Parts unit and vehicle body assembly structure

Abstract

The present invention relates to a part unit and a vehicle body assembly structure. In particular, the present invention relates to a part unit and a vehicle body assembly structure that significantly improves the ease of assembling parts to a vehicle body such as a curved surface.

Description

[Technical field]

[0001] The present invention relates to a part unit and a vehicle body assembly structure. In particular, the present invention relates to a part unit and a vehicle body assembly structure that significantly improves the ease of assembling parts to a vehicle body such as a curved surface. [Background technology]

[0002] A conventional vehicle body assembly structure manages appropriate dimensional tolerances of the vehicle body and the parts when assembling the parts to the vehicle body.

[0003] However, in Patent Document 1, the anti-rotation piece that prevents the nut from rotating is bent to one side of the nut insertion hole in the body panel of the vehicle, which increases the size of the hole in the body panel and may weaken the strength.

[0004] In particular, in one embodiment of Patent Document 1 (see Figures 1 to 16), a hole separate from the nut insertion hole must be drilled in order to bend the anti-rotation piece, and a slot communicating with the nut insertion hole must be formed, which inevitably further weakens the strength of the vehicle body inner panel.

[0005] Moreover, one embodiment of Patent Document 1 (see Figs. 1 to 16) is configured with a three-step assembly step, in which the nut is primarily inserted into the nut insertion hole, then moved secondarily through the slot before being tightened.

[0006] Meanwhile, in other embodiments of Patent Document 1 (see Figs. 17 to 28), the nuts are constantly deformed and cannot be recycled once they have been fastened and used. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Korean Patent Publication No. 10-2419003 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention is directed to solving the above-referenced problems and other problems.

[0009] Another object of the present invention is to provide a component unit in which a fastening module with improved tolerances, including a recyclable nut portion and bolt portion, is assembled to a mounting portion of the component.

[0010] Another object of the present invention is to provide a vehicle body assembly structure with improved assembly and strength, in which a fastening module with improved tolerances, including a recyclable nut portion and bolt portion, fastens and connects a component unit assembled to a mounting portion of a component to a vehicle body. [Means for solving the problem]

[0011] According to one aspect of the present invention to achieve the above or other objects, there is provided a parts unit to be assembled to a vehicle body part, the parts including a part having a plurality of mounting parts and a fastening module to be assembled to each of the mounting parts, the fastening module including a screw bushing part installed on the mounting part so as to be linearly movable back and forth, a bolt part inserted from a rear of the screw bushing part toward the front, and a nut part fastened to a male threaded rod of the bolt part protruding forward, the screw bushing part including a screw cover part installed on the mounting part, a screw bushing screwed to the screw cover part, and a rotation prevention part formed on the screw cover part and preventing rotation of the nut part relative to rotation of the bolt part, wherein the nut part and the screw bushing tightly fasten the inner and outer surfaces of the vehicle body part by rotation of the bolt part.

[0012] According to one aspect of the present invention to achieve the above or other objects, there is provided a vehicle body assembly structure, a component unit to be assembled to a vehicle body section, the vehicle body section including a vehicle body outer panel and an inner vehicle body panel having an assembly hole penetrating in a front-rear direction, the component unit including a part having a plurality of mounting sections formed thereon, and a fastening module fastening and coupling the mounting sections to the inner vehicle body panel, the fastening module including a screw bushing portion installed on the mounting section to be linearly movable forward and backward, a bolt portion inserted from a rear of the screw bushing portion toward the front, and a nut portion fastened to a male threaded rod of the bolt portion protruding forward, the screw bushing portion including a screw cover portion installed on the mounting section, a screw bushing screwed to the screw cover portion, and a rotation prevention portion formed on the screw cover portion and inserted into the assembly hole, the rotation prevention portion preventing rotation of the nut portion relative to rotation of the bolt portion, Effect of the Invention

[0013] The effects of the component unit and vehicle body assembly structure according to the present invention will be described below.

[0014] According to at least one embodiment of the present invention, there is provided a part unit embodying a fastening module in which a nut portion can be recycled.

[0015] According to at least one embodiment of the present invention, a component unit is provided that improves the ease of assembling a fastening module to a component at one time.

