Tolerance adjuster

Abstract

To provide a tolerance adjuster.SOLUTION: The present disclosure provides a tolerance adjuster including a housing, a fastener and a centering structure. The housing is a vertically penetrating cylindrical body and includes an inlet and an outlet that are opposite to each other, and the housing defines a channel. The fastener is arranged partially in the channel. The centering structure is cooperatively connected to the fastener and the housing such that the fastener is movable forward and backward in an axial direction in the channel, and the fastener is kept substantially on a central axis of the housing. A hidden vehicle door handle can be mounted to an interior sheet metal of a vehicle door after the hidden vehicle door handle is aligned with an exterior sheet metal of the vehicle door, such that the hidden vehicle door handle can be mounted easily and reliably. The centering structure is cooperatively connected to the fastener to prevent the centering structure from being disengaged from the fastener after radial movement of the fastener, such that the centering structure does not need to be reassembled.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to tolerance adjustment devices, and more particularly to tolerance adjustment devices for concealed vehicle door handles. [Background technology]

[0002] With the development of society and the improvement of people's living standards, electric vehicles have become an indispensable means of transportation for people's daily transportation, and hidden door handles are a product that characterizes the intelligence of electric vehicles.

[0003] To improve the appearance of a vehicle, a hidden vehicle door handle needs to be flush with the outer sheet metal on the outside of the vehicle door. When in operation, the outer portion of the hidden vehicle door handle penetrates the outer sheet metal, and then the base of the hidden vehicle door handle is fastened to the inner sheet metal on the inside of the vehicle door. The inner sheet metal is usually welded to the inside of the vehicle door. Because it is difficult to ensure the accuracy of the installation dimensions of the inner sheet metal on the inside of the vehicle door during the welding process, there may be a gap between the hidden vehicle door handle fixed to the inner sheet metal and the outer sheet metal. Currently, the common solution to making the hidden vehicle door handle flush with the outer sheet metal is to use a tolerance adjustment device to adjust the installation dimensional error caused by welding the inner sheet metal so that the hidden vehicle door handle is flush with the outer sheet metal of the vehicle door. If a tolerance adjustment device is not used, the gap between the hidden vehicle door handle and the outer sheet metal must be checked repeatedly during installation, which is a significant waste of installation time.

[0004] The tolerance adjustment device includes a housing and a fastening portion attached (mounted) within the housing, the housing being attached to the base of the hidden vehicle door handle and extending from the base toward the inner sheet metal of the inside of the vehicle door a certain distance, and the fastening portion extending from the inside of the housing toward the inner sheet metal so as to be attached to the inner sheet metal. When the housing is attached to the base of the hidden vehicle door handle and the fastening portion is attached to the inner sheet metal, the housing abuts against the inner sheet metal. That is, the tolerance adjustment device is connected between the inner sheet metal and the base of the hidden vehicle door handle, and the distance that the housing of the tolerance adjustment device extends from the base toward the inner sheet metal of the inside of the vehicle door is used to adjust the clearance difference between the hidden vehicle door handle and the outer sheet metal so that the hidden vehicle door handle is flush with the outer sheet metal. Summary of the Invention

[0005] The present disclosure provides a tolerance adjustment device for easily and securely attaching a concealed vehicle door handle to the interior sheet metal on the inside of a vehicle door so that the concealed vehicle door handle is flush with the exterior sheet metal.

[0006] According to one aspect of the present disclosure, there is provided a tolerance adjustment device including a housing, a fastener, and a centering structure. The housing is a longitudinally extending cylinder having an inlet and an outlet opposed to each other, the housing defining a channel. The fastener is partially disposed within the channel. The centering structure is cooperatively connected to the fastener and the housing such that the fastener is axially movable back and forth within the channel and the fastener is held substantially on a central axis of the housing.

[0007] According to one aspect of the present disclosure, a centering structure includes a first engagement portion, a second engagement portion, and a plurality of ribs. The first engagement portion is configured to removably engage with a housing. The second engagement portion is configured to engage with a fastener. The plurality of ribs extend between the first engagement portion and the second engagement portion and are circumferentially spaced apart from one another.

[0008] According to one aspect of the present disclosure, the plurality of ribs extend spirally between the first engagement portion and the second engagement portion.

[0009] According to one aspect of the present disclosure, the plurality of ribs are resilient elements configured to be deformable such that the fastener can move axially back and forth within the channel while retaining the fastener substantially on the central axis of the housing.

