CN110635413B

CN110635413B - Multichannel cable fixing device capable of embedding nut

Info

Publication number: CN110635413B
Application number: CN201911011590.7A
Authority: CN
Inventors: 魏培坤; 原野; 袁征; 刘彦君; 施丽青; 陈强
Original assignee: Commercial Aircraft Corp of China Ltd; Shanghai Aircraft Design and Research Institute Commercial Aircraft Corporation of China Ltd
Current assignee: Commercial Aircraft Corp of China Ltd; Shanghai Aircraft Design and Research Institute Commercial Aircraft Corporation of China Ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-12-15
Anticipated expiration: 2039-10-23
Also published as: CN110635413A

Abstract

The invention provides a multi-channel wire harness fixing device for a pre-embedded nut, which consists of a support rod and a self-locking nut with a bracket, wherein the support rod is provided with a stud, the stud is provided with a mounting hole and lightening holes, and the lightening holes and the mounting hole are spaced on the stud along the length direction in an alternating mode. One end of the supporting rod is provided with a fixing hole, and the other end of the supporting rod is provided with a long round hole for installing and adjusting the supporting rod. The self-locking nut with the bracket comprises a nut fixing bracket which comprises a protrusion for preventing the bracket from loosening and a stop block convenient for positioning. When the clamp is installed, the nut with the bracket is plugged into the corresponding installation hole, and the bolt and the washer are installed, so that the operation is very simple and convenient.

Description

Multichannel cable fixing device capable of embedding nut

Technical Field

The invention belongs to the field of installation design of electrical wiring harnesses, and particularly relates to a multi-channel wiring harness fixing device capable of embedding nuts and an installation method of the fixing device.

Background

Currently, a large number of plastic support devices are used on aircraft. As shown in fig. 1, the support device is composed of a support rod body 1 and a support rod adapter 2, the support rod adapter and the support rod are fixed together through a screw and a clamping piece nut, and after the support rod adapter and the support rod are fixed together, the support rod 1 and the support rod adapter 2 are fixed on a structural support through a screw 3 and a nut 4.

However, such support devices have several disadvantages during use. In one aspect, the support bar 1 is provided with holes 6 on three sides for mounting the clips 5. For this reason, the size of the support rod needs to be designed to be large enough to provide the holes 6, specifically, the size of the support rod is L × 20.5mm (L is the length of the support rod 1), which results in that the support rod 1 is heavy, bulky, and occupies a large space, thereby greatly compressing the cable laying space in a certain space. Further, although the support bar is provided with the holes 6 on three sides, only one side of the support bar is used to mount the clip 5 in most cases, resulting in low utilization.

On the other hand, since the studs 7 are provided between the screw holes, the operation space is affected, and therefore, the installation becomes inconvenient, so that the nut washer is liable to fall off at the time of installation and removal, and becomes a surplus on the aircraft. If the clip nut 8 is used to replace a common self-locking nut to fix the hoop 5, the tail end of the clip nut 8 is too close to the wiring harness 9 (see fig. 2), which affects the safety of the airplane, and meanwhile, the clip nut 8 is heavy and can increase the weight of the airplane when being used in large quantities.

In addition, since the support rod 1 requires the use of the adapter 2, both the weight and the installation workload are increased.

Accordingly, there is a need in the art for a structure of a support pole that can overcome the above disadvantages without reducing strength.

Disclosure of Invention

The invention provides a wire harness fixing device, which changes the structural form of an original support rod from the original hollow form into the form of a vertical rib, simultaneously, lightening holes and mounting holes are arranged on the vertical rib, and a self-locking nut with a bracket is used for mounting a hoop, so that the size of the fixing device is reduced on the premise of not reducing the strength, the weight is lightened, and the installation is convenient.

