Injection molding plastic instrument board cross beam of new energy electric vehicle

Abstract

The utility model relates to a new energy electric automobile injection molding plastic instrument board cross beam which comprises a cross beam main body, the cross beam main body is formed by plastic injection molding, a steel framework is embedded in the cross beam main body, and the steel framework is formed by bending a steel bar. The left end and the right end of the cross beam body are symmetrically provided with cross beam supporting lugs fixedly connected with a vehicle body, and the cross beam supporting lugs are in triangular cantilever shapes. An air conditioner HAVC fixing hole and an air conditioner HAVC fixing pit are formed in the front end face and the top face of the middle of the cross beam body correspondingly and used for installing an air conditioner HAVC. A PAB fixing block used for installing an automobile PAB module is arranged on the right side of the front end of the beam body. A steering column mounting surface for mounting a steering column is arranged on the left side of the front end of the cross beam main body; compared with the prior art, on the premise that the rigidity and safety requirements are met, the overall dimension of the frame is met, meanwhile, the requirements of fixing parts are met to the maximum extent, the weight is greatly reduced, and the aim of light weight is achieved.

Description

[TECHNICAL FIELD]

[0001] The utility model relates to the technical field of automobile parts, and concretely relates to a new energy electric automobile injection plastic instrument panel cross beam. [BACKGROUND]

[0002] The instrument panel cross beam assembly is an important interior structure part of the automobile, is used for supporting the whole instrument panel, the steering column, the air conditioner three chamber parts and the like, and is fixed to the vehicle body through the cross beam, so that the instrument panel cross beam has enough rigidity to bear the load capacity of the parts installed thereon and can resist certain vibration impact.

[0003] At present, most of the instrument panel cross beams of passenger cars are welded by steel pipes and sheet metal stamping parts, and are heavy. With the continuous improvement of the light weight requirement of the automobile, the light weight design of the sub parts of the vehicle body system is also paid attention to accordingly; the light weight design of the instrument panel cross beam is gradually paid attention to because the weight proportion of the instrument panel cross beam in the instrument panel system is large.

[0004] Therefore, the light weight has become an important measurement index of the cross beam, and it is very important to provide a plastic instrument panel cross beam assembly applied to the new energy electric automobile to adapt to the above-mentioned target. [UTILITY MODEL CONTENTS]

[0005] The utility model discloses a new energy electric automobile injection plastic instrument panel cross beam, which can meet the requirements of rigidity and safety, meet the frame contour size, maximize the demand for fixed parts, greatly reduce the weight and achieve the target of light weight.

[0006] To realize above-mentioned purpose designs a kind of new energy electric automobile injection plastic instrument panel cross beam, including cross beam main body, the cross beam main body is made of plastic injection, the cross beam main body is embedded with steel skeleton, the steel skeleton is made of steel bar bending;The left and right ends of the cross beam main body are symmetrically provided with cross beam lug 1, the cross beam lug 1 adopts triangular cantilever shape, and the cross beam lug 1 is used to be fixedly connected with automobile body;The front end face of the middle part of the cross beam main body is provided with left and right distribution air conditioning HAVC fixed hole 301, the top surface of the middle part of the cross beam main body is provided with left and right distribution air conditioning HAVC fixed pit 302, the air conditioning HAVC fixed hole 301 and air conditioning HAVC fixed pit 302 are used to install air conditioning HAVC 13;The front end right side of the cross beam main body is provided with left and right symmetrical PAB fixed block 2, the PAB fixed block 2 is in convex shape, and is used to install automobile PAB module 14;The front end left side of the cross beam main body is provided with left and right symmetrical steering column mounting surface 4, and the steering column mounting surface 4 is used to be connected and install steering column 15.

[0007] Further, the upper and lower ends of the beam lug 1 are symmetrically provided with positioning pins 9, and the beam lug 1 is positioned with the automobile body through the positioning pins 9, and is mounted and fastened with the automobile body through bolts.

[0008] Further, the beam lug 1, the PAB fixing block 2, the air conditioner HAVC fixing hole 301, the air conditioner HAVC fixing pit 302 and the steering column mounting surface 4 are all embedded with metal pressure rings, so that damage of the installation moment of the plastic instrument panel beam to the thickness of the lug material can be avoided.