[0010] According to one aspect of the present disclosure, the plurality of ribs are arranged symmetrically in the circumferential direction.

[0011] According to one aspect of the present disclosure, the first and second engaging portions of the centering structure are coaxially disposed with the housing.

[0012] According to one aspect of the present disclosure, the size of the first engagement portion is equal to or greater than the size of the second engagement portion.

[0013] According to one aspect of the disclosure, a fastener includes a head, a flange, and a fastening portion. The head and fastening portion are axially connected, and the flange is disposed at a junction of the head and fastening portion and extends radially. The centering structure and fastener are configured such that a second engagement portion of the centering structure engages with the head of the fastener to prevent radial movement of the head relative to the second engagement portion. The centering structure and fastener are also configured such that a resilient element of the centering structure is compressed such that the second engagement portion of the centering structure abuts against the flange of the fastener to prevent axial removal of the fastener from the housing.

[0014] According to one aspect of the present disclosure, the head of the fastener is cylindrical and the second engaging portion of the centering structure is an annular cylinder that covers a portion of the head to prevent the second engaging portion from disengaging from the head.

[0015] According to one aspect of the present disclosure, a first engaging portion of the centering structure is attached to the inlet of the housing, a head and flange of the fastener are disposed inside the housing, and a fastening portion of the fastener extends from the outlet of the housing to the exterior of the housing.

[0016] According to one aspect of the present disclosure, the tolerance adjustment device further comprises a support member attached to the outlet of the housing and configured to support the fastener.

[0017] According to one aspect of the present disclosure, the support member includes an opening aligned with the outlet of the housing. The inner diameters of the opening and the outlet are larger than the outer diameter of the fastening portion of the fastener to allow the fastener to move radially. A flange of the fastener is disposed on the support member. The fastening portion of the fastener extends from the opening to the exterior of the housing.

[0018] According to one aspect of the present disclosure, the tolerance adjustment device is configured to mount the outer wall of the housing to a base of the concealed vehicle door handle at a predetermined axial position of the concealed vehicle door handle, and the fastener is fastened to an inner vehicle panel to mount the concealed vehicle door handle to the inner vehicle panel.

[0019] The accompanying drawings are not drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in different figures is designated by the same reference numeral. For clarity, not every component is labeled in every figure. [Brief explanation of the drawings]

[0020] [Figure 1A] 1 is a structural schematic diagram of a tolerance adjustment device used to attach a concealed vehicle door handle of a vehicle to a panel of the vehicle according to the present disclosure; FIG. [Figure 1B] FIG. 1B is a front view of FIG. 1A. [Figure 1C] FIG. 1B is an exploded view of FIG. 1A. [Figure 2] FIG. [Figure 3]FIG. 2 is a cross-sectional view of the tolerance adjustment device in an assembled state. [Figure 4A] 1 is a schematic cross-sectional view of a panel-mounted concealed vehicle door handle according to one embodiment of the present disclosure. [Figure 4B] 1 is a schematic cross-sectional view of a panel-mounted concealed vehicle door handle according to a further embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0021] Various specific embodiments of the present disclosure will now be described with reference to the drawings, which form a part of this description. In this disclosure, terms indicating directions such as "front," "rear," "upper," "lower," "left," "right," "top," and "bottom" are used to describe structural parts and elements in various examples of the present disclosure. However, it should be understood that these terms are used herein for ease of illustration only and are determined based on exemplary orientations as shown in the accompanying drawings. Because the arrangements in the embodiments disclosed in this disclosure can be in various directions, these directional terms are merely exemplary and should not be considered limiting.

[0022] As used in this disclosure, ordinal numbers such as "first" and "second" are used merely for purposes of distinction and identification and have no other meaning. Unless otherwise specified, the ordinal numbers do not imply any particular order or relationship.

[0023] Fig. 1A is a structural schematic diagram of a tolerance adjustment device used to attach a hidden vehicle door handle of a vehicle to a vehicle panel according to the present disclosure, and is a diagram for explaining the positional relationship and cooperation relationship between the tolerance adjustment device and the hidden vehicle door handle and panel of the vehicle. Fig. 1B is a front view of Fig. 1A, and Fig. 1C is an exploded view of Fig. 1A.

[0024] 1A-1C, a base 101 of a vehicle's concealed vehicle door handle is attached to a vehicle panel 102 by a tolerance adjustment device 100. In one embodiment, the panel 102 is the vehicle's interior sheet metal. These figures show a portion of the vehicle's concealed vehicle door handle base 101 and a portion of the vehicle's interior sheet metal 102.

