A silicone wire sealing and protecting component

Abstract

A silicone wire sealing and protecting component, comprising a housing, a rear cover, a rear sealing ring, a front sealing ring, a wire, a wire end and a terminal. A part of the wire passes through the rear cover and is inside the housing. The wire end is inside the housing and is connected to the wire. A part of the terminal is inside the housing and the other part of the terminal is outside the housing. The wire end and the terminal are partially welded together. The rear sealing ring and the front sealing ring are respectively on both sides of the welding area of the wire end and the terminal, and the rear sealing ring and the front sealing ring are inside the housing. In the present invention, the housing and the rear cover are connected in a buckling manner. The sealing rings with matching shapes respectively arranged on both sides of the welding area between the wire terminal and the terminal can better seal the welding area, so as to extend the service life of the solder joint in a sealing manner with good sealing performance and effective protection for the ultrasonic solder joint.

Description

Technical Field

[0001] The invention relates to an automobile battery wiring harness, in particular to a silicone wire sealing protective component. Background Art

[0002] A wiring harness is a wiring component that connects various electrical devices in a circuit. It consists of an insulating sheath, terminal blocks, wires, and insulating wrapping materials. Wiring harnesses are commonly used in various precision electronic devices, such as automotive circuits, computer motherboard circuits, and household appliance circuits.

[0003] Wire harness welding involves binding a group of metal wires and cables together to carry signals and power between devices. Heat, pressure, or both, and possibly filler materials, are applied to achieve a bond between the workpieces. Traditional wire harness welding processes include fusion welding, brazing, and pressure welding. Pressure welding, also known as solid-state welding, involves achieving an atomic bond between two workpieces under pressure. Wire harness pressure welding methods include diffusion welding, high-frequency welding, cold pressure welding, and ultrasonic welding.

[0004] Ultrasonic welding refers to a special welding method that uses mechanical vibration energy at ultrasonic frequencies (above 16kHz) to connect metals. During ultrasonic welding, high-temperature heat energy is not input into the workpiece. Instead, the elastic vibration energy is converted into workpiece vibration under static pressure to bond the workpieces. Ultrasonic welding can weld both homogeneous and dissimilar metals, such as aluminum and copper, aluminum and stainless steel, titanium and stainless steel, and can also weld metals to non-metals. Ultrasonic welding is widely used in welding leads to metal coatings on germanium and silicon in electronic devices, welding various metals (aluminum, copper, gold, nickel) to metal coatings on ceramics and glass in integrated circuits, welding thermocouples, and packaging and welding chemically active substances such as explosives, reagents, and explosives.

[0005] A qualified solder joint is one that: has sufficient mechanical strength (this is typically achieved by bending the lead terminals of the component being soldered before soldering); is reliable, ensuring good electrical conductivity; and has a neat and aesthetically pleasing surface: the solder joint should be smooth, clean, uniform, symmetrical, neat, and aesthetically pleasing, filling the entire pad and being appropriately proportioned to the pad size. A qualified solder joint is considered a qualified joint only if it meets these three criteria. To prevent oxidation and corrosion during subsequent use, which could cause the solder joint to fall off, heat shrink tubing is commonly used to protect the solder joint. However, heat shrink tubing is very likely to be punctured by burrs on the solder joint and any lifted wire from soldering. Furthermore, silicone wire is chemically stable, so heat shrink tubing doesn't adhere well, resulting in a poor seal. Summary of the Invention

[0006] Aiming at the problems of poor adhesion effect of the adhesive heat shrinkable tube on the silicone wire and poor sealing effect in the above-mentioned existing technologies, the purpose of the present invention is to provide a sealing and protecting component for the silicone wire, so as to extend the service life of the solder joint in a sealing manner with good sealing performance and effective protection for the ultrasonic solder joint.

