Fastening device for vehicle

Abstract

The present application relates to a fastening device for a vehicle, which may include: a first fastener fixed to a first structure; a housing fixed to a second structure and configured to allow the first fastener to be inserted into one side of the housing; a lifting unit installed in the housing so as to be movable up and down; a second fastener rotatably supported against the lifting unit, the second fastener being fastened to or separated from the first fastener in a rotational direction of the second fastener, and the second fastener moving up and down together with the lifting unit; and a locking unit configured to interfere with a working tool entering the other side of the housing and selectively allow rotation of the second fastener. Because the parts required for fastening the first structure and the second structure can be implemented as a single assembly, the fastening device for a vehicle can prevent waste of machines and manpower for additional supply work and loss of parts during assembly.

Description

Technical Field

[0001] Exemplary embodiments of the present disclosure relate to a fastening device for a vehicle, and more particularly, to a fastening device for a vehicle that allows a roof cover or a battery module to be easily mounted on or detached from a chassis frame of a private vehicle (PBV). Background Art

[0002] Generally, a purpose-built vehicle (PBV) refers to a future type of vehicle in which a user can freely use the interior space of the PBV according to his or her purpose, so that as autonomous driving technology develops, desired customized services can be provided to the user while the user moves to the destination.

[0003] This type of PBV has a structure in which a roof (that is, an upper vehicle body designed for the user's purpose) is coupled to a chassis frame in the form of a skateboard. In this structure, battery modules are extensively arranged on the underside of the PBV. Therefore, it is necessary to develop a new fastening structure that can easily replace the roof or battery modules from the chassis frame of the PBV and realize automated assembly.

[0004] The background technology of the present disclosure is disclosed in Korean Patent Application Publication No. 10-2021-0077367 (invention title: “Vehicle Body Assembly Structure”, published on June 25, 2021). Summary of the Invention

[0005] This Summary is provided to introduce some concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

[0006] Various embodiments are directed to providing a fastening device for a vehicle, wherein a roof or a battery module can be easily mounted on or detached from a chassis frame of a private vehicle (PBV).

[0007] In one embodiment, a fastening device for a vehicle includes: a first fastener fixed to a first structure; a housing fixed to a second structure and configured to allow the first fastener to be inserted into one side of the housing; a lifting unit installed in the housing in a manner that can move up and down; a second fastener rotatably supported against the lifting unit, the second fastener being fastened to or separated from the first fastener in a rotational direction of the second fastener, and the second fastener moving up and down together with the lifting unit; and a locking unit configured to interfere with a working tool entering the other side of the housing and selectively allow rotation of the second fastener.

[0008] In addition, the locking unit includes a first locking unit connected to the other side of the shell; and a second locking unit, which is connected to the second fastener in a manner that can move up and down, is fastened to the first locking unit in the moving direction of the first locking unit or is separated from the first locking unit, and is configured to selectively allow the second fastener to rotate.

[0009] In addition, the first locking unit includes: a first main body portion, arranged to face the second locking unit; an entry hole, shaped to penetrate the first main body portion and configured to provide a guide for the working tool to enter the shell; and a first locking member, configured to protrude from the first main body portion and be restricted to and connected to the second locking unit when the second locking unit is placed on the first main body portion.

[0010] Furthermore, a plurality of first locking members are provided, and the plurality of first locking members are spaced apart from each other at specific intervals in the circumferential direction of the first main body portion.

[0011] In addition, when the working tool enters the housing, the second locking unit moves upward and separates from the first locking unit. When the working tool is detached from the housing, the second locking unit moves downward and is fastened to the first locking unit.

[0012] In addition, the second locking unit includes: a second main body portion, which is provided between the lifting unit and the second fastener and is installed in a slidable manner in the length direction of the second fastener; an anti-rotation unit, which is provided in the second main body portion so that the relative rotation of the second main body portion relative to the second fastener is prevented; and a second locking member, which extends from the second main body portion and is connected to the first locking unit when the second main body portion moves downward by a specific distance or more.

[0013] In addition, the anti-rotation unit is formed to have a polygonal cross-sectional shape, and is restrained and connected to the second fastening member.

[0014] Furthermore, the second locking member includes a plurality of serrations configured to protrude from the outer peripheral surface of the second body portion in a radial direction of the second body portion.

[0015] Furthermore, the serration portion contacts the first locking unit and restricts the second fastener from rotating in a direction in which the second fastener is separated from the first fastener.

[0016] In addition, the lifting unit includes a lifting member installed in the shell and configured to allow the second fastener to be inserted into the lifting member; a guide portion extending from the lifting member and connected to the shell in a slidable manner; and a support portion extending from the lifting member and configured to rotatably support the second fastener.

[0017] In addition, the second fastening member includes: a second fastening member arranged in the lifting member and configured to have a thread provided on an inner circumferential surface of the second fastening member; a capturing portion extending from the second fastening member and rotatably connected to one side of the supporting portion; and a flange extending from the second fastening member and configured to prevent the second fastening member from moving up and down relative to the lifting unit by contacting the other side of the supporting portion.

[0018] Furthermore, the second fastening member has a polygonal cross-sectional shape.

[0019] Furthermore, the fastening device further includes a restoration member configured to restore the lifting unit to an initial position when the second fastening member is separated from the first fastening member.

