Probe mechanism for PCB detection

Abstract

The utility model discloses a probe mechanism for PCB detection, which relates to the technical field of probes and comprises a probe body, a probe core seat is mounted at the lower end of the probe body, and a spring is mounted between the probe core seat and the probe body. A connecting seat is correspondingly arranged below the probe core seat, a probe head is fixed at the lower end of the connecting seat, a fixing piece sleeves the outer side of the lower end of the probe core seat, and the fixing piece sleeves the outer side of the probe head. The probe mechanism for PCB detection has a buffer function when being in contact with the PCB, not only can protect a circuit on the PCB from being poked by the probe, but also can prolong the service life of the probe, meanwhile, the probe head can be quickly replaced, and the accuracy and stability of connection are ensured, so that the probe can keep reliable contact in the detection process, and the detection efficiency is improved. The accuracy of a detection result is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to probe technical field, concretely is a kind of probe mechanism for PCB detection. BACKGROUND

[0002] In modern electronic manufacturing field, printed circuit board (PCB) as the key component of various electronic devices, its quality detection is crucial. The accuracy of PCB detection is directly related to the performance, stability and reliability of electronic equipment, slightly careless, the PCB with quality defects flows into subsequent production link, not only will greatly increase production cost, but also can lead to product failure frequently, seriously affect enterprise reputation and market competitiveness.

[0003] In the PCB detection process, probe mechanism plays an indispensable role. It is the key component for realizing the electrical connection between detection equipment and PCB, and can accurately obtain the electrical signal on PCB to provide data support for detection. However, the traditional probe mechanism for PCB detection has many problems to be solved.

[0004] For example, the structure design of traditional probe mechanism is not reasonable, and the replacement operation of probe head is relatively complicated. In actual detection process, probe head as the component directly contacting PCB, due to long-term use or external force impact, is easy to be damaged. Once the probe head is damaged, it needs to be replaced in time to ensure the accuracy and continuity of detection work.

[0005] Therefore, we propose a probe mechanism for PCB detection to solve the problems mentioned above. UTILITY MODEL CONTENT

[0006] 1. The technical problem to be solved by the utility model is:

[0007] The utility model aims to provide a probe mechanism for PCB detection to solve the problems in the above background technology.

[0008] 2. Technical scheme:

[0009] To achieve the above purpose, the utility model provides the following technical scheme: a probe mechanism for PCB detection, comprising a probe body, a needle core seat is installed at the lower end of the probe body, and a spring is installed between the needle core seat and the probe body;

[0010] A connecting seat is provided below the needle core seat, a probe head is fixed at the lower end of the connecting seat, a fixing member is sleeved outside the lower end of the needle core seat, and the fixing member is sleeved outside the probe head.

[0011] Further, the lower end of the needle core seat is externally sleeved with a threaded sleeve, and both sides of the lower end of the needle core seat are fixed with positioning rods, and the two positioning rods are symmetrically arranged about the center of the needle core seat.

[0012] Through the above technical scheme, the needle core seat can improve the stability of subsequent connection under the action of the symmetrical positioning rods.

[0013] Further, the left and right sides of the connecting seat are provided with positioning grooves matched with the positioning rods, the depth of the positioning grooves is not less than the length of the positioning rods, and the positioning grooves are designed in a T shape.

[0014] Through the above technical scheme, the connecting seat can be accurately connected with the needle core seat through the cooperation of the positioning rods and the positioning grooves.

[0015] Further, the fixing member comprises a rotating ring, a limiting disc is rotatably installed in the lower end of the rotating ring, a through hole is longitudinally and transversely formed in the middle of the limiting disc, and a plurality of rolling balls are movably installed on the outer wall of the limiting disc and are equiangularly distributed about the center of the limiting disc.

[0016] Through the above technical scheme, the limiting disc can rotate in the lower end of the rotating ring, so that when the rotating ring rotates, the limiting disc can reduce the friction with the connecting seat.

