Anti-interference wire harness structure

Abstract

The utility model discloses an anti-interference wire harness structure, relates to the technical field of anti-interference wire harnesses, and aims to solve the technical problem of poor anti-interference effect of a single shielding layer of a current anti-interference wire harness structure. The shielding structure comprises a first shielding layer, an insulating sleeve and a second shielding layer, the first shielding layer is sleeved outside the wire harness body, the insulating sleeve is sleeved outside the first shielding layer, the second shielding layer is sleeved outside the insulating sleeve, a sheath is sleeved outside the second shielding layer, an inner cavity is formed in the inner wall of the insulating sleeve, and the insulating sleeve is sleeved outside the inner cavity. And a plurality of groups of limiting rings are arranged in the inner cavity at equal intervals. The anti-interference circuit of the utility model has a stronger anti-interference effect.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-interference wire harnesses, and more particularly to an anti-interference wire harness structure. Background Art

[0002] The wiring harness is the overall service equipment for a certain load source group, such as relay lines, switching devices, control systems, etc. The basic research content of traffic theory is to study the relationship between traffic volume, call loss and wiring harness capacity. Therefore, the wiring harness is an important basic concept in traffic theory. There are many types of wiring harnesses. In an environment with large external interference, anti-interference wiring harnesses are usually used. Anti-interference wiring harnesses usually have a shielding layer set inside. The shielding layer can reflect part of the electromagnetic interference, but it will also absorb part of it and then lead it to the ground. In both cases, part of the energy will still reach the signal wire, but it will be highly attenuated and will not cause interference that can cause problems, thereby achieving an anti-interference effect.

[0003] The existing anti-interference harness structure usually has a single shielding layer or a double-layered shielding layer inside. The double-layered shielding layer has the same effect as the single shielding layer. If the interference intensity is too high, the single shielding layer is not easy to effectively isolate the external interference. After the shielding layer is processed, the interference energy signal reaching the signal wire will be too large, which may cause interference that may cause problems and affect the normal use of the harness. In view of this, we propose an anti-interference harness structure. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, meet practical needs, and provide an anti-interference wiring harness structure to solve the technical problem that the current anti-interference wiring harness structure has a poor anti-interference effect of a single shielding layer.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an anti-interference wiring harness structure, comprising a wiring harness body, a shielding structure arranged on the outside of the wiring harness body, the shielding structure comprising a first shielding layer, an insulating sleeve and a second shielding layer, the first shielding layer being sleeved on the outside of the wiring harness body, the insulating sleeve being sleeved on the outside of the first shielding layer, the second shielding layer being sleeved on the outside of the insulating sleeve, and the outside of the second shielding layer being sleeved with a sheath;

[0006] An inner cavity is arranged on the inner wall of the insulating sleeve, and a plurality of groups of limiting rings are arranged at equal intervals inside the inner cavity.

[0007] The utility model adopts a shielding structure designed, which is composed of a first shielding layer, an insulating sleeve and a second shielding layer. The insulating sleeve is used to insulate and isolate the first shielding layer and the second shielding layer. Then the second shielding layer adopts a connection form of grounding at both ends. Due to the potential difference, a current is induced, thereby generating a magnetic flux that reduces the source magnetic field strength, thereby basically offsetting the voltage induced when there is no outer shielding layer, and reflecting a part of the interference, thereby weakening external interference. The first shielding layer adopts a connection form of grounding at one end and hanging at the other end. Because the external strength has been reduced, it is then discharged as quickly as possible through the first shielding layer, thereby eliminating interference. In addition, by arranging a plurality of groups of convex rings on the outer wall of the insulating sleeve, the distance between the convex rings cannot be too small, so as to avoid the second shielding layer being not tightly woven and wrapped around the insulating sleeve. With the cooperation of the convex rings, the second shielding layer is woven and wrapped around the insulating sleeve. After the sleeve is put on, it will be in a convex form at the convex ring, so that the surface area of ​​the second shielding layer can be increased. As the surface area of ​​the second shielding layer increases, its reflection area for external interference signals will also increase, thereby improving the reflection effect of external interference, thereby further improving the anti-interference performance of the anti-interference wiring harness structure. An inner cavity is opened in the insulating sleeve, and several groups of limiting rings are set in the inner cavity. The arrangement of the limiting rings should be kept relatively dense. Therefore, when the anti-interference wiring harness structure is bent to a certain extent, adjacent limiting rings will press against each other, thereby limiting it and preventing it from continuing to bend. This can effectively avoid the situation where gaps or damage to the first shielding layer or the second shielding layer occur due to excessive bending of the anti-interference wiring harness structure, thereby affecting the shielding effect of the first shielding layer and the second shielding layer against external interference sources.

[0008] Preferably, a plurality of groups of raised rings are arranged at equal intervals on the outside of the insulating sleeve, and the spacing between adjacent raised rings is greater than the spacing between adjacent limiting rings.

[0009] Preferably, the wiring harness body comprises several groups of wire cores, the outside of the wire cores is covered with a tightening sleeve, and the inside of the wire cores is filled with fillers.

