Waterproof connector housing

Abstract

The present invention relates to the technical field of connectors, and provides a waterproof connector housing comprising a first cylinder with external threads, a second cylinder, a third cylinder with internal threads, and an elastic cylinder; one end of the second cylinder has internal threads, and the other end of the second cylinder has external threads; the external threads of the first cylinder are threadedly connected with the internal threads of the second cylinder and are interconnected; a first annular groove is provided on the inner wall of the second cylinder, and a first sealing ring is provided in the first annular groove; the first sealing ring is sleeved on the second cylinder; the external threads of the second cylinder are threadedly connected with the internal threads of the third cylinder and are interconnected, a first convex portion is convexly formed on the inner wall of the third cylinder, two ends of the elastic cylinder are clamped between the first convex portion and the end face of the second cylinder, and a second sealing ring is clamped between the second cylinder and the end face of the elastic cylinder. Both the first cylinder and the second cylinder, and the second cylinder and the elastic cylinder are well sealed.

Description

Technical Field

[0001] The invention belongs to the technical field of connectors, and more specifically, relates to a waterproof connector housing. Background Art

[0002] In modern devices, connectors (connectors: used to conduct circuits and / or detachably connect different components) are widely used. In order to improve the convenience of installation and removal, the connector shell is usually spliced ​​in multiple sections, but the spliced ​​connectors are prone to water leakage at the splicing position. Summary of the invention

[0003] The object of the present invention is to provide a waterproof connector housing to solve the technical problem in the prior art that water ingress and leakage easily occur at the splicing position of the spliced ​​connectors.

[0004] To achieve the above object, the technical solution adopted by the present invention is: to provide a waterproof connector housing including a first cylinder with external threads, a second cylinder, a third cylinder with internal threads, and an elastic cylinder; one end of the second cylinder has internal threads, and the other end of the second cylinder has external threads;

[0005] The external thread of the first cylinder is threadably connected with the internal thread of the second cylinder and communicates with each other; a first annular groove is provided on the inner wall of the second cylinder, and a first sealing ring is provided in the first annular groove; when the external thread of the first cylinder is matched with the internal thread of the second cylinder and screwed into a predetermined position in the second cylinder, the first sealing ring is sleeved on the first cylinder;

[0006] The external thread of the second cylinder is threadably connected with the internal thread of the third cylinder and communicated with each other. The elastic cylinder is arranged in the third cylinder and extends along the axial direction of the second cylinder. The inner wall of the third cylinder is convexly provided with a first protrusion. The two ends of the elastic cylinder are clamped between the first protrusion and the end face of the second cylinder. A second sealing ring is clamped between the end faces of the elastic cylinder and the second cylinder to seal the gap between the end faces of the elastic cylinder and the second cylinder.

[0007] Furthermore, the first annular groove is adjacent to the internal thread of the second cylinder.

[0008] Further, in the screwing direction of the first cylinder, the surface of the first cylinder in front of the external thread of the first cylinder is a cylindrical surface.

[0009] Furthermore, a second protrusion is formed on the inner wall of the second cylinder; in the screwing direction of the first cylinder, the second protrusion is located downstream of the internal thread of the second cylinder.

[0010] Furthermore, a second annular groove is provided on the elastic cylinder, and the second sealing ring is clamped in the second annular groove.

[0011] Further, in a direction extending along the axis of the second cylinder and away from the second cylinder, the first protrusion has a stop wall bent toward the axis of the second cylinder, and the elastic cylinder is clamped between the stop wall and the second cylinder.

[0012] Furthermore, a notch extending along the axis direction of the elastic cylinder is provided on a side wall of one end of the elastic cylinder close to the stop wall.

[0013] Furthermore, a third sealing ring is arranged in the elastic cylinder, and an outer side wall of the third sealing ring is attached to the inner wall of the elastic cylinder.

[0014] Furthermore, it also includes a fourth cylinder, the first cylinder is detachably mounted on the fourth cylinder and the two are interconnected, the fourth cylinder is provided with a third annular groove arranged on the outer surface of the fourth cylinder, a fourth sealing ring is provided in the third annular groove, and the fourth sealing ring is clamped between the inner wall of the first cylinder and the inner wall of the third annular groove; the fourth cylinder is provided with a hook body, and the first cylinder is provided with a recessed portion for the hook body to hook.

[0015] Furthermore, the recessed portion is a groove arranged on the outer surface of the first cylinder.

