TWI702349B - Fastener structure with integrated conductive and anti-loose/leak-proof - Google Patents

Abstract

The present invention provides a fastener structure with integrated conductive and anti-loose/leak-proof function, comprising: a fastener having a surface, and the part of surface is a fastening contact surface; a conductive and anti-loose coating, which attach to the part of surface. The conductive and anti-loose coating layer comprise an anti-loose material and a conductive material. The anti-loose material is a polyamide resin, an acrylic resin, a polyethylene, an epoxy resin, a silicone, and/or a rubber. The conductive material is a carbon black, a metal powder, a silver wire, and/or a graphite, which is/are mixed in the anti-loose material. By implementing of the invention, the coating on the fastener can be made to have a function of preventing looseness and leakage proof, and achieving the gold of electrical conduction.

Description

Integrated conductive and leak-proof fastener structure

The present invention is a conductive and leak-proof fastener structure, especially a conductive and leak-proof fastener structure that uses antenna fasteners and ground screws and other related products that need to be fastened and combined and conductive and leak-proof.

In recent years, with the advancement of wireless communication technology, in order to receive a large amount of information anytime and anywhere, the demand for outdoor communication antennas and earthing devices to avoid leakage has greatly increased. Therefore, in order to prevent rainwater from leaking into outdoor communication devices and damage them, and to facilitate maintenance , Generally, the connection of antenna fasteners or grounding screws will use anti-loosening glue or leak-proof glue material to waterproof.

As shown in FIGS. 1A and 1B, when the conventional antenna fastener 110 is applied to the antenna and the antenna base, when the anti-loosening glue material P20 and the silver glue P21 are respectively coated on the local position of the thread P30 of the antenna fastener 110, The anti-loose glue material P20 solves the leakage problem of the antenna fastener 110 and the base, but the anti-loose glue material P20 is an insulating material. After the current CF1 passes through the fastener screw P30, the current CF1 will be the anti-loose glue The material is blocked by P20, and only the current CF2 is conducted to the antenna base through the silver glue, thus reducing the antenna signal transmission efficiency. In order to make the antenna fastener 110 have the functions of anti-loosening and conductive at the same time, the antenna fastener 110 must be coated with anti-loosening Leaking glue material P20 and silver glue P21 The two structures make the manufacturing process time-consuming.

As shown in FIGS. 2A and 2B, when the conventional ground screw 120 is applied to the ground connection between the circuit board 401 and the metal casing 403, when the anti-loosening glue material P20 is applied to the local position of the thread P30 of the ground screw, this The ground screw 120 fixes the circuit board 401, the copper column 402 and the metal casing 403 together, and the anti-loosening glue material P20 on the ground screw 120 is tightly combined with the thread 140 of the base of the copper column 402, which can avoid grounding screws 120 and the copper post 402 are loose, but the anti-loosening glue material P20 is an insulating material. After the current CF1 passes through the thread P30 of the ground screw 120, the current CF1 will be blocked by the anti-loosing glue material P20, so the ground screw 120 is coated After the anti-loosening glue material P20 is applied, the conductive function cannot be taken into account, and the grounding cannot be effectively completed. Only the solder joints 404 on the circuit board 401 and the metal casing 403, and the wire 405 are connected to ground the current CF2.

The present invention is an integrated conductive and leak-proof fastener structure, which is mainly to solve the conductive problem of the leak-proof coating structure.

The present invention provides an integrated conductive anti-loosening fastener structure, which includes: a fastener having a thread surface, and a part of the thread surface is a fastening contact surface; and a conductive anti-loosening structure, which It is formed on the fastening contact surface, and the conductive anti-loose structure includes: a anti-loose structure, which is a PA polyamide resin, a PMMA acrylic resin, a PE polyethylene, an Epoxy epoxy resin, and a Silicone silicone rubber , And/or a rubber; a conductive structure, which is mixed in the anti-loose structure, and the conductive structure is a carbon black, a metal powder, a silver wire, and/or a graphene; thereby, the fastener structure is not only It can prevent loosening and can also achieve the function of conductivity.

Through the implementation of the present invention, at least the following advanced effects can be achieved:

1. The fastener can be used to prevent loosening.

2. The fastener can be leak-proof. as well as

3. The fastener can be made conductive.

In order for anyone familiar with the relevant art to understand the technical content of the present invention and implement it accordingly, and according to the content disclosed in this specification, the scope of patent application and the drawings, anyone familiar with the relevant art can easily understand the related purposes and advantages of the present invention Therefore, the detailed features and advantages of the present invention will be described in detail in the embodiments.

