Wall nail

Abstract

The invention relates to a wall nail. The wall nail comprises a body and an external member, the body extends in a rod shape and comprises a head part, a body part and a radial flange located between the head part and the body part, the body part is provided with an external thread section, and the radial flange is provided with a non-circular section outline; the external member comprises a first part and a second part, the first part covers the outer surface of the head part, and the second part covers the outer surface of the radial flange and is provided with a circular section outline.

Description

TECHNICAL FIELD

[0001] The present application relates to a locking structure, in particular to a wall plug. BACKGROUND

[0002] In the prior art, a thermal insulation plate is usually laid on the surface of a cement wall or a steel frame, and is locked to the surface of the cement wall or the steel frame by a plurality of self-tapping screws, so as to block the heat exchange between the indoor and outdoor. However, the self-tapping screws are easily rusted and aged, and the gaps between the thermal insulation plate and the self-tapping screws are prone to cause the leakage of heat and moisture. Therefore, there is a need to improve the prior art.

[0003] Therefore, it is necessary to provide a novel and advanced wall plug to solve the above problems. SUMMARY

[0004] In order to solve the above problems, the main purpose of the present application is to provide a wall plug which is helpful for thermal insulation and has good durability.

[0005] In order to achieve the above purpose, the present application provides a wall plug, comprising a body and a set. The body extends in a rod shape and comprises a head, a body portion and a radial flange between the head and the body portion, the body portion is provided with an external thread section, and the radial flange has a non-circular cross-sectional profile; the set comprises a first part and a second part, the first part is covered on the outer surface of the head, and the second part is covered on the outer surface of the radial flange and has a circular cross-sectional profile.

[0006] Preferably, the radial flange comprises an upper surface close to the head and a lower surface opposite to the upper surface, the second part comprises a first ring wall facing the upper surface and a second ring wall facing the lower surface, and the thickness of the second ring wall is greater than the thickness of the first ring wall.

[0007] Preferably, the radial flange comprises at least one flat surface and at least one arc surface, the second part comprises a circumferential wall covered on the at least one flat surface and the at least one arc surface, and the part of the circumferential wall facing the at least one flat surface has a first thickness, and the part of the circumferential wall facing the at least one arc surface has a second thickness smaller than the first thickness, as viewed along an axial direction of the body.

[0008] Preferably, the first thickness is at least 3 times the second thickness.

[0009] Preferably, the body further comprises a first section, a second section and a third section arranged in sequence between the radial flange and the body portion, the radial dimensions of the first section, the second section and the third section decrease towards a side away from the head, and the set is spaced from the second section.

[0010] Preferably, the second portion protrudes beyond a thickness of the radial flange by no more than 1 / 2 of a length of the first section in an axial direction of the body.

[0011] Preferably, the body is formed by a zinc alloy material via a die casting process.

[0012] Preferably, the zinc alloy material has a zinc content of no less than 95.5wt% and an aluminum content of no less than 3.9wt%.

[0013] Preferably, the set is made of a nylon material, the head has an ear and a through hole passing through the ear, the first portion entirely covers the ear and has an inner mold line and an outer mold line extending circumferentially around the through hole.

[0014] Preferably, the radial flange includes an upper surface close to the head and a lower surface opposite to the upper surface, the second portion includes a first annular wall facing the upper surface and a second annular wall facing the lower surface, the second annular wall has a thickness greater than that of the first annular wall; a thickness of the second annular wall is at least 2 times a thickness of the first annular wall; the radial flange includes at least two straight planes and at least two arc surfaces, the second portion includes an annular wall covering the two straight planes and the two arc surfaces, as viewed in the axial direction, a portion of the annular wall facing each straight plane has a first thickness, a portion of the annular wall facing each arc surface has a second thickness smaller than the first thickness; the two straight planes extend parallel to each other; the first thickness is at least 3 times the second thickness; the body is formed by a zinc alloy material via a die casting process; the zinc alloy material has a zinc content of no less than 95.5wt% and an aluminum content of no less than 3.9wt%; the set is made of a nylon material, the head has an ear and a through hole passing through the ear, the first portion entirely covers the ear and has an inner mold line and an outer mold line extending circumferentially around the through hole; a thickness of the ear is greater than a thickness of the radial flange; a hardness of the body is greater than a hardness of the set; a radial dimension of the externally threaded section is smaller than a radial dimension of the third section; and a length of the externally threaded section is no less than 2 centimeters.

[0015] The present application has the following advantages:

[0016] The wall plug provided by the present application has the following advantages. The outer threaded section of the body can be drilled into a fixing surface. When the head is driven, the sleeve is not easy to rotate relative to the body, and the structure is stable. The sleeve can also prevent the head from being exposed outward and covering the drilled hole on the fixing surface, reducing the transmission of heat and moisture. The second ring wall has a larger thickness to provide better thermal insulation effect. When the wall plug is locked into the fixing surface, the second ring wall is resistant to wear and tear and is not easy to be damaged. The body is made of a zinc alloy material and is formed by die casting through a mold. The precision is high, the production efficiency is good, and the strength is high, so it is easy to lock into the fixing surface. The sleeve can be slightly deformed under pressure to tightly close the gap between the body and the interlayer, effectively reducing heat exchange. The sleeve is made of a nylon material, which is durable and safe. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A perspective view of a preferred embodiment of the present application.

