Contact welding part and pressure-bearing sealing high-temperature-resistant connector

Abstract

A contact welding part and a pressure-bearing sealing high-temperature-resistant connector belong to the field of electric connectors, a first small-diameter end of a shell transition ring is in brazed connection with the outer wall of the front end of a first boss on the rear side of a ceramic insulator, and the inner wall of the first small-diameter end is provided with a first step which is in axial stop fit with the front end face of the first boss; the second large-diameter end of the contact piece transition ring is in brazed connection with the outer wall of the rear end of the first boss, the second small-diameter end of the contact piece transition ring is in laser welding with the tail of the contact piece, and the rear end face of the first boss is in axial stop fit with the reducing part of the second large-diameter end; the plurality of contact welding parts are arranged in the shell in a penetrating manner; and the first large-diameter end of the shell transition ring is in laser welding with the shell. The contact welding part is beneficial to standardized and batch production; the contact piece transition ring is adopted as a bridge connecting piece and is suitable for welding of large-specification contact pieces; an axial pressure-bearing structure is formed by stop matching, so that reliable sealing in a high-pressure working environment is realized; and the contact piece and the shell meet electroplating requirements.

Description

Technical Field

[0001] This invention belongs to the field of electrical connector technology, specifically relating to a contact welding component and a pressure-bearing, sealed, high-temperature resistant connector. Background Technology

[0002] Existing high-temperature resistant electrical connectors mainly use a pin-sealing structure to achieve sealing between the contacts and the ceramic insulator. Furthermore, the assembly of the ceramic insulator and several contacts in these connectors is completed in a single welding operation. For example, existing patent application number 202311397894.8 discloses a high-temperature resistant ceramic brazed connector, including a housing and an insulator made of ceramic material disposed within the housing. Several through holes are parallel to each other along the axial direction within the insulator. These through holes form first and second countersunk holes on both ends of the insulator, respectively. The diameters of the first and second countersunk holes are larger than the through holes. Several pins are placed within the through holes and then ceramic brazed into the first and second countersunk holes to weld the pins to the insulator as a single unit. The specific manufacturing method of the aforementioned connector includes: Step one, placing the pins within the through holes of the insulator... The process involves creating first and second countersunk holes with diameters larger than the through hole at both ends, and placing brazing solder in the first and second countersunk holes. The second step involves placing the pin and the insulator together within a hollow housing. The third step involves placing the pin, insulator, and housing together in a vacuum furnace or hydrogen furnace, and fixing, encapsulating, and sealing them using ceramic brazing. The vacuum degree in the vacuum furnace or hydrogen furnace is no higher than 100 Pa; the brazing temperature in the vacuum furnace or hydrogen furnace is 750–1050℃, and the brazing time is 20 min–2 h. The brazing solder material includes silver-copper-titanium or a eutectic solder combining silver-copper-titanium with other metals. While the aforementioned preparation method improves the high-temperature resistance of the connector by brazing the pin, insulator, and housing as a single assembly, the following problems still exist:

[0003] (1) The aforementioned product is a single insulator multi-core brazed structure. The product needs to ensure the strength and airtightness of multiple welds in one welding process, which increases the difficulty of the brazing process and makes mass production prone to high scrap rate.

[0004] (2) Since the expansion coefficients of ceramic insulator and contact are different, as the size of the contact increases, the overstress between ceramic insulator and contact will change during high-temperature brazing. This change can easily lead to cracking of ceramic insulator or cracking of brazing weld. Therefore, this needle seal structure is suitable for welding small-sized contact, but not for welding large-sized contact.

[0005] (3) When this needle seal structure is under pressure, the axial pressure is borne by the brazed weld. Its pressure-bearing performance under high pressure working environment is limited, and it cannot achieve reliable sealing under high pressure working environment.

[0006] (4) Since the contacts, insulators and housing are brazed together in a vacuum furnace or hydrogen circuit, it is not possible to electroplate the contacts and housing according to actual needs. Summary of the Invention

[0007] In view of the technical problems existing in the existing high-temperature resistant connectors, the purpose of this invention is to propose a contact welding component and a pressure-bearing, sealed high-temperature resistant connector.

