Automobile rear shock absorber seat and rear floor assembly and vehicle
By separating the rear floor and rear shock absorber seats of the car as independent aluminum alloy die-cast moldings, and connecting them through riveting or glue layers, the problems of cumbersome manufacturing processes and high cost are solved, and the lightweight and mechanics of the rear floor are achieved. Performance improvements reduce production and maintenance costs, and improve vehicle range and production flexibility.
Patent Information
- Application Number
- CN202420138641.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-19
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-19
AI Technical Summary
The manufacturing process of traditional automobile rear shock absorber seats and rear floors is cumbersome, resulting in high labor costs and is not conducive to lightweighting of the car body. Different models need to develop different die-casting equipment, which increases cost investment.
The rear floor and the rear shock absorber seat are separated as separate aluminum alloy die-cast moldings, and are connected by riveting or glue layer to reduce the process and improve versatility and production efficiency.
The lightweight and mechanical performance improvement of the rear floor is achieved, reducing production and maintenance costs, and improving the vehicle's range and production flexibility.
Smart Images
Figure CN222157128U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, in particular to a rear shock absorber seat and a rear floor assembly of an automobile. Background Art
[0002] The traditional rear shock absorber seat and rear floor are made of multiple sheet metal stampings, which need to be connected together by welding and other splicing methods. The process is relatively cumbersome and requires a lot of manpower costs. In addition, this manufacturing method is not conducive to the development of lightweight body. Therefore, some automobile manufacturers have begun to adopt one-piece die-casting technology to integrate the rear floor together with multiple parts such as the rear shock absorber seat into an aluminum alloy die-casting. However, the die-cast rear floor and rear shock absorber seat integrated part poses a huge challenge to die-casting technology. In addition, different models with different sitting postures need to develop different die-casting equipment to adapt to the change in the position of the rear shock absorber seat, which will bring higher cost investment.
[0003] Therefore, there is room for improvement in the connection between the rear shock absorber seat and the rear floor. Utility Model Content
[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an automobile rear shock absorber seat and rear floor assembly, which can take into account the mechanical properties of the rear floor and the rear shock absorber seat, and can also improve the commonality between the rear floor and different rear shock absorber seats.
[0005] According to an embodiment of the utility model, a rear shock absorber seat and rear floor assembly of an automobile comprises a rear shock absorber seat and a rear floor. The rear floor is an aluminum alloy part and is an integrated die-casting part; the rear shock absorber seat is an aluminum alloy part and is a die-casting part independent of the rear floor, and the rear shock absorber seat is connected to the rear floor.
[0006] According to an automobile rear shock absorber seat and rear floor assembly of the embodiment of the utility model, the rear floor adopts an integrated die-casting molded part. The weight of the rear floor is reduced, the cruising range of the vehicle is improved, and the processing dimensional accuracy of the rear floor is improved. No additional connection process is required, and the process steps such as welding, riveting, and gluing are reduced, which can significantly improve the production efficiency of the automobile, greatly reduce labor costs, and also reduce the number of connection points, thereby improving the overall rigidity of the rear floor. The independently die-cast rear shock absorber seat can achieve the lightweight of the rear shock absorber seat. At the same time, the tensile strength of the die-cast rear shock absorber seat is relatively improved, which can meet the performance requirements of the vehicle for the rear shock absorber seat. In addition, the rear shock absorber seat and the rear floor are produced separately as two die-casting molded parts, and then the rear shock absorber seat is connected to the rear floor, which is more flexible for matching the rear floor with rear shock absorber seats of different specifications. If the rear shock absorber and the rear floor assembly are formed by integrated die-casting, two sets of integrated die-casting molds need to be developed for models with different sitting postures, one set for producing models with high sitting postures, and the other set for producing models with low sitting postures. For the automobile rear shock absorber seat and rear floor assembly of the utility model, it is only necessary to develop a die-casting equipment mold for the rear shock absorber seat suitable for different models, with a relatively small cost investment. Through the universal design of the rear floor and the combination of rear shock absorber seats of different sizes, production can be more flexible.
[0007] According to some embodiments of the present invention, the rear shock absorber seat is connected to the rear floor by riveting.
[0008] According to some embodiments of the utility model, a rubber layer is filled between the rear shock absorber seat and the rear floor.
[0009] According to some embodiments of the utility model, the rear shock absorber seat, the rear floor and the rubber layer are connected by self-piercing riveting.
