CN115507098A

CN115507098A - Fastening clip

Info

Publication number: CN115507098A
Application number: CN202110692368.9A
Authority: CN
Inventors: 徐皆隆
Original assignee: Illinois Tool Works Inc
Current assignee: Illinois Tool Works Inc
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-12-23

Abstract

The application provides a fastening clip, comprising a fastening pin and a fastening sleeve, wherein the fastening pin (110) is provided with a head part (211) and a pin part (212), and the pin part (212) extends downwards from the head part (211); the fastening sleeve (120) comprises a base (301) and at least one pair of retaining wings (311, 312), wherein the base (301) is provided with a hole (305), the pin part (212) can be detachably inserted into the hole (305), the at least one pair of retaining wings (311, 312) extend downwards from the lower surface of the base (301) and surround the hole (305), and the lower parts of the at least one pair of retaining wings (311, 312) are provided with retaining parts (330) formed by protruding outwards. The fastening clip in this application can adapt to narrow and small installation space.

Description

Fastening clip

Technical Field

The present application relates to a fastening clip, and more particularly to a fastening clip for fastening two or more panels.

Background

In industrial applications, such as the automotive industry, it is sometimes desirable to fixedly attach two or more panels using a fastening clip. One of these solutions is to make a hole in the panels to be joined and to insert the fastening clip into the hole in the panels to be joined. Wherein the tightening clamp has an elastic fixing member which is in a contracted state before insertion into the boards to be joined, and when the boards to be joined are fully inserted, the elastic fixing member is expanded outward so as to abut against the boards, thereby fixedly joining the two or more boards.

Disclosure of Invention

The application provides a pair of easily install and firm fastening clip, fastening clip includes:

a securing pin having a head and a pin portion extending downwardly from the head; a fastening sleeve including a base having a hole thereon, the pin portion being detachably inserted into the hole of the base, and at least one pair of retaining wings extending downward from a lower surface of the base and arranged around the hole, a lower portion of the at least one pair of retaining wings having a retaining portion formed to protrude outward; wherein the fastening sleeve can be inserted into the hole of the component to be connected, the outer contour of the lower part of the fastening pin matching the contour of the inner walls of the at least one pair of retaining wings in the circumferential direction, so that when the fastening pin is mounted in place in the fastening sleeve, the outer surface of the lower part of the fastening pin abuts against the inner surface of the at least one pair of retaining wings of the fastening sleeve, thereby preventing the at least one pair of retaining wings from deflecting inwards.

The fastening clip as described above, the holding portion has a holding portion top portion located on a side of the holding portion away from the central axis of the fastening clip, and in the free state of the fastening sleeve, the size of the outside of the holding portion top portion is larger than the size of the fastening clip mounting hole of the member to be connected.

The above-described fastening clip, wherein the height of the holding portion is not more than 2mm.

As described above, the holding portion includes the holding portion upper inclined surface extending in a direction away from the holding wing and inclined downward, and the holding portion lower inclined surface extending in a direction away from the holding wing and inclined upward.

In the fastening clip, the at least one pair of retaining wings are provided with openings, and the outer side of the fastening pin is provided with protrusions which can enter the openings when the fastening pin is mounted in place in the fastening sleeve.

According to the fastening clip, the pin part is cylindrical and comprises a window and an elastic arm, and the bottom of the elastic arm is connected with the lower edge of the window, so that the elastic arm can move in the window.

The fastening clip as described above, the base portion has a recess formed by recessing downward from an upper surface of the base portion, and the head portion can enter the recess so that the head portion is flush with the base portion when the fastening pin is mounted in place in the fastening sleeve.

The fastening clip as described above, the recess of the fastening sleeve has a main body portion and a pair of side portions, the pair of side portions extending from the main body portion toward an outer edge of the base portion, the main body portion having a shape matching a shape of the head portion, the head portion of the fastening pin having a pair of grooves formed by being recessed upward from a lower surface of the head portion, the grooves having a depth smaller than a thickness of the head portion, one end of the grooves extending through an outer edge of the head portion, the grooves being alignable with the pair of side portions.

