Design verification method, device and storage medium for double folding berth in vehicle

Abstract

The present invention relates to a design verification method, device and storage medium for a double folding berth for a vehicle, characterized in that it includes the following steps: determining the key parameters of the double folding berth according to the general layout of the double folding berth and the performance targets of each component; building a two-dimensional principle model of the double folding berth mechanism according to the key parameters, and adding the cross-sectional profiles of the surrounding components at the same time; using the motion angle θ1 of the four-bar hinge mechanism as a motion drive parameter to drive and simulate the two-dimensional principle model of the double folding berth mechanism, and adjusting the key parameters until the two-dimensional principle model of the mechanism meets the verification requirements; building a three-dimensional motion model of the double folding berth according to the key parameters that meet the verification requirements determined by the drive simulation, and optimizing and updating the three-dimensional motion model according to the motion simulation results. The present invention enables the designed double folding berth to not only meet the customer's demand for a double rest in the lower berth, but also meet the design requirements of a safe distance from surrounding parts.

Description

Technical Field

[0001] The invention relates to the technical field of truck sleeper berths, and in particular to a design verification method, equipment and storage medium for a double-person folding sleeper berth on a vehicle. Background Art

[0002] With the development of economy, the demand for diversified heavy-duty vehicles is increasing. At present, for trucks, long-distance driving comfort is undoubtedly the focus of customers, and the comfortable and durable sleeper berths are more and more valued by people.

[0003] Since trucks are often faced with long-distance transportation during use, the design of truck sleepers provides drivers with a resting space during long-distance travel.

[0004] In the related art, due to the limitation of the length of the cab, the width of the lower berth of current trucks is generally designed to be only wide enough for one person to sleep, and the width of the lower berth cannot meet the customer's demand for a double rest in the lower berth.

[0005] Therefore, it is necessary to design a new design verification method, equipment and storage medium for a double folding berth in a vehicle to overcome the above problems. Summary of the invention

[0006] The embodiment of the present invention provides a design verification method, device and storage medium for a double folding berth in a vehicle, so as to solve the problem in the related art that the width of the lower berth cannot meet the customer's demand for double rest in the lower berth.

[0007] In a first aspect, a design and verification method for a double folding berth in a vehicle is provided, wherein the double folding berth includes a berth, a flap is hinged on one side of the berth, and the bottom surface of the berth is connected to the floor of the cab by a four-bar hinge mechanism, and is characterized in that it includes the following steps: determining key parameters of the double folding berth according to the overall layout of the double folding berth and the performance objectives of each component; building a two-dimensional principle model of the double folding berth mechanism according to the key parameters, and adding cross-sectional contours of surrounding components; using the motion angle θ1 of the four-bar hinge mechanism as a motion drive parameter to drive and simulate the two-dimensional principle model of the double folding berth mechanism, and adjusting the key parameters until the two-dimensional principle model of the mechanism meets the verification requirements; building a three-dimensional motion model of the double folding berth according to the key parameters that meet the verification requirements determined by the drive simulation, and optimizing and updating the three-dimensional motion model according to the motion simulation results.

[0008] In some embodiments, the key parameters include the width X1 of the berth, the width X2 of the flap, and the height Z1 of the upper surface of the berth from the surface of the cab carpet.

[0009] In some embodiments, the flap is hinged to one side of the berth through a flip hinge, and the flip hinge is sleeved on the hinge rotation axis, the four-bar hinge mechanism is connected to the bottom surface of the berth through a driving strut, and the four-bar hinge mechanism includes two rocking arms and two fixed arms; the key parameters also include the thickness t1 of the berth, the thickness t2 of the flap, the distance Z3 between the berth and the flap, the position Px-1 of the hinge rotation axis, the lengths L1 and L3 of the two fixed arms, the lengths L2 and L4 of the two rocking arms, the positions of the rotation axes at the four vertices of the four-bar hinge mechanism, the movement angle θ1 of the four-bar hinge mechanism, the initial length Lq-1 of the driving strut, the elongated length Lq-2 of the driving strut, and the positions Pq-1 and Pq-2 of the two end points of the driving strut.

[0010] In some embodiments, a two-dimensional principle model of a double folding berth mechanism is built based on the key parameters, and the cross-sectional profiles of the surrounding components are added, including: arranging one end of the driving strut in the middle position of the bottom surface of the berth, and arranging the other end of the driving strut in the middle of one of the rockers.

[0011] In some embodiments, when the double folding berth is in the folded state, the angle B between the driving strut and the horizontal plane is in the range of 5° to 20°.

