A rivet capable of preventing loosening, slipping and falling off

Abstract

The invention discloses a rivet that is anti-loosening, slipping and falling off, comprising a nail body and a nail sleeve sleeved on the nail body, the nail body comprising a nail cap and a nail rod fixedly connected to the nail cap; a boss is fixedly provided on the nail cap, a nail cap introduction corner portion is provided on the periphery of one side of the boss facing the nail rod, and a nail cap stop corner portion is provided on the periphery of one side of the boss facing away from the nail rod; the nail sleeve comprises a nail cap sleeve sleeved on the nail cap, the nail cap sleeve is hollow inside to form a nail cap groove for accommodating the nail cap; a position in the nail cap groove corresponding to the nail cap stop corner portion is protruded to form an undercut for clamping the nail cap stop corner portion, a side of the undercut facing away from the notch of the nail cap groove is matched with the nail cap introduction corner portion to form the nail cap groove stop corner portion, and a side of the undercut facing the notch of the nail cap groove is matched with the nail cap introduction corner portion to form the nail cap groove introduction corner portion. The rivet is prevented from slipping out of the nail sleeve by the nail cap stop corner and the nail cap groove stop corner; and the nail cap introduction corner and the nail cap groove introduction corner facilitate the pressing of the nail cap into the nail cap groove.

Description

Technical Field

[0001] The invention relates to the field of rivets, and in particular to a rivet which is anti-loosening, anti-slipping and anti-falling. Background Art

[0002] Self-locking rivets are often used to assemble thin plates such as circuit boards. Existing self-locking rivets usually include a pin and a pin sleeve. The pin sleeve has a clamping surface and a sleeve. A slot is opened at the bottom of the sleeve to form an expansion clamping piece. After the pin sleeve is inserted into the thin plate, the pin is inserted into the pin sleeve to expand the expansion clamping piece. The clamping surface and the expansion clamping piece of the pin sleeve clamp and fix the thin plate to complete the assembly of the thin plate. However, with existing self-locking rivets, the force required to insert the pin into the pin sleeve is large, and the pin is easy to loosen and withdraw from the pin sleeve, resulting in fastening failure. If anti-slip and anti-falling measures are required, it is necessary to add multiple drops of adhesive glue to the open position of the thin plate for fixing. The process is cumbersome and easy to miss, the work efficiency is low, and the defective rate of finished products is high. Summary of the invention

[0003] The purpose of the present invention is to provide a rivet that is anti-loosening, anti-slipping and anti-falling, so as to solve the above problems.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A rivet that is anti-loosening, anti-slipping and anti-falling, comprising a nail body and a nail sleeve sleeved on the nail body, wherein the nail body comprises a nail cap and a nail rod fixedly connected to the nail cap;

[0006] A boss is fixedly provided on the nail cap, a nail cap introduction corner is provided on a periphery of a side of the boss facing the nail rod, and a nail cap stop corner is provided on a periphery of a side of the boss facing away from the nail rod;

[0007] The nail sleeve includes a nail cap sleeve which is sleeved on the nail cap, the nail cap sleeve is hollow inside to form a nail cap groove for accommodating the nail cap; a position corresponding to the nail cap stop corner portion in the nail cap groove is protruded to form an undercut for clamping the nail cap stop corner portion, a side of the undercut facing away from the notch of the nail cap groove matches the nail cap introduction corner portion to form a nail cap groove stop corner portion, and a side of the undercut facing the notch of the nail cap groove matches the nail cap introduction corner portion to form a nail cap groove introduction corner portion.

[0008] Optionally, the nail cap sleeve includes a first surface and a second surface relative to each other and an annular side surface located between the first surface and the second surface; a plurality of arc-shaped notches are provided on the annular side surface of the nail cap sleeve, and the arc-shaped notches penetrate the first surface and the second surface of the nail cap sleeve; the plurality of arc-shaped notches are evenly spaced around the annular side surface, so that the annular side surface is wavy.

[0009] Optionally, the boss is arranged around a portion of the nail cap close to the nail rod.

[0010] Optionally, the undercut is arranged around the groove wall of the nail cap groove to form a circular undercut, or a plurality of undercuts are evenly spaced and distributed around the groove wall of the nail cap groove.

[0011] Optionally, the nail sleeve comprises a nail rod sleeve fixedly connected to the nail cap sleeve, and the nail rod sleeve is hollow inside to form a nail rod groove for accommodating the nail rod;

[0012] The notch of the nail cap groove passes through the side of the nail cap sleeve facing away from the nail rod sleeve, and the notch of the nail rod groove passes through the groove bottom of the nail cap groove.

