A tube shell assembly electrical performance nondestructive testing device

Abstract

This invention discloses a non-destructive testing device for the electrical performance of tubular and shell assemblies, belonging to the technical field of electrical performance testing for tubular and shell assemblies. The device includes a button-type testing module and a PCB (Printed Circuit Board). The button-type testing module is used to achieve a non-destructive, solderless electrical connection between the PCB and the tubular and shell assembly. The PCB is provided with pads for testing the electrical performance of the tubular and shell assembly. By achieving a non-destructive, solderless electrical connection between the PCB and the tubular and shell assembly through the button-type testing module, compared to the existing technology of welding the two ends of a wire to the ceramic insulator and ceramic substrate of a ceramic insulator assembly to achieve an electrical connection between the ceramic insulator and the ceramic substrate, the wire and welding process are eliminated, achieving non-destructive electrical performance testing of the tubular and shell assembly and significantly improving the testing efficiency. This solves the problems of high welding difficulty, difficult wire routing, non-non-destructive testing, and low electrical performance testing efficiency in existing technologies.

Description

Technical Field

[0001] This invention relates to a non-destructive testing device for the electrical performance of tubular and shell-type components, belonging to the technical field of electrical performance testing for tubular and shell-type components. Background Technology

[0002] Sintered tube assemblies, due to their high airtightness, excellent electrical insulation and thermal stability, high temperature resistance, high voltage resistance, and high mechanical strength, are widely used in optical communication, image sensors, wireless power devices, microwave / RF devices, and high-end chip packaging. As various equipment increasingly moves towards smaller size, higher density, and more multifunctionality, the trend towards miniaturization, lightweighting, and integration of sintered tube assemblies is becoming increasingly apparent. Achieving rapid, accurate, and non-destructive testing of the electrical properties of sintered tube assemblies, such as insulation resistance and dielectric withstand voltage, after sintering has become one of the bottlenecks restricting the large-scale, batch, and modular production of sintered tube assemblies.

[0003] In the conventional field of electrical performance testing and screening of sintered ceramic tube assemblies, welding is typically used to achieve electrical connections. For example, Chinese Patent CN116206830A discloses a ceramic insulator assembly and its preparation method for electrical performance testing of ceramic tube assemblies. This ceramic insulator assembly includes a ceramic insulator, a lead wire, and a ceramic substrate. The ceramic insulator serves as the insulating component of the ceramic tube assemblies, through which the ceramic tube assemblies achieve electrical connections with the outside world. One end of the lead wire is connected to the ceramic insulator, and the other end is connected to the ceramic substrate, thus establishing an electrical connection between the ceramic insulator and the ceramic substrate. The upper surface of the ceramic substrate has metal test points, and the electrical performance of the ceramic tube assemblies is tested by applying power to these metal test points using an electrical device. This ceramic insulator assembly improves the simplicity and accuracy of electrical performance testing for ceramic tube assemblies to a certain extent.

[0004] However, the conductors in the aforementioned ceramic insulator assemblies need to be welded to the ceramic insulator and the ceramic substrate to achieve electrical connection between them. When the tube shell assembly under test has many contacts, there are drawbacks such as high welding difficulty, difficult wiring, non-non-destructive testing, and low efficiency of electrical performance testing. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a non-destructive testing device for the electrical performance of tubular and shell assemblies.

[0006] This invention is achieved through the following technical solution: A non-destructive testing device for the electrical performance of a tube-shell assembly includes a button testing module and a PCB printed circuit board. The button testing module is used to achieve a non-destructive, solderless electrical connection between the PCB printed circuit board and the tube-shell assembly. The PCB printed circuit board is provided with pads for testing the electrical performance of the tube-shell assembly.

[0007] The button testing module includes a metal fixing plate, an insulating base assembly, and multiple button electrical contact assemblies. The metal fixing plate has an installation slot, the insulating base assembly is located in the installation slot, and multiple stepped holes are arranged side by side and through the insulating base assembly. The multiple button electrical contact assemblies are movably installed inside the multiple stepped holes one by one.

[0008] One end of the button electrical contact assembly extends outside the insulating base assembly for non-destructive, solderless electrical contact with the pads on the PCB printed circuit board, and the other end is located inside the stepped hole for non-destructive, solderless electrical contact with the pins inserted into the stepped hole on the housing assembly.

[0009] The stepped hole includes a pin receiving hole section and a button mounting hole section arranged coaxially. One end of the button mounting hole section is connected to one end of the pin receiving hole section, and the diameter of the button mounting hole section is larger than the diameter of the pin receiving hole section. A ball-head protective cap limiting step is provided on the inner side of the end of the button mounting hole section away from the pin receiving hole section.