[0020] Furthermore, the restoration member is installed between the housing and the lifting unit and is provided in a stretchable manner in a length direction of the restoration member.

[0021] Furthermore, both end portions of the restoration member are supported by being in contact with the housing and with the surface of the lifting unit, respectively.

[0022] Furthermore, each of both end portions of the restoration member has a semicircular cross-section.

[0023] Since parts required for fastening the first structure and the second structure can be implemented as one assembly, the fastening device for a vehicle according to the present disclosure can prevent waste of machines and manpower for additional supply work and loss of parts at the time of assembly.

[0024] Furthermore, the fastening device for a vehicle according to the present disclosure can prevent incorrect assembly because the second fastening member is rotatably and vertically movable while the second fastening member is held at its normal position relative to the first fastening member by the lifting unit.

[0025] Furthermore, when vibration occurs in the vehicle due to the locking unit, the fastening device for the vehicle according to the present disclosure can prevent the second fastener from being arbitrarily separated from the first fastener due to sliding occurring between the housing and the second fastener.

[0026] Furthermore, since fastening and separation of the first fastener and the second fastener can be repeatedly performed by the recovery member, the fastening device for a vehicle according to the present disclosure can improve efficiency and consistency of assembly.

[0027] Furthermore, since both ends of the restoration member directly make surface contact with the housing and the lifting unit, the fastening device for a vehicle according to the present disclosure may reduce the weight of a product and may be more easily assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 FIG. 1 is an installation state diagram schematically showing a state in which a fastening device for a vehicle according to one embodiment of the present disclosure has been installed.

[0029] Figure 2 is a perspective view schematically showing the structure of a fastening device for a vehicle according to one embodiment of the present disclosure.

[0030] Figure 3 is a cross-sectional view schematically illustrating a structure of a fastening device for a vehicle according to one embodiment of the present disclosure.

[0031] Figure 4 is an exploded perspective view schematically illustrating the structure of a fastening device for a vehicle according to one embodiment of the present disclosure.

[0032] Figure 5A and Figure 5B is a perspective view schematically illustrating the structure of a housing according to one embodiment of the present disclosure.

[0033] Figure 6 is a perspective view schematically illustrating the structure of a lifting unit according to one embodiment of the present disclosure.

[0034] Figure 7 is a perspective view schematically illustrating the structure of a second fastening member according to one embodiment of the present disclosure.

[0035] Figure 8 is an enlarged view schematically showing the structure of a capture portion and a flange according to one embodiment of the present disclosure.

[0036] Figure 9 is a perspective view schematically illustrating the structure of a locking unit according to one embodiment of the present disclosure.

[0037] Figure 10 is a cross-sectional perspective view schematically illustrating the structure of a locking unit according to one embodiment of the present disclosure.

[0038] Figure 11 is a perspective view schematically illustrating a structure of a first locking unit according to one embodiment of the present disclosure.

[0039] Figure 12 is a perspective view schematically illustrating a structure of a second locking unit according to one embodiment of the present disclosure.

[0040] Figure 13 is a perspective view schematically illustrating the structure of a restoration member according to one embodiment of the present disclosure.

[0041] Figures 14 to 17FIG. 1 is a diagram schematically illustrating a process of fastening a first fastening member and a second fastening member together according to an embodiment of the present disclosure.

[0042] Figure 18 and Figure 19 is a diagram schematically illustrating a process in which a first fastening member and a second fastening member are separated from each other according to one embodiment of the present disclosure. DETAILED DESCRIPTION

[0043] The following detailed description is provided to help the reader gain a comprehensive understanding of the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalent substitutions of the methods, devices, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely an example and is not limited to the examples set forth herein, but it will be apparent after understanding the disclosure of this application that the order of operations can be changed, except for operations that must occur in a certain order.

[0044] The features described herein may be embodied in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein are merely illustrative of some of the many possible ways to implement the methods, devices, and / or systems described herein, which will be apparent upon understanding the disclosure of this application.

[0045] The advantages and features of the present disclosure and the methods for achieving these advantages and features will be clear with reference to the accompanying drawings and the embodiments described in detail below. However, the present disclosure is not limited to the embodiments disclosed herein, but will be implemented in various forms. One embodiment of the present disclosure is intended to fully disclose the present disclosure and enable those of ordinary skill in the art to fully understand the scope of the present disclosure. The present disclosure will only be limited by the scope of the appended claims. At the same time, the terms used in this specification are used to explain these embodiments and are not used to limit the present disclosure.

[0046] Terms such as first, second, A, B, (a), (b), etc. may be used herein to describe components. Each of these terms is not used to define the nature, sequence, or order of the corresponding component, but is only used to distinguish the corresponding component from other components. For example, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

[0047] Throughout the specification, when a component is described as being “connected to” or “coupled to” another component, the component may be directly “connected to” or “coupled to” the other component, or one or more other components may be present therebetween. Conversely, when an element is described as being “directly connected to” or “directly coupled to” another element, no other elements may be present therebetween.

[0048] Unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms as well. It will also be understood that the terms "comprises / comprising" and / or "includes / including" when used herein specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof.

