Wire harness fixing device for airplane

Abstract

The utility model provides a wiring harness fixing device for an airplane, which is convenient for wiring harness installation, modification and maintenance. A wire harness fixing device for an aircraft is provided with: a base which is adhered to an object to be adhered on the aircraft and which is provided with a first screw thread; the base end of the supporting screw rod is provided with a second thread matched with the first thread; the fastening piece is detachably connected to the supporting screw rod; and a wire harness holder which is mounted at the front end of the support screw via a fastener.

Description

Technical Field

[0001] The utility model relates to a wire harness fixing device for an aircraft, belonging to the field of electrical wire harness installation design, and particularly relates to an adhesive wire harness fixing device with a separable support screw and base, which is convenient for the installation, modification and maintenance of the wire harness. Background Art

[0002] As the "neural network" of an aircraft, the installation of cables accounts for a relatively large proportion in the overall aircraft assembly work. Since riveting or screwing brackets are generally avoided as much as possible for the interior panels and composite structures of the aircraft, the cables near the interior panels and composite structures are generally bonded to the installation structure by a bonding bracket 1X, and then the wire harness is fixed to the bonding bracket 1X (see Figure 12 ). Especially on composite aircraft, the usage amount of bonding brackets is much larger than that of metal aircraft.

[0003] Once the bonding bracket 1X is bonded, the installation position and form of its clamp are also correspondingly determined. During the installation, modification and maintenance of the wire harness, once it is necessary to change the position of the bonding bracket 1X, heating or cleaning with a solution is required to remove the glue, which takes a long operation time and incurs a high modification cost.

[0004] The deficiencies of this kind of bonding bracket are as follows:

[0005] a) Once the traditional bonding bracket is bonded, the wire harness installation interface cannot be changed. As a flexible device, there are certain differences between the designed state and the physical object of the wire harness, and the fixing bracket often needs to be adjusted. At the same time, the circuits on the aircraft are public systems and are easily affected by the modification of other systems and change the laying path. If the bonding bracket needs to be removed and replaced, heating or cleaning with a solution is required to remove the glue. The process takes a long time, seriously affecting the modification efficiency, and it is easy to damage the installation structure itself during glue removal (see Figure 13 ).

[0006] b) The traditional bonding bracket is a standard part with fewer installation forms, and there is only one installation form for one model. For installation structures that can only be bonded, it is difficult to meet special installation requirements if the installation space is narrow. Content of the Utility Model

[0007] The utility model is completed in view of the above problems, and the purpose is to provide a wire harness fixing device for an aircraft that is convenient for the installation, modification and maintenance of the wire harness.

[0008] To achieve the above purpose, the utility model provides a wire harness fixing device for an aircraft, comprising: a base, which is bonded to an object to be bonded on the aircraft, and the base is provided with a first thread; a support screw, the base end of which is provided with a second thread that matches the first thread; a fastener, which is detachably connected to the support screw; and a wire harness holder, which is installed at the front end of the support screw via the fastener.

[0009] For the wire harness fixing device for an aircraft according to the present utility model, the support screw and the base are separable, facilitating the installation, modification, and maintenance of the wire harness.

[0010] For example, the first thread is an internal thread or an external thread, and the second thread is an external thread or an internal thread.

[0011] In addition, in the above-mentioned wire harness fixing device for an aircraft, it may also be that the fastener is threadedly and firmly connected to the support screw. Thus, the two can be connected with a simple structure.

[0012] Preferably, the screwing direction of the support screw with respect to the threaded fastening of the base is the same as the screwing direction of the fastener with respect to the threaded fastening of the support screw. Thus, it is possible to ensure that the rotation directions of the threads at both ends of the support screw are locked with each other.

[0013] In addition, in the above-mentioned wire harness fixing device for an aircraft, it may also be that the support screw extends linearly in a direction perpendicular to the base.

[0014] In addition, in the above-mentioned wire harness fixing device for an aircraft, it may also be that the support screw has a bent section.

