CN111293454A

CN111293454A - Transmission line testing device

Info

Publication number: CN111293454A
Application number: CN202010135945.XA
Authority: CN
Inventors: 何家勇; 詹大伟; 陈飞飞; 陈勇利
Original assignee: Ruisheng Precision Manufacturing Technology Changzhou Co Ltd
Current assignee: Ruisheng Precision Manufacturing Technology Changzhou Co Ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-06-16
Anticipated expiration: 2040-03-02
Also published as: WO2021174590A1; CN111293454B

Abstract

The invention provides a transmission line testing device, which is used for testing a transmission line and comprises a probe assembly and a floating support assembly; the floating support assembly is used for supporting the transmission line, and the probe assembly is used for being electrically connected with the transmission line; the floating support assembly comprises a base with an accommodating cavity, a positioning block arranged in the accommodating cavity, and an elastic piece connected between the base and the positioning block, wherein the accommodating cavity comprises an opening communicated with the outside of the base. According to the transmission line testing device provided by the invention, the floating support component can support the transmission line to be tested to translate or rotate in 6 degrees of freedom, so that the testing work can be continued even if the probe component and the initial position of the transmission line to be tested deviate, and the probe component and the transmission line to be tested can be accurately and stably abutted.

Description

Transmission line testing device

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of testing devices, in particular to a transmission line testing device.

[ background of the invention ]

With the development of 5G and consumer electronics technologies, the multi-antenna technology has been studied for a long time. The space available for the layout of the traditional radio frequency coaxial transmission line is smaller and smaller, so that a novel transmission line structure (comprising an FPC and a connector) is produced.

Aiming at the design of a multi-antenna radio frequency transmission line, a flexible material circuit (comprising a connector) is mainly adopted for radio frequency transmission, and the superiority of the radio frequency transmission performance plays an important role.

Testing the radio frequency performance of transmission lines becomes an important item in the mass production test link of transmission lines. A stable, reliable and accurate test fixture can be fine measure transmission line radio frequency performance, and test fixture also satisfies the demand of producing the line batch test, possesses characteristics such as easily operation, long service life.

As the connectors used become more miniaturized, the positional alignment accuracy of the test probes and connectors on the test fixture becomes more and more demanding, and it becomes very difficult to use conventional alignment methods.

Therefore, a transmission line testing apparatus that facilitates alignment of a test probe with a connector during testing is needed.

[ summary of the invention ]

The present invention provides a transmission line testing device to solve the problem that the conventional alignment method is very difficult due to the miniaturization of the connector, the requirement for the alignment accuracy between the test probe and the connector of the test fixture, and the like.

The technical scheme of the invention is as follows: the invention aims to provide a transmission line testing device, which is used for testing a transmission line and comprises a probe assembly and a floating support assembly; the floating support assembly is used for supporting the transmission line, and the probe assembly is used for being electrically connected with the transmission line;

the floating support assembly comprises a base with an accommodating cavity, a positioning block installed in the accommodating cavity and an elastic piece connected between the base and the positioning block, the accommodating cavity comprises an opening communicated with the outside of the base, the positioning block comprises an installation seat located at the opening and used for accommodating a transmission line, and the positioning block can enable the installation seat to translate or rotate at the opening under the support of the elastic piece.

Furthermore, the positioning block further comprises a body part supporting the mounting seat and a wing part extending outwards from the circumferential direction of the body part, the elastic part is sleeved on the periphery of the body part, one end of the elastic part is abutted to the base, and the other end of the elastic part is abutted to the wing part.

Furthermore, the base is provided with a limiting block at the opening, and the limiting block is matched with the wing part to limit the positioning block to be ejected out of the accommodating cavity.

Furthermore, one side of the wing part close to the opening is provided with an inclined surface, and the limiting block is provided with an inclined surface which is in profile fit with the inclined surface of the wing part.

Furthermore, the wing part is in a quadrangular frustum pyramid shape or a circular truncated cone shape, and the limiting block is matched with the wing part in a profiling mode.

Furthermore, the mount pad is including being annular fender wall and by the mounting groove that the fender wall encloses, the tip of fender wall is equipped with the spigot surface.

Furthermore, the blocking wall is provided with at least one notch for avoiding the transmission line.

Further, the base comprises a base with the containing cavity and a cover plate covering one side, far away from the opening, of the base, and the elastic piece is abutted to the cover plate.

Furthermore, the cover plate is provided with an accommodating groove for accommodating the elastic piece, and one end of the elastic piece, which is abutted against the cover plate, is accommodated in the accommodating groove.

Further, the cover plate comprises a covering part abutted to the base and a protruding part extending from the covering part to the accommodating cavity, and at least part of the accommodating groove is formed in the protruding part.

