A method for positioning an automotive sunroof and an auxiliary installation tool for the method

Abstract

The application discloses a positioning method for an automobile sunroof and an auxiliary installation tool used in the method, and the method comprises the following steps: S1, determining a first positioning pin arrangement scheme, wherein three first positioning pin installation points are arranged on the sunroof, and the three first positioning pin installation points are respectively located at two top corners of a rear end of the sunroof and one top corner of a front end of the sunroof; S2, bonding the first positioning pins at the three first positioning pin installation points; the distance between the two first positioning pins located at the rear end of the sunroof and the rear edge of the sunroof is not greater than 0.5 mm; S3, adjusting the tail door of the automobile body by using the auxiliary installation tool; and S4, mounting the sunroof with the first positioning pins on the adjusted automobile body. The application can improve the mounting precision of the sunroof and reduce the error accumulation in the sunroof mounting process.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and more specifically to a method for positioning an automotive sunroof and an auxiliary installation tool for using this method. Background Technology

[0002] Currently, most automotive sunroofs have their main positioning pins placed at the front for precise positioning, while the secondary positioning pins are placed at the rear to prevent rotation. This causes the sunroof length tolerance to accumulate at the rear, affecting the overall vehicle's pass rate and hindering the improvement of appearance size matching quality. Existing technology cannot meet the technical specifications for overall vehicle dimensions.

[0003] The canopy is large, approximately 1.8m x 1.25m, and the manufacturing tolerance for its perimeter contour is generally above + / -1.5mm. This large dimensional tolerance is not conducive to the dimensional matching between the canopy and the surrounding parts. The main positioning pin is placed at the front end for precise positioning, while the secondary positioning pin is placed at the rear end to prevent rotation. This causes the canopy length tolerance to accumulate at the rear end, affecting the gap between the canopy and the tailgate.

[0004] In summary, reducing gaps and improving installation accuracy during the assembly of the canopy is one of the most important issues that urgently need to be addressed in this field. Summary of the Invention

[0005] The purpose of this invention is to provide a method for positioning a car sunroof and an auxiliary installation tool for the method, so as to overcome the shortcomings of the prior art. It can improve the installation accuracy of the sunroof and reduce the cumulative error between the sunroof and the tailgate.

[0006] This invention proposes a method for positioning a car sunroof, which includes the following steps:

[0007] S1, determine the arrangement scheme of the first positioning pin, wherein the canopy is provided with three first positioning pin installation points, and the three first positioning pin installation points are respectively located at two top corners at the rear end of the canopy and one top corner at the front end of the canopy;

[0008] S2, the first positioning pin is glued to the three first positioning pin mounting points; and the distance deviation between the two first positioning pins located at the rear end of the canopy and the rear edge of the canopy is no more than 0.5 mm;

[0009] S3, using auxiliary installation tools to install and adjust the tailgate of the vehicle body;

[0010] S4, the sunroof with the first positioning pin attached is installed onto the vehicle body after adjustment.

[0011] In the above-described method for positioning a car sunroof, it is optional to: in step S2, determine the bonding position using an adhesive fixture;

[0012] The bonding fixture is an L-shaped block, which is used to achieve the distance tolerance between the first positioning pin and the rear edge of the canopy.

[0013] In the above-described method for positioning a car sunroof, optionally, the first positioning pin includes an adhesive plate and a pin body.

[0014] One end of the pin is fixedly connected to one side of the adhesive plate; the included angle between the pin and the adhesive plate is 70 to 90 degrees.

[0015] In step S2, the end of the adhesive plate away from the pin is bonded to the canopy.

[0016] In the vehicle sunroof positioning method described above, step S4 optionally includes:

[0017] S41, the gap plugs are placed on the vehicle body on both sides of the rear end of the sunroof;

[0018] S42, install the sunroof at the corresponding position on the vehicle body, and make the first positioning pin engage with the corresponding positioning hole;

[0019] S43, the centering of the canopy is adjusted by the gap plug.

[0020] In the above-described method for positioning a car sunroof, optionally, the gap block includes a first plate, a second plate, a positioning block, and a first magnet.

