Injection-molded sealing connector

Abstract

The invention provides an injection-molded sealed connector, and relates to the technical field of connectors, the injection-molded sealed connector comprises a shell and a contact piece, the shell comprises a first shell and a second shell which are respectively arranged at the front end and the rear end of the contact piece, and an insulator is injection-molded between the first shell and the second shell and on the outer side of the contact piece. And the contact piece, the first shell and the second shell are hermetically connected into a whole. The connector is resistant to high temperature and high pressure, low in cost, stable in performance and good in sealing performance and insulativity.

Description

Technical Field

[0001] This invention relates to the field of connector technology, specifically to an injection-molded sealed connector. Background Technology

[0002] Connectors used in oilfield environments must withstand the highly corrosive chemicals present in these environments, as well as the high temperatures and pressures, while maintaining sealing and electrical performance. Currently, mainstream connectors for oilfield environments utilize glass sintering technology, which meets the requirements of such harsh conditions. However, these products are expensive, have unstable performance, and are susceptible to sealing and electrical failures during use, especially in environments with severe vibrations. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides an injection-molded sealing connector that is low in cost, stable in performance, and has good sealing and insulation properties.

[0004] To achieve the above technical objectives, the technical solution adopted is: an injection-molded sealed connector, including a housing and a contact, wherein the housing includes a first housing and a second housing respectively disposed at the front end and rear end of the contact, and an insulator is injection-molded between the first housing and the second housing and on the outside of the contact, thereby sealing and connecting the contact, the first housing and the second housing into one unit through the injection-molded insulator.

[0005] The beneficial effects are: the insulator, molded using injection molding, seals and connects the contacts, first housing, and second housing into a single unit, facilitating molding, eliminating the need for assembly, and not being limited by connector type. The injection molding process ensures tight bonding between components, strong sealing, moisture resistance, and resistance to high temperatures and pressures. The insulator also boasts strong insulation, low cost, and stable performance.

[0006] Furthermore, an insulator is injection molded between the first mounting hole of the first housing exposed at the front end of the contact and the contact.

[0007] The beneficial effect is that by injection molding the insulator between the contact and the first housing, the sealing performance of the connector can be enhanced, while the insulation effect between the contact and the first housing can also be guaranteed.

[0008] Furthermore, an insulator is injection molded between the second mounting hole of the second housing exposed at the rear end of the contact and the contact.

[0009] The beneficial effect is that by injection molding the insulator between the contact and the second housing, the sealing performance of the connector can be enhanced, while also ensuring the insulation effect between the contact and the second housing.

[0010] Furthermore, the first or second mounting hole is a round hole, and multiple first or second mounting holes are arranged in a row and interconnected.

[0011] The beneficial effects are: the interconnected holes are easy to form, and the connector is smaller in size compared to single-hole connectors. Compared to other types of through holes, it ensures that the exposed area of ​​the insulation between the hole and the contact is basically the same. The protruding edges between the holes are in the same position, which can play a shielding role and ensure the accuracy of the test signals collected by the connector.

[0012] Furthermore, the wall of the first or second mounting hole is provided with a groove or a rib.

[0013] The beneficial effects are: it enhances the sealing performance between the first and second mounting holes and the insulator, and also prevents detachment.

[0014] Furthermore, multiple grooves are formed on the surface of the contact to increase the sealing length and area between the contact and the insulator.

[0015] The beneficial effects are: increased bonding force between the contact and the insulator, improved sealing performance under high temperature and high pressure environments, reduced leakage, and increased moisture protection.

[0016] Furthermore, the first or second housing is made of a high-temperature resistant metal material.

[0017] The beneficial effects are: when used in harsh environments, the first or second housing is not easily worn or deformed, and when combined with an insulator, it has stronger stability.

[0018] Furthermore, the first or second housing is provided with a boss / edge that is inserted into the insulator to provide support.

[0019] The beneficial effect is that the boss / edge provides support to the insulator, preventing the insulator from creeping and deforming under high temperature and high pressure, which would affect the product performance.

[0020] Furthermore, the insulator is made of polyaryletherketone or thermosetting plastic.

[0021] The beneficial effects are: polyaryletherketone or thermosetting plastics are not easily deformed under high temperature and high pressure conditions, have good insulation properties, protect the contacts from conduction between the contacts and the housing, and between the contacts themselves, thus avoiding any impact on electrical signals.

[0022] Furthermore, the inner circumferential surface of the first or second housing is provided with an annular groove or rib capable of generating an interaction force with the insulator.

[0023] The beneficial effects are: through the interaction between the annular groove structure or the rib structure and the injection-molded insulator, relative displacement between the insulator and the first or second housing is prevented, the first or second housing is prevented from detaching from the insulator, and the service life of the product is improved.