The invention has the beneficial effects that:

the floating support component can support the transmission line to be tested in a translation or rotation mode in 6 degrees of freedom, so that even if the probe component deviates from the initial position of the transmission line to be tested, the test can be continued, and the probe component can be accurately and stably abutted against the transmission line to be tested.

[ description of the drawings ]

Fig. 1 is an exploded view of a transmission line testing apparatus according to an embodiment of the present invention;

FIG. 2 is a perspective view of a transmission line to be tested;

FIG. 3 is an exploded view of a probe assembly of the transmission line testing apparatus according to one embodiment of the present invention;

FIG. 4 is an exploded view of a floating support assembly of the transmission line testing apparatus according to one embodiment of the present invention;

fig. 5 is a cross-sectional view of the transmission line testing apparatus according to an embodiment of the present invention, in a testing state, mated with a transmission line;

fig. 6 is an enlarged schematic view of a point a in fig. 5.

In the figure: 10. a probe assembly; 11. a body; 12. a substrate; 13. a radio frequency adapter; 14. a groove; 15. a probe; 16. a guide mechanism; 20. a transmission line; 21. a substrate; 22. a connector; 221. a signal terminal; 30. a floating support assembly; 31. a base; 311. a base; 3111. an opening; 312. a limiting block; 32. positioning blocks; 321. a mounting seat; 3211. a retaining wall; 3212. a guide surface; 3213. a notch; 322. a wing portion; 323. a body portion; 324. mounting grooves; 33. an elastic member; 34. an accommodating cavity; 35. a cover plate; 351. accommodating grooves; 352. a covering part; 353. a boss portion; 36. a fastener.

[ detailed description ] embodiments

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1-2, an embodiment of the invention provides a transmission line testing apparatus for testing a transmission line 20. The transmission line testing apparatus includes a probe assembly 10 for connecting with an external testing instrument and a floating support assembly 30 for supporting a transmission line 20 to be tested; during testing, the transmission line 20 to be tested is firstly installed on the floating support assembly 30, then the probe assembly 10 moves and approaches to the floating support assembly 30 until the probe assembly 10 is abutted against the transmission line 20 to be tested, and when the probe assembly 10 and the floating support assembly 30 are matched in place, the two are electrically connected, so that the testing is completed. It is understood that, in practical applications, the probe assembly 10 and the floating support assembly 30 may be fixedly integrated into a test fixture, and the test fixture drives the probe assembly 10 and the floating support assembly 30 to move and align.

Referring to fig. 2, the transmission line 20 includes a base 21 and a connector 22 mounted on the base 21, and the connector 22 includes a plurality of signal terminals 221.

Referring specifically to fig. 3, the probe assembly 10 includes a first assembly portion and a second assembly portion that are secured to each other. The first assembly part includes a substrate 12, a circuit structure (not shown) disposed in the substrate 12, and a radio frequency adapter 13 mounted on the substrate 12 and connected to the circuit structure, wherein the radio frequency adapter 13 is used for connecting with an external test instrument. The second assembly part comprises a body 11 and a plurality of probes 15 mounted on the body 11, the body 11 is fixed with the substrate 12, and the probes 15 penetrate through the body 11 and have two ends exposed on the body 11. During testing, one end of the probe 15 abuts against the circuit structure on the substrate 12, and the other end abuts against the signal terminal 221 of the connector 22, so that transmission of radio frequency signals from the transmission line 20 to an external testing instrument is realized.

Referring to fig. 5-6, the second assembly further includes a ring-shaped guide mechanism 16 protruding from one side of the body 11 and a groove 14 defined by the guide mechanism 16. The guide mechanism 16 is used to guide the connector 22 to be tested into the recess 14 during testing. In an embodiment, the portion of the inner side surface of the guiding mechanism 16 away from the body 11 is an inclined surface, and when the probe assembly 10 is aligned with the connector 22 of the transmission line 20 to be tested, the inner side surface of the guiding mechanism 16 slowly pushes the connector 22 into the groove 14 after contacting the connector 22.

Referring to fig. 1, 4 and 5, the floating support assembly 30 includes a base 31 having a receiving cavity 34, a positioning block 32 installed in the receiving cavity 34, and an elastic member 33 connected between the base 31 and the positioning block 32, the receiving cavity 34 has an opening 3111 communicating with the outside of the base 31, the positioning block 32 has a mounting seat 321 located at the opening 3111, and the mounting seat 321 is used for receiving the connector 22 of the transmission line 20 to be tested. During testing, when the probe assembly 10 is aligned with the connector 22 mounted on the mounting seat 321, the connector 22 or the mounting seat 321 receives a force from the probe assembly 10, and the elastic member 33 is pressed. After the elastic member 33 is pressed, the positioning block 32 can be supported to translate or rotate in the receiving cavity 34 in 6 degrees of freedom (3 translational degrees of freedom along X/Y/Z and 3 rotational degrees of freedom around X/Y/Z, which are 6 degrees of freedom in total), so that the probes 15 of the test probe assembly 10 can be precisely pressed against the signal terminals 221 of the connector 22. After the test is completed, the restoring force generated by the deformation of the elastic member 33 is used to restore the positioning block 32.