[0021] The first plate and the second plate are vertically connected to form an L-shaped structure;

[0022] The positioning block is fixedly installed on one side of the first plate, and the fixing block and the second plate are located on the same side of the first plate; the second plate is used to control the gap between the vehicle body and the sunroof.

[0023] The positioning block has a first positioning surface on the side away from the first plate, and the first positioning surface is used to fit against the vehicle body;

[0024] The first magnet is embedded in the positioning block.

[0025] In the above-described method for positioning a car sunroof, optionally, a guide portion is provided at the edge of the second plate away from the first plate.

[0026] The thickness of the guide portion decreases along the direction closer to the first plate.

[0027] In the above-described method for positioning a car sunroof, optionally, the gap block further includes a first handle, and the first plate has a threaded hole.

[0028] One end of the first handle is screwed into the threaded hole; and the first handle is located on the side of the first plate away from the positioning block.

[0029] In the above-described method for positioning a car sunroof, optionally, a reference block is provided at each edge of the side of the sunroof that is bonded to the first positioning pin, and the reference block is used to connect with the car body.

[0030] The present invention also proposes an auxiliary installation tool for the method described in any of the preceding claims, wherein: it comprises,

[0031] The tool body has a second positioning surface on one side;

[0032] The second positioning pin is installed on the tool body, and the two second positioning pins are used to be adapted to the positioning holes on the top cover of the canopy and the positioning holes on the vehicle body, respectively.

[0033] A second magnet is embedded in the tool body. The second magnet is used to attract the car body so that the second positioning surface is in contact with the surface of the car body.

[0034] A gap block, connected to the tool body, is used to simulate the gap of the panoramic sunroof in the front-rear direction of the vehicle body during tailgate installation and adjustment, to prevent the tailgate from shifting forward during installation and adjustment. This invention proposes a...

[0035] The auxiliary installation tool of the method described above may optionally include a surface difference stop block, which is fixedly connected to the gap block;

[0036] The surface difference block is used to determine the size matching effect between the tailgate and the skylight after installation and adjustment.

[0037] Compared with existing technologies, this invention places two first positioning pin mounting points at the rear end of the sunroof and designs one first positioning pin at the front end. During positioning, it starts directly from the rear end, avoiding the accumulation of sunroof length tolerances at the rear end and preventing any impact on the gap between the sunroof and the tailgate. The auxiliary installation tool is used to simulate the installation of the sunroof to control the dimensional matching between the tailgate and the sunroof. This invention can improve the tolerance of the sunroof and tailgate matching contour from + / -1.5mm to + / -0.5mm, reducing the target deviation rate of the gap between the sunroof and the tailgate. This invention reduces the overall vehicle rework rate and improves the overall quality of the gap matching of the vehicle's exterior. Attached Figure Description

[0038] Figure 1 This is a flowchart of the steps of the vehicle sunroof positioning method proposed in this invention;

[0039] Figure 2This is a flowchart of another step in the automotive sunroof positioning method proposed in this invention;

[0040] Figure 3 This is a flowchart showing the specific steps of step S4;

[0041] Figure 4 This is a schematic diagram of the structure between the first positioning pin and the canopy proposed in this invention;

[0042] Figure 5 This is a structural diagram of the first locating pin;

[0043] Figure 6 This is a structural diagram of the bonding fixture in use;

[0044] Figure 7 This is a schematic diagram of the gap plug proposed in this invention;

[0045] Figure 8 This is a schematic diagram of the structure of the gap plug proposed in this invention during use;

[0046] Figure 9 This is a schematic diagram of the auxiliary installation tool proposed in this invention;

[0047] Figure 10 yes Figure 9 A schematic diagram of the auxiliary installation tool from another perspective.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1-First locating pin, 2-Sunroof, 3-Auxiliary installation tools, 4-Vehicle body, 5-Adhesive fittings, 6-Gap plug;

[0050] 11-Adhesive plate, 12-Pin body;

[0051] 21-Reference Block;

[0052] 31-Tool body, 32-Second positioning pin, 33-Second magnet, 34-Gap block, 35-Surface difference stop block, 36-Second handle, 37-Connecting block;

[0053] 311 - Second positioning surface;

[0054] 61-First plate, 62-Second plate, 63-Positioning block, 64-First magnet, 65-First handle;

