Mistake-proof fastening type sealing connector

Abstract

The invention relates to the field of line connectors, in particular to a mistake-proof fastening type sealing connector which comprises a male plug and a female plug which are in plug-in fit, the male plug is fixedly provided with a shell which sleeves the female plug, and convex patterns are formed on the inner wall of the shell; the female plug is provided with a groove of which the inner wall can be elastically deformed, the convex pattern is clamped and matched in the groove, the elastic force for driving the elastic deformation of the inner wall of the groove is F, the pre-tightening force of the male plug and the female plug is L, and F is greater than L; and a sealing structure for sealing and mistake proofing is arranged in the shell. The connection stability during use is optimized through an elastic buffering mode.

Description

Technical Field

[0001] The present application relates to the field of line connectors, and in particular to an anti-error fastening type sealing connector. Background Art

[0002] Line connectors are mainly used for signal transmission and power transmission. In the field of new energy vehicles, due to the increase in battery capacity and the widespread application of electronic equipment, the use of line connectors has increased significantly.

[0003] The line connector mainly includes a male plug and a female plug that are plugged into each other. In order to lock the male plug and the female plug, the locking methods mainly include the lock type and the thread type. The lock type mainly uses the buckle set on the male plug and the female plug shell to lock by buckle matching. There are two types of thread types, one is that the male plug and the female plug are matched by screwing; the other is that the male plug and the female plug are locked by bolts.

[0004] When the aforementioned connectors are used in the automotive field, they are basically in a driving state during use, and are subject to continuous and non-stationary vibration conditions. The locking method mainly uses an elastic buckle method, relying on the elastic force of the buckle itself to buckle, which is prone to breakage or loosening under long-term vibration conditions. As for the threaded fixing method, due to the use of threaded fixing, it is used in different directions, different frequencies and different amplitudes for a long time. At this time, it is necessary to perform additional anti-loosening treatment on the bolts or screws, such as locking with a latch. However, the latch will increase the workload of installation on the one hand, and on the other hand, the screws of the connector are relatively small, which will make the latch relatively slender, and it is easy to be damaged during use, resulting in loosening failure. Therefore, how to optimize the stability of the connection when the connector is used is an urgent problem that needs to be solved. Summary of the invention

[0005] In order to optimize the stability of the connection during use, the present application provides a mistake-proof fastening type sealing connector.

[0006] The present application provides a kind of error-proof fastening sealed connector, which adopts the following technical solution: A mistake-proofing and fastening sealing connector comprises a male plug and a female plug that fit together, wherein the male plug is fixed with a shell that is sleeved on the female plug and the inner wall of the shell is formed with convex patterns; the female plug is provided with a groove whose inner wall can be elastically deformed, the convex patterns are snap-fitted into the groove, the elastic force that drives the inner wall of the groove to elastically deform is F, the pre-tightening force of the male plug and the female plug is L, and F>L; a sealing structure for sealing and mistake-proofing is provided in the shell.

[0007] By adopting the above technical solution, during the plug-in mating process, the male plug and the female plug need to be plugged in according to a pre-tightening force exceeding F. During this process, the tube wall of the mating tube will elastically deform, and after the plug-in mating is completed, the convex pattern will be stuck in the groove. Since the inner wall of the groove is elastic, the impact force generated by the male plug and the female plug under vibration conditions can be effectively absorbed through elastic deformation, so as to reduce the possibility of connection detachment due to the cancellation of connection restrictions due to plastic deformation, thereby achieving the purpose of optimizing the stability during connection.

[0008] Optionally, the convex pattern is a folded line or a spiral line structure surrounding the inner wall of the shell.

[0009] By adopting the above technical solution, the resistance to elastic deformation of the inner wall of the convex wave groove can be made relatively larger, thereby further optimizing the stability of the connection.

[0010] Optionally, a flow path is formed inside the groove wall between adjacent grooves, and an extrusion piece for controlling the flow of fluid into or out of the flow path by extrusion or release is provided in the shell.

