Electrical joint sealing structure and method

Abstract

The invention provides an electrical connector sealing structure and method, the electrical connector sealing structure comprises a shell, a connecting assembly and a shell, the shell comprises a connecting end, a contact pin is arranged in the shell and extends out of the connecting end, a groove is formed in the outer wall of the shell and surrounds the connecting end, the connecting assembly is of an annular structure, the connecting assembly is arranged in the corresponding groove, and the connecting assembly is connected with the shell. A groove is formed in the outer wall of the shell, a sealing piece is arranged between the connecting assembly and the groove, and the outer shell is connected with the shell through the connecting assembly. The shell has the advantages that the groove is formed in the outer wall of the shell, the connecting assembly of an annular structure is arranged in the groove, and the sealing piece is matched, so that the multiple sealing effect can be achieved. According to the design, the problems of air leakage, water leakage and the like are effectively prevented, due to buffering and sealing of the sealing piece between the connecting assembly and the groove, the sealing performance problem caused by inconsistent expansion coefficients of materials is effectively solved, and the overall sealing performance of the electrical connector is improved.

Description

Technical Field

[0001] The present invention relates to the field of sensor devices, and particularly to an electrical connector sealing structure and method. Background Art

[0002] Sensor products mainly consist of a pressure measurement interface, a housing, a pressure sensing core, and an electrical connector, etc. Currently in the market, the assembly methods of electrical connectors mostly adopt methods such as crimping, welding, and pressing, and the assembly methods of the remaining parts all adopt welding methods. The connection between the sensor and the user end all uses electrical connectors, so different usage conditions have different requirements for electrical connectors. In this way, the IP protection level of the entire product has high requirements not only for the installation method of the electrical connector but also for the electrical connector itself. At low temperatures, in the prior art, due to the inconsistent expansion coefficients of the materials themselves, poor sealing occurs. Summary of the Invention

[0003] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide an electrical connector sealing structure and method, which are used to solve the technical problem that the sealing structure in the prior art has poor sealing due to the inconsistent expansion coefficients of the materials themselves.

[0004] To achieve the above object and other related objects, the present invention provides an electrical connector sealing structure, including:

[0005] A housing, the housing includes a connection end, a pin is provided in the housing, the pin extends from the connection end, and a groove is provided on the outer wall of the housing, and the groove is arranged around the connection end;

[0006] A connection component, the connection component is a ring structure, the connection component is arranged in the corresponding groove, and a sealing member is provided between the connection component and the groove;

[0007] An outer shell, the outer shell is connected to the housing through the connection component.

[0008] The advantages of adopting the above technical solutions are that by providing a groove on the outer wall of the housing and arranging the ring-shaped connection component in the groove, together with the sealing member, a multiple sealing effect can be achieved. This design effectively prevents problems such as air leakage and water leakage. Due to the buffering and sealing of the sealing member between the connection component and the groove, the sealing performance problem caused by the inconsistent expansion coefficients of the materials themselves is effectively solved.

[0009] Optionally, the connection component includes a welding ring and a limiting ring, the limiting ring is arranged on the inner wall of the welding ring, the limiting ring is located in the groove, a sealing gap is provided between the limiting ring and the groove, and the sealing member is arranged in the sealing gap.

[0010] Optionally, the connecting component includes a connecting cylinder, one end of the connecting cylinder is connected to the welding ring, and the outer diameter of the outer circle of the connecting cylinder is smaller than the outer diameter of the outer circle of the welding ring.

[0011] Optionally, a filling channel is provided between the connecting cylinder and the housing, the filling channel is connected to the sealing gap, the sealing member is potting glue, and the sealing member is filled in the filling channel and the sealing gap.

[0012] Optionally, the sealing member is provided on the end face of the pin protruding from the connecting end.

[0013] Optionally, both the connecting cylinder and the welding ring are made of metal, and the connecting cylinder and the welding ring are integrally formed.

[0014] Optionally, the limiting ring is formed by plastic molding, and the limiting ring is injection molded on the welding ring.

[0015] Optionally, the connecting component is welded to the outer shell.

[0016] Optionally, the outer wall of the outer shell is flush with the outer wall of the welding ring.