[0012] In some embodiments, the key parameters are adjusted until the two-dimensional principle model of the mechanism meets the verification requirements, including: adjusting the width X2 of the flap or increasing the length of the two rockers of the four-bar hinge mechanism, and reducing the length of the two fixed arms of the four-bar hinge mechanism; determining whether the two-dimensional principle model of the mechanism will interfere with surrounding components during the driving simulation process, and if so, continue to adjust the key parameters, otherwise the two-dimensional principle model of the mechanism meets the verification requirements.

[0013] In some embodiments, a three-dimensional motion model of a double folding berth is constructed according to the key parameters that meet the verification requirements determined by the drive simulation, and the three-dimensional motion model is optimized and updated according to the motion simulation results, including: designing the size and position parameters of all components of the double folding berth according to the key parameters that meet the verification requirements determined by the drive simulation; constructing the three-dimensional motion model of the double folding berth according to the size and position parameters of all components of the double folding berth; performing motion simulation on the three-dimensional motion model, compiling associated parameters, and generating a motion envelope; and optimizing and updating the three-dimensional motion model according to the motion envelope.

[0014] In some embodiments, the updating of the three-dimensional motion model according to the motion envelope optimization includes: updating the size and position parameters of all components of the double folding berth according to the motion envelope optimization to update the three-dimensional motion model, and then performing a simulation to check the updated data; if the updated three-dimensional motion model meets the verification requirements, the arrangement is completed, otherwise the three-dimensional motion model continues to be updated and adjusted.

[0015] In a second aspect, a computer device is provided, comprising: a processor and a memory; wherein the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the above-mentioned design verification method for the double folding berth in a vehicle.

[0016] In a third aspect, a storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the design verification method of the double folding berth in a vehicle is implemented.

[0017] The beneficial effects brought about by the technical solution provided by the present invention include:

[0018] The embodiments of the present invention provide a design and verification method, device and storage medium for a double folding berth in a vehicle. Since drive simulation is first performed through a two-dimensional principle model of the double folding berth mechanism, it is possible to preliminarily verify whether some key parameters of the double folding berth meet the verification requirements. After the requirements are met, a complete three-dimensional motion model is further designed, which can further verify all parameters of the double folding berth, so that the designed double folding berth can not only meet the customer's demand for two people to rest in the lower berth, but also meet the design requirements of a safe distance from surrounding parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A flow chart of a design verification method for a double-person folding berth in a vehicle provided by an embodiment of the present invention;

[0021] Figure 2 A flow chart of another design verification method for a double-person folding sleeper in a vehicle provided by an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the structure of a two-dimensional principle model of a mechanism provided by an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of the structure after the two-dimensional principle model of the mechanism provided by the embodiment of the present invention is expanded;

[0024] Figure 5 A schematic diagram of the three-dimensional structure of a double folding berth after unfolding provided by an embodiment of the present invention.

[0025] In the figure:

[0026] 1. Sleeper; 2. Flap; 3. Four-link hinge mechanism; 31. Rocker; 32. Fixed arm;

[0027] 4. Cab carpet; 5. Hinge rotation axis; 6. Driving support rod; 7. Support pipe beam; 8. Baffle; 9. Rear enclosure interior panel. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The embodiment of the present invention provides a design verification method, device and storage medium for a double folding berth in a vehicle, which can solve the problem in the related art that the width of the lower berth cannot meet the customer's demand for double rest in the lower berth.

[0030] See also Figure 1 and Figure 3 As shown, a design verification method for a double folding berth for a vehicle provided by an embodiment of the present invention, wherein the double folding berth comprises a berth 1, a flap 2 is hinged on one side of the berth 1, and the flap 2 can be folded under the berth 1. After being folded, the flap 2 can be flush with the berth 1 and is located on one side of the width direction of the berth 1 to form the other half of the entire double folding berth. One person can sleep on the berth 1 and one person can also sleep on the flap 2, thereby forming a double berth. The bottom surface of the berth 1 is connected to the cab floor through a four-bar hinge mechanism 3. The connection here can be a direct connection or an indirect connection. The design verification method for the double folding berth may include the following steps:

[0031] S1: Determine key parameters of the double folding berth according to the overall layout of the double folding berth and the performance targets of each component.

