Checking method of instrument panel assembly

Abstract

The invention provides an instrument panel assembly checking method, the instrument panel assembly comprises an instrument panel and a cross beam assembly comprising a cross beam body, a forward blowing channel, a wire harness and an air conditioning box, the instrument panel comprises an instrument panel body with an air outlet and a side blowing channel, the cross beam body comprises a cross beam tubular beam and a cross beam support, an outlet of the forward blowing channel is communicated with the air outlet, and the cross beam support is connected with the cross beam tubular beam. The wire harnesses comprise a main wire harness and branch wire harnesses, the instrument board body and the cross beam body are fixedly connected through positioning pins, and the air conditioner box is in compression joint with the side blowing air channel; the checking method of the instrument panel assembly comprises the following steps: acquiring the section of the instrument panel assembly, an X-direction gap BX between a side blowing air channel and a cross beam tubular beam, an X-direction gap DX between the lowest end of an instrument panel body and a cross beam bracket, and the length A of a positioning pin; the constraint condition of the instrument panel assembly comprises BXgt; dX, BXgt; a. The relative position relation of the cross air blowing channel, the cross beam support, the cross beam tubular beam and the instrument panel body is limited, a corresponding assembling path limiting face is generated, and assembling feasibility of the instrument panel assembly is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of automobiles, and in particular relates to a calibration method for an instrument panel assembly. Background Art

[0002] After the design of the car dashboard assembly is completed, it is usually necessary to sub-assemble the dashboard offline and then install it on the car body on the assembly line. The car dashboard assembly is generally composed of the dashboard body and the dashboard cross beam (CCB). At the same time, various controllers, switches, instruments, air conditioning boxes, air ducts, instrument wiring harnesses, etc. need to be installed in the dashboard assembly. The common offline sub-assembly forms of the dashboard assembly are as follows: the first step is to sub-assemble the parts on the CCB: the air conditioning box, the front air duct, the instrument wiring harness, the fuse box, the gateway module, the air conditioning box black box, the communication module, etc. are first fixed to the CCB; the second step is to sub-assemble the parts on the dashboard body: the side air duct, the defrost air duct, the passenger air bag (PAB), the 4G antenna, etc. are installed and fixed to the dashboard body. The third step is to assemble the dashboard body to the CCB: the dashboard body and the parts it carries are assembled to the CCB together, where the locating pins on the dashboard body are inserted into the corresponding holes of the CCB to match them in place, and the air duct of the air conditioning box on the dashboard body will be pressed to the air outlet of the air conditioning box on the CCB to match them in place; the fourth step is to install the remaining parts to the dashboard assembly: the steering tube beam, various instruments, switches, trim panels, etc. are installed to the dashboard assembly.

[0003] Among them, the feasibility of the third step, the assembly of the instrument panel body to the CCB, is the key to the feasibility of the instrument panel assembly design. To verify the feasibility of the instrument panel assembly, it is necessary to first understand its assembly path. The boundary of the instrument panel system is relatively complex, and the assembly path will be subject to many constraints, including the direction and length of the instrument panel body to the locating pin, the structure of the instrument panel body and the CCB, the parts assembled on the instrument panel body, the parts assembled on the CCB, etc.

[0004] At present, when checking the assembly feasibility of the instrument panel assembly, there is no specific verification method to limit the relevant constraints in the early design stage. Therefore, if there are no relevant constraints in the early design stage, once the shape is locked, the structural form of the relevant parts will be difficult to adjust. In the subsequent engineering stage, there may be no assembly path in the offline assembly process of the instrument panel assembly. During the assembly, the instrument panel will be stuck by various structures and cannot be installed in place. If the design is drastically overturned or the various parts structure are adjusted to avoid it in the engineering stage, the workload will increase, the cost will rise, and even various performances will be sacrificed to meet the manufacturing feasibility of the instrument panel assembly. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that in the prior art, when verifying the assembly feasibility of the instrument panel assembly, there is no specific verification method to limit the relevant constraints in the early design stage, which leads to the situation that there is no assembly path and it is necessary to significantly overturn the modeling or adjust the structure of various parts, thereby increasing the workload, raising the cost and even sacrificing various performances to meet the manufacturing feasibility of the instrument panel assembly.

[0006] To solve the above problems, an embodiment of the present invention discloses a calibration method for an instrument panel assembly, wherein the instrument panel assembly includes an instrument panel and a crossbeam assembly, wherein the instrument panel includes an instrument panel body and a side-blowing air duct, the instrument panel body is provided with an air outlet, the crossbeam assembly includes a crossbeam body, a front-blowing air duct, a wiring harness and an air-conditioning box, the crossbeam body includes a crossbeam tube beam and a crossbeam bracket, the outlet of the front-blowing air duct is connected to the air outlet, the wiring harness includes a main wiring harness and a branch wiring harness, the air-conditioning box is crimped and connected to the side-blowing air duct, and the instrument panel body and the crossbeam body are fixedly connected by positioning pins.

[0007] The verification method of the instrument panel assembly includes: obtaining the cross section of the instrument panel assembly, obtaining the X-direction clearance B between the side blowing duct and the cross beam tube beam based on the cross section X , X-direction clearance D between the bottom end of the instrument panel and the crossbeam bracket X and the length A of the locating pin; the constraints of the instrument panel assembly include: B X >D X , B X >A.

