Vehicle door assembly for heavy truck low-entrance cab

Abstract

A car door assembly for a heavy truck low-entrance cab belongs to the technical field of car doors and comprises a car door framework, a door window and an observation window are arranged on the car door framework, an outer decorative plate assembly and an inner decorative plate assembly are respectively mounted on two side surfaces of the car door framework, the outer decorative plate assembly comprises an upper decorative plate, and the upper decorative plate is fixedly mounted on the peripheral side of the door window. A plate-shaped lower decoration plate or a lower decoration plate with observation window glass is detachably installed on the outer side of the observation window, the interior decoration plate assembly comprises an interior decoration plate body and an embedded plate, the interior decoration plate body is fixedly installed on the automobile door framework, a window structure is formed in the position, close to the observation window, of the interior decoration plate body, and the embedded plate is detachably installed at the window structure. The lower trim panel of the outer trim panel assembly and the insert panel of the inner trim panel assembly are both of a detachable structure, the vehicle door assembly is high in universality, can have two configurations of a conventional vehicle door assembly and a vehicle door assembly with an observation window, can be shared by left and right rudder vehicle types, reduces the number of parts and the input cost of molds, and reduces the overall cost.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile doors, in particular to a door assembly for a low-entry cab of a heavy truck. Background Art

[0002] Traditional heavy-duty trucks are mostly used as long-distance tractors and short-distance engineering vehicles. However, as heavy-duty truck technology becomes more mature, the market requirements for heavy-duty truck models are becoming more specific. The classification of heavy-duty truck models is becoming more and more refined. The proportion of inter-city garbage trucks, airport special vehicles, and short-distance logistics vehicles in the market is increasing. These types of vehicles are mostly used on urban roads, and the number of pedestrians and non-motorized vehicles has increased dramatically, which requires the cab's visibility to be higher than that of traditional heavy-duty trucks.

[0003] At present, a door structure with an observation window has appeared (publication number CN218577468U), which includes a door outer panel, a door inner panel, a door hinge reinforcement plate assembly, a door hinge assembly, a door outer panel reinforcement plate, a door lock reinforcement plate assembly, a door guide groove assembly and a door inner panel reinforcement plate. Observation windows are provided on the door outer panel, the door inner panel and the door outer panel reinforcement plate. The observation windows effectively reduce the driver's blind spots and provide protection for the driver's driving safety.

[0004] The existing door structure with an observation window is made of several metal plate structures welded together. The overall structure of the door is fixed and has poor adaptability, making it unsuitable for different usage requirements. For different usage requirements (such as when an observation window is not required), the door needs to be remanufactured to meet the requirements, which greatly increases the production cost and limits the overall lightweighting of the door. Utility Model Content

[0005] In order to solve the technical problems in the above-mentioned background technology of the existing vehicle doors with observation windows, such as limited lightweight and poor adaptability, the utility model provides a vehicle door assembly for a low-entry cab of a heavy truck.

[0006] The technical solution of this utility model is as follows:

[0007] The utility model provides a door assembly for a heavy - duty truck with a low - entry cab, which includes a door skeleton. Windows and an observation window are provided on the door skeleton. A glass assembly is installed at the window. An exterior trim panel assembly and an interior trim panel assembly are respectively installed on the two side surfaces of the door skeleton. The exterior trim panel assembly includes an upper trim panel which is fixedly installed around the window. A plate - shaped lower trim panel or a lower trim panel with an observation window glass is detachably installed outside the observation window. The interior trim panel assembly includes an interior trim panel main body and an insert panel. The interior trim panel main body is fixedly installed on the door skeleton. A window structure is provided at a position of the interior trim panel main body close to the observation window. The insert panel is detachably installed at the window structure. The lower trim panel of the exterior trim panel assembly and the insert panel of the interior trim panel assembly are both detachable structures. The door assembly has strong versatility, can have both the configurations of a conventional door assembly and a door assembly with an observation window, can meet the common use of left - hand and right - hand drive vehicle models. Compared with the traditional door assembly, the number of parts and the cost of mold investment are less, and the overall cost is lower.

