A pull-resistant, waterproof connector

Abstract

The present application relates to the technical field of connector, in particular to a kind of waterproof connector of anti-pulling, including male end, female end and sealing assembly;Sealing assembly includes multiple first primary sealing ring and multiple second primary sealing ring that are sequentially alternately distributed in the multiple first primary sealing ring and multiple second primary sealing ring of being set in cooperation groove and along cooperation groove axial direction, the inner ring thickness of first primary sealing ring is greater than the outer ring thickness, and the inner ring thickness of second primary sealing ring is less than the outer ring thickness;When male end and female end are inserted, along its axial direction extrude first primary sealing ring and second primary sealing ring, the inner ring of first primary sealing ring thickness greater is extruded thicker, and the outer ring of thickness smaller is extruded more flat, the outer ring of second primary sealing ring thickness greater is extruded thicker, and the inner ring of thickness smaller is extruded more flat, not only more labor-saving, but also using the inner ring of first primary sealing ring of thickness greater, and the outer ring of second primary sealing ring of thickness greater respectively with male end and female end abutment, increase the contact area of sealing position, further improve sealing effect.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more specifically to a pull-out resistant waterproof connector. Background Technology

[0002] With the widespread application of electronic devices in industries such as manufacturing, automotive, and communications, higher requirements are placed on the waterproof, dustproof, and pull-out resistance performance of connectors. Pull-out resistant connectors are designed with locking mechanisms or elastic clamps to enhance connection stability, while waterproof connectors use sealing rings (such as O-rings) to achieve a seal at the interface, preventing moisture and dust from entering the internal circuitry. In some complex operating conditions, connectors must also meet both pull-out resistance and waterproofing requirements.

[0003] In existing technologies, sealing rings mostly achieve sealing through single compression deformation. That is, when compressed, the inner and outer rings deform and protrude to achieve sealing. This not only requires a large compressive force, but the deformed inner and outer rings will also be thinner, resulting in a weakened sealing effect and thus affecting the waterproof performance of the connector. Summary of the Invention

[0004] This invention provides a pull-out resistant waterproof connector to solve the problem of poor sealing effect of the sealing ring in existing connectors.

[0005] The present invention provides a pull-out resistant waterproof connector using the following technical solution:

[0006] A pull-out resistant waterproof connector includes a male end, a female end, and a sealing assembly. The male end includes a male housing and a first wire installed at one end within the male housing. The female end includes a female housing and a second wire installed at one end within the female housing. The female housing has an annular mating groove for insertion into the outer housing, the axis of which is parallel to the insertion direction of the male and female ends. The sealing assembly includes a plurality of first main sealing rings and a plurality of second main sealing rings, which are sleeved within the mating groove and alternately distributed along the axial direction of the groove. The inner thickness of the first main sealing ring is greater than the outer thickness, and the inner thickness of the second main sealing ring is less than the outer thickness. The inner thickness of the first main sealing ring is smaller than the outer thickness of the second main sealing ring. The inner ring of the male housing is larger than the outer ring of the second main sealing ring. The end of the male housing is stepped and is inserted between the outer wall of the mating groove and the sealing component. The end face of the stepped surface of the male housing is deformed along the axial direction of the mating groove by pressing the sealing component, so that the inner ring of the first main sealing ring abuts against the inner wall of the mating groove, and the outer ring of the second main sealing ring abuts against the inner wall of the male housing. The two ends of the multiple first main sealing rings and multiple second main sealing rings in the axial direction of the mating groove are sealed at the other end face of the stepped surface of the male housing and the bottom surface of the mating groove, respectively. After the male housing and the female housing are inserted, they are connected by a snap-fit ​​component provided on both.

[0007] Optionally, the outer side of the second main sealing ring is an arc surface, and the outer ring of the first main sealing ring extends outward from both ends along its axial direction with a first skirt and a second skirt, respectively. The first skirt and the second skirt are made of the same material as the first main sealing ring. In the initial state, the arc surface of the outer ring of the second main sealing ring is wrapped by the first skirt and the second skirt of the two adjacent first main sealing rings, respectively. When the sealing assembly is squeezed and deformed by the male housing, the first skirt and the second skirt open so that the outer ring of the second main sealing ring abuts against the male housing.

