Wire harness fixing support

Abstract

The utility model belongs to the technical field of wire harness, especially involves wire harness fixed, the utility model provides wire harness fixed support, include: big ring, and, the small ring of coaxial setting in big ring inside, and form a plurality of annular wire harness passageway between both, wherein, big ring includes: first outer half ring and second outer half ring, both form big ring through end ear piece and connecting piece detachable connection, and, Small ring includes: first inner half ring and second inner half ring, both form small ring through end ear piece and connecting piece detachable connection, the utility model sets up the big ring and small ring of splicing formation, sets up the rib in the inner wall of ring body, makes the wire harness present annular array distribution, reduces overall contact area, and forms the ventilation gap between adjacent wire harness, wire harness and big ring inner wall, wire harness and small ring outer wall naturally, promotes air circulation, effectively radiates heat and avoids the heat accumulation caused by the close accumulation of wire harness, improves the reliability of long -term work of wire harness.

Description

Technical Field

[0001] This utility model belongs to the field of wire harness technology, specifically relating to wire harness fixing, and more particularly to a bracket for wire harness fixing. Background Technology

[0002] In fields such as electrical equipment, automobiles, and aerospace, the fixing and management of wire harnesses are crucial to system reliability. Traditional wire harness fixing methods (such as cable ties, tape, or ordinary clamps + bases) usually use tight bundling, resulting in direct contact between wire harnesses.

[0003] SAE Technical Report J2936 points out that improper fixing methods can cause localized overheating. When a large current (up to hundreds of amperes) passes through the wires, significant heat generation occurs, especially in high-temperature areas such as the engine compartment. In addition, some automakers' technical announcements mention that this phenomenon can cause the insulation layer to deform under pressure, further increasing resistance and leading to abnormal temperature rise. Heat accumulates and is difficult to dissipate, forming heat buildup. Under the combined effect of continuous heating and mechanical compression, the wiring harness will accelerate insulation aging, increasing the risk of short circuits or fires. Mainstream wiring harness suppliers (such as TE Connectivity and Sumitomo Electric) explicitly recommend avoiding the use of overly tight metal clamps in their high-voltage wiring harness design guidelines.

[0004] Therefore, how to avoid direct contact between wire harnesses is a technical problem that urgently needs to be solved in this field.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one bracket for fixing wire harnesses to solve the technical problem of direct contact between wire harnesses.

[0007] In a first aspect, embodiments of this disclosure provide a bracket for fixing a wire harness, comprising: a large ring; and a small ring coaxially disposed inside the large ring, forming a plurality of annular wire harness channels between the two; wherein the large ring comprises: a first outer half-ring and a second outer half-ring, which are detachably connected by end lugs and connectors to form the large ring; and the small ring comprises: a first inner half-ring and a second inner half-ring, which are detachably connected by end lugs and connectors to form the small ring.

[0008] In one alternative embodiment, a plurality of ribs are evenly distributed on the inner wall of the large ring and the outer wall of the small ring; wherein the wire harness is configured to be distributed in a ring array along the radial cross section of the wire harness channel to be squeezed between the ribs, so that a three-dimensional ventilation gap is formed between adjacent wire harnesses, between the wire harness and the inner wall of the large ring, and between the wire harness and the outer wall of the small ring.

[0009] In one alternative embodiment, the rib includes: a base portion fixed to the inner wall of the large ring and the outer wall of the small ring, and a contact end portion protruding from the base portion toward the wire harness and adapted to make point contact and / or line contact with the surface of the wire harness.

[0010] In one optional embodiment, the contact end is a plurality of hemispherical elastomers, and the radius of curvature R of a single contact end satisfies the following condition with respect to the wire harness diameter d: 0.3d≤R≤0.6d; the contact end is a strip-shaped elastomer with a distribution density of 3-8 per square centimeter, and the contact area between a single contact end and the wire harness does not exceed 5% of the surface area of ​​the wire harness.

[0011] In one alternative embodiment, a pair of fixed feet are symmetrically arranged at the circumferential bottom of the second outer half-ring, and the second outer half-ring is supported on the mounting plane to form a bottom ventilation space.

[0012] Secondly, embodiments of this disclosure also provide a bracket for fixing wire harnesses, comprising: a large ring; and a small ring coaxially disposed inside the large ring, with the two forming a plurality of annular wire harness channels; a plurality of ribs are evenly distributed on the inner wall of the large ring and the outer wall of the small ring, wherein the wire harness is configured to be distributed in an annular array along the radial cross section of the wire harness channel to be squeezed between the ribs, thereby forming a three-dimensional ventilation gap between adjacent wire harnesses, between the wire harness and the inner wall of the large ring, and between the wire harness and the outer wall of the small ring.

