Sliding door threshold assembly and automobile

Abstract

The sliding door threshold assembly is characterized in that the sliding door threshold assembly comprises a threshold upper box body and a threshold lower box body, the upper end face of the threshold upper box body is connected to the lower portion of a warehouse floor, and a box body connecting piece is arranged at the connecting position of the threshold upper box body and the threshold lower box body; the sliding door lower guide rail is arranged below the box body connecting piece, and the sliding door threshold assembly is arranged between a vehicle body longitudinal beam and a side wall assembly. According to the sliding door threshold assembly and the automobile, the problems that a sliding door threshold is poor in rigidity performance, and the bearing space of a warehouse is occupied are solved; the assembly has the advantages of being light in weight, low in cost, excellent in structural performance, large in bearing space and the like, the rigidity performance of the threshold is greatly improved, the effective bearing space of a warehouse is ensured, and the assembly has high practicability and good application prospects.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and more specifically, relates to a sliding door sill assembly and an automobile. Background Technique

[0002] With the development of the automobile industry, structural lightweight and performance optimization have become the trend of automobile development. Especially in the field of commercial vehicles mainly for logistics transportation, large cargo space, strong load-bearing capacity, and stable body structure are the market demands for logistics transport vehicles.

[0003] Most of the sliding door sills in the prior art have weak stiffness performance, which affects the sliding effect of the sliding door and even causes the sliding door to fail. For some vehicle models, due to the boarding height problem, boarding steps are designed at the body sill. The design of the boarding steps occupies the cargo space to a certain extent, making the body load-bearing space unable to be effectively utilized.

[0004] Patent application publication number CN113650684A discloses a sliding door sill structure for an electric vehicle model and an automobile provided with the sill structure. The sliding door sill structure includes a slide rail box assembly and a sill side beam. Among them, the sill side beam includes a first side beam plate and a second side beam plate. The first side beam plate and the second side beam plate enclose an installation cavity, and through holes penetrating the first side beam plate, the second side beam plate, and the installation cavity are provided on the first side beam plate and the second side beam plate. The slide rail box assembly is arranged in the installation cavity, and a part of it protrudes through the through hole on the second side beam plate and is above the floor surface. Since the battery pack of the automobile is arranged below the floor surface, and the slide rail box assembly is above the floor surface in the vertical direction, the slide rail box assembly will not occupy the layout space of the battery pack when extending horizontally into the vehicle. The sliding door sill structure for the electric vehicle model and the automobile provided with the sill structure are arranged above the floor surface, occupying space and having poor structural stability. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problems existing in the prior art, and provide a sliding door sill assembly and an automobile with good structural performance, improved sill stiffness performance, and ensured effective load-bearing space for the cargo hold.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows: The sliding door sill assembly provided is characterized in that it includes an upper sill box body and a lower sill box body. The upper end surface of the upper sill box body is connected below the cargo hold floor. A box body connecting piece is provided at the connection between the upper sill box body and the lower sill box body. The sliding door lower guide rail is arranged below the box body connecting piece. The sliding door sill assembly is arranged between the body longitudinal beam and the side wall assembly.

[0007] To make the above technical solution more detailed and specific, the utility model also provides the following further preferred technical solutions to obtain satisfactory practical effects:

[0008] The upper box body of the sill includes an upper box body main body. The cross-section of the upper box body main body is L-shaped and extends along the vehicle body length direction. The upper end of the box body main body is a horizontally arranged top surface, and the inner edge of the top surface extends downward along the Z direction to form an upper connecting surface.

[0009] A plurality of reinforcing ribs are arranged at intervals in the length direction of the upper box body main body.

[0010] The lower box body of the sill includes a lower box body main body. The cross-section of the lower box body main body is L-shaped and extends along the vehicle body length direction. The lower end of the lower box body main body is a horizontally arranged bottom surface, and the inner edge of the bottom surface extends upward along the Z direction to form a lower connecting surface, which is connected to the upper connecting surface of the upper box body of the sill.