The fastening clip as described above, the at least one pair of retaining wings includes two retaining wings, which are symmetrically disposed with a certain interval.

The fastening clip as described above, the inner side walls of the at least one pair of retaining wings extend perpendicular to the extending direction of the base.

The height of the holding part of the fastening clip is small, and the fastening clip can adapt to the condition that the installation space at the lower part of the component is small when a plurality of components are connected. And the fastening clip of the present application is easy to install and remove.

Drawings

FIG. 1A is a perspective view of a fastening clip of the present application;

FIG. 1B is a perspective view of the fastening clip of FIG. 1A at another angle;

FIG. 1C is an exploded view of the fastening clip of FIG. 1A;

FIG. 2A is a perspective view of the fastening pin of FIG. 1B;

FIG. 2B is a side view of the fastening pin of FIG. 2A;

FIG. 2C is a bottom view of the fastening pin;

FIG. 2D isbase:Sub>A cross-sectional view of the fastening pin of FIG. 2C taken along line A-A;

FIG. 3A is a perspective view of the fastener sleeve;

FIG. 3B is a side view of the fastening sleeve of FIG. 3A;

figure 3C is a cross-sectional view of the adaptor sleeve of figure 3B taken along line B-B,

FIG. 4 shows two boards to be joined;

FIG. 5 is a cross-sectional view of the fastener sleeve into two panels to be joined;

fig. 6 is a cross-sectional view of the fastening clip 100 into two panels to be joined.

Detailed Description

Various embodiments of the present invention will now be described with reference to the accompanying drawings, which form a part hereof. It should be understood that although directional terms, such as "front," "rear," "upper," "lower," "left," "right," etc., may be used herein to describe various example features and elements of the disclosure, these terms are used herein for convenience of description and are intended to be based on the example orientations shown in the figures. Because the embodiments disclosed herein can be arranged in a variety of orientations, these directional terms are used for purposes of illustration only and are not to be construed as limiting. Wherever possible, the same or similar reference numbers used in this application refer to the same or like parts.

Fig. 1A is a perspective view of a fastening clip of the present application, fig. 1B is a perspective view of the fastening clip of fig. 1A at another angle, fig. 1C is an exploded view of the fastening clip of fig. 1A, and fig. 1A-1C show the external configuration of the fastening clip, where fig. 1A is a view from a top-down perspective of the fastening clip, and fig. 1B is a view from a bottom-up perspective of the fastening clip. As shown in fig. 1A-1C, the fastening clip 100 is used to fasten two or more overlapping panels. The fastening clip 100 includes a fastening pin 110 and a fastening sleeve 120. The fastening clip 100 has a central axis C. The fastening pin 110 can move in the direction of the central axis C relative to the fastening sleeve 120 to be coupled with or decoupled from the fastening sleeve 120. Fig. 1A shows a state in which the fastening pin 110 is inserted into a position in the fastening sleeve 120, at which time the fastening pin 110 is coupled with the fastening sleeve 120. Applying a pulling force to the fastening pin 110 shown in fig. 1A enables the fastening pin 110 to be pulled out of the fastening sleeve 120, so that the fastening pin 110 can be separated from the fastening sleeve 120. When the fastening clip 100 fastens at least two plates to be fastened, the fastening sleeve 120 is inserted into the hole of the at least two plates to be fastened, and then the fastening pin 110 is inserted into the fastening sleeve 120 and is installed in place, so that the at least two plates are fastened by the fastening clip 100. The structure and operation of the fastening pin 110 and the fastening sleeve 120 will be described in detail below.

Fig. 2A isbase:Sub>A perspective view of the fastening pin of fig. 1B, fig. 2B isbase:Sub>A side view of the fastening pin of fig. 2A, fig. 2C isbase:Sub>A bottom view of the fastening pin, and fig. 2D isbase:Sub>A sectional view of the fastening pin taken alongbase:Sub>A-base:Sub>A line as in fig. 2C. As shown in fig. 2A to 2D, the fastening pin 110 includes a head portion 211 and a pin portion 212. The head 211 is substantially flat and has an upper surface 215 and a lower surface 216, and the pin portion 212 is formed extending downward from the lower surface 216 of the head 211. Wherein the head 211 has a size larger than that of the pin 212 so that the fastening pin 110 has a substantially open umbrella shape.

