Connecting structure of frameless vehicle door inner plate and reinforcer and vehicle

Abstract

The utility model relates to a connecting structure of a frameless vehicle door inner plate and a reinforcer and a vehicle. The connecting structure of the frameless vehicle door inner plate and the reinforcing part comprises the frameless vehicle door inner plate and the vehicle door inner plate reinforcing part, the frameless vehicle door inner plate and the vehicle door inner plate reinforcing part are assembled and fixed at a windowsill notch of the frameless vehicle door inner plate in a welding mode, and structural adhesive is arranged at the welding position. The utility model further provides a vehicle which comprises the connecting structure of the frameless vehicle door inner plate and the reinforcer. The utility model solves the problems that the existing frameless car door is low in strength at the windowsill notch, so that the integral strength of the car door windowsill line is low, and welding spots are easy to crack and rust.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts assembly, in particular to a connection structure between a frameless door inner panel and a reinforcement member and a vehicle. Background Art

[0002] The inner door panels and the inner door panel reinforcements of automobiles with window frames are usually connected by welding spots. The window frames and the inner door panels are welded together by spot welding to form an integral structure. The strength of the door welding assembly is improved to meet the daily use needs of users. However, for frameless doors, there is no window frame on the upper part of the frameless door, and the strength of the door welding assembly is significantly weaker than that of the door assembly structure with window frame welding. At the same time, due to the structural reasons itself, the inner door panel needs to be partially notched to avoid, resulting in the further weakening of the strength of the door welding assembly at the notch position at the door window sill line, thereby weakening the overall strength of the door window sill line. After customers open and close the door for a long time, the welds at the notch position of the door inner panel are prone to cracking, which further leads to weld failure and affects the welding strength at the door window sill line. The cracked welds cause the inner panel to crack and rust, affecting the appearance quality of the car inner panel and causing user complaints. At the same time, the weakened strength at the door window sill line position will also affect the safety of the vehicle.

[0003] CN 203637522 U discloses a rear root reinforcement for a car door inner panel window frame and a car door inner panel. The rear root reinforcement for the window frame is an integral stamped sheet metal part, which has a rear vertical frame matching welding plate that matches the rear vertical frame of the car door inner panel window frame, a sealing strip clip through hole is opened on the rear vertical frame matching welding plate at a position corresponding to the door sealing strip clip hole on the car door inner panel, a glass rear slide groove matching plate that matches the rear slide groove of the car door inner panel glass is provided on the upper left side of the rear vertical frame welding matching plate, an upper reinforcement matching welding plate that matches the rear end of the reinforcement on the car door inner panel is extended from the lower left side of the rear vertical frame welding matching plate, and a welding positioning hole is provided on the upper reinforcement matching welding plate. The rear root reinforcement for the window frame can strengthen the rear root of the car door inner panel window frame, and the rigidity of the rear root of the car door inner panel window frame of the car door inner panel using the rear root reinforcement for the window frame is improved, and the window frame and the part near the waistline of the car door are not easy to deform. The door inner panel is welded to the window frame to ensure overall strength, but it is not applicable to frameless door inner panels. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a connection structure and vehicle between a frameless door inner panel and a reinforcement member, so as to solve the problem that the existing frameless door has low strength at the window sill notch, resulting in weak overall strength of the door window sill line and prone to cracking and rusting of welds.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A connection structure between a frameless door inner panel and a reinforcement member comprises a frameless door inner panel and a door inner panel reinforcement member, wherein the frameless door inner panel and the door inner panel reinforcement member are assembled and fixed by welding at a window sill notch of the frameless door inner panel, and structural adhesive is arranged at the welding position.

