Circular connector and connecting cable assembly

Abstract

The utility model provides a circular connector and a connecting cable assembly, the circular connector comprises a female end connector and a male end connector, the circular connector is provided with a threaded connection structure and comprises a female end core column assembly and a male end core column, and the female end core column assembly comprises a female end core column, a sealing element and a connecting nut; an external thread area is arranged on the radial outer side of one end of the male end core column, an internal thread area is arranged at one end of the connecting nut, the starting position of an internal thread of the internal thread area is determined to be at the same position in the circumferential direction, and the starting position of an external thread of the external thread area is also determined to be at the same position in the circumferential direction. A first marking part is arranged on the radial outer side of the connecting nut corresponding to the initial position of the internal thread; a second flange is arranged in the area, close to the external thread, of the male end core column, and a second marking part is arranged on the second flange; when the first marking part and the second marking part are aligned, the fastening torque of the threaded connection structure reaches the specified torque. And an operator only needs to observe whether the first marking part is aligned with the second marking part or not during inspection, so that the visual inspection can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a circular connector and a connecting cable assembly. Background Art

[0002] The sensor / actuator is connected to the controller and / or power supply via a connecting cable with a standardized circular connector to achieve signal and power transmission. Most circular connectors are M12 or M8 circular connectors, which are provided with a connection structure, which includes a threaded sleeve with an external thread and a nut with an internal thread. In order to ensure the torque required for tightening the connection structure, the installer usually needs to manually tighten the threaded sleeve and the nut first, and then use a torque wrench to further tighten the nut, and ensure that the tightening torque meets the standard requirements through the prompts of the torque wrench. Therefore, during the operation of the equipment, the inspectors cannot directly judge whether the tightening torque of the connection structure meets the standard with the naked eye, and often need to manually pull or twist the connection structure for auxiliary detection. The process is cumbersome and the reliability cannot be guaranteed, and the automation of visual inspection cannot be achieved.

[0003] The mixed assembly of the female and male ends of existing circular connector products cannot meet the needs of random matching assembly. The reason is that the starting position of the internal thread of the nut is not fixed, which means that the nut and the threaded sleeve can only be assembled one by one, seriously affecting the assembly efficiency. In addition, the threaded sleeve with external threads is a movable part, which is usually sleeved on the outside of the male end core column. Therefore, the threaded sleeve is easy to rotate during assembly, and the operator cannot accurately judge the degree of tightening. In addition, the operation process is cumbersome and the assembly efficiency is low.

[0004] Based on the above, it is necessary to improve the existing circular connector and its connecting cable assembly. Summary of the invention

[0005] The utility model provides a circular connector and a connecting cable assembly, which can meet the requirement that a female connector and a male connector can still be installed in pairs after being mixed, thereby improving assembly efficiency and realizing visual inspection operation.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A circular connector, comprising a female connector and a male connector that can be plugged into each other, and provided with a threaded connection structure, wherein the threaded connection structure comprises a female stem assembly provided on the female connector and a male stem provided on the male connector, wherein the female stem assembly comprises a female stem, a sealing element, and a connecting nut sleeved on the female stem and the sealing element;

[0008] An external threaded area is provided radially outside one end of the male end stem in the axial direction, and an internal threaded area for being screwed to the external threaded area is provided at one end of the connecting nut in the axial direction, and the starting positions of the internal threads of the internal threaded area are determined at the same position along the circumferential direction, and the starting positions of the external threads of the external threaded area are also determined at the same position along the circumferential direction;

[0009] A first marking portion is provided on the radial outer side of the connecting nut corresponding to the starting position of the internal thread of the internal thread area; a second flange is provided on the male end core column near the external thread area, and a second marking portion is provided on the second flange;

[0010] When the first marking portion is aligned with the second marking portion, the tightening torque of the threaded connection structure reaches a specified torque.

[0011] Furthermore, the first marking portion is provided with a starting end and an ending end, the starting end corresponds to a starting position of an internal thread of the internal thread area, and when the second marking portion is aligned with any position between the starting end and the ending end, the tightening torque of the connecting structure reaches a specified torque.

[0012] Furthermore, the first marking portion is a conical triangle mark, and the second marking portion is a rectangular square mark.