[0010] Preferably, the first shielding layer is connected in a manner that one end is grounded and the other end is suspended.

[0011] Preferably, the second shielding layer is connected in a manner of grounding at both ends.

[0012] Preferably, the first shielding layer is an aluminum foil layer, and the second shielding layer is a woven shielding metal mesh.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model adopts a designed shielding structure, which is composed of a first shielding layer, an insulating sleeve and a second shielding layer. The insulating sleeve is used to insulate and isolate the first shielding layer and the second shielding layer. Then the second shielding layer adopts a connection form with both ends grounded. Due to the potential difference, current is induced, thereby generating a magnetic flux that reduces the source magnetic field strength, thereby basically offsetting the voltage induced when there is no outer shielding layer, and reflecting part of the interference, thereby weakening external interference. The first shielding layer adopts a connection form with one end grounded and the other end suspended. Because the external strength has been reduced, the discharge is then carried out as soon as possible through the first shielding layer, thereby eliminating interference, and solving the technical problem that the anti-interference effect of the single shielding layer of the current anti-interference harness structure is not good. Therefore, the utility model has a stronger anti-interference effect.

[0015] 2. The utility model also arranges several groups of convex circles on the outer wall of the insulating sleeve. The distance between the convex circles cannot be too small to avoid the second shielding layer being not tightly woven and wrapped around the insulating sleeve. With the cooperation of the convex circles, after the second shielding layer is woven and wrapped around the insulating sleeve, it will be convex at the convex circles, thereby increasing the surface area of ​​the second shielding layer. As the surface area of ​​the second shielding layer increases, its reflection area for external interference signals will also increase, thereby improving the reflection effect of external interference, thereby further improving the anti-interference performance of the anti-interference harness structure.

[0016] 3. The utility model also opens an inner cavity in the insulating sleeve and sets several groups of limiting rings in the inner cavity. The limiting rings should be arranged densely. Therefore, when the anti-interference wiring harness structure is bent to a certain extent, adjacent limiting rings will press against each other to limit it and prevent it from continuing to bend. This can effectively avoid the occurrence of gaps or damage in the first shielding layer and the second shielding layer due to excessive bending of the anti-interference wiring harness structure, thereby affecting the shielding effect of the first shielding layer and the second shielding layer on external interference sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the insulating sleeve structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the insulating sleeve of the present utility model;

[0020] Figure 4 This is a schematic diagram of the second shielding layer structure of the present invention.

[0021] Description of the numbers in the figure:

[0022] 1. Wire harness body; 101. Wire core; 102. Tightening sleeve; 103. Filler; 2. Shielding structure; 3. Sheath; 4. First shielding layer; 5. Insulating sleeve; 501. Inner cavity; 502. Limiting ring; 503. Raised ring; 6. Second shielding layer. DETAILED DESCRIPTION

[0023] like Figures 1 to 4 As shown, the utility model relates to an anti-interference wiring harness structure, including a wiring harness body 1, a shielding structure 2 is arranged on the outside of the wiring harness body 1, and the shielding structure 2 includes a first shielding layer 4, an insulating sleeve 5 and a second shielding layer 6. The first shielding layer 4 is sleeved on the outside of the wiring harness body 1, the insulating sleeve 5 is sleeved on the outside of the first shielding layer 4, the second shielding layer 6 is sleeved on the outside of the insulating sleeve 5, and the outside of the second shielding layer 6 is sleeved with a sheath 3; the first shielding layer 4 is an aluminum foil layer, and the second shielding layer 6 is a woven shielding metal mesh; the connection method of the first shielding layer 4 is that one end is grounded and the other end is suspended; the connection method of the second shielding layer 6 is that both ends are grounded, the wiring harness body 1, the shielding structure 2 It and the sheath 3 form an anti-interference harness structure, the insulating sleeve 5 is used to insulate and isolate the first shielding layer 4 and the second shielding layer 6, and then the second shielding layer 6 adopts a connection form with both ends grounded. Due to the potential difference, current is induced, thereby generating a magnetic flux that reduces the source magnetic field strength, thereby basically offsetting the voltage induced when there is no outer shielding layer, and reflecting part of the interference, thereby weakening external interference. The first shielding layer 4 adopts a connection form with one end grounded and the other end suspended. Because the external strength has been reduced, it is then discharged as soon as possible through the first shielding layer 4, thereby eliminating the interference, so that the anti-interference harness structure has a better anti-interference effect.

[0024] Specifically, the wiring harness body 1 includes several groups of wire cores 101, the wire cores 101 are covered with a tightening sleeve 102 on the outside, and the wire cores 101 are filled with fillers 103. The wire cores 101 are used for signal transmission, the tightening sleeve 102 is used to fasten the several groups of wire cores 101 into a whole, and the filler 103 is used to fill the gaps between the several groups of wire cores 101 and the tightening sleeve 102.

