CN212321686U

CN212321686U - Double-end low-impedance probe

Info

Publication number: CN212321686U
Application number: CN202020494075.0U
Authority: CN
Inventors: 费保兴
Original assignee: Taicang Bitaike Automation Equipment Co ltd
Current assignee: Taicang Bitaike Automation Equipment Co ltd
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2021-01-08
Anticipated expiration: 2030-04-07

Abstract

The utility model discloses a probe of low impedance of double-end, it includes: the needle tube is provided with a first retaining ring and a second retaining ring at two ends respectively, and a first spring and the like are arranged in the needle tube; the probe comprises a probe rod and a sawtooth surface, the probe rod is positioned between the sawtooth surface and the steel ball, and one end of the probe extends into the needle tube; the detection head comprises a contact column and the like, the contact column is positioned in the needle tube, and the contact column, the detection rod, the needle head and the round head are fixed together in sequence. The utility model discloses a contact such as sawtooth surface and pin, lead wire, the contact surface of sawtooth surface is greater than exploring the claw and be less than the elliptical head, can provide suitable area of contact and be fit for a pin or lead wire etc. like this, can not damage pin, lead wire etc. guarantees that the electric current that passes through is stable, has improved the accuracy and the one-time test percent of pass of test.

Description

Double-end low-impedance probe

Technical Field

The utility model relates to a probe especially relates to a probe of low impedance of double-end.

Background

The probe of prior art comprises the body, spring and probe, the spring dress is in the body, the other end of probe is arranged in the body and is pressed on the spring, the other end stretches out the body outside through the roof pressure of this spring, pin when probe test circuit board, lead wire etc., the probe is pressed through probe and body inner wall and spring contact, electric connection is realized to probe flow direction body and spring to the current meeting follow, the spring is because only one and length is longer, long-time compression or a lot of reciprocating motion, make the spring fatigue very easily and lose elasticity, cause this probe to become invalid. In addition, the existing probe adopts a probe claw or an elliptical head, and the probe claw is sharp and is easy to damage a pin or a lead wire and the like; the width of the elliptical head is large, namely the contact surface is too large, and the elliptical head is easily contacted with a plurality of pins or leads, so that the test is inaccurate.

SUMMERY OF THE UTILITY MODEL

To the above situation, in order to overcome the defects of the prior art, the utility model provides a probe with double-end and low impedance.

The utility model discloses a solve above-mentioned technical problem through following technical scheme: a double-ended low impedance probe, comprising:

the needle tube is provided with a first retaining ring and a second retaining ring at two ends respectively, a first spring, a second spring, a spring seat, a first sliding rod, a second sliding rod and a steel ball are arranged in the needle tube, the first sliding rod and the second sliding rod are fixed with two ends of the spring seat respectively, one end of the first spring is sleeved on the first sliding rod and is abutted against the spring seat, one end of the second spring is sleeved on the second sliding rod and is abutted against the spring seat, and the steel ball is abutted against the other end of the second spring;

the probe comprises a probe rod and a sawtooth surface, the probe rod is positioned between the sawtooth surface and the steel ball, and one end of the probe extends into the needle tube;

the detection head comprises a contact column, a detection rod, a needle head and a round head, the contact column is positioned in the needle tube, and the contact column, the detection rod, the needle head and the round head are fixed together in sequence.

Preferably, the outer side of the needle tube is provided with a raised ring.

Preferably, the outer side of the needle tube is provided with a positioning groove.

Preferably, one end of the probe rod is provided with a convex block.

Preferably, one end surface of the bump is an inclined surface.

The utility model discloses an actively advance the effect and lie in:

the sawtooth surface is in contact with the pins, the leads and the like, the contact surface of the sawtooth surface is larger than the probe claw and smaller than the elliptical head, so that a proper contact area can be provided, the sawtooth surface is suitable for one pin or one lead and the like, the pins, the leads and the like cannot be damaged, the stability of passing current is guaranteed, and the accuracy and the one-time test passing rate of the test are improved.

The first spring and the second spring respectively guarantee the elasticity and the pre-pressure of the probe and the detection head when in use, the length of the first spring and the length of the second spring are both shorter than the length of the existing spring, the first spring and the second spring do not fatigue and lose elasticity after long-time compression or repeated reciprocating motion, the service life is prolonged, and the spring seat increases the stability of the first spring and the stability of the second spring.

And the first sliding rod and the second sliding rod respectively keep the first spring and the second spring to vertically move up and down, so that the first spring and the second spring are prevented from being damaged due to friction with the inner wall of the needle tube.

Drawings

Fig. 1 is the structure schematic diagram of the probe with double-ended low impedance of the present invention.

Detailed Description

The following provides a preferred embodiment of the present invention with reference to the accompanying drawings to explain the technical solutions of the present invention in detail.