[0025] The tolerance adjustment device 100 includes a housing 204 and a fastener 202. The base 101 of the vehicle concealed vehicle door handle includes a body plate 112 having a flange 111 and an opening 113 therethrough. The flange 111 extends upwardly from the body plate 112 circumferentially about the opening 113. The flange 111 is annular. The opening 113 extends through the flange 111. In one embodiment, the base 101 is integrally formed. In other embodiments, the base 101 includes other suitable structures.

[0026] The tolerance adjustment device 100 is attached to the base 101 of the vehicle's concealed vehicle door handle via a housing 204. In one embodiment, the housing 204 of the tolerance adjustment device 100 has external threads on the outside, and the opening 113 and flange 111 of the concealed vehicle door handle base 101 have internal threads on the inside that align with the external threads on the housing 204. The external and internal threads allow the tolerance adjustment device 100 to be screwed onto the concealed vehicle door handle base 101.

[0027] The housing 204 of the tolerance adjustment device 100 is a vertically penetrating cylinder with an inlet 243 and an outlet 244 facing each other. The fastener 202 extends from the outlet 244 to the outside of the housing 204. The panel 102 includes a body plate 121 having a flange 123 and an opening 122 extending therethrough. The flange 123 extends downward from the body plate 121 in the circumferential direction of the opening 122. The flange 123 is annular. The opening 122 extends therethrough. In one embodiment, the panel 102 is integrally formed.

[0028] The fastener 202 extending out of the housing 204 is configured to be fastened into the panel 102. In one embodiment, the fastener 202 is a screw with external threads. The opening 122 and the inside of the flange 123 of the panel 102 are provided with internal threads that align with the external threads of the fastener 202. The external and internal threads allow the fastener 202 of the tolerance adjustment device 100 to be threaded into the panel 102. In one embodiment, a tool (not shown) passes through the entrance 243 of the housing 204 and engages the head 221 of the fastener 202 (see FIG. 2 ). Once the fastener 202 is aligned or nearly aligned with the opening 122 of the panel 102, the tool is turned to tighten the fastener 202 of the tolerance adjustment device 100 into the opening 122 of the panel 102. When the bottom surface of the housing 204 of the tolerance adjustment device 100 contacts the top surface of the body plate 121 of the panel 102, the tolerance adjustment device 100 is secured in place on the panel 102.

[0029] The tolerance adjusting device 100 is attached to the base 101 of the concealed vehicle door handle via its housing 204, and the tolerance adjusting device 100 is attached to the panel 102 via its fasteners 202, so that the tolerance adjusting device 100 can install the concealed vehicle door handle base 101 to the panel 102. The tolerance adjusting device 100 can be attached to the body plate 112 of the base 101 of the concealed vehicle door handle at a predetermined position (e.g., a predetermined longitudinal position) of its housing 204, and the tolerance adjusting device 100 engages with the top surface of the body plate 121 of the panel 102 via the bottom surface of its housing 204, so that by adjusting the predetermined position, the distance between the body plate 112 of the base 101 of the concealed vehicle door handle and the body plate 121 of the panel 102 can be adjusted accordingly, thereby adjusting the distance between the concealed vehicle door handle and the panel 102 (e.g., the inner sheet metal of the vehicle). A concealed vehicle door handle typically needs to be aligned with the vehicle's exterior sheet metal to ensure the aesthetic appeal of the vehicle. Therefore, by appropriately adjusting the distance between the concealed vehicle door handle (e.g., its base) and the vehicle's interior sheet metal (e.g., panel 102), the concealed vehicle door handle can be easily aligned with the vehicle's exterior sheet metal.

[0030] According to the present disclosure, the tolerance adjustment device 100 further includes a centering structure 201 (see FIG. 2 ) such that the fastener 202 of the tolerance adjustment device 100 is movable axially back and forth within the housing 204 and the fastener 202 is held substantially on the central axis of the housing 204. According to the present disclosure, the term "substantially" is added to account for the fact that achieving a perfectly error-free position on the central axis may be difficult in practice. The term "substantially on the central axis" actually means "on the central axis." According to the present disclosure, the tolerance adjustment device 100 allows for easy installation of a concealed vehicle door handle, as will be described in detail below.