[0011] A plurality of lower box body reinforcing ribs are arranged at intervals in the length direction of the lower box body main body.

[0012] The overall cross-section of the sliding door lower guide rail is a U-shaped cross-section and extends along the sliding direction of the sliding door; the guide wheels of the sliding door hinge are arranged in the sliding door lower guide rail.

[0013] The box body connecting piece shown includes a connecting piece main body. The cross-section of the connecting piece main body is an L-shaped structure, and a plurality of connecting piece reinforcing ribs are arranged at intervals in the length direction of the connecting piece main body.

[0014] The box body connecting piece is connected to the sliding door lower guide rail by welding, and a lower strengthening bracket is welded at the end of the box body connecting piece; the upper box body of the sill is connected to the box body connecting piece by welding, and a first upper strengthening bracket and a second upper strengthening bracket are arranged at both ends of the welded part of the upper box body of the sill and the box body connecting piece.

[0015] Flanging structures are provided at both the front and rear ends of the upper box body and the lower box body of the sill.

[0016] A vehicle is provided with the sliding door sill assembly described above. It is characterized in that: the sliding door sill assembly is located outside the vehicle body longitudinal beam and is connected to the vehicle body longitudinal beam through a support plate and a sealing plate.

[0017] Compared with the prior art, the present invention has the following advantages: The sliding door sill assembly and the vehicle of the present invention solve the problems of weak stiffness performance of the sliding door sill and occupation of the cargo hold carrying space; the assembly has the advantages of light weight, low cost, excellent structural performance, large carrying space, etc., greatly improving the stiffness performance of the sill, ensuring the effective carrying space of the cargo hold, and having strong practicability and good application prospects. Description of the Drawings

[0018] The following briefly describes the content expressed by the drawings of this specification and the marks in the drawings:

[0019] Figure 1 Schematic structural diagram of the sliding door sill assembly of the present utility model;

[0020] Figure 2 Schematic structural diagram of the A-A cross-section in the present utility model;

[0021] Figure 3 Schematic structural diagram of the upper box body of the sill in the present utility model;

[0022] Figure 4 Partially enlarged structural diagram of the stiffening rib of the upper box body of the sill in the present utility model;

[0023] Figure 5 Schematic structural diagram of the lower box body of the sill in the present utility model;

[0024] Figure 6 Schematic structural diagram of the secondary sub-assembly of the sliding door sill of the present utility model;

[0025] Figure 7 Schematic structural diagram of the sub-assembly of the sliding door sill of the present utility model;

[0026] Figure 8 Schematic structural diagram of the installation position of the sliding door sill assembly of the present utility model on the vehicle body;

[0027] Figure 9 Schematic structural diagram of the installation position of the sliding door sill assembly of the present utility model on the vehicle body.

[0028] The markings in the figure are:

[0029] 1. Upper box body of the sill; 2. Lower box body of the sill; 3. Box body connecting piece; 4. Lower guide rail of the sliding door; 5. First upper strengthening bracket; 6. Lower strengthening bracket; 7. Second upper strengthening bracket; 8. Cargo floor; 9. Side wall assembly; 10. Vehicle body longitudinal beam; 11. Sealing plate; 12. Support plate;

[0030] 100. Sliding door sill assembly

[0031] 101. Upper box body body; 102. First stiffening rib of the upper box body; 103. Second stiffening rib of the upper box body; 104. Flange of the upper box body;

[0032] 201. Lower box body body; 202. Stiffening rib of the lower box body; 203. Flange of the lower box body;

[0033] 301. Connecting piece body; 302. Stiffening rib of the connecting piece. Specific implementation mode

[0034] The following further describes in detail the specific implementation manners of the present utility model with reference to the accompanying drawings and through the description of the embodiments.

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing the present utility model 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. Therefore, it should not be construed as a limitation to the present utility model.