[0017] Further, a threaded groove matched with the threaded sleeve is formed in the upper end inner wall of the rotating ring, and the height of the rotating ring is greater than the height of the connecting seat.

[0018] Through the above technical scheme, the rotating ring is connected and fixed with the needle core seat by cooperating with the threaded sleeve through the threaded groove in the upper end inner wall.

[0019] Further, the maximum diameter of the limiting disc is greater than the outer diameter of the connecting seat, and the inner diameter of the through hole is greater than the maximum diameter of the probe head.

[0020] Through the above technical scheme, the fixing member can be sleeved from the lower end of the probe head from bottom to top.

[0021] 3. Advantageous effects:

[0022] Compared with the prior art, the probe mechanism for PCB detection has a buffering function when contacting the PCB, can protect the circuit lines on the PCB from being damaged by the probe, prolong the service life of the probe itself, and can quickly replace the probe head, and the specific content is as follows:

[0023] The spring is arranged so that the probe has a buffering function when contacting the PCB, which can protect the circuit line on the PCB from being damaged by the probe and prolong the service life of the probe itself;

[0024] The needle core seat and the connecting seat are connected through the cooperation of the positioning rod and the positioning groove, so that the accuracy and stability of the connection are ensured, the probe can keep reliable contact during detection, and the accuracy of the detection result is improved.

[0025] When the probe head is damaged during use or due to long-term use, the rotary ring on the needle core seat is rotated until the rotary ring is separated from the needle core seat, and then the damaged probe head can be disassembled, then a new probe head is placed below the needle core seat by using the cooperation of the positioning rod and the positioning groove, the fixing member is sleeved on the outer side of the new probe head, and the rotary ring is rotated to drive the limiting disc to move upward by the threaded cooperation of the rotary ring and the threaded sleeve until the limiting disc is attached to the lower end face of the connecting seat, thereby realizing the quick replacement of the probe head. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a whole side view three-dimensional structure schematic view of the utility model;

[0027] Figure 2 It is an explosion schematic view of the utility model;

[0028] Figure 3 It is another perspective view of the utility model explosion schematic view;

[0029] Figure 4 It is a fixing member side cross-sectional structure schematic view of the utility model.

[0030] In the drawing: 1, probe body; 2, needle core seat; 21, threaded sleeve; 22, positioning rod; 3, spring; 4, connecting seat; 41, positioning groove; 5, probe head; 6, fixing member; 61, rotary ring; 62, limiting disc; 63, through hole; 64, ball. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the utility model, the technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the utility model.

[0032] In the description of the utility model, it is understood that the orientation or positional relation indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relation shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0033] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0034] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing", "provided with" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. Embodiment

[0035] Please refer to Figures 1-4 A probe mechanism for PCB detection, comprising a probe body 1, a needle core seat 2 is installed at the lower end of the probe body 1, and a spring 3 is installed between the needle core seat 2 and the probe body 1;

[0036] The probe body 1 is the main part of the whole mechanism, and the lower end is connected with the needle core seat 2; the spring 3 installed between the needle core seat 2 and the probe body 1 plays a buffering role. When the probe mechanism contacts the PCB, the spring 3 can avoid the hard collision between the probe head 5 and the PCB, thereby protecting the circuit line on the PCB from being damaged by the probe and prolonging the service life of the probe itself;

[0037] A connecting seat 4 is arranged below the needle core seat 2, the lower end of the connecting seat 4 is fixed with a probe head 5, the lower end of the needle core seat 2 is externally sleeved with a fixing part 6, the fixing part 6 is externally sleeved on the outside of the probe head 5; a threaded sleeve 21 is fixedly sleeved on the lower end of the needle core seat 2, positioning rods 22 are fixed on both sides of the lower end of the needle core seat 2, and the two positioning rods 22 are symmetrically arranged about the center of the needle core seat 2; positioning grooves 41 are arranged on both sides of the connecting seat 4 and matched with the positioning rods 22, the depth of the positioning grooves 41 is not less than the length of the positioning rods 22, and the positioning grooves 41 are designed in a "T" shape;