[0055] 621 - Guiding section;

[0056] 631 - First positioning surface. Detailed Implementation

[0057] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0058] The main reasons for the problems mentioned in the background art in the existing technology are as follows: First, the large dimensional tolerances are not conducive to the dimensional matching between the sunroof and the surrounding parts; Second, placing the main positioning pin at the front end for precise positioning and the secondary positioning pin at the rear end to prevent rotation causes the sunroof length tolerance to accumulate at the rear end, affecting the gap difference with the tailgate; Third, the current assembly process involves assembling the tailgate in the body shop first, then the sunroof in the painting shop, and finally the final assembly shop. Since there is no sunroof as a reference when the tailgate is assembled and adjusted in the body shop, the gap difference matching effect cannot be accurately controlled, resulting in quality problems such as interference between the tailgate opening and closing and the sunroof, or large gaps, during final assembly line inspection; Fourth, the matching of the sunroof's perimeter involves many parts, resulting in a long dimensional chain, large cumulative errors, and great difficulty in dimensional control, directly affecting the overall vehicle's pass rate and perceived quality of appearance matching, and the rework cost after the sunroof adhesive has cured is extremely high.

[0059] To address the above problems, the present invention proposes the following embodiments.

[0060] Example 1

[0061] Please refer to Figures 1 to 3 This embodiment proposes a method for positioning a car sunroof, which includes the following steps:

[0062] S1, determine the arrangement of the first positioning pin 1, wherein the sunroof 2 has three mounting points for the first positioning pin 1, located at two apex corners at the rear end and one apex corner at the front end of the sunroof 2. In specific implementation, two mounting points for the first positioning pin 1 are placed at the rear end of the sunroof 2, and one first positioning pin 1 is designed at the front end. Positioning starts directly from the rear end, avoiding the accumulation of sunroof length tolerances at the rear end and preventing impact on the gap between the sunroof and the tailgate. Each edge of the side of the sunroof 2 that is bonded to the first positioning pin 1 is provided with a reference block 21, which is used to connect with the vehicle body. The reference block 21 is used to fit against the body sheet metal surface. In specific implementation, multiple reference blocks 21 are distributed circumferentially along the sunroof. The number of reference blocks 21 is 10 to 20; in a certain vehicle's sunroof, 16 are used.

[0063] Please refer to Figure 4In a specific positioning scheme: a first positioning pin 1 at the rear end is inserted into the corresponding positioning hole of the body sheet metal, with a pin hole fit: 0.25mm clearance on one side in the X direction and 3.0mm clearance on one side in the Y direction; another first positioning pin 1 at the rear end is inserted into the corresponding positioning hole of the body sheet metal, with a pin hole fit: 0.25mm clearance on one side in the X direction and 3.0mm clearance on one side in the Y direction; a first positioning pin 1 at the front end is inserted into the corresponding positioning hole of the body sheet metal, with a pin hole fit: 0.5mm reserved on one side in the Y direction and 3.0mm clearance on one side in the X direction, which can be finely adjusted; 16 reference blocks 21 are designed around the perimeter of the panoramic glass to fit the body sheet metal surface.

[0064] S2, the first positioning pin 1 is glued to the three mounting points of the first positioning pin 1; and the distance deviation between the two first positioning pins 1 located at the rear end of the canopy 2 and the rear edge of the canopy 2 is no greater than 0.5 mm. For specific implementation, please refer to... Figure 5 and Figure 6 The bonding position is determined by the bonding fixture 5; wherein, the bonding fixture 5 is an L-shaped block, and is used to achieve the distance tolerance between the first positioning pin 1 and the rear edge of the canopy 2. Specifically, the first positioning pin 1 includes an adhesive plate 11 and a pin body 12. The adhesive plate 11 is fixedly connected to the pin body 12, and the adhesive plate 11 is used to bond to the canopy 2.

[0065] One end of the pin 12 is fixedly connected to one side of the adhesive plate 11; the included angle between the pin 12 and the adhesive plate 11 is 70 to 90 degrees. In this step, the end of the adhesive plate 11 away from the pin 12 is bonded to the canopy 2.