[0009] Further, the steel skeleton includes a steel skeleton one 5 and a steel skeleton two 6, the steel skeleton one 5 and the steel skeleton two 6 are embedded in the left and right parts of the beam body respectively, the steel skeleton one 5 is located at the steering column mounting surface 4, and the steel skeleton two 6 is located at the PAB fixing block 2, so that the installation stability of the steering column 15 and the automobile PAB module 14 is further ensured.

[0010] Further, the steel skeleton one 5 is in an "E" shape structure, and the tail parts of the steel bars on the upper and lower sides thereof are respectively vertically upwardly and vertically downwardly bent to form bending parts 7, the steel skeleton two 6 is in an "F" shape structure, and at least two inclined rib strips 8 are arranged on the other side of the bottom of the steel bar extending in the longitudinal direction, the inclined rib strips 8 extend obliquely downward and are arranged in parallel with each other, and the steel skeleton one 5 and the steel skeleton two 6 in the structure design can further meet the rigidity requirement and achieve the light weight effect.

[0011] Further, the steel skeleton further includes a steel skeleton three 10 and a steel skeleton four 11, the steel skeleton three 10 is embedded in the middle part of the beam body, and the steel skeleton four 11 is embedded at the beam lug 1 at the two ends of the beam body, so that high strength can be locally provided, and the plastic creep can be reduced.

[0012] Further, the front part, the bottom part and the rear part of the beam body are all provided with strip-shaped ribs or triangular ribs 12, the strip-shaped ribs or triangular ribs 12 are used for strengthening the rigidity of the surface of the beam body, and the overall strength and rigidity performance of the plastic CCB frame are ensured.

[0013] Further, the beam body is made of nylon polymer high molecular material and is injection molded, so that the light weight effect of the part can be better realized.

[0014] Compared with the prior art, the plastic instrument panel beam has the following advantages:

[0015] (1) The plastic instrument panel beam has better light weight effect, and the light weight of the part has good energy-saving effect on the new energy electric vehicle.

[0016] (2) The plastic instrument panel cross beam has better dimensional accuracy, the integrally-injected plastic instrument panel cross beam does not need to be repeatedly welded, the hole position accuracy is accurate, and therefore better accuracy control can be achieved when other components are installed;

[0017] (3) The plastic instrument panel cross beam meets the requirement of fixing components, and other parts do not need to be added;

[0018] (4) The plastic instrument panel cross beam has strong shape plasticity, and can be designed as an arbitrary shape, so that the platformization and generalization of components can be achieved;

[0019] In conclusion, the integrally-injected plastic instrument panel cross beam assembly structure (referred to as a plastic CCB) is provided, and components such as an instrument panel, a steering column, an air conditioner main machine HAVC, an air bag, a large screen and the like are assembled on the instrument panel cross beam, lamp support and fastening cooperation structures are provided, the instrument panel cross beam can be maximally assembled with various cooperation components under the conditions of meeting the requirements of rigidity, mode, safety and the like, and meeting the frame contour size, and a light weight target is achieved. [DETAILED DESCRIPTION]

[0020] Figure 1 is a three-dimensional structure schematic view of the utility model;

[0021] Figure 2 is a front structure schematic view of the utility model;

[0022] Figure 3 is a top view structure schematic view of the utility model;

[0023] Figure 4 is a side structure schematic view of the utility model;

[0024] Figure 5 is a three-dimensional structure schematic view of the utility model and an installation assembly after assembly;

[0025] Figure 6 is an explosion view of the utility model and an installation assembly;

[0026] Figure 7 is a structure schematic view of a steel framework one of the utility model;

[0027] Figure 8 is a structure schematic view of a steel framework two of the utility model;

[0028] In the figure: 1, beam lug 2, PAB fixed block 301, air conditioning HAVC fixed hole 302, air conditioning HAVC fixed pit 4, steering column mounting surface 5, steel skeleton 6, steel skeleton 7, bending part 8, inclined bar 9, positioning pin 10, steel skeleton 11, steel skeleton 12, strip or triangular rib 13, air conditioning HAVC 14, automobile PAB module 15, steering column. [DETAILED DESCRIPTION]