[0013] Furthermore, the female end stem includes a female end stem body and a first flange arranged on the female end stem body, the connecting nut is movably sleeved on the female end stem body along the length direction of the female end stem body and stopped at the first flange, a first wavy surface is arranged on one side of the first flange stopping the connecting nut, and a second wavy surface matching the first wavy surface is arranged on the connecting nut.

[0014] Furthermore, the sealing element is arranged on a side of the first flange away from the first wavy surface and is sandwiched between the female end core column, the male end core column and the connecting nut.

[0015] Furthermore, the sealing element radially seals the connection area between the female end stem and the male end stem on the inner side of the connecting nut.

[0016] Furthermore, the female connector also includes a female pin inserted into the female core column, and the male connector also includes a male pin inserted into the male core column. The female core column is partially inserted into the male core column, and the female pin is electrically connected to the male pin.

[0017] The utility model also provides a connecting cable assembly, comprising the circular connector mentioned above.

[0018] The circular connector provided by the utility model has a threaded connection structure between the female connector and the male connector, the threaded connection structure comprising a connecting nut provided with an internal thread area and a male core column provided with an external thread area, wherein the starting position of the internal thread of the internal thread area and the starting position of the external thread of the external thread area are both determined at the same position along the circumferential direction, and a first marking portion is provided at the outer surface of the connecting nut corresponding to the starting position of the internal thread, and a second marking portion is provided on the male core column, and the first marking portion and the second marking portion are assembled and tightened so that the first marking portion and the second marking portion are aligned, so that the tightening torque requirement of the threaded connection structure can be met, and the operator only needs to observe whether the first marking portion and the second marking portion are aligned during inspection, which is conducive to realizing inspection visualization and is very suitable for narrow space application scenarios.

[0019] The circular connector provided by the utility model has the internal thread starting positions of the connecting nut being determined at the same position, so that the thread starting position and appearance characteristics of each connecting nut unit are kept consistent, thereby achieving that after different batches of female connectors and male connectors are randomly assembled, when the first marking part of the threaded connection structure is aligned with the second marking part, the tightening torque can still reach the specified torque.

[0020] The circular connector provided by the utility model has an outer surface of the male end core column integrally injection-molded with an external thread, which saves the use of a threaded sleeve provided with an external thread, saves the number of parts, and is conducive to reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of a circular connector provided in an embodiment of the present application;

[0022] Figure 2 is a schematic diagram of the exploded structure of a circular connector provided in an embodiment of the present application;

[0023] Figure 3 It is a schematic diagram of the exploded structure of the threaded connection structure provided in an embodiment of the present application;

[0024] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure of a threaded connection structure;

[0025] Figure 5 It is a structural schematic diagram of a threaded connection structure provided in an embodiment of the present application in a connected state;

[0026] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure of the threaded connection structure in the connected state. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] See also Figure 1 and Figure 2 This embodiment provides a circular connector, including a female connector 100 and a male connector 200 that can be plugged into each other. The female connector 100 includes a female conductor 110, a female pin 120, a female core column 130, a connecting nut 140, a sealing element 150, a female rubber coating 160, and a female conductor seal 170; the male connector 200 includes a male conductor 210, a male pin 220, a male core column 230, a male rubber coating 240, and a male conductor seal 250.

[0032] See also Figures 3 to 6The circular connector of this embodiment is provided with a threaded connection structure, which includes a female end stem assembly provided on the female end connector 100 and a male end stem 230 provided on the male end connector 200, wherein the female end stem assembly includes a female end stem 130, a sealing element 150, and a connecting nut 140 sleeved on the female end stem 130 and the sealing element 150. An external threaded area 2302 is provided radially outside one end of the male end stem 230 in the axial direction, and an internal threaded area 1401 for screwing to the external threaded area 2302 is provided at one end of the connecting nut 140 in the axial direction.

[0033] In this embodiment, the internal thread starting position of the internal thread area 1401 is specified along the circumferential direction at the same position inside the connecting nut 140, that is, the internal thread starting position of the internal thread area 1401 is fixed. Similarly, in this embodiment, the external thread starting position of the external thread area 2302 is specified along the circumferential direction at the same position outside the male end core column 230, that is, the external thread starting position of the external thread area 2302 is fixed.

