Vehicle body structure
By using adhesive materials in the car body structure to bond the outer panels and reinforcements, and utilizing the rigidity properties of the adhesive materials as the temperature changes, the problem of collapse and deformation of the outer panels during the thermal drying process of the car body structure is solved, and the stability of the car body structure is achieved. and improvement in appearance quality.
Patent Information
- Application Number
- CN202420829948.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-04-22
AI Technical Summary
In the production line of vehicle body electrodeposition/painting, the hot air provided by the drying furnace is difficult to circulate inside the vehicle body shell, resulting in poor thermal efficiency, the outer plate collapses and deforms due to uneven heat on the inside and outside sides, and existing reinforcement measures such as surface reinforcement ribs , increasing the surface radius and curvature or setting up reinforcement patches or foaming materials cannot effectively suppress this deformation.
Adhesive materials between the outer panels and reinforcements are used for bonding. The rigidity of the adhesive materials increases as the temperature rises and decreases as the temperature decreases, thereby suppressing the collapse and deformation of the outer panels when the car body structure heats up, and allowing the outer panels to cool down after cooling. Return to non-collapsed state.
It effectively avoids the deformation of the outer panel of the car body structure after heat drying, improves the heat treatment stability of the car body structure, and ensures the coating quality and the good appearance of the car body.
Smart Images
Figure CN222372974U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a vehicle body structure, in particular to a vehicle body structure comprising an outer plate and a reinforcing material. Background Art
[0002] In the production line of body electroplating / painting, in order to improve productivity and color matching, the body shell with cover parts such as doors and hoods is transported through a drying furnace to bake and dry the paint film on the surface of the body. However, the hot air provided by the drying furnace is difficult to circulate inside the body shell, resulting in poor thermal efficiency. In order to make the inside of the body shell have a sufficiently high temperature, the hot air provided by the drying furnace makes the temperature of the outside of the body shell too high, making the temperature inside and outside the body shell uneven, resulting in poor coating quality and / or deformation of the body shell. In order to suppress the above deformation of the body shell, reinforcing ribs are usually formed on the surface of the body to relieve stress, but the formation of reinforcing ribs on the surface of the body will affect the appearance of the body. Alternatively, the surface radius and curvature of the body can be increased to improve its rigidity, but this still cannot suppress the thermal stress caused by the increase in body temperature. In addition, a reinforcing patch or foam material can be set on the inside of the body as a reinforcing material, but the reinforcing patch is heated or softened to reduce its effectiveness, and the foam material shrinks and deforms the body when it cools and shrinks. Therefore, it is necessary to improve the dry vehicle body structure to overcome the above problems. Utility Model Content
[0003] The utility model provides a vehicle body structure which can prevent the outer plate from being deformed after being thermally dried.
[0004] The utility model provides a vehicle body structure, comprising: an outer plate; a reinforcing material arranged on the back of the outer plate; and an adhesive material, which bonds the outer plate and the reinforcing material to each other. When the temperature of the adhesive material changes from a low temperature to a high temperature, the rigidity of the adhesive material increases, and when the temperature of the adhesive material changes from a high temperature to a low temperature, the rigidity of the adhesive material decreases.
[0005] Based on the above, in the vehicle body structure of the present invention, the outer panel and the reinforcing material are bonded with an adhesive material, and the rigidity of the adhesive material increases as the temperature rises and decreases as the temperature decreases. Accordingly, when the temperature of the vehicle body structure rises due to thermal drying, the rigidity of the adhesive material increases and has sufficient rigidity to suppress the outer panel from collapsing and deforming due to uneven heating of the inner and outer sides of the vehicle body structure. Alternatively, when the temperature of the vehicle body structure rises due to thermal drying, even if the outer panel collapses and deforms due to uneven heating of the inner and outer sides of the vehicle body structure, the rigidity of the adhesive material decreases after the vehicle body structure cools down and does not restrict the outer panel to a collapsed state, so that the outer panel returns to a non-collapsed state after the vehicle body structure cools down. Therefore, the vehicle body structure of the present invention can prevent the outer panel from deforming after thermal drying.
[0006] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figures 1A to 1C It is a partial schematic diagram of thermal drying of a vehicle body structure according to an embodiment of the utility model.
[0008] FIG. 2A to FIG. 2C It is a partial schematic diagram of thermal drying of a vehicle body structure according to another embodiment of the utility model.
