TWI661200B - Probe structure - Google Patents

Abstract

The invention provides a probe structure, comprising: a needle, one end of the needle is flat, and the other end of the needle is spherical; a needle shaft, the upper part of the needle shaft is a cylinder, and the other end of the needle is accommodated in the upper part of the needle shaft Within the top end, the lower part of the needle shaft is at least a trihedron, and the bottom end of the lower part has an inclined surface; a conductive inclined block, one end of the conductive inclined block has an inclined surface, and the outside of the conductive inclined block is at least a trihedron, and the lower end of the lower part is The inclined surface is in close contact with the inclined surface of one end of the conductive inclined block, and the other end of the conductive inclined block has a groove; an insulating sheet is accommodated in the groove of the other end of the conductive inclined block; an elastic member, one end of the elastic member Connected to the insulating sheet; and a needle tube having a hollow space, wherein the inner peripheral wall of the needle tube has at least three planes, and the lower part of the needle shaft, the conductive oblique block, the insulating sheet and the elastic member are accommodated in the hollow space of the needle tube.

Description

Probe structure

The present invention relates to a probe, and more particularly to a probe structure.

Probe structures commonly used in the industry today are shown in Figures 1 and 2. FIG. 1 shows a schematic perspective view of a conventional probe structure, and FIG. 2 shows an internal assembly schematic view of a conventional probe.

As shown in FIG. 2, when the conventional probe is used, the bottom of the needle shaft 1 of the conventional probe is provided with an inclined surface 2, and the spring 3 pushes against the sphere 4, and the sphere 4 pushes against the needle shaft 1. The bottom of 1 is provided with a bevel 2, so the sphere 4 pushes the needle shaft 1 to a side inside the needle tube 5, so that the needle shaft 1 is in contact with the side wall of the needle tube 5 to form a conductive path. However, because the needle tube 5 and the needle shaft 1 are both cylindrical, the contact area between the needle shaft 1 and the side wall of the needle tube 5 is small, that is, it shows a linear contact 6.

Furthermore, FIG. 3 shows a cross-sectional view taken along the line A-A of FIG. 2. As shown in Figure 3, the conductive paths are all contacted by tangent lines with a circular area. That is to say, the current flow only contacts the area of a line. Therefore, the limited contact area will limit the maximum current flux. When the probe head is exposed to a large current, it is very easy to cause the probe to heat up, so there will be safety concerns.

In view of this, how to provide a probe structure that can effectively increase the contact area between the needle shaft and the needle tube, thereby effectively increasing the maximum current flux and making the use of the probe safer is one of the important issues at present.

In view of the shortcomings of the above-mentioned conventional technologies, an object of the present invention is to provide a probe structure that can fully fit the probe head to the contact surface to be conducted, and increase the contact area of current conduction, so as to prevent the burnout of the probe.

In order to achieve the above object, a probe structure provided according to the present invention includes: a needle, one end of the needle is a plane, the other end of the needle is a spherical surface; a needle shaft, an upper part of the needle shaft is A cylinder, the other end of the needle is accommodated in the top of the upper part of the needle shaft, the lower part of the needle shaft is at least a trihedron, and the bottom end of the lower part has an inclined surface; a conductive inclined block, the conductive inclined One end of the block has an inclined surface and the outside of the conductive inclined block is at least a trihedron. The inclined surface at the bottom end of the lower part is in close contact with the inclined surface of one end of the conductive inclined block. The other end of the conductive inclined block has a groove. An insulating piece accommodated in the groove at the other end of the conductive oblique block; an elastic member having one end connected to the insulating piece; and a needle tube having a hollow space, wherein the needle tube The inner peripheral wall has at least three planes. The lower part of the needle shaft, the conductive oblique block, the insulating sheet and the elastic member are accommodated in the hollow space of the needle tube.

Preferably, the needle tube complex includes an extended cylindrical body, and the extended cylindrical body is integrally formed with the needle tube.

Preferably, the conductive oblique block is at least a trihedron.

Preferably, the elastic member is a spring.

Preferably, the plane at one end of the needle is in electrical contact with the outside.

1‧‧‧ Needle shaft

2‧‧‧ bevel

3‧‧‧spring

4‧‧‧ sphere

5‧‧‧ Needle tube

6‧‧‧ line contact

10‧‧‧ Needle

15‧‧‧ angle

20‧‧‧ Needle shaft

25‧‧‧ bevel

30‧‧‧Conductive inclined block

301‧‧‧groove

35‧‧‧ bevel

40‧‧‧Insulation sheet

50‧‧‧elastic

60‧‧‧ Needle tube

601‧‧‧Hollow Space

602‧‧‧Extended cylindrical body

70‧‧‧ face contact

Figure 1 shows a schematic perspective view of a conventional probe; Figure 2 shows a schematic internal assembly of the conventional probe; 3 is a cross-sectional view taken along the line AA of FIG. 2; FIG. 4 is a schematic perspective view showing a probe structure according to a preferred embodiment of the present invention; and FIG. 5 is a perspective view showing a probe structure according to a preferred embodiment of the present invention Exploded schematic diagram; FIG. 6 is a schematic diagram showing a combination of the probe structure according to a preferred embodiment of the present invention; and FIG. 7 is a BB sectional view showing the probe structure shown in FIG. 6 according to a preferred embodiment of the present invention .

The following is a description of specific embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various details in the description of the present invention can also be modified and changed based on different viewpoints and applications without departing from the spirit of the present invention.