[0025] In an embodiment of the present utility model, an inner wall of the insulating sleeve 5 is arranged with an inner cavity 501, and a plurality of groups of limiting rings 502 are arranged at equal intervals inside the inner cavity 501. The limiting rings 502 should be arranged relatively densely. Therefore, when the anti-interference wiring harness structure is bent to a certain extent, adjacent limiting rings 502 will press against each other to limit it and prevent it from continuing to bend. This can effectively avoid the occurrence of gaps or damage in the first shielding layer 4 and the second shielding layer 6 due to excessive bending of the anti-interference wiring harness structure, thereby affecting the shielding effect of the first shielding layer 4 and the second shielding layer 6 on external interference sources.

[0026] In an embodiment of the present utility model, several groups of raised circles 503 are arranged at equal intervals on the outside of the insulating sleeve 5, and the spacing between adjacent raised circles 503 is greater than the spacing between adjacent limiting circles 502. The distance between the raised circles 503 cannot be too small to avoid the second shielding layer 6 being not woven and wrapped densely on the insulating sleeve 5. With the cooperation of the raised circles 503, after the second shielding layer 6 is woven and wrapped on the insulating sleeve 5, it will be in a convex form at the raised circles 503, so that the surface area of ​​the second shielding layer 6 can be increased. As the surface area of ​​the second shielding layer 6 increases, its reflection area for external interference signals will also increase, thereby improving the reflection effect of external interference, thereby further improving the anti-interference performance of the anti-interference harness structure.

[0027] Working principle: This embodiment provides an anti-interference wiring harness structure. First, the wiring harness body 1, the shielding structure 2 and the sheath 3 constitute the anti-interference wiring harness structure. The insulating sleeve 5 is used to insulate and isolate the first shielding layer 4 and the second shielding layer 6. Then, the second shielding layer 6 adopts a connection form with both ends grounded. Due to the potential difference, a current is induced, thereby generating a magnetic flux that reduces the source magnetic field strength, thereby basically offsetting the voltage induced when there is no outer shielding layer, and reflecting part of the interference, thereby weakening external interference. The first shielding layer 4 adopts a connection form with one end grounded and the other end suspended. Because the external strength has been reduced, the discharge is then carried out as quickly as possible through the first shielding layer 4, thereby eliminating the interference, so that the anti-interference wiring harness structure has a better anti-interference effect;

[0028] Secondly, the limiting rings 502 should be arranged closely together, so when the anti-interference harness structure is bent to a certain degree, adjacent limiting rings 502 will press against each other, thereby limiting the structure and preventing it from bending further. This can effectively prevent the first shielding layer 4 and the second shielding layer 6 from being damaged due to excessive bending of the anti-interference harness structure, thereby affecting the shielding effect of the first shielding layer 4 and the second shielding layer 6 against external interference sources.

[0029] Finally, the distance between the raised circles 503 cannot be too small to avoid the second shielding layer 6 from being not woven densely enough on the insulating sleeve 5. With the cooperation of the raised circles 503, after the second shielding layer 6 is woven and wrapped on the insulating sleeve 5, it will be in a convex form at the raised circles 503, thereby increasing the surface area of ​​the second shielding layer 6. As the surface area of ​​the second shielding layer 6 increases, its reflection area for external interference signals will also increase, thereby improving the reflection effect of external interference, thereby further improving the anti-interference performance of the anti-interference harness structure.

[0030] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. An anti-interference harness structure, characterized in that: The invention comprises a wiring harness body (1), wherein a shielding structure (2) is arranged outside the wiring harness body (1), and the shielding structure (2) comprises a first shielding layer (4), an insulating sleeve (5), and a second shielding layer (6), wherein the first shielding layer (4) is sleeved outside the wiring harness body (1), the insulating sleeve (5) is sleeved outside the first shielding layer (4), the second shielding layer (6) is sleeved outside the insulating sleeve (5), and the second shielding layer (6) is sleeved outside with a sheath (3); An inner cavity (501) is arranged on the inner wall of the insulating sleeve (5), and a plurality of groups of limiting rings (502) are arranged at equal intervals inside the inner cavity (501).

2. The anti-interference wiring harness structure according to claim 1, characterized in that: Several groups of raised rings (503) are arranged at equal intervals on the outside of the insulating sleeve (5), and the spacing between adjacent raised rings (503) is greater than the spacing between adjacent limiting rings (502).

3. The anti-interference wiring harness structure according to claim 1, characterized in that: The wire harness body (1) comprises a plurality of groups of wire cores (101), the outer portion of the wire cores (101) is covered with a tightening sleeve (102), and the inner portion of the wire cores (101) is filled with a filler (103).

4. The anti-interference wiring harness structure according to claim 1, characterized in that: The first shielding layer (4) is connected in a manner that one end is grounded and the other end is suspended.

5. The anti-interference wiring harness structure according to claim 1, characterized in that: The second shielding layer (6) is connected in a manner of grounding at both ends.

6. The anti-interference wiring harness structure according to claim 1, characterized in that: The first shielding layer (4) is an aluminum foil layer, and the second shielding layer (6) is a woven shielding metal mesh.

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