[0066] In practical implementation, the pin 12, along the direction away from the adhesive plate 11, sequentially includes an effective positioning section, a first guide section, and a second guide section. The length of the effective positioning section is 3-5 mm, the diameter of the first guide section is smaller than the length of the effective positioning section, and the diameter of the second guide section gradually decreases along the direction away from the first guide section.

[0067] During bonding, it is necessary to ensure the accuracy of the bonding position. Specifically, this can be achieved through bonding fixture 5 to ensure that the distance deviation from the first positioning pin 1 to the rear edge of the skylight meets the set conditions, such as not less than 0.5 mm. By using this method, in conjunction with step S1, the dimensional tolerance of the matching contour between the skylight and the tailgate can be improved from + / -1.5 mm to + / -0.5 mm.

[0068] S3, the tailgate of the vehicle body 4 is installed and adjusted using the auxiliary installation tool 3. In specific implementation, the auxiliary installation tool 3 is used to simulate the installation of the sunroof to control the size matching between the tailgate and the sunroof. The specific process of this step can be referred to in Embodiment 2.

[0069] S4, install the sunroof 2, with the first positioning pin 1 attached, onto the adjusted vehicle body 4. This step includes the following specific steps: S41, place the gap plugs 6 at the corresponding positions on both sides of the rear end of the sunroof 2 on the vehicle body 4; in this step, please refer to... Figure 7 and Figure 8 The gap plug 6 used includes a first plate 61, a second plate 62, a positioning block 63, and a first magnet 64. The first plate 61 and the second plate 62 are vertically connected to form an L-shaped structure. The positioning block 63 is fixedly installed on one side of the first plate 61, and the fixing block and the second plate 62 are located on the same side of the first plate 61. The second plate 62 is used to control the gap between the vehicle body 4 and the skylight 2. The positioning block 63 has a first positioning surface 631 on the side away from the first plate 61, and the first positioning surface 631 is used to fit against the vehicle body. The first magnet 64 is embedded in the positioning block 63. The second plate 62 has a guide portion 621 at the edge away from the first plate 61. The thickness of the guide portion 621 decreases along the direction close to the first plate 61. Specifically, the second plate 62 has a rounded chamfer at its edge away from the first plate 61, and the guide part 621 is composed of two opposite rounded chamfers. This arrangement can prevent it from rubbing against the vehicle body or the sunroof during use and scratching the vehicle body or the sunroof.

[0070] Please refer to Figure 7 and Figure 8 The gap plug 6 further includes a first handle 65. The first plate 61 has a threaded hole. One end of the first handle 65 is screwed into the threaded hole. The first handle 65 is located on the side of the first plate 61 away from the positioning block 63. The purpose of providing the first handle 65 is to facilitate the removal of the gap plug 6 after assembly.

[0071] S42, Install the sunroof at the corresponding position on the vehicle body and align the first positioning pin 1 with the corresponding positioning hole; S43, Adjust the centering of the sunroof 2 using the gap plug 6. In practice, the final assembly workshop uses a mechanical gripper to transport the sunroof to the assembly station and assembles it according to the sunroof positioning strategy. First, observe the first positioning pin on the sunroof inserting into the corresponding positioning hole on the vehicle body. After the pin 12 is guided in, release the mechanical gripper, and the part will automatically drop. Use the glass suction cup on the mechanical gripper to press down, ensuring that the pin is not affected by the gripper's assist arm after insertion, thus avoiding pin jamming. This step controls the X and Z directions of the sunroof after assembly. A 3mm L-shaped gap plug is used on each of the rear sides to pre-attach the sides of the vehicle body to control the Y direction position and the centering of the sunroof relative to the left and right sides after assembly; then, remove the tool.

[0072] It should be noted that in this embodiment, "S1", "S2", "S3", and "S4" are merely labels and do not indicate a necessary order of operations. In this embodiment, step S2 follows step S1, and steps S2 and S3 precede step S4. Therefore, step S3 can occur before step S1, simultaneously with step S1, between step S1 and step S2, simultaneously with step S2, or even after step S2.