[0016] According to at least one of the embodiments of the present invention, there is provided a vehicle body assembly structure that prevents a decrease in strength by minimizing assembly holes in the vehicle body.

[0017] According to at least one of the embodiments of the present invention, a vehicle body assembly structure is provided that is expected to improve the process and assembly workability of component units in a vehicle body, thereby improving quality and reducing costs.

[0018] Further scope of applicability of the present invention will become apparent from the following detailed description, however, it should be understood that the detailed description and specific embodiments, such as preferred embodiments of the present invention, are given by way of example only, since various changes and modifications within the spirit and scope of the present invention will become apparent to those skilled in the art. [Brief description of the drawings]

[0019] [Figure 1] 1 is a front perspective view of a vehicle body assembly structure according to an embodiment of the present invention; FIG. [Diagram 2] FIG. 1 is an exploded perspective view of a vehicle body assembly structure according to an embodiment of the present invention, as viewed from the front. [Diagram 3] FIG. 2 is a rear perspective view of FIG. [Figure 4] FIG. 3 is a rear perspective view of FIG. 2. [Diagram 5] FIG. 2 is a front and rear perspective view showing the fastening module in isolation; [Figure 6] FIG. 2 is a front and rear perspective view showing the fastening module in isolation; [Figure 7] 6 is an enlarged perspective view showing a screw cover portion and a rotation prevention portion in FIG. 5. FIG. [Figure 8] FIG. 6 is an enlarged perspective view of the screw bush of FIG. 5. [Figure 9] 11A-11C are perspective views showing the procedure for assembling the fastening module to the mounting of the component. [Figure 10] 11A-11C are perspective views showing the procedure for assembling the fastening module to the mounting of the component. [Figure 11] 11A-11C are perspective views showing the procedure for assembling the fastening module to the mounting of the component. [Figure 12] FIG. 12 is a cross-sectional perspective view taken along line AA in FIG. 11. [Figure 13] FIG. 2 is a front perspective view of a part fastening module inserted into an interior panel of a vehicle; [Figure 14] FIG. 1 is a side view of a part fastening module inserted into an interior panel of a vehicle body. [Figure 15] This is a front perspective view showing the state in which the wing piece of the nut part deviates from the seating piece and engages with the rotation preventing piece by tightening the bolt part. [Figure 16] This is a side view showing how the wing piece of the nut part deviates from the seating piece and engages with the rotation preventing piece by tightening the bolt part. [Figure 17] This is a front perspective view of the nut portion, which moves backward as the bolt is continuously tightened, hanging on the body panel. [Figure 18] This is a side view of the nut portion, which moves backward as the bolt is continuously tightened, hooked onto the body panel inside the vehicle. [Figure 19] This is a front oblique view of the bolt portion and the screw bushing in contact with each other as a result of continued tightening, and the nut portion and the screw bushing in close contact with the inner and outer surfaces of the body panel of the vehicle. [Figure 20] This is a side view of the bolt portion and screw bushing facing forward as a result of continued tightening, and the nut portion and screw bushing being tightly fastened against the inner and outer surfaces of the body panel. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, the embodiments disclosed in the present invention will be described in detail with reference to the attached drawings. Regardless of the drawing numbers, the same or similar components are given the same reference numbers and the duplicated description thereof will be omitted. The suffixes "module" and "part" for components used in the following description are given or mixed for the sake of ease of specification writing only, and do not have a different meaning or role by themselves. In addition, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of related known technology may make the gist of the embodiments disclosed in this specification unclear, the detailed description will be omitted. In addition, the attached drawings are only for the purpose of making the embodiments disclosed in this specification easier to understand, and the technical ideas disclosed in this specification are not limited by the attached drawings, and it should be understood that all modifications, equivalents, or alternatives included in the idea and technical scope of the present invention are included.

[0021] Terms including ordinal numbers such as first, second, etc. are used to describe various components, but the components are not limited to the terms. The terms are used only to distinguish one component from another.

