CN201181303Y - Integrated large-current probe - Google Patents

Abstract

The utility model relates to the technical field of probes, in particular to an integrated large-current probe, which comprises a needle head, a middle tube, an outer tube, a tail needle and a spring, wherein the outer tube is a hollow structure with two through ends, the tail needle is connected with one end of the middle tube, the other end of the middle tube is connected with the needle head, the integral structure formed by the needle head, the middle tube and the tail needle penetrates into the outer tube from one end and penetrates out from the other end, one end of the middle tube is provided with a limit step, and one end of the outer tube is clamped; the spring is sleeved on the outer surface of the middle pipe, and two ends of the spring are respectively contacted with the end surface of the needle head and the end surface of the outer pipe; the utility model changes the design that the spring is assembled in the tube by the traditional probe, but the spring is surrounded outside the tube, and the size of the spring is not restricted by the size of the tube, so the utility model can work under the environment of larger current and high frequency and has longer service life; in addition, even if some parts are damaged, the probe can be detached for repair, the whole probe does not need to be replaced, and the use cost is saved.

Description

The big current probe of integral type

Technical field:

The utility model relates to the probe technique field, refers in particular to the big current probe of a kind of integral type.

Background technology:

Probe is the pith in the electronic product web member, existing probe generally is to take to hold and in conjunction with helical spring structure, in the use of reality, general electric current is easy to concentrate on the small area that belongs to contact site between probe volute spring and volute spring and the needle tubing, with regard to existing probe technique, if electric current is less,, electric current during above-mentioned small path, can not impact the probe life-span even flowing through yet; But when probe need be flowed through the electric current of larger capacity, current concentration was during by volute spring and small contact site, and the easy deterioration of above-mentioned volute spring and small contact site also causes material melts or thermal characteristics changes, and then influenced probe serviceable life; Because spring is to be built in the pipe, even thereby have only part to be damaged, also need the replacing whole probe because of re-using, cause waste to a certain extent.

The utility model content:

The purpose of this utility model is exactly to provide a kind of integral type big current probe at the deficiency of prior art existence.

To achieve these goals, the technical solution adopted in the utility model is: the utility model comprises syringe needle, middle pipe, outer tube, tailpin and spring, described outer tube is the hollow-core construction that two ends connect, tailpin is connected with the one end of the central tube, the middle pipe other end is connected with syringe needle, and the one-piece construction that syringe needle, middle pipe and tailpin are combined into penetrates from an end of outer tube, passes from the other end, the one end of the central tube is provided with limited step, and outer tube one end is fastened on the limited step; Spring housing is at middle tube outer surface, and both ends of the spring contacts with the outer tube end face with the syringe needle end face respectively.

Pipe is the hollow-core construction that two ends connect in described, during tailpin one end inserts in the pipe, and with the inner chamber wringing fit of middle pipe.

Described syringe needle offers blind hole, and an end of middle pipe inserts in the blind hole of syringe needle, and with this blind hole wringing fit.

Outer tube offers screw thread away from the outside surface of an end of spring.

Described syringe needle exposed junction offers blade tooth.

The beneficial effects of the utility model: the utility model changes conventional probe groups of springs is contained in the interior design of pipe, but with ring spring outside pipe, its size is the constraint of managed size not, can suitably increase the external diameter of spring, so, the utility model can be worked under big electric current, high frequency environment, and has long serviceable life; In addition, also because spring places pipe outer, even thereby have part to be damaged, also can disassemble repairing, and not need to change whole probe, saved use cost.

Description of drawings:

Fig. 1 is a stereographic map of the present utility model;

Fig. 2 is a front view of the present utility model;

Fig. 3 is the cut-open view of A-A direction of the present utility model;

Fig. 4 is an exploded view of the present utility model.

Embodiment:

See Fig. 1,2,3, shown in 4, the utility model comprises syringe needle 1, middle pipe 2, outer tube 3, tailpin 4 and spring 5, described outer tube 3 is hollow-core constructions that two ends connect, pipe 2 is hollow-core constructions that two ends connect in described, manage in 2 during tailpin 4 one ends insert, and with the inner chamber wringing fit of middle pipe 2, described syringe needle 1 offers blind hole 12, one end of middle pipe 2 inserts in the blind hole 12 of syringe needle 1, and with these blind hole 12 wringing fits, syringe needle 1, the one-piece construction that middle pipe 2 and tailpin 4 are combined into penetrates from an end of outer tube 3, passes from the other end, middle pipe 2 one ends are provided with limited step 21, and outer tube 3 one ends are fastened on the limited step 21; Pipe 2 outside surfaces during spring 5 is enclosed within, spring 5 two ends contact with outer tube 3 end faces with syringe needle 1 end face respectively.

Outer tube 3 offers screw thread 31 away from the outside surface of an end of spring 5, and outer tube 3 can be threaded with the parts of checkout equipment by screw thread 31.

Described syringe needle 1 exposed junction offers blade tooth 11.

The above embodiment, it is better embodiment of the present utility model, be not to be used for limiting practical range of the present utility model, so all equivalences of doing according to the described structure of the utility model claim, feature and principle change or modify, and all should be included in the utility model patent claim.

Claims (5)

1. An integrated high-current probe, including a needle head, a middle tube, an outer tube, a tail needle and a spring. The outer tube is a hollow structure with both ends connected. It is characterized in that the tail needle is connected to one end of the middle tube, and the middle tube The other end is connected with the needle head, the overall structure composed of the needle head, the middle tube and the tail needle penetrates through one end of the outer tube and passes out from the other end, one end of the middle tube is provided with a limit step, and one end of the outer tube is clamped on the limit step ; The spring is sleeved on the outer surface of the middle tube, and the two ends of the spring are respectively in contact with the end face of the needle head and the end face of the outer tube. 2. The integrated high-current probe according to claim 1, characterized in that: the middle tube is a hollow structure with both ends connected through, and one end of the tail needle is inserted into the middle tube and fits tightly with the inner cavity of the middle tube. 3. The integrated high-current probe according to claim 1, characterized in that: said needle is provided with a blind hole, and one end of the middle tube is inserted into the blind hole of the needle, and tightly fitted with the blind hole. 4. The integrated high-current probe according to claim 1, characterized in that: the outer surface of the outer tube at the end away from the spring is provided with threads. 5. The integrated high-current probe according to any one of claims 1 to 4, characterized in that claws are provided on the exposed end of the needle.

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