[0008] The objective of this invention is achieved through the following technical solution: a contact welding component, comprising a ceramic brazing component, the ceramic brazing component including a ceramic insulator 201, a housing transition ring 203, and a contact transition ring 204. A first boss 2012 is provided on the rear side of the ceramic insulator. The housing transition ring is sleeved on the front side of the ceramic insulator, and its first large-diameter end 2031 is used for laser welding with the mounting hole on the housing. Its first small-diameter end 2032 is brazed to the front outer wall of the first boss 2012. A first step 20321 is provided on the inner wall of the first small-diameter end. The first step and the front end face of the first boss form an axial stop fit. The second large-diameter end 2041 of the contact transition ring is brazed to the rear outer wall of the first boss 2012. The rear end face of the first boss and the diameter-changing part of the second large-diameter end form an axial stop fit. The contact 202 is inserted into the ceramic brazing component in the front-rear direction, and the second small-diameter end 2042 of the contact transition ring is laser welded to the contact tail located behind the ceramic insulator.

[0009] By employing the aforementioned technical solution, the contact welding component of the present invention has the following effects:

[0010] (1) The contact welding component is an integral part composed of ceramic insulator, contact, shell transition ring and contact transition ring after welding. Compared with the single insulator multi-core brazing structure used in existing high temperature resistant connectors, the contact welding component is a number of independent parts. It does not require multiple contacts to be brazed on a single ceramic insulator at the same time, which reduces the brazing difficulty and improves the product process stability. In addition, for contacts of the same specification, the contact welding component with the same size can be used as a standardized part, which is suitable for mass production.

[0011] (2) A contact transition ring made of Kovar alloy is added to the outside of the ceramic insulator to serve as a bridge connection between the ceramic insulator and the contact. This can be used for sealing of all specifications of contact and ceramic insulator below Φ30mm, which greatly improves the applicability of the product structure.

[0012] (3) An axial stop fit is formed between the first step and the front end face of the first boss of the shell transition ring, and between the rear end face of the first boss and the diameter change part of the second large diameter end. The aforementioned stop fit constitutes an axial pressure bearing structure, which can realize the transmission of pressure under high pressure working environment, thereby reducing the pressure borne by the brazed weld and facilitating the realization of reliable sealing under high pressure working environment.

[0013] (4) After inserting the contact into the ceramic insulator, the first small diameter end of the contact and the contact transition ring is laser welded to obtain the contact welded component. The contact does not undergo the high temperature environment of brazing, which can meet the corresponding electroplating treatment requirements.

[0014] Furthermore, the first large-diameter end 2031 and the first small-diameter end 2032 of the shell transition ring are connected by a first tapered diameter section 2033. With this additional feature, the shell transition ring made of Kovar alloy material is trumpet-shaped, and the first tapered diameter section can disperse the structural stress caused by high-temperature brazing.

[0015] Furthermore, the second large-diameter end 2041 and the second small-diameter end 2042 of the contact transition ring are connected by a second tapered section 2043. With this additional feature, the contact transition ring made of Kovar alloy material is trumpet-shaped, and the second tapered section can disperse the structural stress caused by high-temperature brazing.

[0016] Furthermore, a second step 2021 is provided on the tail of the contact element. The second minor diameter end 2042 of the contact element transition ring is laser-welded to the second step 2021, and the second minor diameter end and the radial wall surface of the second step form a stop fit in the axial direction. With the help of this additional feature, the stop fit can also form an axial pressure-bearing structure, which can realize the transmission of pressure under high pressure working environment, which helps to reduce the pressure borne by the subsequent laser weld, and further realize reliable sealing under high pressure working environment.

[0017] Furthermore, the first minor diameter end 2032 of the shell transition ring is a cylindrical body of equal diameter. This additional feature not only facilitates the setting of the first step, but also increases the contact area between the first minor diameter end and the front outer wall of the first boss, thereby improving the brazing quality.

[0018] Furthermore, both the second large-diameter end 2041 and the second small-diameter end 2042 of the contact transition ring are cylindrical bodies of equal diameter. This additional feature increases the contact area between the second large-diameter end and the rear outer wall of the first boss, as well as the contact area between the second small-diameter end and the axial wall of the second step, thus improving welding quality.