[0008] Optionally, the inner side of the first main sealing ring is an arc surface, and the inner ring of the second main sealing ring extends outward along its axial direction away from the male housing with a third skirt. In the initial state, the third skirt fits into the arc surface of the inner ring of the first main sealing ring. When the sealing assembly is squeezed and deformed by the male housing, the third skirt opens and separates from the first main sealing ring, allowing the inner ring of the first main sealing ring to abut against the inner wall of the mating groove.

[0009] Optionally, the sealing assembly further includes two end sealing rings, which are located at both ends of the distribution direction of the plurality of first main sealing rings and the plurality of second main sealing rings, respectively. One side of the end sealing ring is an inclined surface that fits against the first main sealing ring or the second main sealing ring, and the other side is a flat surface for abutting against the end face of the female housing or the male housing.

[0010] Optionally, both the first and second main sealing rings are provided with a receptacle hole connecting their two axially upward ends; in the initial state, the receptacle holes on the first and second main sealing rings are connected to form a receptacle channel for introducing a heat-conducting medium; when the sealing assembly is deformed by the male housing, the receptacle holes on the first and second main sealing rings are staggered.

[0011] Optionally, the male end also includes a first crimp terminal, which is sleeved on the end of the first wire and electrically connected to and crimped with the first wire. After being inserted into the male housing, the first crimp terminal abuts against a pre-reserved step surface inside the male housing, preventing the first wire from detaching from the male housing.

[0012] Optionally, a fixing cylinder is fixed inside the female housing, and the fixing cylinder is located inside the range defined by the mating groove; the female end also includes a second crimping terminal, which is sleeved on the end of the second wire and electrically connected and crimped with the second wire, and after being inserted into the female housing, it abuts against the stepped surface reserved in the female housing in the opposite direction to prevent the second wire from detaching from the female housing; one end of the second crimping terminal extends into the fixing cylinder and is inserted into the first crimping terminal of the male end and electrically connected.

[0013] Optionally, a first waterproof shell is provided at the end of the male shell away from the female shell. The first waterproof shell covers the end of the male shell, and the first wire passes through the first waterproof shell and is inserted into the male shell. A first waterproof plug is provided between the first waterproof shell and the first wire.

[0014] Optionally, a second waterproof shell is provided at the end of the female shell away from the male shell. The second waterproof shell covers the end of the female shell. The second wire passes through the second waterproof shell and is inserted into the female shell. A second waterproof plug is provided between the second wire and the second waterproof shell.

[0015] Optionally, a booster block is provided outside the male and / or female housings.

[0016] The beneficial effects of this invention are as follows: The pull-out resistant waterproof connector of this invention, by setting an alternately distributed first main sealing ring and second main sealing ring, and making the inner ring of the first main sealing ring thicker and the outer ring of the second main sealing ring thicker, makes the end faces of the adjacent sides of the first and second main sealing rings beveled. When subjected to the top pressure when the male and female shells are inserted, the first and second main sealing rings are squeezed against each other along the beveled side. The thicker inner ring of the first main sealing ring is squeezed to be thicker, and the thinner outer ring is squeezed to be flatter. Similarly, the thicker outer ring of the second main sealing ring is squeezed to be thicker, and the thinner inner ring is squeezed to be flatter. This not only saves more effort, but also allows the thicker inner ring of the first main sealing ring to abut against the inner wall of the mating groove at the end of the female shell, and the thicker outer ring of the second main sealing ring to abut against the male shell, increasing the contact area at the sealing position and further improving the sealing effect.

[0017] Furthermore, a first skirt and a second skirt are provided on the outer ring of the first main sealing ring. Before the male and female ends are inserted, the first and second skirts wrap around the outer arc surface of the second main sealing ring for sealing, preventing contamination of the outer arc surface of the second main sealing ring and affecting the sealing effect. When the sealing assembly is compressed, the first and second skirts will move away from the corresponding second main sealing rings as the outer ring of the first main sealing ring is compressed flatter, without affecting the contact between the second main sealing ring and the male housing. The opened first and second skirts can also abut against the side wall of the male housing, forming a double seal.