[0022] When an element is referred to as being "coupled" or "connected" to another element, it should be understood that it may be directly coupled or connected to the other element, but that there may be other elements in between. On the other hand, when an element is referred to as being "directly coupled" or "directly connected" to another element, it should be understood that there are no other elements in between.

[0023] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0024] In this application, the terms "comprise" or "have" and the like are intended to specify the presence of any feature, number, step, operation, component, part, or combination thereof described hereinabove in the specification, but are to be understood as not precluding the presence or additional possibility of one or more other features, number, steps, operations, components, parts, or combinations thereof.

[0025] For convenience of explanation, the size of components in the drawings may be exaggerated or reduced. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, and the present invention is not necessarily limited thereto.

[0026] It is understood that certain embodiments may be implemented differently, and therefore certain steps may be performed differently than described. For example, two steps described as successive may be performed substantially simultaneously or may be performed in the reverse order from that described.

[0027] In the following examples, when a membrane, region, component, etc. is said to be connected, it includes not only the case where the membrane, region, component is directly connected, but also the case where the membrane, region, component is indirectly connected with another membrane, region, component interposed therebetween. For example, in this specification, when a membrane, region, component, etc. is electrically connected, it includes not only the case where the membrane, region, component is directly electrically connected, but also the case where another membrane, region, component, etc. is indirectly electrically connected therebetween.

[0028] In the following, the x-axis is defined as the left-right direction, the y-axis as the inside-outside or front-to-back direction, and the z-axis as the up-down direction.

[0029] 1 and 2 are front assembled and separated perspective views of a vehicle body assembly structure according to an embodiment of the present invention, and FIGS. 3 and 4 are rear perspective views of FIGS. 1 and 2. In FIG.

[0030] 1 to 4, a vehicle body assembly structure according to an embodiment of the present invention includes a component unit 1.

[0031] The part unit 1 is assembled to a vehicle body section 30 .

[0032] The part unit 1 includes a part 3. The part 3 is a flush door from which a grip is pulled out.

[0033] The component 3 includes a housing 5. The housing 5 is assembled into a front and rear housing. The grip 4 is disposed on the front side of the housing 5. An operating unit (not shown) for pulling out the grip 4 is mounted inside the housing 5.

[0034] The component 3 includes a mounting portion 7. The mounting portion 7 is installed on the top and bottom of the housing 5 or is formed integrally with the housing 5. In other words, the mounting portion 7 basically consists of two mounting portions on the top and bottom, and one mounting portion on the bottom, and the number of mounting portions can be adjusted according to the installation environment. Referring to FIG. 9, the mounting portion 7 is annular with front and rear through holes.

[0035] The component unit 1 includes a fastening module 10. The fastening module 10 is assembled to a mounting part 7. The fastening module 10 is coupled to a vehicle body.

[0036] 5 and 6 are front and rear perspective views of the fastening module 10, and FIG. 7 is an enlarged perspective view of the screw cover portion 110 and the rotation prevention portion 140 of FIG.

[0037] 5, 6 and 7, the fastening module 10 includes a screw bushing part 100. The screw bushing part 100 is installed in the mounting part 7 as shown in FIG.

[0038] The screw bushing part 100 includes a screw cover part 110. The screw cover part 110 is installed on the mounting part 7. The screw cover part 110 is integrally injection molded. The screw cover part 110 improves the assembling of the fastening module 10 to the mounting part 7.

[0039] The screw cover part 110 includes a hollow cover 120. An inner screw 121 is formed on the inner peripheral surface of the hollow cover 120.

[0040] The screw cover part 110 is attached to and detached from the mounting part 7 by the attachment / detachment part 130. The attachment / detachment part 130 attaches and detaches the hollow cover 120 to and from the mounting part 7.

[0041] 9, 10 and 11 are perspective views illustrating the assembly of the fastening module 10 on the mounting 7 of the component 3. In FIG.

[0042] 9, the detachable part 130 includes a first detachable part 131. The first detachable part 131 is formed in the mounting part 7.

[0043] The first detachable part 131 includes a first front barb inner protrusion 132. The first front barb inner protrusion 132 is formed on the front surface of the mounting part 7. That is, the first front barb inner protrusions 132 are formed on the left and right sides of the front side of the mounting part 7 so as to protrude toward the center.

