole conveniently; correspondingly, the outer diameter of the second protrusion 14 is larger than that of the first protrusion 13, so that on one hand, the second protrusion 14 is prevented from passing through the through hole together with the first protrusion 13 and losing the effect of sealing the through hole, and on the other hand, the first protrusion 13 and the second protrusion 14 are arranged at intervals along the radial direction of the through hole, and the sealing performance and the water resistance of the through hole protective sleeve are further improved.

Further, the via hole protective sheath still is provided with the operation portion 3 of arranging between joint portion 1 and shearing portion 2, and the line hole 11 runs through operation portion 3. Further, an operation protrusion 31 is disposed at an end of the operation portion 3 away from the clamping portion 1, and the operation protrusion 31 is disposed along a circumferential direction of the operation portion 3. When the via hole protective sleeve needs to be placed in the via hole, an operator can hold the operation part 3 by hand and clamp the clamping part 1 in the via hole, so that the process is convenient and simple; when the via hole protective sheath needs to be taken down, the operation bulge 31 can also increase the anti-skidding effect.

Preferably, when the wire harness needs to be penetrated through the via hole, the shearing part 2 needs to be sheared to be used for the wire harness to pass through, and in order to determine the shearing position and enable the shearing to be more labor-saving, the shearing part 2 is provided with a shearing groove 21 along the circumferential direction; in order to realize the sealing performance and the waterproof performance between the wire harness and the wire hole 11, the circumferential inner wall of the wire hole 11 is provided with the waterproof rubber coating 16, and more preferably, the waterproof rubber coating 16 is provided with three layers along the axial direction of the wire hole 11, so that the wire harness can be effectively prevented from moving in the wire hole 11 while the sealing performance and the waterproof performance are ensured.

In the present embodiment, the cutting portion 2, the operation portion 3 and the engaging portion 1 are integrally formed; specifically adopt the notes mode of moulding to annotate and press the feeding, radially divide the mould, pass through the sleeve with compressed air and send the gas, make the partial inflation of body, deviate from the core, the product resumes free state, its characteristics are: the feeding is uniform and compact, the pressure is high, and bubbles and flow marks can be effectively avoided; it should be noted that the processing method of injection-molding feeding is prior art, and is not described herein in detail.

Furthermore, the via hole protective sleeve is made of ethylene propylene diene monomer rubber, and the ethylene propylene diene monomer rubber has the advantages of high cost performance, aging resistance, corrosion resistance, good insulativity, wide applicable temperature range and the like; specifically, the raw rubber density of the ethylene propylene diene monomer is only 0.86-0.90 g/cm³(ii) a The volume resistivity is 1016Qcm, the breakdown voltage is 30-40 MV/m, and the dielectric constant (1kHz, 20 ℃) is 2.27; the lowest use temperature is-40 to-60 ℃, and the product can be used at 130 ℃ for a long time.

The embodiment also discloses an automobile which comprises the via hole protective sleeve in any scheme.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. A via protective sheath, comprising:

the clamping part (1) is connected with the via hole in a sealing mode, a line hole (11) is formed in the clamping part (1), and the line hole (11) penetrates through the clamping part (1);

the wire harness cutting device comprises a cutting portion (2) which is arranged at one end of the axis of the clamping portion (1) and is sealed with the wire hole (11), when the wire hole (11) needs to penetrate through a wire harness, the cutting portion (2) is configured to be cut, so that the wire harness can penetrate through the wire hole (11).

2. The via hole protective sheath of claim 1, characterized in that the clamping portion (1) is provided with a clamping groove (12), a first protrusion (13) at one end of the clamping groove (12) and a second protrusion (14) at the other end of the clamping groove (12), the via hole is disposed in the clamping groove (12), and the first protrusion (13) and the second protrusion (14) are in interference fit with the via hole.

3. The via protection casing according to claim 2, characterized in that the second protrusion (14) has an outer diameter larger than the outer diameter of the first protrusion (13), and that the end of the first protrusion (13) remote from the second protrusion (14) is provided with a guiding chamfer (15).

4. The via protective casing according to claim 1, characterized in that the cutout (2) is provided with a cutout groove (21) along its circumference.

5. The via protective casing according to claim 1, characterized in that the inner circumferential wall of the wire hole (11) is provided with a waterproof encapsulation (16).

6. The via protective casing according to claim 5, characterized in that said waterproof coating (16) is provided with three layers along the axial direction of said string hole (11).

7. The via protective sheath according to claim 1, further comprising an operating portion (3), wherein the operating portion (3) is disposed between the clamping portion (1) and the cutting portion (2), and the wire hole (11) penetrates through the operating portion (3).

8. The via protection sleeve according to claim 7, characterized in that an operation protrusion (31) is provided at one end of the operation portion (3) away from the clamping portion (1), and the operation protrusion (31) is provided along the circumference of the operation portion (3).

9. The via protection casing according to any of claims 1-8, wherein the cutout (2) is integrally formed with the snap-in part (1).

10. An automobile comprising the via protective cover of any of claims 1-9.