[0010] Optionally, the rear shock absorber seat and the rear floor are bonded by an adhesive layer and then connected by SPR.
[0011] According to some embodiments of the utility model, the rear floor is an aluminum alloy part that does not require heat treatment, and the rear shock absorber seat is an aluminum alloy part that is die-cast and subjected to T7 aging treatment.
[0012] In some embodiments, the rear floor and the rear shock absorber seat are both made of materials that do not require heat treatment.
[0013] According to some embodiments of the utility model, a first flange is formed on one side of the rear floor by die-casting, and a second flange is formed on one side of the rear shock absorber seat by die-casting, and the second flange is overlapped with the first flange and riveted together.
[0014] According to some embodiments of the present invention, the first flange includes: a first horizontal section, a first bending section, a second horizontal section, a second bending section and a third horizontal section.
[0015] One end of the first bending section is connected to the first horizontal section, and an angle is formed between the first bending section and the first horizontal section;
[0016] The second horizontal segment is connected to the other end of the first bending segment, and the second horizontal segment is arranged parallel to the first horizontal segment;
[0017] An included angle is formed between the second bending section and the second horizontal section, and the second bending section and the first bending section connect two ends of the second horizontal section;
[0018] The third horizontal segment is connected to an end of the second bending segment away from the second horizontal segment, and the third horizontal segment is arranged parallel to the first horizontal segment.
[0019] A vehicle according to another embodiment of the utility model includes the automobile rear shock absorber seat and rear floor assembly described in the above embodiment.
[0020] The advantages of the vehicle and the above-mentioned rear shock absorber seat and rear floor assembly over the prior art are the same, which will not be repeated here.
[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0023] Figure 1 It is a schematic structural diagram of a rear shock absorber seat and a rear floor assembly of an automobile according to some embodiments of the utility model.
[0024] Reference numerals:
[0025] Rear shock absorber seat and rear floor assembly 100;
[0026] The rear floor 10, the first flange 11, the first horizontal section 111, the first bending section 112, the second horizontal section 113, the second bending section 114, and the third horizontal section 115;
[0027] Rear shock absorber seat 20 and rivet 30. DETAILED DESCRIPTION
[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. 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.
[0029] In the description of the present invention, it should be understood that the terms "thickness", "upper", "lower", "front", "back", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.
[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0031] Reference below Figure 1 A rear shock absorber seat and rear floor assembly 100 for an automobile according to an embodiment of the present utility model is described.
[0032] like Figure 1 As shown, a rear shock absorber seat and rear floor assembly 100 of an automobile according to some embodiments of the present invention includes a rear shock absorber seat 20 and a rear floor 10 .
[0033] The rear floor 10 is an aluminum alloy part and is an integrated die-casting part. The integrated part is made of aluminum alloy, and the rear floor 10 structure is highly integrated, which has a higher lightweight advantage. The integrated rear floor 10 forms a complete load-bearing structure, improves the rigidity and strength of the rear floor 10, makes it have better anti-collision performance and anti-corrosion performance, and improves the safety and durability of the vehicle. At the same time, the manufacturing process is simplified accordingly, and the assembly cost and production cycle are reduced.
[0034] The rear shock absorber seat 20 is an aluminum alloy part, and the rear shock absorber seat 20 is a die-casting part independent of the rear floor 10. The rear shock absorber seat 20 is an integrated die-casting part, which achieves weight reduction and mechanical performance improvement, reduces multiple connection processes, and improves production efficiency.
[0035] For the vehicle, the weight reduction of the rear floor 10 and the rear shock absorber seat 20 greatly reduces the overall weight of the vehicle, correspondingly improves the vehicle's cruising range, and provides the driver with a better experience.
[0036] The rear shock absorber seat 20 is connected to the rear floor 10, which can improve the adaptability and versatility of the rear floor 10. During the development process, when the hard point of the rear shock absorber is adjusted, it is only necessary to redevelop the rear shock absorber seat 20. Compared with the die-casting mold in which the rear floor 10 and the rear shock absorber seat 20 are integrated, the mold opening cost is relatively reduced. Specifically, the production mold size of the rear shock absorber seat 20 can be adjusted according to demand without changing the mold size of the rear floor 10. By producing different rear shock absorber seats 20 separately and then connecting them to the rear floor 10 respectively, the flexibility of production and manufacturing can be improved, which is conducive to the manufacturer's flexible adjustment of production needs and reduces unnecessary inventory.