[0049] Figure 1 FIG. 1 is an installation state diagram schematically showing a state in which a fastening device for a vehicle according to one embodiment of the present disclosure has been installed. Figure 2 is a perspective view schematically showing the structure of a fastening device for a vehicle according to one embodiment of the present disclosure. Figure 3 is a cross-sectional view schematically illustrating a structure of a fastening device for a vehicle according to one embodiment of the present disclosure. Figure 4 is an exploded perspective view schematically illustrating the structure of a fastening device for a vehicle according to one embodiment of the present disclosure.

[0050] refer to Figures 1 to 4 , a fastening device 1 for a vehicle according to one embodiment of the present disclosure includes a first fastening member 100 , a housing 200 , a lifting unit 300 , a second fastening member 400 , a locking unit 500 , and a restoration component 600 .

[0051] The first structure 10 and the second structure 20 described below may be exemplified as a roof corresponding to a vehicle body (the roof can be customized and replaced according to the user's purpose) and a chassis frame mounted on the underside of the vehicle and structurally supporting the vehicle, respectively. However, the first structure 10 and the second structure 20 are not limited to the roof and the chassis frame, and may be variously modified in design according to different structures, such as the chassis frame and the battery module, which may be fastened together vertically in the vehicle or separated vertically in the vehicle.

[0052] The first fastening member 100 is fixed to the first structure 10 and fastened to a second fastening member 400 (described later), and the first fastening member 100 fixes the first structure 10 and the second structure 20 to each other.

[0053] The first fastener 100 according to one embodiment of the present disclosure includes a fixing portion 110 , an extending portion 120 , and an inlet guide portion 130 .

[0054] The fixing portion 110 forms the appearance of the top of the first fastener 100 according to one embodiment of the present disclosure and generally supports the extension portion 120 and the inlet guide portion 130 (described later). The fixing portion 110 according to one embodiment of the present disclosure is placed and fixed to the inner side of the bracket portion 11, which is connected to the first structure 10. The fixing portion 110 can be welded or bonded to the inner side of the bracket portion 11 and integrally connected to the bracket portion 11. In addition Figure 4 In addition to the circular shape shown in FIG, the detailed shape of the fixing portion 110 may be changed in design in various forms that can be seated and fixed to the inner side of the bracket portion 11.

[0055] The extension portion 120 extends from the fixing portion 110 and forms the outer appearance of the central portion of the first fastener 100. The extension portion 120 according to one embodiment of the present disclosure may be shaped as a rod extending vertically downward from the inner side of the fixing portion 110. The extension portion 120 extends downward from the bracket portion 11 through the inner side of the bracket portion 11. Threads are formed along the outer peripheral surface of the extension portion 120 in the longitudinal direction of the extension portion 120 so that the extension portion 120 can be screwed onto the second fastener 400 (described later).

[0056] The inlet guide 130 extends from the extension 120 and forms the outer appearance of the lower portion of the first fastener 100. The inlet guide 130 is configured to guide the extension 120 so that the extension 120 enters the interior of the second fastener 400 during the process of fastening the first fastener 100 and the second fastener 400 together. The inlet guide 130 according to one embodiment of the present disclosure extends vertically downward from the bottom of the extension 120. The inlet guide 130 is shaped so that the width of the inlet guide 130 decreases toward its end. Therefore, the inlet guide 130 can be shaped to have a substantially tapered shape.

[0057] The housing 200 is fixed to the second structure 20 and generally supports the lifting unit 300, the locking unit 500, and the recovery member 600 (described later). The housing 200 is arranged in such a manner that the first fastener 100 is inserted into the housing 200 on the upper side of the housing 200 so that the fastening operation of the first fastener 100 and the second fastener 400 can be performed within the housing 200, and the working tool 30 (refer to FIG. 1 ) such as a socket wrench is inserted into the housing 200. Figure 14 ) enters the housing 200 on the lower side of the housing 200.

[0058] Figure 5A and Figure 5Bis a perspective view schematically illustrating the structure of a housing according to one embodiment of the present disclosure.

[0059] refer to Figure 4 、 Figure 5A and Figure 5B According to one embodiment of the present disclosure, the interior of the housing 200 may be hollow, and the housing may be formed into a cylindrical shape with an open bottom. The length direction of the housing 200 is parallel to the length direction of the first fastener 100. The housing 200 may be supported against the second structure 20 through the intermediary of the assembly portion 201 extending from the side of the housing 200. In this case, the assembly portion 201 may be integrally connected to the second structure 20 by welding or bonding, or may be detachably connected to the second structure 20 by bolting.

[0060] An insertion hole portion 202 for inserting the first fastener 100 is formed at the top of the housing 200. The insertion hole portion 202 according to one embodiment of the present disclosure may be formed in the form of a hole that vertically penetrates the top of the housing 200 from top to bottom. The insertion hole portion 202 may be formed to have a diameter greater than that of the extension portion 120 so that the operation of inserting the first fastener 100 into the insertion hole portion 202 is smoothly performed.

[0061] A guide rail 210 may be formed within the housing 200. The guide rail 210 according to one embodiment of the present disclosure protrudes vertically from the inner circumferential surface of the housing 200 toward the internal space of the housing 200. However, the guide rail 210 is not limited to this shape, and may be formed in the form of a groove that is concavely recessed from the inner circumferential surface of the housing 200 toward the outer circumferential surface of the housing 200. The length direction of the guide rail 210 extends parallel to the length direction of the housing 200. A plurality of guide rails 210 may be provided. In this case, the plurality of guide rails 210 may be spaced apart from each other and arranged along the inner circumferential surface of the housing 200.