[0016] The beneficial effects of the waterproof connector housing provided by the present invention are as follows: compared with the prior art, the waterproof connector housing provided by the present invention has a first barrel and a second barrel connected by threads to achieve mutual fixation / mutual separation, and the first barrel and the second barrel are connected to each other for the wire to pass through; a first annular groove is provided on the inner wall of the second barrel, and a first sealing ring is provided in the first annular groove; when the first barrel is screwed into the second barrel to a predetermined position, the first sealing ring is sleeved on the first barrel, so that the first sealing ring seals the gap between the outer wall of the first barrel and the inner wall of the second barrel, thereby preventing leakage in the gap between the first barrel and the second barrel; the outer thread of the second barrel is threadedly connected to the inner thread of the third barrel, and the second barrel and the third barrel are connected by threads. The bodies are interconnected for the wire to pass through; the elastic cylinder is arranged in the third cylinder, and the wire can pass through the second cylinder, the elastic cylinder and the third cylinder in sequence; a first protrusion is formed on the inner wall of the third cylinder, and the elastic cylinder is clamped between the second cylinder and the first protrusion. When the user tightens the third cylinder, the elastic cylinder is pressed against the second cylinder through the first protrusion, and the second cylinder and the third cylinder are sealed by the second sealing ring, that is, the elastic cylinder can maintain the sealing state between the elastic cylinder and the second cylinder under the pressure of the first protrusion, thereby avoiding leakage between the second cylinder and the elastic cylinder; in summary, both the first cylinder and the second cylinder, as well as the second cylinder and the elastic cylinder, are well sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the installation of a first cylinder, a second cylinder and a third cylinder provided in an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the installation of an axial cross-sectional view (based on the axis of the first cylinder) of the first cylinder, the second cylinder and the third cylinder provided in an embodiment of the present invention;

[0020] Figure 3 An installation schematic diagram of an axial cross-sectional view (based on the axis of the first cylinder) of a first cylinder and a second cylinder provided in an embodiment of the present invention;

[0021] Figure 4 An axial cross-sectional view (based on the axis of the second cylinder) of the second cylinder provided by an embodiment of the present invention is an installation schematic diagram;

[0022] Figure 5An axial cross-sectional view (based on the axis of the first cylinder) of the first cylinder provided by an embodiment of the present invention is an installation schematic diagram;

[0023] Figure 6 A schematic diagram of the installation of the second cylinder and the third cylinder provided in an embodiment of the present invention;

[0024] Figure 7 A schematic diagram of the installation of the axial cross-section of the second cylinder and the third cylinder (based on the axis of the second cylinder) provided in an embodiment of the present invention;

[0025] Figure 8 A schematic diagram of the three-dimensional installation of the second cylinder and the elastic cylinder provided in an embodiment of the present invention;

[0026] Fig. 9 A schematic diagram of the three-dimensional installation of the elastic cylinder and the third sealing ring provided in an embodiment of the present invention;

[0027] Fig.10 A three-dimensional schematic diagram of an elastic cylinder provided in an embodiment of the present invention;

[0028] Fig.11 A three-dimensional schematic diagram of a third cylinder provided in an embodiment of the present invention;

[0029] Fig.12 A schematic diagram of the installation of the axial cross-section (based on the axis of the first cylinder) of the first cylinder and the fourth cylinder provided in an embodiment of the present invention;

[0030] Fig.13 A schematic installation diagram of an axial cross section of a fourth cylinder (based on the axis of the fourth cylinder) provided in an embodiment of the present invention.

[0031] Among them, the reference numerals in the figure are:

[0032] 11-first cylinder; 111-recess; 12-second cylinder; 121-first annular groove; 122-second protrusion; 13-third cylinder; 131-first protrusion; 1311-stop wall; 14-elastic cylinder; 141-notch; 142-second annular groove; 15-fourth cylinder; 151-third annular groove; 21-first sealing ring; 22-second sealing ring; 23-third sealing ring; 24-fourth sealing ring; 3-hook body. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] Please also read Figures 1 to 5 The waterproof connector housing provided by the present invention is now described. The waterproof connector housing comprises a first barrel 11 with external threads (barrel: a tubular object with a through hole; optionally, in one embodiment, the barrel is a cylinder; specifically, in one embodiment, the axis of the cylinder is a straight line), a second barrel 12, a third barrel 13 with internal threads, and an elastic barrel 14; one end of the second barrel 12 has an internal thread, and the other end of the second barrel 12 has an external thread; the external thread of the first barrel 11 is threadedly connected with the internal thread of the second barrel 12 and communicates with each other; the second barrel 12 A first annular groove 121 is provided on the inner wall of the first cylinder 11, and a first sealing ring 21 is provided in the first annular groove 121; when the external thread of the first cylinder 11 cooperates with the internal thread of the second cylinder 12 and is screwed into a predetermined position in the second cylinder 12, the first sealing ring 21 is sleeved on the first cylinder 11; the external thread of the second cylinder 12 is threadedly connected with the internal thread of the third cylinder 13 and communicated with each other, the elastic cylinder 14 is arranged in the third cylinder 13 and extends along the axial direction of the second cylinder 12, and the inner wall of the third cylinder 13 is convexly formed with a first protrusion 131, and both ends of the elastic cylinder 14 are clamped between the first protrusion 131 and the end face of the second cylinder 12, and a second sealing ring 22 is clamped between the end faces of the elastic cylinder 14 and the second cylinder 12 to seal the gap between the end faces of the elastic cylinder 14 and the second cylinder 12.

