A fastening assembly and method for automotive component assembly

Abstract

The application relates to a fastening assembly and method for assembling automobile parts, belonging to the automobile technical field, and solves the problem of long assembly time of existing automobile parts by screwing, and comprises the following: a fastener, which comprises a head and a rod part located at the bottom of the head, the rod part is provided with at least one convex part distributed along a spiral line, and the lower surface of the convex part is an inclined surface inclined towards the direction away from the head; a clamping part, which is internally provided with a fixed channel matched with the rod part, the fixed channel is provided with a spiral groove matched with the convex part, the clamping part is composed of multiple clamping parts arranged in a ring, and the outer periphery of the clamping part is provided with a ring-shaped elastic part to compress the multiple clamping parts; and a fixing part, which can be fixed with a vehicle body and is provided with a sliding groove matched with the clamping part, so that the multiple clamping parts can move along the radial direction of the clamping part after the clamping part is assembled with the fixing part. The fastening assembly shortens the assembly time of automobile parts.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and more specifically to a fastening assembly and method for assembling automotive parts. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] In automobile assembly, apart from the welding and riveting of the body structure, most other parts are connected by threaded fasteners such as bolts or screws. After the later installation, some body parts undergo adjustment processes to achieve a good match with surrounding parts. Car trim parts, such as roof racks, need to be fixed to the body with threaded fasteners such as bolts. Fenders, side panels in the front engine compartment, etc., also need to be fixed to the body with bolts. When using bolts for connection, the bolts need to be rotated many times to complete the assembly of the corresponding parts. The assembly time is long and the production efficiency is low. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a fastening assembly for assembling automotive parts, which shortens assembly time and improves production efficiency.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] In a first aspect, embodiments of the present invention provide a fastening assembly for assembling automotive parts, comprising:

[0007] Fastener: includes a head and a shank located on the bottom surface of the head, the shank having at least one protrusion distributed along a helical line, the lower surface of the protrusion being an inclined surface sloping away from the head;

[0008] Clamping component: The internal part is provided with a fixing channel that matches the rod. The fixing channel is provided with a spiral groove that matches the protrusion. The clamping component is composed of multiple clamping parts arranged in a ring. The outer periphery of the clamping component is provided with an annular elastic element to press the multiple clamping parts together.

[0009] Fastener: It can be fixed to the vehicle body and has a groove that matches the clamping part so that after the clamping part and the fastener are assembled, multiple clamping parts can move radially along the clamping part.

[0010] Optionally, the angle between the upper surface of the protrusion and the axis of the rod is 90°-95°.

[0011] Optionally, the fastener is provided with a fixing post and can be fixed to the vehicle body via the fixing post.

[0012] Optionally, the fixing post is a threaded post, which can be fixedly connected to the vehicle body by a fixing nut pre-set on the vehicle body.

[0013] Optionally, the clamping part includes a clamping body and a sliding body located on top of the clamping body. Correspondingly, the groove on the fixing member includes a first groove that matches the sliding body and a second groove that matches the clamping body. The clamping body can pass through the fixing member through the second groove.

[0014] Optionally, the clamping member consists of two clamping parts. Correspondingly, the middle part of the fixing member is provided with an elongated groove to form a first sliding groove. The sliding body of the clamping part is slidably connected to the groove surface of the elongated groove. The bottom groove surface of the elongated groove is provided with an elongated through hole. The clamping body of the clamping part is slidably connected to the hole wall of the elongated through hole.

[0015] Optionally, the upper surface of the head is provided with a rotating groove to facilitate the rotation of the fastener by means of a tool.

[0016] Optionally, the outer circumferential surface of the clamping member is provided with an annular groove, and the annular elastic member is sleeved on the outer circumference of the clamping member through the circumferential groove.

[0017] Optionally, the annular elastic element is provided with a notch.

[0018] Secondly, embodiments of the present invention provide a method for fastening components used in the assembly of automotive parts.