[0062] The lifting unit 300 is installed in the housing 200 in a manner that can move up and down. The lifting unit 300 serves as a component for arranging the second fastening member 400 to its normal position in the housing 200 and also serves as a component for guiding the movement of the second fastening member 400 during the process of fastening the first fastening member 100 and the second fastening member 400 together.

[0063] Figure 6 is a perspective view schematically illustrating the structure of a lifting unit according to one embodiment of the present disclosure.

[0064] refer to Figures 1 to 6 , the lifting unit 300 according to one embodiment of the present disclosure includes a lifting member 310 , a guide portion 320 , and a support portion 330 .

[0065] The lifting member 310 forms a schematic appearance of the lifting unit 300 and is installed in the housing 200 in a manner that can move up and down. The lifting member 310 according to one embodiment of the present disclosure is formed in the shape of a hollow cylinder with both ends open and is installed in the housing 200. The outer peripheral surface of the lifting member 310 is arranged to be spaced apart from the inner peripheral surface of the housing 200 at a certain interval, so that the lifting member 310 can move up and down smoothly in the housing 200 and provide a space in which the guide portion 320 and the recovery member 600 (described later) can be installed.

[0066] The guide portion 320 extends from the outer peripheral surface of the lifting member 310 and is slidably connected to the guide rail 210 provided on the inner peripheral surface of the housing 200. The guide portion 320 according to one embodiment of the present disclosure may be shaped in the form of a cylindrical plate that extends laterally from the outer peripheral surface of the bottom of the lifting member 310 in the radial direction of the lifting member 310.

[0067] The guide portion 320 is connected to the guide rail 210 in a slidably movable manner through the intermediary of a guide member 321 formed in the outer peripheral surface of the guide portion 320. The guide member 321 according to one embodiment of the present disclosure may be formed in the form of a groove that is concavely recessed from the outer peripheral surface of the lifting member 310 toward the central axis of the lifting member 310. The guide member 321 is formed to have a cross-section corresponding to the cross-section of the guide rail 210 protruding from the inner peripheral surface of the housing 200, and the guide member is inserted into the guide rail 210. The guide member 321 moves slidably in the longitudinal direction of the guide rail 210 and supports the lifting member 310 relative to the housing 200 in a manner that can be moved up and down. However, the guide member 321 is not limited to this form. If the guide rail 210 is concavely recessed from the inner peripheral surface of the housing 200, then the guide member 321 can be formed in the form of protruding from the outer peripheral surface of the lifting member 310. The guide members 321 may be provided in plurality, and the plurality of guide members 321 may be arranged to be spaced apart from each other at intervals along the outer circumferential surface of the lifting member 310 .

[0068] The support portion 330 extends from the inner circumferential surface of the lifting member 310 and rotatably supports the second fastener 400 (described later). The support portion 330 according to one embodiment of the present disclosure may be shaped as a ring that extends laterally from the inner circumferential surface of the top of the lifting member 310 toward the interior thereof in the radial direction of the lifting member 310. The support portion 330 is shaped to have a stepped cross-section so that the support portion 330 is restrained and connected to the capture portion 420 (described later). In other words, the bottom of the support portion 330 may extend further toward the central axis of the lifting member 310 than the top of the support portion 330 toward the central axis of the lifting member 310.

[0069] The second fastener 400 is rotatably supported against the lifting unit 300. The second fastener 400 is connected to the working tool 30, which is inserted into the lower side of the housing 200, and is rotated clockwise or counterclockwise about the central axis of the second fastener by the rotational power applied by the working tool 30. The second fastener 400 is fastened to or separated from the first fastener 100 depending on its rotational direction, and the second fastener moves up and down within the housing 200 together with the lifting unit 300. In other words, the second fastener 400 is connected to the lifting unit 300 in a manner that allows it to move up and down integrally with the lifting unit 300 and to rotate relative to the lifting unit 300.

[0070] Figure 7 is a perspective view schematically illustrating the structure of a second fastening member according to one embodiment of the present disclosure.

[0071] refer to Figures 1 to 7 , the second fastening device 400 according to one embodiment of the present disclosure includes a second fastening member 410 , a capture portion 420 and a flange 430 .

[0072] According to one embodiment of the present disclosure, the second fastening member 410 is shaped like a hollow rod and is inserted into the lifting member 310. The second fastening member 410 is shaped to have a diameter smaller than that of the lifting member 310. The outer circumferential surface of the second fastening member 410 is arranged to be spaced apart from the inner circumferential surface of the lifting member 310 by a certain distance. Therefore, the second fastening member 410 can rotate smoothly within the lifting member 310 without special intervention, and space can be provided between the second fastening member 410 and the lifting member 310 to install the second locking unit 520 (described later). The inner circumferential surface of the second fastening member 410 is provided with threads that screw onto the outer circumferential surface of the extension 120. The second fastening member 410 is shaped to have a length that allows its bottom to protrude downward from the lifting member 310. Therefore, the second fastening member 410 can improve the accessibility of the working tool 30.

[0073] The second fastening member 410 may be formed into a polygonal cross-section. For example, the cross-section of the second fastening member 410 may be hexagonal. Thus, the rotational power from the work tool 30 can be efficiently provided to the second fastening member 410, and the second locking unit 520 (described later) can be prevented from rotating relative to the second fastening member 410.