[0018] Furthermore, the first and second main sealing rings are provided with fluid holes, which form a channel for fluid to enter in the initial state. When the sealing assembly is squeezed, the fluid holes are staggered, and part of the heat-conducting medium enters between the end faces of the first and second main sealing rings, forming a triple seal and achieving a heat dissipation effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a pull-out resistant waterproof connector of the present invention;

[0021] Figure 2 This is a top view of the overall structure of an embodiment of a pull-out resistant waterproof connector according to the present invention;

[0022] Figure 3 for Figure 2 Schematic diagram of cross section along the AA direction;

[0023] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0024] Figure 5 This is a schematic diagram showing the state of the sealing component after being compressed in an embodiment of a pull-out resistant waterproof connector of the present invention.

[0025] Figure 6 This is a cross-sectional schematic diagram of the female housing in an embodiment of a pull-out resistant waterproof connector of the present invention;

[0026] Figure 7 This is a cross-sectional schematic diagram of the male housing in an embodiment of a pull-out resistant waterproof connector of the present invention;

[0027] Figure 8 This is a cross-sectional schematic diagram of the first main sealing ring in an embodiment of a pull-out resistant waterproof connector of the present invention;

[0028] Figure 9 This is a cross-sectional schematic diagram of the second main sealing ring in an embodiment of a pull-out resistant waterproof connector of the present invention;

[0029] Figure 10 This is a schematic diagram of the structure of the first crimp terminal in an embodiment of a pull-out resistant waterproof connector of the present invention;

[0030] Figure 11 This is a schematic diagram of the structure of the second crimp terminal in an embodiment of a pull-out resistant waterproof connector of the present invention;

[0031] Figure 12 This is a cross-sectional schematic diagram of the female end and sealing assembly in an embodiment of a pull-out resistant waterproof connector of the present invention;

[0032] Figure 13 This is a cross-sectional schematic diagram of the male end in an embodiment of a pull-out resistant waterproof connector of the present invention.

[0033] In the figure: 110, male housing; 120, first wire; 130, first crimp terminal; 140, first waterproof housing; 150, first waterproof plug; 210, female housing; 220, second wire; 230, second crimp terminal; 240, fixing cylinder; 250, second waterproof housing; 260, second waterproof plug; 300, sealing assembly; 310, first main sealing ring; 311, first skirt; 312, second skirt; 320, second main sealing ring; 321, third skirt; 330, end sealing ring. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] An embodiment of the present invention, a pull-out resistant waterproof connector, is as follows: Figures 1 to 13 As shown, it includes a male end, a female end, and a sealing assembly 300.

[0036] The male end includes a male housing 110 and a first wire 120 with one end installed inside the male housing 110.

[0037] The female end includes a female housing 210 and a second wire 220 installed inside the female housing 210; the female housing 210 has an annular mating groove for insertion into the male housing 110, and the axis of the mating groove is parallel to the insertion direction of the male end and the female end.

[0038] The sealing assembly 300 includes a plurality of first main sealing rings 310 and a plurality of second main sealing rings 320, which are sleeved within a mating groove and alternately distributed along the axial direction of the mating groove. The inner ring thickness of the first main sealing ring 310 is greater than the outer ring thickness, and the inner ring thickness of the second main sealing ring 320 is less than the outer ring thickness. This results in the end faces of adjacent sides of the first main sealing rings 310 and 320 being inclined surfaces with opposite directions that can fit together. Specifically, the inner ring of the first main sealing ring 310 is smaller than the inner ring of the second main sealing ring 320, and the outer ring of the first main sealing ring 310 is larger than the outer ring of the second main sealing ring 320; that is, the inner ring of the first main sealing ring 310 protrudes beyond the inner ring of the second main sealing ring 320, and the outer ring of the second main sealing ring 320 protrudes beyond the outer ring of the first main sealing ring 310.