The head 211 has a longitudinal direction L, a width direction W, and a thickness direction D. The head 211 is generally oblong in shape, having a pair of

sides

225 and 226 parallel to each other and extending along the length direction L, and a pair of

rounded sides

225 and 226 connecting the

sides

225 and 226. The head portion 211 has a pair of

grooves

236 and 237 formed from the lower surface 216 to be recessed inward in the thickness direction of the head portion, and the depth of the

grooves

236 and 237 in the thickness direction D is smaller than the thickness of the head portion 211, so that the

grooves

236 and 237 are below the upper surface 215 of the head portion 211 with a space therebetween. The

grooves

236 and 237 extend lengthwise and have respective ends extending outwardly past the outer edge of the head 211 to form a pair of

notches

238 and 239 in the radiused

sides

225 and 226. The respective inner sides of the

grooves

236 and 237 extend to the outer side of the pin portion 212 or are spaced apart from the pin portion 212.

The pin portion 212 extends perpendicular to the head portion 211 in an axial direction, the pin portion 212 being generally cylindrical, the inner side wall of the pin portion 212 enclosing the chamber 208. In one embodiment of the present application, the chamber 208 extends through the lower surface of the pin portion 212 in the axial direction of the fastening clip 100 with a space between the top 281 of the chamber 208 and the lower surface of the head 211, so that the upper portion of the pin portion 212 has a solid portion. In other embodiments of the present application, the top of the chamber 208 may be flush with the lower surface 216 of the head 211, or the chamber 208 extends through the upper surface 215 of the head 211.

The pin portion 212 has a pair of oppositely disposed

windows

231 and 232 and a pair of

resilient arms

233 and 234.

Windows

231 and 232 are located below the top 281 of the chamber 208, and the

windows

231 and 232 can communicate the chamber 208 with the outside. A pair of

elastic arms

233 and 234 are respectively provided in the

windows

231 and 232 and can move within a certain range with respect to the

windows

231 and 232.

The

resilient arms

233 and 234 are symmetrical, and the structure of the resilient arm 234 will be described below by taking the resilient arm 234 as an example. The spring arm 234 is disposed in the window 232 with the bottom 247 of the spring arm 234 attached to the lower edge 249 of the window 232 and the two sides and top of the spring arm 234 spaced from the edge of the window 231 so that the spring arm 234 is able to move within the window 232 along the attachment of the bottom 247 of the spring arm 234 to the lower edge 249 of the window 232.

The upper portion of the resilient arm 234 has a protrusion 252, and the protrusion 252 is formed by an outer surface of the resilient arm 234 protruding outward. The projection 252 has a projection upper inclined surface 263 and a projection lower inclined surface 264, the projection upper inclined surface 263 extending obliquely outward (i.e., away from the central axis of the clip) and downward (i.e., away from the head 211) from the spring arm 234, and the projection lower inclined surface 264 extending obliquely outward and upward from the spring arm 234. Wherein the angle of inclination of the projection upper inclined surface 263 with respect to the central axis C of the fastening clip 100 is greater than the angle of inclination of the projection lower inclined surface 264 with respect to the central axis C of the fastening clip 100. That is, the convex upper inclined surface 263 is more gentle than the convex lower inclined surface 264 with respect to the horizontal direction. The tendency of the outer surface of the portion of the resilient arm 234 below the projection 252 to extend coincides with the tendency of the outer surface of the pin portion 212 to extend. That is, the radial cross-section of the portion of the outer surface of the resilient arm 234 below the projection 252 is arcuate and is on the same circumference as the radial cross-section of the outer surface of the pin portion 212. In one embodiment of the present application, the proximal end of the convex upper ramp 263 of the convex portion 252 (i.e., the top of the convex upper ramp 263) is spaced a small distance from the top of the resilient arm 234. In other embodiments of the present application, the proximal end of the convex upper chamfer 263 of the convex portion 252 may be flush with the top of the chamfer 263.