[0010] The pin receiving hole section has a pin limiting step at one end near the button mounting hole section, and the inner diameter of the pin limiting step is not greater than the diameter of the pin. The pin receiving hole section has a trumpet-shaped guide hole at one end away from the button mounting hole section to guide the pin into the pin receiving hole section.

[0011] The button electrical contact assembly includes a flat-head protective cap, a button contact, and a ball-head protective cap. The button contact is disposed within the button mounting hole section and is clearance-fitted with the button mounting hole section. One end of the button contact abuts against the flat-head protective cap, and the other end abuts against the ball-head protective cap. Both the flat-head and ball-head protective caps are slidably connected to the button mounting hole section. The flat-head protective cap extends into the pin receiving hole section and is axially limited by the end face of the button mounting hole section near the pin receiving hole section. The ball-head protective cap extends outside the insulating base assembly and is axially limited by the ball-head protective cap limiting step.

[0012] The two end faces of the insulating base assembly correspond one-to-one with the two end faces of the metal fixing plate, including insulating base A and insulating base B. Insulating base A is installed and fixed in the mounting through groove by a number of fasteners B. One end of insulating base B is limited by insulating base A, and the other end is limited by base steps provided in the mounting through groove. The pin receiving hole is formed on the insulating base A, and part of the button mounting hole is formed on the insulating base A, while the other part is formed on the insulating base B.

[0013] The button testing module is equipped with two anti-misinsertion positioning guide posts for positioning the button testing module relative to the PCB printed circuit board. The button test module is provided with a clearance slot to avoid the heat dissipation module on the tube shell assembly.

[0014] The button test module is detachably connected to the tube housing assembly via several fasteners C.

[0015] The button testing module is detachably connected to the PCB printed circuit board via several fasteners A.

[0016] The beneficial effects of this invention are as follows: 1. The button test module enables non-destructive, solderless electrical connection between the PCB and the housing assembly. Compared with the existing technology that welds the two ends of the wire to the ceramic insulator and the ceramic substrate in the ceramic insulator assembly to achieve electrical connection between the ceramic insulator and the ceramic substrate, this eliminates the wire and welding process, realizes non-destructive electrical performance testing of the housing assembly, and significantly improves the efficiency of electrical performance testing of the housing assembly. It solves the problems of high welding difficulty, difficult wiring, non-non-destructive testing, and low electrical performance testing efficiency of the existing technology.

[0017] 2. The present invention has a simple structure and mature processing technology. It can be applied to application scenarios such as electrical performance screening of tube and shell components after sintering. It has the advantages of low cost, detachability, reusability, floating welding-free contact and non-destructive testing.

[0018] 3. A pin limiting step is provided at one end of the pin receiving hole section near the button mounting hole section, and the inner diameter of the pin limiting step is not greater than the diameter of the pin. The pin limiting step limits the maximum depth of the pin inserted into the pin receiving hole section, thereby preventing the pin from being excessively inserted into the button mounting hole section and thus preventing the button contact from being excessively compressed and collapsing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 This is a partially enlarged view of the button testing module of the present invention after it is assembled with the PCB printed circuit board; Figure 4 This is a partially enlarged view of the fabric button testing module and the housing assembly after assembly. Figure 5This is a schematic diagram of the structure of the housing assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the button testing module of the present invention.

[0020] In the diagram: 1-Shell assembly, 11-Pin, 12-Heat dissipation module, 13-Through hole A, 2-Fastener A, 3-PCB printed circuit board, 4-Button test module, 41-Metal fixing plate, 411-Mounting through slot, 412-Base step, 42-Insulating base assembly, 421-Insulating base A, 422-Insulating base B, 423-Stepped hole, 424-Pin receiving hole section, 425-Button mounting hole section, 426-Ball head protective cap limiting step, 427-Pin limiting step, 428-Flare guide hole, 43-Button electrical contact assembly, 431-Flat head protective cap, 432-Button contact, 433-Ball head protective cap, 44-Fastener B, 45-Anti-misinsertion positioning guide post, 46-Allowing through slot, 5-Fastener C. Detailed Implementation

[0021] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0022] like Figures 1 to 6 As shown, the non-destructive testing device for the electrical performance of a tube and shell assembly according to the present invention includes a button testing module 4 and a PCB printed circuit board 3. The button testing module 4 is used to realize a non-destructive, solderless electrical connection between the PCB printed circuit board 3 and the tube and shell assembly 1. The PCB printed circuit board 3 is provided with pads, which are used to realize the electrical performance testing of the tube and shell assembly 1.