[0032] S2: Build a two-dimensional principle model of the double folding berth mechanism according to the key parameters, and add the cross-sectional profiles of the surrounding components. The two-dimensional principle model of the mechanism is also a two-dimensional cross-sectional diagram of the double folding berth. In this embodiment, the cross-sectional profiles of the surrounding components are also drawn, so that the two-dimensional principle model of the mechanism and the surrounding components can be checked in the subsequent simulation process to see whether there is interference.

[0033] S3: Use the motion angle θ1 of the four-link hinge mechanism 3 as the motion driving parameter to drive the two-dimensional principle model of the double folding sleeper mechanism for simulation, and adjust the key parameters until the two-dimensional principle model of the mechanism meets the verification requirements. This step can be combined with all factors and all parameters can be adjusted continuously, which is time-consuming.

[0034] S4: According to the key parameters that meet the verification requirements determined by the drive simulation, a three-dimensional motion model of the double folding berth is constructed, and the three-dimensional motion model is optimized and updated according to the motion simulation results.

[0035] In this embodiment, since the key parameters of the double folding berth are determined, the two-dimensional principle model of the double folding berth mechanism can be built according to the key parameters, and the driving simulation can be performed through the two-dimensional principle model of the double folding berth mechanism first, so as to preliminarily check whether some key parameters of the double folding berth meet the verification requirements. After the requirements are met, a complete three-dimensional motion model can be further designed, and all parameters of the double folding berth can be further verified, so that the designed double folding berth can not only meet the customer's demand for a double rest in the lower berth 1, but also meet the design requirements of the safety distance from the surrounding parts. And after the two-dimensional principle model of the mechanism meets the requirements, the three-dimensional motion model can be fine-tuned in a small amount, and the adjustment is carried out in two steps. Compared with directly establishing a three-dimensional model for adjustment, the workload can be greatly reduced, because the three-dimensional model has more variables and a more complex structure, and it will be more troublesome to adjust. If repeated adjustments are made, it will be very time-consuming.

[0036] See also Figure 3 As shown, in some embodiments, the key parameters may include the width X1 of the berth 1, the width X2 of the flap 2, and the height Z1 of the upper surface of the berth 1 from the surface of the cab carpet 4. Since the total width of the double folding berth after unfolding is the sum of the width X1 of the berth 1 and the width X2 of the flap 2, according to the general layout requirements and the target width of the berth 1 after unfolding, the values ​​of the width X1 of the berth 1, the width X2 of the flap 2, and the height Z1 of the upper surface of the berth 1 from the surface of the cab carpet 4 will be clarified, among which the width X2 of the flap 2 is a key verification parameter, which directly affects the maximum width to which the berth 1 can be widened.

[0037] Furthermore, the flap 2 can be hinged to one side of the berth 1 through a flip hinge, and the flip hinge is sleeved on the hinge rotating shaft 5, so that the flap 2 can be flipped, unfolded and folded relative to the berth 1; the four-bar hinge mechanism 3 can also be connected to the bottom surface of the berth 1 through a driving strut 6, wherein the driving strut 6 can be pneumatic or hydraulic, that is, it can be a pneumatic strut or a hydraulic strut, so that when the flap 2 is unfolded, the driving strut 6 can provide a driving force to save the flipping control force during the flipping process, and at the same time can weaken or avoid the vibration and abnormal sound of the berth caused by the driving condition of the uneven ground; the four-bar hinge mechanism 3 includes two rocking arms 31 and two fixed arms 32; the key parameters can also include the thickness t1 of the berth 1, the thickness t2 of the flap 2, the distance Z3 between the berth 1 and the flap 2 (wherein, the thickness can be adjusted according to the flip hinge The size of Z3 is designed according to the installation space requirement of the chain), the position Px-1 of the hinge rotation axis 5, the lengths L1 and L3 of the two fixed arms 32, the lengths L2 and L4 of the two rockers 31, the positions P1 / P2 / P3 / P4 of the rotation axes at the four vertices of the four-bar hinge mechanism 3 (wherein the four vertices P1 / P2 / P3 / P4 are also key verification parameters), the motion angle θ1 of the four-bar hinge mechanism 3 (the motion angle θ1 is the key verification parameter of the motion drive), the initial length Lq-1 of the driving strut 6, the elongated length Lq-2 of the driving strut 6 and the positions Pq-1 and Pq-2 of the two end points of the driving strut 6. As the length of the driving strut 6 changes with the flipping of the berth 1, the initial length Lq-1 is also the length of the driving strut 6 in the compressed state, and the elongated length Lq-2 is also the length of the driving strut 6 when it is extended to the longest. When the positions Pq-1 and Pq-2 of the two end points of the driving strut 6 are initially defined, Pq-1 and Pq-2 are defined as the positions of the two end points of the driving strut 6 when the berth is in a folded state, that is, the initial positions. When the berth is flipped, the positions of the two end points of the driving strut 6 will also change, which is a dynamic value.