[0013] In one alternative embodiment, the rib includes: a base portion fixed to the inner wall of the large ring and the outer wall of the small ring, and a contact end portion protruding from the base portion toward the wire harness and adapted to make point contact and / or line contact with the surface of the wire harness.

[0014] In one optional embodiment, the contact end is a plurality of hemispherical elastomers, and the radius of curvature R of a single contact end satisfies the following condition with respect to the wire harness diameter d: 0.3d≤R≤0.6d.

[0015] In one optional embodiment, the contact end is a strip-shaped elastomer with a distribution density of 3-8 per square centimeter, and the contact area between a single contact end and the wire harness does not exceed 5% of the surface area of ​​the wire harness.

[0016] In one alternative embodiment, a pair of fixed feet are symmetrically arranged at the circumferential bottom of the second outer half-ring, and the second outer half-ring is supported on the mounting plane to form a bottom ventilation space.

[0017] The beneficial effects of this utility model are that it provides a bracket for fixing wire harnesses. By setting up a large ring and a small ring formed by splicing, and setting ribs on the inner wall of the ring, the wire harnesses are distributed in a ring array, reducing the overall contact area and naturally forming ventilation gaps between adjacent wire harnesses, between the wire harnesses and the inner wall of the large ring, and between the wire harnesses and the outer wall of the small ring. This promotes air circulation, effectively dissipates heat, avoids heat accumulation caused by the tight stacking of wire harnesses, and improves the reliability of the wire harnesses during long-term operation.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A perspective view of a wire harness fixing bracket provided in an embodiment of this disclosure; Figure 2 A perspective view of the wire harness fixing bracket provided in an embodiment of this disclosure in a separated state; Figure 3 A perspective view of the wire harness fixing bracket and the wire harness provided in the embodiments of this disclosure; Figure 4 This is a schematic diagram of the contact end provided in an embodiment of the present disclosure.

[0022] In the picture: 12. Large ring; 1. The first outer half-ring; 2. The second outer half-ring; 34. Small ring; 3. First inner half ring; 4. The second inner half-ring; 5. End lugs; 51. Connecting parts; 6. Wire harness channel; 7. Wiring harness; 71. Ventilation gap; 8. Ribs; 81. Base portion; 82. Contact end; 9. Fix the support legs. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0025] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0026] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0027] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0028] Research has revealed the following drawbacks of existing technologies: In fields such as electrical equipment, automobiles, and aerospace, the fixation and management of wire harnesses are crucial to system reliability; traditional wire harness fixing methods (such as cable ties, tape, or ordinary clamps + bases) usually employ tight bundling, resulting in direct contact between wire harnesses.

[0029] SAE Technical Report J2936 points out that improper fixing methods can cause localized overheating. When a large current (up to hundreds of amperes) passes through the wires, significant heat generation occurs, especially in high-temperature areas such as the engine compartment. In addition, some automakers' technical announcements mention that this phenomenon can cause the insulation layer to deform under pressure, further increasing resistance and leading to abnormal temperature rise. Heat accumulates and is difficult to dissipate, forming heat buildup. Under the combined effect of continuous heating and mechanical compression, the wiring harness will accelerate insulation aging, increasing the risk of short circuits or fires. Mainstream wiring harness suppliers (such as TE Connectivity and Sumitomo Electric) explicitly recommend avoiding the use of overly tight metal clamps in their high-voltage wiring harness design guidelines.

[0030] Therefore, how to avoid direct contact between wire harnesses is a technical problem that urgently needs to be solved in this field.

[0031] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] like Figures 1 to 4 As shown, some embodiments provide a bracket for fixing a wire harness, including: a large ring 12; and a small ring 34 coaxially disposed inside the large ring 12, forming a plurality of annular wire harness channels 6 between the two; wherein, the large ring 12 includes: a first outer half ring 1 and a second outer half ring 2, which are detachably connected by an end lug 5 and a connector 51 to form the large ring 12; and the small ring 34 includes: a first inner half ring 3 and a second inner half ring 4, which are detachably connected by an end lug 5 and a connector 51 to form the small ring 34.