[0044] The first detachable portion 131 includes a first rear barb inner protrusion 133. The first rear barb inner protrusion 133 is formed in a diagonal direction on the rear side of the mounting portion 7. The first rear barb inner protrusions 133 are arranged on the left and right sides, top and bottom when viewed from the front or rear.

[0045] The removable portion 10 includes a second removable portion 134. The second removable portion 134 is formed in the hollow cover 120.

[0046] The second detachable portion 134 includes a second front barb outer protrusion 135. The second front barb outer protrusion 135 is formed to protrude outwardly to face each other at the front of the hollow cover 120. The second front barb outer protrusion 135 passes between the first front barb inner protrusion 132 and the first rear barb inner protrusion 133 in the up-down direction. The second front barb outer protrusion 135 is engaged with the first front barb inner protrusion 132.

[0047] The second detachable portion 134 includes a second rear barb outer protrusion 136. The second rear barb outer protrusion 136 is formed in a diagonal direction on the rear side of the hollow cover 120. The second rear barb outer protrusions 136 are disposed above and below the second front barb outer protrusions 135 on the left and right sides.

[0048] The hollow cover 120 is inserted from the rear to the front of the mounting part 7 (see FIG. 10), and when rotated 90 degrees (see FIG. 11), the second detachable part 134 is hooked onto the first detachable part 131 and coupled thereto.

[0049] In addition, the detachable part 130 can easily assemble the fastening module 10, which is a previously prepared tolerance module, to the vehicle body part 30, improving workability, and thereby improving performance such as quality and cost.

[0050] 5, 6 and 7, the screw bushing part 100 includes a rotation preventing part 140. The rotation preventing part 140 prevents the nut part 300 from rotating relative to the rotation of the bolt part 200. The rotation preventing part 140 is formed on the screw cover part 110.

[0051] The rotation prevention part 140 includes an extension bar 141 extending forward from the front surface of the screw cover part 110. The extension bars 141 are configured in a pair on the left and right. In particular, the rear end of the extension bar 141 is installed perpendicular to the second front bar outer protrusion 135. The extension bar 141 is configured as a circular arc bar.

[0052] The rotation preventing portion 140 includes a rotation preventing protrusion 143. The rotation preventing protrusion 143 protrudes in the left-right direction relative to the front-rear direction of the extension bar 141. Referring to FIG. 7, the left rotation preventing protrusion 143 is disposed on the upper side, and the right rotation preventing protrusion 143 is disposed on the lower side. In other words, the left rotation preventing protrusion 143 and the right rotation preventing protrusion 143 are disposed diagonally opposite each other. Therefore, the nut portion 300 rotates in the direction in which the rotation preventing protrusion 143 does not exist, and when it catches on the rotation preventing protrusion 143, it cannot rotate any further. The extension bar 141 and the rotation preventing protrusion 143 are shaped like the character "S" or "S" when viewed from the front.

[0053] The rotation prevention portion 140 includes a mounting piece 145. The mounting piece 145 is formed on the front and rear inner sides of the extension bar 141. The mounting piece 145 is arranged to face the rotation prevention protrusion 143. Thus, the wing 330 is mounted between the rotation prevention protrusion 143 and the mounting piece 145. The mounting piece 145 is formed with an inclined surface 146 along the rotation direction that fastens the wing 330. The inclined surface 146 supports a part of the tip edge of the wing 330. Thus, the wing 330 stops in the correct position as shown in FIG. 11 and is inserted as it is without interfering with the assembly hole 51 of the body panel 50, so that the wing 330 can easily ride on the inclined surface 146 and depart as it rotates.

[0054] FIG. 8 is an enlarged perspective view of the screw bushing 150 of FIG.

[0055] 5, 6 and 8, the screw bushing part 100 includes a screw bush 150. The screw bush 150 has an outer screw 151 formed on its outer circumferential surface. The screw bush 150 is injection molded. The outer screw 151 of the screw bush 150 is fastened to the inner screw 121 of the hollow cover 120. The screw bush 150 moves linearly in the axial direction relative to the hollow cover 120 when rotated. The inner screw 121 of the hollow cover 120 and the outer screw 151 of the screw bush 150 have a large grid angle, allowing free linear movement. The screw bush 150 is fastened and inserted from the front to the rear of the hollow cover 120.