[0007] In order to achieve the above-mentioned invention purpose, the technical solution adopted by the present invention is as follows:

[0008] A sealing and protecting component for a silicone wire, comprising a housing, a rear cover, a rear sealing ring, a front sealing ring, a wire, a wire end and a terminal. A part of the wire passes through the rear cover and is inside the housing. The wire end is inside the housing and is connected to the wire. A part of the terminal is inside the housing and the other part of the terminal is outside the housing. The wire end and the terminal are partially welded together. The rear sealing ring and the front sealing ring are respectively on both sides of the welding area of the wire end and the terminal, and the rear sealing ring and the front sealing ring are inside the housing.

[0009] Further, the housing includes a main body part, a front end part, an upper connecting part and a lower connecting part. The main body part transitions to the front end part through the upper connecting part and the lower connecting part.

[0010] Further, the upper connecting part and the lower connecting part are designed with inclined surfaces, and the inclined surface slope of the upper connecting part is greater than that of the lower connecting part.

[0011] Further, a protrusion is provided on the main body part, and the protrusions are evenly arranged on the outer surface of the main body part at equal intervals along the circumference of the main body part.

[0012] Preferably, the housing is in a whistle shape.

[0013] Preferably, the rear cover includes a bottom part, a disc-shaped part, a first protrusion part and a second protrusion part. The bottom part extends along the circumference of the inner ring of the disc-shaped part to the side away from the wire. The first protrusion part and the second protrusion part extend from the circumference of the outer ring of the disc-shaped part to the side close to the wire.

[0014] Further, a first through hole is provided on the second protrusion part.

[0015] Further, the position of the first through hole on the second protrusion part corresponds to the position of the protrusion.

[0016] Preferably, reinforcing ribs are provided on the disc-shaped part, and the reinforcing ribs are circumferentially arranged on the disc-shaped part and abut against the rear sealing ring.

[0017] Preferably, a third protrusion is provided on the disc-shaped part, and the third protrusions are circumferentially arranged on the disc-shaped part and abut against the rear sealing ring.

[0018] Adopting the above technical solutions, the beneficial effects of the present invention are as follows:

[0019] The housing and the back cover adopted by the present invention are connected in a buckling manner. Sealing rings with matching shapes are respectively arranged on both sides of the welding area between the wire terminal and the terminal, which can better seal the welding area, so as to extend the service life of the solder joint in a sealing manner with good sealing performance and effective protection for the ultrasonic solder joint. The sample of the silicone wire sealing and protecting part of the present invention has passed the IP67 test in a third-party testing laboratory. Brief Description of the Drawings

[0020] Figure 1 is the front view of the silicone wire sealing and protecting part of the present invention;

[0021] Figure 2 is Figure 1 the cross-sectional view of the silicone wire sealing and protecting part of the present invention taken along A-A of

[0022] Figure 3 is the exploded view of the silicone wire sealing and protecting part of the present invention;

[0023] Figure 4 is the isometric view of the silicone wire sealing and protecting part of the present invention;

[0024] Figure 5 is the left view of the silicone wire sealing and protecting part of the present invention;

[0025] Figure 6 is the bottom view of the silicone wire sealing and protecting part of the present invention;

[0026] Figure 7 is the top view of the silicone wire sealing and protecting part of the present invention. Detailed Description of the Invention

[0027] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and the drawings. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0028] The silicone wire sealing and protecting part provided by the present invention, as Figures 1-3As shown, it includes a housing 1, a rear cover 2, a rear sealing ring 3, a front sealing ring 4, a wire 5, a wire end 6, and a terminal 7. A part of the wire 5 passes through the rear cover 2 and is inside the housing 1. The wire end 6 is inside the housing 1 and is connected to the wire 5. A part of the terminal 7 is inside the housing 1 and another part of the terminal 7 is outside the housing 1. The wire end 6 and the terminal 7 are partially welded together. The rear sealing ring 3 and the front sealing ring 4 are respectively on both sides of the welding area of the wire end 6 and the terminal 7, and the rear sealing ring 3 and the front sealing ring 4 are inside the housing 1. The housing 1 and the rear cover 2 are connected in a snap-fit manner. Wherein both the housing 1 and the rear cover 2 can be made of plastic. The housing 1 and the rear cover 2 can also be made of metal.

