Combination structure between automotive trim plastic parts and combination method thereof

Abstract

The invention discloses a combination structure between automotive trim plastic parts and a combination method thereof, and relates to the technical field of automotive trim parts, the combination structure comprises a map pocket outer cover and a map pocket inner cover, a plurality of groups of combination inner ribs are uniformly fixed on the inner side of the map pocket outer cover; a plurality of groups of combined outer ribs matched with the combined inner ribs are uniformly fixed in the map pocket inner cover, and structural adhesive is filled between the combined inner ribs and the combined outer ribs. The structural adhesive is filled in the empty grooves at the combination outer ribs of the map bag inner cover, then the multiple groups of combination inner ribs of the map bag outer cover are pressed into the combination outer ribs, so that the map bag outer cover and the map bag inner cover are mutually pressed and connected, and under the cooperation of the combination inner ribs, the combination outer ribs and the structural adhesive, the map bag outer cover and the map bag inner cover are mutually pressed and connected. Combination of automobile plastic parts can be achieved without using a hot plate or an ultrasonic welding die and matched equipment, the structural adhesive is filled between the combining ribs, no odor is generated, environmental protection and no pollution are achieved, electric energy is saved, and the problems that preheating is needed in hot plate welding, electric energy is consumed, and the odor is generated are solved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile interior decoration parts, in particular to a bonding structure between automobile interior decoration plastic parts and a bonding method thereof. Background Art

[0002] The combination of automobile interior plastic parts is usually to cover up the unsightly internal features, such as screws, reinforcing ribs, holes, convex and concave platforms, functional parts, electronic components, etc., to achieve the effect of external beauty, such as car seat map pockets, glove boxes and outer panels, storage boxes and outer covers, etc.

[0003] Most of the existing automobile interior plastic parts are connected by hot plate welding or ultrasonic welding. The latter has the problems of high equipment and mold costs (about 120,000 yuan for hot plate welding and about 800,000 yuan for ultrasonic welding), energy consumption and pollution (hot plate welding requires preheating for 4 hours, consumes electricity and has odor), limited product thickness (hot plate welding requires high ribs and thick products), high mold change costs (custom mold equipment, design changes require mold repair or scrapping), unstable fusion effect (hot plate welding is prone to failure under the action of temperature and external force, and has low pull-off strength), etc. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide a bonding structure and a bonding method between automobile interior plastic parts, so as to solve the technical problems that in the prior art, automobile interior plastic parts are mostly bonded by hot plate welding or ultrasonic welding, which has the problems of high equipment and mold costs, high energy consumption and pollution, limited product thickness, high mold change cost, and unstable fusion effect.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bonding structure between automobile interior plastic parts, comprising a map pocket outer cover and a map pocket inner cover, wherein a plurality of groups of bonding inner ribs are evenly fixed on the inner side of the map pocket outer cover, the bonding inner ribs are located on the inner side of the map pocket outer cover, and the plurality of groups of bonding inner ribs gradually increase from the inside to the outside and are evenly distributed in a rectangular ring;

[0006] The map pocket inner cover has multiple groups of combined outer ribs evenly fixed inside, which match the multiple groups of combined inner ribs. The combined outer ribs are located on the inner side of the map pocket inner cover, and the multiple groups of combined outer ribs gradually increase from the inside to the outside and are evenly distributed in a rectangular ring.

[0007] The space between the inner and outer ribs is filled with structural adhesive, which is made of silicone adhesive. The structural adhesive is filled between the inner and outer ribs using a flow controller.

[0008] By adopting the above technical scheme, multiple groups of inner ribs are arranged on the inner side of the map pocket outer cover, multiple groups of outer ribs that cooperate with the inner ribs are arranged on the inner side of the map pocket inner cover, structural adhesive is filled in the empty grooves at the outer ribs of the map pocket inner cover, and then the multiple groups of inner ribs of the map pocket outer cover are pressed into the inner part of the outer ribs, so that the map pocket outer cover and the map pocket inner cover are pressed and connected with each other, so that under the action of the structural adhesive, the connection is more stable. That is to say, through the cooperation of the inner ribs, the outer ribs and the structural adhesive, the combination of automobile plastic parts can be achieved without using a hot plate or ultrasonic welding mold and supporting equipment. At the same time, the structural adhesive is filled between the bonding ribs, no odor is generated, environmental protection, pollution-free and energy-saving, and the problem of hot plate welding requiring preheating, consuming electricity and generating odor is avoided.