[0073] Example 2

[0074] Please refer to Figure 9 and Figure 10 This embodiment proposes an auxiliary installation tool, which is used in the method described in Embodiment 1, specifically in step S3. The auxiliary installation tool includes a tool body 31, second positioning pins 32, second magnets 33, and gap blocks 34. The tool body 31 supports the entire structure and is used to fit against a corresponding position on the vehicle body. One of the second positioning pins 32 simulates the first positioning pin 1 on the roof, and both second positioning pins 32 are used for positioning. The second magnet 33 is used to attract the tool body 31 to a corresponding position on the vehicle body. The second magnet 33, in conjunction with the two second positioning pins 32, restricts the six degrees of freedom of the installation tool, thus keeping it fixed during use.

[0075] The tool body 31 has a second positioning surface 311 on one side. The second positioning surface 311 can fit into a corresponding position on the vehicle body. It is used to cooperate with the second magnet 33 to fit into the corresponding position on the vehicle body.

[0076] The second positioning pin 32 is installed on the tool body 31, and the two second positioning pins 32 are used to fit into the positioning holes on the top cover of the canopy 2 and the positioning holes on the vehicle body 4, respectively. Specifically, the end of the second positioning pin 32 that is inserted into the positioning hole is tapered, serving a guiding function.

[0077] The second magnet 33 is embedded in the tool body 31 and is used to attract the vehicle body 4 so that the second positioning surface 311 fits against the surface of the vehicle body. The gap block 34 is connected to the tool body 31 and is used to simulate the gap of the sunroof 2 in the front-rear direction of the vehicle body 4 when adjusting the tailgate, so as to prevent the tailgate from moving forward during the adjustment. A surface difference stop 35 is also included, which is fixedly connected to the gap block 34. The surface difference stop 35 is used to judge the dimensional matching effect between the tailgate and the sunroof after adjustment. In a specific implementation, the installation tool also includes a second handle 36 and a connecting block 37. The gap block 34 is connected to the tool body 31 through the connecting block 37; the second handle 36 is threadedly connected to the tool body 31. In this embodiment, the installation tool simulates the actual installation state of the sunroof, so that the tailgate assembly is not affected by the corresponding vehicle body deviation, shortening the dimensional chain for matching the gap difference between the sunroof and the tailgate.

[0078] In practical implementation, two second positioning pins 32 are respectively positioned on the dome cover, corresponding to the positioning holes on the dome cover and the dome itself, to avoid reference conversion errors. One second positioning pin 32 is used to control the X and Y directions, while the other controls the X direction. By using the two positioning pins 32, all degrees of freedom except for movement along the length of the second positioning pin 32 can be restricted. In practical implementation, the two positioning pins 32 are arranged in parallel.

[0079] The second magnet 33 is used to attach to the vehicle body, providing a clamping effect; together with the two second locating pins 32, the installation tool is secured. In specific implementation, two second magnets 33 are used.

[0080] The gap between the tailgate and the panoramic sunroof simulation block in the X direction is controlled by the gap block 34. The gap size can be adjusted by adding or removing the thickness shims at the connection, which is not affected by the body deviation and can also prevent the tailgate from moving forward during assembly.

[0081] The surface difference is detected by the differential block 35 to determine the size matching effect between the tailgate and the skylight after installation and adjustment.

[0082] The second handle 36 is used to control the disassembly and assembly of the entire installation tool.

[0083] Through the above embodiments 1 and 2, the present invention can achieve precise positioning and size control of the sunroof, which is more conducive to assembly; the present invention can improve the tolerance of the matching contour of the sunroof and the tailgate from + / -1.5mm to + / -0.5mm, reduce the target deviation rate of the gap between the sunroof and the tailgate, reduce the rework rate of the whole vehicle after the production line, and improve the matching quality of the gap between the whole vehicle appearance.

[0084] In practical applications, the solution proposed in this invention was applied to a project, successfully improving the tolerance of the matching profile of the sunroof and tailgate from + / -1.5mm to + / -0.5mm; at the same time, the target deviation rate of the gap between the sunroof and tailgate was reduced from 17% to 0.09%.

[0085] It should be noted that in this application, X direction refers to the front-to-back direction of the vehicle body, Y direction refers to the left-to-right direction of the vehicle body, and Z direction refers to the up-and-down direction.