[0023] Specifically, the button test module 4 enables a non-destructive, solderless electrical connection between the PCB printed circuit board 3 and the housing assembly 1. Compared with the existing technology that welds the two ends of the wire to the ceramic insulator and the ceramic substrate in the ceramic insulator assembly respectively to achieve an electrical connection between the ceramic insulator and the ceramic substrate, this eliminates the wire and welding process, realizes non-destructive electrical performance testing of the housing assembly 1, and significantly improves the electrical performance testing efficiency of the housing assembly 1. It solves the problems of high welding difficulty, difficult wiring, non-non-destructive testing, and low electrical performance testing efficiency in the existing technology.

[0024] By applying power to the pads on the PCB printed circuit board 3 using external equipment, the electrical performance of the housing assembly 1 can be tested quickly and non-destructively.

[0025] The button testing module 4 includes a metal fixing plate 41, an insulating base assembly 42, and multiple button electrical contact assemblies 43. The metal fixing plate 41 has an installation slot 411, the insulating base assembly 42 is located in the installation slot 411, and multiple stepped holes 423 are arranged side by side and penetrating on the insulating base assembly 42. The multiple button electrical contact assemblies 43 are movably arranged one-to-one inside the multiple stepped holes 423.

[0026] One end of the button electrical contact assembly 43 extends outside the insulating base assembly 42 for non-destructive, solderless electrical contact with the pads on the PCB printed circuit board 3, and the other end is located inside the stepped hole 423 for non-destructive, solderless electrical contact with the pins 11 inserted into the stepped hole 423 on the tube housing assembly 1.

[0027] The stepped hole 423 includes a pin receiving hole section 424 and a button mounting hole section 425 arranged coaxially. One end of the button mounting hole section 425 is connected to one end of the pin receiving hole section 424, and the diameter of the button mounting hole section 425 is larger than the diameter of the pin receiving hole section 424. A ball-head protective cap limiting step 426 is provided on the inner side of the end of the button mounting hole section 425 away from the pin receiving hole section 424.

[0028] Specifically, the diameter of the button mounting hole section 425 is larger than the diameter of the pin receiving hole section 424, so as to form a stepped surface at the junction of the button mounting hole section 425 and the pin receiving hole section 424, thereby axially limiting the flat-head protective cap 431 through this stepped surface. The ball-head protective cap limiting step 426 axially limits the ball-head protective cap 433.

[0029] The pin receiving hole section 424 has a pin limiting step 427 at one end near the button mounting hole section 425, and the inner diameter of the pin limiting step 427 is not greater than the diameter of the pin 11. The pin receiving hole section 424 has a trumpet-shaped guide hole 428 at one end away from the button mounting hole section 425 for guiding the pin 11 into the pin receiving hole section 424.

[0030] Specifically, a pin limiting step 427 is provided at one end of the pin receiving hole section 424 near the button mounting hole section 425, and the inner diameter of the pin limiting step 427 is not greater than the diameter of the pin 11. The pin limiting step 427 limits the maximum depth of the pin 11 inserted into the pin receiving hole section 424, thereby preventing the pin 11 from being over-inserted into the button mounting hole section 425 and thus preventing the button contact 432 from being over-compressed and collapsing.

[0031] A flared guide hole 428 is provided at one end of the pin receiving hole section 424 away from the button mounting hole section 425 to guide the pin 11 to be smoothly inserted into the pin receiving hole section 424. This ensures that the pin 11 can still be properly inserted into the pin receiving hole section 424 even when there is a small radial movement, while also preventing damage or scratches to the pin 11 during the insertion process.

[0032] The button electrical contact assembly 43 includes a flat-head protective cap 431, a button contact 432, and a ball-head protective cap 433. The button contact 432 is disposed within the button mounting hole section 425 and is clearance-fitted with the button mounting hole section 425. One end of the button contact 432 abuts against the flat-head protective cap 431, and the other end abuts against the ball-head protective cap 433. Both the flat-head protective cap 431 and the ball-head protective cap 433 are slidably connected to the button mounting hole section 425. The flat-head protective cap 431 extends partially into the pin receiving hole section 424 and is axially limited by the end face of the button mounting hole section 425 near the pin receiving hole section 424. The ball-head protective cap 433 extends partially outside the insulating base assembly 42 and is axially limited by the ball-head protective cap limiting step 426.