[0008] The above technical solution is used to obtain the cross section of the instrument panel assembly. In the cross section, the X-direction clearance B between the side blowing duct and the cross beam is required. X Greater than the X-direction clearance D between the bottom of the instrument panel and the crossbeam support X , X-direction clearance B between the side blowing duct and the crossbeam tube beam X It is greater than the length A of the locating pin, which defines the relative position relationship between the side air duct and the crossbeam tube and the relationship between the length A of the locating pin, as well as the relative position relationship between the side air duct, the crossbeam bracket, the crossbeam tube and the instrument panel body, and generates the corresponding assembly path restriction surface, which can guide the optimization of the structural design of the side air duct, crossbeam bracket, crossbeam tube and the instrument panel body in the instrument panel assembly during the styling design stage, thereby ensuring the feasibility of the assembly of the instrument panel assembly, avoiding a large number of changes in the later stage, saving design and development costs, shortening the R&D cycle, and meeting the styling and customer demands.

[0009] According to another specific embodiment of the present invention, the verification method of the instrument panel assembly disclosed in the embodiment of the present invention further includes obtaining an X-direction clearance E between the lower boundary of the air outlet and the boundary of the instrument panel body. X The Z-direction height difference E between the point and the lower boundary of the outletZ , and the Z-direction height difference B between the side blowing duct and the crossbeam tube beam Z , and E X =Bx; the constraints of the instrument panel assembly also include: E Z >B Z .

[0010] By adopting the above technical solution, the X-direction clearance E between the boundary of the instrument panel body and the lower boundary of the air outlet is required in the cross section. X The Z-direction height difference E between the point and the lower boundary of the outlet Z Greater than the Z-direction height difference B between the side blowing duct and the cross beam Z This further limits the relative position relationship between the air outlet, the instrument panel body, the side air duct, and the crossbeam, further ensuring the feasibility of the assembly of the instrument panel assembly.

[0011] According to another specific embodiment of the present invention, the verification method of the instrument panel assembly disclosed in the embodiment of the present invention further includes obtaining the X-direction clearance C between the main wiring harness and the cross beam tube beam based on the cross section. X , the X-direction gap H between the boundary of the instrument panel and the lower boundary of the air outlet X The Z-direction height difference H between the point and the lower boundary of the outlet Z And the Z-direction height difference C between the main harness and the crossbeam Z , and H X =B X +C X ; The constraints of the instrument panel assembly also include: H Z >(C Z +B Z ).

[0012] By adopting the above technical solution, the X-direction clearance H between the boundary of the instrument panel body and the lower boundary of the air outlet is required in the cross section. X The Z-direction height difference H between the point and the lower boundary of the outlet Z Greater than the Z-direction height difference B between the side blowing duct and the cross beam Z The Z-direction height difference C between the main harness and the crossbeam Z The sum further limits the relative position relationship of the air outlet, the instrument panel body, the side air duct, the crossbeam and the main wiring harness, further ensuring the feasibility of the assembly of the instrument panel assembly.

[0013] According to another specific embodiment of the present invention, the verification method of the instrument panel assembly disclosed in the embodiment of the present invention obtains the X-direction clearance F from the side blowing duct to the top of the left boundary of the beam assembly based on the cross section. X , X-direction gap G between the bottom of the instrument panel and the lower boundary of the air outlet X ; The constraints of the instrument panel assembly also include: FX >G X .

[0014] By adopting the above technical solution, the X-direction clearance F between the side blowing duct and the top of the left boundary of the beam assembly is required in the cross section. X Greater than the X-direction gap G between the bottom of the instrument panel body and the lower boundary of the air outlet X , further limiting the relative position relationship among the side-blowing air duct, the upper boundary of the crossbeam assembly, the instrument panel body, and the air outlet, further ensuring the feasibility of the assembly of the instrument panel assembly.

[0015] According to another specific embodiment of the present invention, the verification method of the instrument panel assembly disclosed in the embodiment of the present invention obtains the X-direction clearance F from the side blowing duct to the top of the left boundary of the beam assembly based on the cross section. X , X-direction gap G between the bottom of the instrument panel and the lower boundary of the air outlet X , the Z-direction clearance Fz from the side blowing duct to the top of the left boundary of the beam assembly, and the Z-direction clearance G between the bottom end of the instrument panel body and the lower boundary of the air outlet Z ; The constraints of the instrument panel assembly also include: If F X >G X , when F X <G X When F Z <G Z .

[0016] By adopting the above technical solution, the X-direction clearance F between the side blowing duct and the top of the left boundary of the beam assembly is required in the cross section. X Smaller than the X-direction gap G between the bottom of the instrument panel body and the lower boundary of the air outlet X The Z-direction clearance Fz from the side blowing duct to the top of the left boundary of the crossbeam assembly is smaller than the Z-direction clearance G from the bottom end of the instrument panel body to the lower boundary of the air outlet. Z , further limiting the relative position relationship among the side-blowing air duct, the upper boundary of the crossbeam assembly, the instrument panel body and the air outlet, further ensuring the feasibility of the assembly of the instrument panel assembly.

[0017] According to another specific embodiment of the present invention, the verification method of the instrument panel assembly disclosed in the embodiment of the present invention is based on the cross section, and the side blowing duct and the cross beam tube beam are provided with a first safety gap K in the X direction, and the constraint conditions of the instrument panel assembly also include: B X >D X +2K.