The elastic arm 234 has a certain length in a circumferential direction so that the elastic arm 234 has a certain strength. In one embodiment of the present application, the length of the resilient arm 234 in the circumferential direction is not less than 1/8 of the circumference of the pin portion 212.

The resilient arms 233 are identical in structure to the resilient arms 234 and are symmetrical with respect to the central axis C. The elastic arm 233 has a convex portion 251. In other embodiments of the present application, the elastic arms and the windows may be plural, and the plural elastic arms are uniformly distributed in the circumferential direction.

In the present application, the outer profile of the pin portion 212 is substantially cylindrical, but in other embodiments, the outer profile of the pin portion 212 may also be prismatic.

Fig. 3A is a perspective view of the fastening sleeve 120, fig. 3B is a side view of the fastening sleeve 120 of fig. 3A, fig. 3C is a sectional view of the fastening sleeve of fig. 3B taken along the line B-B, and fig. 3A-3C illustrate the structure of the fastening sleeve 120. As shown in fig. 3A-3C, the fastening sleeve 120 includes a base 301 and a pair of retaining

wings

311 and 312. The base 301 is generally disc-shaped and has an upper surface 302 and a lower surface 303. A pair of retaining

wings

311, 312 are formed extending downwardly from the lower surface 303 of the base 301. The base 301 has a hole 305 extending through the upper surface 302 and the lower surface 303 of the base 301, the hole 305 being centered on the central axis C of the fastening clip 100. The base 301 also has a recess 309 formed by being recessed downward from the upper surface 302 of the base, the depth of the recess 309 approximately corresponding to the thickness of the head 211 of the fastening pin 110. The recess 309 has a main body portion 391 and a pair of

side portions

392 and 393, the main body portion 391 being generally oblong in shape matching the shape of the head portion 211 of the fastening pin 110, such that the main body portion 391 also has a pair of arcuate sides corresponding to the arcuate sides of the head portion 211, and the upper surface 215 of the head portion 211 is generally flush with the upper surface 302 of the base 301. The centers of the central body portions 391 of the holes 305 coincide. A pair of

sides

392 and 393 respectively extend from the body toward the outer edge of the base 301 and through the outer edge of the base 301. A pair of

side portions

392 and 393 are provided extending outwardly from a pair of arcuate sides of the body portion 301, respectively. The pair of

sides

392 and 393 are positioned to align with the

recesses

236 and 237 of the securing pin 110.

When the fastening pin 110 is mounted in place in the fastening sleeve 120, the lower surface 216 of the head 211 of the fastening pin 110 abuts against the bottom of the recess 309, the

grooves

236 and 237 form an operating space between the head 211 of the fastening pin 110 and the recess 309, and the

notches

238 and 239 of the head 211 form an operating space opening, so that a tool can be inserted into the operating space from the operating space opening, thereby extracting the fastening pin 110. When it is necessary to remove the fastening clip 100 from the fastened plate, the fastening pin 110 can be pulled upward by inserting an operating tool into the

grooves

236 and 237 of the fastening pin 110 from the opening of the operating space.

The pair of retaining

wings

311 and 312 are identical in structure and are symmetrically disposed with respect to the central axis C of the fastening clip 100. A pair of holding

wings

311 and 312 are formed to extend downward substantially in a direction perpendicular to the base 301. The pair of holding

wings

311 and 312 substantially enclose a cylindrical shape, that is, in a cross section in the radial direction, both the outline of the outer surface and the outline of the inner surface of the pair of holding

wings

311 and 312 are circular. The inner walls of the pair of holding

wings

311 and 312 enclose a fastening sleeve receiving cavity 335, and the shape of the fastening sleeve receiving cavity 335 is matched to the shape of the fastening pin 110 so that the fastening pin 110 can be inserted into the fastening sleeve 120. A certain distance is provided between the pair of holding

wings

311 and 312 so that the pair of holding

wings

311 and 312 has a space for deformation. In the circumferential direction, the spacing between the retaining

wings

311 and 312 needs to satisfy the following design requirements: the holding

wings

311 and 312 do not interfere when the holding

wings

311 and 312 are inserted into holes of the members to be connected and elastically deformed. Since the holding

wings

311 and 312 have a symmetrical structure, the specific structure of the first pair of holding

wings

311 and 312 will be described below by taking the holding wing 311 as an example.

