Door lock reinforcing plate of automobile back door

Abstract

The utility model relates to an automobile back door lock reinforcing plate which comprises a door lock reinforcing plate body, and the two ends and the middle of the door lock reinforcing plate body are fixed parts. The first welding face and the second welding face are welded with the back door inner plate through spot welding, and the first supporting face is provided with a gluing groove filled with anti-seismic glue to be bonded with the back door outer plate. The first welding surface and the second welding surface are connected through a second reinforcing rib; the first supporting face is formed by extending the second welding face outwards to the back door inner plate and then folding the second welding face upwards, the door lock reinforcing plate is not welded to the back door sealing face, the influence of welding spots on the sealing face on sealing of the back door is avoided, meanwhile, the first supporting face plays a role in supporting the back door outer plate, and the concave resistance of the back door outer plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile body parts, in particular to a rear door lock reinforcement plate of an automobile. Background Art

[0002] Most of the existing tailgate door lock reinforcement plates are designed in a stepped shape, so their structure is simple and flat, and their rigidity is weak, which cannot fully play the role of strengthening the tailgate. Chinese patent CN209888615U discloses a tailgate door lock reinforcement structure, in which the reinforcement plate is connected to the tailgate outer panel through a local support structure, thereby solving the problem of cracking of the tailgate assembly sheet metal and welding points, and can increase the overall strength and rigidity of the tailgate sheet metal. However, the above patent is not limited to the door lock reinforcement structure of the above patent. There are welding points on the sealing surface during welding, which destroys the integrity of the sealing surface, resulting in poor sealing between the sealing surface and the sealing strip, affecting the sealing and NVH performance of the tailgate.

[0003] In view of this, the utility model aims to propose a car tailgate door lock reinforcement plate, which ensures the tightness of the sealing surface at the door lock and the sealing strip, improves the sealing of the tailgate, strengthens the support of the door lock reinforcement plate to the tailgate outer panel, and improves the local dent resistance of the tailgate outer panel. Utility Model Content

[0004] In order to solve the above problems, the present application provides a car tailgate lock reinforcement plate, which can effectively improve the fit between the tailgate sealing surface and the stopper, while improving the sealing performance of the tailgate, and also improving the overall stiffness of the tailgate lock and the dent resistance of the tailgate outer panel.

[0005] The technical solution provided by the present application is as follows: It is characterized in that it includes: the door lock reinforcement plate, including a door lock reinforcement plate body, the door lock reinforcement plate body is fixed to the rear door inner panel by a first welding surface and a second welding surface; a pair of first supporting surfaces are fixed to the rear door outer panel, a pair of first reinforcing ribs are provided on the first welding surface, the first welding surface and the second welding surface are connected by a second reinforcing rib, and a pair of third reinforcing ribs connect the second welding surface and the first supporting surface.

[0006] A pair of first reinforcing ribs are located on the left and right sides of the first welding surface, and the second reinforcing ribs connect the first welding surface with the second welding surface. The first reinforcing ribs are perpendicular to and connected with the second reinforcing ribs.

[0007] Furthermore, the first supporting surface is obtained by folding the lower edge of the second welding surface upward to the rear door outer panel, and then folding upward along the rear door outer panel.

[0008] Furthermore, a pair of first supporting surfaces evenly divides the second welding surface into three equal parts; a pair of third reinforcing ribs are longitudinally and parallelly arranged at the folding part between the second welding surface and the first supporting surface.

[0009] Furthermore, the left and right edges of the first welding surface and the second welding surface each have a reinforcing flange that is tilted upward and outward.

[0010] Furthermore, the first welding surface and the second welding surface are connected by a pair of first reinforcing ribs arranged transversely, and the first reinforcing ribs and the rear door inner panel form a cavity.

[0011] Furthermore, when the first welding surface and the second welding surface are welded to the inner panel of the tailgate, the integrity of the tailgate sealing surface needs to be retained.

[0012] Furthermore, the height of the first reinforcing rib is less than or equal to the height of the second reinforcing rib.

[0013] Furthermore, the first welding surface and the second welding surface are respectively welded to the rear door inner panel by spot welding, and the first supporting surface is provided with a glue coating groove for filling with anti-seismic glue to bond with the rear door outer panel.

