CN214378976U - Glass sintering electric connector - Google Patents
Glass sintering electric connector Download PDFInfo
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- CN214378976U CN214378976U CN202120727567.4U CN202120727567U CN214378976U CN 214378976 U CN214378976 U CN 214378976U CN 202120727567 U CN202120727567 U CN 202120727567U CN 214378976 U CN214378976 U CN 214378976U
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Abstract
The utility model provides a glass sintering electric connector, its electric connector include shell, metal base, contact, and metal base outer lane cover is equipped with the shell, through welded seal fixed connection between metal base and the shell, and metal base passes through glass sintering seal fixed connection with the contact, and the shell steadilys decrease in proper order with metal base's coefficient of thermal expansion. The utility model provides a glass sintering electric connector has realized welding glass sintering electric connector on the aluminum alloy mounting panel, guarantees the air tightness, satisfies and equips lightweight, energy-conserving development demand.
Description
Technical Field
The utility model belongs to the technical field of the electric connector, concretely relates to glass sintering electric connector.
Background
The active phased array radar has the characteristics of fast wave speed scanning, large power aperture area, flexible waveform and the like, can simultaneously complete various functions of early warning, tracking, guidance, fire control and the like, is the mainstream technology of the current radar, and is widely applied to the fields of ground defense, ship defense, missile guidance, airborne fire control, satellite navigation and the like. The T/R assembly is the most key and basic component unit in the phase control radar, one phase control radar can use thousands of T/R assemblies, a large number of glass sintering sealing electric connectors are needed for realizing the functions of transmission and sealing of internal and external electric signals of the T/R assemblies, and the glass sealing connectors are fixed in a welding installation mode for minimizing occupied space and ensuring air tightness, as shown in figure 1.
At present, the T/R component of the user is made of Fe-Ni-Co wave seal gold or silicon-aluminum alloy, and the corresponding thermal expansion coefficients of the two materials are about 5 multiplied by 10-6/° C or 11 × 10-6However, the conventional glass sintered sealing electrical connector adopts a nickel-cobalt wave-sealed gold shell and a nickel-cobalt wave-sealed gold contact member for matching sealing (as disclosed in chinese patent No. CN 202906087U), and the thermal expansion coefficient of the conventional glass sintered sealing electrical connector is not large compared with that of a user T/R component shell material, so that the glass is not cracked due to thermal stress during the user welding process.
In order to reduce weight and cost, the selection of aluminum alloy for the T/R component shell is inevitable for users, but the traditional FeNiCo wave seal alloy sintered glass sealed connector has the expansion coefficient of the material and the T/R component aluminum alloy shell (the thermal expansion coefficient is about 23 multiplied by 10)-6/° c), too large stress during welding, resulting in stress cracking of the glass, low percent of pass of sealability, and the potential risk of gradual air leakage along with the release of welding stress during subsequent use.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a glass sintering electric connector has realized welding glass sintering electric connector on the aluminum alloy mounting panel, guarantees the air tightness, satisfies and equips lightweight, energy-conserving development demand.
The utility model discloses a following technical scheme can realize:
the utility model provides a glass sintering electric connector, which comprises an outer shell, the metal base, the contact, metal base outer lane cover is equipped with the shell, through welded seal fixed connection between metal base and the shell, metal base and contact pass through glass sintering seal fixed connection, the shell descends in proper order with metal base's coefficient of thermal expansion, form the transition, effectively avoid leading to welding thermal stress too big because of the coefficient of expansion difference is great between the welding part, reduced welding stress, avoided the glass fracture, guaranteed sealing performance.
In order to make the thermal expansion coefficients of all parts form equal gradient decrease, the shell material is copper or copper alloy, and the metal base material is low-carbon steel.
The thermal expansion coefficients of the metal base and the contact element are matched, so that the sintering quality of glass is ensured, and the sealing property and the reliability are further ensured.
In order to match the thermal expansion coefficient of the metal base, the contact material is low carbon steel.
The inner ring of the tail part of the shell is welded and fixed with the metal base, and the outer ring of the head part of the shell is provided with a boss for positioning and installation.
The outer surfaces of the metal base and the shell are plated with gold, the metal base and the shell are welded, sealed and fixedly connected through eutectic gold-tin solder, no soldering flux is needed when the metal base and the shell are welded with a gold layer at 300 ℃, pollution of glass and a contact element by an organic solvent is avoided, and electrical performance is guaranteed.