[0007] According to the above-mentioned technical means, the frameless door inner panel and the door inner panel reinforcement are connected by a combination of welding and structural adhesive at the window sill gap of the frameless door inner panel, thereby effectively improving the structural strength of the window sill gap area and greatly reducing the risk of weld cracking. At the same time, arranging structural adhesive at the welding position can also play the role of sealing the weld, avoiding the risk of weld rusting due to contact with the environment, extending the service life of the door, and improving the safety performance of the vehicle, thereby effectively solving the problem of low strength of the existing frameless door at the window sill gap, resulting in weak overall strength of the door window sill line, and easy cracking and rusting of welds.

[0008] Preferably, the frameless door inner panel and the door inner panel reinforcement are connected at the window sill notch of the frameless door inner panel by using a plurality of welding points arranged at intervals.

[0009] By arranging a plurality of welding points at intervals at the window sill notch of the frameless door inner panel, the connection strength between the frameless door inner panel and the door inner panel reinforcement is effectively ensured.

[0010] Preferably, the structural adhesive is arranged around a plurality of the welding points to connect the frameless door inner panel and the door inner panel reinforcement.

[0011] By arranging structural adhesive around the welding points, not only the connection strength at the welding points is further improved, effectively avoiding the risk of welding point cracking, but also the welding points are sealed at the same time, further reducing the corrosion of the welding points, thus achieving the advantage of killing two birds with one stone.

[0012] Preferably, the door inner panel reinforcement is connected to the frameless door inner panel via a plurality of welding points arranged at intervals around the periphery.

[0013] Preferably, a cavity is formed between the frameless door inner panel and the door inner panel reinforcement, a plurality of welding points are arranged around the cavity, and the structural adhesive is arranged around the welding points.

[0014] By forming a cavity between the frameless door inner panel and the door inner panel reinforcement, the collision performance of the door is effectively improved.

[0015] Preferably, reinforcing ribs are formed on the door inner panel reinforcement between adjacent welding points.

[0016] By forming reinforcing ribs between adjacent weld points on the door inner panel reinforcement, the strength of the door inner panel reinforcement is further improved.

[0017] Preferably, the material thickness of the frameless door inner panel is between 0.7 and 0.8 mm, and the frameless door inner panel 1 is made of ultra-low carbon ultra-deep stamping steel plate DC06.

[0018] Preferably, the material thickness of the door inner panel reinforcement is between 1.2 and 1.5 mm, and the door inner panel reinforcement 2 is made of cold-rolled steel plate DC01.

[0019] Preferably, the structural adhesive is toughened structural adhesive CAW-IR01.

[0020] Compared with sealants, hemming adhesives and expansion adhesives, this toughened structural adhesive CAW-IR01 has better fatigue resistance and increased connection strength performance while achieving sealed welds.

[0021] The utility model also provides a vehicle, comprising the connection structure of the frameless door inner panel and the reinforcement member described in the utility model.

[0022] Beneficial effects of the utility model:

[0023] The connection structure of the frameless door inner panel and the reinforcement of the utility model connects the frameless door inner panel and the door inner panel reinforcement at the window sill notch of the frameless door inner panel by combining welding and structural adhesive, thereby effectively improving the structural strength of the window sill notch area and greatly reducing the risk of weld cracking. At the same time, arranging structural adhesive at the welding position can also play a role in sealing the weld, avoiding the risk of weld corrosion caused by contact with the environment, extending the service life of the door, and improving the safety performance of the vehicle, thereby effectively solving the problem of low strength at the window sill notch of the existing frameless door, resulting in weak overall strength of the door window sill line, and easy cracking and rusting of welds. The utility model has the advantages of simple structure, small number of parts and light weight, and has promotion and application value in the field of automobile parts assembly technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of the connection structure between the inner panel of a frameless door and a reinforcement member;

[0025] Figure 2 It is a partial view of the frameless door inner panel and reinforcement at the notch;

[0026] Figure 3 is a schematic diagram of the structure of the door inner panel reinforcement;

[0027] Figure 4 A schematic diagram of the structure of the door inner panel reinforcement and the structural adhesive assembly;

[0028] Figure 5 for Figure 2 Sectional view along AA;

[0029] Figure 6 for Figure 2 Cross-sectional view along the middle line BB;