[0039] The end of the male housing 110 is a stepped surface and is inserted between the outer ring wall of the mating groove and the sealing assembly 300. The end face of the stepped surface of the male housing 110 deforms along the axial direction of the mating groove by pressing the sealing assembly 300, so that the inner ring of the first main sealing ring 310 abuts against the inner ring wall of the mating groove, and the outer ring of the second main sealing ring 320 abuts against the inner wall of the end of the male housing 110. The two ends of the plurality of first main sealing rings 310 and the plurality of second main sealing rings 320 in the axial direction of the mating groove are respectively sealed at the other end face of the stepped surface of the end of the male housing 110 and the bottom surface of the mating groove. Specifically, the stepped surface at the end of the male housing 110 includes an inner wall surface and two parallel end faces. The inner wall surface is parallel to the insertion direction of the male and female ends, and the two end faces are respectively connected to the two ends of the inner wall surface. When the male and female ends are close to being inserted, the inner wall surface of the male housing 110 is located outside the sealing assembly 300. One end face presses against one end of the sealing assembly 300, and the other end face abuts against the end face of the other end of the sealing assembly 300 inside the female housing 210 when the male and female ends are inserted into place.

[0040] After insertion, the male housing 110 and the female housing 210 are connected by a snap-fit ​​assembly. The snap-fit ​​assembly includes a snap ring on the male housing 110 and a snap hook on the female housing 210. During insertion, the snap ring moves along the side of the snap hook away from the female housing 210 and is deformed by the snap hook. After the male housing 110 and the female housing 210 are in place, the snap ring passes over the snap hook and returns to its original shape to engage with the snap hook, preventing the male housing 110 and the female housing 210 from disengaging.

[0041] By setting alternating first main sealing rings 310 and second main sealing rings 320, and making the inner ring thickness of the first main sealing ring 310 greater and the outer ring thickness of the second main sealing ring 320 greater, the end faces of the adjacent sides of the first main sealing rings 310 and 320 are beveled. When subjected to the top pressure during the insertion of the male housing 110 and the female housing 210, the width of both the first main sealing rings 310 and 320 in the radial direction increases, and the width of the first main sealing rings 310 and 320 along the mating side increases. The inclined surfaces of the first main sealing ring 310 are pressed together, making the thicker inner ring even thicker and the thinner outer ring even flatter. Similarly, the thicker outer ring of the second main sealing ring 320 is pressed even thicker and the thinner inner ring is pressed even flatter. This not only saves effort but also allows the thicker inner ring of the first main sealing ring 310 to abut against the inner wall of the mating groove in the female housing 210, and the thicker outer ring of the second main sealing ring 320 to abut against the male housing 110, increasing the contact area at the sealing position and further improving the sealing effect.

[0042] In this embodiment, the outer side of the second main sealing ring 320 is arc-shaped. The outer ring of the first main sealing ring 310 extends outwards from both ends along its axial direction with a first skirt 311 and a second skirt 312, respectively. Both the first skirt 311 and the second skirt 312 are made of the same material as the first main sealing ring 310. Initially, the arc-shaped outer surface of the second main sealing ring 320 is wrapped by the first skirt 311 and the second skirt 312 of two adjacent first main sealing rings 310. When the sealing assembly 300 is deformed by the male housing 110, the first skirt 311 and the second skirt 312 open, causing the outer ring of the second main sealing ring 320 to abut against the male housing 110. Preferably, initially, the first skirt 311 wraps half of the arc-shaped outer surface of an adjacent second main sealing ring 320, and the second skirt 312 wraps half of the arc-shaped outer surface of another adjacent second main sealing ring 320. Before the male and female ends are inserted, the first skirt 311 and the second skirt 312 wrap around the outer arc surface of the second main sealing ring 320 for sealing, preventing contamination of the outer arc surface of the second main sealing ring 320 and affecting the sealing effect. When the sealing assembly 300 is compressed, the first skirt 311 and the second skirt 312 will move away from the corresponding second main sealing ring 320 as the outer ring of the first main sealing ring 310 is compressed flatter, without affecting the contact between the second main sealing ring 320 and the male housing 110. Furthermore, the opened first skirt 311 and the second skirt 312 can abut against the side wall of the male housing 110, forming a double seal.