[0008] Preferably, the insert panel is a transparent plate - shaped structure or an opaque plate - shaped structure, which can cooperate with the lower trim panel to have both the configurations of a conventional door assembly and a door assembly with an observation window, and can meet the common use of left - hand and right - hand drive vehicle models.

[0009] Preferably, the window is located above the observation window, and the observation window is located at the lower part of the door skeleton, which is convenient for broadening the driver's field of vision and reducing the visual blind area. A window lifter is installed on the door skeleton, and the window lifter is connected to the glass assembly, so that the lifting of the glass can be controlled through the window lifter.

[0010] Preferably, the glass assembly includes a fixed glass and a movable glass. The fixed glass is fixedly installed on the upper part of the door skeleton. The movable glass is movably arranged in the window and is located below the fixed glass. The movable glass is connected to the window lifter, which can broaden the driver's field of vision.

[0011] Preferably, a sealing assembly is provided between the movable glass and the window. The sealing assembly includes an outer water cut and an inner water cut to ensure the sealing performance between the window and the movable glass.

[0012] Preferably, the lower trim panel, the interior trim panel main body and the insert panel are all plastic plates, forming a multi - material composite door structure. Compared with the traditional door formed by stamping and welding processes, the lightweight effect is obvious, which is beneficial to the overall weight reduction of the door assembly, has a better energy - saving effect, and is easy to assemble on the assembly line, which can greatly improve the assembly efficiency.

[0013] Preferably, the door skeleton includes a rectangular inner plate frame which is composed of four aluminum alloy profiles. At least two hinges are installed on one side of the inner plate frame for easy connection with the vehicle body side wall. A sealing strip is installed around the inner plate frame to ensure the sealing ability of the door assembly. A reinforcing beam, a lock body mounting plate and a bumper beam are fixedly installed on the inner plate frame, which can improve the torsional stiffness and collision performance of the whole door.

[0014] Preferably, a reinforcing plate is fixed at the position where the hinge is installed on the inner panel frame, which plays a role in local strengthening.

[0015] Preferably, a plurality of reinforcing beams are provided, and the plurality of reinforcing beams form an I-shaped beam structure, which can improve its own bending stiffness and also improve the overall stiffness of the door skeleton.

[0016] Preferably, the upper and lower ends of the inner panel frame are provided with pre-bending parts to meet the installation requirements of different body side panel assemblies.

[0017] It can be seen from the above technical solutions that the advantages of the present utility model are as follows:

[0018] 1. The lower trim panel of the exterior trim panel assembly and the insert panel of the interior trim panel assembly are both detachable structures, and the lower trim panel is divided into two types: with an observation window glass and without an observation window glass, which can be selected and installed according to actual needs. The door assembly has strong versatility, can have both the configurations of a conventional door assembly and a door assembly with an observation window, can meet the common use of left- and right-hand drive vehicle models. Compared with the traditional door assembly, the number of parts and the cost of mold investment are less, and the overall cost is lower.

[0019] 2. The insert panel is a transparent plate-like structure or an opaque plate-like structure, which can be used in cooperation with the lower trim panel to have both the configurations of a conventional door assembly and a door assembly with an observation window, can meet the common use of left- and right-hand drive vehicle models, reduce the number of parts and the investment cost of molds, and reduce the overall cost.

[0020] 3. The lower trim panel, the main body of the interior trim panel and the insert panel are all plastic plates, and the door skeleton is a metal structure, forming a multi-material composite door structure. Compared with the traditional door formed by stamping and welding processes, the lightweight effect is obvious, which is beneficial to the overall weight reduction of the door assembly, has a better energy consumption reduction effect, and is easy to assemble on the production line, which can greatly improve the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 Front view structural diagram (without observation window) of the door assembly according to one or more embodiments of the present utility model;

[0023] Figure 2 Rear view structural diagram of the door assembly according to one or more embodiments of the present utility model;

[0024] Figure 3 Exploded structural schematic diagram of a vehicle door assembly according to one or more embodiments of the present utility model (including observation window);

[0025] Figure 4 Exploded structural schematic diagram of a vehicle door assembly according to one or more embodiments of the present utility model (excluding observation window);

[0026] Figure 5 Partial enlarged structural schematic diagram of a vehicle door assembly according to one or more embodiments of the present utility model;

