TWI802137B - Waterproof coating strucutre for a connector cable - Google Patents

Abstract

A waterproof coating structure for a connector cable may include a connector, a connecting outer tube, a rubber sleeve and a sleeve. The connector is connected to a cable. The connecting outer tube is annularly mounted to the periphery of the cable, and assembled and fixed to the end of the connector. The sleeve is engaged with the connecting outer tube, such that the connector is firmly connected to the cable, and the engagement portion of outer tube uses the slits to form a plurality of elastic clasps. The non-straight shaft sleeve hole of the rubber sleeve makes the engagement portion to be stretched out by the rubber sleeve when the rubber sleeve is assembled along the cable into the inner diameter of engagement portion. When the sleeve coats and fixes the engagement portion, the tightness of sleeve can be ensured through the engagement portion in the stretch status, preventing the cable from being detached from the connector.

Description

Connector cable waterproof covering structure

The invention relates to a cable connector, in particular to a waterproof covering structure of a connector cable.

By the way, the existing connectors are used in outdoor places, which has gradually become widespread and common. Therefore, the demand for the waterproof effect of the connectors is also getting higher and higher. Most of the connections are made of metal materials with excellent conductivity for electrical signal transmission. , and these metal materials are easily affected by moisture, which will damage the transmission function or even lose its function. Although there are product structures specially designed for moisture-proof connectors on the market, the waterproof effect is still not satisfactory.

A known connector includes a plurality of conductive terminals, an insulating base, a cable and a covering body. One end of the insulating base is fixed through each of the conductive terminals. The cable has a plurality of core wires, and each of the core wires is connected to each The conductive terminals are connected, and the coating system covers each of the conductive terminals, the insulating base body and the part of the cable. However, the coating system covers the insulating bases and cables by injection molding, and it is easy to fail the injection coating due to mold or structural tolerances, that is, the entire set of connectors will be scrapped, resulting in cost reduction. increase, and because the insulating seat system is a hard material, and the covering body is a soft material, the two materials need to be close to each other to achieve the waterproof effect, but after a period of use, the two materials are too different due to their physical properties. Therefore, there will be gaps between the two materials and peeling off, causing water vapor to infiltrate, making the conductive terminals damp and reducing their efficacy. Therefore, how to improve the production yield of the connector and how to make the connector waterproof Efficiency, and how to improve the overall structural strength and durability of the connector has become the subject of research by the inventors.

In view of this, the present inventor has been engaged in the manufacture, development and design of related products for many years. After careful design and careful evaluation for the above-mentioned goals, he finally obtained a practical invention.

The technical problem to be solved by the present invention is to provide a buckle-type connector cable waterproof covering structure for the above-mentioned deficiencies in the prior art.

The waterproof coating structure of the above-mentioned connector cable includes: a connector connected to a cable; a connecting outer cylinder, a tie ring is arranged on the outer periphery of the cable, and assembled and fixed on the end of the connector, and the connecting outer cylinder The end of the barrel away from the connector forms a buckle section, and the buckle section is provided with a plurality of sectional grooves in the axial direction from the end, and makes the buckle section form a plurality of elastic buckles, and the outer surface of the elastic buckle A plurality of buckle ribs are arranged in the radial direction; a rubber sleeve, the inner diameter of the rubber sleeve forms a non-straight sleeve hole, the outer diameter of the rubber sleeve is provided with a connecting section, and the upper end of the connecting section is provided with a The anti-leakage section, the outer diameter of the anti-leakage section is larger than the outer diameter of the connecting section, and the inner diameter of the sleeve hole relative to the anti-leakage section is smaller than the inner diameter relative to the linking section, the rubber sleeve is The bushing hole is tightly worn outside the cable, and the connecting section is assembled into the inner diameter of the buckle section of the connecting outer cylinder. Using the non-straight cylindrical design feature of the bushing hole, the rubber sleeve is put on the cable. When the cable is connected, the outer diameter can be stretched outward again, and the elastic buckle of the connecting outer cylinder is further pushed out, and the leak-proof section is against the end of the connecting outer cylinder; a set of sleeves is passed through the The cable is buckled with the connecting outer cylinder, and the bottom periphery of the sleeve is provided with a plurality of buckle slots through the inner and outer diameter surfaces, and is buckled with the connecting outer cylinder through the buckle slots The ribs are buckled and fixed, so that the elastic buckle of the connecting outer cylinder can be pushed out through the outwardly stretched rubber sleeve, so that the sleeve and the connecting outer cylinder can be closely matched.