[0024] Furthermore, the lower surface of the second housing is provided with a step for supporting the connector.

[0025] The beneficial effect is that the steps allow contact with the equipment at the installation location, providing support for the entire connector and preventing deformation and displacement of the product.

[0026] Furthermore, a step for supporting the connector is provided on each side of the lower surface of the second housing, and the space between the two steps is the wiring space.

[0027] The beneficial effects are: by setting steps on both sides, different step parameters can be set according to the equipment structure at the installation location, and wiring space can be left between the steps without affecting the support of the steps, which facilitates wiring. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Top view; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is an exploded view of the present invention; Figure 5 for Figure 1 A bottom view; Figure 6 This is a schematic diagram of the contact element of the present invention; Figure 7 This is a schematic diagram of the second housing of the present invention; Figure 8 This is a schematic diagram of the insulator of the present invention; Figure 9 This is a cross-sectional view of the first housing of the present invention; Figure 10 for Figure 9 A magnified view of a portion of the image; Figure 11 This is a schematic diagram of the structure of the first mounting hole of the present invention; Reference numerals: 1. Contact element; 101. Groove; 2. Insulator; 3. First housing; 301. First mounting hole; 301-1. Groove or rib; 301-2. Edge; 302. Annular groove or rib; 4. Second housing; 401. Second mounting hole; 402. Boss / edge; 403. Step; 404. Wiring space. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0030] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0031] The structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0032] The orientations or positional relationships indicated by terms such as "up," "down," "left," "right," "middle," "longitudinal," "lateral," "horizontal," "inner," "outer," "radial," and "circumferential" in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0033] like Figure 1 , Figure 5 As shown, an injection-molded sealing connector includes a housing and a contact 1. The housing includes a first housing 3 and a second housing 4 respectively disposed at the front end and rear end of the contact 1. Here, the front end refers to the upward-facing end of the contact 1, and the rear end refers to the downward-facing end. The structural shape of the first housing 3 and the second housing 4 is related to the equipment at the installation location and can be set to circular or rectangular. For example, if the first housing 3 is mated at a geological formation and the second housing 4 is mated at a side well pipe wall, their surface structures are as follows: Figure 1 As shown, the upper surface of the first housing 3 can be configured as an arc surface, and the bottom surface of the second housing 4 is a flat surface, with the contacts 1 arranged in a fan shape inside. The material can be any metal material that meets the usage requirements, enabling the transmission of electrical signals. The connector in this application is a 205℃@175MPa high-temperature, high-pressure injection-fit connector.

[0034] An insulator 2 is injection molded between the first housing 3 and the second housing 4, and on the outside of the contact 1, sealing and connecting the contact 1, the first housing 3, and the second housing 4 into a single unit. The injection-molded insulator 2 allows for the fabrication of circular connectors, rectangular connectors, etc., without being limited by the connector structure. During injection molding, the contact 1, the first housing 3, and the second housing 4 are assembled into a mold using an integral injection molding process. The insulator 2 is formed through injection molding, ensuring that the electrical properties, such as withstand voltage and insulation resistance (normal state and moisture), between the contact 1 and the first housing 3, between the contact 1 and the second housing 4, between adjacent contact 1 units, and between the first housing 3 and the second housing 4, meet the usage requirements.

[0035] like Figure 2 As shown, an insulator 2 is injection molded between the first mounting hole 301 of the first housing 3 exposed at the front end of the contact 1 and the contact 1, and the end face of the contact on the side of the first mounting hole 301 can contact the ground.

[0036] like Figure 5 As shown, an insulator 2 is injection molded between the second mounting hole 401 of the second housing 4 exposed at the rear end of the contact 1 and the contact 1. The size of the second mounting hole 401 ensures that the end face of the contact is convenient for collecting test signals.

[0037] The first mounting hole 301 or the second mounting hole 401 is a round hole, and multiple first mounting holes 301 or second mounting holes 401 are arranged in a row and interconnected. For example... Figure 11 As shown, taking the first mounting hole 301 as an example, there are 12 first mounting holes 301 with equal diameters. The holes are connected to each other, and the width of the intersection is smaller than the diameter of the hole. They are not machined into through slots. Finally, a shielding edge 301-2 is formed between the holes. The width of the intersection of the holes is consistent, which ensures that the exposed area of ​​the insulator outside the contact is as consistent as possible. The position of the edge is fixed to ensure the accuracy of the ground test signal collected by the connector.

[0038] The wall of the first mounting hole 301 or the second mounting hole 401 is provided with a groove or a rib 301-1. For example... Figure 11 As shown, taking the first mounting hole 301 as an example, the hole wall has multiple grooves or ribs 301-1.