[0017] A sealing method, including the above electrical connector sealing structure, includes the following stages:

[0018] Preparation stage: A pin is provided in the housing. The housing includes a connecting end, the pin protrudes from the connecting end, and a groove is provided on the outer wall of the housing. The groove is arranged around the connecting end;

[0019] Installation stage: The connecting component with an annular structure is arranged in the groove of the housing. The connecting component is used to connect the outer shell, and the outer circular part of the connecting component is welded to the outer shell;

[0020] Sealing stage: A sealing member is added between the connecting component and the housing groove, a groove or gap for filling the sealing member is left between the housing and the connecting component, the outer shell and the connecting component are welded, and the sealing member is filled into the groove or gap. The sealing member can also be provided on the end face of the pin protruding from the housing;

[0021] Testing stage: After the sealing is completed, the sealing performance of the electrical connector is checked and tested.

[0022] As described above, a sealing structure for an electrical connector according to the present invention has the following beneficial effects: By providing a groove on the outer wall of the housing and disposing a connecting component having an annular structure in the groove, in cooperation with the seal, a multiple sealing effect can be achieved. This design effectively prevents problems such as air leakage and water leakage. Due to the buffering and sealing of the seal between the connecting component and the groove, the sealing performance problem caused by the inconsistent coefficient of thermal expansion of the material itself is effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It shows a schematic structural diagram in an embodiment of the present invention;

[0024] Figure 2 It shows a perspective schematic diagram in an embodiment of the present invention;

[0025] Figure 3 It shows a flowchart of steps in an embodiment of the present invention.

[0026] DESCRIPTION OF REFERENCE NUMERALS

[0027] 1 Housing

[0028] 101 Connection end

[0029] 2 Pin

[0030] 3 Connecting component

[0031] 301 Connecting cylinder

[0032] 302 Welding ring

[0033] 303 Limiting ring

[0034] 4 Potting compound

[0035] 5 Outer shell DETAILED DESCRIPTION OF THE INVENTION

[0036] The following specific examples illustrate the embodiments of the present invention. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0037] Please refer to Figures 1 to 3It should be noted that the illustrations provided in this embodiment only schematically illustrate the basic concept of the present invention. The illustrations only show the components related to the present invention, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and proportion of each component during implementation can be arbitrarily changed, and the component layout type may also be more complex. The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical substance significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the efficacy that the present invention can produce and the purpose that can be achieved, should still fall within the scope covered by the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope within which the present invention can be implemented.

[0038] Please refer to Figures 1 through 3 as shown, the present invention provides an electrical connector sealing structure, including:

[0039] A housing 1, the housing 1 includes a connection end 101, wherein the housing 1 is cylindrical, the connection end 101 is located at one end of the housing 1 and is used for sealing. A pin 2 is provided inside the housing 1, the pin 2 extends from the connection end 101, and a groove is provided on the outer wall of the housing 1, and the groove is arranged around the connection end 101;

[0040] A connection component 3, the connection component 3 is a ring structure, the connection component 3 is arranged in the corresponding groove, and a sealing member is provided between the connection component 3 and the groove;

[0041] An outer shell 5, the outer shell 5 is connected to the housing 1 through the connection component 3.

[0042] It should also be noted that by providing a groove on the outer wall of the housing 1 and arranging the ring-shaped connection component 3 in the groove, and cooperating with the sealing member, a multiple sealing effect is achieved. This design effectively prevents problems such as air leakage and water leakage, and improves the overall sealing performance of the electrical connector.

[0043] Exemplarily, the connection component 3 includes a welding ring 302 and a limiting ring 303, the limiting ring 303 is arranged on the inner wall of the welding ring 302, the limiting ring 303 is located in the groove, a sealing gap is provided between the limiting ring 303 and the groove, and the sealing member is arranged in the sealing gap.

[0044] It should also be noted that the setting of the limit ring 303 can limit the welding ring 302 or other components connected thereto, preventing excessive movement or inclination during operation, thereby enhancing the stability of the entire connection assembly 3. The existence of the sealing gap allows for a certain amount of deformation and adaptation, which helps to maintain the sealing performance when the connection assembly 3 is subjected to pressure or temperature changes.

[0045] Furthermore, it should be noted that the limit ring 303 can also play a role in buffering and shock absorption, protecting the welding ring 302 and other components connected thereto from the effects of impact and vibration.

[0046] Exemplarily, the connection assembly 3 includes a connection cylinder 301, one end of the connection cylinder 301 is connected to the welding ring 302, and the outer diameter of the connection cylinder 301 is smaller than the outer diameter of the welding ring 302.

[0047] It should also be noted that the outer diameter of the connection cylinder 301 is smaller than the outer diameter of the connection assembly 3 in order to reduce the overall size. While maintaining the connection function, the occupied space of the entire connection assembly 3 can be reduced, making the entire structure more compact.