[0056] 8 and 12, the screw bushing 150 includes inclined plates 153. The inclined plates 153 are formed on the inner wall of the screw bushing 150. The inclined plates 153 are arranged at intervals of 120 degrees. When the male threaded rod 220 of the bolt portion 200 is inserted into the space formed at the tip of the three inclined plates 153 as shown in FIG. 6, the three inclined plates 153 grip the bolt portion 200 to improve the separation of the bolt portion 200 and allow the male threaded rod 220 to move in the direction in which the inclined plates 153 are lifted (xz direction), thereby significantly improving the efficiency of adhesion during tightening.

[0057] In addition, a hook 154 is formed on the front end of the inclined plate 153. The hook 154 engages with the threads of the male threaded rod 220 of the bolt part 200 to prevent the bolt part 200 from slipping backward. The hook 154 fixes the male threaded rod 220 in position, and always maintains the initial position when assembling and transporting the product, and prevents the bolt from coming off.

[0058] These three inclined portions 153 provide a flexible structure to prevent rear slippage of the bolt portion 200, maintain the central origin between the screw bush 150 and the bolt portion 200 (ensuring an XZ reference point that is convenient for using tools), prevent play between the screw bush 150 and the bolt portion 200 (improving noise-inducing factors such as impact sounds), and allow tolerance correction by adjusting the XZ directions.

[0059] 5 and 6, the fastening module 10 includes a bolt portion 200. The bolt portion 200 is inserted into the screw bushing 150 from the rear toward the front.

[0060] The bolt part 200 includes a bolt with a washer 200. The bolt part with a washer 200 includes a male threaded rod 220 having a hexagonal head 210, and a headed washer 230 formed on the head 210. The head 210 is a tool application part, the male threaded rod 220 is a fastening part for the nut part 300, and the headed washer 230 is a rear end surface pressure part for the screw bushing 150.

[0061] 5 and 6, the fastening module 10 includes a nut portion 300. The nut portion 300 includes a nut 310. Referring to Figs. 9 to 11, the nut portion 310 is fastened to the male threaded rod 220 protruding forward from the front surface of the screw bushing 150.

[0062] The nut portion 300 includes wings 330. The wings 330 are formed to extend from the outer circumferential surface of the nut 310 to the left and right.

[0063] Therefore, after the nut portion 300 is inserted from the inside to the outside of the vehicle body portion 30, when the bolt portion 200 is rotated, the wing piece 330 moves backward and then the screw bush 150 moves forward, thereby tightly tightening the inner and outer surfaces of the vehicle body portion 30 in close contact with each other.

[0064] A vehicle body assembly according to an embodiment of the present invention includes a vehicle body section 30.

[0065] 1 to 4, the vehicle body 30 includes a vehicle body outer plate 40. The vehicle body outer plate 40 is an outer plate having a curved surface. The vehicle body outer plate 40 includes a grip pull-out hole 44. The grip 4 is disposed inside the grip pull-out hole 44.

[0066] The body section 30 includes an inner panel 50. The inner panel 50 is disposed apart from the outer panel 40.

[0067] 4, the inner panel 50 of the vehicle body includes an assembly hole 51. The assembly hole 51 is a rectangular hole penetrating from front to rear. The assembly hole 51 has a size that allows the rotation prevention part 140 to pass through.

[0068] The body panel 50 includes a component insertion hole 53. The front surface of the housing 5 of the component 3 is inserted into the component insertion hole 53 as shown in FIG. 3. At this time, the fastening module 10 is disposed inside the body panel 50 so as to face the assembly hole 51.

[0069] 13 to 20 are diagrams showing a procedure for assembling the component 3 of FIG.

[0070] 13 and 14 are a perspective view and a side view showing the rotation prevention portion 140 of the fastening module 10 after it has been inserted into the assembly hole 51 of the body panel 50. FIG.