[0019] The objective of this invention is also achieved by the following technical solution: a pressure-bearing, sealed, high-temperature resistant connector, comprising a housing 10, the interior of which is divided by a wall 101 into a first chamber 1021 located on the front side and a second chamber 1022 located on the rear side. A plurality of mounting holes 1011 are provided through the wall, and a plurality of contact welding components 20 are inserted into the corresponding mounting holes along the front-rear direction. The first large-diameter end 2031 of the housing transition ring is laser welded to the front end of the corresponding mounting hole. The second chamber is provided with a support ceramic 30 for radial support of the contact welding components.

[0020] By employing the aforementioned technical solution, the pressure-bearing, sealing, high-temperature resistant connector of the present invention has the following advantages:

[0021] (1) The contact welding component is an integral part composed of ceramic insulator, contact, shell transition ring and contact transition ring after welding. Compared with the single insulator multi-core brazing structure used in existing high temperature resistant connectors, the contact welding component is a number of independent parts. It does not require multiple contacts to be brazed on a single ceramic insulator at the same time, which reduces the brazing difficulty and improves the product process stability. In addition, for contacts of the same specification, the contact welding component with the same size can be used as a standardized part, which is suitable for mass production.

[0022] (2) A contact transition ring made of Kovar alloy is added to the outside of the ceramic insulator to serve as a bridge connection between the ceramic insulator and the contact. This can be used for sealing of all specifications of contact and ceramic insulator below Φ30mm, which greatly improves the applicability of the product structure.

[0023] (3) An axial stop fit is formed between the first step and the front end face of the first boss of the shell transition ring, and between the rear end face of the first boss and the diameter change part of the second large diameter end. The aforementioned stop fit constitutes an axial pressure bearing structure, which can realize the transmission of pressure under high pressure working environment, thereby reducing the pressure borne by the brazed weld and facilitating the realization of reliable sealing under high pressure working environment.

[0024] (4) After inserting several contact welding parts into the corresponding mounting holes, the first large diameter end of the housing transition ring is laser welded to the front end of the mounting hole to obtain a pressure-bearing, sealed, high-temperature resistant connector. The housing does not undergo a brazing high-temperature environment and can meet the corresponding electroplating treatment requirements.

[0025] Furthermore, the front end of the mounting hole is provided with a groove 10111, and the outer edge of the first large-diameter end 2031 is placed in the aforementioned groove. With the help of this additional feature, not only can the contact welding parts be quickly positioned in the axial direction, which is beneficial to the subsequent laser welding process, but the connection between the housing transition ring and the housing can also be made more stable and reliable.

[0026] Furthermore, the supporting ceramic 30 is provided with a plurality of limiting holes 301 extending in the front-back direction and used to provide radial support for the contact welding components.

[0027] Furthermore, one of the matching keyway and the key is disposed on the supporting ceramic 30, and the other is disposed on the inner wall of the second chamber 1022. The supporting ceramic is inserted into the second chamber at a predetermined angle through the cooperation of the key and the keyway, and after being assembled in place, the supporting ceramic and the housing are radially anti-rotationally fitted.

[0028] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0029] Figure 1 This is a partial cross-sectional schematic diagram of an embodiment of a pressure-bearing, sealing, high-temperature resistant connector of the present invention.

[0030] Figure 2 yes Figure 1 The front view of the connector is shown.

[0031] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0032] Figure 4 This is a partial cross-sectional view of the shell in this embodiment.

[0033] Figure 5 This is a schematic diagram of the external shape of the contact welding component in this embodiment.

[0034] Figure 6 This is a schematic diagram of the external shape of the ceramic brazing component in this embodiment.

[0035] Figure 7 This is a schematic diagram of the external shape of the ceramic insulator in this embodiment.

[0036] Figure 8 This is a schematic diagram of the outer shape of the shell transition ring in this embodiment.

[0037] Figure 9 This is a schematic diagram of the external shape of the contact transition ring in this embodiment.

[0038] Figure 10 This is a schematic diagram of the external shape of the contact element in this embodiment.

[0039] Figure 11 This is a partial cross-sectional view of the supporting ceramic in this embodiment.