[0018] Figure 2 A perspective view of a body of a preferred embodiment of the present application.

[0019] Figure 3 A sectional view of a preferred embodiment of the present application.

[0020] Figure 4 A top view of a preferred embodiment of the present application.

[0021] REFERENCE NUMERALS

[0022] 1: wall plug; 10: body; 11: head; 111: ear; 112: through hole; 12: body; 121: outer threaded section; 13: radial flange; 131: upper surface; 132: lower surface; 133: flat surface; 134: arc surface; 14: first section; 15: second section; 16: third section; 20: sleeve; 21: first part; 211: inner mold line; 212: outer mold line; 22: second part; 221: first ring wall; 222: second ring wall; 223: circumferential wall; 223a: first thickness; 223b: second thickness; L: length; T1: thickness; T2: thickness. DETAILED DESCRIPTION

[0023] The following only illustrates possible implementation forms of the present application by way of examples, but is not intended to limit the scope of protection of the present application. The term "a" or "at least one" before a noun in the text is not a limitation on the number, and can also be "a plurality" according to the needs. Changes in the number are also within the scope of protection, and it is hereby stated.

[0024] Please refer to Figures 1 to 4 which shows a preferred embodiment of the present application. The wall plug 1 of the present application comprises a body 10 and a sleeve 20.

[0025] The body 10 extends in a rod shape and includes a head portion 11, a body portion 12 provided with an externally threaded section 121, and a radial flange 13 between the head portion 11 and the body portion 12, the radial flange 13 having a non-circular cross-sectional profile; the set 20 includes a first portion 21 covering an outer surface of the head portion 11 and a second portion 22 covering an outer surface of the radial flange 13 and having a circular cross-sectional profile. In this way, the externally threaded section 121 can be used to drill into a fixed surface (such as, but not limited to, a concrete wall surface, a steel plate, etc.), and when the head portion 11 is driven, the set 20 is less likely to rotate relative to the body 10, has good structural stability, and the set 20 can also prevent the head portion 11 from being exposed outwardly and covering the drilled hole on the fixed surface, reducing the transmission of heat and moisture.

[0026] In particular, the radial flange 13 includes an upper surface 131 close to the head portion 11 and a lower surface 132 opposite the upper surface 131, the second portion 22 includes a first annular wall 221 facing the upper surface 131 and a second annular wall 222 facing the lower surface 132, the thickness T2 of the second annular wall 222 is greater than the thickness T1 of the first annular wall 221, as shown in Figure 3 Preferably, the thickness T2 of the second annular wall 222 is at least 2 times the thickness T1 of the first annular wall 221, the second annular wall 222 has a greater thickness to provide better thermal insulation, and when the wall plug 1 is locked into the fixed surface, the second annular wall 222 is resistant to wear and tear and is less likely to be damaged.

[0027] With reference to Figure 2 and Figure 4 , the radial flange 13 includes at least one flat surface 133 and at least one arc surface 134, the second portion 22 includes a circumferential wall 223 covering the at least one flat surface 133 and the at least one arc surface 134, as viewed along an axial direction of the body 10, the portion of the circumferential wall 223 facing the at least one flat surface 133 has a first thickness 223a, and the portion of the circumferential wall 223 facing the at least one arc surface 134 has a second thickness 223b less than the first thickness 223a. In this embodiment, the radial flange 13 includes two flat surfaces 133 extending parallel to each other, effectively preventing the set 20 from rotating relative to the head portion 11; the first thickness 223a is preferably at least 3 times the second thickness 223b, has good thermal insulation and the set 20 also has good structural strength and is less likely to be damaged.

[0028] The body 10 further comprises a first section 14, a second section 15 and a third section 16 disposed in sequence between the radial flange 13 and the body portion 12, the radial dimensions of the first section 14, the second section 15 and the third section 16 decrease towards a side away from the head portion 11, the sleeve 20 is spaced apart from the second section 15 so that the body portion 12 can be forced radially against an interlayer (such as but not limited to a heat insulation plate, a sound insulation plate, a board mold, etc.) provided on the fixing surface. The radial flange 13 is adjacent to the first section 14 in the axial direction of the body 10, the second portion 22 protrudes from a thickness (i.e. the thickness T2 of the second ring wall 222) of the radial flange 13 by not more than 1 / 2 of a length L of the first section 14, so that the first section 14 can be stably inserted into the interlayer. Preferably, a radial dimension of the external threaded section 121 is smaller than a radial dimension of the third section 16; a length of the external threaded section 121 is not less than 2 cm, so that the external threaded section 121 can be stably locked into the fixing surface, and the third section 16 can also be forced radially against the interlayer.