[0011] By adopting the above technical solution, since the convex pattern needs to be snap-fitted into the groove and the groove wall of the groove is elastic, it often leads to a clearance fit between the shell and the inner wall of the convex pattern and the inner wall of the groove, resulting in a certain amount of movement of the shell relative to the female plug. At this time, after the plug-in fit, the fluid flows into the flow path through the extrusion piece, causing the inner wall of the groove to expand to fully fill and fit the inner wall of the shell, thereby reducing the movement margin and increasing the external force required for the deformation of the inner wall of the groove, effectively further optimizing the stability of the connection.

[0012] Optionally, the female plug is covered with a mating tube made of elastic material, the groove and the flow path are formed on the outer wall of the mating tube, and a storage chamber connected to the flow path is formed inside the mating tube, and the extrusion piece controls the flow of fluid into or out of the flow path by squeezing or releasing the storage chamber.

[0013] By adopting the above technical solution, after the plug-in mating is completed, it is only necessary to pressurize the storage chamber through the extruder so that the fluid in the storage chamber flows into the flow path to expand the mating tube and fill the inside of the shell, thereby optimizing the stability of the connection.

[0014] Optionally, the extrusion member includes an extrusion paddle and an extrusion bolt, wherein the extrusion paddle is arranged corresponding to the storage chamber and one end of the extrusion paddle is fixedly connected to the inner wall of the shell, the extrusion bolt passes through and is threadedly connected to the inner wall of the shell, and one end of the extrusion bolt abuts against the extrusion paddle and is used to push the extrusion paddle to extrude the storage chamber.

[0015] By adopting the above technical solution, when the storage chamber needs to be squeezed, it is only necessary to rotate the squeezing bolt so that the squeezing paddle presses the storage chamber.

[0016] Optionally, the shell is concavely formed with a receiving cavity for receiving the extrusion paddle at a position corresponding to the extrusion paddle.

[0017] By adopting the above technical solution, the movable margin of the extrusion paddle can be increased, and the fluid stored in the storage chamber can be relatively increased, so that the matching tube can fully fill the interior of the shell.

[0018] Optionally, the distance between the plane of the extrusion paddle and the storage chamber gradually increases from the male plug to the female plug.

[0019] By adopting the above technical solution, the extrusion paddle can be engaged with the outer wall of the matching tube after squeezing the storage chamber, thereby further increasing the restriction on the matching tube.

[0020] Optionally, at least two extrusion members are symmetrically arranged around the center of the shell.

[0021] By adopting the above technical solution, the force on the female plug can be relatively balanced, reducing the possibility of the female plug leaning toward one side of the male plug.

[0022] Optionally, the sealing structure includes a sealing ring groove opened on the outer wall of the mating tube facing the male plug and a sealing ring clamped in the sealing ring groove, the mating tube is provided with a plurality of numbers, and the shell is provided with an observation hole at a position corresponding to one of the numbers.

[0023] By adopting the above technical solution, sealing can be achieved by clamping the sealing ring in the sealing ring groove. At the same time, since a number is provided on the outer wall of the mating tube, and the shell is provided with observation holes corresponding to the corresponding numbers, at this time, the observation hole on the male plug will correspond to the number position of the corresponding female plug. If there is a mating deviation, the number that can be observed through the observation hole will obviously deviate, thereby achieving an error-proofing effect. At the same time, there is no need to set up additional structures that will interfere with the plug-in mating for error-proofing.

[0024] Optionally, the fluid stored in the storage chamber is an expansion curing agent and the storage chamber limits the flow of the fluid into the flow path through a pressure valve.