[0018] By adopting the above technical solution, a first safety gap K is required to be set between the side blowing duct and the cross beam tube beam in the X direction in the cross section, and the X-direction gap B between the side blowing duct and the cross beam tube beam is required to be set between the side blowing duct and the cross beam tube beam in the X direction. X Greater than the X-direction clearance D between the bottom of the instrument panel and the crossbeam supportX The sum of twice the first safety gap K further limits the relative position relationship of the side-blowing air duct, the crossbeam tube beam, the instrument panel body and the crossbeam bracket, further ensuring the feasibility of the assembly of the instrument panel assembly.

[0019] According to another specific embodiment of the present invention, in the verification method of the instrument panel assembly disclosed in the embodiment of the present invention, the constraint conditions of the instrument panel assembly also include: B X >A+K.

[0020] Adopting the above technical solution, the X-direction clearance B between the side blowing duct and the cross beam pipe beam is required in the cross section. X It is greater than the sum of the length A of the locating pin and the first safety gap K, further limiting the relative position relationship between the side-blowing air duct and the crossbeam tube beam and the relationship between the length of the locating pin, and further ensuring the feasibility of the assembly of the instrument panel assembly.

[0021] According to another specific embodiment of the present invention, in the calibration method of the instrument panel assembly disclosed in the embodiment of the present invention, the first safety gap K is 5 mm to 6 mm.

[0022] According to another specific embodiment of the present invention, in the verification method of the instrument panel assembly disclosed in the embodiment of the present invention, a second safety gap M is provided in the X direction between the main wiring harness and the cross beam tube beam based on the cross section.

[0023] By adopting the above technical solution, it is required in the cross section that a second safety gap M is provided in the X direction between the main wiring harness and the cross beam tube beam, which further ensures the feasibility of assembling the instrument panel assembly.

[0024] According to another specific embodiment of the present invention, in the calibration method of the instrument panel assembly disclosed in the embodiment of the present invention, the second safety gap M is 5 mm to 6 mm.

[0025] The beneficial effects of the present invention are:

[0026] The instrument panel assembly verification method provided by the present invention obtains the cross section of the instrument panel assembly, and requires the X-direction clearance B between the side blowing duct and the cross beam tube beam in the cross section. X Greater than the X-direction clearance D between the bottom of the instrument panel and the crossbeam support X , X-direction clearance B between the side blowing duct and the crossbeam tube beam XIt is greater than the length A of the locating pin, which defines the relative position relationship between the side air duct and the crossbeam tube and the length A of the locating pin, as well as the relative position relationship between the side air duct, the crossbeam bracket, the crossbeam tube and the instrument panel body, and generates the corresponding assembly path restriction surface. It can guide the optimization of the structural design of the side air duct, the front air duct, the crossbeam bracket, the crossbeam tube, the main wiring harness direction and the instrument panel body in the instrument panel assembly during the styling design stage, thereby ensuring the feasibility of the assembly of the instrument panel assembly, avoiding a large number of changes in the later stage, saving design and development costs, shortening the R&D cycle, and meeting the styling and customer demands. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a structural schematic diagram of an instrument panel of an instrument panel assembly provided by an embodiment of the present invention;

[0028] Figure 2 is an exploded view of an instrument panel of an instrument panel assembly provided by an embodiment of the present invention;

[0029] Figure 3 is a structural schematic diagram of a crossbeam assembly of an instrument panel assembly provided by an embodiment of the present invention;

[0030] Figure 4 is an exploded view of a crossbeam assembly of an instrument panel assembly provided by an embodiment of the present invention;

[0031] Figure 5 is a structural schematic diagram of an instrument panel and a crossbeam assembly of an instrument panel assembly provided by an embodiment of the present invention before assembly;

[0032] Figure 6 is a structural schematic diagram of an instrument panel assembly provided by an embodiment of the present invention;

[0033] Figure 7 It is a schematic structural diagram of a cross section of an instrument panel assembly provided by an embodiment of the present invention.

[0034] Description of reference numerals:

[0035] 100: instrument panel; 110: instrument panel body; 111: air outlet; 120: side air duct; 200: crossbeam assembly; 210: crossbeam body; 211: crossbeam tube beam; 212: crossbeam bracket; 220: front air duct; 230: wiring harness; 231: main wiring harness; 240: air conditioning box; 300: positioning pin. DETAILED DESCRIPTION

[0036] In order to solve the problem that in the prior art, when verifying the assembly feasibility of an instrument panel assembly, there is no specific verification means to limit the relevant constraints in the early design stage, which leads to the problem that there is no assembly path, the present invention provides a verification method for an instrument panel assembly, which limits the relative position relationship of multiple components in the instrument panel assembly, generates corresponding assembly path restriction surfaces, and ensures the feasibility of the assembly of the instrument panel assembly.

[0037] The parts involved in the assembly path analysis of the instrument panel assembly can generally be divided into two parts. One part is the assembly subject, i.e. the instrument panel, which refers to the part body that needs to be installed on the opponent part. It is assembled to the corresponding structure according to the installation path and is a moving part. The other part is the assembly receptor, i.e. the beam assembly, which refers to the part body that accepts other parts to be installed on its own structure and cooperates with it, and is generally a fixed part.