Referring to fig. 4 again, the positioning block 32 further includes a main body 323 supporting the mounting seat 321 and a wing 322 extending outward from the circumferential direction of the main body 323, the elastic member 33 is sleeved on the outer circumference of the main body 323, one end of the elastic member 33 abuts against the base 31, and the other end of the elastic member 33 abuts against the wing 322; the base 31 is provided with a stop block 312 at the opening 3111, and the stop block 312 cooperates with the wing 322 to limit the positioning block 32 from being ejected from the receiving cavity 34.

Preferably, one side of the wing 322 close to the opening 3111 has an inclined surface, and the stopper 312 has an inclined surface which is in contour fit with the inclined surface 3221 of the wing 322; the wing portions 322 are in a quadrangular frustum pyramid shape or a circular frustum cone shape, and the limiting block 312 is matched with the wing portions 322 in a profiling way.

Referring to fig. 4 again, the mounting seat 321 includes an annular blocking wall 3211 and a mounting groove 324 surrounded by the blocking wall 3211, and a guide surface 3212 is disposed at an end of the blocking wall 3211; specifically, the blocking wall 3211 is provided with at least one notch 3213 for avoiding the transmission line 20.

Specifically, the base 31 includes a base 311 having the receiving cavity 34 and a cover plate 35 covering a side of the base 311 away from the opening 3111, and the elastic member 33 abuts against the cover plate 35.

More specifically, the cover plate 35 is mounted in the housing cavity 34 and fixedly connected to the base 311 by a fastening member 36, a housing groove 351 for housing the elastic member 33 is formed in the cover plate 35, and one end of the elastic member 33 abutting against the cover plate 35 is housed in the housing groove 351; specifically, the cover plate 35 includes a covering portion 352 abutting against the base 311 and a protrusion 353 extending from the covering portion 352 to the housing cavity 34, and at least a part of the housing groove 351 is provided in the protrusion 353.

It should be noted that all the directional indicators (such as upper, lower, inner, outer, top, bottom … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims

1. A transmission line testing device is used for testing a transmission line and is characterized by comprising a probe assembly and a floating support assembly; the floating support assembly is used for supporting the transmission line, and the probe assembly is used for being electrically connected with the transmission line;

2. The transmission line testing apparatus of claim 1, wherein: the positioning block further comprises a body part supporting the mounting seat and a wing part extending outwards from the circumferential direction of the body part, the elastic part is sleeved on the periphery of the body part, one end of the elastic part is abutted to the base, and the other end of the elastic part is abutted to the wing part.

3. The transmission line testing apparatus of claim 2, wherein: the base is provided with a limiting block at the opening, and the limiting block is matched with the wing part and used for limiting the positioning block to pop out of the accommodating cavity.

4. The transmission line testing apparatus of claim 3, wherein: one side of the wing part, which is close to the opening, is provided with an inclined surface, and the limiting block is provided with an inclined surface which is in profile fit with the inclined surface of the wing part.

5. The transmission line testing apparatus of claim 3, wherein: the wing part is in a quadrangular frustum pyramid shape or a circular truncated cone shape, and the limiting block is matched with the wing part in a profiling mode.

6. The transmission line testing apparatus of claim 3, wherein: the mount pad is including being annular fender wall and by the mounting groove that fender wall encloses, the tip that keeps off the wall is equipped with the spigot surface.

7. The transmission line testing apparatus of claim 6, wherein: the blocking wall is at least provided with a notch for avoiding the transmission line.

8. The transmission line testing apparatus of claim 2, wherein: the base comprises a base with the containing cavity and a cover plate covering one side, far away from the opening, of the base, and the elastic piece is abutted to the cover plate.

9. The transmission line testing apparatus of claim 8, wherein: the cover plate is provided with a containing groove for containing the elastic piece, and one end of the elastic piece, which is abutted against the cover plate, is contained in the containing groove.

10. The transmission line testing apparatus of claim 9, wherein: the apron include with the portion of closing of base butt and certainly the portion of closing is closed to the portion of closing the bellying of acceping the chamber extension, at least part the holding tank set up in the bellying.