[0015] In addition, in the above-mentioned wire harness fixing device for an aircraft, it may also be that the fastener is a bolt, and the wire harness holder has a snap ring portion for accommodating the wire harness. The snap ring portion is a non-closed shape provided with a notch, and tightening portions are provided at the notches at both ends of the snap ring portion. Through holes for passing the rod portion of the bolt are provided in the tightening portions. Thus, the wire harness holder can be installed at the front end of the support screw with a simple structure.

[0016] In addition, in the above-mentioned wire harness fixing device for an aircraft, it may also be that a lock washer is provided between the tightening portion and the head of the bolt and / or between the base and the support screw. Thus, loosening prevention of the installation part of the wire harness holder and the support screw is achieved.

[0017] In addition, in the above-mentioned wire harness fixing device for an aircraft, it may also be that the base has a protrusion in the middle, and the first thread is formed on the protrusion.

[0018] In addition, in the above-mentioned wire harness fixing device for an aircraft, it may also be that the base has a groove in the middle, and the first thread is an internal thread formed in the groove.

[0019] In addition, in the above-described wire harness fixing device for an aircraft, it is also possible that the first thread is an external thread, and the support screw has: a first portion provided with an internal thread as the second thread; and a second portion located on the front end side of the first portion and provided with an external thread that mates with the fastener, the outer diameter of the second portion being smaller than the outer diameter of the first portion.

[0020] The wire harness fixing device for an aircraft according to the present utility model provides an adhesive wire harness fixing device in which the support screw and the base can be separated, facilitating wire harness installation, modification, and repair, and enabling adjustment of the height and angle of the wire harness holding member (wire harness installation interface) as needed (the support screw can be replaced without removing the adhesive base). BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. is a perspective view schematically showing a wire harness fixing device for an aircraft according to an embodiment of the present utility model.

[0022] Figure 2 FIG. is a perspective view schematically showing the base and the support screw of a wire harness fixing device for an aircraft according to an embodiment of the present utility model.

[0023] Figure 3 FIG. is a perspective view schematically showing the base of a wire harness fixing device for an aircraft according to an embodiment of the present utility model.

[0024] Figure 4 FIG. is a view for explaining the installation process of a wire harness fixing device for an aircraft according to an embodiment of the present utility model.

[0025] Figure 5 FIG. is a view for explaining the installation process of a wire harness fixing device for an aircraft according to an embodiment of the present utility model.

[0026] Figure 6 FIG. is a perspective view schematically showing the support screw of Modification 1.

[0027] Figure 7 FIG. is a perspective view schematically showing the support screw of Modification 2.

[0028] Figure 8 FIG. is a perspective view schematically showing the support screw of Modification 3.

[0029] Figure 9 FIG. is a perspective view schematically showing the base of Modification 3.

[0030] Figure 10 FIG. is a perspective view schematically showing the base of Modification 4.

[0031] Figure 11 FIG. is a perspective view schematically showing the support screw of Modification 5.

[0032] Figure 12 It is a diagram showing an example of a conventional adhesive bracket.

[0033] Figure 13 It is a diagram for explaining the debonding operation performed when replacing a conventional adhesive bracket.

[0034] (Symbol Explanation)

[0035] 1 Aircraft wire harness fixing device

[0036] 11, 11C, 11D Base

[0037] 12, 12A, 12B, 12C, 12E Support screw

[0038] 12A1, 12E1 Bending section

[0039] 13 Fastener

[0040] 14 Wire harness retainer

[0041] 15 Lock washer

[0042] 112, 112C Protrusion

[0043] 113 Groove

[0044] 121 First part

[0045] 122 Second part

[0046] 141 Snap ring part

[0047] 142 Tightening part

[0048] 1421 Through hole Detailed implementation

[0049] Hereinafter, with reference to the drawings, the technical solutions of the embodiments and modification examples of the present utility model will be described. In addition, the scope of the present utility model is not limited to the following embodiments and modification examples, and can be arbitrarily changed within the scope of the technical idea of the present utility model. In addition, in the following drawings, in order to facilitate understanding of each structure, the actual structure may sometimes be different from the scale, quantity, etc. in each structure.