[0029] As shown in the accompanying drawings Figure 1 to the accompanying drawings Figure 6 The utility model provides a new energy electric automobile injection plastic instrument panel beam, including the beam main part, the beam main part adopts the injection of plastics and is formed, the steel skeleton is inlayed in the beam main part, the steel skeleton adopts the steel strip bending and is formed, the left and right two ends of beam main part symmetry is provided with beam lug 1, beam lug 1 adopts triangular cantilever shape, and beam lug 1 is used for fixed connection with automobile body, the front end face of beam main part middle part is provided with left and right distribution air conditioning HAVC fixed hole 301, and the top surface of beam main part middle part is provided with left and right distribution air conditioning HAVC fixed pit 302, and air conditioning HAVC fixed hole 301 and air conditioning HAVC fixed pit 302 are used for installing air conditioning HAVC 13, the front end right side of beam main part is provided with left and right symmetry PAB fixed block 2, and PAB fixed block 2 is protruding and is used for installing automobile PAB module 14, and the front end left side of beam main part is provided with left and right symmetry steering column mounting surface 4, and steering column mounting surface 4 is used for connecting and installing steering column 15.

[0030] Among them, the beam main part adopts the injection of nylon polymer macromolecular material and is formed, so that the better lightweight effect of part can be realized. The upper and lower ends of beam lug 1 are symmetrically provided with positioning pin 9, and are positioned with automobile body through positioning pin 9, and beam lug 1 is installed and fastened with automobile body through bolt, and metal pressure ring is embedded on beam lug 1, PAB fixed block 2, air conditioning HAVC fixed hole 301, air conditioning HAVC fixed pit 302 and steering column mounting surface 4, so that the damage of installation torque of plastic instrument panel beam to lug thickness can be avoided.

[0031] The steel skeleton includes steel skeleton one 5 and steel skeleton two 6, and the steel skeleton one 5 and the steel skeleton two 6 are embedded in the left and right parts in the beam main part, the steel skeleton one 5 is located at the steering column mounting surface 4, and the steel skeleton two 6 is located at the PAB fixed block 2, so that the installation stability of the steering column 15 and the automobile PAB module 14 is further ensured, and as a further preferred, the steel skeleton one 5 is in "E" type structure, as shown in the accompanying drawings Figure 7As shown, and the steel bar tail on both sides is vertically upward, vertically downward bending forming bending part 7; steel skeleton two 6 is "F" type structure, as shown in the attached Figure 8 As shown, located in its longitudinal extension of the other side of the bottom of the steel bar is provided with at least two inclined rib 8, inclined rib 8 inclined downward and parallel to each other, the structure design of steel skeleton one 5 and steel skeleton two 6 can further meet the stiffness requirements under the premise of lightweight effect.

[0032] Steel skeleton also includes steel skeleton three 10 and steel skeleton four 11, steel skeleton three 10 embedded in the middle of the beam body, steel skeleton four 11 embedded in the beam lug 1 at both ends of the beam body, thereby can provide high strength locally, but also can reduce the plastic creep. The front, bottom, rear of the beam body are provided with strip rib or triangular rib 12, which is used for strengthening the stiffness of the beam body surface, ensuring the overall strength and stiffness performance of the plastic CCB frame.

[0033] The utility model makes further description as follows in combination with specific embodiment:

[0034] The utility model provides a novel injection molding plastic instrument panel beam assembly structure (namely "plastic CCB"), and integrates and assembles instrument panel, steering column, air conditioning main HAVC, air bag, large screen and other components on the instrument panel beam, simultaneously provides lamp support and fastening cooperation structure, so that the instrument panel beam can integrate and assemble various cooperation parts in the condition of meeting stiffness, mode, safety and other requirements, and reaches the lightweight target.

[0035] The main body structure of the plastic CCB is injection molded by nylon polymer macromolecular material (PA6+GF60), the main body is plastic skeleton, the material thickness is 2.5mm, the local embedding is steel skeleton made of 1mm steel bar, and the standard parts are simultaneously embedded on the plastic skeleton, the instrument panel beam is assembled with air conditioning HAVC system, steering column, PAB and other parts to form an assembly component; the instrument panel beam is positioned with the vehicle body through two positioning pins, and is installed and fastened with the vehicle body through four bolts on both sides.