[0031] FIG. 2 is an exploded view of the tolerance adjustment device 100, and FIG. 3 is a cross-sectional view of the tolerance adjustment device 100 in an assembled state, illustrating the various components of the tolerance adjustment device 100 and the positional and cooperative relationships between these components.

[0032] 2 and 3, the tolerance adjustment apparatus 100 includes a centering structure 201, a fastener 202, a support member 203, and a housing 204. The housing 204 is a longitudinally penetrating cylinder having an inlet 243 and an outlet 244 opposed to each other. A channel 245 is formed in the housing 204. The fastener 202 is partially disposed within the channel 245 of the housing 204. The centering structure 201 is configured to be cooperatively connected to the fastener 202 and the housing 204 such that the fastener 202 is axially movable back and forth within the channel 245 of the housing 204 and the fastener 202 is held substantially on the central axis of the housing 204.

[0033] The centering structure 201 includes a first engagement portion 211, a second engagement portion 212, and a plurality of ribs 213. The plurality of ribs 213 extend between the first engagement portion 211 and the second engagement portion 212 and are circumferentially spaced apart from one another. More specifically, the plurality of ribs 213 extend helically between the first engagement portion 211 and the second engagement portion 212. The plurality of ribs 213 are elastic elements configured to be deformable such that the fastener 202 can move axially back and forth within the channel 245 and the fastener 202 is held substantially on the central axis of the housing 204. The plurality of ribs 213 are arranged symmetrically in the circumferential direction.

[0034] First engagement portion 211 of centering structure 201 is configured to removably engage housing 204. First engagement portion 211 is attached to entrance 243 of housing 204. First engagement portion 211 includes protrusion 214. Housing 204 includes opening 241. Opening 241 is adjacent to entrance 243 of housing 204. Protrusion 214 of first engagement portion 211 of centering structure 201 is configured to removably fit into opening 241 of housing 204 such that first engagement portion 211 of centering structure 201 removably engages housing 204. FIG. 2 shows two protrusions 214 and two openings 241. In other embodiments, first engagement portion 211 includes other suitable numbers of protrusions 214 and housing 204 includes other suitable numbers of openings 241. The first engagement portion 211 includes any other suitable structure that releasably engages with the housing 204 .

[0035] The second engagement portion 212 of the centering structure 201 is configured to engage with the fastener 202. The fastener 202 includes a head 221, a flange 222, and a fastening portion 223. The head 221 and the fastening portion 223 are axially connected, and the flange 222 is disposed at a junction between the head 221 and the fastening portion 223 and extends radially. The second engagement portion 212 of the centering structure 201 engages with the head 221 of the fastener 202 to prevent the head 221 from moving radially relative to the second engagement portion 212. As shown in FIG. 3 , when the fastener 202 is installed in the tolerance adjustment apparatus 100, the head 221 and flange 222 of the fastener 202 are disposed inside the housing 204. The fastening portion 223 of the fastener 202 extends from the outlet 244 to the outside of the housing 204 so as to be fastened into the panel 102 (see FIGS. 1A-1C ).

[0036] The support member 203 is attached to the outlet 244 of the housing 204. The support member 203 is configured to support the fastener 202. The support member 203 includes a body portion 231 and a flange 232 extending axially from the body portion 231. The body portion 231 is annular. The body portion 231 and the flange 232 form a through opening 233. The bottom of the housing 204 is also provided with a flange 246, which extends radially toward the center of the housing 204 to form an opening, i.e., the outlet 244 of the housing 204. The body portion 231 of the support member 203 is configured to be disposed on the flange 246 of the housing 204, and the flange 232 of the support member 203 is inserted into the opening (i.e., the outlet 244) defined by the flange 246 of the housing 204. In one embodiment, the outer diameter of body portion 231 of support member 203 is approximately the same as the inner diameter of housing 204, preventing support member 203 from moving radially within housing 204. In one embodiment, the outer diameter of flange 232 of support member 203 is approximately the same as the inner diameter of outlet 244 of housing 204, preventing support member 203 from moving radially within housing 204. Opening 233 of support member 203 is aligned with outlet 244 of housing 204, with opening 233 located substantially on the central axis of outlet 244.

[0037] A flange 222 of fastener 202 is disposed on support member 203, and a fastening portion 223 of fastener 202 extends from an opening 233 in support member 203 to the outside of housing 204. An inner diameter of opening 233 in support member 203 is larger than an outer diameter of fastening portion 223 of fastener 202, and an outer diameter of flange 222 of fastener 202 is smaller than an inner diameter of housing 204 such that fastener 202 is radially movable within housing 204.