[0019] After the fastener's shank is passed through the component to be secured, it is aligned with the fixing channel of the clamping component. The clamping component and the fixing component are pre-assembled, and the fixing component is then secured to the vehicle body.

[0020] A load is applied to the rod along its axis. The rod is inserted into the fixing channel. Under the action of the protrusion, multiple clamping parts overcome the elastic force of the annular elastic element and move in the radial direction of the clamping parts, so that the rod moves in the fixing channel until the head presses the part to be fixed onto the car body. Under the action of the elastic force of the annular elastic element, the protrusion is inserted into the spiral groove, and multiple clamping parts clamp the rod, thus completing the fixing of the part onto the car body.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The fastening assembly and method of the present invention, since the clamping member is connected by multiple clamping parts through an annular elastic element, and the protruding lower surface of the rod is an inclined surface, applying a load along the axial direction of the rod to the fastener can drive the clamping part to move radially through the protrusion, thereby enabling the rod to be inserted into the fixed channel to a set depth, so that the head presses the parts tightly onto the vehicle body. When assembling the parts, only a load along the axial direction of the rod needs to be applied, without having to rotate the fastener multiple times, thus shortening the assembly time and improving production efficiency.

[0023] 2. The fastening component and method of the present invention have a 90°-95° ​​angle between the protruding upper surface and the axis of the rod, which plays a role in resisting pull-out and ensures that the rod of the fastener will not be pulled out from the fixing channel of the clamping part, thereby ensuring the fixing strength of the component, while leaving a deformation allowance, which is suitable for application scenarios with frequent disassembly and assembly. Attached Figure Description

[0024] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0025] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0026] Figure 2 This is a schematic diagram of the fastener structure in Embodiment 1 of the present invention;

[0027] Figure 3 This is a schematic diagram of the protruding structure of the fastener in Embodiment 1 of the present invention;

[0028] Figure 4 This is a schematic diagram of the clamping component structure in Embodiment 1 of the present invention;

[0029] Figure 5 This is a schematic diagram of the annular silicon-manganese steel sheet structure in Embodiment 1 of the present invention;

[0030] Figure 6 This is a schematic diagram of the fastener structure in Embodiment 1 of the present invention;

[0031] Figure 7 This is a front view of the assembly of the fastener and clamping component according to Embodiment 1 of the present invention;

[0032] Figure 8 This is a top view of the assembly of the fixing member and the clamping member in Embodiment 1 of the present invention;

[0033] Figure 9 This is a bottom view of the assembly of the fixing member and the clamping member in Embodiment 1 of the present invention;

[0034] Figure 10 This is a schematic diagram of fixing the luggage rack to the roof sheet metal using the method of Embodiment 2 of the present invention;

[0035] Among them, 1. Fastener, 1-1. Head, 1-2. Rod, 1-3. Rotating groove, 1-4. Protrusion, 1-4-1. Upper surface, 1-4-2. Lower surface, 2. Clamping part, 2-1. Clamping body, 2-2. Sliding body, 2-3. Annular silicon manganese steel sheet, 3. Fixing part, 3-1. External threaded post, 3-2. Long strip-shaped countersunk groove, 3-3. Long strip-shaped through hole, 4. Luggage rack, 5. Roof sheet metal. Detailed Implementation

[0036] For ease of description, the words "upper" and "lower" appearing in this invention only indicate that they are consistent with the upper and lower directions of the accompanying drawings and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] Example 1

[0038] This embodiment provides a fastening assembly for assembling automotive parts, such as... Figure 1 As shown, it includes a fastener 1, a clamping member 2, and a fixing member 3 used in conjunction. The fixing member 3 is used to fix it to the vehicle body. The clamping member 2 can cooperate with the fixing member 3. The fastener 1 includes a head 1-1 and a rod 1-2. The rod 1-2 can be inserted into the fixing channel provided by the clamping member 2 under the action of load along its axial direction. The clamping member 2 clamps and fixes the rod 1-2, and the head 1-1 presses the part to be fixed onto the vehicle body, thereby fixing the part to the vehicle body.