[0038] The main parts involved in the assembly of the crossbeam assembly, such as Figure 1 and Figure 2 As shown, it includes the instrument panel body, the front defrost duct and the side blowing duct. Most of the front defrost duct is integrated with the instrument panel body. Here, it is considered that the front defrost duct belongs to the instrument panel body, while the side blowing duct needs to be assembled to the instrument panel body before assembly, thereby dividing the assembly body boundary. Figure 2 The arrows indicate the assembly direction of the corresponding parts.

[0039] The main parts involved in the assembly receptor of the instrument panel to the crossbeam assembly, such as Figure 3-Figure 6 As shown, it includes a cross car beam (CCB), a wiring harness, an air conditioning box and a positive blowing air duct. The wiring harness, the air conditioning box and the positive blowing air duct need to be first assembled into the cross car beam body before assembly, thereby dividing the assembly receptor boundary. The positive blowing air duct is limited by the positive air outlet of the air conditioning box and the air outlet position of the instrument panel body. Specifically, one end of the positive blowing air duct is connected to the positive air outlet of the air conditioning box, and the other end is connected to the air outlet of the instrument panel body, and after the assembly of the instrument panel assembly is completed, it is necessary to install a plug-in air outlet trim between the air outlet of the instrument panel body and the other end of the positive blowing air duct. Since the air outlet trim has not been installed when the instrument panel assembly is assembled, but one end of the air outlet trim is at the air outlet position of the instrument panel body, and the other end is docked with the positive blowing air duct, the air outlet position of the instrument panel body will seriously limit the structural direction of the positive blowing air duct. Therefore, in order to facilitate understanding, in this embodiment, the lower boundary point on the positive blowing air duct docked with the air outlet trim is used as the lower boundary point of the air outlet of the instrument panel body. Figure 4 The arrows indicate the assembly direction of the corresponding parts.

[0040] According to the division of assembly parts, the relevant boundaries of the instrument panel to crossbeam assembly can be extracted and the following Figure 7The preliminary path planning at the cross-section stage shown simulates the envelope surface of the dashboard boundary on the assembly path, thereby restricting the boundaries of related parts on the beam assembly.

[0041] Virtual assembly path simulation is the reverse analysis of the actual assembly path. According to the relative position relationship of each part on the cross section, the assembly path is analyzed as follows: ① withdraw from the distance B along the locating pin direction ā (i.e. the length direction of the vehicle), and the distance B is greater than the length A of the locating pin → ② then lift up in the Z direction (i.e. the height direction of the vehicle) to cross the beam assembly → ③ move along the X direction (i.e. the length direction of the vehicle) a distance C to the main harness → ④ lift up in the Z direction to cross the main harness → ⑤ cross the top of the parts on the beam assembly.

[0042] The first step of assembly path simulation includes: first, the instrument panel needs to move a distance B along the direction of the positioning pin to withdraw the positioning pin from the crossbeam assembly, and stop when the side blowing duct approaches the crossbeam tube beam of the crossbeam body. At this time, it is required that the boundary of the assembly body and the boundary of the assembly receptor do not interfere with each other, and there is a certain safety gap K. Therefore, the moving distance B plus the safety gap K is equal to the X-direction gap B from the side blowing duct to the crossbeam tube beam X , and the moving distance B is at least greater than the length A of the positioning pin; at the same time, when the withdrawal distance B is reached, the lowermost boundary of the instrument panel is required to be able to withdraw from the obstruction of the crossbeam support of the crossbeam body in the X direction. When the instrument panel is lifted upward and crosses the crossbeam tube beam, the lowermost end of the instrument panel is not blocked and restricted by the crossbeam support, so B is greater than D X and K.

[0043] The second step of assembly path simulation: the instrument panel crosses the crossbeam tube height B in the Z direction Z .

[0044] In the third step of assembly path simulation, the instrument panel moves in the X direction by a distance C to the side air duct close to the main wiring harness, leaving a 5mm safety gap, so C = C X -5mm.

[0045] The fourth step of assembly path simulation is to cross the main harness height C in the Z direction of the instrument panel Z .

[0046] In the fifth step of the assembly path simulation, the instrument panel moves from the main wiring harness to the upper boundary of the beam assembly and exits the restriction of the assembly receptor, i.e. the beam assembly.

[0047] In addition, since the air outlet of the instrument panel body is connected to the positive air duct, part of the boundary of the positive air duct belongs to the part boundary of the crossbeam assembly, and it is required that there is no interference with the positive air duct on the instrument panel assembly path, so the lower boundary point of the air outlet of the instrument panel body, that is, the lower boundary point on the positive air duct, is moved horizontally to the crossbeam body by E. X =B XWhen the Z-direction distance Ez between the boundary point on the instrument panel section and the lower boundary point of the air outlet of the instrument panel body, that is, the lower boundary point on the front air duct, needs to be greater than the Z-direction height B of the crossbeam tube of the crossbeam body from the side air duct. Z , that is to say, the X-direction gap E is the lower boundary of the air outlet on the boundary of the instrument panel body from the instrument panel body. X =B X The Z-direction height difference E between the point and the lower boundary of the outlet Z , must be greater than the Z-direction height difference B from the side blowing duct to the crossbeam tube beam Z At this time, when the instrument panel moves from the origin across the beam tube beam, the lower end of the instrument panel body will not interfere with the positive air duct. And the lower boundary point of the air outlet of the instrument panel body moves horizontally toward the beam body by H X =C X When the Z-direction distance between the point on the instrument panel section and the lower boundary point of the air outlet of the instrument panel body is Z It must be greater than the Z-direction height difference B between the side blowing duct and the crossbeam tube beam Z The Z-direction height difference C between the main harness and the crossbeam Z , that is, H Z >(C Z +B Z ), when the instrument panel moves from the origin across the main wiring harness, the lower end of the instrument panel body will not interfere with the positive air duct.

