A waterproof connector having a multi-layer sealing structure

Abstract

The utility model discloses a waterproof connector with multilayer sealing structure, including: connector body, the through of connector body is equipped with sealed cavity, and the inner wall of one end opening of sealed cavity is equipped with at least one clamping groove, and the inner wall of another opening of sealed cavity is equipped with internal thread section, waterproof cap, waterproof cap forms and connects, and the other end of connector body is inserted in the joint, and the outer wall of joint is provided with external thread section, and the part of outer wall of joint that stretches into sealed cavity is embedded and is provided with annular sealing washer, and the outer wall of sealing washer is provided with at least two outer slope ring structure in proper order, and outer slope ring structure is inclined to set towards sealing washer, and the first deformation space has between two adjacent outer slope ring structure. The utility model discloses a waterproof connector with multilayer sealing structure, forms multistage sealing cooperation, effectively disperses stress, avoids sealing washer and deforms because of single stress, thereby has improved waterproof effect.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a waterproof connector with a multi-layer sealing structure. Background Technology

[0002] A waterproof connector is one that can be used in wet environments and maintains its internal mechanical and electrical performance under certain water pressure. The connector includes a plug and a mating socket, with the socket located on the outside and inside of the connector respectively, for cable or fiber optic connection. To ensure the reliable sealing of the connector interface, a sealing ring is usually installed inside the connector to achieve waterproofing. For example, utility model patent CN204855873U discloses a convenient waterproof connector, consisting of PIN pins, an inner core, C-LENS, rubber ring one, rubber ring two, a ferrule assembly, rubber ring three, a baffle, a green wire, a support tube, a base, an inner sleeve, a crimping ring, a crimping tube, a rear cable nut, rubber ring four, rubber ring five, a spring, a locking cable, and an optical cable. However, most sealing rings use a circular cross-section. After connection, the sealing ring is compressed, forming an interference fit, which may cause deformation due to uneven stress, affecting the waterproof effect. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the aforementioned technologies by designing a waterproof connector with a multi-layer sealing structure. This multi-level sealing combination effectively disperses stress, preventing the sealing ring from deforming due to a single stress, thereby improving the waterproof effect.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a waterproof connector with a multi-layer sealing structure, comprising:

[0005] The connector body has a through-hole sealing cavity extending along its axial direction. At least one snap-fit ​​groove is provided on the inner wall of one end opening of the sealing cavity, and an internal thread section is provided on the inner wall of the other opening of the sealing cavity.

[0006] The mounting base is provided on one end of the connector body, and the inner wall of the mounting base is provided with a snap fastener that engages with the snap-fit ​​groove. The mounting base is provided with a socket, both ends of which are connector ends, located on the outer side of the mounting base and the inner wall of the sealing cavity, respectively.

[0007] A waterproof cap has a tubular connector that is inserted into the other end of the connector body. The outer wall of the connector has an external thread that engages with the internal thread. The outer wall of the portion of the connector that extends into the sealing cavity is fitted with an annular sealing ring. The outer wall of the sealing ring has at least two external ramp ring structures arranged sequentially. The external ramp ring structures are inclined toward the sealing ring, and there is a first deformation space between two adjacent external ramp ring structures.

[0008] Preferably, the portion of the connector that extends into the sealing cavity is a sealing coupling ring, and the outer wall of the sealing coupling ring is provided with a positioning groove for the sealing ring to be embedded.

[0009] Preferably, the outer ramp ring structure is integrally formed with the sealing ring.

[0010] Preferably, the outer wall of the outer ramp ring structure includes a first ramp wall, a first sealing arc corner wall, and an end face wall connected in sequence. The first ramp wall is inclined toward the sealing ring. A V-shaped first deformation space is formed between the end face wall of the outer ramp ring structure and the first ramp wall of the outer ramp ring structure connected thereto. An interference fit is formed between the first sealing arc corner wall and the first ramp wall connected thereto and the inner wall of the sealing cavity.

[0011] Preferably, the inner wall of the sealing ring is provided with at least one inner ramp ring structure, the inner ramp ring structure is inclined toward the positioning groove, and there is a second deformation space between the inner ramp ring structure and the sealing ring.

[0012] Preferably, the inner ramp ring structure is integrally formed with the sealing ring.

[0013] Preferably, the outer wall of the inner ramp ring structure includes a second ramp wall, a second sealing arc corner wall, and a ramp wall connected in sequence. The second ramp wall and the ramp wall are both inclined toward the positioning groove. A V-shaped second deformation space is formed between the ramp wall and the inner wall of the sealing ring connected to it. An interference fit is formed between the second sealing arc corner wall and the second ramp wall and the inner wall of the positioning groove connected to it.

