A kind of error-proof fastening sealing connector

Abstract

The present application relates to the field of line connectors, and more particularly to a secure, error-proof, sealed connector comprising a male plug and a female plug that fit together. The male plug is secured to a housing that fits over the female plug and has a ridged inner wall. The female plug has an elastically deformable groove on its inner wall, the ridge snapping into place within the groove. The elastic force that causes the elastic deformation of the groove's inner wall is F, and the preload force between the male and female plugs is L, where F>L. The housing includes a sealing structure for sealing and error-proofing. The present application utilizes an elastic buffering mechanism to optimize the stability of the connection during use.

Description

Technical Field

[0001] This application relates to the field of line connectors, and particularly to an anti-misconnection fastening type sealed connector. Background Art

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

[0003] Line connectors mainly include male plugs and female plugs that are inserted and mated with each other. In order to lock the male plug and the female plug, the locking methods mainly include a snap type and a threaded type. The snap type mainly locks through the snap fasteners provided on the outer shells of the male plug and the female plug by means of snap-fitting. The threaded type is divided into two types. One is that the male plug and the female plug are mated 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, since they are basically in a driving state during use and under continuous and unfixed vibration conditions. The snap type mainly relies on the elastic snap of the snap fastener itself by elastic snap-fitting, and there is a possibility of breakage or loosening under long-term vibration conditions. For the threaded fixing method, due to the use of threaded fixing, when used under long-term conditions with different directions, different frequencies, and different amplitudes, additional anti-loosening treatment needs to be carried out on the bolts or screws at this time, such as locking with pins. However, on the one hand, the pins will increase the installation workload, and on the other hand, the screws of the connector are relatively small, which will make the pins relatively slender and easy to be damaged during use and cause loosening failure. Therefore, how to optimize the connection stability during the use of the connector is an urgent problem to be solved at present. Summary of the Invention

[0005] In order to optimize the connection stability during use, this application provides an anti-misconnection fastening type sealed connector.

[0006] An anti-misconnection fastening type sealed connector provided by this application adopts the following technical solutions:

[0007] An anti-misconnection fastening type sealed connector includes a male plug and a female plug that are inserted and mated with each other. The male plug is fixed with a housing that sleeves the female plug, and the inner wall of the housing is formed with convex stripes; the female plug is provided with a groove whose inner wall can elastically deform. The convex stripes are snap-fitted in the groove, and the elastic force that drives the inner wall of the groove to elastically deform is F, and the pre-tightening force of the male plug and the female plug is L, and F < L; a sealing structure for sealing and anti-misconnection is arranged in the housing.

[0008] 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, it can effectively absorb the impact force generated by the male plug and the female plug under vibration conditions through elastic deformation, thereby reducing the possibility of connection disconnection due to the cancellation of the connection restriction due to plastic deformation, thereby achieving the purpose of optimizing the stability of the connection.

[0009] Optionally, the convex pattern is a broken line or a spiral line structure surrounding the inner wall of the shell.

[0010] 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.

[0011] Optionally, a flow path is formed inside the groove wall between adjacent grooves, and an extrusion piece is provided in the shell to control the flow of fluid into or out of the flow path by extrusion or release.

[0012] By adopting the above technical solution, since the convex groove needs to be snap-fitted into the groove and the groove wall is elastic, there will often be a clearance fit between the shell and the inner wall of the convex groove and the inner wall of the groove, resulting in a certain amount of movable margin between the shell and the female plug. At this time, after plugging and fitting, 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 movable 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.

[0013] 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 into or out of the flow path by squeezing or releasing the storage chamber.

[0014] 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, thereby causing the mating tube to expand and fill the interior of the shell, thereby optimizing the stability of the connection.

[0015] Optionally, the extrusion member includes an extrusion paddle and an extrusion bolt, the extrusion paddle is arranged corresponding to the storage chamber and one end 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.

[0016] 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.

[0017] Optionally, the shell is concavely formed with a receiving cavity for receiving the extrusion paddle at a position corresponding to the extrusion paddle.

[0018] By adopting the above technical solution, the movable margin of the extrusion paddle can be increased, and the amount of fluid stored in the storage chamber can be relatively increased, so that the matching tube can fully fill the interior of the shell.

[0019] Optionally, the distance between the plane of the extrusion paddle and the storage chamber gradually increases from the male plug to the female plug.

[0020] By adopting the above technical solution, the extrusion paddle can be engaged with the outer wall of the mating tube after squeezing the storage chamber, thereby further increasing the restriction on the mating tube.

[0021] Optionally, at least two extrusion members are symmetrically arranged around the center of the shell.