[0048] Therefore, the key factors affecting assembly include: the relative position between the side blowing duct and the crossbeam tube beam, the crossbeam tube beam and the main wiring harness (B X , B Z )、(C X , C Z ); The relative position between the bottom of the instrument panel and the crossbeam support (D X , D Z ); X-direction clearance E between the boundary of the instrument panel body and the lower boundary of the air outlet of the instrument panel X =B X When the Z-direction height difference E Z ; X-direction clearance H between the dashboard body boundary and the lower boundary of the dashboard air outlet X =B X +C X When the Z-direction height difference H Z ; The relative position of the side blowing duct and the top of the beam body boundary (F X , F Z ); The relative position between the lower end of the instrument panel body and the lower outer end of the positive air duct (G X , G Z ).

[0049] Next, refer to the attached Figure 1-Figure 7, the calibration method of the instrument panel assembly provided by the present invention and the advantages of the method are described in detail.

[0050] The instrument panel assembly calibration method provided by the present invention is as follows: Figure 1-Figure 6 As shown, the instrument panel assembly includes an instrument panel 100 and a cross beam assembly 200, wherein Figure 1 and Figure 2 As shown, the instrument panel 100 includes an instrument panel body 110 and a side blowing air duct 120, and an air outlet 111 is provided on the instrument panel body 110. Figure 3 and Figure 4 As shown, the crossbeam assembly 200 includes a crossbeam body 210, a positive blowing duct 220, a wiring harness 230 and an air conditioning box 240. The crossbeam body 210 includes a crossbeam tube beam 211 and a crossbeam bracket 212. The outlet of the positive blowing duct 220 is connected to the air outlet 111. The wiring harness 230 includes a main wiring harness 231 and a branch wiring harness, as shown in FIG. Figure 5-Figure 7 As shown, the air conditioning box 240 is crimped to the side blowing air duct 120 , and the instrument panel body 110 and the cross beam body 210 are fixedly connected by the positioning pins 300 .

[0051] The instrument panel body 110 and the side blowing air duct 120 are fixedly connected, the front blowing air duct 220 and the side blowing air duct 120 are fixed on the air conditioning box 240, the side blowing air duct 120 is located above the air conditioning box 240, and the air conditioning box 240 is crimped to the upper side blowing air duct 120, and the air conditioning box 240 and the wiring harness 230 are fixed on the cross beam body 210. The instrument panel body 110 is limited and fixed on the cross beam bracket 212 of the cross beam body 210 by moving the positioning pin 300 along the length direction of the vehicle. The main wiring harness 231 is laid on the cross beam tube beam 211, and the branch wiring harness is separated from the main wiring harness 231 and connected to other electrical components.

[0052] In one embodiment of the present invention, a method for verifying an instrument panel assembly includes: Figure 7 As shown, the cross section of the instrument panel assembly is obtained, and the X-direction clearance B between the side blowing duct 120 and the cross beam tube beam 211 is obtained based on the cross section. X , the X-direction gap D between the bottom end of the instrument panel body 110 and the crossbeam support 212 X , and the length A of the positioning pin 300; the constraints of the instrument panel assembly include: B X >D X , B X >A.

[0053] Figure 7 The dotted arrow in shows the virtual assembly path of the instrument panel 100 (ie, the reverse path of the actual assembly path).

[0054] The cross section of the instrument panel assembly is the cross section of the instrument panel assembly on the XZ plane of the vehicle. The X direction represents the length direction of the vehicle, with the left side representing the rear of the vehicle and the right side representing the front of the vehicle; the Z direction represents the height direction of the vehicle.

[0055] The above constraint conditions indicate that: when the side blowing air duct 120 moves close to the cross beam tube beam 211, the positioning pin 300 has already exited the cross beam bracket 212, that is, Bx>A. Since it is necessary to lift up in the Z direction after exiting in the direction of the positioning pin 300, at this time, the lifting path of the lower end of the instrument panel 100, that is, the lower end of the instrument panel body 110, cannot be blocked, so when the side blowing air duct 120 moves close to the cross beam tube beam 211, the lower end of the instrument panel body 110 has already exited the Z-direction constraint of the cross beam assembly 200, that is, Bx>Dx.

[0056] By adopting the above technical solution, the cross section of the instrument panel assembly is obtained, and the X-direction clearance B between the side blowing duct 120 and the cross beam tube beam 211 is required in the cross section. X Greater than the X-direction gap D between the bottom end of the instrument panel body 110 and the crossbeam support 212 X , the X-direction clearance B between the side blowing air duct 120 and the cross beam tube beam 211 X The length A is greater than the locating pin 300, thereby limiting the relative position relationship among the side air duct 120, the cross beam tube beam 211, the cross beam bracket 212 and the lower end of the instrument panel body 110, and generating a corresponding assembly path restriction surface, which can guide the optimization of the structural design of the side air duct 120, the cross beam tube beam 211, the cross beam bracket 212 and the instrument panel body 110 in the instrument panel assembly during the styling design stage, thereby ensuring the feasibility of the assembly of the instrument panel assembly, avoiding a large number of changes at a later stage, saving design and development costs, shortening the R&D cycle, and satisfying the styling and customer demands at the same time.