[0037] Since the rear shock absorber seat 20 is produced separately from the rear floor 10 , the rear shock absorber seat 20 can be individually inspected and controlled for quality, thereby improving the quality of the rear shock absorber seat 20 and improving the reliability of the rear shock absorber seat 20 .
[0038] When a problem or failure occurs on the rear shock absorber seat 20, only the component needs to be replaced, thereby reducing maintenance costs.
[0039] According to some embodiments of the utility model, the rear shock absorber seat 20 is connected to the rear floor 10 by riveting. The connection of the two parts is achieved by fracturing and deformation, and the riveting connection process is simple and convenient for disassembly. The riveting connection method reduces the stress concentration at the connection, has high dynamic fatigue strength, and has good impact energy absorption characteristics, which is suitable for the connection between the rear shock absorber and the rear floor 10, thereby achieving the connection effect of the rear floor 10 adapting to the rear shock absorber seat 20 of different specifications.
[0040] According to some embodiments of the utility model, a rubber layer is filled between the rear shock absorber seat 20 and the rear floor 10. The rubber layer is introduced into the riveted connection to play a role in bonding and fixing the connection between the rear shock absorber seat 20 and the rear floor 10, so that the mechanical properties of the joint position of the two are greatly improved. It can also play a certain buffering and energy absorption effect during the driving process of the vehicle to make up for the gap and deficiency of the connection position. In addition, the rubber layer also has a noise reduction effect on the connection position to avoid direct friction between the rear shock absorber seat 20 and the rear floor 10 to generate noise.
[0041] Optionally, the rear shock absorber seat 20, the rear floor 10 and the rubber layer are connected by self-piercing riveting. Since the self-piercing riveting is more reliable, no thermal deformation will occur during the riveting process, so that the connection effect of the connection position is stable, thereby ensuring the reliability of the vehicle. In addition, during the production and processing process, the self-piercing riveting is relatively clean and has no smoke, no splashing, and no pollutants. At the same time, the self-piercing riveting is relatively easy to automate, which is convenient for reducing labor costs and ensuring that the riveting operation quality is controllable.
[0042] In some embodiments, the rear shock absorber seat and the rear floor are bonded by a glue layer and then connected by SPR.
[0043] First, the structural adhesive has the advantages of high strength, peel resistance and impact resistance. It can be used to bond different materials, greatly enhancing the firmness of the riveted connection. At the same time, the stress distribution on the bonding surface of the structural adhesive layer is uniform, thereby reducing the risk of deformation at the connection.
[0044] Secondly, the SPR connection combines self-drilling and self-tapping for locking and fastening, does not penetrate the underlying sheet material, has good sealing performance, and the rear shock absorber seat and rear floor connected through the SPR have high fatigue resistance.
[0045] The SPR connection process is divided into four stages:
[0046] 1. Clamping stage: The blank holder presses the sheet to be riveted downward. At the same time, the rivet is also driven by the punch to pre-press the sheet vertically downward.
[0047] 2. Sprint stage: The punch moves downward, pushing the rivet to force it to pierce the upper sheet. At the same time, the rivet also drives the lower sheet to undergo plastic deformation into the die.
[0048] 3. Expansion stage: As the riveting process progresses, the rivet legs gradually open, and the lower sheet undergoes plastic deformation and gradually fills into the die. Under the joint action of the punch and the die boss, the rivet legs expand to the surroundings and embed into the lower sheet, thus forming a mechanical interlocking structure between the rivet and the sheet.
[0049] 4. Punching and riveting are completed: When the punch presses the rivet down until the rivet head is in close contact and flush with the upper surface of the upper sheet, the riveting is considered completed. At this time, the blank holder releases the blank holder force, the punch returns to the initial position, and the punching and riveting is completed.
[0050] According to some embodiments of the present invention, the rear floor panel 10 is an aluminum alloy part that does not require heat treatment, and the rear shock absorber seat 20 is an aluminum alloy part that is die-cast and subjected to T7 aging treatment.
[0051] The aluminum alloy parts that do not require heat treatment are adapted to the requirements of integrated processing, so that the overall strength of the rear floor 10 is improved, and production efficiency can be ensured, production costs can be reduced, and a role in stabilizing production capacity can be played.
