Mounting tool for quickly adjusting posture of vehicle door

Abstract

The invention belongs to the technical field of automobile production, and provides a device for quickly adjusting the posture of an automobile door, which comprises a bottom plate, a rotating shaft, a T-shaped combined sample plate, a hinge positioning mechanism, an automobile body positioning mechanism and a rotating adjusting and locking mechanism, the rotating shaft is mounted on the bottom plate, and the hinge positioning mechanism is mounted on the T-shaped combined sample plate; the T-shaped combined sample plate is used for adjusting and curing the coaxiality of the upper hinge and the lower hinge of the vehicle door, and is rotatably mounted on the bottom plate through a rotating shaft on the premise of curing; the vehicle body positioning mechanism is installed on the bottom plate and used for positioning and pressing the harness to the vehicle body and adjusting the position deviation of the vehicle door through translation movement of the vehicle body positioning mechanism. The inclination angle of the vehicle door is adjusted by changing the rotating angle of the T-shaped combined sample plate around the rotating shaft, and the T-shaped combined sample plate is locked at the needed angle through the rotating adjusting and locking mechanism. In the tool debugging process, the coaxiality of the upper hinge and the lower hinge cannot be changed, the posture of the vehicle door can be rapidly adjusted, and the debugging efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile production, in particular to a device for quickly adjusting the posture of a vehicle door. BACKGROUND

[0002] As a key component for connecting the vehicle door of a modern automobile, the profile steel hinge is subjected to a complex and highly demanding process of adjusting the posture of the vehicle door during the industrialization debugging stage of the automobile. This debugging work has the characteristics of strict sequence, long continuous period and repeated debugging for many times. The entire debugging process needs to strictly follow the established process flow, and any deviation in any step may cause the final state of the vehicle door to not meet the design requirements.

[0003] The factors affecting the posture of the vehicle door are multiple and complex, mainly including the sinking amount of the vehicle door after assembly, the flatness of the hinge and the body attachment surface, the tightening torque of the hinge fixing bolt, and the manufacturing precision of the body-in-white, etc. These factors are coupled with each other, and any fluctuation of any factor may have a significant impact on the position, gap and surface difference of the vehicle door. Therefore, the debugging personnel must conduct a large number of systematic tests and meticulous measurement data collection, and use professional tools and methods to analyze the data, so as to accurately adjust the assembly fixture or positioning device, so that the various indicators of the vehicle door finally stably reach the design standards and requirements.

[0004] Compared with the traditional stamping hinge, the profile steel hinge is being adopted by more and more vehicle models due to its significant advantages in strength, precision, carrying capacity, durability and performance of opening and closing the vehicle door, etc. One of its core advantages is to realize the operation of “disassembling the shaft and disassembling” in the general assembly workshop: only the top screw of the connecting pin shaft needs to be disassembled, the vehicle door assembly can be lifted upwards, the body side hinge block is separated from the pin shaft, and the disassembly of the vehicle door is conveniently completed. This design greatly improves the operation convenience and efficiency of the general assembly line when installing the instrument panel and other interior parts. In terms of performance parameters, the profile steel hinge also performs well. Its strength is improved by about 30% compared with the traditional stamping hinge, which can more effectively resist impact and deformation. The control of the vehicle door sinking amount is also excellent, which is reduced by about 0.7 mm on average compared with the stamping hinge, which helps to maintain the accurate positioning and good sealing of the vehicle door for a long time. In addition, the optimized rotation characteristics make the closing force and closing speed of the vehicle door reach a better state, which improves the user experience and perception quality.

[0005] The side face assembly process in the welding workshop is the basis for ensuring the accuracy of the posture of the vehicle door, and the core steps include: 1. using a fixture to install the upper half hinge on the vehicle door; 2. using a device to install the lower half hinge on the vehicle body; 3. inserting the vehicle door assembly into the vehicle body through the hinge shaft.