[0036] As shown in the attached Figure 5 As shown in the attached Figure 6As shown, it is the explosion view of the plastic CCB and the assembled parts after assembly, the instrument panel beam provides installation and support for PAB, HVAC and steering column to meet the dynamic stiffness of each component, meanwhile, the instrument panel beam is connected with the IP assembly to provide installation and support for the instrument panel system. The size of the plastic CCB is length x width x height = 200.8 mm x 946.6 mm x 592.1 mm, for the instrument panel beam with very large profile size, if the metal material frame is used, the weight will be very high, therefore, the plastic CCB is adopted by insert injection molding process, which can greatly reduce the weight while meeting the frame profile size.

[0037] As shown in the accompanying drawings Figure 1 to the accompanying Figure 4 As shown, the beam support ear 1, the PAB fixing block 2, the air conditioner HVAC fixing hole 301, the air conditioner HVAC fixing pit 302 and the steering column mounting surface 4 are the main installation structure features of the left side of the instrument panel beam. Among them, the beam support ear is the plastic instrument panel beam support ear, the metal pressure ring is embedded on the upper surface, the plastic instrument panel beam is positioned by two positioning pins and installed and fastened with the vehicle body by four bolts on both sides, the support ear adopts a triangular cantilever shape, which can achieve the effect of an equal strength beam, saves materials and also ensures the support strength. The PAB fixing block 2 is fastened with a metal pressure ring on the upper surface to fix the PAB. The air conditioner HVAC fixing hole 301 and the air conditioner HVAC fixing pit 302 are the air conditioner HVAC fixing points of the plastic instrument panel beam, and the metal pressure ring is also embedded inside, so as to avoid the damage of the installation torque of the plastic instrument panel beam to the thickness of the support ear. The steering column mounting surface 4 is also embedded with a metal pressure ring inside, and through four mounting holes, the plastic instrument panel beam is installed and fastened with the whole vehicle.

[0038] The local embedded steel structure of the plastic instrument panel beam can locally provide high strength and reduce plastic creep; the strip-shaped ribs or triangular ribs arranged on the front, bottom and rear of the plastic CCB strengthen the surface stiffness and ensure the lightweight characteristics of the front, bottom and rear of the plastic CCB. Meanwhile, the plastic CCB can achieve good lightweight by locally reducing materials through the groove and pit structure, and the strength and overall stiffness performance of the frame of the plastic CCB are ensured by densely arranging a large number of ribs, columns and other structures, so that the plastic CCB can achieve high dynamic stiffness, thereby making the whole plastic instrument panel beam have very good overall performance.

[0039] The injection molded plastic instrument panel beam can realize the following functional effects:

[0040] (1) has better light weight effect. The ordinary steel frame structure instrument panel crossbeam (namely steel CCB), since it is welded with the stamping support on the steel pipe main body, its weight is generally above 9.5kg. And the plastic instrument panel crossbeam of the utility model adopts nylon polymer macromolecular material (PA6+GF60) injection molding, the weight can reach 4.8kg, its embedded steel (HC340) framework (thickness 1mm steel framework) weighs 1.9kg, the total weight is 6.7kg, the weight is about 70% of the steel CCB, since the light weight of the part, it has good energy saving effect on the electric vehicle.

[0041] (2) has better dimensional accuracy. The steel instrument panel crossbeam welded by the ordinary steel pipe and steel plate, since the steel plates are welded, it is easy to deform, meanwhile, the number of steel plate parts is large, the dimensional chain is long after welding, it is easy to cause the poor dimensional accuracy of the whole part, especially the dimensional accuracy of the area of the installation point of the large screen, the pipe column and the like. The integrally injection molded plastic instrument panel crossbeam of the utility model does not need repeated welding, the hole position accuracy is accurate, and better accuracy control can be achieved in the installation of other components.

[0042] (3) meets the demand of fixing components. The plastic instrument panel crossbeam (plastic CCB) of the utility model can meet the modal, stiffness and lateral force requirements of various components, meanwhile, by adjusting the composition of the macromolecular material, the stiffness of the part can be further increased without increasing other parts. Specifically, the utility model meets the three-point strength of the steering column installation point, meets the unbreakage of the lateral force loaded CCB, meets the unbreakage of the CCB under the strength demand of the airbag installation point, and meets the vertical stiffness requirement.

