CN219552520U

CN219552520U - Test probe

Info

Publication number: CN219552520U
Application number: CN202222972901.XU
Authority: CN
Inventors: 尹绪引; 胡宁伟; 吕银涛; 黄颗
Original assignee: Shenzhen Electric Connector Technology Co Ltd
Current assignee: Shenzhen Electric Connector Technology Co Ltd
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-08-18
Anticipated expiration: 2032-11-08

Abstract

The utility model discloses a test probe, which is characterized in that the probe is sleeved in a first insulator and a second insulator in a penetrating manner, the first insulator is sleeved in a main body inner shell, the second insulator is sleeved in an outer conductor, the main body inner shell is movably connected with the outer conductor, a spring body can be freely and telescopically arranged on the outer surface of the lower part of the main body inner shell and the upper joint part of the outer conductor, a main body outer shell is sleeved on the outer side of the spring body, the upper end and the lower end of the main body outer shell are respectively connected with the upper part of the main body inner shell and the upper part of the outer conductor, the outer conductor comprises a main shaft and an elastic joint part penetrating through the main shaft, the main shaft part is positioned in the main body outer shell, and the bottom end of the main body inner shell is spliced in the elastic joint part. Compared with the prior art, realizes: under the condition that the opposite socket of the opposite coaxial switch test seat has larger position deviation, the test probe can still deflect to perform high-stability test; meanwhile, after the test is completed, the deflected probe can automatically return to the center origin position.

Description

Test probe

Technical Field

The utility model relates to the technical field of electric connectors, in particular to a test probe.

Background

In the process of conducting and testing the radio frequency circuit in the mobile communication and consumer electronic product industry, the radio frequency test probes and the corresponding switch test seats need to be in butt joint with the upper and lower coaxial centers so as to obtain stable and reliable test results.

With the advent of fifth generation communication technology, more and more electronic devices of hardware devices begin to adopt the structural design of a multi-layer motherboard, so that the position accuracy of an SMT device on a PCBA is not as high as that of a single-layer motherboard, and manufacturers need to patch a MINI RF device by SMT after the motherboard is stacked, and at this time, the offset of the MINI RF device after the patch is increased due to the multi-layer motherboard stacking process.

The movable range of the outer conductor of the existing test probe structure, which can deflect, is mainly determined by the direct clearance among the outer conductor, the outer shell and the inner main body of the outer conductor, if the direct clearance among the outer conductor, the outer shell and the inner main body is reduced, the deflection amount of the outer conductor is reduced, and if the direct clearance among the outer conductor, the outer conductor cannot return to the center origin in a natural state, namely the test probe of the structure cannot simultaneously meet the requirements of large-angle deviation correction and automatic return to the center origin without external force.

Therefore, there is an urgent need in the market for a test probe that can solve the above-mentioned technical problems.

Disclosure of Invention

The embodiment of the utility model provides a test probe, which realizes the following steps: under the condition that the opposite socket of the opposite coaxial switch test seat has larger position deviation, the test probe can still deflect to perform high-stability test; meanwhile, after the test is completed, the deflected probe can automatically return to the center origin position.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

a test probe comprises a main body inner shell, a first insulator, a probe with an integrated structure, a main body outer shell, a spring body, a second insulator and an outer conductor, wherein,

the probe through-hole suit in first insulator with in the second insulator, first insulator suit in the main part inner shell, the second insulator suit in the outer conductor, the main part inner shell with outer conductor swing joint, the spring body can freely telescopic set up in the lower part of main part inner shell with the surface of the upper portion joint portion of outer conductor, the main part outer shell cover is located the outside of spring body just the upper end of main part outer shell and lower extreme respectively with the upper portion of main part inner shell with the upper portion of outer conductor is connected, the outer conductor includes main shaft and the elasticity joint portion that link up with it, main shaft part is located the main part outer shell inside, and part is located the main part outer shell outside, the bottom of main part inner shell is pegged graft in the elasticity joint portion.

Preferably, the elastic joint part is in an annular structure, a plurality of split grooves are arranged at intervals in the circumferential direction of the annular structure, and the split grooves divide the elastic joint part into a plurality of elastic sheets.

