Method for improving assembly accuracy of concealed door handle

Abstract

The application discloses a method for improving assembly precision of a hidden car door handle, which comprises the following steps: using a hidden car door handle profile edge, a hidden car door handle profile surface and a hidden car door handle edge as an assembly reference; using a double-end stud to fix the hidden car door handle from inside a door; loosening the X and Z directions of the double-end stud by tightening a nut; inserting a door handle tool into a gap between the hidden car door handle and the door, the door handle tool being provided with a through hole matched with the hidden car door handle, and the hidden car door handle being embedded in the door handle tool; fixing the X and Z directions of the door handle tool, and tightening the Y direction; removing the door handle tool, and slightly adjusting the double-end stud to adjust the Y direction surface difference of the hidden car door handle profile surface. The method for improving assembly precision of the hidden car door handle is used to associate the hidden car door handle with a door outer plate through tool control and double-end stud adjustment, avoid the influence of a door inner plate assembly on the position of the hidden handle, and improve the assembly precision of the hidden handle.

Description

Technical Field

[0001] This invention relates to the field of vehicle assembly technology, and in particular to a method for improving the assembly precision of concealed door handles. Background Technology

[0002] With advancements in automotive manufacturing processes, many car models have begun using concealed door handles. Concealed door handles give a premium look and reduce wind resistance. However, the higher the vehicle's price point, the more stringent the overall aesthetic requirements, necessitating a precise fit between the concealed door handle and the door panel. Therefore, improving the accuracy of this fit is a key factor in enhancing the assembly quality of concealed door handles.

[0003] Therefore, there is an urgent need for a method to improve the assembly precision of concealed door handles. Summary of the Invention

[0004] The purpose of this invention is to provide a method for improving the assembly accuracy of concealed door handles, so as to solve the problems in the prior art and improve the pass rate of the gap surface difference between the concealed door handle and the door panel.

[0005] This invention provides a method for improving the assembly precision of concealed car door handles, comprising:

[0006] The door handle profile and the hidden door handle edge are used as the assembly reference.

[0007] A concealed door handle is fixed from the inside of the door using a double-ended stud, wherein the double-ended stud is adjustable in the X, Y and Z directions;

[0008] Loosen the double-ended stud in the X and Z directions by tightening the nut;

[0009] The door handle is manually inserted into the gap between the concealed door handle and the door, wherein the door handle is manually inserted and has a through hole that matches the shape of the concealed door handle so that the concealed door handle can be embedded in the door handle.

[0010] After fixing the concealed door handle in the X and Z directions, tighten it in the Y direction;

[0011] Remove the door handle by hand and fine-tune the double-ended studs to adjust the Y-axis surface difference of the concealed door handle profile.

[0012] The method for improving the assembly precision of concealed door handles as described above, preferably, involves using double-ended studs to fix the concealed door handle from inside the door, specifically including:

[0013] The hidden door handle is installed from the inside of the car door;

[0014] The concealed door handle is fixed from the inside of the car door using double-ended studs.

[0015] The method for improving the assembly precision of concealed door handles as described above, preferably, involves manually inserting the door handle into the gap between the concealed door handle and the door, specifically including:

[0016] Using a tool handle, insert the door handle assembly from the outside of the car door so that the contoured surface of the door handle assembly fits against the car door, wherein the tool handle is perpendicular to the working surface of the door handle assembly.

[0017] The method for improving the assembly precision of concealed door handles as described above, preferably, involves tightening the concealed door handle in the Y direction after fixing it in the X and Z directions, specifically including:

[0018] After the concealed handle contour is embedded into the door handle by hand, the three tightening nuts are fixed in the X and Z directions by plugs respectively. Then, the three tightening nuts on the concealed door handle are tightened in the Y direction to fix the inner door panel and the door handle. The plugs are matched with the dimensions of the door handle and the tightening nuts.

[0019] The method for improving the assembly precision of concealed door handles as described above, preferably, involves manually removing the door handle and fine-tuning the double-ended studs to adjust the Y-axis surface difference of the concealed door handle profile, specifically including:

[0020] Remove the door handle and install it manually. Use an Allen wrench to fine-tune the three studs so that the door handle profile is 0-0.5mm lower than the door.

[0021] This invention provides a method for improving the assembly precision of concealed door handles. Targeting the structural characteristics of automobiles, it employs a local reference. During the assembly of concealed door handles, tooling control and double-headed bolt adjustment are used to link the concealed door handle to the outer door panel, avoiding the influence of assembly on the inner door panel on the position of the concealed handle. This improves the assembly precision of the concealed handle, shortens the dimensional chain, and thus increases the DTS (Device Tolerance System) pass rate of the concealed handle. Furthermore, it significantly improves the sensory quality of the concealed door handle. It has strong versatility and is applicable to similar structural vehicle models. Attached Figure Description

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described below with reference to the accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of a car door handle and its fixing point in the prior art.