[0050] <First Embodiment>

[0051] Figure 1 It is a perspective view schematically showing the aircraft wire harness fixing device 1 of this embodiment. Figure 2 It is a perspective view schematically showing the base 11 and the support screw 12 of the aircraft wire harness fixing device 1 of this embodiment. Figure 3 It is a perspective view schematically showing the base 11. Figure 4This is a diagram for explaining the installation process of the wire harness fixing device 1 for aircraft. Figure 5 This is a diagram for explaining the installation process of the wire harness fixing device 1 for aircraft.

[0052] This embodiment provides a wire harness fixing device 1 for aircraft, which includes a base 11, a support screw 12, a fastener 13, and a wire harness holder 14. The base 11 is adhesively bonded to an object to be bonded on the aircraft (such as an installation structure like an interior structure or a composite structure). The bonding process of the base 11 to the object to be bonded can adopt various known methods in the art and will not be elaborated here.

[0053] The base 11, the support screw 12, and the fastener 13 are arranged in sequence from the proximal end side to the distal end side. The wire harness holder 14 is clamped by the support screw 12 and the fastener 13. Here, the "proximal end side" refers to the side close to the object to be bonded, and the "distal end side" refers to the side far from the object to be bonded.

[0054] The base 11 is provided with an external thread as the first thread. More specifically, the base 11 has a chassis portion 111 and a protrusion 112 formed at the middle position of the chassis portion (see Figure 3 ). That is, the base 11 is provided with a protrusion 112 in the middle. The shape of the chassis portion 111 is not particularly limited. For example, it can be circular when viewed from above. The protrusion 112 is in a substantially cylindrical shape extending from the chassis portion 111 toward the distal end side. The first thread is formed on the outer peripheral surface of the protrusion 112. The material of the base 11 can be, for example, glass fiber / polyetherimide.

[0055] The support screw 12 extends linearly in a direction perpendicular to the base 11. The support screw 12 can have a fixed outer diameter in the extending direction. The support screw 12 has, for example, a circular outer contour when viewed from above. In addition, the support screw 12 can also have other shaped outer contours such as a polygon or an ellipse when viewed from above. The material of the support screw 12 can be the same as or different from that of the base 11.

[0056] The proximal end of the support screw 12 is provided with a second thread that mates with the first thread. In other words, the support screw 12 and the base 11 are formed separately and are connected by screw fastening (threaded connection). In this embodiment, the support screw 12 has a first nut portion 12a at the proximal end. The second thread is the internal thread of the first nut portion 12a.

[0057] The fastener 13 is detachably connected to the support screw 12. In this embodiment, the fastener 13 and the support screw 12 are connected by screw fastening. The fastener 13 is a bolt.

[0058] The distal end of the support screw 12 has a second nut portion 12b that mates with the bolt 13. The second nut portion 12b is formed with an internal thread that is threadedly fastened to the bolt 13 as the third thread.

[0059] The wire harness holder 14 is installed at the front end of the support screw 12 via the fastener 13. The wire harness holder 14 can adopt a clamp structure. The wire harness holder 14 has a snap ring portion 141 for receiving the wire harness. The snap ring portion 141 is of a non-closed shape with a notch provided. The snap ring portion 141 is configured to be elastic and is used to receive and fix the wire harness therein. At the notches at both ends of the snap ring portion 141, there are tightening portions 142 provided. The tightening portions 142 are provided with through holes 1421 through which the rod portion of the bolt 13 passes. The bolt 13 passes through the through holes 1421 in the two sheet-like tightening portions 142 and is threadedly fastened to the second nut portion 12b of the support screw 12, thereby installing the wire harness holder 14 at the front end of the support screw 12, and the wire harness holder 14 (the tightening portion 142 thereof) is held in a clamped manner between the support screw 12 and the fastener 13.

[0060] Preferably, the screwing direction of the support screw 12 relative to the base 11 for threaded fastening is the same as the screwing direction of the fastener 13 relative to the support screw 12 for threaded fastening. Especially for a straight screw, the rotation directions of the threads at both ends are ensured to lock each other. For example, the screwing direction of the support screw 12 relative to the base 11 for threaded fastening and the screwing direction of the fastener 13 relative to the support screw 12 for threaded fastening are both clockwise when viewed from the proximal end side, or the screwing direction of the support screw 12 relative to the base 11 for threaded fastening and the screwing direction of the fastener 13 relative to the support screw 12 for threaded fastening are both counterclockwise when viewed from the proximal end side.

