CN213210236U

CN213210236U - Sleeve type anti-deformation test probe

Info

Publication number: CN213210236U
Application number: CN202020837643.2U
Authority: CN
Inventors: 张小英; 申啸; 李红叶
Original assignee: Weinan Hi Tech Zone Wood King Technology Co Ltd
Current assignee: Weinan Muwang Intelligent Technology Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-05-14
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses a bushing type shape test probe of preapring for an unfavorable turn of events, include: a needle tube, said needle tube comprising a bent closed end; a needle shaft, wherein the needle shaft is arranged in the needle tube, and the head of the needle shaft extends out of the nozzle of the needle tube; the spring is arranged in the needle tube, and two ends of the spring are respectively pressed against the bottom of the closed end and the tail of the needle shaft; and the outer wall of the sleeve is provided with a concave point for clamping the closed end, and a lead is arranged in the sleeve. The sleeve type deformation-preventing test probe solves the problem that when a small-sized test probe and a sleeve are fixed by processing a plurality of concave points, the test probe is easy to deform.

Description

Sleeve type anti-deformation test probe

Technical Field

The utility model belongs to the technical field of electronic components, especially, relate to a bushing type shape test probe of preapring for an unfavorable turn of events.

Background

The test probe with the needle sleeve mainly comprises the test probe and the sleeve. Wherein: the test probe is generally composed of a needle shaft, a spring and a needle tube, and the needle shaft, the spring and the needle tube are fixed into a whole after precision riveting processing, namely the test probe; the cable conductor has been welded to sheathed tube one end, and inside the sleeve pipe was arranged in to the test probe, because the sleeve pipe is fixed in the backup pad during the use, so change inconvenient, generally only change inside test probe.

According to the production experience of the inventor, the outer part of the sleeve is often fixed inside the sleeve by processing a plurality of concave points, but when the test probe and the sleeve are fixed by processing a plurality of concave points, the following defects exist: for the test probe with larger outer diameter, the fixing mode can not influence the test probe, however, for the test probe with smaller outer diameter, the test probe is easy to deform, the test probe is damaged, and the test probe is clamped in the sleeve pipe in serious conditions and is difficult to replace.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bushing type shape test probe of preapring for an unfavorable turn of events to when solving smaller-size test probe and sleeve pipe and fixing through processing a plurality of concave points, make the test probe take place the problem of deformation easily.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a telescopic deformation prevention test probe, comprising:

a needle tube, said needle tube comprising a bent closed end;

a needle shaft, wherein the needle shaft is arranged in the needle tube, and the head of the needle shaft extends out of the nozzle of the needle tube;

the spring is arranged in the needle tube, and two ends of the spring are respectively pressed against the bottom of the closed end and the tail of the needle shaft;

and the outer wall of the sleeve is provided with a concave point for clamping the closed end, and a lead is arranged in the sleeve.

The technical scheme of the utility model, still have following characteristics:

the tail of the needle shaft is provided with a conical surface, and one end of the spring is sleeved on the conical surface.

The needle shaft is characterized in that an annular groove is formed in the outer wall of the tail of the needle shaft, and a concave point is arranged outside the needle tube and is located in the annular groove.

The bottom of the closed end is an arc-shaped surface.

An annular step is arranged outside the sleeve.

The utility model has the advantages that: the utility model discloses a sleeve type shape test probe of preapring for an unfavorable turn of events, its principle is the needle tubing of packing into with spring, needle axle earlier, later makes the blind end of needle tubing take place certain buckling, later packs into the blind end from sheathed tube one end, along with deepening of blind end, the blind end begins to straighten gradually, can produce the pretightning force between needle tubing and the sleeve pipe simultaneously and press from both sides the test probe tightly, has avoided leading to the problem that the test probe warp through processing a plurality of concave points easily.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic structural view of the assembled casing anti-deformation test probe of the present invention;

FIG. 2 is a schematic view of the uncased configuration of FIG. 1;

fig. 3 is a schematic view of the structure of the bushing of fig. 1.

In the figure: 1. the needle comprises a needle shaft, 2 annular steps, 3 needle tubes, 4 concave points, 5 sleeves, 6 leads, 7 arc-shaped surfaces, 8 closed ends and 9 springs.

Detailed Description

The following embodiments will be described in detail with reference to the accompanying drawings, so that how to implement the technical means of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.

