Bumper wire harness fixing support

Abstract

The utility model provides a bumper wire harness fixing support which comprises a support bottom plate, and a plurality of longitudinal grooves evenly distributed in the width direction of the support bottom plate at intervals and a plurality of transverse grooves evenly distributed in the height direction of the support bottom plate at intervals are formed in the upper surface of the support bottom plate. Furthermore, a plurality of convex parts distributed in a rectangular dot matrix grid form and a plurality of bending deformation areas are formed on the upper surface of the bracket bottom plate, so that the bracket bottom plate can form an irregular curved surface shape under the condition that the bracket bottom plate is subjected to external force, and then the bracket bottom plate is attached to different parts of the inner surface of the bumper mask; the lower surface of the support bottom plate is covered with gum used for being pasted and fixed to the inner surface of a bumper mask, and the upper surface of the support bottom plate vertically extends upwards to form a rib piece used for being clamped by a wire harness clamping piece of a bumper wire harness. The bracket can be bent along with the matching surface of the inner surface of the bumper mask, and can be fixed on a plurality of parts with any special shapes on the inner surface of the bumper mask.

Description

Technical Field

[0001] The utility model belongs to the field of automobile component fixing structures and relates to a bumper harness fixing bracket. Background Art

[0002] The electrical wiring harness in the bumper assembly is the bumper harness, which is used to connect various electrical components to the plug connector of the vehicle body. It is supplied with the bumper assembly, so the electrical wiring harness, i.e. the bumper harness, needs to be firmly fixed to the bumper. At present, the conventional fixing method adopted by most models is as follows Figure 1 As shown, the electrical wiring harness, i.e. the bumper wiring harness, is usually fixed on the bumper wiring harness by a wiring harness clip structure with clamping and snap-on functions that comes with a set and is clamped and fixed on the inwardly extending bumper single-layer rib sheet on the inner surface of the bumper mask, and the spacing between the fixing points is between 120-200mm.

[0003] However, due to factors such as the shape, craftsmanship and internal space of some models, the bumper cover of some models cannot provide a single-layer bumper rib structure for the bumper wire harness to be clamped and fixed by the wire harness clips, or many positions on the inner surface of the bumper cover cannot provide a single-layer bumper rib structure, resulting in a certain point of the bumper wire harness being unable to be clamped and fixed by the wire harness clip, resulting in uneven spacing between fixing points, poor fixing effect, and bumper wire harness falling off. Utility Model Content

[0004] In order to overcome the problems existing in the prior art, the utility model provides a bumper wire harness fixing bracket.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] A bumper wire harness fixing bracket is fixedly connected to a wire harness clip of a bumper wire harness and is used to fix the bumper wire harness on the inner surface of a bumper mask. The bracket comprises a rectangular bracket base plate. The upper surface of the bracket base plate is provided with a plurality of longitudinal grooves evenly spaced along the width direction of the bracket base plate and a plurality of transverse grooves evenly spaced along the height direction of the bracket base plate. All longitudinal grooves and transverse grooves form a plurality of protrusions distributed in the form of a rectangular dot matrix grid on the upper surface of the bracket base plate. The bottom surface of each transverse groove and the portion between the bottom surface of each longitudinal groove and the lower surface of the bracket base plate form a bending deformation zone. The bending deformation zone enables the bracket base plate to form an irregular curved surface shape under external force and thus fit with different portions of the inner surface of the bumper mask. The lower surface of the bracket base plate is covered with adhesive for bonding and fixing to the inner surface of the bumper mask. A rib sheet for clamping the wire harness clip of the bumper wire harness extends vertically upward from the upper surface of the bracket base plate.

[0007] Further technical solutions include:

[0008] The transverse groove and the longitudinal groove are arc-shaped grooves with arc-shaped cross sections, and the raised portion is a raised shape with a rectangular top surface and four side surfaces being arc-shaped surfaces that are bent inwards.

[0009] There are plate-shaped reinforcing ribs between the two side surfaces of the rib sheet and the upper surface of the bracket bottom plate.

[0010] The reinforcing ribs are in the shape of triangular plates.

[0011] The bracket base, ribs and reinforcing ribs are all made of polypropylene material with a density of 1.0±0.02g / cm 3 , bending strength ≥ 22MPa, bending elastic modulus ≥ 1700Mpa.