Specifically, the wire harness fixing device of the present invention includes a support member having at least one through hole formed therethrough in a direction perpendicular to a longitudinal direction of the support member, the support member having a stud having at least one mounting hole formed therethrough in a direction transverse to the through hole, and the through hole of the support member being arranged to intersect with the corresponding mounting hole. The wire harness fixing device of the present invention further comprises a mounting member inserted into the mounting hole of the support member, wherein the mounting member includes a preset hole. Further, the wire harness fixing device includes a fixing member that passes through the through hole of the support member and is fixed in the preset hole of the mounting member.

According to a preferred embodiment, the support member is made of a thermo-formed plastic.

According to a preferred embodiment, the support member is made of a nylon material.

According to a preferred embodiment, the support member further comprises at least one lightening hole, the lightening hole and the mounting hole being arranged spaced apart on the stud in an alternating manner along the length direction.

According to a preferred embodiment, the support rod part has a fixing hole at one end and another fixing hole at the opposite end.

According to a preferred embodiment, said further fixing hole is an oblong hole.

According to a preferred embodiment, the mounting is a self-locking nut with a bracket, and the pre-set hole of the mounting is formed by a nut fixing bracket and a self-locking nut.

According to a preferred embodiment, the nut fixing bracket includes a projection formed on each side edge of the nut fixing bracket, the projection being configured to frictionally engage with a surface of the mounting hole when the self-locking nut with bracket is inserted into the mounting hole of the support member.

According to a preferred embodiment, the nut securing bracket comprises a stop configured such that, when the stop is in contact with the stud of the fixture, the centre line of the self-locking nut with bracket coincides exactly with the centre line of the hole.

The invention also provides an installation method of the wire harness fixing device, which comprises the following steps:

inserting the mounting member into the mounting hole of the support member;

mounting the supporting part on a bracket by using a fixing piece through fixing holes at two ends of the supporting part;

installing a harness clip with a fixture through a plurality of through-holes in an upper surface of the support member, the harness clip

A through hole is formed vertically through the support member.

According to a preferred embodiment, the harness fixing device is a multi-channel cable fixing device in which nuts can be embedded.

Additional features and advantages of the nut-embeddable, multi-channel harness securement device described herein will be set forth in the detailed description which follows, and will be apparent to those skilled in the art from that description or recognized by practicing the embodiments described herein, including the detailed description which follows, the claims, and the appended drawings.

Drawings

With reference to the above objects, the technical features of the present invention are clearly described in the following claims, and its advantages are apparent from the following detailed description with reference to the accompanying drawings, which illustrate by way of example a preferred embodiment of the present invention, without limiting the scope of the inventive concept.

Figure 1A is a perspective view of a strut used in a prior art aircraft,

FIG. 1B is another perspective view of the support pole of FIG. 1 showing the wiring harness and clip nut of the support pole;

FIG. 2 is an axial view of a preferred embodiment of a wire harness securing device according to the present invention showing a self-locking nut with a bracket;

FIG. 3 is a top view of the wire harness securing device of FIG. 2;

FIG. 4 is a perspective view of a preferred embodiment of a wire harness retention device after placement of a clip according to the present invention;

fig. 5 is an exploded perspective view showing the installation of a preferred embodiment of a wire harness fixing device according to the present invention;

FIG. 6 is a cross-sectional view of a preferred embodiment of a wire harness retainer device according to the present invention installed; and

fig. 7 is a perspective view of a preferred embodiment of the multi-channel wire harness fixing device of the embedded nut after the wire harness is installed according to the present invention.

List of reference numerals

1 support bar

2 adapter

3 screw

4 nut

5 Clamp

6 holes

7 stud

8-clip nut

9 wire harness

10 support rod

11 through hole

12 stud

13 mounting hole

14 lightening hole

15 fixing hole

16 fixed hole (Long round hole)

20 self-locking nut with bracket

21 nut fixing bracket

22 common self-locking nut

23 bulge

24 stop dog

30 fittings (screw)

41 bracket

42 screw

43 washer

44 self-locking nut

50 clamp

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present invention.