[0033] Specifically, during the process of installing and fixing the button test module 4 onto the housing assembly 1 using multiple fasteners C5, and installing and fixing the PCB printed circuit board 3 onto the button test module 4 using multiple fasteners A2, the pin 11 pushes the flat-head protective cap 431 and the PCB printed circuit board 3 pushes the ball-head protective cap 433 towards each other, causing the button contact 432 to elastically deform and shorten. At the same time, the button contact 432 reacts to the flat-head protective cap 431 and the ball-head protective cap 433, causing them to move away from each other, thereby ensuring that the button electrical contact assembly 43 maintains a non-destructive, solderless, and reliable electrical connection with the pin 11 and the pads on the PCB printed circuit board 3.

[0034] The button contact 432 and the button mounting hole section 425 are clearance-fitted, which provides space for the button contact 432 to undergo elastic deformation under external pressure, and avoids excessive increase in friction between the button contact 432 and the hole wall of the button mounting hole section 425 after axial compression.

[0035] The two end faces of the insulating base assembly 42 are coplanar with the two end faces of the metal fixing plate 41, and include insulating base A421 and insulating base B422. The insulating base A421 is installed and fixed in the mounting through groove 411 by a plurality of fasteners B44. One end of the insulating base B422 is limited by the insulating base A421, and the other end is limited by the base step 412 provided in the mounting through groove 411. The pin receiving hole section 424 is formed on the insulating base A421, and the button mounting hole section 425 is partly formed on the insulating base A421 and partly formed on the insulating base B422.

[0036] Specifically, fastener B44 is a screw, and multiple countersunk holes are provided on the insulating base A421 at positions corresponding to the multiple fasteners B44. Multiple threaded holes C are provided on the metal fixing plate 41 at positions corresponding to the multiple fasteners B44. After the fasteners B44 pass through the countersunk holes, they connect with the threaded holes C on the metal fixing plate 41. Tightening the fasteners B44 will install and fix the insulating base A421 into the mounting slot 411 of the metal fixing plate 41.

[0037] The insulating base assembly 42 is divided into an insulating base A421 and an insulating base B422. The pin receiving hole section 424 is formed on the insulating base A421, and the button mounting hole section 425 is partially formed on the insulating base A421 and partially formed on the insulating base B422, so as to facilitate the assembly of the button electrical contact assembly 43 into the stepped hole 423.

[0038] The button testing module 4 is equipped with two anti-misinsertion positioning guide posts 45 for positioning the button testing module 4 and the PCB printed board 3. The button test module 4 is provided with a clearance slot 46 for avoiding the heat dissipation module 12 on the tube shell assembly 1.

[0039] Specifically, two anti-misalignment positioning guide posts 45 are provided on the metal fixing plate 41, and two positioning holes are provided on the PCB printed circuit board 3 at positions corresponding to the two anti-misalignment positioning guide posts 45. When connecting the button test module 4 and the PCB printed circuit board 3, the two anti-misalignment positioning guide posts 45 are inserted into the two positioning holes to achieve the functions of preventing misalignment and guiding positioning between the button test module 4 and the PCB printed circuit board 3. An avoidance through slot 46 is provided on the button test module 4 to avoid the heat dissipation module 12 on the tube shell assembly 1.

[0040] The button test module 4 is detachably connected to the housing assembly 1 via multiple fasteners C5.

[0041] Specifically, the fastener C5 is a screw. The tube housing assembly 1 has multiple through holes A13 at positions corresponding to the multiple fasteners C5. The metal fixing plate 41 has multiple threaded holes A at positions corresponding to the multiple fasteners C5. One end of the fastener C5 passes through the through hole A13 on the tube housing assembly 1 and connects to the threaded hole A on the metal fixing plate 41. Tightening the fastener C5 will install and fix the tube housing assembly 1 onto the button test module 4, and enable the button electrical contact assembly 43 to achieve a non-destructive, solderless electrical connection with the pins 11 of the tube housing assembly 1.

[0042] The button testing module 4 is detachably connected to the PCB printed circuit board 3 via multiple fasteners A2.

[0043] Specifically, fastener A2 is a screw. The PCB printed circuit board 3 has multiple through holes B at positions corresponding to the fasteners A2. The metal fixing plate 41 has multiple threaded holes B at positions corresponding to the fasteners A2. One end of the fastener A2 passes through the through hole B on the PCB printed circuit board 3 and connects to the threaded hole B on the metal fixing plate 41. Tightening the fastener A2 will install and fix the PCB printed circuit board 3 onto the button test module 4, and enable the button electrical contact assembly 43 to achieve a non-destructive, solderless electrical connection with the pads on the PCB printed circuit board 3.