[0034] In this embodiment, a first marking portion 1402 is provided at the radially outer side of the connection nut 140 corresponding to the starting position of the internal thread, a second flange 2303 is provided at the area of ​​the male end stem 230 close to the external thread area 2302, and a second marking portion 2304 is provided on the second flange 2303. When the internal thread area 1401 and the external thread area 2302 are threadedly connected, the tightening torque of the threaded connection structure reaches the specified torque after the first marking portion 1402 and the second marking portion 2304 are aligned. Of course, when the tightening torque is close to the specified torque, a torque wrench can be used for secondary tightening until the first marking portion 1402 and the second marking portion 2304 are aligned. Specifically, the specified torque is 0.4Nm.

[0035] See also Figures 3 to 6 , the first marking portion 1402 is a rectangular block mark, and is provided with a starting end 1402a and an ending end 1402b, wherein the starting end 1402a corresponds to the starting position of the internal thread of the connecting nut 140, and the ending end 1402b is set away from the starting end 1402a in the tightening direction. The second marking portion 2304 is a conical triangle mark. When the triangle mark is aligned with the starting end 1402a pointing to the block mark, the tightening torque of the threaded connection structure reaches the specified torque. In order to facilitate the operator's operation confirmation and prevent the threaded connection structure from being damaged due to excessive screwing, the tightening torque of the threaded connection structure in this embodiment is provided with a certain floating space, that is, when the triangle mark is aligned with any position between the starting end 1402a and the ending end 1402b pointing to the block mark, the tightening torque of the threaded connection structure can fluctuate within the specified torque range to meet product requirements.

[0036] See also Figures 3 to 6The female end stem 130 includes a female end stem body 1301 and a first flange 1302 arranged on the female end stem body 1301. The connecting nut 140 is movably sleeved on the female end stem body 1301 along the length direction of the female end stem body 1301 and is stopped at the first flange 1302, wherein a first wave surface 1303 is arranged on the side of the first flange 1302 stopping the connecting nut 140, and a second wave surface 1403 matching the first wave surface 1303 is arranged on the inner wall of one end of the connecting nut 140 away from the internal thread area 1401. The sealing element 150 is arranged on the side of the first flange 1302 away from the first wave surface 1303 and is sandwiched between the female end stem 130, the male end stem 230 and the connecting nut 140 to radially seal the connecting area between the female end stem 130 and the male end stem 230 on the inner side of the connecting nut 140.

[0037] Therefore, this embodiment comprehensively considers the sealing surface design of the first wave surface 1303 and the second wave surface 1403, the compression amount of the sealing element 150 in the sealed state, and the tightening torque when the first mark portion 1402 is aligned with the second mark portion 2304. Through these structural designs and complex and careful calculations, the thread starting position and appearance characteristics of each connecting nut 140 monomer remain completely consistent, so that after different batches of female connectors and male connectors are randomly assembled, when the first mark portion 1402 of the threaded connection structure is aligned with the second mark portion 2304, its tightening torque can still reach the specified torque. In addition, the operator does not need to go deep into the cabinet to manually pull, use tools, or screw the threaded connection structure to assist in inspection, which makes it easy to realize visual inspection during equipment operation, and is suitable for narrow space application scenarios, which is conducive to the realization of inspection visualization.

[0038] In the prior art, a threaded sleeve with an external thread is movably connected to the outer side of the male end core column. The threaded sleeve is a movable part and is easy to rotate during the assembly process, which is not conducive to the operator to accurately judge the tightness of the threaded connection structure. Misjudgment often occurs due to the rotation of the threaded sleeve. Therefore, tools are required to assist in fixing the threaded sleeve before the assembly can be completed. In this embodiment, the male end core column 230 is a tubular part, and its outer surface is integrally injection molded with an external thread area 2302. During assembly, it is only necessary to rotate the connecting nut 140 to achieve the tightening of the threaded connection structure, thereby improving the assembly efficiency and preventing the phenomenon of misjudgment of the tightness. In addition, the number of parts of the male end connector 200 is reduced, which is conducive to reducing production costs. It can be understood that in order to facilitate the operator to screw, the outer sides of the connecting nut 140 and the male end core column 230 are provided with anti-slip grooves.

[0039] This embodiment also provides a connecting cable assembly, including the above-mentioned circular connector.