[0022] By adopting the above technical solution, the force on the female plug can be relatively balanced, reducing the possibility of the female plug leaning to one side of the male plug.

[0023] Optionally, the sealing structure includes a sealing ring groove provided 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 several numbers, and the shell is provided with an observation hole at a position corresponding to one of the numbers.

[0024] 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 of numbers are 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 holes on the male plug will correspond to the number positions 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 the effect of error prevention. At the same time, there is no need to set up additional structures that will interfere with the plug-in mating for error prevention.

[0025] 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.

[0026] 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 the separation of the female plug, further optimizing the stability of the connection.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 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 wall of the mating tube will elastically deform, 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, causing the wall of the mating tube to expand to fully fill and fit with the inner wall of the shell. Since the 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 mating tube contraction 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

[0029] Figure 1 It is a structural diagram of an embodiment of the present application.

[0030] Figure 2 It is a schematic cross-sectional structural diagram of an embodiment of the present application.

[0031] Figure 3 yes Figure 3 It is a structural diagram of the female plug in the embodiment of the present application.

[0032] Figure 4 It is a structural diagram of the pressure valve in the embodiment of the present application.

[0033] Explanation of the accompanying reference numerals: 1. Male plug; 11. Shell; 111. Raised pattern; 112. Storage chamber; 12. Extruded part; 121. Extruded paddle; 122. Extruded bolt; 13. Observation hole; 2. Female plug; 21. Groove; 211. Flow path; 22. Matching 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

[0034] The following is combined with Figure 1-4 This application is described in further detail.

[0035] The embodiment of the present application discloses a mis-proof fastening type sealing connector. Figure 1 The error-proof fastening sealed connector includes a male plug 1 and a female plug 2 that are plugged into each other for transmitting power or signals.

[0036] Reference Figure 1 and Figure 2, the insertion end of the male plug 1 is fixedly connected with a housing 11 that sleeves the female plug 2. A plurality of convex ridges 111 are formed on the inner wall of the housing 11. The plurality of convex ridges 111 are distributed along the direction of the male plug 1 and the female plug 2, and the convex ridges are in a zigzag structure or a spiral structure that extends around the inner wall of the housing 11. In this embodiment, the zigzag structure is taken as an example for illustration.

[0037] Refer to Figure 2 And her. At the same time, an outer wall of the insertion end of the female plug 2 is covered and fixed with a fitting tube 22 made of an elastic material. A groove 21 is formed on the outer wall of the fitting tube 22 corresponding to the convex ridge 111. The convex ridge 111 is clamped in the groove 21. The elastic force F that drives the outer wall of the fitting tube 22 between adjacent convex ridges 111 to deform, and the preload L designed for the male plug 1 and the female plug 2, and F < L, so that during the insertion process, a pressure exceeding F is required to complete the insertion fit. And after the insertion is completed, due to the inner wall of the groove 21 being elastically deformable, 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, so as to maintain a tightly connected state and optimize the stability of the connection during use.

[0038] Since it is necessary to make the male plug 1 and the female plug 2 fit tightly, in order to reduce the damage to the outer wall of the fitting tube 22 during the insertion process and further make the male plug 1 and the female plug 2 fit stably, a circumferentially extending flow path 211 is provided inside the pipe wall between adjacent grooves 21 of the fitting tube 22 for allowing fluid to flow in to expand the part between adjacent grooves 21, so that the fitting tube 22 can apply a certain preload and fit the inner wall of the housing 11 after the convex ridge 111 is clamped in the groove 21, optimizing the stability of the connection.

[0039] Refer to Figure 2 And Figure 3 , one end of the fitting tube 22 facing the male plug 1 bulges outwards to form a protruding part, and a circumferentially extending storage chamber 221 is formed inside the protruding part 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 fitting 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, so that the fluid directly flows into the flow path 211 and makes the part between adjacent grooves 21 expand, so as to fully fit the inner wall of the housing 11. And when the male plug 1 and the female plug 2 tend to move relatively due to vibration, it will also squeeze the outer wall of the fitting tube 22, so that the force is transmitted to other parts by the fluid and absorbed, and buffered by the elastic expansion and contraction of the fitting tube 22, achieving the purpose of fully restricting the separation of the male plug 1 and the female plug 2.

[0040] Refer to [[ID=I9]] Figure 2 And Figure 4 In this embodiment, the fluid is taken as an expansion curing agent as an example, 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 sealed 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 inside of the matching tube 22 when under pressure. Due to the relatively large difference in the deformation amount of 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 remain in full contact with the inner wall of the shell 11 and the clamped convex groove 111, further optimizing the stability during use.