[0061] A lock washer 15 is provided between the tightening portion 142 and the head of the bolt 13 for preventing loosening. In addition, a washer can also be provided between the support screw 12 and the base 11 as needed for preventing loosening, and a flat washer or a spring washer, etc. can be adopted.

[0062] The installation of the aircraft wire harness fixing device 1 on the bonding object on the aircraft, for example, includes the following steps:

[0063] a) As Figure 4 shown, the base 11 and the support screw 12 are installed on the bonding object T. The base 11 can be bonded to the bonding object T after screwing the support screw 12 and the base 11 together, or the support screw 12 can be screwed to the base 11 after bonding the base 11 to the bonding object T.

[0064] b) As Figure 5 shown, the wire harness holder 14 and the wire harness W are installed. For example, it includes passing the bolt 13 through the through hole 1421 in the tightening portion 142 of the wire harness holder 14 (see Figure 1 ) and threadedly fastening it to the second nut portion 12b of the support screw 12, thereby installing the wire harness holder 14 at the front end of the support screw 12.

[0065] <Modified Example 1>

[0066] Figure 6 This is a perspective view schematically showing the support screw 12A of Modified Example 1. The aircraft wire harness fixing device of Modified Example 1 includes a base, a support screw, a fastener, and a wire harness holder in the same manner as the above-described embodiment, and is mainly different from the above-described embodiment in the structure of the support screw. Hereinafter, the differences from the above-described embodiment will be mainly described, and the same reference numerals will be given to the constituent elements that are the same as those in the above-described embodiment, and repeated explanations will be omitted.

[0067] In the aircraft wire harness fixing device of Modified Example 1, the support screw 12A has a bent section 12A1. In this modified example, the support screw 12A has: a first straight section 12A2 on the proximal side of the bent section 12A1, which extends in a direction perpendicular to the base (not shown); a bent section 12A1 that bends and extends from the front end of the first straight section 12A2; and a second straight section 12A3 on the front end side of the bent section 12A1, which extends linearly from the front end of the bent section 12A1. The angle at which the bent section 12A1 bends is not particularly limited, and for example, it can be 90°.

[0068] In addition, the base, fastener, and wire harness holder of Modified Example 1 may have the same structure as the above-described embodiment.

[0069] <Modified Example 2>

[0070] Figure 7 This is a perspective view schematically showing the support screw 12B of Modified Example 2. The aircraft wire harness fixing device of Modified Example 2 includes a base, a support screw, a fastener, and a wire harness holder in the same manner as the above-described embodiment, and is mainly different from the above-described embodiment in the structure of the support screw and the fastener. Hereinafter, the differences from the above-described embodiment will be mainly described, and the same reference numerals will be given to the constituent elements that are the same as those in the above-described embodiment, and repeated explanations will be omitted.

[0071] In the aircraft wire harness fixing device of Modified Example 2, the support screw 12B extends linearly in a direction perpendicular to the base 11. The support screw 12B has a first part 121 and a second part 122. The first part 121 is provided with an internal thread as a second thread for screwing with an external thread as a first thread. The first part 121 is cylindrical as a whole.

[0072] The second part 122 is located on the front end side of the first part 121. The second part 122 is cylindrical as a whole. An external thread is formed at the front end of the second part 122 as a third thread.

[0073] On the other hand, a fastener (not shown) has an internal thread that is screwed onto the external thread of the third thread. That is, an external thread that mates with the internal thread of the fastener is provided at the front end of the support screw 12B (the second part 122 thereof). The outer diameter of the second part 122 is smaller than the outer diameter of the first part 121.

[0074] In the aircraft wire harness fixing device according to the second modification, in the support screw 12B, in the first part 121 with a relatively large outer diameter, the connection strength between the support screw 12B and the base can be enhanced.

[0075] In addition, the base and the wire harness holder of the second modification may have the same structure as that of the above-described embodiment. In this second modification, a wire harness holder (not shown) is mounted on the front end of the support screw in such a manner as to be clamped between the support screw and the fastener, for example.