[0036] The sliding door sill assembly of the present utility model, as Figure 1 , 2 shown in, the sliding door sill assembly 100 includes an upper sill box body 1, a lower sill box body 2, a box body connecting member 3, and a sliding door lower guide rail 4. The upper end surface of the upper sill box body 1 is connected below the cargo compartment floor 8. A box body connecting member 3 is provided at the connection between the upper sill box body 1 and the lower sill box body 2. The sliding door lower guide rail 4 is provided below the box body connecting member 3. The sliding door sill assembly 100 is arranged between the vehicle body longitudinal beam and the side wall assembly.

[0037] In the present utility model, as Figure 3 , 4 shown in, the upper sill box body 1 includes an upper box body main body 101. The cross-section of the upper box body main body 101 is L-shaped and extends along the vehicle body length direction. The upper end of the box body main body 101 is a horizontally arranged top surface. The inner edge of the top surface extends downward along the Z direction to form an upper connection surface, which is connected to the lower connection surface of the lower sill box body 2 to ensure sufficient structural stiffness. A plurality of spaced-apart reinforcing ribs are provided in the length direction of the upper box body main body 101. The reinforcing ribs include a first upper box body reinforcing rib 102 and a second upper box body reinforcing rib 103. The first upper box body reinforcing rib 102 is a rectangular reinforcing rib, and the second upper box body reinforcing rib 103 is a triangular reinforcing rib to further increase the structural strength.

[0038] In the present utility model, as Figure 5 shown in, the lower sill box body 2 includes a lower box body main body 201. The cross-section of the lower box body main body 201 is L-shaped and extends along the vehicle body length direction. The lower end of the lower box body main body 201 is a horizontally arranged bottom surface, which is arranged parallel to the top surface of the upper box body. The inner edge of the bottom surface extends upward along the Z direction to form a lower connection surface, which is connected to the upper connection surface of the upper sill box body 1. A plurality of spaced-apart lower box body reinforcing ribs 202 are provided in the length direction of the lower box body main body 201.

[0039] In the present utility model, as Figure 6 , 7As shown in the figure, the box body connector 3 is connected between the upper and lower box bodies, including a connector body 301. The cross-section of the connector body 301 is in an L-shaped structure, and a plurality of connector reinforcing ribs 302 are arranged at intervals in the length direction of the connector body.

[0040] In the present utility model, several reinforcing ribs are arranged on the surface of the upper box body 1 of the door sill. The overall cross-section is in an L-shaped structure. The upper side is a horizontally arranged top surface, and the edge of the top surface extends downward in the Z direction to form an upper connection surface to ensure sufficient rigidity. The structural form of the lower box body 2 of the door sill is that the overall cross-section is in an L-shaped structure, and the bottom surface is relatively flat to ensure that the sliding door hinge can run smoothly on this bottom surface. The edge of the bottom surface extends upward. The overall structure of the lower box body 2 of the door sill is basically symmetrical with the upper box body 1 of the door sill in the horizontal plane. The box body connector 3 is used to connect the upper and lower box bodies, and connects the Z-direction extension edges of the upper and lower box bodies, which improves the connection strength of the sliding door sill assembly to a certain extent. The overall cross-section of the box body connector 3 is in an L-shaped structure, and several reinforcing ribs are arranged on the part. The box body connector 3 has a horizontally arranged installation surface, and the installation surface is conveniently provided with a folding surface extending upward. The folding surface is connected to the upper and lower connection surfaces extending in the Z direction of the upper and lower box bodies. The lower guide rail 4 of the sliding door is arranged below the installation surface of the box body connector 3.

[0041] In the present utility model, a lower guide rail 4 of the sliding door is arranged in the sliding door sill assembly. The guide wheels of the sliding door hinge are arranged in the lower guide rail 4 of the sliding door, so that the guide wheels of the sliding door hinge can run in the track without falling out. The overall cross-section of the lower guide rail 4 of the sliding door is a U-shaped cross-section, which extends along the sliding direction of the sliding door and is formed by a rolling process. A rectangular notch with a certain size is opened at the end for placing and installing the sliding door limiting device.