[0025] By adopting the above technical solution, the expansion curing agent will expand and solidify after entering the flow path. On the one hand, it will allow the matching tube to fully fill the interior of the shell, optimizing the tightness of the fit; on the other hand, after solidification, it will significantly increase the resistance of the male plug to detach from the female plug, further optimizing the stability of the connection.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: During the plug-in process, the male plug and the female plug need to be plugged in according to a pre-tightening force exceeding F. During this process, the tube wall of the mating tube will deform elastically, and after the plug-in is completed, the convex pattern will be stuck in the groove. Thereafter, the storage chamber is squeezed by rotating the extrusion bolt, so that the fluid in the storage chamber flows into the flow path and fully fills the flow path, so that the tube wall of the mating tube expands to fully fill and fit with the inner wall of the shell. Since the tube wall of the mating tube is elastic, it can effectively absorb the impact force generated by the male plug and the female plug under vibration conditions. At the same time, since the fluid is an expansion curing agent, the pressure of the contraction of the mating tube will be much greater than F, so that the shell and the mating tube are elastically matched, and the pulling force required for mutual separation is further increased, thereby significantly optimizing the stability after plug-in by absorbing vibration and increasing the external force required for separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the cross-sectional structure of an embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the structure of the female plug in the embodiment of the present application.

[0030] Figure 4 It is a schematic diagram of the structure of the pressure valve in the embodiment of the present application.

[0031] Explanation of the reference numerals: 1. male plug; 11. housing; 111. embossment; 12. extrusion piece; 121. extrusion paddle; 122. extrusion bolt; 13. observation hole; 2. female plug; 21. groove; 211. flow path; 22. mating tube; 221. storage chamber; 23. pressure valve; 231. pressure film; 232. pressure ring; 3. sealing structure; 31. sealing ring groove; 32. sealing ring. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The present application embodiment discloses a mis-proof fastening type sealed connector. Figure 1 The error-proof fastening sealed connector includes a male plug 1 and a female plug 2 that are plugged into and matched with each other for transmitting power or signals.

[0034] Reference Figure 1 and Figure 2The plugging end of the male plug 1 is fixedly connected to a shell 11 which is sleeved on the female plug 2. The inner wall of the shell 11 is formed with a plurality of convex grooves 111. The plurality of convex grooves 111 are distributed along the direction of the male plug 1 and the female plug 2, and the convex grooves are in a zigzag structure or a spiral structure extending around the inner wall of the shell 11. In this embodiment, the zigzag structure is taken as an example for description.

[0035] Reference Figure 2 and Figure 3 At the same time, the outer wall of the plug-in end of the female plug 2 is covered and fixed with a matching tube 22 made of elastic material. The outer wall of the matching tube 22 is formed with grooves 21 corresponding to the convex patterns 111. The convex patterns 111 are clamped in the grooves 21. The elastic force that drives the outer wall deformation of the matching tube 22 corresponding to the adjacent convex patterns 111 is F. The designed preload force of the male plug 1 and the female plug 2 is L, and F>L, so that during the plug-in process, a pressure exceeding F is required to complete the plug-in fit, and after the plug-in is completed, since the inner wall of the groove 21 can be elastically deformed, it can effectively absorb the impact between the male plug 1 and the female plug 2 under long-term vibration conditions, and significantly reduce the possibility of plastic deformation, thereby maintaining a tightly connected state and optimizing the stability of the connection during use.

[0036] Since the male plug 1 and the female plug 2 need to fit tightly together, in order to reduce the damage to the outer wall of the mating tube 22 caused by the plugging process while further ensuring the stable mating of the male plug 1 and the female plug 2, the mating tube 22 is provided with an annularly extending flow path 211 inside the tube wall between adjacent grooves 21 for fluid to flow into and expand the portion between adjacent grooves 21, so that the mating tube 22 can apply a certain pre-tightening force and fit the inner wall of the shell 11 after the convex pattern 111 is clamped in the groove 21, thereby optimizing the stability of the connection.

[0037] Reference Figure 2 and Figure 3 , one end of the mating tube 22 facing the male plug 1 expands toward the outer ring to form a protrusion, and a storage chamber 221 extending in an annular direction is formed in the protrusion for storing fluid, such as air, hydraulic oil or expansion curing agent. The flow path 211 is connected to the storage chamber 221 through a channel extending along the axial direction of the mating tube 22, so that the fluid in the storage chamber 221 can flow into the flow path 211. If the fluid is air or hydraulic oil, the storage chamber 221 can be directly squeezed to make the fluid flow directly into the flow path 211 and the part between the adjacent grooves 21 expand to fully fit the inner wall of the housing 11, and when the male plug 1 and the female plug 2 have a tendency to move relative to each other due to vibration, the outer wall of the mating tube 22 will be squeezed, so that the force is transmitted to other parts by the fluid for absorption, and the elastic expansion and contraction buffer of the mating tube 22 is used to fully limit the separation of the male plug 1 and the female plug 2.