[0040] Wherein: 10-shell, 101-wall, 1011-mounting hole, 10111-groove, 1021-first chamber, 1022-second chamber, 20-contact welding component, 201-ceramic insulator, 2011-channel, 2012-first boss, 2013-second boss, 202-contact, 2021-second step, 203-shell transition ring, 2031-first large diameter end, 2032-first small diameter end, 20321-first step, 2033-first tapering section, 204-contact transition ring, 2041-second large diameter end, 2042-second small diameter end, 2043-second tapering section, 30-support ceramic, 301-limiting hole, 302-keyway. Detailed Implementation

[0041] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0042] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] Furthermore, the terms "first or I," "second or II," "third or III," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first or I," "second or II," or "third or III" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Please see Figure 1 and Figure 2 This is an embodiment of a pressure-bearing, sealed, high-temperature resistant connector of the present invention. This embodiment takes the mating end of the connector as the front end and the opposite end as the rear end, and specifically includes a housing 10, a plurality of contact welding components 20 inserted into the housing along the axial direction (i.e., the front-to-back direction), and a support ceramic 30 disposed inside the rear end of the housing for radial support of the contact welding components.

[0046] Please also refer to Figure 4 In this embodiment, the interior of the housing is divided into a first chamber 1021 at the front and a second chamber 1022 at the rear by a wall 101. The wall has several mounting holes 1011 through which the contact welding components 20 are assembled. The front end of the housing is used to connect to the mating end of the adapter connector. The first chamber is used for the mating end of the adapter contact to be inserted and connected to the mating end of the contact welding components to achieve electrical signal transmission. The second chamber is equipped with a support ceramic 30 for radial support of the contact welding components. The rear end of the housing is used to connect a tail accessory that can axially limit the support ceramic. Specifically, in this embodiment, the housing is a metal housing and adopts a rotating body structure.

[0047] Please also refer to Figure 5 In this embodiment, the contact welding component is an integral part composed of ceramic insulator 201, contact 202, housing transition ring 203, and contact transition ring 204 after welding. Compared with the single insulator multi-core brazing structure used in existing high-temperature connectors, the contact welding component in this embodiment is a number of independent parts, which eliminates the need to braze multiple contacts on a single ceramic insulator at the same time, reduces the brazing difficulty, improves the product process stability, and for contacts of the same specification, the contact welding component with the same size can be used as a standardized part, which is suitable for mass production.

[0048] For details, please refer to the following: Figure 7 The ceramic insulator 201 has a rotating structure. The interior of the ceramic insulator has a channel 2011 extending in the front-to-back direction, and a first boss 2012 is provided on its rear side. The front and rear outer walls of the first boss are metallized to enable subsequent brazing connection.

[0049] For details, please refer to the following: Figure 8The housing transition ring 203 is a thin-walled rotating body structure, including a first large-diameter end 2031 and a first small-diameter end 2032. The housing transition ring is sleeved on the front side of the ceramic insulator, and the front outer wall of the first small-diameter end 2032 and the first boss 2012 are fitted together. The corresponding fitting gap is filled with brazing filler metal for brazing connection. The front end of the first large-diameter end 2031 and the corresponding mounting hole 1011 are laser welded, thereby assembling the contact welding parts into the corresponding mounting holes. At the same time, a first step 20321 is provided on the inner wall of the first small-diameter end. The first step and the front end face of the first boss form an axial stop fit (e.g., Figure 3 As shown, this stop fit constitutes an axial pressure-bearing structure, enabling pressure transmission under high-pressure working conditions, thereby reducing the pressure borne by the brazed weld and facilitating reliable sealing under high-pressure working conditions. Furthermore, the first small-diameter end 2032 is designed as a cylindrical body of a certain length with a uniform diameter, which not only facilitates the setting of the first step but also increases the contact area with the front outer wall of the first boss, thus improving brazing quality. Furthermore, the front end of the mounting hole 1011 is provided with a groove 10111, and the outer edge of the first large-diameter end 2031 is placed within the aforementioned groove. This not only enables rapid axial positioning of the contact welding components and facilitates subsequent laser welding processes but also makes the connection between the shell transition ring and the shell more stable and reliable. Furthermore, the shell transition ring is made of Kovar alloy and designed in a trumpet shape. The first tapered diameter section 2033 connects the first large diameter end and the first small diameter end. The first tapered diameter section can disperse the structural stress caused by high-temperature brazing. Furthermore, in order to improve the stress dispersion effect, all diameter-changing parts on the shell transition ring (such as the connection between the first large diameter end and the first tapered diameter section, the connection between the first step and the first small diameter end, and the connection between the first small diameter end and the first tapered diameter section) are designed with rounded corners.