[0052] Optionally, the rear floor 10 is an aluminum alloy part made of AlSi7, a material that does not require heat treatment. The high strength and hardness of the material that does not require heat treatment are utilized to ensure that the produced aluminum alloy part is both lightweight and maintains excellent mechanical properties. At the same time, the aluminum alloy material that does not require heat treatment has good corrosion resistance, meeting the requirements for it to become a vehicle body structure.
[0053] The rear shock absorber seat 20 is made of an aluminum alloy part that has been subjected to T7 aging treatment after die casting. T7 aging treatment is a process in which the material is heated to a certain temperature and maintained for a period of time, and then the material is made to meet certain organizational structure and performance requirements by rapid cooling and other methods. The T7 heat treatment process generally includes two steps: solution treatment and aging treatment. Solution treatment is to heat the aluminum alloy to the solution temperature and maintain it for a certain period of time so that the alloy elements are dissolved in the matrix to form a solid solution. The holding time is determined according to the thickness and specifications of the alloy plate. The purpose of solution treatment is to eliminate the supersaturated solid solution and precipitation phase in the alloy and improve the plasticity and machinability of the alloy.
[0054] Aging treatment is to heat the alloy to a certain temperature and keep it for a certain time after solution treatment, so that the precipitate phase in the alloy precipitates at the grain boundary and in the grain to form a fine and uniform precipitate phase. The temperature and time of aging treatment are selected according to the composition and requirements of the alloy. The purpose of aging treatment is to further improve the strength and rigidity of the alloy while maintaining a certain plasticity.
[0055] The aluminum alloy parts of the rear shock absorber 20 treated with T7 play a role in uniform organization and stress elimination, thereby improving the rigidity and strength during use and maintaining high mechanical properties.
[0056] Optionally, the rear floor 10 and the rear shock absorber seat 20 are both heat-treatment-free aluminum alloy parts. The heat-treatment-free aluminum alloy parts are a kind of high-strength and tough aluminum alloy parts, so that the rear floor 10 and the rear shock absorber seat 20 do not produce cracks under stress and are suitable for use in automotive structural parts.
[0057] According to some embodiments of the present invention, a first flange 11 is formed on one side of the rear floor 10 by die casting, and a second flange is formed on one side of the rear shock absorber seat 20 by die casting, and the second flange is overlapped with the first flange 11 and riveted to each other. Figure 1 The connecting line between the middle rear floor 10 and the rear shock absorber seat 20 is the contour line after the first flange 11 and the second flange are overlapped. Since the first flange 11 and the second flange are both flanged and overlapped, Figure 1 Only the first flange position is indicated by the reference numeral 11 .
[0058] Since the first flange 11 and the second flange are both formed by die casting, they have smooth surfaces and relatively uniform thickness, so that the first flange 11 and the second flange match each other, which is conducive to achieving close contact and firm riveting of the two edges, reducing the relative movement between the two, and improving the connection stability between the rear floor 10 and the rear shock absorber seat 20. In addition, the riveted connection has good maintainability. If replacement or repair is required, it can be easily disassembled and reassembled with simple tools, which effectively reduces the maintenance cost.
[0059] Optionally, the first flange 11 and the second flange are riveted together by rivets 30 , and the rivets 30 interlock the first flange 11 and the second flange to achieve a stable connection.
[0060] According to some embodiments of the utility model, the first flange 11 includes: a first horizontal section 111, a first bending section 112, a second horizontal section 113, a second bending section 114 and a third horizontal section 115. One end of the first bending section 112 is connected to the first horizontal section 111, and an angle is formed between the first bending section 112 and the first horizontal section 111. The second horizontal section 113 connects the other end of the first bending section 112, and the second horizontal section 113 is arranged parallel to the first horizontal section 111. The second bending section 114 and the second horizontal section 113 have an angle, and the second bending section 114 and the first bending section 112 connect the two ends of the second horizontal section 113. The third horizontal section 115 connects the end of the second bending section 114 away from the second horizontal section 113, and the third horizontal section 115 is arranged parallel to the first horizontal section 111. The first flange 11 is a multi-fold section as a whole, which not only plays a connecting and supporting role, but also has a certain buffering effect on the vibration generated during the driving process of the vehicle. The arrangement of multiple folding sections also enhances the strength and stability of the first flange 11. For example, a certain angle is provided between the first bending section 112 and the first horizontal section 111, and a certain supporting force and connecting tension are formed through the angle, thereby enhancing the rigidity and anti-deformation ability of the first flange 11. The arrangement of multiple folding sections makes the connection between the rear floor 10 and the rear shock absorber seat 20 have a certain strength and rigidity, ensuring that the vehicle can withstand a certain load and impact, and stabilizing the vehicle's driving stability.