[0029] As Figures 2-7 shown, the housing 1 includes a main body part 11, a front end part 12, an upper connecting part 13, and a lower connecting part 14. The main body part 11 transitions to the front end part 12 through the upper connecting part 13 and the lower connecting part 14. Wherein the upper connecting part 13 and the lower connecting part 14 are designed with inclined surfaces, and the slope of the inclined surface of the upper connecting part 13 is greater than the slope of the inclined surface of the lower connecting part 14. In an embodiment, the cross-section at the connection of the upper connecting part 13 and the front end part 12 is arc-shaped to better achieve the transition with the front end part 12. Therefore, the housing 1 presents a whistle shape. The main body part 11, the upper connecting part 13, the lower connecting part 14, and the front end part 12 can be integrally formed. The main body part 11 is a hollow cylinder, and the front end part 12 is a hollow column with an annular cross-section. The cross-section of the front end part 12 can also be elliptical. A protrusion 15 is provided on the main body part 11. The protrusions 15 are evenly arranged on the outer surface of the main body part 11 at equal intervals along the circumference of the main body part 11. The number of the protrusions 15 can be 4, 5, or 6. Positioning components can be provided inside the housing 1. In an embodiment, refer to Figure 2 the component 16 shown in can be provided in the housing 1 and abuts against the rear sealing ring 3.

[0030] As Figures 2-7As shown, the rear cover 2 includes a bottom portion 21, a disc-shaped portion 22, a first protrusion portion 23, and a second protrusion portion 24. The disc-shaped portion 22 is annular. The bottom portion 21 extends along the circumference of the inner ring of the disc-shaped portion 22 to one side. The first protrusion portion 23 and the second protrusion portion 24 extend from the circumference of the outer ring of the disc-shaped portion 22 to the other side. A first through hole 25 is provided on the second protrusion portion 24. The bottom portion 21, the disc-shaped portion 22, the first protrusion portion 23, and the second protrusion portion 24 can be integrally formed, and can be made of plastic or metal. In one embodiment, the first protrusion portion 23 and the second protrusion portion 24 are arranged alternately along the circumference of the outer ring of the disc-shaped portion 22. The number of the first protrusion portion 23 and the second protrusion portion 24 is the same and is the same as the number of the protrusions 15 on the main body portion 11 of the housing 1. The position of the first through hole 25 on the second protrusion portion 24 corresponds to the position of the protrusion 15. The first through hole 25 can be square, circular, or square with rounded corners. The cross-sectional dimension of the first through hole 25 is larger than the cross-sectional dimension of the protrusion 15, so that the protrusion 15 can be received in the first through hole 25. In another embodiment, the number of the first protrusion portion 23 and the second protrusion portion 24 can be different. The number of the second protrusion portion 24 is the same as the number of the protrusions 15 on the main body portion 11 of the housing 1. The position of the first through hole 25 on the second protrusion portion 24 corresponds to the position of the protrusion 15. The first through hole 25 can be square, circular, or square with rounded corners. The cross-sectional dimension of the first through hole 25 is larger than the cross-sectional dimension of the protrusion 15. The first protrusion portion 23 is arranged between two adjacent second protrusion portions 24, that is, the same number of the first protrusion portions 23 can be arranged between two adjacent second protrusion portions 24, and the number of the first protrusion portions 23 between two adjacent second protrusion portions 24 can be 2 or more. In yet another embodiment, the bottom portion 21, the disc-shaped portion 22, the first protrusion portion 23, and the second protrusion portion 24 of the rear cover 2 are integrally formed of plastic. Reinforcing ribs 26 can be provided on the disc-shaped portion 22. The reinforcing ribs 26 are in the same extending direction as the first protrusion portion 23 and the second protrusion portion 24. The reinforcing ribs 26 are circumferentially provided on the disc-shaped portion 22 and abut against the rear sealing ring 3. In yet another embodiment, the bottom portion 21, the disc-shaped portion 22, the first protrusion portion 23, and the second protrusion portion 24 of the rear cover 2 are integrally formed of plastic. A third protrusion is provided on the disc-shaped portion 22. The third protrusion is in the same extending direction as the first protrusion portion 23 and the second protrusion portion 24. The third protrusion is circumferentially provided on the disc-shaped portion 22 and abut against the rear sealing ring 3.