[0050] For details, please refer to the following: Figure 9 The contact transition ring 204 is a thin-walled rotating body structure, including a second large-diameter end 2041 and a second small-diameter end 2042. The second large-diameter end 2041 mates with the rear outer wall of the first boss 2012, and the corresponding mating gap is filled with brazing filler metal for brazing connection. The rear end face of the first boss 2012 forms an axial stop fit with the diameter-changing part of the second large-diameter end (e.g., Figure 3As shown, this stop fit constitutes an axial pressure-bearing structure, enabling pressure transmission under high-pressure working conditions, thereby reducing the pressure borne by the brazed weld and facilitating reliable sealing under high-pressure working conditions. Furthermore, the second large-diameter end 2041 is designed as a cylindrical body of a certain length with a constant diameter, increasing the contact area with the rear outer wall of the first boss and improving brazing quality. Similarly, the second small-diameter end 2042 is also designed as a cylindrical body of a certain length with a constant diameter. Furthermore, the contact transition ring is made of Kovar alloy and designed in a trumpet shape, using a second tapered diameter section 2043 to connect the second large-diameter end and the second small-diameter end. This tapered diameter section helps to disperse the structural stress caused by high-temperature brazing. Moreover, to further improve the stress dispersion effect, all diameter-changing parts on the contact transition ring (e.g., the connection between the second large-diameter end and the second tapered diameter section, and the connection between the second small-diameter end and the second tapered diameter section) are rounded.

[0051] Using the aforementioned design, the housing transition ring, contact transition ring, and ceramic insulator are formed by brazing. Figure 6 The ceramic brazing component shown has a first step and a diameter-changing section at the second large-diameter end that are in axial stop contact with the front and rear faces of the first boss on the ceramic insulator, forming an axial pressure-bearing structure. This reduces the pressure borne by the brazed weld and facilitates reliable sealing under high-pressure operating conditions. Furthermore, a second boss 2013 is provided on the outer wall of the first boss 2012, located between the first small-diameter end of the housing transition ring and the second large-diameter end of the contact transition ring. The second boss enables insulation between the housing transition ring and the contact transition ring.

[0052] Please also refer to Figure 10 In this embodiment, the contact element is made of Kovar alloy. A second step 2021 is provided on the tail of the contact element located behind the ceramic insulator, and its outer wall is entirely electroplated with a high-temperature resistant coating. Please also refer to... Figure 6 The contact 202 is inserted into the channel 2011 on the ceramic insulator in the front-rear direction. The insulation between the housing transition ring and the front side of the contact is achieved by the ceramic insulator located on the front side of the first boss. The second small-diameter end 2042 of the contact transition ring and the second step 2021 at the tail of the contact form a stop fit in the axial direction. This stop fit can also form an axial pressure-bearing structure, which can realize the transmission of pressure under high-pressure working conditions, which helps to reduce the pressure borne by the subsequent laser weld, and further realizes reliable sealing under high-pressure working conditions. After removing the coating on the radial and axial wall surfaces that make up the second step, laser welding is performed on the second small-diameter end and the radial and axial wall surfaces of the second step to obtain the desired result. Figure 5The contact welding component is shown. In this embodiment, a contact transition ring made of Kovar alloy is added to the outside of the ceramic insulator, which serves as a bridge connection between the ceramic insulator and the contact. This is applicable to the sealing of all specifications of contact components and ceramic insulators below Φ30mm, greatly improving the applicability of the product structure. At the same time, the ceramic insulator, the shell transition ring, and the contact transition ring are first brazed to obtain a ceramic brazed component. Then, the contact is inserted into the ceramic insulator, and the contact and the contact transition ring are laser welded to obtain the contact welding component. The contact does not undergo the high temperature environment of brazing, which can meet the corresponding electroplating treatment requirements.