[0014] Furthermore, a lock body mounting hole is opened in the middle of the second welding surface, and the tailgate lock body is mounted on the tailgate through the lock body mounting hole.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The door lock reinforcement plate body is not welded to the sealing surface of the rear door, avoiding the presence of welding spots on the sealing surface of the rear door, improving the sealing performance of the sealing surface of the rear door and the stopper, which is beneficial to improving the NVH performance of the entire vehicle, and at the same time increasing the coating area of ​​the rear door inner panel and the door lock reinforcement plate during electrophoresis. The door lock reinforcement plate supports the rear door outer panel, improves the local dent resistance of the rear door outer panel, and at the same time improves the local strength of the middle part of the lower section of the rear door. The lock body reinforcement plate is installed through the lock body installation hole and the lock body positioning hole on the inner panel, and its structure can be adapted to the subsequent changes in the shape of the rear door.

[0017] The door lock reinforcement plate body is provided with reinforcement ribs, which improves the rigidity of the door lock reinforcement plate and optimizes the effect of stamping. The two sides thereof are provided with flange structures, which further improve the overall rigidity of the reinforcement plate and improve the local mode of the door lock reinforcement plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the cutaway position of the assembly drawing of this application.

[0019] Figure 2 It is a cross-sectional view of the assembly of this application.

[0020] Figure 3 This is the cutting position of the door lock reinforcement plate body of this application.

[0021] Figure 4 It is a cross-sectional view of the door lock reinforcement plate body of the present application.

[0022] Figure 5 This is an isometric view of the door lock reinforcement plate of this application.

[0023] Explanation of the accompanying drawings: 1-rear door inner panel; 2-door lock reinforcement plate body; 21-first welding surface; 22-first reinforcement rib; 23-second reinforcement rib; 24-second welding surface; 25-third reinforcement rib; 26-first supporting surface; 3-door lock; 4-sealing surface; 5-rear door outer panel. DETAILED DESCRIPTION

[0024] The following is combined with the accompanying drawings Figure 2 , Figure 4 The above-mentioned words "first, second" and the like do not represent the number of the indicated features, but are specific names of a certain structure.

[0025] In the application of the utility model, the words such as "upper" and "lower" that describe the position and position relationship are used only to describe the utility model or simplify the description according to the position and position relationship of the components shown in the drawings. Therefore, they do not indicate the specific position relationship that must exist between the components.

[0026] The door lock reinforcement plate body (2) is connected to the rear door outer panel (5) via anti-vibration adhesive. The door lock reinforcement plate body (2) provides support for the rear door outer panel (5). The anti-vibration adhesive is filled in the adhesive coating groove of the door lock reinforcement plate (2) so that the connection position of the door lock reinforcement plate body (2) and the rear door outer panel (5) fits well, thereby improving the NVH performance of the entire vehicle.

[0027] A pair of first supporting surfaces (26) are designed to be one on each side, with a spacing of 30 mm, which provides space for a welding gun when welding the second welding surface (24) to the rear door inner panel (1), while reducing the size of the door lock reinforcement plate body (2) and reducing the design cost.

Claims

1. A car rear door lock reinforcement plate, characterized in that: include: A door lock reinforcement plate body (2), wherein the door lock reinforcement plate body (2) is fixed to a back door inner plate (1) by a first welding surface (21) and a second welding surface (24); a pair of first supporting surfaces are fixed to a back door outer plate (5); a pair of first reinforcing ribs (22) are provided on the first welding surface (21); the first welding surface (21) and the second welding surface (24) are joined by a second reinforcing rib (23); and a pair of third reinforcing ribs (25) connect the second welding surface (24) and the first supporting surface (26).

2. The automobile tailgate lock reinforcement plate according to claim 1, characterized in that: The first supporting surface (26) is obtained by folding the lower edge of the second welding surface (24) upward to the rear door outer panel (5), and then folding upward along the rear door outer panel (5).

3. The automobile tailgate lock reinforcement plate according to claim 1 or claim 2, characterized in that: A pair of first supporting surfaces (26) evenly divide the second welding surface (24) into three equal parts; a pair of third reinforcing ribs (25) are longitudinally arranged in parallel at the folding part between the second welding surface (24) and the first supporting surface (26).

4. The automobile tailgate lock reinforcement plate according to claim 1, characterized in that: The left and right edges of the first welding surface (21) and the second welding surface (24) respectively have a reinforcing flange that is tilted upward and outward.

5. The automobile tailgate lock reinforcement plate according to claim 1, characterized in that: The first welding surface (21) and the second welding surface (24) are connected by a pair of first reinforcing ribs (22) arranged transversely, and the first reinforcing ribs (22) and the rear door inner panel form a cavity.

6. The automobile tailgate lock reinforcement plate according to claim 1, characterized in that: When the first welding surface (21) and the second welding surface (24) are welded to the rear door inner plate (1), the integrity of the rear door sealing surface must be retained.

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