A sliding door rail fixing bracket structure

Abstract

The utility model relates to the technical field of vehicle body sliding door systems, and in particular to a sliding door slide rail fixing bracket structure, comprising a lower sliding rail and a middle sliding rail supporting the sliding door, and an upper sliding rail providing a guide, a side surface of the middle sliding rail is welded with an "J"-shaped bracket, the lower side of the middle sliding rail is a load-bearing surface, a supporting surface is arranged on the lower side of the bracket, the supporting surface extends to the lower side of the load-bearing surface, and the supporting surface is fixed to the lower side of the load-bearing surface, and by arranging the supporting surface on the lower side of the bracket, the supporting stiffness of the load-bearing surface of the middle sliding rail is ensured by utilizing the supporting surface without increasing the thickness of the sliding rail plate, thereby achieving a weight reduction of about 0.3kg, and at the same time being able to improve the overall opening and closing durability of the sliding door.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle body sliding door systems, in particular to a sliding door slide rail fixing bracket structure. Background Art

[0002] The support of the sliding door system usually provides load-bearing and guidance for the lower and middle sliding rails, and the upper sliding rail provides guidance. The lower sliding rail is welded to the vehicle body; the middle sliding rail is currently usually welded with a "J"-shaped bracket, which is fixed to the vehicle body through the bracket; the upper sliding rail is welded with an "L"-shaped bracket, which is fixed to the vehicle body through the bracket. There is no support surface under the middle sliding rail bracket. In order to meet the support stiffness of the sliding rail load-bearing surface, the thickness of the plate needs to be increased. This not only increases the weight of the entire vehicle, but also weakens the durability test performance of the sliding door opening and closing. The lower load-bearing surface of the sliding rail contacts the hinge load-bearing wheel, and the lower load-bearing surface cannot be arranged with structures and welding points. The physical defects of the welding points will cause abnormal noise when the hinge load-bearing wheel rolls over. Therefore, in the existing technical solutions, no structure is set on the lower side of the sliding rail bracket to support the sliding rail load-bearing surface. How can the support stiffness of the sliding rail load-bearing surface be guaranteed without increasing the thickness of the sliding rail plate, while improving the durability of the sliding door opening and closing.

[0003] Therefore, a device is urgently needed to solve the above problems. Utility Model Content

[0004] In view of the above problems, the present invention is proposed to provide a sliding door rail fixing bracket structure that overcomes the above problems or at least partially solves the above problems, and can ensure the supporting stiffness of the load-bearing surface of the rail without increasing the thickness of the rail plate.

[0005] Specifically, the utility model provides a sliding door rail fixing bracket structure, including a lower sliding rail and a middle sliding rail supporting the sliding door, and an upper sliding rail providing guidance, a "J"-shaped bracket is welded to the side of the middle sliding rail, the lower side of the middle sliding rail is a load-bearing surface, a supporting surface is arranged on the lower side of the bracket, the supporting surface extends to the lower side of the load-bearing surface, and the supporting surface is fixed to the lower side of the load-bearing surface.

[0006] By setting a support surface on the lower side of the bracket, the support surface is used to ensure the support stiffness of the middle slide rail load-bearing surface without increasing the thickness of the slide rail plate, which can achieve a weight reduction of about 0.3kg and improve the overall opening and closing durability of the sliding door.

[0007] Optionally, at the point where the middle slide rail connects to the sliding door, the bracket wraps around the middle slide rail. Since the point where the middle slide rail connects to the sliding door is the connection point between the middle slide rail and the sliding door and is subjected to the greatest force, its structure needs to increase the contact area between the bracket and the middle slide rail. Similarly, the bracket structure at the connection point also needs to increase the coverage area of ​​the middle slide rail to ensure the connection stability between the middle slide rail and the sliding door.

[0008] Optionally, the support surface and the load-bearing surface are connected by glue. When the glue connection is used, since the load-bearing surface of the middle slide rail is in contact with the hinge load-bearing wheel, the structure and welding points cannot be arranged on the load-bearing surface. Physical defects of the welding points will cause abnormal noise when the hinge load-bearing wheel rolls over. Therefore, the glue connection is used to avoid abnormal noise caused by structural protrusions on the load-bearing surface of the middle slide rail when the hinge load-bearing wheel rolls over.