[0048] Exemplarily, a filling flow channel is provided between the connection cylinder 301 and the housing 1. The filling flow channel is connected to the sealing gap, and the sealing member is potting glue 4. The sealing member is filled in the filling flow channel and the sealing gap.

[0049] It should also be noted that by connecting the filling flow channel and the sealing gap, sealing media such as lubricating oil and sealing liquid can be introduced. These media can fill and seal the tiny gaps between the connection cylinder 301 and the housing 1, preventing external media or internal fluid leakage. Between rotating or sliding components, the sealing media can play a lubricating role, reducing friction and wear between components and extending the service life of the equipment. The design of the filling flow channel helps to balance the pressure difference between the connection cylinder 301 and the housing 1, preventing sealing failure caused by uneven pressure.

[0050] Exemplarily, the sealing member is provided on the end face of the pin 2 extending from the connection end 101.

[0051] It should also be noted that the potting adhesive 4 can tightly fill the tiny gap between the pin 2 and the housing 1, effectively preventing the infiltration of external gas or liquid, improving the overall sealing performance. Through the fixing effect of the potting adhesive 4, the connection between the pin 2 and the housing 1 becomes more stable, reducing the risk of loosening or falling off caused by vibration or external force. The potting adhesive 4 can also provide a certain degree of protection for the exposed part of the pin 2, preventing it from being corroded, worn or mechanically damaged, and extending the service life of the pin 2. The potting adhesive 4 usually has good insulation performance, which can ensure the electrical isolation between the pin 2 and the housing 1, as well as between the pin 2 and the external circuit, improving the safety and reliability of the electrical joint.

[0052] Exemplarily, both the connecting cylinder 301 and the welding ring 302 are made of metal, and the connecting cylinder 301 and the welding ring 302 are integrally formed.

[0053] It should also be noted that the connecting cylinder 301 and the welding ring 302 made of metal have relatively high strength and hardness, can withstand large external forces and pressures, and ensure the stability and durability of the electrical joint under harsh working conditions.

[0054] Exemplarily, the limiting ring 303 is formed by plastic molding, and the limiting ring 303 is injection-molded on the welding ring 302.

[0055] It should also be noted that the plastic limiting ring 303 injection-molded on the welding ring 302 can limit the movement range of the connecting component 3, ensure that the connecting component 3 works at a predetermined position and angle. The tight combination between the plastic limiting ring 303 and the welding ring 302 can enhance the fixing property of the connecting component 3, preventing the connecting component 3 from loosening or falling off during operation.

[0056] Exemplarily, the connecting component 3 is welded to the outer shell 5.

[0057] It should also be noted that the welded connection can ensure a firm connection between the connecting component 3 and the outer shell 5, with relatively high connection strength, can withstand large external forces and pressures. The welded connection can achieve a seamless connection between the connecting component 3 and the outer shell 5, effectively preventing the infiltration of external gas or liquid, and improving the overall sealing performance.

[0058] Exemplarily, the outer wall of the outer shell 5 is flush with the outer wall of the welding ring 302.

[0059] It should also be noted that the outer wall of the housing 5 is flush with the outer wall of the welding ring 302. This design can form a receiving space for receiving the seal, ensuring that the outer peripheral surface of the seal fits against the circumferential surface of the welding ring 302, improving the sealing performance, preventing the surface of the seal facing away from the body from interfering with the installation of the electrical connector (such as the aluminum bar), ensuring that the welding slag generated after welding does not expose on the upper surface of the housing 5, and ensuring that the upper surface of the housing 5 is a flat surface, thus improving the connection stability between the electrical connector and the housing 5.

[0060] Exemplarily, the inner wall of the limiting ring 303 is wavy, and a sealing gap is formed between the connecting assembly 3 and the groove, and the seal is filled in the sealing gap.

[0061] It should also be noted that the wavy inner wall design increases the contact area between the limiting ring 303 and adjacent components such as the connecting cylinder 301 or the welding ring 302. This helps to improve the connection stability and reliability. The wavy structure can compensate for minor errors in the manufacturing or assembly process to a certain extent, ensuring a good seal between the limiting ring 303 and adjacent components and preventing gas or liquid leakage. When subjected to external forces, the wavy limiting ring 303 can absorb and disperse the impact energy, acting as a buffer to protect adjacent components from damage.

[0062] The present application also proposes a sealing method, and the specific step process is as follows:

[0063] S1: Preparation stage. There is a pin 2 inside the housing 1. The housing includes a connection end 101, and the pin 2 extends from the connection end 101. A groove is provided on the outer wall of the housing 1, and the groove surrounds the connection end 101.