[0024] Figure 2 This is a schematic diagram of the outer panel of the car door and the outer panel of the bolts in the prior art;

[0025] Figure 3 This is a schematic diagram of the inner side of the outer door panel and the inner door panel in the prior art;

[0026] Figure 4 This is a schematic diagram of the fixing of the inner panel of a car door in the prior art;

[0027] Figure 5 A flowchart illustrating an embodiment of the method for improving the assembly precision of concealed door handles provided by the present invention;

[0028] Figure 6 This is a schematic diagram of the manual installation of the door handle, the concealed handle, and the door, representing an embodiment of the method for improving the assembly accuracy of concealed door handles provided by the present invention.

[0029] Figure 7 A schematic diagram illustrating the adjustment of the double-ended stud in the X, Y, and Z directions in an embodiment of the method for improving the assembly accuracy of concealed door handles provided by the present invention.

[0030] Figure 8 A schematic diagram of the tooling handle, tooling contour surface, and plug block of an embodiment of the method for improving the assembly accuracy of concealed door handles provided by the present invention;

[0031] Figure 9 A schematic diagram showing the relative positional relationship of three tightening nuts in an embodiment of the method for improving the assembly accuracy of concealed door handles provided by the present invention;

[0032] Figure 10 A schematic diagram of the fine-tuning stud and the Y-axis adjustment surface difference in an embodiment of the method for improving the assembly accuracy of concealed door handles provided by the present invention;

[0033] Figure 11 This is a schematic diagram comparing the dimension chains of existing technologies and the present invention. Detailed Implementation

[0034] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0035] The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Terms such as “including” or “contains” mean that the element preceding the term encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as “above” and “below” are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0036] In this disclosure, when a specific component is described as being located between a first component and a second component, an intermediary component may or may not be present between the specific component and the first or second component. When a specific component is described as connecting to other components, the specific component may be directly connected to the other components without having an intermediary component, or it may not be directly connected to the other components but may have an intermediary component.

[0037] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0038] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0039] like Figure 1 As shown, current concealed door handles use a self-positioning and tightening method between the door handle and the door. The door handle fits against the door in the Y direction, and the assembly precision is related to the outer door panel. The fixing point is on the door handle and the outer door panel, and the handle is hidden by its protruding part. Existing solutions force tightening in the Y direction and position it on the outer door panel in the XZ direction, with the handle mounting point hidden by its protruding part. For example... Figure 2 and Figure 3 As shown, since mounting points cannot be set on the outer door panel for concealed handles, an inner door panel needs to be installed on the inside of the outer panel, and the door handle is then installed on the inner door panel. Additionally, as... Figure 4 As shown, the concealed door handle needs to be fixed to the inner door panel, and its outer surface needs to match the outer surface of the door. This results in a high gap / surface difference, with low tolerance and a low assembly pass rate. The Z-axis dimensional chain calculation for the concealed door handle using existing assembly methods is shown in Table 1.

[0040] Table 1 shows the calculation results of the Z-axis dimensional chain of the concealed door handle obtained using existing assembly methods.

[0041]

[0042]

[0043] like Figure 5 As shown, the method for improving the assembly precision of concealed door handles provided in this embodiment includes the following steps in actual implementation:

[0044] Step S1, Door handle profile: Use the concealed door handle profile and concealed door handle edge as assembly reference.

[0045] Step S2: Secure the concealed door handle from the inside of the door using a double-ended stud, wherein the double-ended stud is adjustable in the X, Y and Z directions.

[0046] In one embodiment of the method for improving the assembly accuracy of concealed door handles according to the present invention, step S2 may specifically include:

[0047] Step S21: Insert the hidden door handle from the inside of the door.

[0048] Step S22: Secure the concealed door handle from the inside of the door using a double-ended stud.

[0049] Step S3: Loosen the X and Z directions of the double-ended stud by tightening the nut.

[0050] like Figure 7 As shown, after loosening the X and Z directions of the double-ended stud by tightening the nut, the X and Z directions of the double-ended stud are movable.

[0051] Step S4: Insert the door handle manual fitting into the gap between the concealed door handle and the door, wherein the door handle manual fitting has a through hole that matches the shape of the concealed door handle so that the concealed door handle can be embedded in the door handle manual fitting.

[0052] Specifically, such as Figure 8 As shown, the door handle assembly is inserted from the outside of the car door using a tool handle, ensuring that the contoured surface of the assembly conforms to the door. The tool handle is perpendicular to the working surface of the assembly. The tool handle facilitates the insertion and removal of the door handle assembly. For the operation and use of the concealed door handle, see [link to documentation]. Figure 6 The shape of the hand-mounted door handle matches the shape of the concealed door handle, so that the concealed door handle can be embedded in the hand-mounted door handle, and the contoured surface of the hand-mounted door handle fits the door.