[0038] 3 , in the assembled state, protrusion 214 of first engagement portion 211 of centering structure 201 fits into opening 241 of housing 204. Multiple ribs 213 of centering structure 201 are configured to compress second engagement portion 212 of centering structure 201 against flange 222 of fastener 202, preventing fastener 202 from axially disengaging from housing 204. Second engagement portion 212 of centering structure 201 engages head 221 of fastener 202 such that second engagement portion 212 of centering structure 201 does not disengage from head 221 of fastener 202 as fastener 202 moves radially within housing 204, thereby eliminating the need to reinstall centering structure 201. The head 221 of the fastener 202 is cylindrical, and the second engaging portion 212 of the centering structure 201 is an annular cylinder, and the second engaging portion 212 covers a portion of the head 221 to prevent the second engaging portion 212 from disengaging from the head 221.

[0039] The first engagement portion 211 and the second engagement portion 212 of the centering structure 201 are disposed coaxially with the housing 204. The size of the first engagement portion 211 is equal to or greater than the size of the second engagement portion 212. In one embodiment, the first engagement portion 211 and the second engagement portion 212 are concentric rings. In a natural state (i.e., when no external force is applied), the second engagement portion 212 engages with the fastener 202 such that the fastener 202 is held substantially on the central axis of the housing 204. The fastener 202 is movable radially and axially within the housing 204 when the fastener 202 is subjected to an external force.

[0040] 4A is a schematic cross-sectional view of a concealed vehicle door handle mounted to a panel 102 according to one embodiment of the present disclosure, and FIG. 4B is a schematic cross-sectional view of a concealed vehicle door handle mounted to a panel 102 according to a further embodiment of the present disclosure. The outer wall of the housing 204 of the tolerance adjustment device 100 is attached to the base 101 of the concealed vehicle door handle at a predetermined axial position of the concealed vehicle door handle. The fasteners 202 of the tolerance adjustment device 100 are fastened into the vehicle interior panel such that the concealed vehicle door handle is attached to the panel 102 of the vehicle.

[0041] 4A and 4B , a panel 102 (e.g., the inner sheet metal of a vehicle door) is fixed vertically to the vehicle, the tolerance adjustment device 100 is attached (vertically oriented) to the base 101 of a hidden vehicle door handle, and the hidden vehicle door handle is positioned to align with the outer sheet metal of the vehicle. The centering structure 201 holds the fastener 202 of the tolerance adjustment device 100 substantially on the central axis of the housing 204 so that the fastener 202 can be easily inserted into the opening 122 of the panel 102 when the tolerance adjustment device 100 is not aligned with the opening 122 of the panel 102, thereby allowing the fastener 202 to be fastened within the panel 102. The centering structure 201 can reduce the offset between the tolerance adjustment device 100 and the panel 102, allowing the tolerance adjustment device 100 to be easily attached to the panel 102.

[0042] The centering structure 201 is configured so that the fastener 202 of the tolerance adjustment device 100 can move axially back and forth within the housing 204. During installation, the fastener 202 of the tolerance adjustment device 100 is substantially pressed into the housing 204 so that the bottom surface of the housing 204 of the tolerance adjustment device 100 abuts against the surface of the panel 102 and the hidden vehicle door handle on the tolerance adjustment device 100 is aligned with, for example, the vehicle's exterior sheet metal. At this time, the tolerance adjustment device 100 is fastened into the panel 102 to complete installation of the hidden vehicle door handle. Therefore, according to the present disclosure, the hidden vehicle door handle can be attached to the panel 102 after being aligned with the vehicle's exterior sheet metal, allowing for easy and reliable installation of the hidden vehicle door handle.

[0043] When the tolerance adjustment device 100 is slightly misaligned with the panel 102, for example, when the tip of the fastener 202 of the tolerance adjustment device 100 is aligned with the edge of the opening 122 of the panel 102, the multiple ribs 213 of the centering structure 201 can force the fastener 202 into the opening 122 of the panel 102. That is, the fastener 202 is displaced axially, and at this time, the fastener 202 of the tolerance adjustment device 100 can be tightened into the opening 122 of the panel 102 by using a tool.

[0044] 4A , in the process of fastening fastener 202, fastener 202 is moved radially within housing 204 (i.e., radially offset relative to the central axis of housing 204) to align with opening 122 in panel 102, thereby fastening fastener 202 within opening 122 in panel 102. Second engaging portion 212 of centering structure 201 is still engaged with (and not disengaged from) head 221 of fastener 202 after fastener 202 is moved radially, eliminating the need to reassemble centering structure 201.