[0053] With the aforementioned design, several contact welding components 20 are inserted into the corresponding mounting holes 1011, so that the front end of the contact 202 is located in the first chamber 1021 on the housing. Then, the first large diameter end 2031 of the housing transition ring is laser welded to the front end of the mounting hole, and the supporting ceramic 30 is installed in the second chamber 1022 to obtain a pressure-bearing, sealed, high-temperature resistant connector. The housing does not undergo the high-temperature environment of brazing and can meet the corresponding electroplating treatment requirements.

[0054] Please see Figure 11 In this embodiment, the supporting ceramic 30 is a rotating structure adapted to the second chamber 1022. A limiting hole 301 extending in the front-rear direction is provided through it. After the contact welding component is installed into the housing, it is supported only by the large-diameter end of the housing transition ring and the welding portion at the front end of the mounting hole, resulting in an overall cantilevered state. The limiting holes on the supporting ceramic installed in the second chamber provide radial support for the corresponding contact welding component, preventing deformation of the parts. Furthermore, the supporting ceramic is also provided with a keyway 302 extending in the front-rear direction. Correspondingly, the inner wall of the second chamber is provided with a protruding key extending in the front-rear direction. The cooperation of the protruding key and the keyway allows the supporting ceramic to be installed into the second chamber at a predetermined angle. After assembly, the supporting ceramic and the housing are in a radial anti-rotation fit.

[0055] The processing procedure for a pressure-bearing, sealed, high-temperature resistant connector in this embodiment is as follows:

[0056] Step 1: After fitting the housing transition ring 203 and the contact transition ring 204 onto the front and rear sides of the ceramic insulator 201 respectively, braze the first small diameter end 2032 to the front outer wall of the first boss 2012 and the second large diameter end 2041 to the rear outer wall of the first boss to obtain the ceramic brazed component.

[0057] Step 2: Remove the plating on the radial and axial walls of the contact element that form the second step 2021;

[0058] Step 3: After inserting the contact 202 into the channel 2011 on the ceramic insulator 201, the second small diameter end 2042 of the contact transition ring is laser welded to the second step 2021 to obtain the contact welded component.

[0059] Step 4: After inserting the contact welding component 20 into the mounting hole 1011 on the wall 101, the first large diameter end 2031 of the housing transition ring is laser welded to the housing 10 at the front end of the mounting hole. Finally, the ceramic 30 is supported in the second cavity of the housing to complete the assembly of the pressure-bearing, sealing, high-temperature resistant structural connector.

[0060] The high-temperature resistant connector with the aforementioned axial pressure-bearing structure in this embodiment has a pressure-bearing capacity of over 60MPa, exhibiting excellent pressure-bearing capacity under high-pressure working conditions and meeting axial sealing requirements below 800℃.

[0061] In this embodiment, the shell adopts a rotating body structure. Of course, in other embodiments of the present invention, the shell does not adopt a rotating body structure, but can be a rectangular structure or other irregular structure.

[0062] In this embodiment, a second boss is provided on the first boss of the ceramic insulator to insulate the housing transition ring and the contact transition ring. Of course, in other embodiments of the present invention, the second boss can be removed if the distance between the first small diameter end of the housing transition ring and the second large diameter end of the contact transition ring is long enough.

[0063] In this embodiment, the diameter-changing section between the first large-diameter end and the first small-diameter end of the housing transition ring is a first tapered diameter-changing section. Of course, in other embodiments of the present invention, the diameter-changing section between the first large-diameter end and the first small-diameter end of the housing transition ring can be a first right-angle diameter-changing section.

[0064] In this embodiment, the front end of the mounting hole on the housing is provided with a groove, and the outer edge of the first large diameter end is placed in the aforementioned groove. Of course, in other embodiments of the present invention, if the housing transition ring is fixedly connected to the metal housing, its maximum pressure bearing capacity can meet the pressure requirements of the corresponding working environment for the connector. In this case, the aforementioned groove can be removed, making the processing process simpler and the connector structure simple and compact.