Preferably, the inner diameter of the buckle section connecting the outer cylinder is formed into a reamed shape and has a first step, so that a composite ring groove is formed between the inner diameter of the buckle section and the cable.

Preferably, the upper end of the anti-leakage section of the rubber sleeve forms a sleeve section, the outer diameter of the sleeve section is smaller than the outer diameter of the anti-leakage section, and a fastening ring is provided on the upper half of the sleeve section groove, and the upper end of the fastening ring groove further forms an introduction section whose outer diameter is smaller than that of the sleeve section.

Preferably, it further includes a tightening ring, the perimeter of the tightening ring is equidistantly provided with a plurality of split grooves, and a plurality of tightening pieces are defined between the cut grooves, and the top ends of the tightening pieces are all inside A clamping claw is formed at the end, the tightening ring is sleeved on the socket section of the rubber sleeve, and the clamping claw of the tightening piece is buckled in the buckling ring groove, and the top of the sleeve The inner diameter forms a tapered hole tapered from bottom to top. The tapered hole is used to squeeze and tighten the tightening piece of the tightening ring so that the clamping jaws clamp the rubber sleeve for fastening. The ring groove makes the rubber sleeve retract and closely fit the outer diameter of the cable.

Preferably, a guide inclined surface is provided on the top outer edge of each of the tightening pieces of the tightening ring.

Preferably, the sleeve hole of the rubber sleeve forms a tapered hole from bottom to top, and the angle difference between the top end and the bottom end of the sleeve hole is between 2 degrees and 5 degrees.

Preferably, the inner wall of the sleeve hole of the rubber sleeve is provided with a ring protrusion relative to the position of the anti-leakage section.

Preferably, the inner wall of the bushing hole of the rubber sleeve forms a convex arc surface, and the diameter of the bottom end of the bushing hole is larger than that of the top hole.

Preferably, the outer edge end surface of the leak-proof section of the rubber sleeve is any type of flat surface or curved surface.

Compared with the effect of the previous technology: the present invention connects the connector firmly to the cable through the snap-fit connection between the outer cylinder and the sleeve cylinder, which helps to improve the connector and the cable assembly. The success rate of installation can greatly reduce the risk of connector combination failure, and the structure is low in cost, easy to assemble, durable, etc., and maintains the practicability of the structure.

The buckle section connecting the outer cylinder utilizes the slits to form a plurality of the elastic buckles, and utilizes the non-straight sleeve hole design feature of the rubber sleeve to allow the rubber sleeve to pass through the cable 11 When assembled and assembled into the inner diameter of the buckle section, the buckle section will be stretched by the rubber sleeve, so that when the sleeve covers the buckle section and is fastened and fixed, the buckle section in the stretched state can pass through The buckle section ensures the tightness of the buckle of the sleeve and avoids the possibility of the cable being detached from the connector.

The anti-leakage section of the rubber sleeve is braced against the inside of the sleeve, which can effectively prevent the impact of water pressure from entering and greatly improve the waterproof effect.

〔this invention〕

10: Connector

11: Cable

20: Connect the outer cylinder

21: buckle section

211: Grooving

212: elastic buckle

213: Buckle ribs

214: step department

22: Combined ring groove

30: rubber sleeve

31: Shaft sleeve hole

311: ring convex part

312: Convex surface

32: link segment

33: Leak stop section

34: socket segment

341: Fastening Ring Groove

35: Import section

40: tightening ring

41: Grooving

42: Tightening piece

421: Gripper

422: guide bevel

50: sleeve

51: Buckle slot

52: tapered hole

[Fig. 1] is a perspective view of the present invention.

[Fig. 2] is an exploded view of the present invention.

[Fig. 3] is an exploded sectional view of the present invention.

[Fig. 4] is an enlarged sectional view of the rubber sleeve embodiment (1) of the present invention.

[Fig. 5] is a sectional view of the structure assembly process of the present invention.

[Fig. 6] is a partially enlarged sectional view of the structure assembly process of the present invention.

[Fig. 7] is a partially enlarged sectional view of the sleeve and the buckle connecting the outer cylinder of the present invention.

[Fig. 8] is a partially enlarged cross-sectional view of the sleeve sleeve and the connecting outer cylinder of the present invention, which are further buckled.