[0038] In this embodiment, see Figure 3 and Figure 4As shown, in order to meet the function of folding the berth, the four-bar hinge mechanism 3 adopts the principle of the double rocker 31 mechanism, and the four points P1, P2, P3, and P4 form a parallelogram. L2 and L4 serve as the rocker 31. In order to ensure that after the berth 1 is flipped, the flap 2 can have enough space to flip and unfold smoothly and leave a certain safety gap with the supporting pipe beam 7 and the baffle 8, on the basis of meeting the principle of the double rocker 31 mechanism, the L2 / L4 length value needs to be as large as possible. At the same time, in order to ensure that the four-bar hinge mechanism 3 is compact, the distance between the rod formed by the points P1 and P4 and the rod formed by the points P2 and P3 is as small as possible; the position Px-1 point of the hinge rotation axis 5 ensures that the bottom surface of the flap 2 is parallel to the bottom surface of the berth 1 without step difference or gap after flipping and unfolding; while meeting the above, it is prioritized to ensure that the width X2 value of the flap 2 is large enough, and the total width of the berth 1 and the flap 2 after final unfolding is greater than or equal to the target value. The wider the total width, the better the comfort of the occupants when resting on it, thereby improving the driving comfort. Among them, the lower end of the baffle 8 is connected to the cab carpet 4 and the floor, and a rear interior panel 9 is provided behind the double folding berth.

[0039] Furthermore, the key parameters may also include the thickness Z2 of the berth 1 and the thickness Z4 of the flap 2 .

[0040] In some optional embodiments, the two-dimensional principle model of the double folding berth mechanism is constructed according to the key parameters, and the cross-sectional profile of the surrounding parts is added, which may include: arranging one end of the driving strut 6 at the middle position of the bottom surface of the berth 1, and arranging the other end of the driving strut 6 at the middle of one of the rockers 31. That is, the driving strut 6 is arranged in the middle of the berth 1 as much as possible.

[0041] In this embodiment, the other end of the driving strut 6 is arranged between point P1 and point P2, Lq-1 is the initial length of the driving strut 6, and is also the compressed length. When the berth 1 is flipped to the maximum angle, the value of Lq-2 is the maximum value after the hydraulic strut is opened. The difference between the maximum value and the initial length is the stroke S of the driving strut 6. The stroke S of the driving strut 6 ≤ 2 / 3Lq-1 can meet the structural requirements of the driving strut 6.

[0042] In some embodiments, when the double folding berth is in the folded state, the angle B between the driving strut 6 and the horizontal plane is in the range of 5° to 20°. With this arrangement, the berth 1 has a locking force on the entire system after being folded, ensuring that the berth 1 will not automatically pop open. The driving strut 6 can save the turning operation force during the unfolding of the berth 1, and the maximum stroke is the limit of the maximum turning angle of the berth 1; at the same time, because the driving strut 6 can provide a locking force, the driving strut 6 can also weaken or avoid the vibration and abnormal noise of the berth caused by the uneven driving condition.

[0043] Further, the adjustment of the key parameters until the two-dimensional principle model of the mechanism meets the verification requirements may include: adjusting the width X2 of the flap 2 or increasing the length of the two rockers 31 of the four-bar hinge mechanism 3, reducing the length of the two fixed arms 32 of the four-bar hinge mechanism 3, that is, adjusting L1, L3, L2 or L4; judging whether the two-dimensional principle model of the mechanism will interfere with the surrounding components during the driving simulation process, and if so, continue to adjust the key parameters, otherwise the two-dimensional principle model of the mechanism meets the verification requirements. Among them, in the adjustment process, the parameters of the four-bar hinge mechanism 3 can be adjusted first to see whether they can meet the verification requirements. In some optional embodiments, the positions P1 / P2 / P3 / P4 of the rotation axes at the four vertices of the four-bar hinge mechanism 3 can also be adjusted. Of course, in other embodiments, other parameters may also be adjusted, such as the width X1 of the berth 1, the height Z1 of the upper surface of the berth 1 from the surface of the cab carpet 4, the thickness t1 of the berth 1, the thickness t2 of the flap 2, the distance Z3 between the berth 1 and the flap 2, the position Px-1 of the hinge rotation axis 5, the movement angle θ1 of the four-bar hinge mechanism 3, the initial length Lq-1 of the driving strut 6, the elongated length Lq-2 of the driving strut 6, or the positions Pq-1 and Pq-2 of the two end points of the driving strut 6. Among them, the height Z1 of the upper surface of the berth 1 from the surface of the cab carpet 4 may basically not need to be adjusted.