[0041] Reference Figure 2 and Figure 3 In order to squeeze the storage chamber 221 and control the flow of fluid into or out of the flow path 211, the housing 11 has a concave receiving chamber 112 formed outwardly at a portion corresponding to the storage chamber 221. The receiving chamber 112 is provided with an extruding member 12 for squeezing the storage chamber 221. The receiving chamber 112 is opened toward the inside of the housing 11.

[0042] 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 circumferential opening edge of the storage chamber 112 on the housing 11. The extrusion paddle 121 is elastic and tends to be stored in the storage chamber 112. The other end of the extrusion paddle 121 extends to the circumferential opening edge of the storage chamber 112. The extrusion bolt 122 penetrates and is threadedly connected to the inner wall of the housing 11. The end of the extrusion bolt 122 located inside the housing 11 extends into the storage chamber 112 and abuts against the extrusion paddle 121, thereby pushing the extrusion paddle 121 to squeeze the storage chamber 221, causing the fluid to flow out of the storage chamber 221.

[0043] 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 part of the storage chamber 221 corresponding to the mating tube 22 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 detachment of the mating tube 22 relative to the male plug 1, further optimizing the stability of the connection.

[0044] At the same time, in order to achieve the 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.

[0045] In addition, the outer wall of the mating tube 22 is marked with a number. A viewing hole 13 is provided at a position corresponding to one of the numbers in the housing 11. This viewing hole 13 is sealed with a transparent material, such as transparent sealant. This ensures that if the viewing hole 13 does not display the corresponding number during the mating process between the male and female plugs 1 and 2, it indicates that the male and female plugs 1 and 2 are incorrectly mated and need to be replaced. To further facilitate error prevention, the outer wall of the housing 11 is engraved with the number that the viewing hole 13 should display.

[0046] The working principle of the embodiment of the present application is as follows: during the plug-in mating 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 wall of the mating tube 22 will elastically deform, and after the plug-in mating is completed, the ridge 111 is locked 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, causing the wall of the mating tube 22 to expand and fully fit the inner wall of the housing 11. Moreover, since the wall of the mating 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 mating tube 22 to contract is much greater than F, thereby making the housing 11 and the mating tube 22 elastically fit together while further increasing the pulling force required for mutual separation. This significantly optimizes the stability after plug-in mating by absorbing vibration and increasing the external force required for separation.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A secure seal connector, characterized in that: It includes a male plug (1) and a female plug (2) that are plug - and - socket - fitted. The male plug (1) is fixed with a housing (11) that fits over the female plug (2), and the inner wall of the housing (11) is formed with ridges (111). The female plug (2) is provided with a groove (21) whose inner wall can elastically deform. The ridges (111) are snap - fitted into the groove (21). The elastic force that drives the inner wall of the groove (21) to elastically deform is F, and the pre - tightening force between the male plug (1) and the female plug (2) is L, where F < L. A sealing structure (3) for sealing and anti - misalignment is provided inside the housing (11). A flow path (211) is formed inside the wall between adjacent grooves (21). An extrusion member (12) for controlling the inflow or extraction of fluid into or out of the flow path (211) by extrusion or release is provided inside the housing (11). The female plug (2) is coated with a mating tube (22) made of an elastic material. The groove (21) and the flow path (211) are formed on the outer wall of the mating tube (22), and a storage chamber (221) communicating with the flow path (211) is formed inside the mating tube (22). The extrusion member (12) controls the inflow or extraction 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) restricts the inflow of fluid into the flow path (211) through a pressure valve (23). The extrusion member (12) includes an extrusion flap (121) and an extrusion bolt (122). The extrusion flap (121) is arranged corresponding to the storage chamber (221) and one end is fixedly connected to the inner wall of the housing (11). The extrusion bolt (122) passes through and is threadedly connected to the inner wall of the housing (11), and one end of the extrusion bolt (122) abuts against the extrusion flap (121) and is used to push the extrusion flap (121) to extrude the storage chamber (221).

2. The error-proofing, fastening, sealing connector according to claim 1, characterized in that: The ridges (111) are in a broken - line or spiral - line structure that surrounds the inner wall of the housing (11).

3. The error-proofing, fastening, sealed connector according to claim 1, characterized in that: A receiving cavity for receiving the extrusion flap (121) is recessed on the outer wall of the housing (1) at a position corresponding to the extrusion flap (121).

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

5. The error-proofing, fastening, sealing connector according to claim 1, characterized in that: At least two extrusion members (12) are symmetrically arranged around the center of the housing (11).

6. The error-proofing, fastening, sealing connector according to any one of claims 1, 3-5, characterized in that: 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 mating tube (22) is provided with several numbers, and an observation hole (13) is opened on the housing (11) corresponding to one of the numbers.

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