[0030] Figure 7 for Figure 2 Cross-sectional view at the middle edge CC;

[0031] Figure 8 A partial view of the connection structure between the frameless door inner panel and the reinforcement;

[0032] Fig. 9 for Figure 8 Sectional view along the middle edge at DD;

[0033] Among them, 1-frameless door inner panel, 11-window sill notch; 2-door inner panel reinforcement, 21-reinforcement rib; 3-structural adhesive; 4-welding point; 5-cavity. DETAILED DESCRIPTION

[0034] The following will describe the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0035] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0036] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present application. However, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details. Example

[0037] like Figures 1 to 9 As shown, a connection structure between a frameless door inner panel and a reinforcement member includes a frameless door inner panel 1 and a door inner panel reinforcement member 2. The frameless door inner panel 1 and the door inner panel reinforcement member 2 are assembled and fixed by welding at a window sill notch 11 of the frameless door inner panel 1, and a structural adhesive 3 is arranged at the welding position.

[0038] By connecting the frameless door inner panel and the door inner panel reinforcement at the window sill gap of the frameless door inner panel by a combination of welding and structural adhesive, the structural strength of the window sill gap area is effectively improved, and the risk of weld cracking is greatly reduced. At the same time, arranging structural adhesive at the welding position can also play a role in sealing the weld, avoiding the risk of weld rusting due to contact with the environment, extending the service life of the door, and improving the safety performance of the vehicle, thereby effectively solving the problem of low strength of the existing frameless door at the window sill gap, resulting in weak overall strength of the door window sill line, and easy cracking and rusting of welds.

[0039] In some embodiments, in order to further effectively ensure the connection strength between the frameless door inner panel and the door inner panel reinforcement, a plurality of weld points 4 arranged at intervals are used at the window sill notch 11 of the frameless door inner panel 1 to effectively connect the frameless door inner panel 1 and the door inner panel reinforcement 2.

[0040] In some embodiments, in order to simultaneously improve the connection strength of the welds to avoid the risk of weld cracking, and to simultaneously achieve sealing of the welds to reduce corrosion of the welds, structural adhesive 3 is arranged around multiple welds 4 to connect the frameless door inner panel 1 and the door inner panel reinforcement 2, so that the welds 4 are completely wrapped and sealed by the structural adhesive 3.

[0041] In some embodiments, in addition to spot welding at the window sill notch 11 of the frameless door inner panel 1, welding points 4 are also used to connect other parts of the frameless door inner panel 1 and the door inner panel reinforcement 2, that is, the door inner panel reinforcement 2 is connected to the frameless door inner panel 1 by multiple welding points 4 arranged at intervals on all sides, so as to improve production efficiency while ensuring the uniformity of connection strength and avoid the risk of cracking of welds due to weak connection strength in a certain part.

[0042] In some embodiments, in order to improve the collision performance of the vehicle door, a cavity 5 configuration is formed in the middle area where the frameless door inner panel 1 and the door inner panel reinforcement 2 are connected by welding points 4, that is, a cavity 5 is formed between the frameless door inner panel 1 and the door inner panel reinforcement 2, and multiple welding points 4 are set to be evenly arranged around the cavity 5. At the same time, in order to achieve sealing of the welding points 4, structural adhesive 3 is arranged around the welding points 4.

[0043] In some embodiments, the cavity 5 has a depth greater than 26 mm and a length greater than 150 mm.

[0044] In some embodiments, in order to improve the overall strength of the frameless door, a reinforcing rib 21 is formed between adjacent welding points 4 on the door inner panel reinforcement 2 .

[0045] Exemplarily, the reinforcing rib 21 is a semicircular reinforcing rib with a diameter greater than 12 mm.

[0046] In some embodiments, the material thickness of the frameless door inner panel 1 is between 0.7 and 0.8 mm, and the frameless door inner panel 1 is made of ultra-low carbon ultra-deep stamping steel plate DC06.