[0043] (4) the utility model has strong shape plasticity, and can be designed into any shape structure, which is easy to achieve platformization and generalization. The plastic instrument panel crossbeam (plastic CCB) reserves the lamp installation point and the bumper installation point of the evolved vehicle model without increasing the cost, so as to achieve the platformization and generalization of the part.

[0044] The contents not described in detail in the specification belong to the prior art known by the person skilled in the art, the standard parts used can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the mechanical parts and equipment adopt the conventional type in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and the details are not described here.

[0045] The utility model is not limited by the above-mentioned embodiments, any change, modification, replacement, combination, simplification made without departing from the spirit and principle of the utility model should be an equivalent replacement mode, and all are included in the protection scope of the utility model.

Claims

1. A new energy electric vehicle injection plastic instrument panel cross beam, comprising a cross beam main body, characterized in that: The beam body is made of plastic injection, the steel framework is embedded in the beam body, and the steel framework is made of steel bar bending; the beam body is symmetrically provided with beam ears (1) at left and right two ends, the beam ear (1) adopts a triangular cantilever shape, and the beam ear (1) is used for fixed connection with the automobile body; the front end face of the middle part of the beam body is provided with air conditioner HAVC fixing holes (301) distributed left and right, and the top surface of the middle part of the beam body is provided with air conditioner HAVC fixing pits (302) distributed left and right, and the air conditioner HAVC fixing holes (301) and the air conditioner HAVC fixing pits (302) are used for installing the air conditioner HAVC (13); the front end right side of the beam body is provided with left and right symmetric PAB fixing blocks (2), the PAB fixing block (2) is in a convex shape, and is used for installing the automobile PAB module (14); the front end left side of the beam body is provided with left and right symmetric steering column mounting surfaces (4), and the steering column mounting surface (4) is used for matched connection and installation of the steering column (15).

2. The new energy electric vehicle injection plastic instrument panel beam of claim 1, wherein: The upper and lower ends of the beam ear (1) are symmetrically provided with positioning pins (9), and the positioning pins (9) are used for positioning with the automobile body, and the beam ear (1) is installed and fastened with the automobile body through bolts.

3. The new energy electric vehicle injection plastic instrument panel beam of claim 1, wherein: Metal pressure rings are embedded on the beam ear (1), the PAB fixing block (2), the air conditioner HAVC fixing hole (301), the air conditioner HAVC fixing pit (302) and the steering column mounting surface (4).

4. The new energy electric vehicle injection plastic instrument panel beam of claim 1, wherein: The steel framework includes a steel framework one (5) and a steel framework two (6), the steel framework one (5) and the steel framework two (6) are embedded in the left and right parts in the beam body respectively, the steel framework one (5) is located at the steering column mounting surface (4), and the steel framework two (6) is located at the PAB fixing block (2).

5. The new energy electric vehicle injection plastic instrument panel beam of claim 4, wherein: The steel framework one (5) is in an "E" type structure, and the steel bar tails on the upper and lower sides thereof are respectively vertically upward and vertically downward bent to form bending parts (7), the steel framework two (6) is in an "F" type structure, and at least two inclined rib strips (8) are arranged on the other side bottom of the steel bar extending in the longitudinal direction, and the inclined rib strips (8) extend downwardly and are arranged in parallel with each other.

6. The new energy electric vehicle injection plastic instrument panel beam of claim 4, wherein: The steel framework further includes a steel framework three (10) and a steel framework four (11), the steel framework three (10) is embedded in the middle part of the beam body, and the steel framework four (11) is embedded at the beam ear (1) at the two ends of the beam body.

7. The new energy electric vehicle injection plastic instrument panel beam of claim 1, wherein: The front part, the bottom part and the rear part of the beam body are all provided with strip-shaped ribs or triangular ribs (12), and the strip-shaped ribs or triangular ribs (12) are used for strengthening the rigidity of the surface of the beam body.

8. The new energy electric vehicle injection plastic instrument panel crossbeam of any one or more of claims 1 to 7, characterized by: The beam body is made of nylon polymer high molecular material injection.

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