[0029] Further, the body 10 is formed by die casting from a zinc alloy material, which has high precision, good production efficiency and high strength. The zinc alloy material has a zinc content of not less than 95.5 wt% and an aluminum content of not less than 3.9 wt%. The hardness of the body 10 is greater than the hardness of the sleeve 20, so that when the wall plug 1 is locked to the fixing surface and the interlayer, the body 10 has good strength and is easily locked into the fixing surface, and the sleeve 20 can be slightly deformed to tightly seal the gap between the body portion 12 and the interlayer, effectively reducing heat exchange.

[0030] The sleeve 20 is made of a nylon material, such as but not limited to nylon 6, nylon 66, nylon composite material, etc., which has good rigidity, toughness, chemical corrosion resistance and weather resistance, and can achieve the UL94-V0 flame resistance level, is durable and safe. The head portion 11 has an ear piece 111 and a through hole 112 passing through the ear piece 111, the first portion 21 fully covers the ear piece 111 and has an inner mold line 211 and an outer mold line 212 extending circumferentially around the through hole 112, and the thickness of the ear piece 111 is greater than the thickness of the radial flange 13. It can be understood that the inner mold line 211 and the outer mold line 212 are relatively weak parts of the sleeve 20, and the above configuration can effectively prevent the sleeve 20 from being damaged by force, and has good durability.

Claims

1. A wall anchor, characterized in that, Comprising: a body extending in a bar shape, including a head portion, a body portion, and a radial flange between the head portion and the body portion, the body portion being provided with an externally threaded section, the radial flange having a non-circular cross-sectional profile; and a set including a first portion and a second portion, the first portion being disposed on an outer surface of the head portion, the second portion being disposed on an outer surface of the radial flange and having a circular cross-sectional profile.

2. The wall anchor of claim 1, wherein, The radial flange includes an upper surface proximate to the head portion and a lower surface opposite to the upper surface, the second portion includes a first annular wall facing the upper surface and a second annular wall facing the lower surface, the second annular wall having a thickness greater than that of the first annular wall.

3. The wall anchor of claim 1, wherein, The radial flange includes at least one flat surface and at least one curved surface, the second portion includes a circumferential wall disposed on the at least one flat surface and the at least one curved surface, as viewed in an axial direction of the body, a portion of the circumferential wall facing the at least one flat surface has a first thickness, a portion of the circumferential wall facing the at least one curved surface has a second thickness smaller than the first thickness.

4. The wall anchor of claim 3 wherein, The first thickness is at least 3 times the second thickness.

5. The wall anchor of claim 1 wherein, The body further includes a first section, a second section, and a third section disposed in sequence between the radial flange and the body portion, the radial dimensions of the first section, the second section, and the third section decrease toward a side away from the head portion, the set is spaced apart from the second section.

6. The wall anchor of claim 5 wherein, The radial flange is adjacent to the first section, as viewed in an axial direction of the body, a thickness of the second portion protruding from the radial flange is not greater than 1 / 2 of a length of the first section.

7. The wall anchor of claim 1 wherein, The body is formed by die casting a zinc alloy material via a mold.

8. The wall anchor of claim 7 wherein, The zinc alloy material has a zinc content of not less than 95.5 wt% and an aluminum content of not less than 3.9 wt%.

9. The wall anchor of claim 1 wherein, The set is made of a nylon material, the head portion has a tab and a through hole passing through the tab, the first portion entirely covers the tab and has an inner mold line and an outer mold line extending circumferentially around the through hole.

10. The wall anchor of claim 6 wherein, The radial flange includes an upper surface proximate to the head and a lower surface opposite to the upper surface, the second portion includes a first annular wall facing the upper surface and a second annular wall facing the lower surface, a thickness of the second annular wall is greater than a thickness of the first annular wall; a thickness of the second annular wall is at least 2 times a thickness of the first annular wall; the radial flange includes at least two straight planes and at least two arc surfaces, the second portion includes an annular peripheral wall covering the two straight planes and the two arc surfaces, as viewed in the axial direction, a portion of the annular peripheral wall facing each straight plane has a first thickness, a portion of the annular peripheral wall facing each arc surface has a second thickness smaller than the first thickness; the two straight planes extend parallel to each other; the first thickness is at least 3 times the second thickness; the body is formed by die casting from a zinc alloy material; a zinc content of the zinc alloy material is not less than 95.5 wt%, an aluminum content of the zinc alloy material is not less than 3.9 wt%; the set is made of a nylon material, the head has a tab and a through hole passing through the tab, the first portion entirely covers the tab and has an inner mold line and an outer mold line extending circumferentially around the through hole; a thickness of the tab is greater than a thickness of the radial flange; a hardness of the body is greater than a hardness of the set; a radial dimension of the externally threaded segment is smaller than a radial dimension of the third segment; and a length of the externally threaded segment is not less than 2 centimeters.

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