The retaining wing 311 has a retaining wing upper portion 321 and a retaining wing lower portion 322, the retaining wing upper portion 321 being located at a proximal end of the retaining wing 311 close to the base 301, and the retaining wing lower portion 322 being located at a distal end of the retaining wing 311 remote from the base 301. The upper retaining wing portions 321 are provided with openings 333, the openings 333 being substantially elongated in the circumferential direction and spaced apart from the lower surface 303 of the base 301. The size of the opening 333 is slightly larger than the size of the protrusion 252 of the resilient arm of the fastening pin 110 so that the protrusion 252 can be received in the opening 333.

The retaining wing lower portion 322 has a retaining portion 330 formed to protrude outward, the retaining portion 330 has a retaining portion upper slope 362 and a retaining portion lower slope 363, the retaining portion upper slope 362 extends obliquely outward (i.e., away from the central axis of the fastening clip) and downward (i.e., away from the base 301) from the retaining wing 311, and the retaining portion lower slope 363 extends obliquely outward and upward from the retaining wing 311. Wherein the angle of inclination of the holder upper inclined surface 362 with respect to the central axis C of the fastening clip 100 is greater than the angle of inclination of the holder lower inclined surface 363 with respect to the central axis C of the fastening clip 100. That is, the holding portion upper slope 362 is gentler than the holding portion lower slope 363 with respect to the horizontal direction. The junction of the retainer upper ramp 362 and the retainer lower ramp 363 forms a retainer top 364. The retaining portion top 364 retains the portion of the portion 330 that is farthest from the central axis C of the fastening clip 100. The distance that retaining portion tip 364 extends outward from the face in which retaining wing upper portion 321 is located is referred to as retaining portion width 380, and the distance from the outer surface of retaining wing upper portion 321 to the central axis maintains wing radius 381. The retaining portion width 380 needs to have a certain width to ensure that the fastening clip 100 is not easily removed from the hole of the member to be connected. The width of the retention portion width 380 is related to the thickness of the connected components of the fastening clip 100, and the thicker the thickness of the components to which the fastening clip 100 needs to be connected, the greater the amount of deformation allowed for the

retention wings

311 and 312, and the greater the width of the retention portion width 380 may be. In one embodiment of the present application, the overall thickness of the components to which the clip 100 is to be attached is 4mm, and the width 380 of the retention portion is 0.4 to 0.6mm.

The holding part lower inclined surface 363 extends to the bottom of the holding wing 311 so that the lower end of the holding wing 311 forms a guide part having a gradually reduced outer diameter, which can guide the fastening clip 100 into the hole of the member to be connected. In the axial direction of the fastening clip 100, the height of the holding portion 330 is not higher than 2mm, so that the fastening clip 100 can be adapted to a narrow installation space without interfering with a structure below the member to be connected. In one embodiment of the present application, the distance from the upper portion 321 of the holding wing of the fastening sleeve 120 to the central axis is 4mm to 5mm, the height of the fastening sleeve 120 is 8 mm to 10mm, the width of the holding portion is 0.4mm to 0.6mm, and the height of the holding portion is 1mm to 2mm.

Similarly, the retention wing 312 also has an opening 334 and a retention portion 340, the retention portion 340 having a retention portion upper ramp 372 and a retention portion lower ramp 373, and a retention portion top 374.

In one embodiment of the present application, the inner side wall of the retaining wing 311 extends downward perpendicular to the base 301, and the fastening sleeve receptacle 335 is substantially cylindrical to match the shape of the pin portion 212 of the fastening pin 110. In other embodiments, the shape of the fastening socket receiving chamber 335 may be changed to match the shape of the pin portion 212 of the fastening pin 110 when the pin portion of the fastening pin 110 has other shapes, for example, the pin portion of the fastening pin 110 may have a tapered shape that gradually decreases from top to bottom. In other embodiments of the present application, the retaining wings may be provided in plurality, and a space may be provided between adjacent retaining wings to facilitate deformation of the retaining wings. The plurality of holding wings are uniformly distributed in the circumferential direction.