[0086] The above description, based on the embodiments shown in the figures, details the structure, features, and effects of the present invention. The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the figures. Any changes made in accordance with the concept of the present invention, or equivalent embodiments modified to have equivalent changes, that do not exceed the spirit covered by the specification and figures, should be within the protection scope of the present invention.

Claims

1. A method for positioning a car sunroof, characterized in that: Includes the following steps, S1, determine the arrangement scheme of the first positioning pin (1), wherein the canopy (2) is provided with three first positioning pin (1) installation points, and the three first positioning pin (1) installation points are respectively located at the two top corners of the rear end of the canopy (2) and at the top corner of the front end of the canopy (2); S2, the first positioning pin (1) is glued to the three first positioning pin (1) mounting points; and the distance deviation between the two first positioning pins (1) located at the rear end of the canopy (2) and the rear edge of the canopy (2) is not greater than 0.5 mm; S3, use auxiliary installation tool (3) to install and adjust the tailgate of the vehicle body (4); S4, install the canopy (2) with the first positioning pin (1) attached to it onto the vehicle body (4) after adjustment; Step S4 includes, S41, the gap plug (6) is placed at the vehicle body (4) on both sides of the rear end of the canopy (2); S42, install the sunroof at the corresponding position on the vehicle body, and make the first positioning pin (1) engage with the corresponding positioning hole; S43, the centering of the canopy (2) is adjusted by the gap plug (6); The gap plug (6) includes a first plate (61), a second plate (62), a positioning block (63), and a first magnet (64); The first plate (61) and the second plate (62) are vertically connected to form an L-shaped structure; The positioning block (63) is fixedly installed on one side of the first plate (61), and the positioning block (63) and the second plate (62) are located on the same side of the first plate (61); the second plate (62) is used to control the gap between the vehicle body (4) and the skylight (2); The positioning block (63) has a first positioning surface (631) on the side away from the first plate (61), and the first positioning surface (631) is used to fit with the vehicle body; The first magnet (64) is embedded in the positioning block (63); The second plate (62) has a guide portion (621) at its edge away from the first plate (61). The thickness of the guide portion (621) decreases along the direction close to the first plate (61); Also includes: The tool body (31) has a second positioning surface (311) on one side. The second positioning pin (32) is installed on the tool body (31). The two second positioning pins (32) are used to be adapted to the positioning holes on the top cover of the canopy (2) and the positioning holes on the vehicle body (4), respectively. The second magnet (33) is embedded in the tool body (31). The second magnet (33) is used to attract the car body (4) so ​​that the second positioning surface (311) is in contact with the surface of the car body. The gap block (34) is connected to the tool body (31). The gap block (34) is used to simulate the gap of the canopy (2) in the front and rear direction of the vehicle body (4) when the tailgate is installed and adjusted, so as to prevent the tailgate from moving forward when it is installed and adjusted.

2. The method for positioning a car sunroof according to claim 1, characterized in that: In step S2, the bonding position is determined by the bonding fixture (5); The bonding fixture (5) is an L-shaped block, and the distance tolerance between the first positioning pin (1) and the rear edge of the canopy (2) is achieved.

3. The method for positioning a car sunroof according to claim 1, characterized in that: The first positioning pin (1) includes an adhesive plate (11) and a pin body (12); One end of the pin (12) is fixedly connected to one side of the adhesive plate (11); the included angle between the pin (12) and the adhesive plate (11) is 70 to 90 degrees. In step S2, the end of the adhesive plate (11) away from the pin (12) is bonded to the canopy (2).

4. The method for positioning a car sunroof according to claim 1, characterized in that: The gap plug (6) also includes a first handle (65), and the first plate (61) is provided with a threaded hole; One end of the first handle (65) is screwed to the threaded hole; and the first handle (65) is located on the side of the first plate (61) away from the positioning block (63).

5. The method for positioning a car sunroof according to any one of claims 1-4, characterized in that: Each edge of the canopy (2) is provided with a reference block (21) on the side where it is bonded to the first positioning pin (1), and the reference block (21) is used to connect with the vehicle body.

6. The method for positioning a car sunroof according to any one of claims 1-4, characterized in that: It also includes a surface difference stop (35), which is fixedly connected to the gap block (34); The surface difference stop (35) is used to determine the size matching effect between the tailgate and the skylight after installation and adjustment.

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