P100: Conventional anti-loose and leak-proof fastener structure

P20: Anti-loose glue material

P21: Silver glue

P30: Thread

CF: current

100: Integrated conductive and leak-proof fastener structure

10: Fasteners

110: Antenna fastener

120: Ground screw

130: Thread surface

140: Thread of Base

20: Conductive anti-loose structure

210: Anti-loose structure

220: conductive structure

230: Leak-proof structure

30: Conductive anti-leakage structure

401: circuit board

402: Copper Pillar

403: metal chassis

404: Solder joint

405: Wire

[Figure 1A] is a schematic diagram of the conventional antenna structure with leak-proof fasteners; [Figure 1B] is a schematic diagram of the signal transmission of the conventional antenna with leak-proof fasteners; [Figure 2A] is the conventional ground screw structure with a leak-proof fastener Schematic diagram; [Figure 2B] is a partial cross-sectional view of Figure 2A; [Figure 3-1A] is an embodiment diagram of an antenna structure of an integrated conductive anti-loosening fastener of the present invention; [Figure 3-1B] is a partial cross-sectional view of Figure 3-1A; [Fig. 3-2A] is an embodiment diagram of the antenna structure of an integrated conductive anti-leakage fastener of the present invention; [Fig. 3-2B] is a partial cross-sectional view of Fig. 3-2A; [Fig. 4-1A] is an example of the present invention An example drawing of the ground screw structure of an integrated conductive anti-loosening fastener; [Figure 4-1B] is a partial cross-sectional view of Figure 4-1A; [Fig. 4-2A] is a diagram of an embodiment of the ground screw structure of an integrated conductive anti-loosening fastener of the present invention; and [Fig. 4-2B] is a partial cross-sectional view of Fig. 4-2A.

As shown in FIGS. 3-1A, 3-2A, 4-1A, and 4-2A, the present embodiment provides an integrated conductive and leak-proof fastener structure 100, which includes: a fastener 10; and Conductive anti-loose structure 20.

The fastener 10 is a mechanical element that can mechanically fix one or more elements together. The fastener 10 can be, for example, an antenna fastener 110 or a ground screw 120... etc. The fastener 10 has a surface, and A part of the surface is a fastening contact surface.

Specifically, the fastening contact surface refers to the contact surface between the fastener 10 and the screw 140 of the base, that is, for example, the screw surface 130 or seat surface on the antenna fastener 110 or the ground screw 120.

The conductive anti-loosening structure 20 is formed on the fastening contact surface. That is to say, the conductive anti-loosening structure 20 is formed on the part or seat surface of the thread surface 130 of the antenna fastener 110 or the ground screw 120, and is also based on function As required, the conductive anti-loosening structure 20 can also be, for example, a conductive anti-loosing structure 30, and the coating method of the coating can include half circumference, opposite side, full circumference, seat surface, or head.

The purpose of the conductive anti-loosening structure 20 is to make the contact surface of the fastener 10 and the screw 140 of the base have conductive and anti-loosening functions. Therefore, to achieve the above functions, the conductive anti-loosing structure 20 includes: an anti-loosing structure 210; and a conductive structure 220.

As shown in Figure 3-1B and Figure 3-2B, this embodiment has conductive and leak-proof fasteners When the antenna of 10 is used to combine the antenna with the antenna base, when the conductive anti-loosening structure 20 or the conductive anti-loosening structure 30 is coated on the local position of the screw surface 130 of the antenna fastener 110.

Because the conductive anti-loosening structure 20 or the conductive anti-loosening structure 30 has a conductive function, after the current CF passes through the screw surface 130 of the fastener, the current CF can pass through the conductive anti-loosening structure 20 or the conductive anti-loosening structure 30 and continue to be conducted to The thread 140 of the base, therefore, the antenna fastener 110 after coating the conductive anti-loosening structure 20 or the conductive anti-loosening structure 30 can simultaneously take into account the functions of anti-loosening and signal transmission.

As shown in Figure 4-1B and Figure 4-2B, when the ground screw with conductive anti-loosening of this embodiment is applied to the ground connection between the circuit board 401 and the metal casing 403, when the conductive anti-loosening structure 20 is coated or the conductive The anti-loosening structure 30 is located at a local position of the thread surface 130 of the ground screw 120. The ground screw 120 fixes the circuit board 401, the copper column 402 and the metal casing 403 together, and the conductive anti-loosening structure 20 on the ground screw 120 Or the conductive anti-leakage structure 30 is tightly combined with the thread 140 of the upper base of the copper column 402, which can prevent the ground screw 120 from loosening the copper column 402.

In addition, the conductive anti-loosening structure 20 or the conductive anti-loosening structure 30 has a conductive function. After the current CF passes through the thread surface 130 of the fastener, the current CF can pass through the conductive anti-loosing structure 20 or the conductive anti-loosening structure 30 and continue to be conducted to The copper post 402 and the metal casing 403 are grounded afterwards. Therefore, after the ground screw 120 is coated with the conductive anti-loosening structure 20 or the conductive anti-loosening structure 30, the functions of anti-loosing and grounding can be taken into account at the same time.