[0074] The catching portion 420 extends from the second fastening member 410 and is rotatably connected to one side of the supporting portion 330 , and supports the second fastening member 410 with respect to the elevating unit 300 in a relatively rotatable manner.

[0075] Figure 8 is an enlarged view schematically showing the structure of a capture portion and a flange according to one embodiment of the present disclosure.

[0076] refer to Figure 8 , the capture portion 420 according to one embodiment of the present disclosure is approximately The catch portion 420 is bent in a radial direction of the second fastening member 410 from the top of the second fastening member 410 toward the outside of the second fastening member 410. The lower side of the catch portion 420 is seated and supported by the upper side of the bottom of the support portion 330, so that when the second fastening member 410 rotates about its central axis, the second fastening member 410 can relatively rotate about the support portion 330.

[0077] The flange 430 extends from the second fastening member 410 and prevents the second fastening member 410 from moving up and down relative to the lifting unit 300 by contacting the other side of the support portion 330. Therefore, the second fastening member 410 can move up and down integrally with the lifting member 310 and can also be supported in a state in which the second fastening member 410 is relatively rotatable around the lifting member 310.

[0078] The flange 430 according to one embodiment of the present disclosure extends transversely from the outer peripheral surface of the second fastening member 410 to the exterior of the second fastening member 410 in the radial direction of the second fastening member 410. The flange 430 is spaced apart from the catch portion 420 at a certain interval along the length direction of the second fastening member 410 and is arranged to face the catch portion 420. When the catch portion 420 is seated in the support portion 330, the flange 430 is arranged to face the underside of the bottom of the support portion 330 and, together with the catch portion 420, surround the bottom of the support portion 330. While the catch portion 420 can rotate relative to the support portion 330 and the vertical movement of the second fastening member 410 can be limited to a predetermined range of dimensions, the spacing between the flange 430 and the catch portion 420 can be varied in various ways in design.

[0079] The locking unit 500 selectively allows the second fastener 400 to rotate by interfering with the working tool 30 entering the lower side of the housing 200. More specifically, the locking unit 500 allows the second fastener 400 to rotate while the working tool 30 enters the housing 200 and fastens the second fastener 400 to the first fastener 100 or separates the second fastener 400 from the first fastener 100. Furthermore, when the working tool 30 is removed from the housing 200 after the second fastener 400 is fully fastened to the first fastener 100, the locking unit 500 restricts the rotation of the second fastener 400. Thus, the locking unit 500 prevents the second fastener 400 from being separated from the first fastener 100 due to slippage between the housing 200 and the second fastener 400 when vibration occurs in the vehicle.

[0080] Figure 9 is a perspective view schematically illustrating the structure of a locking unit according to one embodiment of the present disclosure. Figure 10 is a cross-sectional perspective view schematically illustrating the structure of a locking unit according to one embodiment of the present disclosure.

[0081] Reference Figure 3 、 Figure 9 and Figure 10 , a locking unit 500 according to one embodiment of the present disclosure includes a first locking unit 510 and a second locking unit 520 .

[0082] The first locking unit 510 is connected to the lower side of the housing 200 and provides a guide for the working tool 30 to enter the housing 200. The first locking unit 510 selectively allows the second fastener 400 to rotate while being operated by the working tool 30 in conjunction with the lifting movement of the second locking unit 520 (described later).

[0083] Figure 11 is a perspective view schematically illustrating a structure of a first locking unit according to one embodiment of the present disclosure.

[0084] refer to Figure 11 , the first locking unit 510 according to one embodiment of the present disclosure includes a first body portion 511 , an inlet hole 512 , and a first locking member 513 .

[0085] The first main body 511 forms a schematic appearance of the first locking unit 510 and is arranged to face the second locking unit 520 (described later). The first main body 511 according to an embodiment of the present disclosure can be formed into a cylindrical shape with an open top. The open top of the first main body 511 is arranged to face the bottom of the housing 200, and the inner peripheral surface of the first main body 511 is connected to the outer peripheral surface of the housing 200. In this case, the first main body 511 can be formed integrally with the housing 200, can be manufactured separately from the housing 200, and can be connected to the housing 200 in a manner that is separable from the housing 200.

[0086] The inlet hole 512 is formed to penetrate the first main body 511 and provide a guide for the working tool 30 to enter the housing 200. The inlet hole 512 according to one embodiment of the present disclosure may be formed in the form of a hole that penetrates the bottom of the first main body 511 vertically up and down. The central axis of the inlet hole 512 is arranged to be on the same axis as the central axis of the first main body 511. The diameter of the inlet hole 512 is formed to be larger than the diameter of the working tool 30 and smaller than the diameter of each of the guide portion 320 and the second locking member 523 (described later). Therefore, the inlet hole 512 can prevent interference with the working tool 30 entering the lower side of the housing 200, and can prevent the lifting unit 300 and the second locking unit 520 installed in the housing 200 from being separated downward from the housing 200 due to their own weight.