[0039] like Figure 6 As shown, multiple grooves 101 are formed on the surface of the contact 1 to increase the sealing length and area between the contact 1 and the insulator 2. The shape and structure of the grooves 101 can be rectangular, conical, U-shaped, or other shapes and structures, thus ensuring that the contact 1 and the insulator 2 are sealed and leak-proof under high temperature and high pressure environments.

[0040] The first housing 3 or the second housing 4 is made of high-temperature resistant metal material. The housing made of high-temperature resistant metal material ensures that the connector is not easily worn when in contact with the well wall during use, and is not easily deformed under high temperature and high pressure conditions.

[0041] As shown in Figure 7, the first housing 3 or the second housing 4 is provided with a boss / edge 402 that is inserted into the insulator 2 to provide support. The boss / edge 402 is made of the same material as the housing and can be integrally formed. It is best to use metal material to enhance the support force, provide support for the insulator 2, and prevent the insulator from creeping and deforming under high temperature and high pressure environment, which would affect the product performance.

[0042] Insulator 2 is made of polyaryletherketone or thermosetting plastic. Insulator 2 does not deform under high temperature and high pressure conditions and maintains good insulation performance, protecting the contact 1 from conduction between the contact and the shell, and between the contact 1 and the contact 1, so as to avoid affecting the electrical signal.

[0043] like Figure 9 , Figure 10 As shown, the inner circumferential surface of the first housing 3 or the second housing 4 is provided with an annular groove or rib 302 that can generate an interaction force with the insulator 2. The need for the annular groove or rib 302 and its location are determined based on the connector design. The annular groove or rib 302 ensures that an interaction force exists between the housing and the insulator 2 during actual use, preventing relative displacement between them, thus preventing the housing from detaching or separating, and improving the product's service life.

[0044] like Figure 7 As shown, the lower surface of the second housing 4 is provided with a step 403 for supporting the connector, so that during actual use, the step on the second housing 4 contacts and engages with the well logging pipe wall. When pressure is transmitted from top to bottom, the step is in close contact with the pipe wall, providing support for the product and preventing deformation and displacement, which could damage the contact 1. In more serious cases, it could lead to product seal failure. Alternatively, another step design is as follows: a step 403 for supporting the connector is provided on each side of the lower surface of the second housing 4. The space between the two steps 403 is a wiring space 404. There are no machined bosses in the wiring space 404, which facilitates wiring.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit or restrict the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection declared by the present invention.

Claims

1. An injection-molded sealed connector, comprising a housing and a contact (1), characterized in that: The housing includes a first housing (3) and a second housing (4) respectively disposed at the front end and rear end of the contact (1), and an insulator (2) is injection molded between the first housing (3) and the second housing (4) and on the outside of the contact (1) to seal and connect the contact (1), the first housing (3) and the second housing (4) into a whole.

2. The injection-molded sealing connector as described in claim 1, characterized in that: An insulator (2) is injection molded between the first mounting hole (301) of the first housing (3) exposed at the front end of the contact (1) and the contact (1).

3. The injection-molded sealing connector as described in claim 1, characterized in that: An insulator (2) is injection molded between the second mounting hole (401) of the second housing (4) exposed at the rear end of the contact (1) and the contact (1).

4. A sealing connector molded by injection as described in claim 2 or 3, characterized in that: The first mounting hole (301) or the second mounting hole (401) is a round hole, and multiple first mounting holes (301) or second mounting holes (401) are arranged in a row and connected to each other.

5. A sealing connector molded by injection as described in claim 2 or 3, characterized in that: The first mounting hole (301) or the second mounting hole (401) has a groove or a rib (301-1) inside the hole wall.

6. The injection-molded sealing connector as described in claim 1, characterized in that: Multiple grooves (101) are formed on the surface of the contact (1) to increase the sealing length and area between the contact (1) and the insulator (2).

7. The injection-molded sealing connector as described in claim 1, characterized in that: The first shell (3) or the second shell (4) is made of high-temperature resistant metal material.

8. The injection-molded sealing connector as described in claim 1, characterized in that: The first housing (3) or the second housing (4) is provided with a boss / edge (402) that is inserted into the insulator (2) to provide support.

9. The injection-molded sealing connector as described in claim 1, characterized in that: The insulator (2) is made of polyaryletherketone or thermosetting plastic.

10. The injection-molded sealing connector as described in claim 1, characterized in that: The inner circumferential surface of the first housing (3) or the second housing (4) is provided with an annular groove or rib (302) that can generate an interaction force with the insulator (2).

11. The injection-molded sealing connector as described in claim 1, characterized in that: The lower surface of the second housing (4) is provided with a step (403) for supporting the connector.

12. The injection-molded sealing connector as described in claim 11, characterized in that: The lower surface of the second housing (4) is provided with a step (403) on each side for supporting the connector, and the space between the two steps (403) is the wiring space (404).

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