[0013] Optionally, a dividing groove is formed on a side of the nail rod sleeve facing away from the nail cap sleeve, and the dividing groove passes through the bottom of the nail rod groove; the dividing groove divides the end of the nail rod sleeve facing away from the nail cap sleeve to form at least two expansion sheets.

[0014] Optionally, the width of the dividing groove is smaller than the width of the nail rod groove, and the length of the dividing groove is equal to the outer diameter of the nail rod sleeve.

[0015] Optionally, the notch of the dividing groove is located on the side of the nail rod sleeve facing away from the nail cap sleeve, and the distance between the bottom of the groove and the side of the nail rod sleeve facing away from the nail cap sleeve is greater than the distance between the bottom of the nail rod groove and the side of the nail rod sleeve facing away from the nail cap sleeve.

[0016] Optionally, the bottom of the nail rod groove is circular, and one end of the nail rod away from the nail cap is provided with a chamfered corner.

[0017] Optionally, the length of the nail rod is smaller than the length of the nail cap sleeve.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The rivet provided in the embodiment of the present invention has an undercut for clamping the nail cap in the nail cap groove so that the nail body can be self-locked in the nail sleeve. Furthermore, the rivet has a nail cap stop corner on the boss, and a nail cap groove stop corner corresponding to the nail cap stop corner on the undercut, so that the pressing friction of the undercut on the boss can be increased, so that the nail body is not easy to fall out of the nail sleeve. Furthermore, the rivet has a nail cap introduction corner on the boss, and a nail cap groove introduction corner corresponding to the nail cap introduction corner is provided in the nail cap groove, so as to facilitate pressing the nail cap into the nail cap groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0022] Figure 1 A schematic diagram of the structure of a rivet provided in an embodiment of the present invention;

[0023] Figure 2 A schematic cross-sectional view of a rivet provided in an embodiment of the present invention;

[0024] Figure 3 for Figure 2 Enlarged schematic diagram of the circled part;

[0025] Figure 4 A schematic diagram of a structure of a barb provided by an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of another structure of a barb provided in an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of the structure of a nail sleeve provided in an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of the installation of a rivet provided in an embodiment of the present invention.

[0029] Illustrations: 1. nail body; 2. nail sleeve; 11. nail cap; 111. boss; 112. nail cap introduction corner; 113. nail cap stop corner; 12. nail rod; 21. nail cap sleeve; 210. nail cap groove; 211. undercut; 212. nail cap groove introduction corner; 213. nail cap groove stop corner; 214. arc-shaped notch; 22. nail rod sleeve; 220. nail rod groove; 221. dividing groove; 222. expansion sheet. DETAILED DESCRIPTION

[0030] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0032] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0033] An embodiment of the present invention provides a rivet that is anti-loosening, anti-slipping and anti-falling off.

[0034] Please refer to Figure 1-2 The rivet comprises a nail body 1 and a nail sleeve 2 sleeved on the nail body 1, and the nail body 1 comprises a nail cap 11 and a nail rod 12 fixedly connected to the nail cap 11. A boss 111 is fixedly provided on the nail cap 11, and a nail cap introduction corner 112 is provided on the periphery of the boss 111 facing the nail rod 12, and a nail cap withdrawal stop corner 113 is provided on the periphery of the boss 111 facing away from the nail rod 12.

[0035] The nail sleeve 2 includes a nail cap sleeve 21 sleeved on the nail cap 11, and the nail cap sleeve 21 is hollow to form a nail cap groove 210 for accommodating the nail cap 11. The nail cap groove 210 is formed with a protrusion at a position corresponding to the nail cap stop corner 113 to form an undercut 211 for clamping the nail cap stop corner 113, and the shape of one side of the undercut 211 facing away from the notch of the nail cap groove 210 matches the nail cap introduction corner 112 to form the nail cap groove stop corner 213, and the shape of one side of the undercut 211 facing the notch of the nail cap groove 210 matches the nail cap introduction corner 112 to form the nail cap groove introduction corner 212.

[0036] The rivet provided in the embodiment of the present invention has an undercut 211 for clamping the nut 11 in the nut groove 210 so that the nail body 1 can be self-locked in the nail sleeve 2. Furthermore, the rivet has a nut stop corner 113 on the boss 111, and a nut groove stop corner 213 corresponding to the nut stop corner 113 on the undercut 211, so that the pressing friction of the undercut 211 on the boss 111 can be increased, so that the nail body 1 is not easy to fall out of the nail sleeve 2. Furthermore, the rivet has a nut introduction corner 112 on the boss 111, and a nut groove introduction corner 212 corresponding to the nut introduction corner 112 is provided in the nut groove 210, so as to facilitate pressing the nut 11 into the nut groove 210.