[0076] <Modification 3>

[0077] Figure 8 FIG. is a perspective view schematically showing the support screw 12C of the third modification. Figure 9 FIG. is a perspective view schematically showing the base 11C of the third modification. The aircraft wire harness fixing device of the third modification includes a base, a support screw, a fastener, and a wire harness holder in the same manner as the above-described embodiment, and is mainly different from the above-described embodiment in the structures of the base, the support screw, and the fastener. Hereinafter, the differences from the above-described embodiment will be mainly described, and the same reference numerals will be given to the constituent elements that are the same as those of the above-described embodiment, and the repeated description will be omitted.

[0078] In the aircraft wire harness fixing device of the third modification, the base 11C is adhesively bonded to an object to be bonded on the aircraft on the back surface. The base 11C is provided with an internal thread as the first thread. More specifically, the base 11C has a chassis portion 111 and a protrusion 112C formed at the central position of the chassis portion. The first thread is provided on the protrusion 112C.

[0079] The support screw 12C extends linearly in a direction perpendicular to the base 11C. The proximal end ( Figure 8 in this case, the lower end) of the support screw 12C is provided with a second thread that mates with the first thread. The second thread is an external thread.

[0080] In the extending direction ( Figure 9 in this case, the vertical direction) of the support screw 12C, the internal thread of the first thread is provided inside the protrusion 112C.

[0081] The front end ( Figure 8 in this case, the upper end) of the support screw 12C is formed with an external thread as the third thread.

[0082] In the aircraft wire harness fixing device according to the third modification, the support screw 12C has a simple form and is easy to manufacture.

[0083] In addition, the fastener of the third modification example may have the same structure as that of the second modification example described above. The wire harness holder of the third modification example may have the same structure as that of the above-described embodiment.

[0084] <Modification Example 4>

[0085] Figure 10 FIG. is a perspective view schematically showing the base 11D of the fourth modification example. The aircraft wire harness fixing device of the fourth modification example includes a base, a support screw, a fastener, and a wire harness holder in the same manner as the third modification example described above, and is mainly different from the third modification example in the structure of the base. Hereinafter, the differences from the third modification example will be mainly described, and the same components as those in the third modification example will be denoted by the same reference numerals and redundant descriptions will be omitted.

[0086] In the aircraft wire harness fixing device of the fourth modification example, the base 11D is adhesively bonded to an object to be bonded on the aircraft on the back surface. The base 11D is provided with an internal thread as the first thread. More specifically, the base 11D has a chassis portion 111 and a groove 113 formed at the central position of the chassis portion 111. That is, the base 11D is provided with a groove 113 at the center. The groove 113 is formed to be recessed from the front end surface of the chassis portion 111 toward the base end side. When viewed from above, the groove 113 is substantially circular. The first thread is an internal thread formed on the inner peripheral wall of the groove 113.

[0087] According to the aircraft wire harness fixing device of the fourth modification example, in the base 11D, the internal thread of the first thread is formed in the groove 113. Since the base of this modification example has no protrusion and does not interfere with other components, the base does not need to be removed after the wire harness fixing device is removed.

[0088] In addition, the support screw, the fastener, and the wire harness holder of the fourth modification example may have the same structure as those of the third modification example described above.

[0089] <Modification Example 5>

[0090] Figure 11 FIG. is a perspective view schematically showing the support screw 12E of the fifth modification example. The aircraft wire harness fixing device of the fifth modification example includes a base, a support screw, a fastener, and a wire harness holder in the same manner as the third modification example described above, and is mainly different from the third modification example in the structure of the support screw. Hereinafter, the differences from the third modification example will be mainly described.

[0091] In the aircraft wire harness fixing device of Modification 5, the support screw 12E has a bent section 12E1. In this modification, the support screw 12E has: a first straight section 12E2 on the base end side of the bent section 12E1, which extends in a direction perpendicular to the base (not shown); a bent section 12E1 that bends and extends from the front end of the first straight section 12E2; and a second straight section 12E3 on the front end side of the bent section 12E1, which extends linearly from the front end of the bent section 12E1. The angle at which the bent section 12E1 bends is not particularly limited, and for example, it can be 90°.

[0092] In addition, the base, fastener, and wire harness holder of Modification 5 may have the same structure as that of Modification 3 described above.