[0012] The overall thickness of the bracket base, that is, the distance between the lower surface of the bracket base and the top surface of the raised portion, is 2 mm, the diameter of the arc grooves of the transverse grooves and the longitudinal grooves is 6 mm, and the height of the lowest point of the bending deformation zone, that is, the distance from the lowest point of the arc groove to the lower surface of the bracket base, is 0.7 mm.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model provides a bumper harness fixing bracket, which can match the smooth curved surface of the inner surface of the bumper mask through its special structure. The specific effects are as follows:

[0015] (1) The utility model provides a bumper harness fixing bracket, which has a simple structure and is made of PP (polypropylene) with a large bending modulus, good toughness, and low material cost.

[0016] (2) It is not limited by factors such as matching part shape, process, and space, and can be used in multiple car models. The mold can be invested once, and there is no need to open a new mold, thus reducing the cost per piece.

[0017] (3) The structure of multiple raised portions and bending deformation zones distributed in the form of a rectangular dot grid formed by its own unique longitudinal grooves and transverse grooves can tolerate the curvature of the smooth curved surface of the inner surface of the bumper mask, and can be fixed on most special curved surface shapes of the inner surface of the bumper mask by bending with the matching surface of the inner surface of the bumper mask.

[0018] (4) The bracket base plate and the inner surface of the bumper mask are fixed with adhesive, which is easy to operate and greatly reduces manual operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] Figure 1The present invention is a schematic diagram of the structure in which a bumper wire harness is clamped and fixed on a single-layer rib sheet of a bumper on the inner surface of a bumper mask by a wire harness clip in the prior art.

[0021] Figure 2 The utility model provides a schematic structural diagram of a bumper wiring harness fixing bracket.

[0022] Figure 3 The utility model provides a left side view of a bumper wire harness fixing bracket.

[0023] Figure 4 The utility model provides a front view of a bumper wire harness fixing bracket.

[0024] Figure 5 The utility model provides a bottom view of a bumper wire harness fixing bracket.

[0025] In the figure: 1. Bumper wiring harness, 2. Bumper mask, 3. Wire harness clip, 4. Bumper single-layer rib, 5. Bracket bottom plate, 6. Longitudinal groove, 7. Transverse groove, 8. Raised part, 9. Rib, 10. Reinforcement rib, 11. Adhesive, 12. Bending deformation area. DETAILED DESCRIPTION

[0026] The utility model is described in detail below in conjunction with the accompanying drawings:

[0027] The utility model provides a bumper harness fixing bracket, which is fixedly connected to a harness clip 3 of a bumper harness 1 and is used to fix the bumper harness 1 on the inner surface of a bumper mask 2. Figures 2 to 5 As shown, it includes a rectangular bracket base plate 5, and the upper surface of the bracket base plate 5 is provided with a plurality of longitudinal grooves 6 evenly distributed along the width direction of the bracket base plate 5 and a plurality of transverse grooves 7 evenly distributed along the height direction of the bracket base plate 5. All the longitudinal grooves 6 and the transverse grooves 7 form a plurality of protrusions 8 distributed in the form of a rectangular dot matrix grid on the upper surface of the bracket base plate 5. The bottom surface of each transverse groove 7 and the portion between the bottom surface of each longitudinal groove 6 and the lower surface of the bracket base plate 5 form a bending deformation zone 12. The bending deformation zone 12 can enable the bracket base plate 5 to form an irregular curved shape under external force and then fit with different portions of the inner surface of the bumper mask 2. The lower surface of the bracket base plate 5 is covered with a backing adhesive 11 for bonding and fixing with the inner surface of the bumper mask. A rib sheet 9 for clamping the harness clip 3 of the bumper harness 1 extends vertically upward from the upper surface of the bracket base plate 5.

[0028] In this embodiment, the transverse groove 7 and the longitudinal groove 6 are arc-shaped grooves with arc-shaped cross-sections, and the protrusion 8 is a protrusion with a rectangular top surface and four side surfaces that are inwardly curved arc surfaces.

[0029] In this embodiment, there are plate-shaped reinforcing ribs 10 between the two side surfaces of the rib sheet 9 and the upper surface of the bracket bottom plate 5. The reinforcing ribs 10 are triangular plate-shaped.

[0030] In this embodiment, the bracket bottom plate 5, the rib sheet 9 and the reinforcing rib 10 are all made of polypropylene material, and the density of the material is 1.0±0.02g / cm 3 , bending strength ≥ 22MPa, bending elastic modulus ≥ 1700Mpa. Therefore, it has good toughness and ductility, which is conducive to the shape of the fitting surface.