[0064] S2: Installation stage. The annular connecting assembly 3 is arranged in the groove of the housing 1. The connecting assembly 3 is used to connect the housing 5. The outer circular part of the welding ring 302 and the housing 5 are laser welded or welded by other welding methods to achieve a firm connection between the welding ring 302 and the housing 5, thereby achieving good sealing from the housing 5 part.

[0065] S3: Sealing stage. A seal is added between the connecting assembly 3 and the groove of the housing 1. The seal is arranged to provide a sealing effect between the connecting assembly 3 and the groove of the housing 1. A groove or gap for potting compound 4 to be potted is left between the housing 1 and the welding ring 302. The housing 5 and the connecting assembly 3 are welded, and the potting compound 4 is filled into the groove or gap to achieve the final seal between the housing 1, the welding ring 302 and the pin 2 pairwise. The potting compound 4 can also be applied to the end face where the pin 2 extends out of the housing 1 to enhance the sealing effect.

[0066] S4: In the testing stage, after sealing is completed, check the sealing performance of the electrical connector and conduct necessary performance tests.

[0067] In summary, by adopting the electrical connector sealing structure and method of the present invention, a multiple sealing effect can be achieved by providing a groove on the outer wall of the housing 1 and arranging the connecting component 3 with an annular structure in the groove and cooperating with the seal. This design effectively prevents problems such as air leakage and water leakage. Due to the buffering and sealing of the seal between the connecting component and the groove, the sealing performance problem caused by the inconsistent coefficient of thermal expansion of the material itself is effectively solved, and the overall sealing performance of the electrical connector is improved.

[0068] The above embodiments are only used to exemplarily illustrate the principle and efficacy of the present invention, rather than to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An electrical connector sealing structure, characterized in that, Comprising: A housing, the housing includes a connection end, a pin is provided inside the housing, the pin extends out from the connection end, a groove is provided on the outer wall of the housing, and the groove is arranged around the connection end; A connection component, the connection component is in a ring structure, the connection component is arranged in the corresponding groove, and a seal is provided between the connection component and the groove; An outer shell, the outer shell is connected to the housing through the connection component.

2. The electrical connector sealing structure according to claim 1, wherein: The connection component includes a welding ring and a limiting ring, the limiting ring is arranged on the inner wall of the welding ring, the limiting ring is located in the groove, a sealing gap is provided between the limiting ring and the groove, and the seal is arranged in the sealing gap.

3. The electrical connector sealing structure according to claim 2, characterized in that: The connection component includes a connection cylinder, any end of the connection cylinder is connected to the welding ring, and the outer diameter of the outer circle of the connection cylinder is smaller than the outer diameter of the outer circle of the welding ring.

4. The electrical connector sealing structure according to claim 3, wherein: A filling channel is provided between the connection cylinder and the housing, the filling channel is communicated with the sealing gap, the seal is potting glue, and the seal is filled in the filling channel and the sealing gap.

5. An electrical connector sealing structure according to claim 4, characterized in that: The seal is provided on the end surface where the pin extends out from the connection end.

6. The electrical connector sealing structure according to claim 5, characterized in that: Both the connection cylinder and the welding ring are made of metal, and the connection cylinder and the welding ring are integrally formed.

7. The electrical connector sealing structure according to claim 6, characterized in that: The limiting ring is formed by plastic molding, and the limiting ring is injection molded on the welding ring.

8. An electrical connector sealing structure according to claim 7, characterized in that: The connection component is welded to the outer shell.

9. An electrical connector sealing structure according to claim 8, characterized in that: The outer wall of the outer shell is flush with the outer wall of the welding ring.

10. A sealing method, comprising the electrical joint sealing structure according to any one of claims 1-9, characterized in that, Comprising: A preparation stage, a pin is provided inside the housing, the housing includes a connection end, the pin extends out from the connection end, a groove is provided on the outer wall of the housing, and the groove is arranged around the connection end; An installation stage, a connection component in a ring structure is arranged in the groove of the housing, the connection component is used to connect the outer shell, and the outer circle part of the connection component is welded to the outer shell; A sealing stage, a seal is added between the connection component and the housing groove, a groove or gap for filling the seal is left between the housing and the connection component, the outer shell and the connection component are welded, and the seal is filled into the groove or gap. The seal can also be provided on the end surface where the pin extends out from the housing; A testing stage, after the sealing is completed, the sealing performance of the electrical connector is checked and tested.

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