As shown in fig. 1 and 2, the sleeve-type anti-deformation testing probe of the present invention comprises the following components:

a needle tube 3, the needle tube 3 including a bent closed end 8;

a needle shaft 1, the needle shaft 1 is arranged in the needle tube 3, and the head of the needle shaft 1 extends out of the tube opening of the needle tube 3;

a spring 9, the spring 9 is arranged in the needle tube 3, and two ends of the spring 9 are respectively pressed against the bottom of the closed end 8 and the tail part of the needle shaft 1.

A sleeve 5, a concave point 4 for clamping a closed end 8 is arranged on the outer wall of the sleeve 5, and a lead 6 is arranged in the sleeve 5.

As shown in fig. 2, the spring 9 and the needle shaft 1 are assembled into the needle tube 3 to form a test probe, and then a tool is used to process the closed end 8 of the needle tube 3 into a certain bending angle, and then the closed end 8 is assembled from one end of the sleeve 5.

Because the internal diameter of sleeve pipe 5 is greater than 3 external diameters of needle tubing, has great clearance during the design between the two, along with the continuous deepening of blind end 8, blind end 8 begins to become straight gradually, and meanwhile can produce the pretightning force between needle tubing 3 and the sleeve pipe 5 and press from both sides the test probe tightly to solved and leaded to the problem that the test probe warp easily through processing a plurality of concave points 4, protected the test probe, also made things convenient for its follow-up change.

Under normal conditions, signals such as current and the like are input into a tested device, if the influence of the device after the signals are input is required to be measured, the signals can be sent out from a tester, are transmitted to a test probe and a sleeve through a cable, then reach the tested device by moving a needle shaft 1 to a welding point to be tested, and finally return to the test instrument along the original path.

As shown in fig. 2, in the sleeve-type anti-deformation testing probe of the present invention, the tail of the needle shaft 1 is provided with a tapered surface, and a sleeve of the spring 9 is disposed on the tapered surface.

The tail part of the needle shaft 1 is designed into a conical surface, so that after one end of the spring 9 is sleeved on the conical surface, along with the compression of the spring 9, the elastic force generated by the spring 9 can be more uniformly applied to the needle shaft 1, and the stable test operation of the needle shaft is ensured.

As shown in fig. 2, in the casing tube type anti-deformation testing probe of the present invention, an annular groove is provided on the outer wall of the tail portion of the needle shaft 1, a concave point 4 is provided on the outside of the needle tube 3, and the concave point 4 is located in the annular groove.

After the spring 9 and the needle shaft 1 are arranged in the needle tube 3, the assembly of the test probe can be ensured to be completed quickly by processing a plurality of concave points 4 on the outer wall of the tail part of the needle shaft 1, and the concave points 4 are positioned in the annular groove, so that the needle shaft 1 can be elastically contracted to a certain extent after contacting with a tested object.

As shown in fig. 3, in the utility model discloses an among the bushing type shape test probe of preapring for an unfavorable turn of events, the bottom of blind end 8 is arcwall face 7, can ensure that blind end 8 and sleeve pipe 5 are located the inside maximum area's that concave point 4 goes out contact, ensures the transmission that test signal can be smooth.

As shown in fig. 3, in the sleeve-type anti-deformation testing probe of the present invention, an annular step 2 is disposed outside the sleeve 5.

The sleeve 5 can be fixed on the test board through the annular step 2, so that the test is convenient.

While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive of other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed above, or as otherwise known in the relevant art. But variations and modifications which do not depart from the spirit and scope of the invention should be construed as being included in the scope of the appended claims.

Claims

1. A bushing type deformation prevention test probe, comprising:

a needle tube (3), said needle tube (3) comprising a bent closed end (8);

the needle shaft (1) is arranged in the needle tube (3), and the head of the needle shaft (1) extends out of the nozzle of the needle tube (3);

the spring (9) is arranged in the needle tube (3), and two ends of the spring (9) are respectively pressed against the bottom of the closed end (8) and the tail of the needle shaft (1);

the outer wall of the sleeve (5) is provided with a concave point (4) for clamping the closed end (8), and a lead (6) is arranged in the sleeve (5).

2. The telescopic anti-deformation test probe according to claim 1, wherein the tail of the needle shaft (1) is provided with a tapered surface, and one end of the spring (9) is sleeved on the tapered surface.

3. The telescopic anti-deformation test probe according to claim 1, wherein an annular groove is formed on the outer wall of the tail part of the needle shaft (1), and a concave point (4) is formed on the outer part of the needle tube (3), wherein the concave point (4) is positioned in the annular groove.

4. The telescopic deformation prevention test probe according to claim 1, wherein the bottom of the closed end (8) is an arc-shaped face (7).

5. The telescopic deformation prevention test probe according to claim 1, wherein the sleeve (5) is externally provided with an annular step (2).