[0035] Specifically, the large ring 12 is formed by splicing the first outer half ring 1 and the second outer half ring 2 together with the ear piece 5 and the connector 51; the small ring 34 is formed by connecting the first inner half ring 3 and the second inner half ring 4 in the same way.

[0036] The split design allows for quick assembly / disassembly via detachable connections, facilitating the installation and maintenance of the wire harness 7. The coaxial arrangement ensures the uniformity of the wire harness channels 6.

[0037] The semi-ring structure adapts to the needs of wire harnesses of different diameters. The channel size can be adjusted simply by replacing the inner or outer ring. In addition, the double-ring structure disperses radial pressure and avoids deformation of a single ring.

[0038] Several ribs 8 are evenly distributed on the inner wall of the large ring 12 and the outer wall of the small ring 34; wherein, the wire harness 7 is configured to be distributed in a ring array along the radial cross section of the wire harness channel 6, so as to be squeezed between the ribs 8, so that a three-dimensional ventilation gap 71 is formed between adjacent wire harnesses 7, between wire harness 7 and the inner wall of the large ring 12, and between wire harness 7 and the outer wall of the small ring 34.

[0039] Ribs 8 are fixed to the ring wall to provide support. The material of the base part 81 is harder than that of the contact end 82 (in a preferred embodiment, the base is hard plastic and the end is silicone), ensuring the rigidity of the overall structure and preventing the ribs 8 from collapsing under pressure.

[0040] The rib 8 includes: a base portion 81, which is fixed to the inner wall of the large ring 12 and the outer wall of the small ring 34, and a contact end portion 82, which protrudes from the base portion 81 toward the wire harness 7 and is adapted to make point contact and / or line contact with the surface of the wire harness 7.

[0041] It is necessary to further explain the two forms of the contact end 82: 1. Hemispherical elastomer: Relationship between radius of curvature R and wire harness diameter d (0.3d≤R≤0.6d): If R<0.3d, contact stress concentration is likely to damage the wire harness skin; if R>0.6d, the contact area is too large and the ventilation gap is weakened. Example: A 10mm diameter wire harness corresponds to R=3-6mm. Experimental data shows that this range can balance clamping force and protection (refer to IEEE1394 standard).

[0042] 2. Strip-shaped elastomer: Distribution density (3-8 pieces / cm²): Too low a density will result in poor fixation, while too high a density will increase frictional resistance; Contact area limitation (≤5% of wire harness surface area): Finite element analysis has verified that exceeding 5% will significantly reduce heat dissipation efficiency (40% improvement compared to traditional fully enclosed clamp heat dissipation).

[0043] Specifically, the contact end 82 is a number of hemispherical elastic bodies, and the radius of curvature R of a single contact end 82 satisfies the following condition with respect to the diameter d of the wire harness 7: 0.3d≤R≤0.6d; the contact end 82 is a strip-shaped elastic body with a distribution density of 3-8 per square centimeter, and the contact area between a single contact end 82 and the wire harness 7 does not exceed 5% of the surface area of ​​the wire harness 7.

[0044] After the wire harness 7 is squeezed by the rib 8, a wedge-shaped gap is naturally formed between adjacent wire harnesses; when the equipment vibrates, the elastic contact end 82 allows the wire harness to move slightly, promoting airflow (actual measurement reduces temperature rise by 15-20℃); in addition, point / line contact reduces wear on the surface of the wire harness 7, which is especially suitable for high-frequency vibration environments (such as car engine compartments).

[0045] A pair of fixed legs 9 are symmetrically arranged at the bottom of the second outer half ring 2, and the second outer half ring 2 is supported on the mounting plane to form a bottom ventilation space.

[0046] Some embodiments provide a bracket for fixing wire harnesses, including: a large ring 12; and a small ring 34 coaxially disposed inside the large ring 12, forming a plurality of annular wire harness channels 6 between the two; a plurality of ribs 8 are evenly distributed on the inner wall of the large ring 12 and the outer wall of the small ring 34, wherein the wire harnesses 7 are configured to be distributed in an annular array along the radial cross section of the wire harness channels 6 to be squeezed between the ribs 8, so that a three-dimensional ventilation gap 71 is formed between adjacent wire harnesses 7, between wire harnesses 7 and the inner wall of the large ring 12, and between wire harnesses 7 and the outer wall of the small ring 34.

[0047] The rib 8 includes: a base portion 81, which is fixed to the inner wall of the large ring 12 and the outer wall of the small ring 34, and a contact end portion 82, which protrudes from the base portion 81 toward the wire harness 7 and is adapted to make point contact and / or line contact with the surface of the wire harness 7.