[0009] Optionally, a glue coating groove is provided in the support surface, and structural glue is applied in the glue coating groove. The setting of the glue coating groove can provide convenience for the subsequent application of the structural glue, and avoid lack of glue holding space when the structural glue is applied, resulting in a bulge on the load-bearing surface of the middle slide rail after the structural glue condenses, causing abnormal noise when the subsequent hinge load-bearing wheel rolls over.

[0010] Optionally, the glue coating groove is arranged along the length direction of the supporting surface, which can provide sufficient glue holding space for the structural glue.

[0011] Optionally, the support surface and the load-bearing surface are welded together, and the welding is seamless electric welding. The support surface and the load-bearing surface can also be connected by welding. However, in order to avoid abnormal noise caused by physical defects during welding when the hinge load-bearing wheel rolls over, it is necessary to adopt a seamless electric welding process and spot weld them to the middle slide rail.

[0012] Optionally, welding spots are provided on the side surfaces of the bracket except for the contact load-bearing surface, and the welding spots on the bracket can provide convenience for welding.

[0013] In the sliding rail fixing bracket structure of the sliding door of the present invention, a supporting surface is arranged on the lower side of the bracket. The supporting surface is utilized to ensure the supporting stiffness of the load-bearing surface of the middle sliding rail without increasing the thickness of the sliding rail plate, thereby achieving a weight reduction of about 0.3kg and improving the overall opening and closing durability of the sliding door. By utilizing the adhesive connection method, since the load-bearing surface of the middle sliding rail is in contact with the hinge load-bearing wheel, the load-bearing surface cannot be arranged with structures and welding points, and physical defects of the welding points may cause abnormal noises when the hinge load-bearing wheel rolls over. Therefore, by utilizing the adhesive connection method, it is avoided that the load-bearing surface of the middle sliding rail has structural protrusions, which may cause abnormal noises when the hinge load-bearing wheel rolls over.

[0014] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0016] Figure 1 is a schematic structural diagram of a sliding door according to an embodiment of the utility model;

[0017] Figure 2 is a schematic structural diagram of a middle slide rail according to an embodiment of the utility model;

[0018] Figure 3 is a schematic structural diagram of a bracket according to an embodiment of the utility model;

[0019] Figure 4 is a schematic structural diagram of a side surface of a bracket according to an embodiment of the utility model;

[0020] Figure 5 It is a schematic structural diagram of a bracket where a middle slide rail is connected to a sliding door according to an embodiment of the utility model.

[0021] Figure 6 It is a schematic structural diagram of the support surface where the middle slide rail is connected to the sliding door according to an embodiment of the utility model.

[0022] Component number description

[0023] 1. Sliding door; 2. Lower sliding rail; 3. Middle sliding rail; 4. Upper sliding rail; 5. Bracket; 6. Support surface; 7. Glue coating groove; 8. Welding point. DETAILED DESCRIPTION

[0024] Refer to the following Figures 1 to 4 To describe an embodiment of the utility model. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0025] Unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix", "couple" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present utility model according to the specific circumstances.

[0026] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 may be combined in any one or more embodiments or examples in a suitable manner.

[0028] like Figure 1 As shown, a sliding door rail fixing bracket structure includes a lower sliding rail 2 and a middle sliding rail 3 supporting a sliding door 1, and an upper sliding rail 4 providing guidance. A "J"-shaped bracket 5 is welded to the side of the middle sliding rail 3, and the lower side of the middle sliding rail 3 is a load-bearing surface. A supporting surface 6 is arranged on the lower side of the bracket 5, and the supporting surface 6 extends to the lower side of the load-bearing surface, and the supporting surface 6 is fixed to the lower side of the load-bearing surface.