[0006] Further, the side face door posture debugging step comprises: 1, the coaxiality of the door end and the vehicle body end, and the up and down hinges is debugged to a qualified state; 2, the X translation, Z translation, Y translation and overall rotation of the hinge are adjusted through the door hinge fixture; wherein, during the adjustment of the overall rotation, the coaxiality of the hinge cannot be changed (the unqualified coaxiality will lead to the difficulty in disassembling the door). Further, the overall rotation adjustment is the key and difficulty in the debugging process. When the adjustment is performed, it is necessary to strictly ensure that the coaxiality of the up and down hinge pin shafts does not change. The coaxiality deviation will directly lead to the increase of the opening and closing resistance of the door, abnormal sound, and even difficulty in disassembling the door in the assembly workshop (the pin shaft cannot be smoothly pulled out or assembled), therefore, the fixture design must focus on ensuring the stability of the coaxiality, so as to realize the rapid adjustment of the door posture. SUMMARY

[0007] In view of the deficiencies in the prior art, the present application provides a fixture for rapidly adjusting the posture of a door, which can ensure that the coaxiality of the up and down hinges does not change during the debugging process of the fixture, so as to realize the rapid adjustment of the door posture and improve the debugging efficiency.

[0008] To achieve the above object and related objects, the present application provides a fixture for rapidly adjusting the posture of a door, comprising a bottom plate, a rotating shaft, a T-shaped combined template, a hinge positioning mechanism, a vehicle body positioning mechanism and a rotating adjustment and locking mechanism, the rotating shaft is installed on the bottom plate, the hinge positioning mechanism is installed on the T-shaped combined template and is used for adjusting and fixing the coaxiality of the up and down hinges of the door, the T-shaped combined template is rotatably installed on the bottom plate through the rotating shaft on the premise that the coaxiality of the up and down hinges is fixed; the vehicle body positioning mechanism is installed on the bottom plate and is used for positioning and pressing the fixture to the vehicle body and adjusting the positional deviation of the door through the translational movement thereof; the T-shaped combined template adjusts the inclination angle of the door by changing the rotation angle thereof around the rotating shaft and locks the T-shaped combined template at the required angle through the rotating adjustment and locking mechanism.

[0009] Further, the bottom plate is in a frame structure, and a double-layer welded plate for installing the rotating shaft and the T-shaped combined template is arranged on the bottom plate.

[0010] Further, a plurality of first shims are further included, the vehicle body positioning mechanism comprises a main positioning pin, a secondary positioning pin and a plurality of Y-direction supporting and pressing members, the vehicle body positioning mechanism adjusts the X-direction translational deviation of the door relative to the vehicle body by adjusting the X-direction first shims on the main positioning pin; adjusts the Z-direction translational deviation of the door relative to the vehicle body by adjusting the Z-direction first shims on the main positioning pin and the secondary positioning pin; and adjusts the Y-direction translational deviation of the door relative to the vehicle body by adjusting the Y-direction first shims on the Y-direction supporting and pressing members.

[0011] Furthermore, it also includes multiple second shims. By adjusting the number of second shims between the T-shaped assembly template and the base plate, the rotation angle of the T-shaped assembly template around the rotation axis can be adjusted to adjust the tilt angle of the car door.

[0012] Furthermore, the distance between the installation position of the second gasket and the rotation axis is one-third of the door length.

[0013] Furthermore, the hinge positioning mechanism includes a first positioning component for initial positioning of the door hinge in the X and Y directions, and an X-direction adjusting shim, a Y-direction adjusting shim, and a Z-direction adjusting shim for secondary adjustment and solidification of the coaxiality of the upper and lower door hinges.

[0014] Furthermore, the hinge positioning mechanism includes a first cylinder for pressing the door hinge in the Z direction.

[0015] Furthermore, the vehicle positioning mechanism also includes a second cylinder for pressing the fixture Y-axis onto the vehicle body.

[0016] Furthermore, the rotation adjustment and locking mechanism includes multiple locking screws.

[0017] Furthermore, the T-shaped assembly template includes multiple first screws, and multiple screw holes are provided on the base plate, with the first screws having a unilateral movement clearance in the screw holes.