[0043] In this embodiment, the inner side of the first main sealing ring 310 is arc-shaped, and the inner end of the second main sealing ring 320 extends outward along its axial direction away from the male housing 110 with a third skirt 321. Initially, the third skirt 321 fits against the arc-shaped inner surface of the first main sealing ring 310 and covers no more than half of the arc-shaped inner surface of the first main sealing ring 310. When the sealing assembly 300 is deformed by the male housing 110, the third skirt 321 opens and disengages from the first main sealing ring 310, allowing the inner ring of the first main sealing ring 310 to abut against the inner wall of the mating groove. Providing the third skirt 321 only at one end of the second main sealing ring 320 saves costs and facilitates the distinction between the first and second main sealing rings 310. The third skirt 321 only needs to form a double seal on the side of the first main sealing ring 310 near the male end; the sealing assembly 300 and the female housing 210 are mainly sealed by the inner ring of the first main sealing ring 310. In some other embodiments, the inner ring of the second main sealing ring 320 may extend outward from both ends along its axial direction by a third skirt 321, so that in the initial state, the inner ring arc surface of the first main sealing ring 310 is covered by the two third skirts 321 of the two adjacent second main sealing rings 320.

[0044] In this embodiment, the sealing assembly 300 further includes two end sealing rings 330. The two end sealing rings 330 are located at both ends of the distribution direction of the plurality of first main sealing rings 310 and the plurality of second main sealing rings 320, respectively. One side of the end sealing ring 330 is an inclined surface that fits against the first main sealing ring 310 or the second main sealing ring 320, and the other side is a flat surface for abutting against the end face of the female housing 210 or the male housing 110. Specifically, the end sealing ring 330 can be made by bisecting the first main sealing ring 310 or the second main sealing ring 320 along a cross section perpendicular to its axial direction. When the first main sealing ring 310 is located at the outermost edge, the adjacent end sealing ring 330 is half of the second main sealing ring 320. The outer ring of the end sealing ring 330 is an arc surface and is wrapped and fitted by the first skirt 311 or the second skirt 312 of the adjacent first main sealing ring 310. When the second main sealing ring 320 is located at the outermost edge, the adjacent end sealing ring 330 is half of the first main sealing ring 310. The inner ring of the end sealing ring 330 is arc-shaped and can be wrapped and fitted by the third skirt 321 of the adjacent second main sealing ring 320. The end sealing ring 330 mainly uses its flat surface to abut against the end faces of the male housing 110 and the female housing 210 to ensure the sealing effect.

[0045] In some other embodiments, the plurality of first main sealing rings 310, the plurality of second main sealing rings 320 and the two end sealing rings 330 of the sealing assembly 300 can also be integrally formed, or they can be heat-fused together after being processed separately. The sealing effect is better than simply stacking and pressing them together. However, the first skirt 311, the second skirt 312 and the third skirt 321 are not easy to process and require additional cutting processes. Therefore, the integrally formed sealing assembly 300 can optionally be provided with the first skirt 311, the second skirt 312 and the third skirt 321.

[0046] In this embodiment, both the first main sealing ring 310 and the second main sealing ring 320 are provided with a receptacle hole connecting their two axial ends. In the initial state, the receptacle holes on the first main sealing ring 310 and the second main sealing ring 320 are connected to form a receptacle channel for introducing a heat-conducting medium. When the sealing assembly 300 is deformed by the male housing 110, the receptacle holes on the first main sealing ring 310 and the second main sealing ring 320 are staggered. Specifically, the end sealing ring 330 near the female end has a blind hole that communicates with the receptacle hole on the adjacent first main sealing ring 310 or second main sealing ring 320, and the end sealing ring 330 near the male end has a through hole along its axial direction. In the initial state, the receptacle channel communicates with the through hole and the blind hole, and the heat-conducting medium is introduced into the receptacle channel through the through hole on one of the end sealing rings 330. The thermally conductive medium can be silicone grease, which not only provides sealing and hydrophobic effects but also conducts heat, preventing heat buildup inside the sealing component 300 and affecting its sealing performance.

[0047] In this embodiment, the male end also includes a first crimp terminal 130. The first crimp terminal 130 is sleeved on the end of the first wire 120 and is electrically connected and crimped to the first wire 120. After being inserted into the male housing 110, it abuts against the stepped surface reserved in the male housing 110 in the opposite direction, preventing the first wire 120 from detaching from the male housing 110.