[0087] The first locking member 513 protrudes from the first body portion 511. When the second locking unit 520 (described later) is mounted on the first body portion 511, the first locking member 513 is restrained and connected to the second locking unit 520, thereby restricting the rotation of the second fastener 400. According to one embodiment of the present disclosure, the first locking member 513 may be formed as a protrusion that protrudes vertically from the underside of the first body portion 511 toward the interior of the housing 200. One side of the first locking member 513 is integrally connected to the inner circumferential surface of the first body portion 511, and the other side of the first locking member 513 extends radially from the inner circumferential surface of the first body portion 511. The other side of the first locking member 513 is spaced apart from the central axis of the first body portion 511, providing space within which the second locking unit 520 (described later) that can be mounted on the first body portion 511 can be positioned. A plurality of first locking members 513 are provided. The plurality of first locking members 513 are arranged at intervals from one another in the circumferential direction of the first body portion 511. The number of the first locking members 513 and the intervals between the first locking members 513 are not limited to Figure 11 The number and spacing shown in FIG, and can be variously changed in design according to the size of the first main body portion 511. In addition, the cross-sectional shape of the first locking member 513 is Figure 11 In addition to the quadrilateral shown in FIG, it can be changed in design in various ways within the technical spirit of the form that can be constrained and connected to the second locking unit 520.

[0088] The second locking unit 520 is connected to the second fastener 400 in a manner that allows it to move up and down. The second locking unit 520 is moved up and down by an external force from the working tool 30 that has entered the housing 200. The second locking unit 520 is fastened to or separated from the first locking unit 510 in its moving direction and selectively allows the second fastener 400 to rotate. More specifically, when the working tool 30 enters the housing 200, the second locking unit 520 moves upward and separates from the first locking unit 510, thereby allowing the second fastener 400 to rotate. In addition, when the working tool 30 is detached from the housing 200, the second locking unit 520 moves downward by its own weight and is fastened to the first locking unit 510, allowing the second fastener 400 to rotate.

[0089] Figure 12 is a perspective view schematically illustrating a structure of a second locking unit according to one embodiment of the present disclosure.

[0090] refer to Figure 12 The second locking unit 520 according to one embodiment of the present disclosure includes a second body portion 521 , an anti-rotation unit 522 , and a second locking member 523 .

[0091] The second body portion 521 is disposed between the lifting unit 300 and the second fastening member 400 and is slidably mounted on the lengthwise direction of the second fastening member 400. The second body portion 521 according to one embodiment of the present disclosure may be formed into a hollow column with both ends open. The outer circumferential surface of the second body portion 521 and the inner circumferential surface of the second body portion 521 are arranged to face the inner circumferential surface of the lifting member 310 and the outer circumferential surface of the second fastening member 410, respectively. A friction reducing member (not shown) may be provided between the second body portion 521 and the lifting member 310, and between the second body portion 521 and the second fastening member 410, or the second body portion 521 may be formed with a tolerance having a specific size so that the second body portion 521 can slide smoothly along the lengthwise direction of the second fastening member 400.

[0092] The anti-rotation unit 522 is provided in the second main body portion 521 so that the relative rotation of the second main body portion 521 with respect to the second fastening member 400 is prevented. The anti-rotation unit 522 according to one embodiment of the present disclosure can be exemplified as an inner peripheral surface of the second main body portion 521 being provided to face the outer peripheral surface of the second fastening member 410. The anti-rotation unit 522 is formed to have a polygonal cross-sectional shape on a plane parallel to the radial direction of the second main body portion 521, and is restricted and connected to the outer peripheral surface of the second fastening member 410. The anti-rotation unit 522 prevents the second main body portion 521 from rotating relative to the second fastening member 410 around the central axis of the second fastening member 410 by a trapping force with the second fastening member 410. In addition Figure 12 The detailed cross-sectional shape of the anti-rotation unit 522 may be variously changed in design in a manner corresponding to the cross-sectional shape of the second fastening member 410 , other than the hexagonal shape shown in FIG.

[0093] The second locking member 523 extends from the second body portion 521 and is restricted and connected to the first locking unit 510 when the second body portion 521 moves downward a specific distance or more. More specifically, after the working tool 30 is removed from the housing 200, when the second body portion 521 moves downward a specific distance or more by its own weight, the second locking member 523 is seated on the first body portion 511 and is restricted and connected to the first locking member 513, thereby restricting the rotation of the second fastener 400.

[0094] The second locking member 523 according to one embodiment of the present disclosure includes a serration portion 523 a.

[0095] The serrations 523a protrude from the outer peripheral surface of the second main body portion 521 in the radial direction of the second main body portion 521. One side of the serrations 523a is formed in the form of a step parallel to the radial direction of the second main body portion 521, and the other side of the serrations 523a is formed in the form of an inclined surface arranged at a given angle to the radial direction of the second main body portion 521. When the second locking member 523 is placed on the first main body portion 511, the stepped side surface of the serrations 523a contacts one side of the first locking member 513 of the first locking unit 510, and the serrations 523a restrict the second fastener 400 from rotating in the direction in which the second fastener 400 is separated from the first fastener 100. For example, Figure 10The serrations 523a are shown with one side contacting the right side of the first locking member 513. However, depending on the direction of the threads formed in the second fastener 400 and the first fastener 100, one side of the serrations 523a may contact the left side of the first locking member 513. A plurality of serrations 523a are provided. The plurality of serrations 523a are arranged spaced apart from one another at regular intervals in the circumferential direction of the second body portion 521. The number of serrations 523a and the intervals between the serrations 523a may be varied in design depending on the number of first locking members 513 and the intervals between the first locking members 513.

