Straight-through probe with long service life

Abstract

The utility model discloses a straight-through probe with long service life, which comprises a needle tube connector, a connecting shell is in threaded connection below the needle tube connector, an outer probe is arranged at the bottom, far away from the needle tube connector, of the connecting shell, and two groups of insulating pads are arranged at the joint of the outer probe and the connecting shell. According to the utility model, the outer side surface of the outer probe is provided with the contact piece whose side surface is of the inclined plane structure, so that when the outer probe is used for insertion connection, the protruding contact piece can firstly contact the connection port, and the outer surface of the outer probe is prevented from being rubbed in the insertion process. And the friction force of the connection of the outer probe can be increased through the elasticity of the contact piece and the abrasion lines on the outer side of the contact piece, so that the strength of the connection of the outer probe is increased, the outer probe is replaced to be in contact with the connection socket when the outer probe is plugged, the friction in the plugging process of the outer probe can be reduced, and the service life of the outer probe is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of probes, in particular to a straight-through probe with a long service life. Background Art

[0002] In the connection structure of some high-precision connectors, a probe structure is used. The probe can be used in the electronic field. It has a small structure and is easy to connect. It is especially widely used in circuit connections in precision instruments. The probe is fixed by plugging and unplugging the metal needle at the front end. There will be wear during the plugging and unplugging process, resulting in a reduced service life. A straight-through probe with a long service life will be required.

[0003] After searching, for example, Chinese patent document CN211785694U discloses a probe with a long service life. By setting a first needle shaft and a second needle shaft and placing them in a needle tube, the double probe structure can reduce the frequency of use of a single needle and reduce wear. The first spring group and the second spring group are respectively wound around the first needle shaft and the second needle shaft to form a protective structure, but there are still the following defects:

[0004] When the above-mentioned protective tube clamp is in use, the needle shaft needs to be replaced to reduce the number of times of use and reduce the loss caused by friction, but the needle shaft still contacts the connection port and is worn during the plugging and unplugging process. Utility Model Content

[0005] The purpose of the utility model is to provide a straight-through probe with a long service life to solve the problem that the straight-through probe with a long service life proposed in the above background technology needs to replace the needle shaft to reduce the number of uses and reduce the loss caused by friction, but the needle shaft is still worn when contacting the connection port during the plugging and unplugging process.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a straight-through probe with a long service life, comprising a needle tube connector, a connecting shell being threadedly connected to the lower part of the needle tube connector, an outer probe being arranged at the bottom of the connecting shell away from the needle tube connector, two sets of insulating pads being arranged at the connection between the outer probe and the connecting shell, an inner probe with a cylindrical structure being arranged inside the outer probe, and the length dimension of the inner probe is greater than the length dimension of the outer probe.

[0007] Preferably, a connecting line is provided on the top of the needle tube connector, and a buffer groove is provided inside the needle tube connector, and the buffer groove is slidably connected to the inner probe.

[0008] Preferably, four groups of contact pieces with strip structures are arranged on the side surface of the external probe, and a probe head is arranged at one end of the external probe away from the connection shell.

[0009] Preferably, the outer side surface of the contact piece is a sloped structure, and the thickness of the top of the contact piece close to the connection shell is greater than the thickness of the connection end of the contact piece and the probe head, and the slope of the contact piece protrudes from the outer surface of the outer probe.

[0010] Preferably, the four groups of contact pieces are distributed in a ring shape at an angle of 1.3° on the side of the outer probe, and the surfaces of the contact pieces are provided with grinding grooves.

[0011] Preferably, four groups of connection blocks are fixed to the side surface of the inner probe, and the position distribution of the four groups of connection blocks corresponds to the position distribution of the contact sheets, and gaps are provided between the connection blocks and the contact sheets.

[0012] Preferably, a connector is fixed on the top of the inner probe, and the connector is connected to a connecting line, a buffer groove is provided at a position of the needle tube connector close to the connector, and a spring is arranged inside the buffer groove.