[0018] The beneficial technical effects of this invention are as follows:

[0019] The hinge positioning mechanism of this invention completes and solidifies the coaxiality adjustment of the upper and lower hinges on a T-shaped assembly template. This process is independent of the vehicle body positioning mechanism on the base plate, and the T-shaped assembly template is connected to the base plate only through a rotation shaft. Therefore, when the coaxiality adjustment of the upper and lower hinges on the T-shaped assembly template is completed, it can be solidified by tightening screws to ensure that subsequent adjustments to the door will not affect the coaxiality of the upper and lower hinges. This application adjusts the positional deviation between the door and the vehicle body and the door tilt angle by rotating the T-shaped assembly template as a whole or translating the entire fixture, thereby ensuring that the coaxiality of the upper and lower hinges remains unchanged while quickly adjusting the door posture.

[0020] This invention is universally applicable and suitable for vehicle models with similar structures. Compared to traditional methods, this invention reduces door posture adjustment time by approximately 70%, significantly improving adjustment efficiency.

[0021] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0022] The accompanying drawings, incorporated in and forming part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without inventive effort. In the drawings:

[0023] Figure 1 This is a schematic diagram of an exemplary device structure for this application;

[0024] Figure 2 This is a partial exploded view of an exemplary device of this application;

[0025] Figure 3 This is a schematic diagram of the base plate structure of this application;

[0026] Figure 4 This is a partial structural diagram of the vehicle body positioning mechanism of this application;

[0027] Figure 5 Here is a partial exploded view of another exemplary device of this application;

[0028] Figure 6 This is a partial structural diagram of the vehicle body positioning mechanism of this application;

[0029] Figure 7 This is a schematic diagram of the hinge positioning mechanism structure of this application;

[0030] Figure 8 This is a schematic diagram showing the translation of the fixture in this application via the vehicle body positioning mechanism;

[0031] Figure 9 This is a partial schematic diagram of the assembly of the hinge positioning mechanism and the T-shaped combination template in this application;

[0032] Figure 10 This is a partial schematic diagram of the hinge positioning mechanism of this application;

[0033] Figure Labels

[0034] 1: Base plate; 2: T-shaped combination template; 3: Rotating shaft; 4: Hinge positioning mechanism; 5: Body positioning mechanism; 6: Rotation adjustment and locking mechanism; 22: Weight reduction hole; 51: Main positioning pin; 52: Secondary positioning pin; 53: Support clamping component; 54: First shim; 41: X-direction adjusting shim; 42: Y-direction adjusting shim; 43: Z-direction adjusting shim; 61 (a, b, c, d, e, f): Locking screw; 62: Second shim. Detailed Implementation

[0035] Unless otherwise defined, all technical and / or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should be understood that certain features of the invention (described in the context of separate embodiments for clarity) may also be provided in a single embodiment. Conversely, multiple features of the invention (described in the context of a single embodiment for brevity) may also be provided separately or in any suitable combination or, where appropriate, in any other described embodiment of the invention. Certain features described in the context of various embodiments will not be considered essential features of those embodiments unless the embodiment is inoperable without those elements. The invention is further illustrated below by specific examples; however, it should be noted that the specific process conditions and results described in the embodiments of the invention are merely illustrative and should not be construed as limiting the scope of protection of the invention. All equivalent changes or modifications made in accordance with the spirit and essence of the invention should be covered within the scope of protection of the invention.

[0036] like Figures 1 to 10 As shown, this invention provides a device for quickly adjusting the posture of a car door, including a base plate 1, a rotating shaft 3, a T-shaped combination template 2, a hinge positioning mechanism 4, a body positioning mechanism 5, and a rotation adjustment and locking mechanism 6. The rotating shaft 3 is mounted on the base plate 1, and the hinge positioning mechanism 4 is mounted on the T-shaped combination template 2 to adjust and solidify the coaxiality of the upper and lower hinges of the car door. Under the premise that the coaxiality of the upper and lower hinges is solidified, the T-shaped combination template 2 is rotatably mounted on the base plate 1 via the rotating shaft 3. The body positioning mechanism 5 is mounted on the base plate 1 to position and press the device against the car body, and to adjust the positional deviation of the car door through its translational movement. The T-shaped combination template 2 adjusts the tilt angle of the car door by changing its rotation angle around the rotating shaft 3, and the rotation adjustment and locking mechanism 6 locks the T-shaped combination template 2 at the desired angle.