[0031] As Figure 2 and 3As shown in the figure, the rear sealing ring 3 is arranged on the wire 5. The wire 5 is in a cylindrical shape and is connected to the wire end 6. The wire end 6 includes a connecting part (not shown), a bending part 61 and a straight part 62, and the connecting part, the bending part 61 and the straight part 62 can be integrally formed. The connecting part is connected to the wire 5, the bending part 61 connects the connecting part and the straight part 62, and the straight part 62 is in a cuboid shape. The rear sealing ring 3 can be composed of a plurality of identical O-ring rubber sealing rings, or the rear sealing ring 3 can also be a customized single rubber sealing ring. The inner diameter of the cross-section of the rear sealing ring 3 can be slightly smaller than the outer diameter of the cross-section of the wire 5, so that when the rear sealing ring 3 is sleeved on the wire 5, it can be in close contact with the wire 5. At the same time, the outer diameter of the cross-section of the rear sealing ring 3 can be slightly larger than the inner diameter of the cross-section of the main body part 11 of the housing 1, that is, when the rear sealing ring 3 is in the housing 1, it is in close contact with the main body part 11 of the housing 1.

[0032] Similarly, the front sealing ring 4 is arranged on the terminal 7, and the front sealing ring 4 is a rubber sealing ring. The terminal 7 includes a first straight part 71, a bending part 72 and a second straight part 73. A second through hole 74 is arranged on the first straight part 71. The second through hole 74 is circular and is outside the housing 1. The first straight part 71, the bending part 72 and the second straight part 73 can be integrally formed. The cross-sectional shape of the front sealing ring 4 is preferably the same as the cross-sectional shape of the front end part 12 of the housing 1, that is, the cross-section of the front sealing ring 4 is annular. The inner dimension of the cross-section of the front sealing ring 4 can be slightly smaller than the outer dimension of the cross-section of the first straight part 71 of the terminal 7, so that when the front sealing ring 4 is sleeved on the first straight part 71 of the terminal 7, it can be in close contact with the first straight part 71 of the terminal 7. At the same time, the outer dimension of the cross-section of the front sealing ring 4 can be slightly larger than the inner dimension of the cross-section of the front end part 12 of the housing 1, that is, when the front sealing ring 4 is in the housing 1, it is in close contact with the front end part 12 of the housing 1. Therefore, when the rear sealing ring 3 and the front sealing ring 4 are arranged in the housing 1, they can play a good sealing role. The straight part 62 of the wire end 6 is welded to a part of the first straight part 71 of the terminal 7.

[0033] The preparation method of the silica gel wire sealing and protecting part provided by the present invention includes the following steps:

[0034] Step 1: Pre-assemble the rear cover 2 and the rear sealing ring 3 on the wire 5, wherein the first protrusion part 23 and the second protrusion part 24 of the rear cover 2 face the wire end 6;

[0035] Step 2: Fit the straight part 62 of the wire end 6 and the first straight part 71 of the terminal 7 together and weld them together by ultrasonic welding, and visually inspect whether the welding area meets the welding standard;

[0036] Step 3: Use a tooling fixture to install the front sealing ring 4 on one side of the welding area between the wire end 6 and the terminal 7 onto the first flat part 71 of the terminal 7;

