Modular design of replaceable plastic parts fixing structure

Abstract

The present invention relates to the field of automobile manufacturing, and discloses a modularly designed replaceable plastic part fixing structure, including a buckle and a buckle groove arranged on a guard plate, and also including two first inclined protrusions symmetrically arranged on the notch of the buckle groove, the inclined surface of the first inclined protrusion extends toward the inside of the buckle groove, and forms a first abutment surface with the groove wall of the buckle groove, the buckle includes an inverted U-shaped buckle body, and the outer sides of the two arm ends of the buckle body are provided with second inclined protrusions, and the inclined surface of the second inclined protrusion extends toward the outer side of the buckle body and upward, and forms a second abutment surface with the two arms of the buckle body. The modularly designed replaceable plastic part fixing structure of the present invention can replace the buckle separately when it is damaged or broken, which greatly reduces the cost.

Description

Technical Field

[0001] The present invention relates to the field of automobile manufacturing, and in particular to a modularly designed replaceable plastic part fixing structure. Background Technology

[0002] Automobile interior and exterior trims need to meet the fixed strength requirements and not fall off or break when subjected to certain external forces. For example, when a car rear-ends at a very slow speed and causes a slight impact on the bumper, this force may leave the overall appearance of the bumper intact, with only scratches on the surface, but the buckle that fixes the bumper may have broken. Similarly, when the outer guard plate of a car seat is subjected to an external force in the Y direction, while the outer shape of the guard plate remains intact, the fixing structure inside may break / break.

[0003] Existing interior and exterior trims generally design the fixing buckle or bolt fixing structure directly onto the plastic body structure. When the plastic is subjected to external force, once the structure at the fixing point is damaged, the entire plastic assembly must be replaced, which is expensive and causes great loss in the invisible process. After all, other parts are intact. If they are not replaced, the interior and exterior trims will shake and make strange noises.

[0004] Therefore, if only the fixed structure can be replaced, not only can the abnormal noise problem be solved, but the cost will also be greatly reduced. SUMMARY OF THE INVENTION

[0005] The purpose of the present invention is to address the deficiencies of the above-mentioned technology and provide a modular design of replaceable plastic parts fixing structure. When damage or breakage occurs, the buckle can be replaced separately, which greatly reduces the cost.

[0006] To achieve the above-mentioned purpose, the modular replaceable plastic component fixing structure designed by the present invention includes a buckle and a buckle slot provided on the guard plate, and also includes two first inclined protrusions symmetrically provided on the notch of the buckle slot, the inclined surface of the first inclined protrusion extends toward the inside of the buckle slot, and forms a first abutment surface with the slot wall of the buckle slot, the buckle includes a flexible inverted U-shaped buckle body, and the outer sides of the two arm ends of the buckle body are provided with second inclined protrusions, and the inclined surface of the second inclined protrusion extends toward the outer side of the buckle body and upward, and forms a second abutment surface with the two arms of the buckle body.

[0007] Preferably, the thickness of the first inclined protrusion in the vertical direction is 2.5-3 mm, which is the matching thickness of the buckle and the buckle groove, and can resist a certain external force, so that the plastic part has a certain fixing strength, meeting the requirements of some OEMs for disassembly and assembly for 5 times.

[0008] Preferably, a vertical support plate is provided in the buckle groove. The support plate extends out of the buckle groove, and the two first inclined surface protrusions are symmetric with respect to the support plate, playing a supporting role for the buckle.

[0009] Preferably, two cushion piles are provided at the bottom of the buckle groove, and the two cushion piles are respectively located on both sides of the support plate, playing a supporting role for the two arms of the buckle.

[0010] Preferably, the two cushion piles are parallel to the support plate, and the two cushion piles are symmetric with respect to the support plate.

[0011] Preferably, support protrusions facing the inside of the buckle body are provided at the ends of the two arms of the buckle body in the horizontal direction, and the distance between the two support protrusions is greater than the thickness of the support plate.

[0012] Preferably, when the two arms of the buckle body are clamped, the distance between the outermost sides of the two second inclined surface protrusions is less than the distance between the innermost sides of the two first inclined surface protrusions.

[0013] Preferably, a resisting plate perpendicular to the support plate is provided on one side of the buckle groove, resisting the sides of the two arms of the buckle to limit it.

[0014] Preferably, both the buckle and the guard plate are plastic parts.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. Through the flexible design and modular design of plastic parts, and the structure is not integrally formed with the plastic part body, but is separately injection-molded and then assembled together, so that the fixing structure of the plastic part can be disassembled without damaging the plastic part;

[0017] 2. When damage or fracture occurs, the buckle groove of the guard plate will not be damaged. Therefore, the guard plate can be directly retained, and only the replaceable buckle needs to be replaced, greatly reducing the cost, improving the competitive advantage of the product, facilitating the acquisition of business, and creating a greater profit space for the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the replaceable plastic part fixing structure with modular design of the present invention;

[0019] Figure 2 is Figure 1 a schematic structural diagram when the buckle and the buckle groove in

[0020] Figure 3 is Figure 1 a schematic structural diagram of the buckle groove in

[0021] Figure 4 is Figure 1 a schematic structural diagram of the buckle in

[0022] Figure 5 is Figure 1 a cross-sectional view of the assembled buckle and buckle groove in

[0023] The reference numerals of the components in the figure are as follows:

[0024] buckle 1, guard plate 2, buckle groove 3, first inclined surface protrusion 4, first abutting surface 5, buckle body 6, second inclined surface protrusion 7, second abutting surface 8, support plate 9, cushion pile 10, support protrusion 11, abutting plate 12. Specific embodiments

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the modular and replaceable plastic part fixing structure of the present invention includes a buckle 1 and a buckle groove 3 provided on a guard plate 2, and further includes two first inclined surface protrusions 4 symmetrically arranged at the notch of the buckle groove 3. The inclined surface of the first inclined surface protrusion 4 extends towards the inside of the buckle groove 3, forming a first abutting surface 5 with the groove wall of the buckle groove 3. The buckle 1 includes an inverted U-shaped buckle body 6, and second inclined surface protrusions 7 are provided on the outer sides of the ends of the two arms of the buckle body 6. The inclined surface of the second inclined surface protrusion 7 extends towards the outside and upwards of the buckle body 6, forming a second abutting surface 8 between the two arms of the buckle body 6.