[0014] Preferably, the second ramp wall forms an obtuse angle with the interior of the sealing ring to which it is connected.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The mounting base and waterproof cap are respectively installed on both ends of the connector body. The waterproof cap is used to seal and protect the inner cavity of the connector body. The mating head on the waterproof cap is threaded with the internal thread on the connector body through the external thread section. The annular sealing ring embedded on the mating head is formed by two external bevel ring structures on the outer wall. The screwing force during the threaded connection between the waterproof cap and the connector body causes the two external bevel ring structures to be compressed and deformed through the first deformation space, thereby forming a multi-stage sealing fit, effectively dispersing the force, and preventing the sealing ring from deforming due to a single force, thus improving the waterproof effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the waterproof connector in the embodiment;

[0018] Figure 2 This is a cross-sectional view of the waterproof connector in the embodiment. Figure 1 ;

[0019] Figure 3 This is a cross-sectional view of the waterproof connector in the embodiment. Figure 1 ;

[0020] Figure 4 This is a cross-sectional view of the sealing ring in the embodiment.

[0021] In the diagram: 1. Connector body; 101. Sealing cavity; 102. Snap-fit ​​groove; 103. Internal thread section; 2. Mounting base; 201. Snap-fit ​​element; 202. Socket; 203. Connector end; 204. Protective cap; 3. Waterproof cap; 301. Butt joint; 302. External thread section; 303. Sealing mating ring; 304. Positioning groove; 4. Sealing ring; 41. Outer ramp ring structure; 411. First ramp wall; 412. First sealing arc corner wall; 413. End face wall; 42. First deformation space; 43. Inner ramp ring structure; 431. Second ramp wall; 432. Second sealing arc corner wall; 433. Angled wall; 44. Second deformation space; 5. Connecting strip; 501. Rotating ring. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0023] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4A waterproof connector with a multi-layer sealing structure includes a connector body 1, a mounting base 2, and a waterproof cap 3. The connector body 1 has a through-hole sealing cavity 101 extending axially. Two symmetrically arranged snap-fit ​​grooves 102 are formed on the inner wall of one opening of the sealing cavity 101, and an internally threaded section 103 is formed on the inner wall of the other opening. The mounting base 2 is provided with a socket 202, both ends of which are connector ends 203. The mounting base 2 covers one end of the connector body 1, thus covering one opening of the sealing cavity 101. The inner wall of the mounting base 2 is provided with a snap-fit ​​element 201 that engages with the snap-fit ​​grooves 102. After the mounting base 2 is connected to the connector, the two connector ends 203 are located on the outer side of the mounting base 2 and the inner wall of the sealing cavity 101, respectively. Preferably, a protective cap 204 is inserted into the connector end 203 located on the outer side of the mounting base 2.

[0024] A connecting band 5 is provided between the connector body 1 and the waterproof cap 3. The two ends of the connecting band 5 have rotating rings 501. The two rotating rings 501 are respectively sleeved on the outer wall of the connector body 1 and the outer wall of the waterproof cap 3. The waterproof cap 3 forms a tubular mating joint 301. The mating joint 301 is inserted into the other end of the connector body 1, so that the waterproof cap 3 covers the other end opening of the sealing cavity 101. The outer wall of the mating joint 301 is provided with an external thread section 302 that is threaded with the internal thread section 103. The part of the mating joint 301 that extends into the sealing cavity 101 is a sealing mating ring 303. The outer wall of the sealing mating ring 303 is provided with a positioning groove 304, and an annular sealing ring 4 is embedded in the positioning groove 304.

[0025] The outer wall of the sealing ring 4 is provided with two outer ramp ring structures 41 in sequence. The outer ramp ring structures 41 are inclined toward the sealing ring 4 and are integrally formed with the sealing ring 4. The outer wall of the outer ramp ring structure 41 includes a first ramp wall 411, a first sealing arc corner wall 412 and an end face wall 413 connected in sequence. The first ramp wall 411 is inclined toward the sealing ring 4. A V-shaped first deformation space 42 is formed between the end face wall 413 of the outer ramp ring structure 41 and the first ramp wall 411 of the outer ramp ring structure 41 connected thereto.

[0026] The inner wall of the sealing ring 4 is provided with an inner ramp ring structure 43, which is inclined toward the positioning groove 304. The inner ramp ring structure 43 is integrally formed with the sealing ring 4. The outer wall of the inner ramp ring structure 43 includes a second ramp wall 431, a second sealing arc corner wall 432, and a ramp wall 433 connected in sequence. The second ramp wall 431 and the ramp wall 433 are both inclined toward the positioning groove 304. A V-shaped second deformation space 44 is formed between the ramp wall 433 and the inner wall of the sealing ring 4 connected to it. An obtuse angle is formed between the second ramp wall 431 and the interior of the sealing ring 4 connected to it. The inner ramp ring structure 43 is provided so that the two outer ramp ring structures 41 of the sealing ring 4 extend to the outside of the sealing mating ring 303.