[0071] When the rotation prevention part 140 is inserted into the assembly hole 51 as shown in Figures 13 and 14, when the bolt part 200 is rotated in the tightening direction as shown in Figures 15 and 16, the wing piece 330 of the nut part 300 is rotated until it deviates from the seating piece 145 and engages with the rotation prevention protrusion 143.

[0072] As shown in Figures 15 and 16, the wing 330 caught on the rotation prevention protrusion 143 cannot rotate any further, and the nut 310 moves backward along the male threaded rod 220 by the rotating bolt portion 200, and moves to the outer surface of the body panel 50 and then caught there, as shown in Figures 17 and 18.

[0073] The bolt portion 200, which rotates relative to the stationary nut 310, rotates together with the screw bushing 150 and advances as shown in FIGS.

[0074] As shown in Figures 19 and 20, if the bolt portion 200 is rotated even after the wing piece 330 and the screw bushing 150 are engaged with the inner and outer surfaces of the inner panel 50 of the vehicle body, the wing piece 330 and the screw bushing 150 are prevented from loosening by the sawtooth protrusions of the nut 310 and the bolt portion 200, and can be tightened further in close contact with the inner and outer surfaces of the inner panel 50 of the vehicle body.

[0075] The above-mentioned embodiments of the present invention or other embodiments are not mutually exclusive or distinct, and the above-mentioned embodiments of the present invention or other embodiments may be used together or combined with each other in their respective configurations or functions.

[0076] It is obvious to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or essential features of the present invention. The above detailed description should not be construed as limiting in all respects, but should be considered as illustrative. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention. [Explanation of symbols]

[0077] 1: Parts unit 3: Parts (flash handle) 4: Grip 5: Housing 7: Mounting part 10: Fastening module 30: Body 40: Body exterior 44: Grip removal hole 50: Body panel 51: Assembly hole 53: Part insertion hole 100: Screw bushing part 110: Screw cover part 120: Hollow cover 130: Detachable part 131, 134: 1st and 2nd detachment section 132, 133: First anterior and posterior hook inner protrusion 135, 136: Second front and rear outer protrusion 150: Screw bush 200: Bolt section 220: Male threaded rod 230: Headed washer 300: Nut part 310: Nut 330: Feather

Claims

1. A part unit to be assembled to a vehicle body, a part having a plurality of mounting portions formed thereon; and a fastening module assembled to each of the mounting portions, The fastening module comprises: a screw bushing portion that is installed on the mounting portion so as to be linearly movable forward and backward; A bolt portion is inserted from the rear of the screw bushing portion toward the front thereof; A nut portion fastened to the male threaded rod of the bolt portion protruding forward, The screw bushing portion is a screw cover portion installed on the mounting portion; A screw bushing that is screw-fastened to the screw cover portion; a rotation preventing portion formed in the screw cover portion and configured to prevent rotation of the nut portion relative to rotation of the bolt portion, By rotating the bolt portion, the nut portion and the screw bush are tightly fastened to the inner and outer surfaces of the vehicle body portion. Parts unit.

2. The nut portion is A nut fastened to the male threaded rod; a wing formed on the outer peripheral surface of the nut and brought into close contact with the outer surface of the vehicle body while being engaged with the rotation preventing portion. The component unit according to claim 1 .

3. The rotation prevention portion is an extension bar extending forward from a front surface of the screw cover; a rotation prevention protrusion that protrudes in a left-right direction relative to a front-rear direction of the extension bar and that catches the wing to prevent rotation. The component unit according to claim 2 .

4. The extension bar is provided with a seating piece. The blade is seated between the rotation preventing protrusion and the seating piece. The component unit according to claim 3.

5. The seating piece is formed with an inclined surface along the rotation direction for fastening the wing piece, The inclined surface supports a portion of the peripheral tip edge of the blade. The component unit according to claim 4.

6. The screw cover portion is A hollow cover having a screw formed on an inner circumferential surface thereof; and a detachment section for attaching and detaching the hollow cover to and from the mounting section. The component unit according to claim 1 .

7. The detachable portion is A first detachable portion formed on the mounting portion; A second detachable portion formed on the hollow cover, When the hollow cover is inserted and rotated into the mounting portion, the second detachable portion is detached from the first detachable portion. The component unit according to claim 6.