Preferably, a circumferential limit convex part is arranged at the inner side of the lower end of the main body shell, a clamping and hanging part is arranged at the top end of the main shaft, and the clamping and hanging part is matched with the limit convex part to prevent the outer conductor from being separated from the main body shell from the lower end of the main body shell.

Preferably, the limiting protrusion is provided with a first inclined portion, a second inclined portion is arranged below the clamping and hanging portion, and under the action of no external force, the first inclined portion and the second inclined portion are in fit contact to enable the main body shell and the outer conductor to be kept coaxial and vertical.

Preferably, the hollow part of the main shaft forms a probe channel for the probe to penetrate, and the bottom end of the probe channel is also provided with a guide groove.

Preferably, a stop structure is arranged at the bottom of the main body inner shell, and the stop structure is used for being matched with the first insulator to prevent the limit part on the probe from being separated from the main body inner shell from the lower part of the main body inner shell.

Preferably, the inner wall of the upper end of the main body outer shell is provided with an inner thread concavely arranged, and the outer wall of the upper part of the main body inner shell is convexly provided with an outer thread matched with the inner thread.

Preferably, the test probe further comprises a flange fixing piece, the upper portion of the main body inner shell is connected with the flange fixing piece in a riveting mode, an abutting portion is arranged at the top end of the main body inner shell, and the outer surface of the abutting portion is of a square structure.

The utility model has the beneficial effects that: the outer conductor comprises a main shaft and an elastic joint part communicated with the main shaft, the main shaft is positioned in the main body outer shell, the main shaft is partially positioned outside the main body outer shell, the bottom end of the main body inner shell is inserted into the elastic joint part, so that the test probe can still deflect to perform high-stability test under the condition of larger position deviation of the inserted coaxial switch test seat from the inserted port, namely, the test probe has good capability of correcting larger angle deviation; meanwhile, after the test is completed, the deflected probe can automatically return to the center origin position.

Drawings

FIG. 1 is a perspective view of an embodiment of the present utility model;

FIG. 2 is an exploded view of an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of an embodiment of the present utility model;

fig. 4 is an enlarged schematic view of the partial view S in fig. 3;

FIG. 5 is a schematic perspective view of an outer conductor according to an embodiment of the present utility model;

fig. 6 is a schematic perspective view of the inner shell of the main body according to the embodiment of the present utility model.

Reference numerals in the drawings of the specification include:

the test probe comprises a test probe 100, a main body inner shell 110, a stop structure 111, an external thread 112, an abutting part 113, a first insulator 120, a probe 130, a limiting part 131, a main body outer shell 140, a limiting convex part 141, a first inclined part 141A, an internal thread 142, a spring body 150, a second insulator 160, an outer conductor 170, a main shaft 171, a clamping part 171A, a second inclined part 171B, a probe channel 171C, a guide groove 171D, an elastic joint part 172, a split groove 172A, an elastic piece 172B, a flange fixing part 180 and a third insulator 190.

Detailed Description

The embodiment of the utility model solves the technical problem that the test probe structure in the prior art cannot simultaneously meet the requirements of large-angle deviation correction and automatic center origin return under the action of no external force by providing the test probe.

The technical scheme in the embodiment of the utility model aims to solve the technical problems, and the overall thought is as follows:

the probe is sleeved in the first insulator and the second insulator in a penetrating manner, the first insulator is sleeved in the main body inner shell, the second insulator is sleeved in the outer conductor, the main body inner shell is movably connected with the outer conductor, the spring body is arranged on the outer surface of the lower part of the main body inner shell and the upper joint part of the outer conductor in a freely telescopic manner, the main body outer shell is sleeved on the outer side of the spring body, the upper end and the lower end of the main body outer shell are respectively connected with the upper part of the main body inner shell and the upper part of the outer conductor, the outer conductor comprises a main shaft and an elastic joint part penetrating through the main shaft, the main shaft part is positioned in the main body outer shell, the main shaft part is partially positioned outside the main body outer shell, the bottom end of the main body inner shell is spliced in the elastic joint part, and the test probe can still deflect to perform high-stability test under the condition of large position deviation from a butt joint of the inserted coaxial switch test seat; meanwhile, after the test is completed, the deflected probe can automatically return to the center origin position.

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.