[0042] In the present utility model, the box body connector 3 and the lower guide rail 4 of the sliding door are connected by welding, and a lower reinforcing bracket 6 is welded at the end to form a secondary sub-assembly of the sliding door sill, as Figure 6 shown in the figure; the welding of the box body connector 3 and the lower reinforcing bracket 6 effectively improves the local rigidity of the installation point of the sliding door limiting device. The lower guide rail 4 of the sliding door is a rolled forming part with an equal cross-section to provide the movement track of the guide wheels of the sliding door hinge; the above-mentioned secondary sub-assembly of the sliding door sill is connected to the lower box body 2 of the door sill by welding. The upper surface of the bottom surface of the lower box body is in a flat shape to provide smooth operation of the load-bearing wheels of the sliding door hinge. This area needs to be inspected after welding to ensure that there are no granular iron filings such as welding slag, and they jointly form a sub-assembly of the sliding door sill, as Figure 7 shown in the figure; the sub-assembly of the sliding door sill is welded to the upper box body 1 of the door sill, the first upper reinforcing bracket 5 and the second upper reinforcing bracket 7 to jointly form a sliding door sill assembly, as Figure 1As shown. The first upper reinforcement bracket 5 and the second upper reinforcement bracket 7 are arranged at both ends, connecting the upper sill box body and the box body connecting piece to form a structural support. Both the front and rear sections of the upper sill box body 1 are provided with upper box body flanges 104, and both the front and rear ends of the lower sill box body 2 are provided with lower box body flanges 203. The front and rear flange structures are welded to the front and rear sealing plates 11 provided to form a closed box structure. The front upper box body flange 104 and the lower box body flange 203 are connected to the front sealing plate, and the rear upper box body flange 104 and the lower box body flange 203 are connected and welded to the rear sealing plate to form a closed box structure, so as to enhance the structural strength of the sill assembly.

[0043] The sliding door sill assembly of the present utility model is applied to an automobile. The sliding door sill assembly is connected to the vehicle body longitudinal beam 10 in the Y direction through a plurality of support plates 12 to improve the overall torsional stiffness of the vehicle body. The front end and the rear end are respectively welded with a front sealing plate and a rear sealing plate, so that the sliding door sill assembly has a complete closed structure in the X direction. This structure is combined with the longitudinal beam in the Y direction and the front and rear sealing plates in the X direction to form a module of the lower vehicle body assembly. A side wall assembly 9 is provided outside the sliding door sill assembly 100, and the sliding door sill assembly 100 and the side wall assembly 9 form a complete structure in the Y direction.

[0044] The sliding door sill assembly of the present utility model is designed into a box-shaped frame structure through structural optimization design, with L-shaped and U-shaped cross-sectional forms, interconnected vertically and horizontally, and the structural form is more stable. It is connected to the vehicle body, and an effective force transmission path is formed in the Y direction through a plurality of support plates 12.

[0045] The present utility model forms the sliding door sill assembly through welding as Figure 1 shown, and its position on the vehicle body is as Figure 8 , 9 shown. The sliding door sill assembly is located outside the vehicle body longitudinal beam 10 and is connected to the vehicle body longitudinal beam 10 through the support plates 12 and the front and rear sealing plates 11; it is located at the outer position below the cargo floor 8, mainly providing support for the cargo floor 8. The cargo floor 8 can extend outward to increase the cargo storage space of the cargo compartment, and at the same time provide installation for the sliding door system retainer and the limiting device; it is located inside the side wall system assembly 9, and the side wall, longitudinal beam, floor and the sliding door sill assembly form a complete structure. This installation structure has good stiffness performance and can ensure the load-bearing space of the cargo compartment at the same time.