[0013] Preferably, a telescopic tube is connected between the two groups of insulating pads, and the telescopic tube and the insulating pads are both made of rubber.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By arranging a contact piece with a sloped side surface on the outer surface of the external probe, when the external probe is used to insert and connect, the protruding contact piece can first contact the connection port to avoid friction on the outer surface of the external probe during the insertion process, and then the friction force of the external probe connection can be increased through the elasticity of the contact piece and the wear pattern on the outer side of the contact piece, thereby increasing the strength of the external probe connection. In this way, when the external probe is plugged in and out, the external probe is replaced by contact with the connection socket, which can reduce the friction loss during the plugging and unplugging of the external probe and extend the service life of the external probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the bottom structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the insulating pad in the utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the Chinese and foreign probes of the utility model;

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the utility model.

[0021] In the figure: 1, needle tube connector; 101, buffer slot; 102, spring; 2, connecting shell; 3, connecting wire; 4, external probe; 401, probe head; 402, contact piece; 403, wear pattern; 5, internal probe; 501, connecting block; 502, connector; 6, insulating pad; 601, telescopic tube. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] See also Figure 1-5 The utility model provides a straight-through probe with a long service life, including a needle tube connector 1, a buffer groove 101, a spring 102, a connecting shell 2, a connecting wire 3, an outer probe 4, a probe head 401, a contact piece 402, a wear pattern 403, an inner probe 5, a connecting block 501, a connector 502, an insulating pad 6, and a telescopic tube 601. The lower part of the needle tube connector 1 is threadedly connected with the connecting shell 2, the top of the needle tube connector 1 is provided with a connecting wire 3, and the inside of the needle tube connector 1 is provided with a buffer groove 101, and the buffer groove 101 is slidably connected with the inner probe 5, so that the spring 102 inside the buffer groove 101 can be squeezed by sliding the inner probe 5, and the spring 102 plays a buffering role.

[0024] An outer probe 4 is arranged at the bottom of the connecting shell 2 away from the needle tube connector 1, and four groups of contact pieces 402 with strip structures are arranged on the side of the outer probe 4, and a probe head 401 is arranged at one end of the outer probe 4 away from the connecting shell 2. The contact piece 402 is provided to protect the outer probe 4. When the outer probe 4 is plugged in or out, the contact piece 402 first contacts it, and then avoids friction on the outer surface of the outer probe 4 when inserted, thereby extending the life of the outer probe 4. The outer side surface of the contact piece 402 is a slope structure, and the thickness of the contact piece 402 near the top of the connecting shell 2 is greater than the thickness of the connecting end of the contact piece 402 and the probe head 401, and The inclined surface of the contact piece 402 protrudes from the outer surface of the outer probe 4. The contact piece 402 with the inclined surface structure allows the contact piece 402 to protrude from the side of the outer probe 4. During the insertion process of the outer probe 4, the contact piece 402 can be squeezed to retract into the inside of the outer probe 4 without affecting the normal use of the outer probe 4. The four groups of contact pieces 402 are distributed in a ring shape with a 90° angle on the side of the outer probe 4, and the surface of the contact piece 402 is provided with a grind pattern 403. The grind pattern 403 can increase the friction of the contact piece 402. When the outer probe 4 is inserted and connected, the friction can be increased through the contact piece 402 to strengthen the connection.

[0025] Two groups of insulating pads 6 are arranged at the connection between the outer probe 4 and the connecting shell 2, an inner probe 5 of a cylindrical structure is arranged inside the outer probe 4, and the length dimension of the inner probe 5 is larger than the length dimension of the outer probe 4, four groups of connecting blocks 501 are fixed on the side of the inner probe 5, and the position distribution of the four groups of connecting blocks 501 corresponds to the position distribution of the contact piece 402, and a gap is arranged between the connecting block 501 and the contact piece 402, and the connecting block 501 can limit the moving distance of the contact piece 402, a connector 502 is fixed on the top of the inner probe 5, and the connector 502 is connected to the connecting line 3, a buffer groove 101 is opened at the position of the needle tube connector 1 near the connector 502, and a spring 102 is arranged inside the buffer groove 101, and the spring 102 can play a buffering role for the inner probe 5, a telescopic tube 601 is connected between the two groups of insulating pads 6, and the telescopic tube 601 and the insulating pad 6 are both made of rubber.