[0039] like Figure 2 As shown, the fastener 1 includes a head 1-1 and a rod 1-2 coaxially disposed on the bottom surface of the head 1-1. The head 1-1 adopts a disc-shaped structure or a frustum-shaped structure. In this embodiment, the head 1-1 adopts a frustum-shaped structure, and its smaller end is fixed to the top of the rod 1-2.

[0040] The upper surface of the head 1-1 is provided with a rotating groove 1-3, which makes it convenient for workers to rotate the entire fastener using tools such as wrenches.

[0041] The rotating groove 1-3 is a hexagonal groove or a cross-shaped groove, etc., preferably, the rotating groove 1-3 is a hexagonal groove.

[0042] The outer surface of the rod 1-2 is provided with at least one protrusion 1-4, and the protrusion 1-4 is distributed along a spiral line.

[0043] like Figure 3 As shown, in this embodiment, the lower surface 1-4-1 of the protrusion 1-4 is an inclined surface that is tilted away from the head. That is, in the cross section of the protrusion 1-4, the distance between the end of the lower surface 1-4-1 connected to the rod 1-2 and the head 1-1 is greater than the distance between the other end and the head 1-1.

[0044] In order to improve the pull-out resistance of the rod when the clamping member 2 clamps the rod 1-2, the angle between the upper surface 1-4-2 of the protrusion 1-4 and the axis of the rod is 90°-95°, preferably 92°.

[0045] like Figure 4 As shown, the clamping member 2 has a fixed channel coaxially arranged inside. The inner surface of the fixed channel has a spiral groove that matches the protrusion. After the rod 1-2 of the fastener 1 is inserted into the fixed channel, the protrusion 1-4 can be embedded in the spiral groove, thereby realizing the clamping member 2 to lock and fix the fastener 1.

[0046] The clamping component 2 is assembled from multiple clamping parts along the circumferential direction. The number of clamping parts can be two, three or more, and can be set by those skilled in the art according to actual needs.

[0047] Preferably, there are two clamping parts, both of which have a semi-circular annular cross-section and a spiral groove on their inner surface.

[0048] The clamping part includes a clamping body 2-1, the clamping body 2-1 has a semi-circular annular cross-section, and the inner surface of the clamping body 2-1 is provided with a spiral groove.

[0049] A sliding body 2-2 is provided on the top of the clamping body 2-1. In this embodiment, the sliding body 2-2 adopts a plate-shaped structure perpendicular to the axis of the clamping body, and the sliding body is provided on the top of the outer surface of the clamping body 2-1.

[0050] In this embodiment, the outer surface of the slider 2-2 has two parallel rectangular surfaces and an arc-shaped surface located between the ends of the two rectangular surfaces on the same side.

[0051] The outer surface of the clamping member is fitted with an annular elastic element. The contraction force of the annular elastic element can clamp the two clamping parts, thereby assembling the two clamping parts into clamping member 2.

[0052] like Figure 5 As shown, the annular elastic element is made of annular silicon manganese steel sheet 2-3, which has a notch to facilitate fitting the annular elastic element onto the outer surface of the clamping part.

[0053] The outer surface of the clamping member 2 is provided with an annular groove, and the annular elastic member is fitted inside the annular groove, which further facilitates the installation of the annular elastic member.

[0054] In this embodiment, the outer surface of the clamping parts of the two clamping parts is provided with a semi-circular groove. After the two semi-circular grooves are assembled, they form an annular groove, and the annular elastic element is fitted inside the annular groove.

[0055] like Figure 6 As shown, the fastener 3 is made of metal sheet using sheet metal processing. Both ends of the upper surface of the metal sheet are provided with fixing posts, and the metal sheet can be fixedly connected to the vehicle body through the fixing posts.

[0056] In one embodiment, the fixing post is used to fix it to the vehicle body by welding. In another embodiment, the fixing post is an externally threaded post 3-1. The vehicle body is provided with fixing holes that match the fixing post. When the fastener is assembled with the vehicle body, the fixing post passes through the fixing holes and then the fixing nut is tightened, thereby achieving the fixation of the fastener to the vehicle body.