As shown in fig. 1 to 6, an embodiment of the present utility model is:

a test probe 100 includes a main body inner case 110, a first insulator 120, a probe 130 of an integrated structure, a main body outer case 140, a spring body-150, a second insulator-160, and an outer conductor-170, wherein,

the probe 130 is sleeved in the first insulator 120 and the second insulator 160 in a penetrating manner, the first insulator 120 is sleeved in the main body inner shell 110, the second insulator 160 is sleeved in the outer conductor 170, the main body inner shell 110 is movably connected with the outer conductor 170, the spring body 150 is freely and telescopically arranged on the outer surface of the lower portion of the main body inner shell 110 and the upper portion joint portion of the outer conductor 170, the main body outer shell 140 is sleeved on the outer side of the spring body 150, the upper end and the lower end of the main body outer shell 140 are respectively connected with the upper portion of the main body inner shell 110 and the upper portion of the outer conductor 170, the outer conductor 170 comprises a main shaft 171 and an elastic joint portion 172 penetrating through the main shaft 171, the main shaft 171 is partially positioned inside the main body outer shell 140, the main body inner shell 110 is partially positioned outside the main body outer shell 140, and the bottom end of the main body inner shell 110 is spliced in the elastic joint portion 172. Referring to fig. 5 with emphasis, the elastic joint portion 172 has an annular structure, a plurality of split grooves 172A are provided at intervals in the circumferential direction of the annular structure, and the split grooves 172A divide the elastic joint portion 172 into a plurality of elastic pieces 172B.

The split groove 172A may be formed by cutting with a saw blade, and then subjected to a heat treatment process, so that the plurality of elastic pieces 172B formed by dividing have good elasticity. When the outer conductor 170 and the coaxial switch test socket are tested, the upper end of the outer conductor will deflect, at this time, at least one of the plurality of elastic pieces 172B can always keep full contact with the lower end of the main body inner shell 110, so as to ensure the stability of signals, and the outer conductor 170 can be quickly moved downwards to return to the original position after the test is finished.

Preferably, referring to fig. 4 with emphasis, a circumferential limit protrusion 141 is provided on the inner side of the lower end of the main body housing 140, a clamping portion 171A is provided on the top end of the main shaft 171, and the clamping portion 171A cooperates with the limit protrusion 141 to prevent the outer conductor 170 from coming out of the main body housing 140 from the lower end of the main body housing 140.

More specifically, the first inclined portion 141A is disposed on the limit protrusion 141, and the second inclined portion 171B is disposed below the hooking portion 171A, and the first inclined portion 171A and the second inclined portion 172B are in contact with each other under no external force, so that the main body housing 140 and the outer conductor 170 are kept coaxially perpendicular. It should be noted that, when the outer conductor 170 is inserted into the coaxial switch testing socket, the outer conductor 170 moves upward, at this time, the first inclined portion 171A and the second inclined portion 172B are separated, a gap is formed between the outer conductor 170 and the main body housing 140, so that the front end of the outer conductor 170 may have a larger offset, and when the test probe 100 is out of contact with the coaxial switch testing socket, the outer conductor 170 moves downward under the action of the spring body 150 and returns to the position where the first inclined portion 171A and the second inclined portion 172B are in mating contact. That is, the test probe 100 can always ensure automatic coaxial perpendicularity between the main body case 140 and the outer conductor 170 in a natural state.

Referring to fig. 3, the inner wall of the upper end of the main body outer case 140 is provided with female screw threads 142 concavely provided, and the outer wall of the upper portion of the main body inner case 110 is convexly provided with male screw threads 112 matched with the female screw threads 142. It will be appreciated that the threaded connection may provide for a more stable, secure connection between the main body outer housing 140 and the main body inner housing 110.

Preferably, the hollow portion of the main shaft 171 forms a probe channel 171C through which the probe passes, and a guide groove 171D is further provided at the bottom end of the probe channel 171C.

Preferably, referring again to fig. 4, a stopper 111 is provided at the bottom of the main body inner case 110, and the stopper 111 is used to cooperate with the first insulator 120 to prevent the stopper 171E on the probe 130 from being separated from the main body inner case 110 from the lower portion of the main body inner case 110. The stopper 111 can fix the first insulator 120 to the bottom of the body inner case 110, so that the probe 130 can be effectively fixed to the first insulator 120, and the probe 130 is elongated and has a certain flexibility, so that when the front end of the outer conductor 170 is deflected, the probe 130 can be deflected together with the front end of the outer conductor.