[0057] In one embodiment of the present invention, a first safety gap K is provided between the side blowing air duct 120 and the cross beam tube beam 211 in the X direction, and the constraint conditions of the instrument panel assembly also include: B X >D X +2K.

[0058] The above constraints indicate that: when the side-blowing air duct 120 moves close to the cross-beam tube beam 211, it is required that there is a first safety gap K between the side-blowing air duct 120 and the cross-beam tube beam 211 in the X direction, and the moving distance B plus the safety gap K is equal to the X-direction gap Bx between the side-blowing air duct 120 and the cross-beam tube beam 211. At the same time, when the withdrawal distance B is reached, it is required that the lowermost boundary of the instrument panel body 110 can withdraw from the obstruction of the cross-beam bracket 212 in the X direction. When the instrument panel 100Z is lifted upward and crosses the cross-beam tube beam 211, the lowermost end of the instrument panel body 110 is not blocked and restricted by the cross-beam bracket 212. Therefore, B is greater than the sum of Dx and K, that is, B X >D X +2K.

[0059] By adopting the above technical solution, a first safety gap K is required to be set between the side blowing duct 120 and the cross beam tube beam 211 in the X direction in the cross section, and the X-direction gap B between the side blowing duct 120 and the cross beam tube beam 211 is X Greater than the X-direction gap D between the bottom end of the instrument panel body 110 and the crossbeam support 212 X The sum of the two times of the first safety gap K further limits the relative position relationship among the side blowing air duct 120, the cross beam tube beam 211, the instrument panel body 110, and the cross beam bracket 212, and further ensures the feasibility of the assembly of the instrument panel assembly.

[0060] In one embodiment of the present invention, the method for verifying the instrument panel assembly further includes: Figure 7 As shown, the X-direction gap E is obtained from the lower boundary of the air outlet 111 on the boundary of the instrument panel body 110 X The Z-direction height difference E between point b and the lower boundary of the air outlet 111 Z , and the Z-direction height difference B between the side blowing air duct 120 and the cross beam tube beam 211 Z , and E X =Bx; the constraints of the instrument panel assembly also include: E Z >B Z .

[0061] In this embodiment, the lower boundary of the air outlet 111 is as follows: Figure 7 The figure shows the leftmost point a of the lower boundary of the air outlet 111 .

[0062] The above constraints indicate that: when the side-blowing air duct 120 moves close to the cross-beam tube beam 211, the lower boundary of the instrument panel body 110 and the side-blowing air duct 120 move the same distance, and the side-blowing air duct 120 is required to be able to cross the Z-direction height difference with the cross-beam tube beam 211, while the lower boundary of the instrument panel body 110 cannot be blocked by the air outlet 111 when it is lifted up, that is, when the point where the lower boundary of the instrument panel body 110 matches the air outlet 111 moves a distance Ex=Bx, Ez>Bz is required.

[0063] By adopting the above technical solution, the X-direction gap E is required between the boundary of the instrument panel body 110 and the lower boundary of the air outlet 111 in the cross section. X The Z-direction height difference E between point b and the lower boundary of the air outlet 111 Z Greater than the Z-direction height difference B between the side blowing air duct 120 and the cross beam tube beam 211 Z This further limits the relative position relationship between the air outlet 111, the side blowing air duct 120, and the cross beam tube beam 211, and further ensures the feasibility of the assembly of the instrument panel assembly.

[0064] In one embodiment of the present invention, the instrument panel assembly verification method further includes: Figure 7As shown, the X-direction clearance C between the main wiring harness 231 and the cross beam tube beam 211 is obtained based on the cross section. X , the X-direction gap H between the boundary of the instrument panel body 110 and the lower boundary of the air outlet 111 X The Z-direction height difference H between point c and the lower boundary of the air outlet 111 Z and the Z-direction height difference C between the main harness 231 and the cross beam tube beam 211 Z , and H X =B X +C X ; The constraints of the instrument panel assembly also include: H Z >(C Z +B Z ).

[0065] The above constraints indicate that: the X-direction distance between the side-blowing air duct 120 and the main wiring harness 231 is Cx+Bx, and the Z-direction height difference is Cz+Bz; when the side-blowing air duct 120 moves to the instrument main wiring harness 231 and can cross over in the Z-direction, the lower boundary of the instrument panel body 110 is required to be lifted up and not blocked by the air outlet 111, that is, when the point where the lower boundary of the instrument panel body 110 matches the lower boundary of the air outlet 111 moves a distance of Hx=Cx+Bx, Hz>(Cz+Bz) is required.

[0066] By adopting the above technical solution, in the cross section, the boundary of the instrument panel body 110 is required to be at an X-direction gap H from the lower boundary of the air outlet 111. X Greater than the Z-direction height difference B between the side blowing air duct 120 and the cross beam tube beam 211 Z The Z-direction height difference C between the main harness 231 and the cross beam tube beam 211 Z The sum further defines the relative position relationship of the air outlet 111, the side blowing air duct 120, the cross beam tube beam 211 and the main wiring harness 231 of the instrument panel 100. In this way, according to the lower end boundary of the instrument panel body 110 in the cross section, the envelope surface is swept out on the assembly path, and the range where the positive blowing air duct 220 can be arranged outside the restricted surface can be analyzed. If the positive blowing air duct 220 can match the air outlet 111 within the effective range, the position of the air outlet 111 is reasonable. If the positive blowing air duct 220 cannot match the air outlet 111 within the effective range, the position of the air outlet 111 is unreasonable. The feasibility of the assembly of the instrument panel assembly is further guaranteed.