[0027] Figure 6 Cooperated schematic diagram of an inner panel frame, an exterior trim panel assembly and an inner water cut of a vehicle door assembly according to one or more embodiments of the present utility model;

[0028] Figure 7 Exploded structural schematic diagram of an interior trim panel assembly according to one or more embodiments of the present utility model;

[0029] Figure 8 Partial sectional structural schematic diagram of a vehicle door assembly according to one or more embodiments of the present utility model;

[0030] The components represented by each reference numeral in the figure are as follows:

[0031] 1. Door skeleton; 2. First upper trim panel; 3. Second upper trim panel; 4. First lower trim panel; 5. Second lower trim panel; 6. Inner panel frame; 7. Reinforcing beam; 8. Lock body mounting plate; 9. Anti-collision beam; 10. Hinge; 11. Fixed leaf; 12. Movable leaf; 13. Fixed glass; 14. Moving glass; 15. Observation window glass; 16. Window regulator; 17. Sealing strip; 18. Outer water cut; 19. Inner water cut; 20. Interior trim panel main body; 21. First panel; 22. Second panel; 23. Observation window. Specific embodiments

[0032] In order to make the objectives, features and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the specific embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this patent.

[0033] In a typical embodiment of the present utility model, as Figures 1-8As shown, a door assembly for a heavy truck low-entry cab is proposed, comprising: a door frame 1, a glass assembly, an exterior panel assembly, an interior panel assembly and a glass lifter 16. The exterior panel assembly is mounted on the outer surface of the door frame 1, the interior panel assembly is mounted on the inner surface of the door frame 1, the glass assembly is mounted on the door frame 1, and the glass lifter 16 is used to control the raising and lowering of the moving glass 14 in the glass assembly.

[0034] The door frame 1 is provided with a door window and an observation window 23 . The door window is located above the observation window 23 . A glass assembly is installed at the door window. The observation window 23 is located at the lower part of the door frame 1 , so that the driver can observe the area near the wheel and reduce the blind spot.

[0035] The door frame 1 is made of aluminum alloy profiles and aluminum alloy stamping parts. Specifically, the door frame 1 includes an inner panel frame 6, a reinforcement beam 7, a lock body mounting plate 8 and an anti-collision beam 9. The inner panel frame 6 is made of four aluminum alloy profiles, making full use of the good corrosion resistance of aluminum materials, and can achieve a paint-free effect, reduce production processes, and reduce production costs. The inner panel frame 6 is rectangular as a whole. The upper and lower ends of the inner panel frame 6 are pre-bent during the forming process to form a pre-bent portion to meet the installation requirements of different body side assemblies. At least two hinges 10 are installed on one side of the inner panel frame 6 to be rotatably connected to the body through the hinges 10. A reinforcement plate is fixed at the position where the hinge 10 is installed on the inner panel frame 6 to play a role of local reinforcement, such as Figure 5 As shown, the inner panel frame 6 is fixedly connected to the door hinge 10 by bolts. The door hinge 10 includes a fixed page 11 and a movable page 12. The fixed page 11 is fixedly connected to the inner panel frame 6. The fixed page 11 is rotatably connected to the movable page 12. The movable page 12 is used to be fixedly connected to the vehicle body. A sealing strip 17 is installed on the peripheral side of the inner panel frame 6. The sealing strip 17 is clamped on the profile stop of the inner panel frame 6. When the door is closed, there is an interference of 5mm-8mm and a sealing surface of about 10mm wide between the inner panel frame 6 and the sealing surface of the vehicle body side, so as to achieve the requirement of complete sealing between the door assembly and the vehicle body side.

[0036] The reinforcing beam 7 is an aluminum alloy stamping part. The reinforcing beam 7 is pre-embedded with a glue groove and a sleeve nut to fix the lower trim panel and the glass lifter 16 of the exterior trim assembly. There are several reinforcing beams 7, which are fixed to the lower part of the inner panel frame 6, and several reinforcing beams 7 cooperate with each other to form an I-beam structure to improve their own bending stiffness and the overall stiffness of the door frame 1. The lock body mounting plate 8 and the anti-collision beam 9 are made of aluminum alloy stamping parts and aluminum profile materials respectively, and are fixed to the inner panel frame 6 by welding, which can improve the torsional stiffness and collision performance of the entire door.