As shown in FIG. 1, the utility model discloses probe of low impedance of double-end includes:

the needle tube comprises a needle tube 1, wherein a first retainer ring 11 and a second retainer ring 12 are respectively arranged at two ends of the needle tube 1, a first spring 13, a second spring 14, a spring seat 15, a first sliding rod 16, a second sliding rod 17 and a steel ball 18 are arranged in the needle tube 1, the first sliding rod 16 and the second sliding rod 17 are respectively fixed with two ends of the spring seat 15, one end of the first spring 13 is sleeved on the first sliding rod 16 and is abutted against the spring seat 15, one end of the second spring 14 is sleeved on the second sliding rod 17 and is abutted against the spring seat 15, and the steel ball 18 is abutted against the other end of the second spring 14;

the probe comprises a probe rod 21 and a sawtooth surface 22, the probe rod 21 is positioned between the sawtooth surface 22 and the steel ball 18, and one end of the probe extends into the needle tube 1;

the detection head comprises a contact column 31, a detection rod 32, a needle head 33 and a round head 34, wherein the contact column 31 is positioned in the needle tube 1, and the contact column 31, the detection rod 32, the needle head 33 and the round head 34 are fixed together in sequence.

The outer side of the needle tube 1 is provided with a raised ring 19 which is convenient for a clamping hand of a detection mechanism to clamp or position.

The outer side of the needle tube 1 is provided with a positioning groove 20 for positioning conveniently.

One end of the probe rod 21 is provided with a convex block 23, and the convex block 23 is matched with the second retainer ring 12 to prevent the probe rod 21 from completely moving out of the needle tube 1, namely, prevent the probe from being separated from the needle tube 1.

One end face of the convex block 23 is an inclined face, and the inclined face is matched with the steel ball 18 to ensure that the probe is stably contacted with the needle tube 1, so that the current transmission between the probe and the needle tube 1 is stable.

The working principle of the utility model is as follows: the utility model discloses a needle tubing 1, first retaining ring 11, second retaining ring 12, first spring 13, second spring 14, spring holder 15, first slide bar 16, second slide bar 17, steel ball 18, protruding circle 19, positioning groove 20, probe rod 21, sawtooth surface 22, protruding piece 23, contact column 31, detection bar 32, syringe needle 33, parts such as button head 34 are general standard or the part that technical staff in the field knows, its structure and principle all are parts that this technical staff all can learn through the technical manual or learn through conventional experimental method. When the test device is used, the sawtooth surface 22 is in contact with pins, leads and the like, the contact surface of the sawtooth surface is larger than the probe claw and smaller than the elliptical head, so that a proper contact area can be provided, the sawtooth surface is suitable for one pin or lead and the like, the pins, the leads and the like cannot be damaged, the stability of passing current is guaranteed, and the test accuracy and the one-time test passing rate are improved. The first spring 13 and the second spring 14 respectively ensure the elasticity and the pre-pressure of the probe and the detection head during use, the length of the first spring 13 and the length of the second spring 14 are both shorter than the length of the existing spring, the first spring 13 and the second spring 14 are not fatigued and lose elasticity after long-time compression or repeated reciprocating motion, the service life is prolonged, and the spring seat 15 increases the stability of the first spring 13 and the stability of the second spring 14. The first slide bar 16 and the second slide bar 17 respectively keep the first spring 13 and the second spring 14 to vertically move up and down, and the first spring 13 and the second spring 14 are prevented from being damaged due to friction with the inner wall of the needle tube 1. Contact column 31 keeps contact with the inner wall of needle tubing 1, and detection pole 32, syringe needle 33, button head 34 are conveniently connected with detection mechanism, and electric connection is realized to electric current can flow to needle tubing 1, steel ball 18, first spring 13, second spring 14, detection head and detection mechanism from the probe, conveniently detects. The first retainer ring 11 and the second retainer ring 12 prevent the probe and the detection head from being separated from the needle tube 1 respectively.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A double-ended low impedance probe, comprising:

the needle tube (1), the both ends of needle tube (1) are equipped with first retaining ring (11) and second retaining ring (12) respectively, be equipped with first spring (13) in needle tube (1), second spring (14), spring holder (15), first slide bar (16), second slide bar (17), steel ball (18), first slide bar (16), second slide bar (17) are fixed with the both ends of spring holder (15) respectively, the one end cover of first spring (13) is on first slide bar (16) and supports with spring holder (15), the one end cover of second spring (14) is on second slide bar (17) and supports with spring holder (15), steel ball (18) support the other end of second spring (14);

the probe comprises a probe rod (21) and a sawtooth surface (22), the probe rod (21) is positioned between the sawtooth surface (22) and the steel ball (18), and one end of the probe extends into the needle tube (1);

the detection head comprises a contact column (31), a detection rod (32), a needle head (33) and a round head (34), wherein the contact column (31) is positioned in the needle tube (1), and the contact column (31), the detection rod (32), the needle head (33) and the round head (34) are fixed together in sequence.

2. The double-ended low impedance probe of claim 1 wherein said needle cannula (1) is provided with a raised ring (19) on the outside.

3. The double-ended low impedance probe of claim 1 wherein said needle cannula (1) is provided with a detent (20) on the outside.

4. The double-ended low impedance probe of claim 1 wherein said probe rod (21) is provided with a bump (23) at one end.

5. The double-ended low impedance probe of claim 4 wherein one end face of said bump (23) is an inclined face.