8. The first detachable portion is a first front hook inner protrusion formed on the front left and right of the mounting portion; a first rear barb inner protrusion formed on a rear diagonal of the mounting portion, The second detachable portion is Second front outer hook protrusions formed on the left and right front sides of the hollow cover; a second rear barb outer protrusion formed on a rear diagonal line of the hollow cover; The second front barb outer protrusion is engaged with the first front barb inner protrusion, The second rear barb outer protrusion is engaged with the first rear barb inner protrusion. The component unit according to claim 7.

9. The rotation preventing portion is formed on the second front hook outer protrusion. The component unit according to claim 8.

10. The screw bush has an inner wall formed with inclined plates at 120 degree intervals, A hook is formed at the front end of the inclined plate. The hook engages with the threads of the bolt portion to restrict rearward movement. The component unit according to claim 1 .

11. A part unit to be assembled to a vehicle body, The vehicle body portion includes: The vehicle includes an outer body panel and an inner body panel having an assembly hole extending therethrough in the front and rear directions; The part unit includes: a part having a plurality of mounting portions formed thereon; a fastening module for fastening the mounting portion to the body panel, The fastening module comprises: a screw bushing portion that is installed on the mounting portion so as to be linearly movable forward and backward; A bolt portion is inserted from the rear of the screw bushing portion toward the front thereof; A nut portion fastened to the male threaded rod of the bolt portion protruding forward, The screw bushing portion is a screw cover portion installed on the mounting portion; A screw bushing that is screw-fastened to the screw cover portion; a rotation prevention portion that is formed in the screw cover portion and is inserted into the assembly hole to prevent rotation of the nut portion relative to rotation of the bolt portion, By rotating the bolt portion, the nut portion and the screw bush are tightly fastened to the inner and outer surfaces of the body panel. Body assembly structure.

12. The nut portion is A nut fastened to the male threaded rod; a wing formed on the outer peripheral surface of the nut and brought into close contact with the outer surface of the vehicle body while being engaged with the rotation preventing portion. The vehicle body assembly structure according to claim 11.

13. The rotation prevention portion is an extension bar extending forward from a front surface of the screw cover; a rotation prevention protrusion that protrudes in a left-right direction relative to a front-rear direction of the extension bar and that catches the wing to prevent rotation. The vehicle body assembly structure according to claim 12.

14. The extension bar is provided with a seating piece. The blade is seated between the rotation preventing protrusion and the seating piece. The vehicle body assembly structure according to claim 13.

15. The seating piece has an inclined surface formed along the rotation direction of the blade, The inclined surface supports a portion of the peripheral tip edge of the blade. The vehicle body assembly structure according to claim 14.

16. The screw cover portion is A hollow cover having a screw formed on an inner circumferential surface thereof; and a detachment section for attaching and detaching the hollow cover to and from the mounting section. The vehicle body assembly structure according to claim 11.

17. The detachable portion is A first detachable portion formed on the mounting portion; A second detachable portion formed on the hollow cover, When the hollow cover is inserted and rotated into the mounting portion, the second detachable portion is detached from the first detachable portion. The vehicle body assembly structure according to claim 16.

18. The first detachable portion is a first front hook inner protrusion formed on the front left and right of the mounting portion; a first rear barb inner protrusion formed on a rear diagonal of the mounting portion, The second detachable portion is Second front outer hook protrusions formed on the left and right front sides of the hollow cover; a second rear barb outer protrusion formed on a rear diagonal line of the hollow cover; The second front barb outer protrusion is engaged with the first front barb inner protrusion, The second rear barb outer protrusion is engaged with the first rear barb inner protrusion.

18. A vehicle body assembly structure according to claim 17.

19. The rotation preventing portion is formed on the second front hook outer protrusion.

20. The vehicle body assembly structure according to claim 18.

20. The screw bush has an inner wall formed with inclined plates at 120 degree intervals, A hook is formed at the front end of the inclined plate. The hook engages with the threads of the bolt portion to restrict rearward movement. The vehicle body assembly structure according to claim 11.

Images