The low-carbon steel material is selected to meet the requirement that the thermal expansion coefficient is gradually decreased in an equal gradient mode, but the salt spray resistance of the low-carbon steel material is poor, and in order to improve the salt spray performance of the product, the metal base is provided with the sealing gasket on the butt joint end face, the sealing gasket wraps the root position of the contact piece extending out of the glass, the sealing gasket is compressed after the electric connector is in butt joint, the metal base is isolated from the outside, and the bottom of the metal base and the root of the contact piece are prevented from being corroded by salt spray.
The metal base is provided with a plurality of through holes, the contact element penetrates through the through holes, two ends of the contact element extend out of the through holes, and the contact element is fixedly connected with the through holes through glass sintering.
The utility model provides a pair of glass sintering electric connector for with aluminum alloy mounting panel welded seal fixed connection, glass sintering electric connector is arbitrary foretell glass sintering electric connector, the mounting hole has been seted up on the mounting panel, the mounting hole suit is in the shell outer lane, shell and mounting panel welded seal are fixed, welding position between metal base and the shell and the welding position between shell and the mounting panel are located the both ends of shell respectively, the mounting panel, the shell, the gradient such as coefficient of thermal expansion of metal base steadilys decrease, form the transition, realize welded connection between sintering type connector shell and the aluminum alloy, effectively avoid leading to welding thermal stress too big because of the coefficient of expansion difference is great between the welding part, welding stress has been reduced, glass fracture has been avoided, sealing performance has been guaranteed, satisfy and equip the lightweight, energy-conserving development demand.
Preferably, the inner ring at the tail of the shell is welded and fixed with the metal base, the outer ring at the head of the shell is provided with a boss, a step hole matched with the boss is formed in the opening of the mounting hole, the outer ring of the boss is welded and fixed with the inner ring of the step hole, two parts of the shell are welded and located at two ends of a part, and the stress borne by the glass is further reduced, the glass is protected, and the reliability is improved through the welding stress of the structural strength consumption part of the shell and the mounting plate. The outer ring of the head of the shell and the mounting plate are welded, sealed and fixed through tin-lead solder or tin-silver-copper solder, the welding temperature is 260 ℃, the temperature is lower than the welding temperature of eutectic gold-tin solder, the temperature of the welding position of the shell and the metal base is lower due to the heat dissipation effect of the shell, the influence of the subsequent welding process on the previous welding process is avoided, and the air tightness is guaranteed.
The beneficial effects of the utility model reside in that:
compared with the prior art, the glass sintering assembly is connected by welding the materials with two-stage thermal expansion coefficients and the like which are gradually decreased in gradient, welding stress is dispersed, the thermal stress of the glass in the welding process is reduced, the glass is effectively protected, glass cracking is avoided, airtight sealing between the materials with large thermal expansion coefficient difference and the glass sintering assembly is realized, meanwhile, the welding materials with gradually decreased welding temperature are selected, the influence of the subsequent welding process on the previous welding process is avoided, further, the glass sintering electric connector is welded on the aluminum alloy mounting plate, airtightness is ensured, and the development requirements of light weight and energy conservation of equipment are met.
Drawings
FIG. 1 is a schematic view of the structure of the glass sintered electrical connector of the present invention welded to the housing of a T/R module;
FIG. 2 is a cross-sectional view of a glass frit electrical connector according to the present invention;
fig. 3 is a schematic structural diagram of the housing of the present invention;
fig. 4 is a schematic structural diagram of the metal base of the present invention.
In the figure: the structure comprises a 1-mounting plate, a 2-housing, a 3-metal base, a 4-contact element, a 5-sealing gasket, 6-eutectic gold-tin solder, a 21-lug boss, a 22-limiting ring platform and a 31-limiting step.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1 to 4, a glass sintering electric connector comprises a shell 2, a metal base 3 and a contact element 4, wherein the shell 2 is sleeved on the outer ring of the metal base 3, the metal base 3 is fixedly connected with the shell 2 in a welding sealing manner, the metal base 3 is fixedly connected with the contact element 4 in a glass sintering sealing manner, the thermal expansion coefficients of the shell 2 and the metal base 3 are gradually decreased to form transition, the phenomenon that welding thermal stress is too large due to large difference of the thermal expansion coefficients between welding parts is effectively avoided, the welding stress is reduced, glass cracking is avoided, and the sealing performance is ensured.