[Fig. 9] is a sectional view of the rubber sleeve embodiment (two) of the present invention.

[Fig. 10] is a sectional view of the rubber sleeve embodiment (three) of the present invention.

[Fig. 11] is a sectional view of the rubber sleeve embodiment (four) of the present invention.

In order to enable your review committee members to have a further understanding and understanding of the purpose, characteristics and effects of the present invention, please cooperate with the [simplified description of the drawings] to describe in detail as follows:

First of all, please refer to Figures 1, 2, 3, and 4, a connector cable waterproof coating structure, which includes: a connector 10, connected to a cable 11; a connected outer cylinder 20, a tie ring It is arranged on the outer periphery of the cable 11 and assembled and fixed at the end of the connector 10, and the end of the connecting outer cylinder 20 away from the connector 10 forms a buckle section 21, and the buckle section 21 is connected from the end along the axial direction. A plurality of sectional grooves 211 are provided, and the buckle section 21 forms a plurality of elastic buckle pieces 212. The outer surface of the elastic buckle piece 212 is provided with a plurality of buckle ribs 213 along the radial direction, and the inside of the buckle section 21 is The diameter is formed into a reamed shape and has a first step portion 214, so that there is a combined ring groove 22 between the inner diameter of the buckle section 21 and the cable 11; a rubber sleeve 30, the inner diameter of the rubber sleeve 30 forms a non-straight cylinder A shaft sleeve hole 31 in the shape of a rubber sleeve 30 is provided with a connecting section 32 at one end of the outer diameter of the rubber sleeve 30, and a leak-proof section 33 is arranged at the upper end of the connecting section 32, and the outer diameter of the leak-stop section 33 is larger than the outer diameter of the connecting section 32. , and the inner diameter of the shaft sleeve hole 31 relative to the anti-leakage section 33 is smaller than the inner diameter relative to the position of the connecting section 32, and the upper end of the anti-leakage section 33 forms a sleeve section 34, and the outer sleeve section 34 The circle diameter is smaller than the outer diameter of the anti-leakage section 33, and the upper half of the sleeve section 34 is provided with a buckle ring groove 341, and the upper end of the buckle ring groove 341 further forms an inlet with an outer diameter smaller than the sleeve section 34. Segment 35; a tightening ring 40, the peripheral system of the tightening ring 40 is equidistantly provided with a plurality of split grooves 41, and a plurality of tightening pieces 42 are defined between the cut grooves 41, and the tops of the tightening pieces 42 A clamping claw 421 is formed at the inner end, and a guiding slope 422 is provided on the outer edge of the top end of each tightening piece 42; a combination tube 50 passes through the cable 11 and snaps together with the connecting outer tube 20 The periphery of the bottom end of the sleeve 50 is provided with a plurality of buckle slots 51 through the inner and outer diameter surfaces, and is fastened and fixed with the buckle ribs 213 connecting the outer cylinder 20 through the buckle slots 51 , The top inner diameter of the sleeve 50 is A tapered hole 52 is formed from bottom to top, and the tapered hole 52 is used to squeeze the tightening piece 42 of the tightening ring 40 .

The composition of its structure, please refer to the 3rd, 5th, 6th, 7th, and 8th figures again, the connection outer cylinder 20 is fixedly connected to the end of the connector 10, and is arranged around the cable 11, the rubber sleeve The socket section 34 of the cylinder 30 is first set the tightening ring 40, and the clamping claw 421 of the tightening piece 42 is embedded and restricted in the buckling ring groove 341, and then the rubber sleeve 30 is sleeved with a shaft. The hole 31 is tightly threaded on the outside of the cable 11, and the connecting section 32 is assembled into the combined ring groove 22 of the connecting outer cylinder 20 relative to the inner diameter of the buckling section 21, thereby utilizing the non-straight cylindrical shape of the bushing hole 31 Design features, when the rubber sleeve 30 is worn on the cable 11, the outer diameter of the rubber sleeve 30 can be stretched outwards, and the elastic buckle 212 of the buckle section 21 is further pushed out, and the leak-proof The section 33 abuts against the end of the connecting outer cylinder 20, and then the sleeve 50 is assembled along the direction of the cable 11 toward the connecting outer cylinder 20. When the sleeve 50 passes through the rubber sleeve 30, it can be reused. Due to the material properties of the rubber sleeve 30, the elastic buckle 212 connected to the outer cylinder 20 is squeezed from the outside to the inside, and the buckle slot 51 and the buckle rib 213 are fastened and fixed. The rubber sleeve of the rubber sleeve has the characteristics of pushing out the elastic buckle 212, so that the sleeve 50 and the connecting outer cylinder can be closely matched to prevent the sleeve 50 from falling off, and the leak-proof section 33 of the rubber sleeve 30 Then it is stretched outwards and tightly attached to the inner wall of the sleeve 50, and can also fill the buckle slots 51 that have not been fastened around the sleeve 50, effectively buffering the impact of water pressure to achieve the purpose of waterproofing.