[0048] In this embodiment, a fixing cylinder 240 is fixed inside the female housing 210, and the fixing cylinder 240 is located inside the range defined by the mating groove. The female end also includes a second crimping terminal 230, which is sleeved on the end of the second wire 220 and electrically connected and crimped with the second wire 220. After being inserted into the female housing 210, it abuts against the stepped surface reserved inside the female housing 210 in the opposite direction, preventing the second wire 220 from detaching from the female housing 210. One end of the second crimping terminal 230 extends into the fixing cylinder 240 and is inserted into and electrically connected with the first crimping terminal 130 of the male end inside the fixing cylinder 240. Preferably, the fixing cylinder 240 is made of an insulating and high-temperature resistant material. The first wire terminal 130 and the second wire terminal 230 are both existing technologies. When using them, the insulating sheets at the ends of the first wire 120 and the second wire 220 need to be stripped off firstly, and the first wire terminal 130 and the second wire terminal 230 are respectively fitted onto the exposed conductive cores at the ends of the first wire 120 and the second wire 220. The wire terminals are then crimped together with tools to fix the first wire terminal 130 and the first wire 120 and make them conductive, and to fix the second wire terminal 230 and the second wire 220 and make them conductive. Both the first wire terminal 130 and the second wire terminal 230 are provided with two outwardly open spring tabs. Both the male housing 110 and the female housing 210 are provided with stepped surfaces for contacting the spring tabs. When the first wire terminal 130 enters the male housing 110, the hole in the male housing 110 squeezes the two spring tabs together. After the spring tabs pass through the hole, they open and press against the stepped surface, preventing the first wire terminal 130 from separating from the male housing 110, and thus preventing the first wire 120 from separating from the male housing 110. The same principle applies to the engagement between the second wire terminal 230 and the female housing 210.

[0049] In this embodiment, a first waterproof shell 140 is provided at the end of the male shell 110 away from the female shell 210. The first waterproof shell 140 covers the end of the male shell 110. A first wire 120 passes through the first waterproof shell 140 and is inserted into the male shell 110, and a first waterproof plug 150 is provided between the first wire 120 and the first waterproof shell 140. The first waterproof shell 140 is detachably installed on the male shell 110 to allow the first wire 120 to pass through and to install a first wire terminal 130 at the end of the first wire 120. After the first waterproof shell 140 is installed on the male shell 110, it can prevent water from entering the interior of the male shell 110 from the end.

[0050] In this embodiment, a second waterproof shell 250 is provided at the end of the female shell 210 away from the male shell 110. The second waterproof shell 250 covers the end of the female shell 210. The second wire 220 passes through the second waterproof shell 250 and is inserted into the female shell 210, with a second waterproof plug 260 provided between it and the second waterproof shell 250. The second waterproof shell 250 is detachably installed on the female shell 210 to allow the second wire 220 to pass through and to install a second wire terminal 230 at the end of the second wire 220. After the second waterproof shell 250 is installed on the female shell 210, it can prevent water from entering the interior of the female shell 210 from the end. The first waterproof plug 150 and the second waterproof plug 260 are both prior art and can be sealing rings made of polymer materials, rubber, or silicone.

[0051] In this embodiment, a booster block is provided outside the male housing 110 and / or the female housing 210.