[0029] By providing a support surface 6 on the lower side of the bracket 5, the support surface 6 is utilized to ensure the support stiffness of the load-bearing surface of the middle slide rail 3 without increasing the thickness of the slide rail plate, thereby achieving a weight reduction of about 0.3 kg and improving the overall opening and closing durability of the sliding door 1.

[0030] like Figure 5 , Figure 6 As shown, in one embodiment of the utility model, at the place where the middle slide rail 3 is connected to the sliding door 1, the bracket 5 wraps the middle slide rail 3. Since the place where the middle slide rail 3 is connected to the sliding door 1 is the connection point between the middle slide rail 3 and the sliding door 1 and is subjected to the greatest force, its structure needs to increase the contact area between the bracket 5 and the middle slide rail 3. Similarly, the bracket 5 structure located at the connection also needs to increase the coverage area of ​​the middle slide rail 3, thereby ensuring the connection stability between the middle slide rail 3 and the sliding door 1.

[0031] In one embodiment of the utility model, the support surface 6 is glued to the load-bearing surface. By using the glue connection, since the load-bearing surface of the middle slide rail 3 is in contact with the hinge load-bearing wheel, the structure and welding point 8 cannot be arranged on the load-bearing surface. Physical defects of the welding point 8 will cause abnormal noise when the hinge load-bearing wheel rolls over. Therefore, by using the glue connection, it is avoided that the load-bearing surface of the middle slide rail 3 produces structural protrusions, which will cause abnormal noise when the hinge load-bearing wheel rolls over.

[0032] In one embodiment of the utility model, a glue coating groove 7 is provided in the support surface 6, and structural glue is applied in the glue coating groove 7. The setting of the glue coating groove 7 can provide convenience for the subsequent application of the structural glue, and avoid the lack of glue space when the structural glue is applied, resulting in a bulge on the load-bearing surface of the middle slide rail 3 after the structural glue is condensed, resulting in abnormal noise when the subsequent hinge load-bearing wheel rolls over.

[0033] In an embodiment of the present invention, the glue coating groove 7 is arranged along the length direction of the support surface 6, which can provide sufficient glue holding space for the structural glue.

[0034] In one embodiment of the utility model, the support surface 6 and the load-bearing surface are welded together, and the welding is seamless electric welding. The support surface 6 and the load-bearing surface can also be connected by welding. However, in order to avoid abnormal noise caused by physical defects during welding when the hinge load-bearing wheel rolls over, it is necessary to adopt a seamless electric welding process and spot weld it with the middle slide rail 3.

[0035] In an embodiment of the present invention, welding points 8 are provided on the side surfaces of the bracket 5 except for the contact load-bearing surface. The welding points 8 on the bracket 5 can provide convenience for welding.

[0036] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A sliding door rail fixing bracket structure, comprising a lower sliding rail and a middle sliding rail for supporting the sliding door, and an upper sliding rail for providing guidance, a "J"-shaped bracket is welded on the side of the middle sliding rail, and the lower side of the middle sliding rail is a load-bearing surface, characterized in that: A support surface is arranged on the lower side of the bracket, the support surface extends to the lower side of the load-bearing surface, and the support surface is fixed to the lower side of the load-bearing surface.

2. The sliding door rail fixing bracket structure according to claim 1, characterized in that: At the place where the middle slide rail is connected to the sliding door, the bracket wraps the middle slide rail.

3. The sliding door rail fixing bracket structure according to claim 1 or 2, characterized in that: The supporting surface and the load-bearing surface are connected by glue.

4. The sliding door rail fixing bracket structure according to claim 3, characterized in that: A glue coating groove is provided in the supporting surface, and structural glue is applied in the glue coating groove.

5. The sliding door rail fixing bracket structure according to claim 4, characterized in that: The glue coating groove is arranged along the length direction of the supporting surface.

6. The sliding door rail fixing bracket structure according to claim 1 or 2, characterized in that: The supporting surface and the load-bearing surface are welded together, and the welding is traceless electric welding.

7. The sliding door rail fixing bracket structure according to claim 1 or 2, characterized in that: The side surfaces of the bracket other than the contact load-bearing surface are provided with welding spots.

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