In addition, when the sleeve 50 and the connecting outer cylinder 20 are buckled and fixed, the tapered hole 52 in the inner diameter of the sleeve 50 presses each of the tightening pieces 42 of the tightening ring 40 along the guide slope 422 , so that the clamping jaws 421 clamp the fastening ring groove 341 of the rubber sleeve 30 inwardly, so that the rubber sleeve 30 shrinks inward and closely fits the outer diameter of the cable 11, which helps to lift the cable The fitting tightness of the cable 11 and the waterproof effect.

Embodiment (1) of the sleeve hole 31 of the above-mentioned rubber sleeve 30, as shown in Figure 4, the sleeve hole 31 of the rubber sleeve 30 forms a tapered hole from bottom to top, The angle difference between the top end and the bottom end of the sleeve hole 31 is between 2 degrees and 5 degrees.

Embodiment (2) of the sleeve hole 31 of the above-mentioned rubber sleeve 30, as shown in FIG. The part 311 helps to increase the extent of the leak-proof section 33 of the rubber sleeve 30 stretching outwards, and enhances the waterproof effect between the connecting outer cylinder 20 and the sleeve 50.

The embodiment (three) of the shaft sleeve hole 31 of the above-mentioned rubber sleeve 30, as shown in Figure 10, the inner wall of the shaft sleeve hole 31 of the rubber sleeve 30 forms a convex arc surface 312, and the shaft sleeve hole 31 The hole diameter at the bottom is larger than that at the top.

The outer edge end surface of the leak-proof section of the above-mentioned rubber sleeve 30 is either a flat surface (as shown in Figure 4) or a curved surface (as shown in Figure 11).

With the structure of the above-mentioned specific embodiment, the following benefits can be obtained: the present invention connects the connector 10 firmly to the cable 11 through the buckle combination of the outer cylinder 20 and the sleeve 50, which helps to lift the cable 11. The success rate of the assembly of the connector 10 and the cable 11 greatly reduces the risk of failure of the combination of the connector 10, and the structural cost is low, easy to assemble, durable, etc., and maintains the practicability of the structure.

Moreover, the buckle section 21 connecting the outer cylinder 20 utilizes the sectional groove 211 to form a plurality of the elastic buckles 212, and utilizes the design characteristic of the non-straight cylindrical shaft sleeve hole 31 of the rubber sleeve 30 to make the rubber sleeve 30 When the sleeve 30 is passed through the cable 11 and assembled into the inner diameter of the buckle section 21, the buckle section 21 will be stretched by the rubber sleeve 30 so that the sleeve 50 covers the buckle When the section 21 is buckled and fixed, the buckle tightness of the sleeve 50 can be ensured through the buckle section 21 in the stretched state, so as to prevent the cable 11 from being connected Doubts about disconnection of the connector 10.

The anti-leakage section 33 of the rubber sleeve 30 is braced against the inside of the sleeve 50, which can effectively prevent the impact of water pressure from entering and greatly improve the waterproof effect.

To sum up, the present invention has indeed achieved a breakthrough structural design, has improved invention content, and at the same time can achieve industrial applicability and progress, and the present invention has not been seen in any publications, and it is also novel. In line with the provisions of the relevant laws and regulations of the Patent Law, I filed an application for a patent for invention according to the law, and I sincerely request the examination committee of the Jun Bureau to grant a legal patent right. I sincerely pray for it.

Only the above is only a preferred embodiment of the present invention, and should not be used to limit the scope of the present invention; that is, all equivalent changes and modifications made according to the patent scope of the present invention should still belong to the present invention within the scope of the patent.