[0038] Reference Figure 2 and Figure 4 In this embodiment, the fluid is an expansion curing agent as an example for explanation, and a pressure valve 23 is provided at the connection between the storage chamber 221 and the channel in the matching tube 22. The pressure valve 23 includes a pressure film 231 fixed and blocked at the output port of the storage chamber 221 and a pressure ring 232 fixedly connected to the outer ring of the pressure film 231. The pressure ring 232 has a plurality of serrations extending inwardly so that it will elastically deform toward the inner side of the matching tube 22 when subjected to pressure. Due to the relatively large difference in the deformation amount between the pressure ring 232 and the pressure film 231, the pressure film 231 will be torn by the serrations of the inner ring of the pressure ring 232, so that the expansion curing agent can flow into the flow path 211 and expand and cure by contacting the air, and the matching tube 22 can maintain a state of fully fitting to the inner wall of the shell 11 and being stuck with the convex pattern 111, thereby further optimizing the stability during use.

[0039] Reference Figure 2 and Figure 3 In order to squeeze the storage chamber 221 to control the fluid flowing into or being drawn out of the flow path 211, the housing 11 has a storage chamber formed in a concave shape toward the outside at a portion corresponding to the storage chamber 221, and an extrusion member 12 is disposed in the storage chamber to squeeze the storage chamber 221. The storage chamber is opened toward the inside of the housing 11.

[0040] Specifically, the extrusion member 12 includes an extrusion paddle 121 and an extrusion bolt 122. One end of the extrusion paddle 121 is fixedly connected to the opening edge of one end of the storage chamber on the housing 11 in the circumferential direction. The extrusion paddle 121 is an elastic paddle and maintains a tendency to be stored in the storage chamber. The other end of the extrusion paddle 121 extends to the opening edge of the other end of the storage chamber in the circumferential direction. The extrusion bolt 122 is penetrated and threadedly connected to the inner wall of the housing 11. One end of the extrusion bolt 122 located in the housing 11 extends into the storage chamber and abuts against the extrusion paddle 121, so as to push the extrusion paddle 121 to squeeze the storage chamber 221, so that the fluid flows out of the storage chamber 221.

[0041] In addition, the extrusion paddle 121 is arranged at an angle to the distribution direction of the male plug 1 and the female plug 2, and the distance between the plane of the extrusion paddle 121 and the storage chamber 221 gradually increases from the male plug 1 to the female plug 2, so that after the extrusion paddle 121 squeezes the storage chamber 221, the outer wall of the mating tube 22 corresponding to a part of the storage chamber 221 will be attached to the inner side of the extrusion paddle 121. Since the extrusion paddle 121 contacts the outer wall of the mating tube 22 at a certain inclination angle, the extrusion paddle 121 will simultaneously limit the separation of the mating tube 22 from the male plug 1, thereby further optimizing the stability of the connection.

[0042] At the same time, in order to achieve a sealing effect, the sealing structure 3 includes a sealing ring groove 31 opened on the outer wall of the mating tube 22 facing the male plug 1 and a sealing ring 32 clamped in the sealing ring groove 31. The sealing ring 32 is fixedly connected to the inner wall of the shell 11 to achieve the purpose of sealing.

[0043] In addition, the outer wall of the mating tube 22 is provided with a number, and the housing 11 is provided with an observation hole 13 at a position corresponding to one of the numbers, and the observation hole 13 is sealed with a transparent material, such as transparent sealant, so that during the mating process of the male plug 1 and the female plug 2, if the number observed by the observation hole 13 is not the corresponding number, it means that the male plug 1 and the female plug 2 are incorrectly matched and need to be replaced. In order to facilitate error prevention, the outer wall of the housing 11 is engraved with the number that needs to be displayed by the observation hole 13, so as to facilitate error prevention.