[0093] <Other Modifications>

[0094] In the above embodiments, the fastener is a bolt member or a nut member, and the fastener is threadedly fastened to the support screw (both ends of the support screw are screwed). However, this is not limited thereto, and the connection between the fastener and the support screw may also adopt other detachable structures known in the art.

[0095] In the above embodiments, the wire harness holder includes an elastic snap ring portion, and tightening portions are provided at the notches at both ends of the snap ring portion. However, this is not limited thereto, and the wire harness holder may also adopt other known clamp structures in the art, or a wire harness mounting structure other than a clamp.

[0096] In addition, in the aircraft wire harness fixing device of the present disclosure, the support screw may also be formed such that the second thread at the base end is an external thread and the third thread at the front end is an internal thread.

[0097] The aircraft wire harness fixing device of the present disclosure can replace the support screw as needed (including the support screws of the first embodiment and Modifications 1 to 5). After the base is bonded, the height and angle of the wire harness holder (wire harness mounting interface) can be adjusted by replacing the support screw without removing the bonded base, avoiding damage to the mounting structure. Especially in composite aircraft, a large number of bonded brackets are used to fix wire harnesses. The aircraft wire harness fixing device of the present disclosure is more convenient for wire harness modification and maintenance, reducing the time for modification and maintenance; there are many forms of support screws, and different forms of support screws can meet the wire harness bonding and fixing requirements in different scenarios.

[0098] When it is necessary to adjust the installation position of the wire harness holder, the support screw can be replaced to adjust the height and angle of the wire harness holder. The support screws have different angles such as vertical and 90°, and support screws with different heights and angles can be customized to meet different installation requirements. In this case, select a suitable support screw according to the need and install it on the base, and then repeat the above steps of installing the wire harness holder and the wire harness.

[0099] The specific embodiments of the present utility model have been specifically described above in conjunction with the accompanying drawings. However, it can be understood that the above description does not limit the present utility model in any form, and the technical features in each embodiment can be combined with each other in any way to form new embodiments. In addition, those skilled in the art can make various other modifications and changes to the present utility model as needed after understanding the above specific embodiments. These do not deviate from the essence of the present utility model.

Claims

1. A wire harness fixing device for an aircraft, characterized in that, Comprising: A base which is bonded to an object to be bonded on an aircraft, and the base is provided with a first thread; A support screw rod, the base end of which is provided with a second thread that mates with the first thread; A fastener which is detachably connected to the support screw rod; And A wire harness holder which is mounted on the front end of the support screw rod via the fastener.

2. The wire harness fixing device for an aircraft according to claim 1, wherein The fastener and the support screw rod are connected by thread fastening.

3. The wire harness fixing device for an aircraft according to claim 2, wherein The screwing direction of the support screw rod relative to the thread fastening of the base is the same as the screwing direction of the fastener relative to the thread fastening of the support screw rod.

4. The wire harness fixing device for an aircraft according to claim 1, wherein The support screw rod extends linearly in a direction perpendicular to the base.

5. The wire harness fixing device for an aircraft according to claim 1, wherein The support screw rod has a bent section.

6. The wire harness fixing device for an aircraft according to claim 1, wherein The fastener is a bolt, The wire harness holder has a snap ring portion for receiving a wire harness, and the snap ring portion is a non-closed shape provided with a notch, At the notches at both ends of the snap ring portion, there are provided tightening portions, and the tightening portions are provided with through holes for the rod portion of the bolt to pass through.

7. The wire harness fixing device for an aircraft according to claim 6, wherein A lock washer is provided between the tightening portion and the head of the bolt and / or between the base and the support screw rod.

8. The wire harness fixing device for an aircraft according to claim 1, wherein The base is provided with a protrusion in the middle, and the first thread is formed on the protrusion.

9. The wire harness fixing device for an aircraft according to claim 1, wherein The base is provided with a groove in the middle, and the first thread is an internal thread formed in the groove.

10. The wire harness fixing device for an aircraft according to claim 1, wherein The first thread is an external thread, The support screw rod has: a first part which is provided with an internal thread as the second thread; and a second part which is located on the front end side of the first part and is provided with an external thread that mates with the fastener, The outer diameter of the second part is smaller than the outer diameter of the first part.

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