Claims

1. A non-destructive testing device for the electrical performance of a tubular assembly, characterized in that: It includes a button testing module (4) and a PCB (3). The button testing module (4) is used to realize a non-destructive, solderless electrical connection between the PCB (3) and the housing assembly (1). The PCB (3) is provided with pads, which are used to realize the electrical performance testing of the housing assembly (1).

2. The non-destructive testing device for the electrical performance of tubular and shell assemblies as described in claim 1, characterized in that: The button test module (4) includes a metal fixing plate (41), an insulating base assembly (42), and multiple button electrical contact assemblies (43). The metal fixing plate (41) has an installation slot (411), the insulating base assembly (42) is located in the installation slot (411), and multiple stepped holes (423) are arranged side by side and through the insulating base assembly (42). The multiple button electrical contact assemblies (43) are movably arranged one-to-one inside the multiple stepped holes (423).

3. The non-destructive testing device for the electrical performance of tubular and shell assemblies as described in claim 2, characterized in that: One end of the button electrical contact assembly (43) extends outside the insulating base assembly (42) for non-destructive, solderless electrical contact with the pads on the PCB printed circuit board (3), and the other end is located inside the stepped hole (423) for non-destructive, solderless electrical contact with the pins (11) inserted into the stepped hole (423) on the housing assembly (1).

4. The non-destructive testing device for the electrical performance of tubular and shell assemblies as described in claim 3, characterized in that: The stepped hole (423) includes a pin receiving hole section (424) and a button mounting hole section (425) arranged coaxially. One end of the button mounting hole section (425) is connected to one end of the pin receiving hole section (424), and the diameter of the button mounting hole section (425) is larger than the diameter of the pin receiving hole section (424). A ball head protective cap limiting step (426) is provided on the inner side of the end of the button mounting hole section (425) away from the pin receiving hole section (424).

5. The non-destructive testing device for the electrical performance of tubular and shell assemblies as described in claim 4, characterized in that: The pin receiving hole section (424) has a pin limiting step (427) at one end near the button mounting hole section (425), and the inner diameter of the pin limiting step (427) is not greater than the diameter of the pin (11). The pin receiving hole section (424) has a trumpet-shaped guide hole (428) at one end away from the button mounting hole section (425) for guiding the pin (11) to be inserted into the pin receiving hole section (424).

6. The non-destructive testing device for the electrical performance of tubular and shell assemblies as described in claim 4, characterized in that: The button electrical contact assembly (43) includes a flat-top protective cap (431), a button contact (432), and a ball-head protective cap (433). The button contact (432) is disposed within the button mounting hole section (425) and is clearance-fitted with the button mounting hole section (425). One end of the button contact (432) abuts against the flat-top protective cap (431), and the other end abuts against the ball-head protective cap (433). The flat-top protective cap (431) Both the ball head protective cap (433) and the button mounting hole section (425) are slidably connected. The flat head protective cap (431) extends into the pin receiving hole section (424) and is axially limited by the end face of the button mounting hole section (425) near the pin receiving hole section (424). The ball head protective cap (433) extends outside the insulating base assembly (42) and is axially limited by the ball head protective cap limiting step (426).

7. The non-destructive testing device for the electrical performance of tubular and shell assemblies as described in claim 4, characterized in that: The two end faces of the insulating base assembly (42) are coplanar with the two end faces of the metal fixing plate (41), including insulating base A (421) and insulating base B (422). Insulating base A (421) is installed and fixed in the mounting through groove (411) by a number of fasteners B (44). One end of insulating base B (422) is limited by insulating base A (421), and the other end is limited by base step (412) provided in the mounting through groove (411). The pin receiving hole section (424) is opened on the insulating base A (421), and the button mounting hole section (425) is partially opened on the insulating base A (421) and partially opened on the insulating base B (422).

8. The non-destructive testing device for the electrical performance of tubular and shell assemblies as described in claim 1, characterized in that: The button test module (4) is provided with two anti-misinsertion positioning guide posts (45) for positioning the button test module (4) and the PCB printed board (3) relative to each other. The button test module (4) is provided with a clearance slot (46) for the heat dissipation module (12) of the tube shell assembly (1) to avoid the tube shell assembly (1).

9. The non-destructive testing device for the electrical performance of tubular and shell assemblies as described in claim 1, characterized in that: The button test module (4) is detachably connected to the housing assembly (1) via several fasteners C (5).

10. The non-destructive testing device for the electrical performance of tubular and shell assemblies as described in claim 1, characterized in that: The button test module (4) is detachably connected to the PCB printed circuit board (3) via several fasteners A (2).

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