[0057] A groove is formed by stamping in the middle of the metal plate. The groove is a long strip groove 3-2, which matches the shape of the sliding body 2-2. Its side groove surface includes two oppositely arranged rectangular planes and arc-shaped planes located at both ends of the two rectangular planes.

[0058] The elongated sink 3-2 has an elongated through hole 3-3 at the middle position, and the elongated through hole 3-3 matches the shape of the clamping body 2-1.

[0059] The elongated groove 3-2 and the elongated through hole 3-3 together form the sliding groove on the fixing member. After the clamping member 2 and the fixing member 3 are engaged, the two clamping parts can move radially along the clamping member 2 through the sliding groove, that is, the two clamping parts can move towards each other or away from each other.

[0060] Specifically, such as Figures 7-9 As shown, the rectangular surface of the outer side of the sliding body 2-2 is in contact with and slidably connected to the rectangular side surface of the elongated sink 3-2, and the bottom surface of the sliding body 2-2 is in contact with and slidably connected to the bottom surface of the elongated sink 3-2.

[0061] The two ends of the outer side of the clamp 2-1 are in contact with and slidably connected to the surface of the elongated through hole 3-3. The clamp 2-1 can also pass through the entire fixing member through the elongated through hole 3-3.

[0062] This configuration allows the clamping component 2 to be assembled with the vehicle body via the fixing component 3, and guides the radial movement of the two clamping parts, ensuring the normal operation of the entire clamping component 2.

[0063] Example 2

[0064] This embodiment provides a method for fastening components for assembling automotive parts as described in Embodiment 1, comprising the following steps:

[0065] The clamping component 2 and the fixing component 3 are assembled. Specifically, the two clamping bodies 2-1 of the clamping component 2 pass through the fixing component 3 through the elongated through hole 3-3, the bottom surface of the two sliding bodies 2-2 contacts the bottom groove surface of the elongated groove 3-2, and the annular silicon manganese steel sheet 2-3 is sleeved on the outer periphery of the clamping component 2 through the annular groove.

[0066] Fix the fastener 3 to the designated position on the vehicle body. Specifically, after passing the two fixing posts of the fastener 3 through the fixing holes provided on the vehicle body, tighten the fixing nuts to fix the fastener to the vehicle body.

[0067] Place the component in the target position, aligning the fixing hole on the component with the fixing channel of the clamp 2. Then, align the rod 1-2 of the fastener 1 with the fixing channel and apply a load along the axis of the rod to the fastener through the head 1-1, pressing the rod 1-2 into the fixing channel.

[0068] Since the lower surface 1-4-1 of the protrusion 1-4 is an inclined surface, under the action of load, the two clamping parts will overcome the elastic force of the annular silicon manganese steel sheet 2-3 and move radially outward along the clamping part 2, thereby realizing the continuous downward movement of the rod 1-2 in the fixed channel.

[0069] Apply a load to fastener 1 until head 1-1 presses the parts together. At this time, protrusion 1-4 corresponds to the spiral groove. Under the elastic force of annular silicon manganese steel sheet 2-3, the two clamping parts contract and protrusion 1-4 is embedded in the spiral groove. This achieves the clamping of the fastener rod 1-2 by the two clamping parts. At the same time, head 1-1 presses the parts together onto the vehicle body, thus completing the assembly of the parts and the vehicle body.

[0070] Since the upper surface of the protrusion 1-4 forms a 92° angle with the axis of the rod 1-2, it plays a role in resisting pull-out, ensuring the firmness of the fastener installation, and thus ensuring the fixing strength of the parts to the vehicle body.

[0071] In this embodiment, the included angle is set to 92° instead of 90° because when the fastener is used in a place where it is frequently disassembled, the frequent disassembly will cause the fastener to deform, so a deformation allowance is left.

[0072] When it is necessary to disassemble the parts during the later debugging, since the protrusions 1-4 are distributed along the spiral line, the fastener 1 can be unscrewed by using a tool to rotate the fastener 1 through the mounting slot 1-3, thus realizing the separation of the parts from the car body.