[0026] When the embodiment of the present application is in use: by providing a contact piece 402 with a sloped side surface on the outer side surface of the outer probe 4, when the outer probe 4 is used to insert the connection, the protruding contact piece 402 can first contact the connection port to avoid friction on the outer surface of the outer probe 4 during the insertion process, and then the side surface of the contact piece 402 can be pushed back into the inner part of the outer probe 4 during the insertion, and the elasticity of the contact piece 402 can allow the contact piece 402 to pop outward, and the wear pattern 403 on the outer side of the contact piece 402 can increase the friction force of the connection of the outer probe 4, thereby increasing the strength of the connection of the outer probe 4, and when the outer probe 4 is pulled out, the contact piece 402 will also pop outward to replace the outer probe 4 to contact the connection socket again, so that The friction loss during the plugging and unplugging of the external probe 4 can be reduced, and the service life of the external probe 4 can be extended. In this way, a straight-through probe with a long service life is ready for use. It should be noted that the utility model is a straight-through probe with a long service life. The components are all universal standard parts or components known to technical personnel in the field. Its structure and principle can be known to technical personnel in the field through technical manuals or through conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and compatible monitoring computers and power supplies, are connected through wires. The specific connection means should refer to the above-mentioned working principle. The electrical connection is completed in the working order of each electrical component. The detailed connection means are well-known technologies in the field.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A straight-through probe with a long service life, comprising a needle-tube connector (1), characterized in that: A connecting shell (2) is threadedly connected to the lower portion of the needle tube connector (1); an outer probe (4) is arranged at the bottom of the connecting shell (2) away from the needle tube connector (1); two sets of insulating pads (6) are arranged at the connection between the outer probe (4) and the connecting shell (2); an inner probe (5) of a cylindrical structure is arranged inside the outer probe (4); and the length of the inner probe (5) is greater than the length of the outer probe (4).

2. A straight-through probe with a long service life according to claim 1, characterized in that: A connecting line (3) is provided on the top of the needle tube connector (1), a buffer groove (101) is provided inside the needle tube connector (1), and the buffer groove (101) is slidably connected to the inner probe (5).

3. A straight-through probe with a long service life according to claim 1, characterized in that: Four groups of contact pieces (402) with strip structures are arranged on the side surface of the external probe (4), and a probe head (401) is arranged at one end of the external probe (4) away from the connection housing (2).

4. A straight-through probe with a long service life according to claim 3, characterized in that: The outer side surface of the contact piece (402) is a sloped structure, and the thickness of the top of the contact piece (402) close to the connection housing (2) is greater than the thickness of the connection end of the contact piece (402) and the probe head (401), and the slope of the contact piece (402) protrudes from the outer surface of the outer probe (4).

5. A straight-through probe with a long service life according to claim 3, characterized in that: The four groups of contact pieces (402) are distributed in a ring shape at a 90° angle on the side of the outer probe (4), and the surfaces of the contact pieces (402) are provided with grinding patterns (403).

6. A straight-through probe with a long service life according to claim 1, characterized in that: Four groups of connection blocks (501) are fixed on the side of the inner probe (5), and the position distribution of the four groups of connection blocks (501) corresponds to the position distribution of the contact sheet (402), and a gap is provided between the connection block (501) and the contact sheet (402).

7. A straight-through probe with a long service life according to claim 1, characterized in that: A connector (502) is fixed on the top of the inner probe (5), and the connector (502) is connected to the connecting line (3). A buffer groove (101) is provided on the needle tube connector (1) near the connector (502), and a spring (102) is arranged inside the buffer groove (101).

8. A straight-through probe with a long service life according to claim 1, characterized in that: A telescopic tube (601) is connected between the two groups of insulating pads (6), and both the telescopic tube (601) and the insulating pads (6) are made of rubber.

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