[0038] In this way, the first cylinder 11 and the second cylinder 12 are threadedly connected to achieve mutual fixation / mutual separation, and the first cylinder 11 and the second cylinder 12 are connected to each other for the wire to pass through; a first annular groove 121 is provided on the inner wall of the second cylinder 12, and a first sealing ring 21 is provided in the first annular groove 121; when the first cylinder 11 is screwed into the second cylinder 12 to a predetermined position, the first sealing ring 21 is sleeved on the first cylinder 11, so that the first sealing ring 21 seals the gap between the outer wall of the first cylinder 11 and the inner wall of the second cylinder 12, thereby preventing leakage in the gap between the first cylinder 11 and the second cylinder 12; the external thread of the second cylinder 12 is threadedly connected with the internal thread of the third cylinder 13, and the second cylinder 12 and the third cylinder are connected. The third cylinder 13 is interconnected for the wire to pass through; the elastic cylinder 14 is arranged in the third cylinder 13, and the wire can pass through the second cylinder 12, the elastic cylinder 14 and the third cylinder 13 in sequence; a first protrusion 131 is formed on the inner wall of the third cylinder 13, and the elastic cylinder 14 is clamped between the second cylinder 12 and the first protrusion 131. When the user tightens the third cylinder 13, the elastic cylinder 14 is pressed against the second cylinder 12 through the first protrusion 131, and the second cylinder 12 and the third cylinder 13 are sealed by the second sealing ring 22, that is, the elastic cylinder 14 can maintain the sealing state between the elastic cylinder 14 and the second cylinder 12 under the pressure of the first protrusion 131, avoiding the second cylinder 12 and the elastic cylinder 14 Leakage occurs between them; in summary, both the first cylinder 11 and the second cylinder 12, as well as the second cylinder 12 and the elastic cylinder 14 are well sealed; in addition, the elastic cylinder 14 itself has elasticity, and when the elastic cylinder 14 is pressed against the second cylinder 12 by the first protrusion 131, it is not easy for the elastic cylinder 14 and the second cylinder 12 to loosen, thereby ensuring the stability of the seal between the second cylinder 12 and the elastic cylinder 14.

[0039] For further information, see Figure 4 As a specific embodiment of the waterproof connector housing provided by the present invention, the first annular groove 121 is adjacent to the internal thread of the second barrel 12. In this way, when the first barrel 11 is screwed into the second barrel 12, once the first barrel 11 passes over (passes: the first barrel 11 partially / completely passes over) the internal thread, it can reach the first annular groove 121, so that the first sealing ring 21 in the first annular groove 121 can be sleeved on the first barrel 11 at the first time.

[0040] For further information, see Figure 3As a specific embodiment of the waterproof connector housing provided by the present invention, in the screwing direction of the first barrel 11, the surface of the first barrel 11 in front of the external thread of the first barrel 11 is a cylindrical surface. In this way, when the first barrel 11 is screwed into the second barrel 12, the cylindrical surface in front of the external thread first contacts the first sealing ring 21 in the second barrel 12, and the sealing effect of the first sealing ring 21 contacting the above cylindrical surface is better, and it is not easy to generate a gap between the first sealing ring 21 and the first barrel 11.

[0041] For further information, see Figures 1 to 5 As a specific embodiment of the waterproof connector housing provided by the present invention, the inner wall of the second barrel 12 is convexly provided with a second protrusion 122; in the screwing direction of the first barrel 11, the second protrusion 122 is located downstream of the internal thread of the second barrel 12. In this way, when the first barrel 11 is screwed into the second barrel 12 and passes over (passing: the first barrel 11 partially / completely passes over) the internal thread, the second protrusion 122 can limit the first barrel 11 to prevent the first barrel 11 from being screwed in too much.