[0047] In some embodiments, the material thickness of the vehicle door inner panel reinforcement 2 is between 1.2 and 1.5 mm, and the vehicle door inner panel reinforcement 2 is made of cold-rolled steel plate DC01.

[0048] In some embodiments, the structural adhesive is a toughened structural adhesive CAW-IR01. Compared with sealants, hemming adhesives, and expansion adhesives, this toughened structural adhesive has better fatigue resistance and connection strength performance while achieving sealed welds.

[0049] In some embodiments, a vehicle is also provided, which includes the connection structure between the frameless door inner panel and the reinforcement member described above.

[0050] To sum up, the connection structure of the frameless door inner panel and the reinforcement and the vehicle of the utility model, by connecting the frameless door inner panel and the door inner panel reinforcement at the window sill notch of the frameless door inner panel by a combination of welding and structural adhesive, effectively improves the structural strength of the window sill notch area and greatly reduces the risk of weld cracking. At the same time, the structural adhesive is arranged at the welding position, which can also play the role of sealing the weld, avoiding the risk of weld corrosion caused by contact with the environment, extending the service life of the door, and improving the safety performance of the vehicle, thereby effectively solving the problem of low strength of the existing frameless door at the window sill notch, resulting in weak overall strength of the door window sill line, and easy cracking and rusting of welds. It has the advantages of simple structure, small number of parts and lightweight, and has promotion and application value in the field of automobile parts assembly technology.

[0051] The above embodiments are merely illustrative of the principles and effects of the present utility model, and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.

Claims

1. A connection structure between a frameless door inner panel and a reinforcement member, characterized in that: The invention comprises a frameless vehicle door inner panel (1) and a vehicle door inner panel reinforcement (2), wherein the frameless vehicle door inner panel (1) and the vehicle door inner panel reinforcement (2) are assembled and fixed at a window sill notch (11) of the frameless vehicle door inner panel (1) by welding, and a structural adhesive (3) is arranged at the welding position.

2. The connection structure of the frameless door inner panel and the reinforcement member according to claim 1, characterized in that: The frameless vehicle door inner panel (1) and the vehicle door inner panel reinforcement (2) are connected at a window sill notch (11) of the frameless vehicle door inner panel (1) using a plurality of welding points (4) arranged at intervals.

3. The connection structure of the frameless door inner panel and the reinforcement member according to claim 2, characterized in that: The structural adhesive (3) is arranged around the plurality of welding points (4) to connect the frameless door inner panel (1) and the door inner panel reinforcement (2).

4. The connection structure of the frameless door inner panel and the reinforcement member according to claim 2, characterized in that: The periphery of the vehicle door inner panel reinforcement (2) is connected to the frameless vehicle door inner panel (1) via a plurality of welding points (4) arranged at intervals.

5. The connection structure of the frameless door inner panel and the reinforcement member according to claim 2, characterized in that: A cavity (5) is formed between the frameless door inner panel (1) and the door inner panel reinforcement (2), a plurality of welding points (4) are arranged around the cavity (5), and the structural adhesive (3) is arranged around the welding points (4).

6. The connection structure of the frameless door inner panel and the reinforcement member according to claim 2, characterized in that: A reinforcing rib (21) is also formed on the vehicle door inner panel reinforcement (2) between adjacent welding points (4).

7. The connection structure of the frameless door inner panel and the reinforcement member according to claim 1, characterized in that: The material thickness of the frameless door inner panel (1) is between 0.7 and 0.8 mm.

8. The connection structure of the frameless door inner panel and the reinforcement member according to claim 1, characterized in that: The material thickness of the door inner panel reinforcement (2) is between 1.2 and 1.5 mm.

9. The connection structure of the frameless door inner panel and the reinforcement member according to claim 1, characterized in that: The structural adhesive (3) is a toughened structural adhesive.

10. A vehicle, characterized in that: It comprises a connection structure between a frameless door inner panel and a reinforcement member as claimed in any one of claims 1 to 9.

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