The shell 2 is made of copper or copper alloy, the metal base 3 is made of low-carbon steel, and the thermal expansion coefficient is reduced progressively.
The thermal expansion coefficients of the metal base 3 and the contact element 4 are matched, so that the glass sintering quality is ensured.
The contact element 4 is made of low-carbon steel and is matched with the metal base 3 in thermal expansion coefficient, so that the glass sintering quality is ensured, and the sealing performance and the reliability are further ensured.
The inner ring at the tail part of the shell 2 is fixedly welded with the metal base 3, and the outer ring at the head part of the shell 2 is provided with a boss 21, so that the positioning and the installation are convenient.
As shown in fig. 2, the outer surfaces of the metal base 3 and the shell 2 are plated with gold, and the metal base 3 and the shell 2 are welded, sealed and fixedly connected through eutectic gold-tin solder 6, and are welded with the gold layer at 300 ℃ without soldering flux, so that the glass and the contact 4 are prevented from being polluted by organic solvent, and the electrical performance is ensured.
The salt fog resistance of the low-carbon steel material is poor, in order to improve the salt fog performance of the product, the metal base 3 is provided with the sealing gasket 5 on the butt joint end face, as shown in fig. 2, the sealing gasket 5 wraps the root position of the contact element 4 extending out of the glass, the electric connector compresses the sealing gasket 5 after butt joint, so that the metal base 3 is isolated from the outside, and the salt fog is prevented from corroding the bottom of the metal base 3 and the root of the contact element 4.
As shown in fig. 2 and 4, the metal base 3 is provided with a plurality of through holes, the contact element 4 penetrates through the through holes, two ends of the contact element 4 extend out of the through holes, and the contact element 4 and the through holes are fixedly connected through glass sintering.
The utility model provides a pair of glass sintering electric connector for with 1 welded seal fixed connection of aluminum alloy mounting panel, glass sintering electric connector is arbitrary foretell glass sintering electric connector, has seted up the mounting hole on the mounting panel 1, and the mounting hole suit is in 2 outer lanes of shell, and shell 2 and 1 welded seal of mounting panel are fixed, and the welded position between metal base 3 and the shell 2 and the welded position between shell 2 and the mounting panel 1 are located the both ends of shell 2 respectively, and mounting panel 1, shell 2, metal base 3's gradients such as coefficient of thermal expansion steadily decrease.
In this embodiment, the mounting plate 1 is a T/R assembly housing made of aluminum alloy and having a thermal expansion coefficient of about 23 × 10-6The shell 2 is made of copper or copper alloy, and the thermal expansion coefficient is about 17 multiplied by 10-6V. DEG C, thermal expansion coefficient with aluminum alloyThe materials of the inner layer metal base 3 are all low carbon steel, and the thermal expansion coefficient is about 11 multiplied by 10-6The temperature per DEG C is matched with the material of the outer shell 2, the thermal expansion coefficients of the mounting plate 1, the shell 2 and the metal base 3 form equal gradient degression, the difference of the thermal expansion coefficients in the prior art is improved, the matching performance is enhanced, the welding position between the mounting plate 1 and the shell 2 and the welding position between the shell 2 and the metal base 3 are enabled to be more uniform in stress distribution, a short strength plate is avoided, transition is formed, the welding connection between the sintering connector shell and the aluminum alloy is realized, the phenomenon that the welding thermal stress is overlarge due to the large difference of the expansion coefficients between welding parts is effectively avoided, the welding stress is reduced, glass cracking is avoided, the sealing performance is ensured, and the development requirements of light weight and energy conservation of equipment are met.