[0096] When the second fastener 400 is separated from the first fastener 100, the restoration component 600 restores the lifting unit 300 to its initial position. In this case, the initial position of the lifting unit 300 may refer to a state in which the lifting unit 300 has descended to its maximum position within the housing 200 and the bottom of the guide member 320 has been seated on the top of the first locking member 513. Therefore, when the first fastener 100 and the second fastener 400 are repeatedly fastened together, the restoration component 600 can ensure consistent assembly performance.

[0097] Figure 13 is a perspective view schematically illustrating the structure of a restoration member according to one embodiment of the present disclosure.

[0098] refer to Figure 3 and Figure 13 The restoration member 600 according to one embodiment of the present disclosure is installed between the housing 200 and the lifting unit 300. The restoration member 600 is shaped in the form of a coil spring arranged to be stretchable in its longitudinal direction, and elastically supports the lifting unit 300 relative to the housing 200. The longitudinal direction of the restoration member 600 is arranged parallel to the longitudinal direction of the housing 200. When the lifting unit 300 is arranged at its initial position, the restoration member 600 can be installed in a neutral state so that no elastic force is generated in the longitudinal direction of the restoration member 600.

[0099] The two ends of the restoration member 600 are supported by making surface contact with the housing 200 and the lifting unit 300, respectively. More specifically, the two ends of the restoration member 600 are shaped into a semicircular cross-section. The two ends of the restoration member 600 make surface contact with the underside of the top of the housing 200 and the top of the guide member 320, respectively. Therefore, even without a separate supporting mechanism, the restoration member 600 can stably maintain an upright position between the housing 200 and the lifting unit 300 without any significant movement.

[0100] Hereinafter, the operation of the fastening device 1 for a vehicle according to one embodiment of the present disclosure is described in detail.

[0101] Figures 14 to 17 FIG. 1 is a diagram schematically illustrating a process of fastening a first fastening member and a second fastening member together according to an embodiment of the present disclosure.

[0102] refer to Figures 14 to 17 When the first structure 10 is placed on the second structure 20 , the first fastener 100 fixed to the first structure 10 is inserted into the housing 200 through the insertion hole portion 202 .

[0103] Thereafter, the working tool 30 enters the housing 200 through the entrance hole 512 provided in the first locking unit 510 and is connected to the bottom of the second fastening member 410 .

[0104] In a state in which the top of the working tool 30 has come into contact with the bottom of the second locking member 523 , the working tool 30 connected to the bottom of the second fastening member 410 pushes the second locking member 523 upward.

[0105] The second locking member 523 is isolated from the first body portion 511 and separated from the first locking member 513 by an external force applied by the working tool 30 .

[0106] The lifting unit 300 moves upward together with the second locking member 523. The first fastener 100 is inserted into the second fastener 410 through the top of the second fastener 410. In this case, since the width of the inlet guide 130 is formed to decrease toward the end thereof, the first fastener 100 can be smoothly inserted into the second fastener 410.

[0107] Thereafter, in a state where the inner peripheral surface of the second fastening member 410 has been engaged with the outer peripheral surface of the first fastening member 100, the working tool 30 is moved toward one side of the second fastening member 410 (for example, based on the outer peripheral surface of the first fastening member 100). Figure 16 The rotational power is increased to the second fastening member 410 in the counterclockwise direction.

[0108] The second fastening member 410 relatively rotates about the first fastening member 100 toward one side of the first fastening member, is screwed onto the first fastening member 100 , and moves upward together with the elevating unit 300 .

[0109] At this time, the restoration member 600 contracts in its length direction and accumulates elastic restoration force.

[0110] Thereafter, the top of the lifting member 310 comes into contact with the lower side of the top of the housing 200. The fastening of the first fastening member 100 and the second fastening member 400 is completed.

[0111] After the fastening of the first fastener 100 and the second fastener 400 is completed, the working tool 30 is separated from the second fastening member 410 and detached to the outside of the housing 200 .

[0112] The second body portion 521 moves downward by its own weight alone with the second fastening member 410 .

[0113] When the second body portion 521 moves downward a certain distance or more, the bottom of the second locking member 523 is seated on the top of the first body portion 511 , and the second locking member 523 is restricted and connected to the first locking member 513 .

[0114] Thereafter, the second fastening member 410 may be moved toward the other side (eg, based on Figure 16 ), that is, in a direction in which the second fastening member 400 is separated from the first fastening member 100 due to vibration occurring when the vehicle is running, a rotational power is applied to the second fastening member 410.

[0115] This rotational power is offset by one side of the serration portion 523a coming into contact with the first locking member 513. Therefore, the second fastener 400 can maintain a state in which the second fastener 400 is fastened to the first fastener 100.

[0116] Figure 18 and Figure 19 is a diagram schematically illustrating a process in which a first fastening member and a second fastening member are separated from each other according to one embodiment of the present disclosure.

[0117] If the first fastener 100 and the second fastener 400 need to be separated from each other due to replacement of parts, the working tool 30 enters the housing 200 through the entrance hole 512 provided in the first locking unit 510 and is connected to the bottom of the second fastening member 410 .