[0053] Step S5: After securing the concealed door handle in the X and Z directions, tighten it in the Y direction.

[0054] Specifically, after the concealed handle outline is embedded into the door handle by hand, such as... Figure 8As shown, three tightening nuts are fixed in the X and Z directions respectively by plugs, and then the three tightening nuts on the concealed door handle are tightened in the Y direction to fix the inner door panel and the door handle. The plugs are matched to the dimensions of the door handle assembly and the tightening nuts, and the tooling clearance can be controlled by the plugs. For example... Figure 9 As shown, the lines connecting the three tightening nuts form a triangular distribution. It should be noted that this invention does not specifically limit the distribution of the tightening nuts. In specific implementations, such as... Figure 7 As shown, tighten the three tightening nuts in the Y direction until the tightening nuts are in contact with the sheet metal.

[0055] Step S6: Remove the manual door handle assembly and fine-tune the double-ended studs to adjust the Y-axis surface difference of the concealed door handle profile.

[0056] Specifically, such as Figure 10 As shown, the door handle is removed manually, and the three studs are finely adjusted using an Allen wrench so that the door handle profile is 0-0.5mm lower than the door panel. In practice, the door handle is removed manually using a tool handle.

[0057] The calculation results of the Z-axis dimensional chain of the concealed door handle obtained by the assembly method of the present invention are shown in Table 2. The comparison of the front and back of the dimensional chain is as follows. Figure 11 As shown, the dimensional chain links are reduced from 7 to 3, significantly reducing the door handle clearance tolerance and increasing the assembly pass rate by 27%. Furthermore, after applying the assembly method of this invention to a certain vehicle model, the door handle adopts a local reference, and the actual local DTS is improved by 15%-27%, which can significantly improve the sensory quality of the hidden door handle.

[0058] Table 2 shows the calculation results of the Z-axis dimensional chain of the concealed door handle obtained using the assembly method of the present invention.

[0059]

[0060]

[0061] The method for improving the assembly accuracy of concealed door handles provided in this invention, tailored to the structural characteristics of automobiles, adopts a local reference. During the assembly of concealed door handles, tooling control and double-headed bolt adjustment are used to associate the concealed door handle with the outer door panel, avoiding the influence of the assembly on the inner door panel on the position of the concealed handle. This improves the assembly accuracy of the concealed handle, shortens the dimensional chain, and thus improves the DTS (Distributed Tolerance System) pass rate of the concealed handle. It also significantly improves the sensory quality of the concealed door handle. It has strong versatility and is applicable to similar structural vehicle models.

[0062] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0063] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A method for improving the assembly precision of concealed car door handles, characterized in that, Includes the following steps: The door handle profile and the hidden door handle edge are used as the assembly reference. A concealed door handle is fixed from the inside of the door using a double-ended stud, wherein the double-ended stud is adjustable in the X, Y and Z directions; Loosen the double-ended stud in the X and Z directions by tightening the nut; The door handle assembly is inserted into the gap between the concealed door handle and the door. The assembly is then inserted from the outside of the door using a tool handle, so that the contoured surface of the assembly fits the door. The tool handle is perpendicular to the working surface of the assembly. The assembly has a through hole that matches the shape of the concealed door handle, allowing the concealed door handle to be embedded in the assembly. After fixing the concealed door handle in the X and Z directions, tighten it in the Y direction; Remove the door handle by hand and fine-tune the double-ended studs to adjust the Y-axis surface difference of the concealed door handle profile.

2. The method for improving the assembly precision of concealed door handles according to claim 1, characterized in that, The method of using double-ended studs to fix the concealed door handle from the inside of the door specifically includes: The hidden door handle is installed from the inside of the car door; The concealed door handle is fixed from the inside of the car door using double-ended studs.

3. The method for improving the assembly precision of concealed door handles according to claim 1, characterized in that, The fixed, concealed door handle is tightened in the X and Z directions, and then in the Y direction, specifically including: After the concealed handle contour is embedded into the door handle by hand, the three tightening nuts are fixed in the X and Z directions by plugs respectively. Then, the three tightening nuts on the concealed door handle are tightened in the Y direction to fix the inner door panel and the door handle. The plugs are matched with the dimensions of the door handle and the tightening nuts.

4. The method for improving the assembly precision of concealed door handles according to claim 1, characterized in that, The manual removal and reinstallation of the door handle, along with fine-tuning of the double-ended studs to adjust the Y-axis surface difference of the concealed door handle, specifically includes: Remove the door handle and install it manually. Use an Allen wrench to fine-tune the three studs so that the door handle profile is 0-0.5mm lower than the door.

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