[0045] FIG. 4B shows a partially installed state in which the tolerance adjustment device 100 is aligned with the panel 102, e.g., the fastener 202 of the tolerance adjustment device 100 is positioned substantially on the central axis of the panel 102, with the fastener 202 fastened within the opening 122 of the panel 102.

[0046] While the present disclosure has been described in terms of the example embodiments outlined above, various alternatives, modifications, variations, improvements, and / or substantial equivalents that are known, currently existing, or anticipated in the near future may be apparent to at least those skilled in the art. In addition, the technical effects and / or technical problems described in this description are exemplary rather than limiting. Thus, the disclosure of the present description can be used to solve other technical problems, may have other technical effects, and / or may solve other technical problems. Thus, the example embodiments of the present disclosure set forth above are intended to be exemplary rather than limiting. Various changes can be made without departing from the spirit or scope of the present disclosure. Thus, the present disclosure is intended to embrace all known or previously developed alternatives, modifications, variations, improvements, and / or basic equivalents.

Claims

1. A tolerance adjustment device, a housing, the housing being a through cylinder with an inlet and an outlet opposed to each other, forming a channel; a fastener partially disposed within the channel; a centering structure cooperatively connected to the fastener and the housing such that the fastener is movable axially back and forth within the channel and such that the fastener is retained substantially on a central axis of the housing; and A tolerance adjustment device comprising:

2. The centering structure comprises: a first engagement portion configured to removably engage the housing; a second engagement portion configured to engage the fastener; and a plurality of ribs extending between the first engagement portion and the second engagement portion and spaced circumferentially from one another; The tolerance adjustment device of claim 1 , comprising:

3. The tolerance adjustment device of claim 2 , wherein the plurality of ribs extend spirally between the first engagement portion and the second engagement portion.

4. 3. The tolerance adjustment device of claim 2, wherein the plurality of ribs are elastic elements configured to be deformable so that the fastener can move axially back and forth within the channel and so that the fastener is retained substantially on the central axis of the housing.

5. The tolerance adjusting device according to claim 2 , wherein the plurality of ribs are arranged symmetrically in the circumferential direction.

6. The tolerance adjustment device of claim 2 , wherein the first engaging portion and the second engaging portion of the centering structure are coaxially disposed with the housing.

7. The tolerance adjustment device according to claim 6 , wherein the size of the first engagement portion is equal to or greater than the size of the second engagement portion.

8. The fastener comprises a head, a flange, and a fastening portion, the head and the fastening portion being axially connected, the flange being disposed at a joining position between the head and the fastening portion and extending radially, The centering structure and the fastener are the second engagement portion of the centering structure engages the head of the fastener to prevent the head from moving in the radial direction relative to the second engagement portion; and the resilient element of the centering structure is compressed so that the second engaging portion of the centering structure abuts the flange of the fastener to prevent axial removal of the fastener from the housing; 5. The tolerance adjustment device according to claim 4, wherein the tolerance adjustment device is configured as follows:

9. 9. The tolerance adjustment device of claim 8, wherein the head of the fastener is cylindrical and the second engaging portion of the centering structure is an annular cylinder, the second engaging portion covering a portion of the head to prevent the second engaging portion from disengaging from the head.

10. the first engagement portion of the centering structure is attached to the inlet; the head and flange of the fastener are disposed inside the housing, and the fastening portion of the fastener extends from the outlet to the exterior of the housing. The tolerance adjustment device according to claim 8.

11. Furthermore, a support member attached to the outlet of the housing, the support member configured to support the fastener; The tolerance adjustment device of claim 10, comprising:

12. the support member includes an opening aligned with the outlet, the inner diameter of the opening and the outlet being greater than an outer diameter of the fastening portion of the fastener to allow the fastener to move in the radial direction; The flange of the fastener is disposed on the support member, and the fastening portion of the fastener extends from the opening to the outside of the housing. The tolerance adjustment device according to claim 11.

13. The tolerance adjustment device is The outer wall of the housing is attached to the base of the concealed vehicle door handle at a predetermined axial position of the concealed vehicle door handle; and the fastener is fastened to the vehicle interior panel so that the concealed vehicle door handle is attached to the vehicle interior panel; The tolerance adjustment device according to claim 1 , wherein the tolerance adjustment device is configured as follows:

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