[0118] In a state in which the top of the working tool 30 has come into contact with the bottom of the second locking member 523 , the working tool 30 connected to the bottom of the second fastening member 410 pushes the second locking member 523 upward.

[0119] The second locking member 523 is separated from the first locking member 513 by the external force applied by the working tool 30. The state of the second fastening member 410 is changed so that the second fastening member 410 can be moved toward the other side thereof (for example, based on the Figure 18 The state of rotation in the clockwise direction.

[0120] Thereafter, the working tool 30 adds rotational power to the second fastening member 410 toward the other side of the second fastening member 410 .

[0121] The second fastening member 410 is relatively rotated toward the other side thereof with respect to the first fastening member 100. The screw connection of the second fastening member 410 on the first fastening member 100 is released, so that the second fastening member 410 moves downward together with the lifting unit 300.

[0122] When the second fastening member 410 is separated from the first fastening member 100, the restoration component 600 extends along its length direction by the elastic restoration force that has accumulated in the restoration component 600, and the restoration component restores the lifting unit 300 to the initial position of the lifting unit and places the bottom of the second locking member 523 on the top of the first main body 511.

[0123] The present disclosure has been described above based on the embodiments shown in the drawings, but these embodiments are merely illustrative. It should be understood by those skilled in the art that various modifications and other equivalent embodiments can be made based on these embodiments.

Claims

1. A fastening device for a vehicle, comprising: a first fastener secured to the first structure; a housing secured to the second structure and configured such that the first fastener is inserted into a side of the housing; a lifting unit, mounted in the housing in a manner capable of moving up and down; a second fastener rotatably supporting the lifting unit, the second fastener being fastened to or separated from the first fastener in a rotational direction of the second fastener, and moving up and down together with the lifting unit; as well as The locking unit is configured to interfere with a working tool entering the other side of the housing and selectively allow the second fastener to rotate.

2. The fastening device for a vehicle according to claim 1, wherein The locking unit comprises: a first locking unit connected to the other side of the housing; and The second locking unit is connected to the second fastener in an upwardly and downwardly movable manner, is fastened to or separated from the first locking unit in a moving direction of the second locking unit, and is configured to selectively allow rotation of the second fastener.

3. The fastening device for a vehicle according to claim 2, wherein: The first locking unit includes: a first main body portion arranged to face the second locking unit; an entry hole formed through the first body portion and configured to provide guidance of the work tool into the housing; and The first locking member is configured to protrude from the first body portion and be constrained to and connected to the second locking unit when the second locking unit is seated on the first body portion.

4. The fastening device for a vehicle according to claim 3, wherein: The first locking member is provided in plurality, and The plurality of first locking members are spaced apart from each other at set intervals in a circumferential direction of the first body portion.

5. The fastening device for a vehicle according to claim 2, wherein: When the working tool enters the housing, the second locking unit moves upward and separates from the first locking unit, and When the working tool is detached from the housing, the second locking unit moves downward and is fastened to the first locking unit.

6. The fastening device for a vehicle according to claim 5, wherein The second locking unit includes: a second main body, disposed between the lifting unit and the second fastener, and mounted in a slidable manner in a length direction of the second fastener; an anti-rotation unit provided in the second body portion so that relative rotation of the second body portion with respect to the second fastener is prevented; and A second locking member extends from the second body portion and is connected to the first locking unit when the second body portion moves downward by a set distance or more.

7. The fastening device for a vehicle according to claim 6, wherein: The anti-rotation unit is formed to have a polygonal cross-sectional shape and is connected to the second fastener.

8. The fastening device for a vehicle according to claim 6, wherein The second locking member includes a plurality of serrations configured to protrude from an outer peripheral surface of the second body portion in a radial direction of the second body portion.

9. The fastening device for a vehicle according to claim 8, wherein The serrations come into contact with the first locking unit and restrict the second fastener from rotating in a direction in which the second fastener is separated from the first fastener.

10. The fastening device for a vehicle according to claim 1, wherein The lifting unit comprises: a lifting member mounted in the housing and configured so that the second fastener is inserted into the lifting member; a guide portion extending from the elevating member and slidably connected to the housing; and A support portion extends from the lifting member and is configured to rotatably support the second fastener.

11. The fastening device for a vehicle according to claim 10, wherein: The second fastener comprises: a second fastening member disposed within the elevating member and configured to have a thread provided on an inner circumferential surface of the second fastening member; a capturing portion extending from the second fastening member and rotatably connected to one side of the supporting portion; and A flange extends from the second fastening member and is configured to prevent the second fastening member from moving up and down relative to the elevating unit by contacting the other side of the support portion.

12. The fastening device for a vehicle according to claim 11, wherein The second fastening member has a polygonal cross-sectional shape.

13. The fastening device for a vehicle according to claim 1, further comprising: A restoring component is configured to restore the lifting unit to an initial position when the second fastening member is separated from the first fastening member.

14. The fastening device for a vehicle according to claim 13, wherein The restoration member is installed between the housing and the lifting unit and is provided in a stretchable manner in a length direction of the restoration member.

15. The fastening device for a vehicle according to claim 13, wherein Both ends of the restoration member are supported by being in contact with the housing and the lifting unit surface, respectively.

16. The fastening device for a vehicle according to claim 15, wherein Each of both end portions of the restoration member has a semicircular cross-section.

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