[0044] See also Figure 2 As shown, in some optional embodiments, the three-dimensional motion model of the double folding berth is built according to the key parameters that meet the verification requirements determined by the driving simulation, and the three-dimensional motion model is optimized and updated according to the motion simulation results, which may include: according to the key parameters that meet the verification requirements determined by the driving simulation, the size and position parameters of all parts of the double folding berth are designed, wherein the key parameters determined in the early stage are the key parameters related to the cross-section of the double folding berth. When building the three-dimensional model, the double folding berth formed is three-dimensional, so it is necessary to add some other parameters such as length, and to design each part in detail, so as to form a three-dimensional diagram on the basis of two dimensions; according to the size and position parameters of all parts of the double folding berth, the three-dimensional motion model of the double folding berth is built; then the three-dimensional motion model is subjected to motion simulation, and the associated parameters are compiled to generate a motion envelope; according to the motion envelope, the three-dimensional motion model is optimized and updated. In this embodiment, it can be intuitively seen whether there are places in the three-dimensional model that do not meet the requirements according to the generated motion envelope, and the three-dimensional data parameters and the three-dimensional model are further optimized and simulated, and finally the three-dimensional model and three-dimensional parameters that meet the requirements are obtained.

[0045] Among them, when building the model, CATIA software can be used for construction. For example, the two-dimensional principle model of the double folding berth mechanism can be simulated and checked for the feasibility of the folding berth by using the animation constraint / animate constraint in the sketch / sketch of the CATIA software, and the preliminary boundary of the entire structure and the motion parameters of the mechanism can be constructed; after further completing the 3D detailed data design, a motion model is built in the CATIA software DMUkinematics, and then the DMU simulation is combined to check whether the safety distance between the double folding berth and the surrounding parts meets the design requirements. Of course, in other embodiments, other modeling and simulation software can also be used for modeling and simulation.

[0046] In some embodiments, the updating of the three-dimensional motion model according to the motion envelope optimization may include: updating the size and position parameters of all parts of the double folding berth according to the motion envelope optimization to update the three-dimensional motion model, and then performing a simulation to check the updated data; if the updated three-dimensional motion model meets the verification requirements, the arrangement is completed, otherwise the three-dimensional motion model is continued to be updated and adjusted. After the arrangement is completed, the motion curve chart of the mechanism is completed using the boundary parameters to form a report for archiving. Figure 5 The three-dimensional structure of the double folding sleeper after unfolding can be seen.

[0047] The present invention can more intuitively solve the static and dynamic interference problems between components through a verification method based on the DMU kinematics module of CATIA software. If interference or unreasonableness exists, an optimal solution is finally determined by adjusting the associated parameters and repeatedly simulating, generating a motion envelope, freezing all key dimensions and boundaries, and then redesigning related components, which can greatly save development costs.

[0048] An embodiment of the present invention also provides a computer device, comprising: a processor and a memory; wherein the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the above-mentioned design verification method for the double-person folding berth in a vehicle.

[0049] The embodiment of the present invention further provides a storage medium on which a computer program is stored. When the computer program is executed by a processor, the design verification method of the double-person folding berth in a vehicle is implemented.

[0050] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0051] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0052] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may 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 the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

[0053] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The above computer program product includes one or more computer instructions. When the above computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The above computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The above computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the above computer instructions can be transmitted from a website site, a computer, a server or a data center by wired (such as coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The above computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server, a data center, etc. that contains one or more available media integrated. The above available medium can be a magnetic medium, (such as a floppy disk, a storage disk, a tape), an optical medium (such as a DVD), or a semiconductor medium (such as an SSD), etc. In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0054] In the several embodiments provided in the present application, it should be understood that the disclosed device can also be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the indirect coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the device or unit can be electrical or other forms. The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the scheme of the embodiment of the present application.

[0055] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0056] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium may include, for example: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.