[0037] Specifically, the boss 111 is arranged around the part of the nail cap 11 close to the nail rod 12. The nail cap slot stop corner 213 and the nail cap slot introduction corner 212 are connected by an arc surface. There is a boss plane between the nail cap stop corner 113 and the nail cap introduction corner 112, and the nail cap stop corner 113 and the boss plane, as well as the nail cap introduction corner 112 and the boss plane are all connected by an arc surface. The arrangement of the arc surface makes it easier for the nail cap 11 to be introduced and removed from the nail cap slot 210.

[0038] Please refer to Figure 3 , the lead-in angle of the nail cap lead-in corner 112 ( Figure 3 The angle of ∠A) is preferably 30-45°, and the stop angle of the nail cap stop angle 113 is ( Figure 3 The angle of ∠B) is preferably 60-75°. Thus, the relatively gentle stop angle can make the undercut 211 better press the boss 111, and the relatively steep introduction angle facilitates the nail cap 11 to slide into the nail cap groove 210.

[0039] Please refer to Figure 4-5 , the distribution of undercut 211 can be as follows Figure 4 As shown, the undercut 211 is arranged around the groove wall of the nail cap groove 210 to form a circular undercut. Figure 5 As shown, a plurality of undercuts 211 are evenly spaced and arranged around the groove wall of the nail cap groove 210. Both situations can achieve the desired effect of the present invention, and the present invention is not limited thereto.

[0040] In the embodiment of the present invention, the nail cap sleeve 21 includes a first surface and a second surface opposite to each other and an annular side surface between the first surface and the second surface. A plurality of arc-shaped notches 214 are provided on the annular side surface of the nail cap sleeve 21, and the arc-shaped notches 214 penetrate the first surface and the second surface of the nail cap sleeve 21. The plurality of arc-shaped notches 214 are evenly spaced around the annular side surface, so that the annular side surface is wavy.

[0041] The wavy annular side surface provides the nail nut sleeve 21 with better stretching performance, which is conducive to the nail nut sleeve 21 expanding outwards during the process of pressing the nail nut 11, and shrinking to surround and clamp the nail nut 11 after the nail nut 11 is completely pressed in.

[0042] Please refer to Figure 2 and Figure 6 In the embodiment of the present invention, the nail sleeve 2 includes a nail rod sleeve 22 fixedly connected to the nail cap sleeve 21 , and the nail rod sleeve 22 is hollow to form a nail rod groove 220 for accommodating the nail rod 12 .

[0043] The notch of the nail cap groove 210 passes through the side of the nail cap sleeve 21 away from the nail rod sleeve 22, and the notch of the nail rod groove 220 passes through the bottom of the nail cap groove 210. Figure 2 In the figure, the top surface of the nail cap slot 210 is its slot opening, and the bottom surface is its slot bottom; the top surface of the nail rod slot 220 is its slot opening, and the bottom surface is its slot bottom.

[0044] A split groove 221 is formed on one side of the nail rod sleeve 22 away from the nail cap sleeve 21, and the split groove 221 passes through the bottom of the nail rod groove 220. The split groove 221 splits the end of the nail rod sleeve 22 away from the nail cap sleeve 21 to form at least two expansion pieces 222.

[0045] Specifically, the width of the dividing groove 221 ( Figure 1 B1) is smaller than the width of the nail rod groove 220 ( Figure 1 In B2), the length of the dividing groove 221 is equal to the outer diameter of the nail rod sleeve 22.

[0046] The notch of the dividing groove 221 is located on the side of the nail rod sleeve 22 away from the nail cap sleeve 21, and the distance between the bottom of the groove and the side of the nail rod sleeve 22 away from the nail cap sleeve 21 is greater than the distance between the bottom of the nail rod groove 220 and the side of the nail rod sleeve 22 away from the nail cap sleeve 21.

[0047] Please refer to Figure 7 , a rivet hole is formed on both the product plate and the target plate. When installing the product plate and the target plate, first pass the nail cap 11 through the two rivet holes, and the expansion piece 222 is located below the target plate. Then press the nail body 1 into the nail sleeve 2, and the undercut 211 in the nail cap groove 210 locks the nail cap 11 to prevent the nail body 1 from falling out. The nail rod 12 enters the dividing groove 221 from the nail rod groove 220. Since the outer diameter of the nail rod 12 is greater than the width of the dividing groove 221, the expansion piece 222 will spread away from the nail rod 12, forming an outward-turned petal-shaped undercut 211 structure, thereby locking the product plate and the target plate.