[0073] When using the fastening assembly of this embodiment, only a load along the axis of the rod needs to be applied when assembling the parts, without having to rotate the fastener multiple times, which shortens the assembly time and improves production efficiency.

[0074] In one practical application of this embodiment, such as Figure 10As shown, to install the roof rack 4, after assembling the fastener 2 and the clamping part 2, fix the fastener 2 to the bottom surface of the roof sheet 5 at the set position, place the roof rack 4 so that the fixing hole of the roof rack 4 is aligned with the fixing channel of the clamping part 2, then align the rod 1-2 of the fastener 1 with the fixing channel, apply a downward load along the axis of the rod 1-2 to the head 1-1, insert the rod 1-2 into the fixing channel until the head 1-1 presses the roof rack 4 tightly onto the upper surface of the roof sheet 5.

[0075] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fastening assembly for assembling automotive parts, characterized in that, include: Fastener: includes a head and a shank located on the bottom surface of the head, the shank having at least one protrusion distributed along a helical line, the lower surface of the protrusion being an inclined surface sloping away from the head; Clamping component: The internal part is provided with a fixing channel that matches the rod. The fixing channel is provided with a spiral groove that matches the protrusion. The clamping component is composed of multiple clamping parts arranged in a ring. The outer periphery of the clamping component is provided with an annular elastic element to press the multiple clamping parts together. After the protrusion engages with the spiral groove, the fastener can rotate to unscrew from the clamp. Fastener: It can be fixed to the vehicle body and has a groove that matches the clamping part so that after the clamping part and the fastener are assembled, multiple clamping parts can move radially along the clamping part. The angle between the upper surface of the protrusion and the axis of the rod is 90°-95°; The clamping part includes a clamping body and a sliding body located on top of the clamping body. Correspondingly, the groove on the fixing member includes a first groove that matches the sliding body and a second groove that matches the clamping body. The clamping body can pass through the fixing member through the second groove. The clamping member consists of two clamping parts. Correspondingly, the fixing member is provided with an elongated groove to form a first sliding groove. The sliding body of the clamping part is slidably connected to the groove surface of the elongated groove. The bottom groove surface of the elongated groove is provided with an elongated through hole. The clamping body of the clamping part is slidably connected to the hole wall of the elongated through hole.

2. A fastening assembly for assembling automotive parts as described in claim 1, characterized in that, The fastener is equipped with a fixing post and can be fixed to the vehicle body through the fixing post.

3. A fastening assembly for assembling automotive parts as described in claim 2, characterized in that, The fixing post is a threaded post, which can be fixedly connected to the vehicle body by a fixing nut pre-installed on the vehicle body.

4. A fastening assembly for assembling automotive parts as described in claim 1, characterized in that, The upper surface of the head is provided with a rotating groove to facilitate the rotation of the fastener using a tool.

5. A fastening assembly for assembling automotive parts as described in claim 1, characterized in that, The outer circumferential surface of the clamping part is provided with an annular groove, and the annular elastic element is sleeved on the outer circumference of the clamping part through the circumferential groove.

6. A fastening assembly for assembling automotive parts as described in claim 1, characterized in that, The annular elastic element has a notch.

7. A method of operating the fastening assembly for assembling automotive parts according to any one of claims 1-6, characterized in that: After the fastener rod passes through the component to be fixed, it is aligned with the fixing channel of the clamping component. The clamping component and the fixing component are assembled in advance, and the fixing component is fixed to the vehicle body. A load is applied to the rod along its axis. The rod is inserted into the fixing channel. Under the action of the protrusion, multiple clamping parts overcome the elastic force of the annular elastic element and move in the radial direction of the clamping parts, so that the rod moves in the fixing channel until the head presses the part to be fixed onto the car body. Under the action of the elastic force of the annular elastic element, the protrusion is inserted into the spiral groove, and multiple clamping parts clamp the rod, thus completing the fixing of the part onto the car body.

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