A multi-petal shaped clasp

Abstract

The application discloses a multi-petal buckle, comprising a handle, an umbrella-shaped part, the umbrella-shaped part comprising a connecting sheet fixed to the lower end of the handle and a lip arranged on the outer edge of the connecting sheet, the lip is inclined downward to form a slope structure, a petal-shaped part, the petal-shaped part comprising a stem and a plurality of petals, the stem is fixedly connected with the center of the lower surface of the connecting sheet, the plurality of petals are fixedly connected around the surface of the stem, the petals are tapered from top to bottom, and the upper end of the petals is spaced from the lower surface of the connecting sheet. The multi-petal buckle is provided, and the stress points of the buckle are more dispersed during installation, the stress is more uniform, and the breakage and other conditions are avoided.

Description

Technical Field

[0001] This invention relates to the field of automotive interior and exterior fasteners, and more particularly to a multi-lobed snap fastener. Background Technology

[0002] Among existing snap-fit ​​structures, a common design is a solid pointed head with a partially hollowed-out interior. This type of snap-fit ​​has a relatively simple overall structure and is usually molded in one piece using injection molding. Its main elastic function is achieved by the elastic deformation of the hollowed-out area during installation and the shape rebound after installation, thereby cooperating with the corresponding slots or holes to achieve snap-fit ​​connection.

[0003] However, the existing structure has significant shortcomings in practical use: First, relying solely on the thin-walled structure formed by hollowing out solid pointed plastic to achieve the compression deformation during the snap-fit ​​assembly process, the material used is usually rigid plastic to ensure the stability of the snap-fit. Furthermore, the hollowed-out thin wall lacks an elastic buffer structure, resulting in weak overall elasticity of the snap-fit ​​and very limited allowable deformation, with deformation occurring only in the remaining hollowed-out area. During product assembly and disassembly, when the snap-fit ​​is subjected to external pressure or pulling, the stress concentrates at the hollowed-out thin wall, failing to distribute the force evenly. This makes it more prone to breakage during installation and disassembly, affecting product stability and increasing production rework and product replacement costs. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-lobed buckle that, during installation, distributes the force points more evenly and avoids breakage.

[0005] The technical solution adopted by the multi-lobed buckle disclosed in this invention is: A multi-lobed buckle, including a handle; The umbrella-shaped part includes a connecting piece fixed to the lower end of the handle and a lip provided on the outer edge of the connecting piece, the lip facing outward and sloping downward to form a ramp structure; The petal-shaped portion includes a main stem and several petals. The main stem is fixedly connected to the center of the lower surface of the connecting piece. Several petals are fixedly arranged around the surface of the main stem. The petals are tapered from top to bottom, and there is a gap between the upper end of the petals and the lower surface of the connecting piece.

[0006] As a preferred embodiment, the handle includes an upper platform and a connecting post, the connecting post being disposed between the upper platform and the connecting piece, and the two ends of the connecting post being fixedly connected to the upper platform and the connecting piece respectively, and the upper platform having a blind hole at its center, the blind hole extending into the interior of the connecting post.

[0007] As a preferred embodiment, the upper ends of several of the lobes are all bent in the same direction, and the number of lobes is at least three.

[0008] As a preferred embodiment, the outer thickness of the petal is greater than the inner thickness.

[0009] As a preferred embodiment, the device also includes a soft rubber sealing ring, which has an annular structure and is fixed to the outer edge of the lip. The soft rubber sealing ring forms a U-shaped wrapping structure with the upper and lower surfaces of the lip.

[0010] As a preferred embodiment, the device also includes a hoop, wherein the surface of the petal is provided with a groove, the groove is located on the surface of the lower end of the petal, and the interior of the groove extends to the upper end of the petal in an inclined structure, and the hoop is fitted into the groove of multiple petals.

[0011] As a preferred embodiment, the hoop surface is provided with a plurality of elastic claws, wherein the elastic claws are disposed on the upper surface of the hoop, or the elastic claws are disposed on the lower surface of the hoop, or the elastic claws are disposed on both the upper and lower surfaces of the hoop.

[0012] As a preferred embodiment, the elastic claws are spaced apart on the outer edge of the hoop, and the elastic claws are inclined outward.

[0013] The beneficial effects of the multi-lobed buckle disclosed in this invention are as follows: the handle can be used for connecting other components or for handheld use. During installation and insertion, the lower end of the lobed portion is aligned with the sheet metal hole. Since several lobes are fixed around the main surface and gradually taper from top to bottom, when the buckle enters the sheet metal hole, the lobes first provide a central guiding function. During the process of the buckle entering the sheet metal hole, the lobes deform and contract inward. After the outer side of the lobes passes through the sheet metal hole, they quickly rebound and extend. At this time, the upper end of the lobes contacts the lower edge of the sheet metal hole, providing longitudinal support for the sheet metal hole and preventing the buckle from coming out of the sheet metal hole. By utilizing the structure of several lobes, the structural stress of the corresponding lobed portion is dispersed, resulting in greater deformation and better elastic rebound performance. This effectively avoids stress concentration problems and prevents breakage or fracture during disassembly and assembly. In addition, it can also improve the uniformity of buckle locking, increase the clamping force, and improve the connection firmness. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the multi-lobed buckle of the present invention.