[0057] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A design verification method for a double folding sleeper in a vehicle, wherein: A double folding berth comprises a berth (1), one side of the berth (1) is hinged with a flap (2), the bottom surface of the berth (1) is connected to the floor of the cab via a four-link hinge mechanism (3), the flap (2) is hinged to one side of the berth (1) via a flip hinge, and the flip hinge is sleeved on a hinge rotating shaft (5), the four-link hinge mechanism (3) is connected to the bottom surface of the berth (1) via a driving strut (6), the four-link hinge mechanism (3) comprises two rocking arms (31) and two fixed arms (32), and is characterized in that it comprises the following steps: According to the overall layout of the double folding berth and the performance targets of each component, the key parameters of the double folding berth are determined, wherein the key parameters include the width X1 of the berth (1), the width X2 of the flap (2) and the height Z1 of the upper surface of the berth (1) from the surface of the cab carpet (4), and the key parameters also include the thickness t1 of the berth (1), the thickness t2 of the flap (2), the distance Z3 between the berth (1) and the flap (2), the position Px-1 of the hinge rotation axis (5), the lengths L1 and L3 of the two fixed arms (32), the lengths L2 and L4 of the two rockers (31), the positions of the rotation axes at the four vertices of the four-bar hinge mechanism (3), the movement angle θ1 of the four-bar hinge mechanism (3), the initial length Lq-1 of the drive strut (6), the elongated length Lq-2 of the drive strut (6) and the positions Pq-1 and Pq-2 of the two end points of the drive strut (6); A two-dimensional principle model of a double folding berth mechanism is constructed based on the key parameters, and the cross-sectional profiles of the surrounding components are added; Using the motion angle θ1 of the four-link hinge mechanism (3) as a motion driving parameter to perform a driving simulation on the two-dimensional principle model of the double folding berth mechanism, and adjusting the key parameters until the two-dimensional principle model of the mechanism meets the verification requirements; According to the key parameters that meet the verification requirements determined by the drive simulation, a three-dimensional motion model of the double folding berth is built, and the three-dimensional motion model is optimized and updated according to the motion simulation results.

2. The design verification method for a double folding berth in a vehicle as claimed in claim 1, characterized in that: The two-dimensional principle model of the double folding berth mechanism is built according to the key parameters, and the cross-sectional profiles of the surrounding components are added, including: One end of the driving strut (6) is arranged at the middle position of the bottom surface of the berth (1), and the other end of the driving strut (6) is arranged at the middle part of one of the rocking arms (31).

3. The design verification method for a double folding berth in a vehicle as claimed in claim 2, characterized in that: When the double folding berth is in a folded state, the angle B between the driving support rod (6) and the horizontal plane is in the range of 5° to 20°.

4. The design verification method for a double folding berth in a vehicle as claimed in claim 1, characterized in that: The step of adjusting the key parameters until the two-dimensional principle model of the mechanism meets the verification requirements includes: Adjust the width X2 of the flap (2) or increase the length of the two rockers (31) of the four-bar hinge mechanism (3), and reduce the length of the two fixed arms (32) of the four-bar hinge mechanism (3); It is determined whether the two-dimensional principle model of the mechanism will interfere with surrounding components during the driving simulation process. If so, the key parameters are continuously adjusted. Otherwise, the two-dimensional principle model of the mechanism meets the verification requirements.

5. The design verification method for a double folding berth in a vehicle as claimed in claim 1, characterized in that: The key parameters that meet the verification requirements determined by the driving simulation are used to build a three-dimensional motion model of the double folding berth, and the three-dimensional motion model is optimized and updated according to the motion simulation results, including: According to the key parameters that meet the verification requirements determined by the drive simulation, the size and position parameters of all parts of the double folding sleeper are designed; According to the size and position parameters of all parts of the double folding berth, a three-dimensional motion model of the double folding berth is constructed; Perform motion simulation on the 3D motion model and compile associated parameters to generate motion envelopes; The three-dimensional motion model is optimized and updated according to the motion envelope.

6. The design verification method for a double folding sleeper in a vehicle as claimed in claim 5, characterized in that: The step of optimizing and updating the three-dimensional motion model according to the motion envelope comprises: Optimizing and updating the size and position parameters of all parts of the double folding sleeper according to the motion envelope to update the three-dimensional motion model, and then performing a simulation again to check the updated data; If the updated 3D motion model meets the verification requirements, the layout is completed; otherwise, continue to update and adjust the 3D motion model.

7. A computer device, characterized in that: include: A processor and a memory; wherein the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the design verification method of the double folding berth for vehicles as described in any one of claims 1-6.

8. A storage medium having a computing program stored thereon, characterized in that: When the computer program is executed by a processor, the design and verification method of a double-person folding sleeper in a vehicle as described in any one of claims 1 to 6 is implemented.

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