[0037] Furthermore, such as Figure 1 and Figure 3As shown, the base plate 1 of this application has a frame structure, and a double-layer welded plate is provided on the base plate 1 for mounting the rotating shaft 3 and the T-shaped combined template 2. Furthermore, the base plate 1 of this application is a frame structure welded from profiles, with a cross-section of 40mm × 40mm, plus a 10mm thick welded plate. Circular holes with a diameter of 20mm are machined on the double-layer welded plate for mounting the rotating shaft 3; M8 and M6 threaded holes are machined on the welded plate for mounting the first screws. The T-shaped combined template 2 is rotatably mounted on the base plate 1 via the rotating shaft 3, and then tightened onto the base plate 1 by six first screws. The base plate 1 has multiple screw holes, and the first screws have a 1.5mm single-sided clearance in the screw holes. The base plate 1 of this application has high bending and torsional stiffness, ensuring that the base plate 1 itself will not deform due to external forces or its own weight during debugging, providing a stable reference platform for subsequent debugging. The single-sided movement clearance of the first screw in the screw hole allows for minor translational adjustments within the plane of the base plate 1 (in the X and Z directions) before the T-shaped composite template 2 is tightened and fixed. The T-shaped composite template 2 of this application is provided with multiple weight-reducing holes 22, which significantly reduce the weight of the entire T-shaped composite template 2 while ensuring structural strength and rigidity.

[0038] Furthermore, Figure 1 , Figure 2 , Figure 7 , Figure 9 and Figure 10 As shown, the hinge positioning mechanism 4 includes a first positioning element for initial positioning of the door hinge in the X and Y directions, and X-direction adjusting shims 41, Y-direction adjusting shims 42, and Z-direction adjusting shims 43 for secondary adjustment and solidification of the coaxiality of the upper and lower door hinges. The hinge positioning mechanism 4 includes a first cylinder for pressing the door hinge in the Z direction. On the T-shaped assembly template 2, the hinge positioning mechanism 4 uses the first positioning element, such as a clamp, to restrict the freedom of the upper and lower hinges in the X and Y directions, completing coarse positioning and establishing a stable foundation for subsequent precision adjustments. Then, the shims are precisely adjusted by adding or removing X-direction adjusting shims 41, Y-direction adjusting shims 42, and Z-direction adjusting shims 43 based on measurement data to achieve precise compensation, ensuring that the axes of the upper and lower hinges are aligned. The action of the first cylinder provides a stable pressing force in the Z direction. After the coaxiality of the upper and lower hinges is adjusted, solidification is completed, and no further adjustments are required except in special circumstances. Once the coaxiality is established, when adjusting the gap between the door and the body on the vehicle body, the entire hinge positioning mechanism will translate or rotate without changing its internal coaxiality. This application utilizes a first cylinder to provide a stable clamping force, ensuring consistent clamping force compared to manual locking, and preventing Z-axis position changes or loosening of the lower hinge due to human error. Furthermore, the use of shims and a button-driven first cylinder clamping method reduces over-reliance on operator experience, ensuring consistent product quality.

[0039] Furthermore, such as Figure 1 and Figure 2 As shown, this application also includes multiple second shims 62. By adjusting the number of second shims 62 between the T-shaped assembly template 2 and the base plate 1, the rotation angle of the T-shaped assembly template 2 around the rotation axis 3 can be adjusted to adjust the tilt angle of the car door. The installation position of the second shims 62 in this application is approximately one-third of the length of the car door from the rotation axis 3, and the adjustment lever is approximately 3 times. Furthermore, the T-shaped assembly template 2 rotates around the rotation axis 3 as a fulcrum, and the second shims 62 are located at the rear of the T-shaped assembly template 2. According to the lever principle, inserting a second shim 62 of thickness A at this location will cause the front part of the T-shaped assembly template 2 (the end where the car door is installed) to displace by approximately 3A. When it is necessary to change the Z-direction gap between the rear of the car door and the upper part of the side panel, the tilt angle of the car door can be precisely controlled by adding or removing the second shims 62 between the T-shaped assembly template 2 and the base plate 1, achieving millimeter-level precision adjustment. For example, adjusting the second shim 62 by 0.2mm will affect the gap surface difference by 0.6mm.