[0044] The implementation principle of the embodiment of the present application is as follows: during the plug-in process, the male plug 1 and the female plug 2 need to be plugged in according to a preload force exceeding F. During this process, the tube wall of the matching tube 22 will be elastically deformed, and after the plug-in is completed, the convex pattern 111 is stuck in the groove 21. Thereafter, the storage chamber 221 is squeezed by rotating the extrusion bolt 122, so that the fluid in the storage chamber 221 flows into the flow path 211 and fully fills the flow path 211, so that the tube wall of the matching tube 22 expands to fully fill and fit the inner wall of the shell 11. Since the tube wall of the matching tube 22 is elastic, it can effectively absorb the impact force generated by the male plug 1 and the female plug 2 under vibration conditions; at the same time, since the fluid is an expansion curing agent, the pressure of the matching tube 22 contraction is much greater than F, so that the shell 11 and the matching tube 22 are elastically matched, and the pulling force required for mutual separation is further increased, thereby significantly optimizing the stability after plug-in by absorbing vibration and increasing the external force required for separation.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mistake-proof fastening sealed connector, characterized in that: It comprises a male plug (1) and a female plug (2) that are pluggable and compatible, wherein the male plug (1) is fixed with a shell (11) that is fitted over the female plug (2), and the inner wall of the shell (11) is formed with convex patterns (111); The female plug (2) is provided with a groove (21) whose inner wall is elastically deformable, the convex pattern (111) is snap-fitted into the groove (21), the elastic force driving the inner wall of the groove (21) to elastically deform is F, the pre-tightening force of the male plug (1) and the female plug (2) is L, and F>L; A sealing structure (3) for sealing and preventing errors is arranged in the housing (11); A flow path (211) is formed inside the groove wall between adjacent grooves (21), and an extrusion piece (12) is provided in the housing (11) for controlling the flow of fluid into or out of the flow path (211) by extrusion or release; The female plug (2) is coated with a matching tube (22) made of elastic material, the groove (21) and the flow path (211) are formed on the outer wall of the matching tube (22), and a storage chamber (221) connected to the flow path (211) is formed inside the matching tube (22), and the extrusion member (12) controls the flow of fluid into or out of the flow path (211) by extruding or releasing the storage chamber (221); The fluid stored in the storage chamber (221) is an expansion curing agent, and the storage chamber (221) limits the flow of the fluid into the flow path (211) through a pressure valve (23).

2. The error-proofing and fastening sealing connector according to claim 1, characterized in that: The convex pattern (111) is in the form of a folded line or a spiral line structure surrounding the inner wall of the shell (11).

3. The error-proofing and fastening sealing connector according to claim 1, characterized in that: The extrusion member (12) comprises an extrusion paddle (121) and an extrusion bolt (122); the extrusion paddle (121) is arranged corresponding to the storage chamber (221) and one end of the extrusion paddle (121) is fixedly connected to the inner wall of the housing (11); the extrusion bolt (122) penetrates and is threadedly connected to the inner wall of the housing (11); one end of the extrusion bolt (122) abuts against the extrusion paddle (121) and is used to push the extrusion paddle (121) to extrude the storage chamber (221).

4. The error-proofing and fastening sealing connector according to claim 3, characterized in that: The housing (11) is formed with a concave shape at a position corresponding to the extrusion paddle (121) to form a receiving cavity for receiving the extrusion paddle (121).

5. The error-proofing and fastening sealing connector according to claim 3, characterized in that: The distance between the plane of the extrusion paddle (121) and the storage chamber (221) gradually increases from the male plug (1) to the female plug (2).

6. The error-proofing and fastening sealing connector according to claim 3, characterized in that: At least two extrusion pieces (12) are symmetrically arranged around the center of the shell (11).

7. The error-proof fastening sealed connector according to any one of claims 3 to 6, characterized in that: The sealing structure (3) comprises a sealing ring groove (31) formed on the outer wall of the mating tube (22) on the side facing the male plug (1) and a sealing ring (32) clamped in the sealing ring groove (31); the mating tube (22) is provided with a plurality of numbers, and the housing (11) is provided with an observation hole (13) at a position corresponding to one of the numbers.

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