[0067] In one embodiment of the present invention, Figure 7 As shown, the X-direction clearance F from the side blowing duct 120 to the top of the left boundary of the beam assembly 200 is obtained based on the cross section. X , the X-direction gap G between the lower end of the instrument panel body 110 and the lower boundary of the air outlet 111 X ; The constraints of the instrument panel assembly also include: F X >G X .

[0068] In this embodiment, the top of the left boundary of the crossbeam assembly 200 is generally the top of the boundary of the crossbeam bracket 212 that matches the positioning pin 300. However, if the air outlet 111 of the instrument panel body 110 is above and the positive air duct 220 exceeds the top boundary of the crossbeam bracket 212, at this time, the top of the left boundary of the crossbeam assembly 200 is the upper boundary of the positive air duct 220.

[0069] The above constraint means that the side air duct 120 has an X-direction distance Fx and a Z-direction height difference Fz from the upper boundary of the crossbeam assembly 200. When the side air duct 120 exits the boundary of the crossbeam assembly 200, it is required that the lower boundary of the instrument panel body (moving along the same path as the side air duct 120) is not blocked by the positive air duct 220. If Gx < Fx, when the positive air duct 220 crosses the upper boundary of the crossbeam assembly 200, the lower boundary of the instrument panel body 110 has already been错开 from the positive air duct 220 and is not restricted by the Z-direction of the positive air duct 220.

[0070] Adopting the above technical solution, in the cross-section, it is required that the X-direction gap F from the side air duct 120 to the top of the left boundary of the crossbeam assembly 200 X is greater than the X-direction gap G between the lowermost end of the instrument panel body 110 and the lower boundary of the air outlet 111 X , further defining the relative positional relationship between the side air duct 120, the boundary of the crossbeam assembly 200, and the air outlet 111 of the instrument panel body 110, and further ensuring the feasibility of assembling the instrument panel assembly.

[0071] In an embodiment of the present invention, as Figure 7 shown, the X-direction gap F from the side air duct 120 to the top of the left boundary of the crossbeam assembly 200 is obtained based on the cross-section X , the X-direction gap G between the lowermost end of the instrument panel body 110 and the lower boundary of the air outlet 111 X , the Z-direction gap Fz from the side air duct 120 to the top of the left boundary of the crossbeam assembly 200, and the Z-direction gap G between the lowermost end of the instrument panel body 110 and the lower boundary of the air outlet 111 Z ; the constraints of the instrument panel assembly further include: F X < G X , F Z < G Z .

[0072] The above constraint means that if Gx > Fx, when the side air duct 120 crosses the upper boundary of the crossbeam assembly 200, the lower boundary of the instrument panel body 110 has not yet exited the restriction of the positive air duct 220, and it is required that Gz > FZ so that the lower boundary of the instrument panel body 110 will not be blocked when it is lifted.

[0073] By adopting the above technical solution, the X-direction clearance F between the side blowing duct 120 and the top of the left boundary of the beam assembly 200 is required to be X smaller than the X-direction gap G between the lower end of the instrument panel body 110 and the lower boundary of the air outlet 111 X The Z-direction gap Fz from the side blowing duct 120 to the top of the left boundary of the beam assembly 200 is smaller than the Z-direction gap G between the bottom end of the instrument panel body 110 and the lower boundary of the air outlet 111. Z , further defines the relative position relationship among the side-blowing air duct 120, the upper boundary of the crossbeam assembly 200, the instrument panel body 110, and the air outlet 111, further ensures the feasibility of the assembly of the instrument panel assembly, and at the same time gives the layout range of the front-blowing air duct 220, guiding the reasonable design of the position of the air outlet 111 of the instrument panel.

[0074] In one embodiment of the present invention, the constraint conditions of the instrument panel assembly also include: B X >A+K.

[0075] By adopting the above technical solution, the X-direction clearance B between the side blowing duct 120 and the cross beam tube beam 211 is required in the cross section. X The length A greater than the sum of the locating pin 300 and the first safety gap K further limits the relative position relationship between the side-blowing air duct 120 and the crossbeam tube beam 211 , further ensuring the feasibility of assembling the instrument panel assembly.

[0076] The above constraints indicate that: when the side-blowing air duct 120 moves close to the cross-beam tube beam 211, a first safety gap K is required between the side-blowing air duct 120 and the cross-beam tube beam 211 in the X-direction, and the movement distance B plus the safety gap K is equal to the X-direction gap Bx from the side-blowing air duct 120 to the cross-beam tube beam 211, and the distance B is at least greater than the length of the positioning pin 300, that is, A<B=(Bx-5mm).

[0077] In one embodiment of the present invention, based on the cross section, a second safety gap M is provided in the X direction between the main wiring harness 231 and the cross beam tube beam 211 .

[0078] By adopting the above technical solution, it is required in the cross section that a second safety gap M is provided in the X direction between the main wiring harness 231 and the cross beam tube beam 211, which further ensures the feasibility of assembling the instrument panel assembly.