[0031] Taking into account factors such as cost, manufacturing process, shape, internal space, etc., through repeated simulation tests, trial production of physical sample tests, finished product assembly tests, etc., we believe that when the overall thickness of the bracket base plate 5, that is, the distance between the lower surface of the bracket base plate 5 and the top surface of the protrusion 8 is 2mm, the diameter of the arc groove of the transverse groove 7 and the longitudinal groove 6 is 6mm, and the height of the lowest point of the bending deformation zone 12, that is, the distance from the lowest point of the arc groove to the lower surface of the bracket base plate 5 is 0.7mm, it is beneficial for the bracket to bend and deform with the bonding surface, and the overall fixing effect and stability are better.

[0032] In this embodiment, the lower surface of the bracket base plate 5 and the inner surface of the bumper mask 2 are fixed by a bonding fixing scheme in which a layer of adhesive 11 is covered on the lower surface of the bracket base plate 5. The performance of the adhesive 11 is selected to be similar to the performance index of the adhesive tape model GT6008 produced by 3M Company, and it is required that the bracket base 5 and the inner surface of the bumper mask 2 are attached and assembled under the conditions of temperature (23±2)℃ and humidity (50±5)%. Figure 3 An external force of 49 N is continuously applied in the f direction for 10 seconds, and the bracket base plate 5 does not separate from the bumper cover 2.

[0033] After the product is shipped, the parts are tested and verified by road conditions. It is strong and reliable and is applied to multiple mass-produced models.

Claims

1. A bumper harness fixing bracket, fixedly connected to a harness clip (3) of a bumper harness (1), used to fix the bumper harness (1) on the inner surface of a bumper mask (2), characterized in that: The invention comprises a rectangular support base plate (5), wherein the upper surface of the support base plate (5) is provided with a plurality of longitudinal grooves (6) evenly distributed along the width direction of the support base plate (5) and a plurality of transverse grooves (7) evenly distributed along the height direction of the support base plate (5), wherein all the longitudinal grooves (6) and the transverse grooves (7) form a plurality of protrusions (8) distributed in the form of a rectangular dot matrix on the upper surface of the support base plate (5), and the bottom surface of each transverse groove (7) and the bottom surface of each longitudinal groove (6) are aligned with the support base plate. A bending deformation zone (12) is formed between the lower surfaces of the plates (5), and the bending deformation zone (12) can enable the bracket base plate (5) to form an irregular curved surface shape under external force and thus fit with different parts of the inner surface of the bumper mask (2). The lower surface of the bracket base plate (5) is covered with a backing adhesive (11) for bonding and fixing with the inner surface of the bumper mask (2), and a rib sheet (9) for clamping the wire harness clamp (3) of the bumper wire harness (1) extends vertically upward from the upper surface of the bracket base plate (5).

2. A bumper harness fixing bracket according to claim 1, characterized in that: The transverse groove (7) and the longitudinal groove (6) are arc-shaped grooves with arc-shaped cross-sections, and the raised portion (8) is a raised shape with a rectangular top surface and four side surfaces being inwardly curved arc surfaces.

3. A bumper harness fixing bracket according to claim 1 or 2, characterized in that: Plate-shaped reinforcing ribs (10) are provided between the two side surfaces of the rib sheet (9) and the upper surface of the bracket bottom plate (5).

4. A bumper harness fixing bracket according to claim 3, characterized in that: The reinforcing rib (10) is in the shape of a triangular plate.

5. A bumper harness fixing bracket according to claim 1 or 2, characterized in that: The support bottom plate (5), the rib sheet (9) and the reinforcing rib (10) are all made of polypropylene material, and the density of the material is 1.0±0.02g / cm 3 , bending strength ≥ 22MPa, bending elastic modulus ≥ 1700Mpa.

6. The bumper harness fixing bracket according to claim 2, characterized in that: The overall thickness of the bracket bottom plate (5), i.e., the distance between the lower surface of the bracket bottom plate (5) and the top surface of the protrusion (8), is 2 mm, the diameter of the arc grooves of the transverse groove (7) and the longitudinal groove (6) is 6 mm, and the height of the lowest point of the bending deformation zone (12), i.e., the distance between the lowest point of the arc groove and the lower surface of the bracket bottom plate (5), is 0.7 mm.

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