In order to increase the friction coefficient of the contact surface between the fastener 10 and the base screw 140, and prevent the fixed fastener 10 and the base from being vibrated and causing looseness between the two, the coating structure is designed as a loosening prevention The structure 210 is, for example, a PA polyamide resin, a PMMA acrylic resin, a PE polyethylene, an Epoxy epoxy resin, a Silicone rubber, and/or a rubber.

Furthermore, the above-mentioned anti-loose structure 210 is an insulating material. In order to make the anti-loose structure 210 have conductive characteristics at the same time, the conductive structure 220 with conductive characteristics is mixed into the anti-loose structure In 210, for example, a carbon black, a metal powder, a silver wire, and/or a graphene, so that the structure of the fastener 10 combined with the coating structure can not only have the anti-loosening function but also achieve the conductive function.

In order to make the conductive anti-loosening structure 20 also have the function of preventing leakage, the anti-loosening structure 210 is further mixed with a leakage preventing structure 230, such as a fluorine-containing resin and/or a PU polyurethane leakage preventing structure 230, so that the conductive anti-loosening The structure 20 becomes a conductive and leak-proof structure 30 with good elasticity. When the conductive and leak-proof structure 30 is in contact with the fastener 10 or the screw 140 of the base, it becomes tighter, thereby making the structure of the fastener 10 more leak-proof Function.

In order to confirm the conductive function of the conductive anti-loosening structure 30, it can be confirmed by electrical impedance measurement. For example, the coating method on the ground screw 120 is the whole circumference, and the thickness of the coating meets the thickness of the anti-loosening requirement. The electrical impedance of the cloth area was measured, and the result showed that the ground screw 120 with conductive anti-loosening structure 30 measured a low resistance value, indicating that the coating structure can conduct electricity; while the conventional anti-loosening material is at the same coating thickness , The resistance value is infinite, indicating that the coating structure is insulating.

Under the above-mentioned coating thickness, a torque test is performed to confirm the anti-loosening function of the material. For example, it meets the IFI-524 or IFI-124 specifications of the International Industrial Fasteners Institute (Industrial Fasteners Institute). The example is The integrated conductive and leak-proof M2 specification grounding screw 120 is locked into a component for the first time (1 in), after the first locking, the M2 specification grounding screw 120 is withdrawn from a component (1 out) and the fifth time is withdrawn For a component (5 outputs), the torque value of each condition meets the requirements of the anti-loosening function. The torque results are shown in the table below.

However, the above-mentioned embodiments are used to illustrate the characteristics of the present invention, and their purpose is to enable those who are familiar with the technology to understand the content of the present invention and implement them accordingly, rather than limiting the patent scope of this creation, so everything else does not depart from the present invention. The equivalent modification or modification completed by the spirit of the disclosure should still be included in the scope of patent application described below.

100: Integrated conductive and leak-proof fastener structure

10: Fasteners

110: Antenna fastener

130: Thread surface

140: Thread of Base

20: Conductive anti-loose structure

210: Anti-loose structure

220: conductive structure

CF: current

Claims (6)

An integrated conductive anti-loosening fastener structure, comprising: a fastener having a thread surface, and a part of the thread surface is a fastening contact surface; and a conductive anti-loosing structure, which is formed On the fastening contact surface, the conductive anti-loose structure includes: a anti-loose structure, which is a PA polyamide resin, a PMMA acrylic resin, a PE polyethylene, an Epoxy epoxy resin, and a Silicone silicone rubber , And/or a rubber; a conductive structure, which is mixed in the anti-loosening structure, and the conductive structure is a carbon black, a metal powder, a silver wire, and/or a graphene; thereby making the tight The firmware structure not only has the function of preventing looseness but also can achieve the function of conductivity. According to the fastener structure described in item 1 of the scope of patent application, the fastener is an antenna fastener, and the part of the thread surface is a part of the thread surface of the antenna fastener. The fastener structure described in item 1 of the scope of patent application, wherein the fastener is a ground screw, and the part of the thread surface is a part of the thread surface of the ground screw. The fastener structure described in item 1 of the scope of patent application, wherein the anti-loosening structure is further mixed with a fluorine-containing resin and/or a PU polyurethane anti-leakage structure, thereby making the fastener structure further have a leakage-proof function . The fastener structure described in item 4 of the scope of patent application, wherein the fastener is an antenna fastener, and the part of the thread surface is a part of the thread surface of the antenna fastener. The fastener structure described in item 4 of the scope of patent application, wherein the fastener is a ground screw, and the part of the thread surface is a part of the thread surface of the ground screw.

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