[0046] By building the structure of the sliding door sill assembly, the structure of the sliding door sill in the front-back direction, up-down direction and left-right direction of the sliding door lower hinge is effectively guaranteed, the stiffness of the installation point is improved, and the smooth operation of the sliding door can be ensured. All parts inside the sliding door sill assembly are sliding lap joint structures. During the welding process, Y-direction adjustment and Z-direction adjustment of the parts can be realized, making the part matching process better, and effectively ensuring the welding accuracy and matching effect of the assembly.

[0047] A vehicle with such a sliding threshold assembly, which has a large cargo compartment carrying space and good structural stability.

[0048] The present utility model provides a sliding door threshold assembly and a vehicle, which solve the problems of weak stiffness performance of the sliding door threshold and occupation of the cargo compartment carrying space; the assembly has the advantages of light weight, low cost, excellent structural performance, large carrying space, etc., greatly improves the stiffness performance of the threshold, ensures the effective carrying space of the cargo compartment, and has strong practicability and good application prospects.

[0049] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0050] The above has made an exemplary description of the present utility model in conjunction with the drawings. However, the present utility model is not limited to the above manner. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present utility model or directly applied to other occasions, they all fall within the protection scope of the present utility model.

Claims

1. A sliding door threshold assembly, characterized in that: It includes an upper threshold box body and a lower threshold box body, the upper end surface of the upper threshold box body is connected under the cargo hold floor, a box body connector is provided at the connection between the upper threshold box body and the lower threshold box body, the lower guide rail of the sliding door is provided under the box body connector, and the sliding door threshold assembly is provided between the vehicle body longitudinal beam and the side panel assembly.

2. The sliding door threshold assembly according to claim 1, characterized in that: The door sill upper box body includes an upper box body body, the upper box body body has an L-shaped cross-section and is extended along the length direction of the vehicle body. The upper end of the box body body is a horizontally arranged top surface, and the inner edge of the top surface extends downward along the Z direction to form an upper connecting surface.

3. The sliding door threshold assembly according to claim 2, characterized in that: A plurality of reinforcing ribs arranged at intervals are provided in the length direction of the upper box body.

4. The sliding door threshold assembly according to claim 3, characterized in that: The door sill lower box body includes a lower box body body, the cross-section of the lower box body body is L-shaped, and it is extended along the length direction of the vehicle body. The lower end of the lower box body body is a horizontally arranged bottom surface, and the inner edge of the bottom surface extends upward along the Z direction to form a lower connecting surface, which is connected to the upper connecting surface of the door sill upper box body.

5. The sliding door threshold assembly according to claim 4, characterized in that: A plurality of lower box body reinforcing ribs are arranged at intervals in the length direction of the lower box body.

6. The sliding door threshold assembly according to claim 1, characterized in that: The entire cross section of the lower guide rail of the sliding door is a U-shaped cross section, and is extended along the sliding direction of the sliding door; the guide wheel of the sliding door hinge is arranged in the lower guide rail of the sliding door.

7. The sliding door threshold assembly according to claim 1, characterized in that: The box body connector includes a connector body, the cross section of the connector body is an L-shaped structure, and a plurality of connector reinforcing ribs arranged at intervals are provided in the length direction of the connector body.

8. The sliding door threshold assembly according to any one of claims 1 to 7, characterized in that: The box body connecting piece shown is connected to the lower guide rail of the sliding door by welding, and a lower reinforcing bracket is welded at the end of the box body connecting piece; the box body on the threshold is connected to the box body connecting piece by welding, and a first upper reinforcing bracket and a second upper reinforcing bracket are provided at both ends of the welded parts between the box body on the threshold and the box body connecting piece.

9. The sliding door threshold assembly according to claim 1, characterized in that: The front and rear ends of the upper threshold box body and the lower threshold box body are both provided with flange structures.

10. An automobile, provided with the sliding door threshold assembly according to any one of claims 1 to 9, characterized in that: The sliding door threshold assembly is located on the outside of the vehicle body longitudinal beam and is connected to the vehicle body longitudinal beam through a support plate and a sealing plate.

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