[0027] Mounting base 2 and waterproof cap 3 are respectively mounted on both ends of connector body 1. Waterproof cap 3 is used to seal and protect the inner cavity of connector body 1. The mating joint 301 on waterproof cap 3 is threadedly engaged with the internal thread section 103 on connector body 1 through the external thread section 302. The annular sealing ring 4 embedded on mating joint 301 is deformed by two external ramp ring structures 41 set on the outer wall. Utilizing the screwing force during the threaded connection between waterproof cap 3 and connector body 1, the two external ramp ring structures 41 are deformed under pressure through the first deformation space 42. The first sealing arc wall 412 and its connected first ramp wall 411 and the inner wall of sealing cavity 101 form an interference fit, thereby forming a multi-stage sealing fit. The system effectively distributes the force, preventing the sealing ring 4 from deforming due to a single force, thereby improving the waterproof effect. In addition, during the threaded connection between the waterproof cap 3 and the connector body 1, the inner ramp ring structure 43 undergoes compression deformation through the second deformation space 44. The second sealing arc corner wall 432 forms an interference fit with the second ramp wall 431 connected to it and the inner wall of the positioning groove 304. The inner ramp ring structure 43 plays a good role in elastic buffering and strengthens the seal between the sealing ring 4 and the positioning groove 304. The inner ramp ring structure 43 on the inner wall of the sealing ring 4 and the two outer ramp ring structures 41 on the outer wall of the sealing ring 4 cooperate with each other, thereby further improving the sealing effect of the waterproof cap on the relative ports of the connector body 1.

[0028] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A waterproof connector with a multi-layer sealing structure, characterized in that, include: The connector body (1) has a through-hole (101) extending along its axial direction. At least one snap-fit ​​groove (102) is provided on the inner wall of one end opening of the sealing cavity (101), and an internal thread section (103) is provided on the inner wall of the other opening of the sealing cavity (101). Mounting base (2), which covers one end of the connector body (1), and the inner wall of the mounting base (2) is provided with a snap fastener (201) that engages with the snap-fit ​​groove (102). The mounting base (2) is provided with a socket (202), and both ends of the socket (202) are connector ends (203). The two connector ends (203) are located on the outer side of the mounting base (2) and the inner wall of the sealing cavity (101), respectively. A waterproof cap (3) is formed with a tubular connector (301). The connector (301) is inserted into the other end of the connector body (1). The outer wall of the connector (301) is provided with an external thread section (302) that is threaded with the internal thread section (103). The outer wall of the portion of the connector (301) that extends into the sealing cavity (101) is fitted with an annular sealing ring (4). The outer wall of the sealing ring (4) is provided with at least two external ramp ring structures (41) in sequence. The external ramp ring structures (41) are inclined toward the sealing ring (4). There is a first deformation space (42) between two adjacent external ramp ring structures (41).

2. A waterproof connector with a multi-layer sealing structure according to claim 1, characterized in that, The part of the connector (301) that extends into the sealing cavity (101) is a sealing docking ring (303), and the outer wall of the sealing docking ring (303) is provided with a positioning groove (304) for the sealing ring (4) to be embedded.

3. A waterproof connector with a multi-layer sealing structure according to claim 2, characterized in that, The outer ramp ring structure (41) is integrally formed with the sealing ring (4).

4. A waterproof connector with a multi-layer sealing structure according to claim 2, characterized in that, The outer wall of the outer ramp ring structure (41) includes a first ramp wall (411), a first sealing arc corner wall (412), and an end face wall (413) connected in sequence. The first ramp wall (411) is inclined toward the sealing ring (4). The end face wall (413) of the outer ramp ring structure (41) and the first ramp wall (411) of the outer ramp ring structure (41) connected thereto form a V-shaped first deformation space (42). The first sealing arc corner wall (412) forms an interference fit with the first ramp wall (411) connected thereto and the inner wall of the sealing cavity (101).

5. A waterproof connector with a multi-layer sealing structure according to claim 2, characterized in that, The inner wall of the sealing ring (4) is provided with at least one inner ramp ring structure (43), the inner ramp ring structure (43) is inclined toward the positioning groove (304), and there is a second deformation space (44) between the inner ramp ring structure (43) and the sealing ring (4).

6. A waterproof connector with a multi-layer sealing structure according to claim 5, characterized in that, The inner ramp ring structure (43) is integrally formed with the sealing ring (4).

7. A waterproof connector with a multi-layer sealing structure according to claim 5, characterized in that, The outer wall of the inner ramp ring structure (43) includes a second ramp wall (431), a second sealing arc corner wall (432), and a ramp wall (433) connected in sequence. The second ramp wall (431) and the ramp wall (433) are both inclined toward the positioning groove (304). A V-shaped second deformation space (44) is formed between the ramp wall (433) and the inner wall of the sealing ring (4) connected to it. An interference fit is formed between the second sealing arc corner wall (432) and the inner wall of the second ramp wall (431) and the positioning groove (304) connected to it.

8. A waterproof connector with a multi-layer sealing structure according to claim 7, characterized in that, The second ramp wall (431) forms an obtuse angle with the interior of the sealing ring (4) to which it is connected.

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