[0040] See also Figure 2In this embodiment, the female connector 100 further includes a female pin 120 inserted into the female core column 130, the other end of the female pin 120 is crimped with the female wire 110, a female wire seal 170 is provided between the female wire 110 and the female core column 130, and the outer surface of the seal is molded with a female rubber layer 160. Similarly, the male connector 200 further includes a male pin 220 inserted into the male core column 230, the other end of the male pin 220 is crimped with the male wire 210, a male wire seal 250 is provided between the male wire 210 and the male core column 230, and the outer surface of the seal is molded with a male rubber layer 240.

[0041] After the internal thread area 1401 of the connecting nut 140 of this embodiment is screwed to the external thread area 2302 of the male end stem 230, the second wave surface 1403 on the inner side of the rear of the connecting nut 140 contacts the first wave surface 1303 of the first flange 1302 on the female end stem body 1301, and squeezes the sealing element 150. By designing and calculating the difference between the first wave surface 1303 and the second wave surface 1403, the total number of turns of the internal thread area 1401 and the external thread area 2302, and the compression of the sealing element 150, after the product is assembled, the second marking part 2304 can be aligned with the first marking part 1402, meeting the product's demand for tightening torque and facilitating the realization of visual inspection. Moreover, after the mixed assembly of the female connector 100 and the male connector 200, any matching assembly can still be met, which is convenient and fast, with reliable sealing, waterproof and durable, and a protection level of IP67, which is suitable for various outdoor environment applications.

[0042] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A circular connector, comprising a female connector (100) and a male connector (200) that can be plugged into each other, characterized in that: A threaded connection structure is provided, the threaded connection structure comprising a female end stem assembly provided on a female end connector (100) and a male end stem (230) provided on a male end connector (200), the female end stem assembly comprising a female end stem (130), a sealing element (150) and a connecting nut (140) sleeved on the female end stem (130) and the sealing element (150); An external threaded area (2302) is provided radially outside one end of the male end core column (230) in the axial direction, and an internal threaded area (1401) is provided at one end of the connecting nut (140) in the axial direction for being screwed onto the external threaded area (2302), wherein the starting position of the internal thread of the internal threaded area (1401) is determined at the same position along the circumferential direction, and the starting position of the external thread of the external threaded area (2302) is also determined at the same position along the circumferential direction; A first marking portion (1402) is provided on the radial outer side of the connecting nut (140) at the starting position of the internal thread of the internal thread area (1401); a second flange (2303) is provided on the male end core column (230) near the external thread area (2302), and a second marking portion (2304) is provided on the second flange (2303); When the first marking portion (1402) is aligned with the second marking portion (2304), the tightening torque of the threaded connection structure reaches a specified torque.

2. The circular connector according to claim 1, characterized in that: The first marking portion (1402) is provided with a starting end (1402a) and an ending end (1402b), the starting end (1402a) corresponds to the starting position of the internal thread of the internal thread area (1401), and when the second marking portion (2304) is aligned with any position between the starting end (1402a) and the ending end (1402b), the tightening torque of the connecting structure reaches a specified torque.

3. The circular connector according to claim 2, characterized in that: The first marking portion (1402) is a conical triangle mark, and the second marking portion (2304) is a rectangular square mark.

4. The circular connector according to claim 1, characterized in that: The female end stem (130) includes a female end stem body (1301) and a first flange (1302) arranged on the female end stem body (1301); the connecting nut (140) is movably mounted on the female end stem body (1301) along the length direction of the female end stem body (1301) and is stopped at the first flange (1302); a first wavy surface (1303) is arranged on one side of the first flange (1302) that stops the connecting nut (140); and a second wavy surface (1403) matching the first wavy surface (1303) is arranged on the connecting nut (140).

5. The circular connector according to claim 4, characterized in that: The sealing element (150) is arranged on the side of the first flange (1302) away from the first wavy surface (1303) and is clamped between the female end core column (130), the male end core column (230) and the connecting nut (140).

6. The circular connector according to claim 5, characterized in that: The sealing element (150) radially seals the connection area between the female end stem (130) and the male end stem (230) on the inner side of the connecting nut (140).

7. The circular connector according to claim 1, characterized in that: The female connector (100) further includes a female pin (120) inserted into the female core column (130), and the male connector (200) further includes a male pin (220) inserted into the male core column (230). The female core column (130) is partially inserted into the male core column (230), and the female pin (120) is electrically connected to the male pin (220).

8. A connecting cable assembly, characterized in that: A circular connector comprising any one of claims 1 to 7.

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