[0061] The embodiment of the present application further discloses a vehicle, including a rear shock absorber seat and a rear floor assembly 100 of an automobile.
[0062] Below, refer to the attached Figure 1 , describing a vehicle according to a specific embodiment of the present application.
[0063] The vehicle includes a rear shock absorber mount and a rear floor assembly 100 .
[0064] The rear shock absorber seat and rear floor assembly 100 includes a rear floor 10 and a rear shock absorber seat 20 which are independent of each other, and the rear shock absorber seat 20 is connected to the rear floor 10 .
[0065] The rear floor 10 and the rear shock absorber seat 20 are both made of materials that do not require heat treatment.
[0066] The rear floor panel 10 includes a first flange 11. The first flange 11 is formed by die casting on one side of the rear floor panel 10. The first flange 11 is a multi-fold segment.
[0067] The rear shock absorber seat 20 is an aluminum alloy member made of AlSi10MnMg material through integral die casting and T7 aging treatment. The rear shock absorber seat 20 includes a second flange, which is formed on one side of the rear shock absorber seat 20 through die casting.
[0068] The first flange 11 is overlapped with the second flange, and a glue layer is filled between the first flange 11 and the second flange. The first flange 11, the second flange and the glue layer are connected by the SPR connection process of the rivet 30.
[0069] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0070] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. An automobile rear shock absorber seat and rear floor assembly, characterized in that: include: The rear floor is an aluminum alloy part and is an integral die-cast part; The rear shock absorber seat is an aluminum alloy part, and the rear shock absorber seat is a die-casting part independent of the rear floor, and the rear shock absorber seat is connected to the rear floor.
2. The automobile rear shock absorber seat and rear floor assembly according to claim 1, characterized in that: The rear shock absorber seat is connected to the rear floor by riveting.
3. The automobile rear shock absorber seat and rear floor assembly according to claim 2, characterized in that: A rubber layer is filled between the rear shock absorber seat and the rear floor.
4. The automobile rear shock absorber seat and rear floor assembly according to claim 3, characterized in that: The rear shock absorber seat, the rear floor and the rubber layer are connected by self-piercing riveting.
5. The automobile rear shock absorber seat and rear floor assembly according to claim 3, characterized in that: The rear shock absorber seat and the rear floor are bonded by a glue layer and then connected by SPR.
6. The automobile rear shock absorber seat and rear floor assembly according to claim 1, characterized in that: The rear floor is an aluminum alloy part that does not require heat treatment, and the rear shock absorber seat is an aluminum alloy part that is die-cast and subjected to T7 aging treatment.
7. The automobile rear shock absorber seat and rear floor assembly according to claim 1, characterized in that: The rear floor and the rear shock absorber seat are both made of materials that do not require heat treatment.
8. The automobile rear shock absorber seat and rear floor assembly according to any one of claims 1 to 7, characterized in that: A first flange is formed on one side of the rear floor by die casting, and a second flange is formed on one side of the rear shock absorber seat by die casting. The second flange is overlapped with the first flange and connected by rivets.
9. The automobile rear shock absorber seat and rear floor assembly according to claim 8, characterized in that: The first flange comprises: The first horizontal section; a first bending section, one end of which is connected to the first horizontal section, and an angle is formed between the first bending section and the first horizontal section; a second horizontal segment, the second horizontal segment being connected to the other end of the first bending segment, and the second horizontal segment being arranged parallel to the first horizontal segment; a second bending section, wherein an angle is formed between the second bending section and the second horizontal section, and the second bending section and the first bending section connect two ends of the second horizontal section; A third horizontal segment, wherein the third horizontal segment is connected to an end of the second bending segment away from the second horizontal segment, and the third horizontal segment is arranged parallel to the first horizontal segment.
10. A vehicle, characterized in that: The invention comprises an automobile rear shock absorber seat and a rear floor assembly according to any one of claims 1 to 9.