[0079] In one embodiment of the present invention, the second safety gap M is 5 mm to 6 mm.

[0080] Therefore, the total constraint conditions for the instrument panel assembly are: Bx > Dx, Bx > A, Ez > Bz, Hz > (Cz + Bz), Fx > Gx or Fx < Gx, and Fz < Gz. Based on the above constraint conditions, an assembly path limit surface is generated to determine the feasibility of the instrument panel assembly, analyze the rationality of the styling structure design and part layout of the corresponding parts, and guide the optimization of the structures and styling of the side air ducts, front air ducts, crossbeam brackets, crossbeam pipes, main wire harness routes, and the instrument panel body in the instrument panel assembly. Thus, a high-quality instrument panel assembly that is feasible for engineering manufacturing and fitting can be designed, which can avoid a large number of late-stage modifications, save design and development costs, shorten the R & D cycle, and meet the styling and customer requirements at the same time.

[0081] The above uses specific specific embodiments to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with preferred embodiments, this does not mean that the features of this invention are limited to this implementation manner. On the contrary, the purpose of introducing the invention in conjunction with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, many specific details will be included in the above description. The present invention can also be implemented without using these details. In addition, in order to avoid confusing or obscuring the key points of the present invention, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0082] It should be noted that in this specification, similar reference numerals and letters indicate similar items in the above drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0083] The terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0084] Although the present invention has been illustrated and described by referring to some preferred embodiments of the present invention, those of ordinary skill in the art should understand that the above content is a further detailed description of the present invention in combination with specific implementation manners, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A method for calibrating an instrument panel assembly, the instrument panel assembly comprising an instrument panel and a crossbeam assembly, wherein: The instrument panel comprises an instrument panel body and a side blowing air duct, the instrument panel body is provided with an air outlet, the crossbeam assembly comprises a crossbeam body, a front blowing air duct, a wiring harness and an air conditioning box, the crossbeam body comprises a crossbeam tube beam and a crossbeam bracket, the outlet of the front blowing air duct is communicated with the air outlet, the wiring harness comprises a main wiring harness and a branch wiring harness, the air conditioning box is crimped and connected to the side blowing air duct, and the instrument panel body and the crossbeam body are fixedly connected by a locating pin; characterized in that the verification method of the instrument panel assembly comprises: Obtain the cross section of the instrument panel assembly, and obtain the X-direction gap B between the side blowing duct and the cross beam tube beam based on the cross section X , the X-direction gap D between the bottom end of the instrument panel body and the crossbeam support X and the length A of the positioning pin; The constraints of the instrument panel assembly include: X >D X , B X >A.

2. The instrument panel assembly calibration method according to claim 1, characterized in that: The instrument panel assembly verification method further includes obtaining an X-direction clearance E between the boundary of the instrument panel body and the lower boundary of the air outlet. X The Z-direction height difference E between the point and the lower boundary of the outlet Z , and the Z-direction height difference B between the side blowing air duct and the cross beam tube beam Z , and E X =B x ; The constraints of the instrument panel assembly also include: Z >B Z .

3. The instrument panel assembly calibration method according to claim 2, characterized in that: The instrument panel assembly verification method further includes obtaining an X-direction clearance C between the main wiring harness and the cross beam based on the cross section. X The X-direction gap H between the boundary of the instrument panel body and the lower boundary of the air outlet X The Z-direction height difference H between the point and the lower boundary of the outlet Z and the Z-direction height difference C between the main harness and the cross beam tube beam Z , and H X =B X +C X ; The constraints of the instrument panel assembly also include: Z >(C Z +B Z ).

4. The instrument panel assembly calibration method according to claim 3, characterized in that: Based on the cross section, the X-direction clearance F between the side blowing duct and the top of the left boundary of the beam assembly is obtained. X , the X-direction gap G between the lower end of the instrument panel body and the lower boundary of the air outlet X ; The constraints of the instrument panel assembly also include: X >G X .

5. The instrument panel assembly calibration method according to claim 3, characterized in that: Based on the cross section, the X-direction clearance F between the side blowing duct and the top of the left boundary of the beam assembly is obtained. X , the X-direction gap G between the lower end of the instrument panel body and the lower boundary of the air outlet X , the Z-direction gap Fz from the side blowing duct to the top of the left boundary of the beam assembly, and the Z-direction gap G between the bottom end of the instrument panel body and the lower boundary of the air outlet Z ; The constraints of the instrument panel assembly also include: if F cannot be satisfied X >G X , when F X <G X When F Z <G Z .

6. The instrument panel assembly calibration method according to claim 4 or 5, characterized in that: Based on the cross section, a first safety gap K is provided between the side blowing air duct and the cross beam tube beam in the X direction, and the constraint conditions of the instrument panel assembly also include: B X >D X +2K.

7. The instrument panel assembly calibration method according to claim 6, characterized in that: The constraints of the instrument panel assembly also include: B X >A+K.

8. The instrument panel assembly calibration method according to claim 7, characterized in that: The first safety gap K is 5 mm to 6 mm.

9. The instrument panel assembly calibration method according to claim 8, characterized in that: Based on the cross section, a second safety gap M is provided in the X direction between the main wiring harness and the cross beam tube beam.

10. The instrument panel assembly calibration method according to claim 9, characterized in that: The second safety gap M is 5 mm to 6 mm.

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