Fig. 4 shows two boards to be connected. As shown in fig. 4, the first plate 401 and the second plate 402 have

holes

411 and 412, respectively, and when it is desired to fasten the

plates

401 and 402, the

holes

411 and 412 are aligned, the fastening sleeve 120 of the fastening clip 100 of fig. 1A is inserted into the

holes

411 and 412, and the fastening pin 110 is inserted into the fastening sleeve 120, so that the

plates

401 and 402 can be fastened. Wherein the diameters of the

holes

411 and 412 are set to be equal to or slightly larger than the outer diameter of the circumference where the outer surface of the holding wing upper portion 321 of the fastening sleeve 120 is located, and smaller than the outer diameter of the circumference where the holding portion top 364 of the holding portion 330 is located. The hole 412 of the second plate 402 located below is matched to the dimensions of the fastening clip 100, so that the retaining part 330 of the fastening sleeve 120 can abut against the lower edge 419 of the hole 412 and the fastening pin 110 abuts against the inner wall of the retaining wing, preventing the retaining part 330 from deflecting inwards, thereby fastening the first plate 401 and the second plate 402.

The fastening sleeve 120 and the fastening pin 110 of the fastening clip 100 in the present application are members that can be separated and coupled to each other. The fastening sleeve 120 and the fastening pin 110 are integrally formed of thermoplastic materials, respectively. The materials of the fastening sleeve 120 and the fastening pin 110 allow the fastening sleeve 120 and the fastening pin 110 to have certain strength, while the retaining wings of the fastening sleeve 120 and the elastic arms of the fastening pin 110 have certain elasticity. In the using process, the fastening sleeve 120 is firstly installed at a designated position, and then the fastening pin 110 is inserted into the fastening sleeve 120, so that the component to be connected can be fastened. When it is desired to remove the clip 100, the pin 110 is first removed from the sleeve 120 and the sleeve 120 is then removed from the hole in the component.

Figure 5 is a cross-sectional view of the fastener sleeve into two panels to be joined. As shown in fig. 5, the first plate 401 and the second plate 402 have the same size of the

holes

411 and 412, and the second plate 402 is positioned below the first plate 401. When the fastening sleeve 120 is installed, the fastening sleeve 120 is inserted into the hole 411 downward from above the first plate 401, and the guide portion formed by the lower slope 363 of the holding portion guides the fastening sleeve 120 into the hole 411. Continuing to press the fastening sleeve 120 downward, the retaining portion lower ramp 363 is pressed by the aperture 411 such that the retaining

wings

311 and 312 deform and the retaining portion 330 deflects inward into the aperture 411. Continuing to press the fastening sleeve 120 downward, the retaining portion 330 passes through the

holes

411 and 412 in order to reach below the second plate 402. At this time, the holding portion 330 is no longer pressed by the inner sides of the hole 411 and the hole 412, so that the holding

wings

311 and 312 are restored to be deformed to a free state, and the holding portion 330 is moved outward beyond the edge of the hole 412. At this time, as shown in fig. 5, the clamping sleeve 120 reaches the mounting position, and the holding portion upper slope 362 of the holding portion 330 abuts against the edge of the hole 412, limiting the axial movement of the clamping sleeve 120 to some extent. However, since the retaining

wings

311 and 312 of the fastening sleeve 120 have some elasticity, deformation by inward deflection easily occurs, so that the retaining portion 330 easily enters the

holes

412 and 411 again, and the first plate 401 and the second plate 402 are loosely separated. It is therefore necessary to insert the fastening pin 110 into the fastening sleeve 120 to prevent the retaining

wings

311 and 312 of the fastening sleeve 120 from deflecting inward.