[0065] In this embodiment, the diameter-changing section between the second major diameter end and the second minor diameter end of the contact transition ring is a second tapered diameter-changing section. Of course, in other embodiments of the present invention, the diameter-changing section between the second major diameter end and the second minor diameter end of the contact transition ring can be a second right-angle diameter-changing section.

[0066] In this embodiment, the supporting ceramic is provided with a keyway extending in the front-to-back direction, and the inner wall of the second chamber is provided with a convex key that matches the aforementioned keyway. Of course, in other embodiments of the present invention, the inner wall of the second chamber is provided with a keyway extending in the front-to-back direction, and the supporting ceramic is provided with a convex key that matches the aforementioned keyway.

[0067] The above description is merely a preferred embodiment of the present invention. Any simple modifications, equivalent changes, and alterations made by those skilled in the art to the above embodiments without departing from the scope of the present invention and based on the technical essence of the present invention shall still fall within the scope of the present invention.

Claims

1. A contact welding component, characterized in that: The system includes a ceramic brazing component, comprising a ceramic insulator (201), a housing transition ring (203), and a contact transition ring (204). A first boss (2012) is provided on the rear side of the ceramic insulator. The housing transition ring is fitted onto the front side of the ceramic insulator, and its first large-diameter end (2031) is used for laser welding to the mounting hole on the housing. Its first small-diameter end (2032) is brazed to the outer wall of the front end of the first boss (2012). A first step is provided on the inner wall of the first small-diameter end. (20321) The front end face of the first step and the first boss forms an axial stop fit. The second large diameter end (2041) of the contact transition ring and the rear outer wall of the first boss (2012) are brazed together. The rear end face of the first boss and the diameter-changing part of the second large diameter end form an axial stop fit. The contact (202) is mounted on the ceramic brazing component in the front-back direction and the second small diameter end (2042) of the contact transition ring is laser welded to the contact tail located behind the ceramic insulator.

2. The contact welding component according to claim 1, characterized in that: The first large diameter end (2031) and the first small diameter end (2032) of the shell transition ring are connected by the first tapered diameter section (2033).

3. The contact welding component according to claim 1, characterized in that: The second large diameter end (2041) and the second small diameter end (2042) of the contact transition ring are connected by a second tapered diameter section (2043).

4. A contact welding component according to claim 1, characterized in that: A second step (2021) is provided on the tail of the contact element. The second minor diameter end (2042) of the contact element transition ring is laser welded to the second step (2021), and the second minor diameter end and the radial wall surface of the second step form a stop fit in the axial direction.

5. A contact welding component according to any one of claims 1-4, characterized in that: The first small-diameter end (2032) of the shell transition ring is a cylindrical body of equal diameter.

6. A contact welding component according to any one of claims 1-4, characterized in that: The second large diameter end (2041) and the second small diameter end (2042) of the contact transition ring are both cylindrical bodies of equal diameter.

7. A pressure-bearing, sealed, high-temperature resistant connector, comprising a housing (10), the interior of which is divided by a wall (101) into a first chamber (1021) located on the front side and a second chamber (1022) located on the rear side, the wall being provided with a plurality of mounting holes (1011), characterized in that: The contact welding component (20) of any one of claims 1-6 is inserted into the corresponding mounting hole in the front-back direction, the first large diameter end (2031) of the housing transition ring is laser welded to the front end of the corresponding mounting hole, and the second cavity is provided with a support ceramic (30) for radial support of the contact welding component.

8. A pressure-bearing, sealed, high-temperature resistant connector according to claim 7, characterized in that: The front end of the mounting hole is provided with a groove (10111), and the outer edge of the first large diameter end (2031) is placed in the aforementioned groove.

9. A pressure-bearing, sealed, high-temperature resistant connector according to claim 7, characterized in that: A plurality of limiting holes (301) are provided through the supporting ceramic (30) and extend in the front-back direction for radial support of the contact welding parts.

10. A pressure-bearing, sealed, high-temperature resistant connector according to claim 7, characterized in that: One of the matching keyways and convex keys is disposed on the supporting ceramic (30), and the other is disposed on the inner wall of the second chamber (1022).

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