Fig. 2 to 7 show one embodiment of the wire harness fixing device according to the present invention. Specifically, as shown in fig. 2, the wire harness fixing device includes a support member. In this embodiment, the support member is in the form of a support bar 10. The brace 10 is made of a material such as a thermoformed plastic. In other embodiments, the support rod may be made of nylon material. One end of the support bar 10 is optionally depressed downward in the longitudinal direction.

The support bar 10 further has at least one through hole 11 formed therethrough in a direction perpendicular to the longitudinal direction of the support bar 10, the support bar 10 is provided with studs 12, the studs 12 have at least one mounting hole 13 formed therethrough in a direction transverse to the through hole 11, and the through holes 11 are arranged to intersect with the corresponding mounting holes 13 of the fixing means, and in particular, the through holes 11 are configured to penetrate the support bar 10 orthogonally to the corresponding one mounting hole 13 of the support bar 10.

There may be a plurality of through holes 11 and correspondingly a corresponding number of mounting holes 13.

Preferably, the studs 12 have at least one relief hole 14. Preferably, there are a plurality of lightening holes, and more preferably, the lightening holes 14 and the mounting holes 13 are arranged to be spaced apart on the stud 5 in the length direction in an alternating manner. The studs 12 and lightening holes 14 provide support for the brace while reducing the volume of the brace 10, for example, in one embodiment, the brace 10 may have a dimension L14 mm 16mm, where L is the longitudinal length of the brace. In addition, the mounting holes 13 and the lightening holes 14 enable the support bar 10 to be lightened, in particular by about 25%, with respect to the support bars currently in use. Although the opening shapes of the mounting hole 13 and the lightening hole 14 are designed to be, for example, a rounded rectangle and a circle in the present embodiment, respectively, those skilled in the art will appreciate that the mounting hole 13 and the lightening hole 14 may have other suitable opening shapes.

The wire harness fixing device of the present invention further includes a mounting member for being inserted into the mounting hole 13, and a fixing member passing through the through-hole 11 of the support bar 10 corresponding to the mounting hole 13 into which the mounting member is inserted and fixed in a preset hole of the mounting member, thereby fixing the clip 50 to the support bar 10. According to a preferred embodiment, as shown in fig. 4, the mounting member may be a self-locking nut 20 with a bracket and the fixing member may be a screw 30.

Referring back to fig. 2, the bracketed self-locking nut 20 includes a nut securing bracket 21. The nut fixing bracket 21 is used to mount and fix a general self-locking nut 22, which prevents a possible redundant situation in which the nut and washer fall off when the band 50 is mounted and dismounted.

Further, the nut fixing bracket 21 includes protrusions 23, and the protrusions 23 are formed on each side edge of the nut fixing bracket 21 (only the protrusion on one side edge is shown in the drawing). The protrusions 23 are configured to frictionally engage the surface of the mounting hole 13 of the fixture such that the bracket 21 maintains a certain friction with the surface of the mounting hole 13, thereby preventing the nut with the bracket from loosening, and when it is desired to remove the nut with the bracket, it is simply pushed out by hand from the other side of the blind. Although there are two projections 23 in the present embodiment, those skilled in the art will appreciate that the number of projections 23 may vary depending on the mounting hole 13, and may have any suitable shape of the projections 23.

The nut holding bracket 21 further comprises a stop 24, which stop 24 protrudes from both sides at the bottom of the nut holding bracket 21 in this embodiment, but may also protrude from either side at the bottom. The stop 24 is configured such that when the stop 24 is in contact with the stud 12 of the fixture, the centre line of the self-locking nut coincides exactly with the centre line of the through-hole 11. Thus, the clip 50 can be fastened to the support pole 10 by screwing the screw 30 with the self-locking nut 20 with a bracket through the through hole 11 without other operations or additional components. This therefore reduces the bulk and facilitates installation.

As shown in fig. 2, and more particularly to fig. 3, a fixing hole 15 is provided at one end of the support pole 10, the fixing hole 15 being used to fix the support pole 10 in place by, for example, a threaded connection. At the other end of the downward recess of the support bar 10, there is a fixing hole, preferably an oblong hole 16, formed longitudinally therethrough, the oblong hole 16 serving as an installation adjustment function to prevent positional deviation upon installation.