[0048] Furthermore, the bottom of the nail rod groove 220 is circular, and one end of the nail rod 12 away from the nail cap 11 is provided with a rounded corner, so as to facilitate the nail rod 12 to enter the dividing groove 221 to open the expansion sheet 222.

[0049] Furthermore, the length of the nail rod 12 is smaller than the length of the nail cap sleeve 21 , and the expansion sheet 222 can protect the nail rod 12 from being squeezed by external force after being expanded, so that the rivet is always in a locked state.

[0050] The rivet provided in the embodiment of the present invention has an undercut 211 for clamping the nut 11 in the nut groove 210 so that the nail body 1 can be self-locked in the nail sleeve 2. Furthermore, the rivet has a nut stop corner 113 on the boss 111, and a nut groove stop corner 213 corresponding to the nut stop corner 113 on the undercut 211, so that the pressing friction of the undercut 211 on the boss 111 can be increased, so that the nail body 1 is not easy to fall out of the nail sleeve 2. Furthermore, the rivet has a nut introduction corner 112 on the boss 111, and a nut groove introduction corner 212 corresponding to the nut introduction corner 112 is provided in the nut groove 210, so as to facilitate pressing the nut 11 into the nut groove 210.

[0051] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rivet that prevents loosening, slipping and falling off, characterized in that: It comprises a nail body and a nail sleeve sleeved on the nail body, wherein the nail body comprises a nail cap and a nail rod fixedly connected to the nail cap; A boss is fixedly provided on the nail cap, a nail cap introduction corner is provided on a periphery of a side of the boss facing the nail rod, and a nail cap stop corner is provided on a periphery of a side of the boss facing away from the nail rod; The nail sleeve comprises a nail cap sleeve sleeved on the nail cap, the nail cap sleeve is hollow inside to form a nail cap groove for accommodating the nail cap; a position corresponding to the nail cap stop corner portion in the nail cap groove is protruded to form an undercut for clamping the nail cap stop corner portion, a side of the undercut facing away from the notch of the nail cap groove matches the nail cap introduction corner portion to form a nail cap groove stop corner portion, and a side of the undercut facing the notch of the nail cap groove matches the nail cap introduction corner portion to form a nail cap groove introduction corner portion; The nail cap sleeve comprises a first surface and a second surface opposite to each other and an annular side surface between the first surface and the second surface; a plurality of arc-shaped notches are formed on the annular side surface of the nail cap sleeve, and the arc-shaped notches penetrate the first surface and the second surface of the nail cap sleeve; the plurality of arc-shaped notches are distributed around the annular side surface at equal intervals, so that the annular side surface is wavy; The boss is arranged around the portion of the nail cap close to the nail rod.

2. The anti-loosening and anti-falling rivet according to claim 1, characterized in that: The undercut is arranged around the groove wall of the nail cap groove to form a circular undercut, or a plurality of undercuts are evenly spaced and distributed around the groove wall of the nail cap groove.

3. The anti-loosening and anti-falling rivet according to claim 1, characterized in that: The nail sleeve comprises a nail rod sleeve fixedly connected to the nail cap sleeve, and the nail rod sleeve is hollow inside to form a nail rod groove for accommodating the nail rod; The notch of the nail cap groove passes through a side of the nail cap sleeve facing away from the nail rod sleeve, and the notch of the nail rod groove passes through the groove bottom of the nail cap groove.

4. The anti-loosening and anti-falling rivet according to claim 3, characterized in that: A split groove is formed on one side of the nail rod sleeve away from the nail cap sleeve, and the split groove passes through the bottom of the nail rod groove; the split groove splits the end of the nail rod sleeve away from the nail cap sleeve to form at least two expansion pieces.

5. The anti-loosening and anti-falling rivet according to claim 4, characterized in that: The width of the dividing groove is smaller than the width of the nail rod groove, and the length of the dividing groove is equal to the outer diameter of the nail rod sleeve.

6. The anti-loosening and anti-falling rivet according to claim 4, characterized in that: The notch of the dividing groove is located on the side of the nail rod sleeve away from the nail cap sleeve, and the distance between the groove bottom and the side of the nail rod sleeve away from the nail cap sleeve is greater than the distance between the groove bottom of the nail rod groove and the side of the nail rod sleeve away from the nail cap sleeve.

7. The anti-loosening and anti-falling rivet according to claim 3, characterized in that: The bottom of the nail rod groove is circular, and one end of the nail rod away from the nail cap is provided with a rounded corner.

8. The anti-loosening and anti-falling rivet according to claim 3, characterized in that: The length of the nail rod is smaller than the length of the nail cap sleeve.

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