[0040] Furthermore, the rotation adjustment and locking mechanism 6 of this application includes multiple locking screws 61. After the rotation adjustment is completed, since the front of the T-shaped combination template 2 is heavier than the rear, the second shim 62 needs to be pressed tightly in the Z direction with the locking screws 61 after adjustment, and then locked in the Y direction to eliminate the mechanism gap and ensure adjustment accuracy. As an example, the adjustment sequence of the rotation adjustment in this application can be: loosen the locking screws 61 (a, b), tighten the locking screws 61 (e, f); loosen the locking screws 61 (c, d), tighten the locking screws 61 (c, d); loosen the locking screws 61 (f), tighten the locking screws 61 (a); loosen the locking screws 61 (e), tighten the locking screws 61 (b).

[0041] Furthermore, such as Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 8As shown, this application also includes multiple first shims 54. The vehicle body positioning mechanism 5 includes a main positioning pin 51, a secondary positioning pin 52, and multiple Y-direction support clamping members 53. The vehicle body positioning mechanism 5 adjusts the X-direction translational deviation of the door relative to the vehicle body by adjusting the X-direction first shims 54 on the main positioning pin 51; adjusts the Z-direction translational deviation of the door relative to the vehicle body by adjusting the Z-direction first shims 54 on the main positioning pin 51 and the secondary positioning pin 52; and adjusts the Y-direction translational deviation of the door relative to the vehicle body by adjusting the Y-direction first shims 54 on the Y-direction support clamping members 53. The vehicle body positioning mechanism 5 also includes a second cylinder for pressing the fixture Y-direction onto the vehicle body. Furthermore, the thickness of the multiple first shims 54 in this application can be different, for example, 2mm, 0.5mm, 0.3mm, and 0.2mm, with a total thickness of 3mm, etc. This application's fixture adjusts translational deviations via the vehicle body positioning mechanism 5. For example, in the X-axis translation, the X-axis first shim 54 of the main positioning pin 51 is adjusted, causing the entire fixture (including the hinges and door) to move along the X-axis. In the Z-axis translation, the Z-axis first shims 54 of the main positioning pin 51 and the secondary positioning pin 52 are adjusted simultaneously, causing the entire fixture to move along the Z-axis. In the Y-axis translation, the four Y-axis support clamping parts 53 are adjusted, causing the entire fixture to move along the Y-axis, thereby correcting the overall positional deviation of the door. This application uses a second cylinder to firmly press the entire fixture onto the vehicle body in the Y-axis direction (usually the inward and outward direction of the vehicle), ensuring that no relative movement occurs between the fixture and the vehicle body during subsequent debugging.

[0042] Furthermore, the steps for using the device described in this application are as follows:

[0043] (1) Install the upper and lower hinges of the car door onto the mounting bases corresponding to the hinge positioning mechanism 4, and perform preliminary positioning of the hinges in the X and Y directions by the first positioning component.

[0044] (2) Pressing the button will initially press the hinge in the Z direction through the first cylinder;

[0045] (3) Adjust the X-axis adjusting shim 41, Y-axis adjusting shim 42 and Z-axis adjusting shim 43 of the hinge positioning mechanism 4 until the coaxiality of the upper and lower hinges meets the design requirements. After the coaxiality is adjusted, tighten all the screws of the hinge positioning mechanism 4 in the specified order and torque to solidify the coaxiality of the upper and lower hinges.

[0046] (4) Push the entire fixture along the Y direction onto the vehicle body so that the main positioning pin 51 and the auxiliary positioning pin 52 of the vehicle body positioning mechanism 5 are precisely inserted into the positioning holes on the vehicle body door frame to complete the precise positioning in the X and Z directions.