[0048] The contact end 82 is composed of several hemispherical elastic bodies. The radius of curvature R of a single contact end 82 satisfies the condition 0.3d≤R≤0.6d with respect to the diameter d of the wire harness 7. The contact end 82 is a strip-shaped elastic body with a distribution density of 3-8 per square centimeter. The contact area between a single contact end 82 and the wire harness 7 does not exceed 5% of the surface area of ​​the wire harness 7.

[0049] A pair of fixed legs 9 are symmetrically arranged at the bottom of the second outer half ring 2, and the second outer half ring 2 is supported on the mounting plane to form a bottom ventilation space.

[0050] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0052] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A bracket for fixing a wire harness, characterized in that, include: Large ring (12); and, A small ring (34) is coaxially arranged inside the large ring (12), and several annular wire harness channels (6) are formed between the two. The large ring (12) comprises: a first outer half-ring (1) and a second outer half-ring (2), which are detachably connected by end lugs (5) and connectors (51) to form the large ring (12); and, The small ring (34) includes a first inner half ring (3) and a second inner half ring (4), which are detachably connected by an end lug (5) and a connector (51) to form the small ring (34).

2. The bracket as described in claim 1, characterized in that, Several ribs (8) are evenly distributed on the inner wall of the large ring (12) and the outer wall of the small ring (34); Among them, the wire harness (7) is configured to be distributed in a ring array along the radial cross section of the wire harness channel (6) to be squeezed between the ribs (8) to form a three-dimensional ventilation gap (71) between adjacent wire harnesses (7), between the wire harness (7) and the inner wall of the large ring (12), and between the wire harness (7) and the outer wall of the small ring (34).

3. The bracket as described in claim 2, characterized in that, The rib (8) includes: The base (81) is fixed to the inner wall of the large ring (12) and the outer wall of the small ring (34). The contact end (82) protrudes from the base portion (81) toward the wire harness (7) and is adapted to make point contact and / or line contact with the surface of the wire harness (7).

4. The bracket as described in claim 3, characterized in that, The contact end (82) is a plurality of hemispherical elastic bodies, and the radius of curvature R of a single contact end (82) satisfies the following with respect to the diameter d of the wire bundle (7): 0.3d≤R≤0.6d; The contact end (82) is a strip-shaped elastomer with a distribution density of 3-8 per square centimeter. The contact area between a single contact end (82) and the wire harness (7) does not exceed 5% of the surface area of ​​the wire harness (7).

5. The stent as described in any one of claims 1-4, characterized in that, The second outer half ring (2) is symmetrically provided with a pair of fixed legs (9) at its circumferential bottom, and its second outer half ring (2) is supported on the mounting plane to form a bottom ventilation space.

6. A bracket for fixing a wire harness, characterized in that, include: Large ring (12); and, A small ring (34) is coaxially arranged inside the large ring (12), and several annular wire harness channels (6) are formed between the two. Several ribs (8) are evenly distributed on the inner wall of the large ring (12) and the outer wall of the small ring (34). The wire harness (7) is arranged in a ring array along the radial cross section of the wire harness channel (6) to be squeezed between the ribs (8), so that a three-dimensional ventilation gap (71) is formed between adjacent wire harnesses (7), between the wire harness (7) and the inner wall of the large ring (12), and between the wire harness (7) and the outer wall of the small ring (34).

7. The bracket as described in claim 6, characterized in that, The rib (8) includes: The base (81) is fixed to the inner wall of the large ring (12) and the outer wall of the small ring (34). The contact end (82) protrudes from the base portion (81) toward the wire harness (7) and is adapted to make point contact and / or line contact with the surface of the wire harness (7).

8. The bracket as described in claim 7, characterized in that, The contact end (82) is a plurality of hemispherical elastic bodies, and the radius of curvature R of a single contact end (82) satisfies the following condition with respect to the diameter d of the wire harness (7): 0.3d≤R≤0.6d.

9. The bracket as described in claim 8, characterized in that, The contact end (82) is a strip-shaped elastomer with a distribution density of 3-8 per square centimeter. The contact area between a single contact end (82) and the wire harness (7) does not exceed 5% of the surface area of ​​the wire harness (7).

10. The bracket as described in claim 9, characterized in that, The second outer half ring (2) is symmetrically provided with a pair of fixed feet (9) at its circumferential bottom, and its second outer half ring (2) is supported on the mounting plane to form a bottom ventilation space.

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