[0027] Among them, the thickness of the first inclined surface protrusion 4 in the vertical direction is 2.5 - 3 mm. In this embodiment, the thickness is 2.9 mm. This thickness is the matching thickness of the buckle 1 and the buckle groove 3, which can resist a certain external force, so that the plastic part has a certain fixing strength and meets the requirement of partial OEM disassembly and assembly 5 times.

[0028] In addition, a vertical support plate 9 is provided in the buckle groove 3. The support plate 9 extends out of the buckle groove 3. The two first inclined surface protrusions 4 are symmetric with respect to the support plate 9 and play a supporting role for the buckle 1. Two cushion piles 10 are provided at the bottom of the buckle groove 3. The two cushion piles 10 are respectively located on both sides of the support plate 9. The two cushion piles 10 are parallel to the support plate 9 and are symmetric with respect to the support plate 9, playing a supporting role for the two arms of the buckle 1. An abutting plate 12 perpendicular to the support plate 9 is provided on one side of the buckle groove 3, abutting against the sides of the two arms of the buckle 1.

[0029] Meanwhile, at the ends of the two arms of the buckle body 6, support protrusions 11 facing the inside of the buckle body 6 are provided in the horizontal direction. The distance between the two support protrusions 11 is greater than the thickness of the support plate 9. When clamping the two arms of the buckle body 6, the distance between the outermost sides of the two second inclined surface protrusions 7 is less than the distance between the innermost sides of the two first inclined surface protrusions 4.

[0030] When this embodiment is in use, clamp the two arms of the buckle 1, insert the buckle 1 into the buckle slot 3 until the second abutting surface 8 is located below the first abutting surface 5, and then release the two arms of the buckle 1. The first abutting surface 5 will then limit the second abutting surface 8 to prevent the buckle 1 from disengaging from the buckle slot 3. When the buckle 1 is assembled in place in the buckle slot 3, the abutting plate 12 in the buckle slot 3 fits against the sides of the two arms of the buckle 1, the first abutting surface 5 fits against the second abutting surface 8, and the support protrusion 11 fits against the cushion pile 10. The buckle 1 is then in very close cooperation with the guard plate 2. The state of the good cooperation is as Figure 5 shown. When the plastic part is subjected to the force shown in the F direction, since the buckle 1 has a mating thickness of 2.9 mm with the buckle slot 3, the buckle 1 will be able to resist a certain amount of external force, enabling the plastic part to have a certain fixing strength and meeting the requirements of some OEMs for 5 disassembly and assembly operations. In addition, when the buckle 1 is damaged or broken, the buckle slot 3 of the guard plate 2 will not be damaged. Therefore, the guard plate 2 can be directly retained, and only the replaceable buckle 1 needs to be replaced.

[0031] The replaceable plastic part fixing structure with modular design of the present invention, through the flexible design and modular design of the plastic part, and the structure is not integrally formed with the plastic part body, but is separately injection molded and then assembled together. This enables the fixing structure of the plastic part to be disassembled without damaging the plastic part; when damaged or broken, the buckle slot 3 of the guard plate 2 will not be damaged. Therefore, the guard plate 2 can be directly retained, and only the replaceable buckle 1 needs to be replaced, greatly reducing the cost, improving the competitive advantage of the product, facilitating the acquisition of business, and creating a greater profit space for the enterprise.

Claims

1. A modularly designed replaceable plastic component fixing structure, comprising a buckle (1) and a buckle groove (3) provided on a guard plate (2), characterized in that: It also comprises two first inclined surface protrusions (4) symmetrically arranged on the notch of the buckle groove (3), the inclined surfaces of the first inclined surface protrusions (4) extending toward the inside of the buckle groove (3), forming a first abutment surface (5) between the groove wall of the buckle groove (3), the buckle (1) comprising an inverted U-shaped buckle body (6), the outer sides of the two arm ends of the buckle body (6) are each provided with a second inclined surface protrusion (7), the inclined surfaces of the second inclined surface protrusions (7) extending toward the outside of the buckle body (6) and upward, forming a second abutment surface (8) between the two arms of the buckle body (6); A vertical support plate (9) is provided in the buckle slot (3), the support plate (9) extends out of the buckle slot (3), and the two first inclined protrusions (4) are symmetrical relative to the support plate (9); Two pad piles (10) are provided at the bottom of the buckle groove (3), and the two pad piles (10) are respectively located on both sides of the support plate (9); The two piles (10) are parallel to the support plate (9), and the two piles (10) are symmetrical relative to the support plate (9); The ends of the two arms of the buckle body (6) are provided with support protrusions (11) facing the inside of the buckle body (6) in the horizontal direction, and the distance between the two support protrusions (11) is greater than the thickness of the support plate (9); When the two arms of the buckle body (6) are clamped, the distance between the outermost sides of the two second inclined surface protrusions (7) is smaller than the distance between the innermost sides of the two first inclined surface protrusions (4); A stop plate (12) perpendicular to the support plate (9) is provided on one side of the buckle slot (3); The thickness of the first inclined protrusion (4) in the vertical direction is 2.5 to 3 mm; The buckle (1) and the guard plate (2) are both plastic parts.

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