[0037] Step 4: Insert the wire 5 equipped with the rear cover 2 and the rear sealing ring 3 and the terminal 7 equipped with the front sealing ring 4 into the housing 1 through the opening of the main body part 11 of the housing 1 until the first flat part 71 of the terminal 7 extends from the front end part 12 of the housing 1 and the front sealing ring 4 contacts the top of the front end part 12 of the housing 1;

[0038] Step 5: Use a tooling fixture to snap the rear cover 2 onto the main body part 11 of the housing 1, that is, the first through hole 25 is snap - connected to the protrusion 15 of the housing 1;

[0039] Step 6: Visually inspect whether the rear cover 2 is fully snapped onto the housing 1, that is, whether the protrusion 15 of the housing 1 is fully snapped into the first through hole 25. When the visual inspection is unqualified, repeat Step 4 and Step 5.

[0040] The housing 1 and the rear cover 2 of the present invention are connected in a snap - fit manner. Sealing rings with matching shapes are respectively arranged on both sides of the welding area between the wire end 6 and the terminal 7, which can better seal the welding area. Thus, in a sealing manner with good sealing performance and effective protection for ultrasonic solder joints, the service life of the solder joints is extended. The prepared silicone wire sealing and protection part sample of the present invention passes the IP67 test in a third - party testing laboratory.

[0041] The above - described embodiments only represent the implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A silicone wire sealing and protecting member, characterized in that, It includes a housing, a rear cover, a rear sealing ring, a front sealing ring, a wire, a wire end and a terminal. A part of the wire passes through the rear cover and is inside the housing. The wire end is inside the housing and connected to the wire. A part of the terminal is inside the housing and the other part of the terminal is outside the housing. The wire end and the terminal are partially welded together. The rear sealing ring is arranged on the wire, and the front sealing ring is arranged on the terminal. The rear sealing ring and the front sealing ring are respectively on both sides of the welding area of the wire end and the terminal, and the rear sealing ring and the front sealing ring are inside the housing; The housing is in a whistle shape, and positioning components are arranged inside the housing, and the components abut against the rear sealing ring; The housing includes a main body part, a front end part, an upper connecting part and a lower connecting part. The main body part transitions to the front end part through the upper connecting part and the lower connecting part; The upper connecting part and the lower connecting part are designed with inclined surfaces, and the slope of the inclined surface of the upper connecting part is greater than that of the inclined surface of the lower connecting part. The main body part is a hollow cylinder, and the front end part is a hollow cylinder with an annular cross-section.

2. The silicone wire sealing and protecting member according to claim 1, wherein Protrusions are arranged on the main body part, and the protrusions are evenly arranged on the outer surface of the main body part at equal intervals along the circumference of the main body part.

3. The silicone wire sealing and protecting part according to claim 2, characterized in that, The rear cover includes a bottom part, a disc-shaped part, a first protrusion part and a second protrusion part. The bottom part extends along the circumference of the inner ring of the disc-shaped part to the side away from the wire, and the first protrusion part and the second protrusion part extend from the circumference of the outer ring of the disc-shaped part to the side close to the wire.

4. The silicone wire sealing and protecting member according to claim 3, characterized in that A first through hole is arranged on the second protrusion part.

5. The silicone wire sealing and protecting member according to claim 4, characterized in that, The position of the first through hole on the second protrusion part corresponds to the position of the protrusion.

6. The silicone wire sealing and protecting member according to claim 3, wherein Reinforcing ribs are arranged on the disc-shaped part. The reinforcing ribs are circumferentially arranged on the disc-shaped part and abut against the rear sealing ring.

7. The silicone wire sealing and protecting member according to claim 3, characterized in that, A third protrusion is arranged on the disc-shaped part. The third protrusion is circumferentially arranged on the disc-shaped part and abut against the rear sealing ring.

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