[0042] For further information, see Figures 6 to 11 As a specific embodiment of the waterproof connector housing provided by the present invention, a second annular groove 142 is provided on the elastic cylinder 14, and the second sealing ring 22 is clamped in the second annular groove 142. In this way, the second sealing ring 22 is clamped in the second annular groove 142 more firmly.

[0043] For further information, see Figures 6 to 11 As a specific embodiment of the waterproof connector housing provided by the present invention, in the direction extending along the axis of the second cylinder 12 and away from the second cylinder 12, the first protrusion 131 has a stop wall 1311 bent toward the axis of the second cylinder 12, and the elastic cylinder 14 is clamped between the stop wall 1311 and the second cylinder 12. In this way, the wire passes through the second cylinder 12, the elastic cylinder 14 and the third cylinder 13 in sequence; the elastic cylinder 14 is clamped between the stop wall 1311 and the second cylinder 12, and when the third cylinder 13 is locked, the stop wall 1311 approaches the second cylinder 12 along with the third cylinder 13; because the stop wall 1311 bends toward the axis of the second cylinder 12 in the direction extending along the axis of the second cylinder 12 and away from the second cylinder 12, that is, the part of the stop wall 1311 that is farther away from the second cylinder 12 is closer to the axis of the second cylinder 12; when the stop wall 1311 approaches the second cylinder 12, the stop wall 1311 squeezes the elastic cylinder 14 toward the axis of the second cylinder 12, so that the contact between the wires passing through the elastic cylinder 14 is closer, the looseness of the wires is reduced, and the sealing is improved.

[0044] Specifically, in one embodiment, the elastic cylinder 14 is made of elastic material PA66 (polyhexamethylene adipamide).

[0045] For further information, see Figures 6 to 11 As a specific embodiment of the waterproof connector housing provided by the present invention, a notch 141 extending along the axis direction of the elastic cylinder 14 is provided on the side wall of the elastic cylinder 14 near the end of the stop wall 1311. In this way, when the stop wall 1311 presses the elastic cylinder 14 toward the axis direction of the second cylinder 12, the notch 141 can release the pressure on the elastic cylinder 14, so that the elastic cylinder 14 can be deformed.

[0046] Optionally, in one embodiment, the number of the notches 141 is multiple, and the multiple notches 141 are evenly spaced along the circumferential direction of the elastic cylinder 14. In this way, the multiple notches 141 provide the elastic cylinder 14 with multiple pressure release points. The multiple notches 141 can evenly release the pressure on the elastic cylinder 14.

[0047] Optionally, in one embodiment, a third protrusion protruding toward the inside of the elastic cylinder 14 is provided on the inner wall of the elastic cylinder 14 between two adjacent notches 141. In this way, when the elastic cylinder 14 deforms and drives the third protrusion to move toward the inside of the elastic cylinder 14, the third protrusion is in closer contact with the wire inside the elastic cylinder 14; in addition, the third protrusion can also limit the third sealing ring 23 inside the elastic cylinder 14.

[0048] For further information, see Figures 6 to 11 As a specific embodiment of the waterproof connector housing provided by the present invention, a third sealing ring 23 is provided in the elastic cylinder 14, and the outer wall of the third sealing ring 23 is attached to the inner wall of the elastic cylinder 14. In this way, the third sealing ring 23 is sleeved on the wire passing through the elastic cylinder 14 to improve the sealing performance and reduce the water passing through the elastic cylinder 14.

[0049] For further information, see Figures 1 to 13As a specific embodiment of the waterproof connector housing provided by the present invention, it also includes a fourth cylinder 15, the first cylinder 11 is detachably mounted on the fourth cylinder 15 and connected to each other, the fourth cylinder 15 is provided with a third annular groove 151 arranged on the outer surface of the fourth cylinder 15, a fourth sealing ring 24 is arranged in the third annular groove 151, and the fourth sealing ring 24 is clamped between the inner wall of the first cylinder 11 and the inner wall of the third annular groove 151; the fourth cylinder 15 is provided with a hook body 3, and the first cylinder 11 is provided with a recessed portion 111 for the hook body 3 to hook. In this way, when the first cylinder 11 is sleeved on the fourth cylinder 15, the fourth cylinder 15 and the first cylinder 11 are connected to allow the wire to pass through; a third annular groove 151 is arranged on the outer surface of the fourth cylinder 15, and a fourth sealing ring 24 is arranged in the third annular groove 151. The fourth sealing ring 24 is clamped between the inner wall of the first cylinder 11 and the inner wall of the third annular groove 151 to achieve the sealing between the fourth cylinder 15 and the first cylinder 11; a hook body 3 is arranged on the fourth cylinder 15, and a recessed portion 111 is arranged on the first cylinder 11. The hook body 3 hooks the recessed portion 111 to prevent the fourth cylinder 15 and the first cylinder 11 from separating, thereby ensuring the stability of the sealing between the fourth cylinder 15 and the first cylinder 11.