[0015] Figure 2 This is a side view structural schematic diagram of an embodiment 1 of the multi-lobed buckle of the present invention.

[0016] Figure 3 yes Figure 2 Sectional view of AA.

[0017] Figure 4 yes Figure 2A cross-sectional view of BB.

[0018] Figure 5 This is a schematic diagram of the structure with different numbers of petals in Embodiment 1 of the multi-petal buckle of the present invention.

[0019] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the multi-lobed buckle of the present invention.

[0020] Figure 7 This is a schematic diagram of the structure of embodiment 3 of the multi-lobed buckle of the present invention.

[0021] Figure 8 This is a schematic diagram of the structure combining embodiments 2 and 3 of the present invention of a multi-lobed buckle.

[0022] Figure 9 yes Figure 8 A sectional view during the structural insertion process.

[0023] Figure 10 This is a schematic diagram of another embodiment of the hoop of the multi-lobed buckle of the present invention. Detailed Implementation

[0024] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings: Example 1 Please refer to Figures 1 to 4 A multi-lobed buckle includes a handle 10, which includes an upper platform 11 and a connecting post 12. The connecting post 12 is disposed between the upper platform 11 and the connecting piece 21, and both ends of the connecting post 12 are fixedly connected to the upper platform 11 and the connecting piece 21, respectively. The upper platform 11 has a blind hole 13 in the center, which extends into the interior of the connecting post 12. By hollowing out the upper platform 11 to form the blind hole 13, materials can be saved, the plastic wall thickness can be made more uniform, and the space required for installation and fixing can be utilized during other assembly and use.

[0025] The umbrella-shaped part 20 includes a connecting piece 21 fixed to the lower end of the handle 10, and a lip 22 disposed on the outer edge of the connecting piece 21. The lip 22 faces outward and slopes downward to form a ramp structure.

[0026] The umbrella-shaped part 20 is elastic and can be pressed against the upper surface of the sheet metal hole 60 after the buckle is installed into the sheet metal hole 60. At this time, the lip 22 structure with slope will deform, attach and press against the upper surface of the sheet metal hole 60 to prevent the buckle from moving around on the sheet metal surface and causing abnormal noise.

[0027] The petal-shaped portion 30 includes a main stem 31 and several petals 32. The main stem 31 is fixedly connected to the center of the lower surface of the connecting piece 21. Several petals 32 are fixed around the surface of the main stem 31. The petals 32 are gradually tapered from top to bottom. There is a gap between the upper end of the petals 32 and the lower surface of the connecting piece 21.

[0028] The upper ends of several lobes 32 are all bent in the same direction, which avoids the problem of the lobes 32 shrinking towards the axis due to the squeezing force of the sheet metal hole 60 when inserted into the sheet metal hole 60. Instead, they deform in the tangential direction at the same time, making the deformation easier and more flexible.

[0029] Please refer to Figure 4 and Figure 5 The number of lobes 32 varies from 3 to 6, or even more, depending on the design requirements. The more lobes 32 there are, the greater the force will be. However, the spacing between each lobe 32 will be reduced, resulting in less space for deformation. Therefore, it is necessary to set the number of lobes 32 according to the specific design requirements.

[0030] Furthermore, the outer thickness of the flap 32 is greater than the inner thickness, which allows for better contact with the inner wall of the sheet metal hole 60. It also better guides the inner side of the flap 32 to bend and deform, making it easier to insert into the sheet metal hole 60.

[0031] Example 2 Please refer to Figure 6 and Figure 9 It also includes a soft rubber sealing ring 40, which has a ring-shaped structure. The soft rubber sealing ring 40 can be wrapped and fixed to the outer edge of the lip 22 by secondary injection molding to form a physical bond. The soft rubber sealing ring 40 and the upper and lower surfaces of the lip 22 form a U-shaped wrapping structure. After being installed in the sheet metal hole 60, the buckle with the soft rubber sealing ring 40 also has a sealing and waterproofing effect. The soft rubber sealing ring 40 replaces the lip 22 of the umbrella-shaped part 20 and is attached to the upper surface of the sheet metal hole 60. Since the soft rubber sealing ring 40 is made of soft material, when the soft rubber sealing ring 40 is attached to the upper surface of the sheet metal hole 60, the soft rubber sealing ring 40 will automatically deform and adhere to the upper surface of the sheet metal hole 60, thus producing a sealing effect.

[0032] Example 3 Please refer to Figure 7 and Figure 8 It also includes a hoop 50, and the surface of the petal 32 is provided with a groove 321. The groove 321 is located on the surface of the lower end of the petal 32, and the interior of the groove 321 has a sloping structure extending to the upper end of the petal 32. The hoop 50 is fitted in the groove 321 of the multiple petals 32.