[0052] Before connecting the male and female ends, the pull-out resistant waterproof connector of the present invention requires first inserting the first wire 120 into the male housing 110 and the second wire 220 into the female housing 210. Specifically, the insulation of the end of the first wire 120 is peeled off, and the first waterproof plug 150 and the first crimp terminal 130 are sequentially fitted on. Preferably, the first waterproof plug 150 can be used to seal the connection position between the insulation of the first wire 120 and the conductive core. After fitting one end of the first crimp terminal 130 onto the end of the first waterproof plug 150, the first crimp terminal 130 is squeezed so that the first crimp terminal 130 not only presses the first waterproof plug 150, but also presses the conductive core of the first wire 120 and is electrically connected to the first wire 120. The first crimp terminal 130 extends beyond the first wire 120. Alternatively, the first waterproof plug 150 may be fitted only over the insulation of the first conductor 120, and one end of the first crimp terminal 130 may be crimped only at the connection point between the insulation of the first conductor 120 and the conductive core. After crimping, the first conductor 120 and the first crimp terminal 130 are inserted through the first waterproof shell 140 into the male shell 110, and the first waterproof plug 150 seals the space between the first waterproof shell 140 and the first conductor 120. After the first crimp terminal 130 enters the male shell 110, its spring contact abuts against the stepped surface inside the male shell 110, preventing the first crimp terminal 130 from detaching from the male shell 110, and thus preventing the first conductor 120 from detaching from the male shell 110. The installation of the second conductor 220, the second crimp terminal 230, and the second waterproof plug 260 is similar and will not be described in detail. The only difference is that the end of the second crimp terminal 230 is inserted into the fixing cylinder 240 inside the female shell 210.

[0053] Then, the end sealing ring 330, the first main sealing ring 310, and the second main sealing ring 320 of the sealing assembly 300 are sequentially fitted into the mating groove of the mother shell 210. The first main sealing ring 310 and the second main sealing ring 320 are alternately fitted, and the two end sealing rings 330 are located on both sides of the plurality of first main sealing rings 310 and the plurality of second main sealing rings 320, respectively. In the initial state, the fluid holes on the first main sealing rings 310 and the second main sealing rings 320 are connected to form a fluid channel, and the fluid channel is connected to the through holes and blind holes on the two end sealing rings 330. The heat-conducting medium is introduced into the fluid channel through the through holes. Then, the male and female ends are brought close together, and the first crimp terminal 130 is inserted into the second crimp terminal 230 inside the fixed cylinder 240. At the same time, the outer wall of the male housing 110 is inserted between the outer wall of the sealing assembly 300 and the outer wall of the female housing 210. One end face of the male housing 110 presses against the sealing assembly 300, so that the first main sealing ring 310 and the second main sealing ring 320 are pressed against each other along the inclined surface of the mating side. The thicker inner ring of the first main sealing ring 310 is pressed to be thicker, and the thinner outer ring is pressed to be flatter. The thicker outer ring of the second main sealing ring 320 is pressed to be thicker, and the thinner inner ring is pressed to be flatter. The thicker inner ring of the first main sealing ring 310 abuts against the inner wall of the mating groove, and the thicker outer ring of the second main sealing ring 320 abuts against the side wall of the end of the male housing 110, which increases the contact area of ​​the sealing position and improves the sealing effect. As the first main sealing ring 310 and the second main sealing ring 320 deform, the first skirt 311, the second skirt 312, and the third skirt 321 all open and abut against the inner ring sidewall of the mating groove and the inner wall surface of the male housing 110, respectively, to achieve a double seal and further improve the sealing effect. In addition, the receptacles on the first main sealing ring 310 and the second main sealing ring 320 are misaligned, allowing some heat-conducting medium to enter between the end faces of the first main sealing ring 310 and the second main sealing ring 320, forming a triple seal and providing a heat dissipation effect. When the male and female ends are inserted into place, the snap-fit ​​components on the male housing 110 and the female housing 210 engage, preventing the male and female ends from disengaging, thus completing the connection between the male and female ends.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pull-out resistant waterproof connector, characterized in that: Includes male, female, and sealing components; The male end includes a male housing and a first wire installed inside the male housing at one end; The female end includes a female housing and a second wire installed inside the female housing at one end; the female housing has an annular mating groove for insertion into the outer housing, and the axis of the mating groove is parallel to the insertion direction of the male end and the female end; The sealing assembly includes a plurality of first main sealing rings and a plurality of second main sealing rings that are sleeved in the mating groove and alternately distributed along the axial direction of the mating groove. The inner ring thickness of the first main sealing ring is greater than the outer ring thickness, and the inner ring thickness of the second main sealing ring is less than the outer ring thickness. The inner ring of the first main sealing ring is smaller than the inner ring of the second main sealing ring, and the outer ring of the first main sealing ring is larger than the outer ring of the second main sealing ring. The male housing has a stepped end and is inserted between the outer ring wall of the mating groove and the sealing component. The end face of the stepped surface of the male housing is deformed along the axial direction of the mating groove by pressing the sealing component, so that the inner ring of the first main sealing ring abuts against the inner ring wall of the mating groove, and the outer ring of the second main sealing ring abuts against the inner wall of the male housing. The two ends of the multiple first main sealing rings and multiple second main sealing rings in the axial direction of the mating groove are sealed at the other end face of the stepped surface of the male housing and the bottom surface of the mating groove, respectively. After insertion, the male and female housings are connected by snap-fit ​​components on both.