According to a preferred embodiment of the present invention, FIG. 4 shows a three-dimensional schematic diagram of a probe structure, and FIG. 5 shows a three-dimensional exploded schematic diagram of the probe structure. As shown in FIG. 5, the probe structure of the present invention includes a needle 10, a needle shaft 20, a conductive oblique block 30, an insulating sheet 40, an elastic member 50, and a needle tube 60.

Wherein, one end of the needle 10 is a flat surface, and may have other shapes, but the invention is not limited thereto, and the other end of the needle 10 is a spherical surface. Therefore, one end of the spherical surface of the needle 10 can adjust the angle 15 of the needle, so that one end of the flat surface of the needle 10 can completely fit the conducting contact surface.

According to a preferred embodiment of the present invention, as shown in FIG. 5, the upper part of the needle shaft 20 is a cylinder, the other end of the needle 10 can be accommodated in the top of the upper part of the needle shaft 20, and the lower part of the needle shaft 20 is An at least trihedron (preferably a tetrahedron), and the lower end of the lower part has an inclined surface 25.

According to a preferred embodiment of the present invention, one end of the conductive inclined block 30 also has an inclined surface, and the outside of the conductive inclined block 30 is at least a trihedron. The inclined surface 25 at the bottom end of the lower part of the needle shaft 20 is in close contact with the inclined surface 35 at one end of the conductive inclined block 30, which can increase the current flow to the opposite surface of the needle tube 60 and effectively increase the conductive area. In addition, the conductive inclined block 30 The other end has a groove 301

According to a preferred embodiment of the present invention, the insulating sheet 40 can be accommodated in the groove 301 at the other end of the conductive slanting block 30. In addition, one end of the elastic member 50 may be connected to the insulating sheet 40.

According to a preferred embodiment of the present invention, the needle tube 60 has a hollow space 601. The peripheral wall of the hollow space 601 of the needle tube 60 has at least three planes (preferably a four-plane hollow space). The block, the insulating sheet 40 and the elastic member 50 are all accommodated in the hollow space 601 of the needle tube 60.

It is worth mentioning that, as shown in FIG. 5, the needle tube 60 of the present invention may include an extended cylindrical body 602 which is integrally formed with the needle tube 60.

According to a preferred embodiment of the present invention, as shown in FIG. 5, the extended cylindrical body 602 of the needle tube 60 and one end of the flat surface of the needle 10 can be directly in electrical contact with the outside.

Incidentally, as shown in FIG. 5, the conductive inclined block 30 is also an at least trihedron (preferably a tetrahedron), and the elastic member 50 may be a spring.

FIG. 6 shows a combined schematic view of the probe structure of the present invention; and FIG. 7 shows a B-B cross-sectional view of the probe structure shown in FIG. 6. As shown in FIG. 7, since the lower part of the needle shaft 20 is an at least trihedron (preferably a tetrahedron) and the conductive oblique block 30 is also an at least trihedron (preferably a tetrahedron), the needle shaft 20 The lower part and the conductive slant block 30 can be in contact with the peripheral wall area of the hollow space 601 of the needle tube 60 (that is, face contact 70; that is, face contact with at least the trihedron outside the conductive slant block 30), thereby effectively increasing contact. Area, can reach the maximum current flux, and can effectively prevent Damage caused by needle overheating.

In summary, the probe structure provided by the present invention has the following advantages, because the probe structure of the present invention is composed of a needle (which has a flat end and a spherical end respectively), a needle shaft, and a conductive oblique block (which can be a tetrahedron) ), An insulating sheet, an elastic piece, and a needle tube (having a four-plane hollow space), so the probe structure of the present invention allows the user to achieve the effect of maximum current flux under the condition of large current contact using the probe. And can effectively prevent damage caused by probe overheating.

However, the above-mentioned embodiments merely illustrate the effectiveness of the present invention, but are not intended to limit the present invention. Any person skilled in the art can modify and change the above-mentioned embodiments without departing from the spirit and scope of the present invention. . In addition, the number of components in the above-mentioned embodiments is merely illustrative, and is not intended to limit the present invention. Therefore, the scope of protection of the rights of the present invention should be listed in the following patent application scope.

Claims (6)

A probe structure includes: a needle, one end of the needle is a plane, the other end of the needle is a spherical surface, a needle shaft, an upper part of the needle shaft is a cylinder, and the other end of the needle is accommodated in Within the top of the upper part of the needle shaft, the lower part of the needle shaft is at least a trihedron, and the bottom end of the lower part has an inclined surface; a conductive inclined block, one end of the conductive inclined block has an inclined surface, and the lower end of the lower part The inclined surface is in close contact with the inclined surface of one end of the conductive inclined block, and the other end of the conductive inclined block has a groove; an insulating sheet is accommodated in the groove of the other end of the conductive inclined block; an elastic member One end of the elastic member is connected to the insulating sheet; and a needle tube having a hollow space, wherein a peripheral wall of the hollow space of the needle tube has at least three planes, a lower part of the needle shaft, the conductive oblique block, the insulating sheet And the elastic member is accommodated in the hollow space of the needle tube. The probe structure according to item 1 of the scope of patent application, wherein the needle tube comprises an extended cylindrical body, and the extended cylindrical body is integrally formed with the needle tube. The probe structure according to item 2 of the patent application scope, wherein the extended cylindrical body is in electrical contact with the outside. The probe structure according to item 1 of the patent application scope, wherein the conductive oblique block is at least a trihedron. The probe structure according to item 1 of the patent application scope, wherein the elastic member is a spring. The probe structure according to item 1 of the scope of patent application, wherein the plane at one end of the needle is in electrical contact with the outside.