[0050] Optionally, in one embodiment, the hook body 3 is a barb.

[0051] Optionally, in one embodiment, the first cylinder 11 , the second cylinder 12 , the third cylinder 13 , and the fourth cylinder 15 are respectively made of copper.

[0052] For further information, see Figures 1 to 13 As a specific embodiment of the waterproof connector housing provided by the present invention, the recessed portion 111 is a groove arranged on the outer surface of the first cylinder 11. In this way, the hook body 3 can be hooked at different positions of the groove to fix the fourth cylinder 15 and the first cylinder 11.

[0053] Optionally, in one embodiment, the number of hook bodies 3 is plural.

[0054] Optionally, in one embodiment, the first sealing ring 21, the second sealing ring 22, the third sealing ring 23, and the fourth sealing ring 24 are distributed as an integral piece made of silicone. In this way, the silicone has good elasticity and is wear-resistant.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waterproof connector housing, characterized in that: It comprises a first cylinder with external threads, a second cylinder, a third cylinder with internal threads, and an elastic cylinder; one end of the second cylinder has internal threads, and the other end of the second cylinder has external threads; The external thread of the first cylinder is threadably connected with the internal thread of the second cylinder and communicates with each other; a first annular groove is provided on the inner wall of the second cylinder, and a first sealing ring is provided in the first annular groove; when the external thread of the first cylinder is matched with the internal thread of the second cylinder and screwed into a predetermined position in the second cylinder, the first sealing ring is sleeved on the first cylinder; The external thread of the second cylinder is threadably connected with the internal thread of the third cylinder and communicates with each other. The elastic cylinder is arranged in the third cylinder and extends along the axial direction of the second cylinder. The inner wall of the third cylinder is convexly provided with a first protrusion. Both ends of the elastic cylinder are clamped between the first protrusion and the end surface of the second cylinder. A second sealing ring is clamped between the end surfaces of the elastic cylinder and the second cylinder to seal the gap between the end surfaces of the elastic cylinder and the second cylinder. A second annular groove is arranged on the elastic cylinder, and the second sealing ring is clamped in the second annular groove. In a direction extending along the axis of the second cylinder and away from the second cylinder, the first protrusion has a stop wall bent toward the axis of the second cylinder, and the elastic cylinder is clamped between the stop wall and the second cylinder; a notch extending along the axis of the elastic cylinder is provided on a side wall of the elastic cylinder close to one end of the stop wall; There are multiple notches, and the multiple notches are evenly spaced along the circumferential direction of the elastic cylinder; the multiple notches can evenly release the pressure on the elastic cylinder; a third protrusion protruding toward the inner side of the elastic cylinder is provided on the inner wall of the elastic cylinder between two adjacent notches; when the elastic cylinder is deformed and drives the third protrusion to move toward the inner side of the elastic cylinder, the third protrusion can be in closer contact with the wire in the elastic cylinder; a third sealing ring is provided in the elastic cylinder, and the outer side wall of the third sealing ring is attached to the inner wall of the elastic cylinder; the third protrusion can also limit the third sealing ring in the elastic cylinder; It also includes a fourth cylinder, on which the first cylinder is detachably mounted and connected, and the fourth cylinder is provided with a third annular groove arranged on the outer surface of the fourth cylinder, a fourth sealing ring is provided in the third annular groove, and the fourth sealing ring is clamped between the inner wall of the first cylinder and the inner wall of the third annular groove; a hook is provided on the fourth cylinder, and a recessed portion for the hook to hook is provided on the first cylinder.

2. The waterproof connector housing according to claim 1, characterized in that: The first annular groove is adjacent to the internal thread of the second cylinder.

3. The waterproof connector housing according to claim 1, characterized in that: In the screwing direction of the first cylinder, the surface of the first cylinder in front of the external thread of the first cylinder is a cylindrical surface.

4. The waterproof connector housing according to claim 1, characterized in that: A second protrusion is formed on the inner wall of the second cylinder; in the screwing direction of the first cylinder, the second protrusion is located downstream of the internal thread of the second cylinder.

5. The waterproof connector housing according to claim 1, characterized in that: The recessed portion is a clamping groove arranged on the outer surface of the first cylinder.

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