[0033] Please refer to Figure 9Since the surface of the flap 32 is in direct contact with the sheet metal hole 60, and the sheet metal hole 60 has not undergone targeted grinding and polishing in some cases, burrs may exist on its inner wall and edges. This can cause the surface of the flap 32 to be scratched during insertion, potentially leading to installation difficulties and affecting the fastening effect of the buckle. Therefore, a hoop 50 structure is added to the buckle surface through the groove 321, so that when the buckle is installed with the sheet metal hole 60, the original surface of the flap 32 is protected. The direct contact with the sheet metal edge will change. After adding the hoop 50, the surface of the flap 32 will no longer directly contact the upper edge of the sheet metal hole 60. Instead, it will be attached to the periphery of the upper edge of the sheet metal hole 60 through the hoop 50. The surface of the flap 32 will gradually enter the sheet metal hole 60 along the inner wall of the hoop 50, thereby preventing the surface of the flap 32 from being scratched by the upper edge of the sheet metal hole 60. The inner wall of the matching hoop 50 can be chamfered, polished, etc. to form a smoother surface, thereby preventing wear on the flap 32.

[0034] After the buckle is installed into the sheet metal hole 60, the hoop 50 is pushed into the gap between the connecting piece 21 of the umbrella-shaped part 20 and the petal 32, which serves to store it and avoid interference with the insertion of the buckle.

[0035] Please refer to Figure 7 and Figure 9 The hoop 50 has a plurality of elastic claws 51 on its surface. The elastic claws 51 are located on the upper surface of the hoop 50, or on the lower surface of the hoop 50, or on both the upper and lower surfaces of the hoop 50. The elastic claws 51 are spaced apart on the outer edge of the hoop 50 and are inclined outward.

[0036] The upper elastic claw 51 and the lower elastic claw 51 of the hoop 50 can undergo elastic deformation. The elastic claw 51 can isolate the connecting piece 21 of the umbrella-shaped part 20 or the sheet metal surface, and act as a gasket or elastic support to prevent the buckle from shifting and making abnormal noise. Depending on the design requirements, one or both of the upper elastic claw 51 and the lower elastic claw 51 of the hoop 50 can be retained.

[0037] This invention provides a multi-lobed buckle with a handle for connecting other components or for handheld use. During installation and insertion, the lower end of the lobes is aligned with the sheet metal hole. Since several lobes are fixed around the main surface and gradually taper from top to bottom, they provide a central guiding function when the buckle enters the sheet metal hole. As the buckle enters the hole, the lobes deform and contract inwards. After the outer side of the lobes passes through the hole, they quickly rebound and extend. At this point, the upper end of the lobes contacts the lower edge of the hole, providing longitudinal support and preventing the buckle from coming out. The multi-lobed structure disperses the stress on the corresponding lobes, resulting in greater deformation and superior elastic recovery, effectively avoiding stress concentration and preventing breakage or cracking during assembly and disassembly. Furthermore, it improves the uniformity of buckle locking, increases clamping force, and enhances connection stability.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A multi-lobed buckle, characterized in that, Including the handle; The umbrella-shaped part includes a connecting piece fixed to the lower end of the handle and a lip provided on the outer edge of the connecting piece, the lip facing outward and sloping downward to form a ramp structure; The petal-shaped portion includes a main stem and several petals. The main stem is fixedly connected to the center of the lower surface of the connecting piece. Several petals are fixedly arranged around the surface of the main stem. The petals are tapered from top to bottom, and there is a gap between the upper end of the petals and the lower surface of the connecting piece.

2. The multi-lobed buckle as described in claim 1, characterized in that, The handle includes an upper platform and a connecting post. The connecting post is disposed between the upper platform and the connecting piece, and both ends of the connecting post are fixedly connected to the upper platform and the connecting piece, respectively. A blind hole is provided in the center of the upper platform, and the blind hole extends into the interior of the connecting post.

3. A multi-lobed buckle as described in claim 2, characterized in that, The upper ends of several of the lobes are all bent in the same direction, and the number of lobes is at least three.

4. The multi-lobed buckle as described in claim 1, characterized in that, The outer thickness of the petal is greater than the inner thickness.

5. The multi-lobed buckle as described in claim 1, characterized in that, It also includes a soft rubber sealing ring, which has a ring-shaped structure and is fixed to the outer edge of the lip. The soft rubber sealing ring forms a U-shaped wrapping structure with the upper and lower surfaces of the lip.

6. A multi-lobed buckle as described in any one of claims 1-5, characterized in that, It also includes a hoop, wherein the surface of the petal has grooves, the grooves are located on the surface of the lower end of the petal, and the interior of the grooves extends to the upper end of the petal in an inclined structure, and the hoop is fitted in the grooves of multiple petals.

7. A multi-lobed buckle as described in claim 6, characterized in that, The hoop surface is provided with a plurality of elastic claws, which are disposed on the upper surface of the hoop, or on the lower surface of the hoop, or on both the upper and lower surfaces of the hoop.

8. A multi-lobed buckle as described in claim 7, characterized in that, The elastic claws are spaced apart on the outer edge of the hoop, and the elastic claws are inclined outward.

Images