2. The pull-out resistant waterproof connector according to claim 1, characterized in that: The outer side of the second main sealing ring is curved. The outer ring of the first main sealing ring extends outward from both ends along its axial direction with a first skirt and a second skirt, respectively. The first skirt and the second skirt are made of the same material as the first main sealing ring. In the initial state, the curved surface of the outer ring of the second main sealing ring is wrapped by the first skirt and the second skirt of the two adjacent first main sealing rings. When the sealing assembly is squeezed and deformed by the male housing, the first skirt and the second skirt open so that the outer ring of the second main sealing ring abuts against the male housing.

3. The pull-out resistant waterproof connector according to claim 1, characterized in that: The inner side of the first main sealing ring is an arc surface. The inner ring of the second main sealing ring extends outward along its axial direction away from the male housing with a third skirt. In the initial state, the third skirt fits into the arc surface of the inner ring of the first main sealing ring. When the sealing assembly is squeezed and deformed by the male housing, the third skirt opens and separates from the first main sealing ring, allowing the inner ring of the first main sealing ring to abut against the inner wall of the mating groove.

4. A pull-out resistant waterproof connector according to claim 1, characterized in that: The sealing assembly also includes two end sealing rings, which are located at both ends of the distribution direction of the plurality of first main sealing rings and the plurality of second main sealing rings, respectively. One side of the end sealing ring is an inclined surface that fits against the first main sealing ring or the second main sealing ring, and the other side is a flat surface for abutting against the end face of the female shell or the male shell.

5. A pull-out resistant waterproof connector according to claim 1, characterized in that: Both the first and second main sealing rings are provided with a receptacle hole connecting their two axial ends; in the initial state, the receptacle holes on the first and second main sealing rings are connected to form a receptacle channel for introducing a heat-conducting medium; when the sealing assembly is deformed by the male housing, the receptacle holes on the first and second main sealing rings are staggered.

6. A pull-out resistant waterproof connector according to claim 1, characterized in that: The male end also includes a first crimp terminal, which is sleeved on the end of the first wire and electrically connected to and crimped with the first wire. After being inserted into the male housing, the first crimp terminal abuts against the stepped surface reserved inside the male housing in the opposite direction, preventing the first wire from detaching from the male housing.

7. A pull-out resistant waterproof connector according to claim 6, characterized in that: A fixing cylinder is fixed inside the female housing, and the fixing cylinder is located inside the range defined by the mating groove; the female end also includes a second crimping terminal, which is sleeved on the end of the second wire and electrically connected and crimped with the second wire, and after being inserted into the female housing, it abuts against the stepped surface reserved in the female housing in the opposite direction, preventing the second wire from detaching from the female housing; one end of the second crimping terminal extends into the fixing cylinder and is inserted into the first crimping terminal of the male end in the fixing cylinder and electrically connected.

8. A pull-out resistant waterproof connector according to claim 1, characterized in that: A first waterproof shell is provided at the end of the male shell away from the female shell. The first waterproof shell covers the end of the male shell. The first wire passes through the first waterproof shell and is inserted into the male shell. A first waterproof plug is provided between the wire and the first waterproof shell.

9. A pull-out resistant waterproof connector according to claim 1, characterized in that: A second waterproof shell is provided at the end of the female shell away from the male shell. The second waterproof shell covers the end of the female shell. The second wire passes through the second waterproof shell and is inserted into the female shell. A second waterproof plug is provided between the wire and the second waterproof shell.

10. A pull-out resistant waterproof connector according to claim 1, characterized in that: A booster block is provided on the outside of the male and / or female shells.

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