[0037] The glass assembly includes a fixed glass 13 and a movable glass 14. The fixed glass 13 is adhesively fixed to the upper part of the door frame 1 with glass glue, and the gluing area is shielded by a black border printed with glass fiber to enhance the aesthetics. The movable glass 14 is movably arranged within the window opening of the door and is located below the fixed glass 13. The movable glass 14 is fixedly connected to the window lifter 16 by screws to drive the lifting of the movable glass 14. A sealing assembly is provided between the movable glass 14 and the window opening to ensure the sealing between the movable glass 14 and the window opening.

[0038] As Figure 8 shown, the sealing assembly includes an outer water deflector 18 and an inner water deflector 19. Both the outer water deflector 18 and the inner water deflector 19 are installed in the U-shaped groove of the inner panel frame 6 profile. The outer water deflector 18 and the inner water deflector 19 together with the movable glass 14 form a sealing structure at the window position, and play a role in assisting the lifting of the movable glass 14 and correcting the movement trajectory of the glass.

[0039] The window lifter 16 adopts a double-rail rope pulley type window lifter. The distance between the two rails is greater than the lateral dimension of the observation window opening. The two rails and the motor are respectively fixed to the reinforcing beam 7 by bolts, without the need for an additional fixed mounting plate. While meeting the lifting function, it saves materials and space, and helps to achieve the lightweight of the door assembly.

[0040] As Figure 3 shown, the exterior trim panel assembly includes a first upper trim panel 2, a second upper trim panel 3 and a lower trim panel. Among them, the first upper trim panel 2 and the second upper trim panel 3 are relatively fixedly installed on both sides of the upper part of the outer surface of the door frame 1, specifically on the peripheral side of the window opening. There is a gluing groove between the first upper trim panel 2 and the second upper trim panel 3 and the door frame 1. The first upper trim panel 2, the second upper trim panel 3 and the door frame 1 are fixedly connected by fixing glue, and the thickness of the glue layer is 5 mm; the lower trim panel is detachably installed on the lower part of the outer surface of the door frame 1, specifically on the outside of the observation window 23. The lower trim panel and the door frame 1 are fixed by bolts, making the lower trim panel detachable. In order to further increase the connection strength and sealing performance between the two, fixing glue can also be added between the lower trim panel and the door frame 1.

[0041] The lower trim panel is a plate-like structure and is made of glass fiber reinforced plastic to reduce the weight of the lower trim panel. The lower trim panel is divided into a first lower trim panel 4 and a second lower trim panel 5. Among them, the first lower trim panel 4 is reserved with a hole aligned with the observation window 23, and an observation window glass 15 is fixedly installed in the hole. The second lower trim panel 5 does not contain a hole. Thus, different types of lower trim panels can be selected according to actual needs to meet the selection requirements of the observation window 23 configuration for left-hand drive and right-hand drive vehicle models (the requirement of setting or not setting an observation window), which helps to reduce the part mold cost increased due to the increase in configuration and increases the versatility of the door assembly.

[0042] As shown Figure 7 in the figure, the interior trim panel assembly includes an interior trim panel main body 20 and an inlay panel. The interior trim panel main body 20 is made of modified polypropylene material with a surface of corroded coarse skin texture. At the upper part of the interior trim panel main body 20, there are installation structures for an elbow rest, a cup holder, a switch panel and an inner door handle. At the lower part of the interior trim panel main body 20, there is a storage space for storing items. In the middle of the interior trim panel main body 20, there is a window structure for installing the inlay panel. Around the window structure, there are glue application grooves and snap fastener fixing points. The inlay panel is detachably installed at the window structure in the middle of the interior trim panel main body 20 by means of snap connection.

[0043] The inlay panel includes a first inlay panel 21 and a second inlay panel 22. Among them, the first inlay panel 21 is made of transparent acrylic board material. The first inlay panel 21 is fixed into the window structure in the middle of the interior trim panel main body 20 by two methods of glue application or snap fastening, simultaneously meeting the requirements of sealing and observation functions. The second inlay panel 22 is made of thermoplastic polymer material with sponge foaming and covered with polyvinyl chloride skin material on the outside. The second inlay panel 22 is an opaque plate-shaped structure with a stitched pattern on the surface. The second inlay panel 22 is fixed into the window structure in the middle of the interior trim panel main body 20 by means of snap fastening. Both the first inlay panel 21 and the second inlay panel 22 are detachably connected to the interior trim panel main body 20, and can be selected and installed according to requirements, meeting different vehicle production requirements, reducing the investment in molds, and increasing the functionality of the door assembly.