[0009] A method for bonding automobile interior plastic parts, the process comprising the following steps:

[0010] S1: filling structural adhesive: firstly, filling the empty groove of the inner cover of the map bag at the joint outer rib with structural adhesive, wherein the structural adhesive adopts silicone structural adhesive to improve the overall connection stability. Specifically, the structural adhesive is filled by adopting a flow controller to ensure the uniformity of the structural adhesive filling;

[0011] S2: Pressing stage: During pressing, the combined inner reinforcement and the combined outer reinforcement are pressed against each other. At this time, the combined inner reinforcement and the combined outer reinforcement are connected to each other under the action of the structural adhesive, thereby increasing the adhesion with the structural adhesive.

[0012] In summary, the present invention mainly has the following beneficial effects: the present invention arranges multiple groups of inner ribs on the inner side of the map pocket outer cover, arranges multiple groups of outer ribs that cooperate with the inner ribs on the inner side of the map pocket inner cover, fills the empty grooves at the outer ribs of the map pocket inner cover with structural adhesive, and then presses the multiple groups of inner ribs of the map pocket outer cover into the inner ribs, thereby making the map pocket outer cover and the map pocket inner cover press-fitted and connected to each other, so that under the action of the structural adhesive, the connection is more stable, that is, through the cooperation of the inner ribs, the outer ribs and the structural adhesive, the connection between automobile plastic parts can be achieved without using a hot plate or ultrasonic welding mold and supporting equipment, and at the same time, the structural adhesive is filled between the ribs, no odor is generated, environmental protection, pollution-free and energy-saving, and the problem of hot plate welding requiring preheating, consuming electricity and generating odor is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 An exploded view of the present invention as a whole;

[0014] Figure 2 An enlarged cross-sectional view of the present invention as a whole;

[0015] Figure 3 For the present invention Figure 2 A magnified image of point A;

[0016] Figure 4 It is a front view of the map pocket outer cover of the present invention;

[0017] Figure 5 It is a front view of the inner cover of the map pocket of the present invention.

[0018] In the figure: 1. map pocket outer cover; 101. combined inner ribs; 2. structural adhesive; 3. map pocket inner cover; 301. combined outer ribs. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] The following describes an embodiment of the present invention based on its overall structure.

[0021] A bonding structure between automobile interior plastic parts, such as Figure 1-5 As shown, it comprises a map pocket outer cover 1 and a map pocket inner cover 3, wherein a plurality of groups of combined inner ribs 101 are evenly fixed on the inner side of the map pocket outer cover 1, wherein the combined inner ribs 101 gradually increase in size from the inside to the outside and are evenly distributed in a rectangular ring;

[0022] By arranging the inner rib 101 on the inner side of the map pocket outer cover 1, cooperating with the outer rib 301 of the map pocket inner cover 3, and combining with the structural adhesive 2, it is possible to connect the automobile plastic parts without using a hot plate or ultrasonic welding mold and supporting equipment, thereby reducing costs and making the connection more stable. In addition, the structural adhesive 2 filled between the ribs is odorless, environmentally friendly, pollution-free, and saves electricity.

[0023] A plurality of groups of combined outer ribs 301 matching with the plurality of groups of combined inner ribs 101 are evenly fixed inside the map pocket inner cover 3, wherein the combined outer ribs 301 gradually increase in size from the inside to the outside and are evenly distributed in a rectangular ring;

[0024] The combination of the outer rib 301 and the inner rib 101 of the map pocket outer cover 1, as well as the filling of the structural adhesive 2, also achieves the above-mentioned beneficial effects, further improving the connection stability;

[0025] The structural adhesive 2 is filled between the inner rib 101 and the outer rib 301. The adhesive is made of silicone and filled with a flow controller. The structural adhesive itself has good performance. For example, the tear strength, elongation at break, and tensile strength of the silicone structural adhesive are relatively strong. After being fully cured for 24 hours, it can withstand low temperatures of -60°C and high temperatures of 300°C without failure. It has stronger weather resistance. According to tests, the tensile strength of plastic parts bonded by the silicone structural adhesive reaches 600N without damage.