Fig. 5 is an exploded perspective view showing an installation method of a wire harness fixing device of the insert nut according to the present invention, and fig. 6 is a sectional view of the installed wire harness fixing device of the insert nut according to the present invention. The specific installation steps of the fixing device are as follows:

1) inserting the self-locking nut 20 with bracket into the mounting hole 13 of the support rod 10;

2) the support rod is arranged on the bracket 41 through the fixing holes 15 and the long round holes 16 at the two ends of the support rod 10 by using a screw 42, a washer 43 and a self-locking nut 44;

3) the harness clip 50 is installed through the through-hole of the support bar 10 with the screw 30 and the washer.

The multichannel fixing device after the wire harness is installed is shown in figure 7. Compared with the existing installation mode, the installation mode of the invention has the following advantages:

a) the volume is small, the weight is light, and the strength is good;

b) the installation is simple and convenient, and the installation can be carried out in a narrow space or a place with structural obstruction;

c) a support rod adapter is not required to be installed, so that the installation time of the EWIS is reduced;

d) the clamp is simple and convenient to maintain, the clamp can be removed only by operating and removing the screw on one side, the screw (nut) is fixed on one side, and the nut (screw) is rotated on the other side like the prior art, so that the installation time of the wire harness is greatly saved, and the mass production efficiency of the airplane is improved;

e) during installation and dismantlement, need not worry that nut and packing ring drop, reduce the risk that the surplus appears.

f) The nut is buried in the support rod, and the problem of interference between the nut and peripheral wiring harnesses is avoided.

While the structure and method of installation of the present invention has been described in connection with the preferred embodiments, it is to be understood by those skilled in the art that the above examples are intended in an illustrative rather than in a limiting sense. Therefore, modifications and variations of the present invention may be made within the true spirit and scope of the claims, and these modifications and variations are intended to fall within the scope of the claims of the present invention.

Claims

1. A cable fixation device, comprising:

a support member having at least one through hole formed therethrough in a direction perpendicular to a longitudinal direction of the support member, wherein the support member has a stud having at least one mounting hole formed therethrough in a direction transverse to the through hole, and wherein the through hole of the support member is arranged to intersect with the corresponding mounting hole;

a mounting member inserted into the mounting hole of the support member, wherein the mounting member includes a preset hole; and

and the fixing piece penetrates through the through hole of the supporting part and is fixed in the preset hole of the mounting piece.

2. The cable fixing device according to claim 1,

the support member is made of a thermoformed plastic.

3. The cable fixing device according to claim 1,

the support member is made of a nylon material.

4. The cable fixing device according to claim 1,

also included is at least one relief hole, the relief hole and the mounting hole being arranged to be spaced apart lengthwise on the stud in an alternating manner.

5. The cable fixing device according to claim 1,

the support member has a fixing hole at one end and another fixing hole at the opposite end.

6. The cable fixing device according to claim 5,

the other fixing hole is a long round hole.

7. The cable fixing device according to claim 1,

the mounting member is a self-locking nut with a bracket, and the preset hole of the mounting member is formed by a nut fixing bracket and the self-locking nut.

8. The cable fixing device according to claim 7,

the nut fixing bracket includes a protrusion formed on each side edge thereof, the protrusion being configured to frictionally engage with a surface of the mounting hole when the self-locking nut with bracket is inserted into the mounting hole of the support member.

9. The cable fixing device according to claim 7,

the nut securing bracket includes a stop configured such that, when the stop is in contact with the stud of the fixture, a center line of the self-locking nut with bracket coincides with a center line of the through-hole.

10. A method of installing a cable fixture according to claim 5, the cable fixture being a nut-embeddable multi-channel cable fixture, the method comprising the steps of:

inserting the mounting member into the mounting hole of the support member;

a harness clip is mounted with a fastener through a plurality of through-holes formed through the support member vertically.