[0044] The lower trim panel of the exterior trim panel assembly and the inlay panel of the interior trim panel assembly in this embodiment are both selectable and replaceable structures. The door assembly has strong versatility, can have both the configurations of a conventional door assembly and a door assembly with an observation window, can meet the common use of left and right steering models, has fewer parts and lower mold investment costs compared with the traditional door assembly, and has a lower overall cost.

[0045] In this embodiment, the door assembly uses the form of a skeleton frame plus an outer skin to form a multi-material composite door body structure. The diversity of the outer skin material selection is beneficial to improving the diversity of the door assembly. Compared with the traditional door formed by stamping and welding process, the lightweight effect is obvious, which is beneficial to the overall weight reduction of the door assembly, has a better energy consumption reduction effect, and is easy to assemble on the assembly line, which can greatly improve the assembly efficiency.

[0046] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A door assembly for a heavy truck low-entry cab, comprising: Door frame (1), characterized in that a window opening and an observation window (23) are provided on the door frame (1), a glass assembly is installed at the window opening, an exterior trim panel assembly and an interior trim panel assembly are respectively installed on both side surfaces of the door frame (1), the exterior trim panel assembly includes an upper trim panel, the upper trim panel is fixedly installed around the window opening, a plate-shaped lower trim panel or a lower trim panel with an observation window glass (15) is detachably installed outside the observation window (23), the interior trim panel assembly includes an interior trim panel main body (20) and an inlay panel, the interior trim panel main body (20) is fixedly installed on the door frame (1), a window structure is provided at a position of the interior trim panel main body (20) close to the observation window (23), and the inlay panel is detachably installed at the window structure.

2. The door assembly for a heavy truck low-entry cab according to claim 1, characterized in that, The inlay panel is a transparent plate-shaped structure or an opaque plate-shaped structure.

3. The truck door assembly for a low-entry cab according to claim 1, characterized in that, The window opening is located above the observation window (23), the observation window (23) is located at the lower part of the door frame (1), a window regulator (16) is installed on the door frame (1), and the window regulator (16) is connected to the glass assembly.

4. The door assembly for a heavy-duty truck low-entry cab according to claim 3, characterized in that, The glass assembly includes a fixed glass (13) and a movable glass (14), the fixed glass (13) is fixedly installed on the upper part of the door frame (1), the movable glass (14) is movably arranged in the window opening and is located below the fixed glass (13), and the movable glass (14) is connected to the window regulator (16).

5. The door assembly for a heavy truck low-entry cab according to claim 4, wherein, A sealing assembly is provided between the movable glass (14) and the window opening, and the sealing assembly includes an outer water deflector (18) and an inner water deflector (19).

6. The door assembly for a heavy truck low-entry cab according to claim 1, wherein The lower trim panel, the interior trim panel main body (20) and the inlay panel are all plastic panels.

7. The cab door assembly for heavy trucks with a low entrance according to claim 1, characterized in that, The door frame (1) includes a rectangular inner panel frame (6), the inner panel frame (6) is composed of four aluminum alloy profiles, at least two hinges (10) are installed on one side of the inner panel frame (6), a sealing strip (17) is installed around the inner panel frame (6), and a reinforcing beam (7), a lock body mounting plate (8) and a bumper beam (9) are fixedly installed on the inner panel frame (6).

8. The door assembly for a heavy truck low-entry cab according to claim 7, characterized in that, A reinforcing plate is fixed at the position where the inner panel frame (6) installs the hinge (10).

9. The door assembly for a heavy truck low-entry cab according to claim 7, wherein There are several reinforcing beams (7), and the several reinforcing beams (7) form an I-shaped beam structure.

10. The door assembly for a heavy truck low-entry cab according to claim 7, characterized in that, The upper and lower ends of the inner panel frame (6) are provided with pre-bent parts.

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