Fig. 6 is a cross-sectional view of the fastening clip 100 into two panels to be joined. As shown in fig. 6, after the fastening sleeve 120 is inserted into the two plate panels to be connected, the fastening pin 110 is inserted into the hole 305 of the fastening sleeve 120 and mounted in place, and the

plates

401 and 402 are connected by the fastening clip 100. During insertion of the fastening pin 110, the

respective protrusions

251 and 252 of the

resilient arms

233 and 234 are pressed by the inner wall of the hole 305 to be deflected inwardly, and the fastening pin 110 continues to move downwardly until the head 211 of the fastening pin 110 enters the recess 309 of the fastening sleeve 120, and the upper surface of the head 211 is flush with the upper surface of the fastening sleeve 120. At this time, the

projections

251 and 252 enter the

windows

231 and 232 of the fastening sleeve 120, the

elastic arms

233 and 234 recover their deformation, and the

projections

251 and 252 are restricted by the respective upper and lower edges of the

windows

231 and 232, so that the fastening pin 110 is not easily moved in the axial direction with respect to the fastening sleeve 120. The pin portion 212 of the fastening pin 110 is located in the fastening sleeve receptacle 335 and is in close proximity or contact with the inner walls of the retaining

wings

311 and 312, so that the retaining

wings

311 and 312 are not easily deflected inwardly. At this point, the fastening clip 100 is installed in place in the two panels to be joined. The first plate 401 and the second plate 402 are sandwiched between the base 301 and the holding portion 330 of the fastening sleeve 120.

When it is necessary to remove the fastening clip 100, a tool may be inserted into the

grooves

236 and 237 of the head 211 of the fastening pin 110 to pull the fastening pin 110 upward. The collar 120 is then pulled upwardly to complete the removal. The angle of inclination of the upper ramp 263 of the projection enables the upper ramp 263 of the projection to guide the upward movement of the fastening pin 110 during the removal of the fastening pin 110. The angle of inclination of the upper ramp 263 of the lug is between 0 deg. and 45 deg. with respect to the horizontal, so that the fastening pin 110 has a suitable extraction force with respect to the fastening sleeve 120. Too large an angle of inclination makes the pull out force of fitting pin 110 too small, easily drops from fastening cover 120, and too small an angle of inclination makes the pull out force of fitting pin 110 too large, is unfavorable for dismantling fitting pin 110, or takes place easily to damage at fitting pin 110 removal in-process. The inclination angle of the holder upper slope 362 is such that the convex upper slope 263 can guide the fastening sleeve 120 to move upward during fastening of the fastening sleeve 120. Similarly, the angle of inclination of the retainer upper ramp 362 relative to horizontal is between 0 ° and 45 °. So that the clamping sheath 120 has a suitable pull-out force with respect to the component to be connected.

In some embodiments, the inner diameter of the hole 411 of the first plate 401 may be slightly larger than the inner diameter of the hole 412 of the second plate 402, as long as the inner diameter of the hole 412 of the second plate 402 matches the inner diameter of the retaining

wings

311 and 312 of the fastening sleeve 120, and the size of the hole 411 of the first plate 401 is smaller than the size of the base 301. When the sizes of the holes of two or more members to be connected are different, a member having a smaller hole is disposed below, and the size of the clip mounting hole of the member to be connected is determined by the size of the smallest hole located below.

The holding portion height of fastening clip in this application is less, does not exceed 2mm, when connecting a plurality of parts, can adapt to the less condition of installation space of part lower part, can not produce with the structure of part lower part and interfere. The fastening clip 100 includes the fastening pin 110 and the fastening sleeve 120, and the fastening sleeve 120 and the fastening pin 110 are installed in steps, so that the installation process of the fastening clip 100 is easy and the insertion force is small. When the fastening clip 100 is removed, the fastening sleeve 120 and the fastening pin 110 are pulled out step by step, so that the removal process of the fastening clip 100 is easy and the pull-out force is small. And in the process of dismantling, the fastening clip 100 is not easy to be damaged and can be used repeatedly. The fastening pin 110 provides support for the fastening sleeve 120 when the fastening clip 100 is installed in place, so that the fastening clip is not easily moved relative to the mounting components, enabling the mounting components to be securely connected.