[0026] At the same time, the filling structural adhesive 2 does not produce odor, is environmentally friendly and pollution-free, and saves electricity, avoiding the problem of hot plate welding requiring preheating, consuming electricity and producing odor, and makes the connection between the map pocket outer cover 1 and the map pocket inner cover 3 more stable.

[0027] A method for bonding automobile interior plastic parts, wherein the specific bonding process is to first fill a structural adhesive 2 in an empty groove at a bonding outer rib 301 of a map pocket inner cover 3, and then align the bonding inner rib 101 of the map pocket outer cover 1 with the bonding outer rib 301 of the map pocket inner cover 3 and apply pressure to press them together. In this process, the bonding inner rib 101 is pressed into the inside of the bonding outer rib 301, and the structural adhesive 2 fills and bonds the inner wall of the bonding inner rib 101 and the bonding outer rib 301.

[0028] Furthermore, the present invention can make the map bag product thinner, more beautiful and save the internal space of the product. The present solution can make the overall thickness of the product as thin as possible because it does not require too high rib features. In this era of rapid development, people have higher and higher requirements for the thinness and appearance of products. The implementation of this solution meets the needs of the times.

[0029] Likewise, the present invention can realize the free production of samples, small batches, and batches, and there are relatively few restrictions during the implementation of this solution;

[0030] This solution can realize the production of samples without using equipment, molds, tooling, etc. at the sample stage, which can save the use of development funds;

[0031] In the process of small batch and large batch production, if fast production is achieved, multiple pressing blocks can be made to press the products. Considering the limitations of production site and space, multiple semi-finished products can be stacked together and pressed by their own gravity. The number of pressing blocks is just enough for one shift. After about 1-6 hours of pressing, they can be initially cured. The pressing blocks can be used in shifts to achieve recycling, and can be completely cured after being left naturally for 24 hours.

[0032] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A bonding structure between automobile interior plastic parts, comprising a map pocket outer cover (1) and a map pocket inner cover (3), characterized in that: The map pocket outer cover (1) has multiple groups of combined inner ribs (101) uniformly fixed on the inner side, and the map pocket inner cover (3) has multiple groups of combined outer ribs (301) matched with the multiple groups of combined inner ribs (101) uniformly fixed on the inner side; Structural adhesive (2) is filled between the combined inner ribs (101) and the combined outer ribs (301).

2. The bonding structure between automobile interior plastic parts according to claim 1, characterized in that: The combined inner ribs (101) are located on the inner side of the map pocket outer cover (1), and the plurality of groups of combined inner ribs (101) gradually increase in size from the inside to the outside and are evenly distributed in a rectangular ring.

3. The bonding structure between automobile interior plastic parts according to claim 1, characterized in that: The combined external ribs (301) are located on the inner side of the map pocket inner cover (3), and the multiple groups of combined external ribs (301) gradually increase in size from the inside to the outside and are evenly distributed in a rectangular ring.

4. The bonding structure between automobile interior plastic parts according to claim 1, characterized in that: The structural adhesive (2) is made of silicone adhesive, and the structural adhesive (2) is filled between the combined inner ribs (101) and the combined outer ribs (301) using a flow controller.

5. A method for bonding automobile interior plastic parts, characterized in that The process of connecting and combining automobile interior plastic parts using the connecting structure described in any one of claims 1 to 4 comprises the following steps: S1: filling structural adhesive: firstly, filling the empty groove of the inner cover of the map bag at the joint outer rib with structural adhesive, wherein the structural adhesive adopts silicone structural adhesive to improve the overall connection stability. Specifically, the structural adhesive is filled by adopting a flow controller to ensure the uniformity of the structural adhesive filling; S2: Pressing stage: During pressing, the combined inner reinforcement and the combined outer reinforcement are pressed against each other. At this time, the combined inner reinforcement and the combined outer reinforcement are connected to each other under the action of the structural adhesive, thereby increasing the adhesion with the structural adhesive.

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