10: Connector

11: Cable

20: Connect the outer cylinder

21: buckle section

211: Grooving

212: elastic buckle

213: Buckle ribs

22: Combined ring groove

30: rubber sleeve

31: Shaft sleeve hole

32: link segment

33: Leak stop section

34: socket segment

341: Fastening Ring Groove

35: Import section

40: tightening ring

41: Grooving

42: Tightening piece

421: Gripper

422: guide bevel

50: sleeve

51: Buckle slot

52: tapered hole

Claims (9)

A connector cable waterproof covering structure, comprising: a connector for connecting a cable; A connection outer cylinder, the connection outer cylinder is set on the outer circumference of the cable, assembled and fixed on the end of the connector, and the end of the connection outer cylinder away from the connector forms a buckle section, and the buckle section is formed by The end portion is provided with a plurality of sectional grooves in the axial direction, and the buckle section forms a plurality of elastic buckle pieces, and the outer surface of the elastic buckle piece is provided with a plurality of buckle ribs in the radial direction; A rubber sleeve, the inner diameter of the rubber sleeve forms a non-straight cylindrical shaft sleeve hole, one end of the outer diameter of the rubber sleeve is provided with a connecting section, the upper end of the connecting section is provided with a leak-proof section, and the outer diameter of the leak-stop section is greater than the outer diameter of the connecting section, and the inner diameter of the bushing hole relative to the anti-leakage section is smaller than the inner diameter of the connecting section, the rubber sleeve is tightly worn on the outside of the cable by the bushing hole , and assemble the connecting section into the inner diameter of the buckle section of the connecting outer cylinder, and make use of the non-straight cylinder design feature of the bushing hole, so that when the rubber sleeve is worn on the cable, the outer diameter can be extended outward stretch, and further push out the elastic buckle connecting the outer cylinder, and the leak-proof section abuts against the end of the connecting outer cylinder; A sleeve, the sleeve is snapped through the cable and connected to the outer tube, and the bottom periphery of the sleeve is provided with a plurality of buckle slots through the inner and outer diameter surfaces, and through the The above buckle slots are fastened and fixed with the buckle ribs of the connecting outer cylinder, so that the elastic buckle of the connecting outer cylinder is pushed out by the rubber sleeve stretched outwards, so that the sleeve and the connecting cylinder The outer cylinders can be closely matched. The waterproof covering structure of the connector cable according to claim 1, wherein, the inner diameter of the buckle section of the connecting outer cylinder is formed into a reamed shape and has a first step, so that the inner diameter of the buckle section is the same as that of the cable There is a combined ring groove between them. The waterproof coating structure for connector cables as described in Claim 1, wherein the upper end of the leak-proof section of the rubber sleeve forms a sleeve section, and the outer diameter of the sleeve section is smaller than the outer diameter of the leak-proof section , and the upper half of the sleeve section is provided with a buckle ring groove, and the upper end of the buckle ring groove forms an introduction section whose outer diameter is smaller than the sleeve section. The connector cable waterproof covering structure as described in claim 3, further comprising a tightening ring, a plurality of split grooves are equidistantly arranged around the tightening ring, and a plurality of split grooves are defined between the split grooves. A tightening piece, the top of the said tightening piece forms a jaw at the inner end, the tightening ring is sleeved on the socket section of the rubber sleeve, and the clamping claws of the said tightening piece are buckled and restricted In the fastening ring groove, the inner diameter of the top of the sleeve is formed from bottom to top with a tapered hole, which is used to squeeze the tightening piece of the tightening ring, so as to Make the clamping claws clamp the fastening ring groove of the rubber sleeve, make the rubber sleeve retract and closely fit the outer diameter of the cable. The waterproof covering structure for connector cables as described in Claim 4, wherein a guide slope is provided on the top outer edge of each of the tightening pieces of the tightening ring. The connector cable waterproof covering structure as described in claim 1, wherein the sleeve hole of the rubber sleeve forms a tapered hole from bottom to top, and the gap between the top and bottom ends of the sleeve hole is The angle difference is between 2 degrees and 5 degrees. The connector cable waterproof coating structure according to claim 1 or 5, wherein, the inner wall of the sleeve hole of the rubber sleeve is provided with a ring protrusion relative to the position of the leak-proof section. The waterproof coating structure for connector cables according to claim 1, wherein the inner wall of the sleeve hole of the rubber sleeve forms a convex arc surface, and the diameter of the bottom end of the sleeve hole is larger than the diameter of the top end. The waterproof coating structure for connector cables according to Claim 1, wherein the surface of the leak-proof section of the rubber sleeve is any type of plane or arc.

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