Preferably, the test probe 100 further includes a flange fixing member 180, the upper portion of the main body inner housing 110 is in riveted connection with the flange fixing member 180, and referring to fig. 6, an abutting portion 113 is disposed at the top end of the main body inner housing 110, and an outer surface of the abutting portion 113 has a square structure. In this embodiment, the main body inner shell 110 is riveted on the flange fixing member 180 through a punching process, and the main body outer shell 140 and the main body inner shell 110 are connected through threads, so that in the actual assembly process, after the main body outer shell 140 and the main body inner shell 110 are installed through threads, the main body inner shell 110 can be fastened through a fixture clamping square structure, and therefore loosening of the riveting connection part between the upper part of the main body inner shell 110 and the flange fixing member 180 can be prevented.

The process assembly process of the present utility model is described in detail as follows:

(1) Pressing the flange fixing member 180 and the third insulator 190 together;

(2) One end of the probe 130 is inserted into the inner housing 110 through the first insulator 120, the other end of the probe 130 is inserted through the third insulator 190, and the flange fixing members 180 at both ends of the probe 130 and the inner housing 110 are press-coupled together by a press-coupling jig to fix.

(3) The second insulator 160 and the outer conductor 170 are riveted together.

(4) The spring body 150 is installed on the main body inner shell 110 by penetrating the probe 130, the main body outer shell 140 is sleeved outside the outer conductor 170, the probe 130 is penetrated through the second insulator 160 in the middle of the outer conductor 170, and finally the whole test probe product is fixedly locked by the matched threads of the main body outer shell 140 and the main body inner shell 110.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples merely illustrate embodiments of the utility model and are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A test probe comprises a main body inner shell, a first insulator, a probe with an integrated structure, a main body outer shell, a spring body, a second insulator and an outer conductor, wherein,

the probe through-hole suit in first insulator with in the second insulator, first insulator suit in the main part inner shell, the second insulator suit in the outer conductor, the main part inner shell with outer conductor swing joint, the spring body freely telescopic set up in the lower part of main part inner shell with the surface of the upper portion joint portion of outer conductor, the main part outer shell cover is located the outside of spring body just upper end and the lower extreme of main part outer shell respectively with the upper portion of main part inner shell and the upper portion of outer conductor are connected, its characterized in that, the outer conductor includes main shaft and the elasticity joint portion that link up with it, main shaft part is located the main part outer shell is inside, part is located the main part outer shell outside, the bottom of main part inner shell is pegged graft in the elasticity joint portion.

2. The test probe of claim 1, wherein the resilient engagement portion has an annular structure, and a plurality of split grooves are provided at intervals in a circumferential direction of the annular structure, the split grooves dividing the resilient engagement portion into a plurality of resilient pieces.

3. The test probe of claim 2, wherein an annular limit protrusion is provided on the inner side of the lower end of the main body housing, and a clamping and hanging portion is provided on the top end of the main shaft, and the clamping and hanging portion cooperates with the limit protrusion to prevent the outer conductor from being separated from the main body housing from the lower end of the main body housing.

4. The test probe of claim 3, wherein the limit protrusion is provided with a first inclined portion, a second inclined portion is provided below the clamping portion, and the first inclined portion and the second inclined portion are in contact with each other under no external force, so that the main body housing and the outer conductor are kept coaxially and vertically.

5. The test probe of claim 1, wherein the hollow portion of the spindle forms a probe channel through which the probe passes, and a guide groove is further provided at a bottom end of the probe channel.

6. The test probe of claim 1, wherein a stop structure is provided at the bottom of the main body inner housing for cooperating with the first insulator to prevent a stopper on the probe from being pulled out of the main body inner housing from the lower portion of the main body inner housing.

7. The test probe of claim 1, wherein the upper inner wall of the main body outer housing is provided with female threads concavely arranged, and the upper outer wall of the main body inner housing is convexly provided with male threads matched with the female threads.

8. The test probe of claim 7, further comprising a flange fixing member, wherein the upper portion of the main body inner housing is in rivet connection with the flange fixing member, an abutting portion is disposed at the top end of the main body inner housing, and an outer surface of the abutting portion is in a tetragonal structure.