As shown in fig. 2 to 4, the inner ring of the shell 2 is provided with a limit ring platform 22, the head of the metal base 3 is provided with a convex limit step 31, the tail of the metal base 3 passes through the limit ring platform 22, and the inner ring of the tail of the shell 2 is welded and fixed with the metal base 3, so that the limit step 31 abuts against the limit ring platform 22; the outer ring of the head of the shell 2 is provided with a boss 21, the opening part of the mounting hole is provided with a step hole matched with the boss 21, the outer ring of the boss 21 is fixedly welded with the inner ring of the step hole, two parts of the shell 2 are welded at two ends of a part, and the stress borne by glass is further reduced, the glass is protected, and the reliability is improved through the welding stress of the structural strength consumption part of the shell and the mounting plate 1. The outer ring of the head of the shell 2 and the mounting plate are welded, sealed and fixed through tin-lead solder or tin-silver-copper solder, the welding temperature is 260 ℃, the temperature is lower than the eutectic gold-tin solder welding temperature, the temperature of the welding position of the shell and the metal base is lower due to the heat dissipation effect of the shell, the influence of the subsequent welding process on the previous welding process is avoided, and the air tightness is guaranteed.
The utility model provides a pair of glass sintering electric connector, weld and connect glass sintering closed piece through setting up the degressive material welding of gradients such as two-stage thermal expansion coefficient, dispersion welding stress, the thermal stress that glass received in the welding process has been reduced, effective protection glass, avoid the glass fracture, airtight sealing between the great material of thermal expansion coefficient difference and the glass sintering closed piece has been realized, choose the degressive solder of welding temperature for use simultaneously, avoid the next welding process to produce the influence to the previous welding process, and then realized welding glass sintering electric connector on the aluminum alloy mounting panel, guarantee the air tightness, satisfy and equip the lightweight, energy-conserving development demand.
Claims (9)
1. A glass frit electrical connector, comprising: the heat-insulation glass tube comprises a shell (2), a metal base (3) and a contact element (4), wherein the shell (2) is sleeved on the outer ring of the metal base (3), the metal base (3) is fixedly connected with the shell (2) in a welding and sealing mode, the metal base (3) is fixedly connected with the contact element (4) in a glass sintering and sealing mode, and the thermal expansion coefficients of the shell (2) and the metal base (3) are gradually decreased.
2. A glass frit electrical connector as in claim 1 wherein: the shell (2) is made of copper or copper alloy, and the metal base (3) is made of low-carbon steel.
3. A glass frit electrical connector as in claim 1 wherein: the metal base (3) is matched with the contact piece (4) in thermal expansion coefficient.
4. A glass frit electrical connector as in claim 1 or 3 wherein: the contact piece (4) is made of low-carbon steel.
5. A glass frit electrical connector as in claim 1 wherein: the inner ring of the tail part of the shell (2) is welded and fixed with the metal base (3), and the outer ring of the head part of the shell (2) is provided with a boss (21).
6. The glass frit electrical connector as claimed in claim 1 or 5, wherein: the outer surfaces of the metal base (3) and the outer shell (2) are plated with gold, and the metal base (3) and the outer shell (2) are welded, sealed and fixedly connected through eutectic gold-tin solder (6).
7. A glass frit electrical connector as in claim 1 wherein: and a sealing gasket (5) is arranged on the butt joint end face of the metal base (3).
8. A glass frit electrical connector as in claim 1 wherein: the metal base (3) is provided with a plurality of through holes, the contact element (4) penetrates through the through holes, two ends of the contact element (4) extend out of the through holes, and the contact element (4) is fixedly connected with the through holes through glass sintering.
9. The utility model provides a glass sintering electric connector for with aluminum alloy mounting panel (1) welding seal fixed connection, its characterized in that: the glass sintering electric connector is as claimed in any one of claims 1 to 8, a mounting hole is formed in the mounting plate (1), the mounting hole is sleeved on the outer ring of the shell (2), the shell (2) and the mounting plate (1) are welded, sealed and fixed, the welding position between the metal base (3) and the shell (2) and the welding position between the shell (2) and the mounting plate (1) are respectively located at two ends of the shell (2), and the thermal expansion coefficients of the mounting plate (1), the shell (2) and the metal base (3) are gradually decreased in an equal gradient manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120727567.4U CN214378976U (en) | 2021-04-09 | 2021-04-09 | Glass sintering electric connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120727567.4U CN214378976U (en) | 2021-04-09 | 2021-04-09 | Glass sintering electric connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214378976U true CN214378976U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120727567.4U Active CN214378976U (en) | 2021-04-09 | 2021-04-09 | Glass sintering electric connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214378976U (en) |
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2021
- 2021-04-09 CN CN202120727567.4U patent/CN214378976U/en active Active
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