[0009] Description of reference numerals:
[0010] 100, 200: vehicle body structure;
[0011] 110, 210: outer panel;
[0012] 110a: back;
[0013] 120, 220: reinforcement material;
[0014] 130, 230: adhesive material;
[0015] S1, S1': first state;
[0016] S2, S2': second state;
[0017] S3, S3': the third state. DETAILED DESCRIPTION
[0018] Figures 1A to 1C It is a partial schematic diagram of thermal drying of a vehicle body structure according to an embodiment of the utility model. Figure 1A is the first state S1 in which the vehicle body structure 100 has not been heated yet, Figure 1B The second state S2 is when the vehicle body structure 100 is heated and heated during the thermal drying process in the vehicle body electrodeposition / painting production line. Figure 1C This is the third state S3 in which the vehicle body structure 100 is cooled after being thermally dried. Figure 1A The vehicle body structure 100 of this embodiment is, for example, a vehicle body shell with cover parts such as doors and hoods, and its partial cross-section is schematically shown in the figure. The vehicle body structure 100 includes an outer panel 110, a reinforcing material 120, and an adhesive material 130. The reinforcing material 120 is disposed on the back side 110a of the outer panel 110. The adhesive material 130 is between the outer panel 110 and the reinforcing material 120 to bond the outer panel 110 and the reinforcing material 120 to each other.
[0019] When the temperature of the adhesive material 130 changes from Figure 1A The low temperature change Figure 1B When the temperature of the adhesive material 130 is increased from Figure 1BThe high temperature changes Figure 1C At low temperatures, the rigidity of the adhesive material 130 decreases. Accordingly, when the vehicle body structure 100 is heated up due to thermal drying (corresponding to Figure 1B ), the rigidity of the adhesive material 130 is increased and has sufficient rigidity to prevent the outer panel 110 from collapsing and deforming due to uneven heating inside and outside the vehicle body structure 100. Therefore, the vehicle body structure 100 of this embodiment can prevent the outer panel 110 from deforming after thermal drying.
[0020] FIG. 2A to FIG. 2C It is a partial schematic diagram of thermal drying of a vehicle body structure according to another embodiment of the utility model. Figure 2A is the first state S1' in which the vehicle body structure 200 has not been heated yet, Figure 2B The second state S2' is when the vehicle body structure 200 is heated and heated during the thermal drying process in the vehicle body electrodeposition / painting production line. Figure 2C This is the third state S3' in which the vehicle body structure 200 is cooled after being thermally dried. FIG. 2A to FIG. 2C The configuration of the vehicle body structure 200 and its outer panel 210, the reinforcing material 220 and the adhesive material 230 is the same or similar to Figures 1A to 1C The configuration of the vehicle body structure 100 and the outer panel 110, the reinforcing material 120 and the adhesive material 130 will not be described in detail herein.
[0021] FIG. 2A to FIG. 2C The embodiment shown and Figures 1A to 1C The difference of the embodiment shown is that when the vehicle body structure 200 is heated up due to thermal drying (corresponding to Figure 2B ), even if the outer panel 210 is heated unevenly inside and outside the vehicle body structure 200, Figure 2B As shown in the collapse deformation, the rigidity of the adhesive material 230 is cooled when the vehicle body structure 200 (corresponding to Figure 2C ) and then descend without limiting the outer panel 210 to a collapsed state, so that the outer panel 210 can be Figure 2C As shown, the outer panel 210 is restored to a non-collapsed state by its elastic restoring force. Thus, the vehicle body structure 200 of this embodiment can prevent the outer panel 210 from being deformed after being thermally dried.
[0022] In the above embodiment, the material of the adhesive 130, 230 may include a polymer gel developed by Hokkaido University that instantly becomes about 2000 times harder at high temperatures and softens at low temperatures (see the paper entitled "Instant thermal switching from soft hydrogel to rigid plastics inspired by thermophile proteins" published in Advanced Materials magazine on November 18, 2019), or other materials with similar properties, so that the rigidity increases when the temperature rises and decreases when the temperature drops as described above. The present invention does not limit the specific composition of the adhesive.
[0023] In summary, in the vehicle body structure of the present invention, the outer panel and the reinforcing material are bonded with an adhesive material, and the rigidity of the adhesive material increases as the temperature rises and decreases as the temperature decreases. Accordingly, when the temperature of the vehicle body structure rises due to thermal drying, the rigidity of the adhesive material increases and has sufficient rigidity to suppress the outer panel from collapsing and deforming due to uneven heating of the inner and outer sides of the vehicle body structure. Alternatively, when the temperature of the vehicle body structure rises due to thermal drying, even if the outer panel collapses and deforms due to uneven heating of the inner and outer sides of the vehicle body structure, the rigidity of the adhesive material decreases after the vehicle body structure cools down and does not restrict the outer panel to a collapsed state, so that the outer panel returns to a non-collapsed state after the vehicle body structure cools down. Thus, the vehicle body structure of the present invention can prevent the outer panel from deforming after thermal drying.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solution recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A vehicle body structure, characterized in that: include: outer panel; A reinforcing material, arranged on the back side of the outer plate; as well as Adhesive material, bonding the outer plate and the reinforcing material to each other, When the temperature of the adhesive material changes from a low temperature to a high temperature, the rigidity of the adhesive material increases, and when the temperature of the adhesive material changes from a high temperature to a low temperature, the rigidity of the adhesive material decreases.