While only certain features of the application have been illustrated and described herein, many modifications and changes will occur to those skilled in the art. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the application.

Claims

1. A fastening clip, comprising:

a fastening pin (110), the fastening pin (110) having a head (211) and a pin portion (212), the pin portion (212) extending downwardly from the head (211);

a fastening sleeve (120), the fastening sleeve (120) comprising a base (301) and at least one pair of retaining wings (311, 312), the base (301) having a hole (305) thereon, the pin portion (212) being detachably insertable into the hole (305) of the base (301), the at least one pair of retaining wings (311, 312) extending downward from a lower surface of the base (301) and being arranged around the hole (305), a lower portion of the at least one pair of retaining wings (311, 312) having a retaining portion (330) formed to protrude outward;

wherein the fastening sleeve (120) is insertable into a hole of a component to be connected, the outer contour of the lower part of the fastening pin (120) matching the contour of the inner walls of the at least one pair of retaining wings (311, 312) in the circumferential direction, such that when the fastening pin (110) is mounted in place in the fastening sleeve (120), the outer surface of the lower part of the fastening pin (110) abuts against the inner surface of the at least one pair of retaining wings (311, 312) of the fastening sleeve (120), thereby preventing the at least one pair of retaining wings (311, 212) from deflecting inwards.

2. The fastener clip of claim 1, wherein:

the holding part (330) has a holding part top (364), the holding part top (364) is located on one side of the holding part (330) away from the central axis of the fastening clip, and the size of the outer side of the holding part top (364) is larger than the size of the fastening clip mounting hole of the part to be connected in the free state of the fastening sleeve (120).

3. The fastener clip of claim 1, wherein:

the height of the holding part (330) is not more than 2mm.

4. The fastener clip of claim 1, wherein:

the holding part (330, 340) includes a holding part upper slope (362, 372) and a holding part lower slope (363, 373), the holding part upper slope (362, 372) extending in a direction away from the holding wing (311, 312) and being inclined downward, the holding part lower slope (363, 373) extending in a direction away from the holding wing (311, 312) and being inclined upward.

5. The fastener clip of claim 1, wherein:

the at least one pair of retaining wings (311, 312) is provided with an opening (333, 334), the outside of the fastening pin (110) is provided with a protrusion (251, 252), and the protrusion (251, 252) can enter the opening (333, 334) when the fastening pin (110) is mounted in place in the fastening sleeve (120).

6. The fastener clip of claim 5, wherein:

the pin part (110) is cylindrical, the pin part (110) comprises a window (231, 232) and elastic arms (233, 234), and the bottoms of the elastic arms (233, 234) are connected with the lower edges of the window (231, 232) so that the elastic arms (233, 234) can move in the window (231, 232).

7. The fastener clip of claim 1, wherein:

the base (301) has a recess (309) formed by recessing downwardly from an upper surface of the base (301), the head (211) being able to enter the recess (309) so that the head (211) is flush with the base (301) when the fastening pin (110) is mounted in place in the fastening sleeve (120).

8. The fastener clip of claim 7, wherein:

the recess (309) of the fastening socket (120) has a main body portion (391) and a pair of side portions (392, 393), the pair of side portions (392, 393) extending from the main body portion (391) toward an outer edge of the base (301), a shape of the main body portion (391) matches a shape of the head portion (211), the head portion (211) of the fastening pin (110) has a pair of grooves (236, 237) formed by being depressed upward from a lower surface of the head portion (211), a depth of the grooves (236, 237) is smaller than a thickness of the head portion (211), one ends of the grooves (236, 237) extend through the outer edge of the head portion (211), and the grooves (236, 237) are alignable with the pair of side portions (392, 393).

9. The fastener clip of claim 1, wherein:

the at least one pair of retaining wings (311, 312) comprises two retaining wings, which are symmetrically arranged and have a certain spacing.

10. The fastener clip of claim 1, wherein:

inner side walls of the at least one pair of retaining wings (311, 312) extend perpendicular to the extension direction of the base (301).