[0047] (5) Press the button to press the entire fixture onto the vehicle body in the Y direction through the second cylinder, thus completing the fixation;

[0048] (6) By adding, deleting or adjusting the first shim 54 on the vehicle body positioning mechanism 5, the position of the fixture relative to the vehicle body is changed, thereby adjusting the X, Y and Z translational deviations of the door;

[0049] (7) By adding or removing the second shim 62 between the T-shaped combination template 2 and the base plate 1, the T-shaped combination template 2 rotates slightly around the rotation axis 3, thereby adjusting the tilt angle of the car door. After the adjustment is in place, the rotation adjustment and locking mechanism 6 is used to lock all the locking screws 61 in the prescribed order to firmly lock the T-shaped combination template 2 at the current temperature, thereby completing the rapid adjustment of the car door posture.

[0050] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A device for quickly adjusting the posture of a vehicle door, characterized in that, The system includes a base plate (1), a rotating shaft (3), a T-shaped combination template (2), a hinge positioning mechanism (4), a vehicle body positioning mechanism (5), and a rotation adjustment and locking mechanism (6). The rotating shaft (3) is mounted on the base plate (1), and the hinge positioning mechanism (4) is mounted on the T-shaped combination template (2) to adjust and solidify the coaxiality of the upper and lower hinges of the door. Under the premise that the coaxiality of the upper and lower hinges is solidified, the T-shaped combination template (2) is rotatably mounted on the base plate (1) via the rotating shaft (3). The vehicle body positioning mechanism (5) is mounted on the base plate (1) to position and press the fixture to the vehicle body, and to adjust the position deviation of the door through its translational movement. The T-shaped combination template (2) adjusts the tilt angle of the door by changing its rotation angle around the rotating shaft (3), and locks the T-shaped combination template (2) at the required angle through the rotation adjustment and locking mechanism (6).

2. The apparatus according to claim 1, characterized in that, The base plate (1) has a frame structure, and a double-layer welded plate for mounting the rotating shaft (3) and the T-shaped combined template (2) is provided on the base plate (1).

3. The apparatus according to claim 2, characterized in that, It also includes multiple first shims (54). The vehicle body positioning mechanism (5) includes a main positioning pin (51), a secondary positioning pin (52) and multiple Y-direction support clamping members (53). The vehicle body positioning mechanism (5) adjusts the X-direction translational deviation of the door relative to the vehicle body by adjusting the X-direction first shims (54) on the main positioning pin (51); adjusts the Z-direction translational deviation of the door relative to the vehicle body by adjusting the Z-direction first shims (54) on the main positioning pin (51) and the secondary positioning pin (52); and adjusts the Y-direction translational deviation of the door relative to the vehicle body by adjusting the Y-direction first shims (54) on the Y-direction support clamping member (53).

4. The apparatus according to claim 3, characterized in that, It also includes multiple second shims (62), and by adjusting the number of the second shims (62) between the T-shaped combination template (2) and the base plate (1), the rotation angle of the T-shaped combination template (2) around the rotation axis (3) is adjusted to adjust the tilt angle of the door.

5. The apparatus according to claim 4, characterized in that, The distance between the installation position of the second gasket (62) and the rotating shaft (3) is one-third of the length of the door.

6. The apparatus according to claim 5, characterized in that, The hinge positioning mechanism (4) includes a first positioning component for initial positioning of the door hinge in the X and Y directions, and an X-direction adjusting shim (41), a Y-direction adjusting shim (42), and a Z-direction adjusting shim (43) for secondary adjustment and solidification of the coaxiality of the upper and lower hinges of the door.

7. The apparatus according to claim 6, characterized in that, The hinge positioning mechanism (4) includes a first cylinder for pressing the door hinge in the Z direction.

8. The apparatus according to claim 7, characterized in that, The vehicle positioning mechanism (5) also includes a second cylinder for pressing the fixture Y-axis onto the vehicle body.

9. The apparatus according to claim 8, characterized in that, The rotation adjustment and locking mechanism (6) includes multiple locking screws.

10. The apparatus according to claim 9, characterized in that, The T-shaped combined template (2) includes multiple first screws, and the base plate (1) is provided with multiple screw holes, wherein the first screws have a unilateral movable clearance in the screw holes.

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