[0038] The needle core seat 2 and the connecting seat 4 are matched by the positioning rods 22 and the positioning grooves 41, the accuracy and stability of the connection between the two are ensured, the probe can maintain reliable contact during detection, and the accuracy of the detection result is improved;

[0039] The fixing part 6 comprises a swivel ring 61, a limiting disc 62 is rotatably installed in the lower end of the swivel ring 61, a through hole 63 is vertically and centrally arranged in the limiting disc 62, a plurality of rolling balls 64 are movably installed on the outer wall of the limiting disc 62, and the rolling balls 64 are equally angularly distributed about the center of the limiting disc 62; a threaded groove matched with the threaded sleeve 21 is arranged in the upper end inner wall of the swivel ring 61, and the height of the swivel ring 61 is greater than the height of the connecting seat 4; the maximum diameter of the limiting disc 62 is greater than the outer diameter of the connecting seat 4, and the inner diameter of the through hole 63 is greater than the diameter of the probe head 5;

[0040] When the probe head 5 is damaged during use or due to long-term use, the swivel ring 61 is rotated on the needle core seat 2 until the swivel ring 61 is separated from the needle core seat 2, then the damaged probe head 5 can be disassembled, then a new probe head 5 is accurately placed below the needle core seat 2 by the cooperation of the positioning rods 22 and the positioning grooves 41, the fixing part 6 is sleeved on the outside of the new probe head 5, and the swivel ring 61 is rotated, the limiting disc 62 is driven to move upward by the threaded cooperation of the swivel ring 61 and the threaded sleeve 21, until the limiting disc 62 is attached to the lower end surface of the connecting seat 4, thereby realizing the rapid replacement of the probe head 5.

[0041] Working principle: when the probe mechanism for PCB detection is used, if Figures 1-4When the probe head 5 is damaged during use or due to long-term use, the swivel ring 61 is rotated until the swivel ring 61 is separated from the needle core seat 2, and then the damaged probe head 5 can be removed. Then, by cooperation of the positioning rod 22 and the positioning groove 41, the new probe head 5 is accurately placed below the needle core seat 2, the fixing member 6 is sleeved on the outside of the new probe head 5, and the swivel ring 61 is rotated. By cooperation of the swivel ring 61 and the threaded sleeve 21, the limiting disc 62 is driven to move upward until the limiting disc 62 is attached to the lower end surface of the connecting seat 4, thereby realizing quick replacement of the probe head 5. When the PCB is detected, the spring 3 is buffered to protect the circuit line on the PCB from being damaged by the probe and prolong the service life of the probe itself.

[0042] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0043] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A probe mechanism for PCB board inspection, characterized by: Probe body (1) is installed with needle core seat (2) at lower end, spring (3) is installed between needle core seat (2) and probe body (1); Lower end of needle core seat (2) is correspondingly provided with connecting seat (4), probe head (5) is fixed at lower end of connecting seat (4), fixed part (6) is sleeved outside lower end of needle core seat (2), fixed part (6) is sleeved outside probe head (5).

2. The probe mechanism for PCB inspection as claimed in claim 1 wherein: Threaded sleeve (21) is fixed at lower end outside needle core seat (2), positioning rod (22) is fixed at both sides of lower end of needle core seat (2), and two positioning rods (22) are symmetrically arranged about the center of needle core seat (2).

3. The probe mechanism for PCB inspection as claimed in claim 1 wherein: Left and right sides of connecting seat (4) are provided with positioning groove (41) matched with positioning rod (22), the depth of positioning groove (41) is not less than the length of positioning rod (22), and the positioning groove (41) is designed as "T" shape.

4. The probe mechanism for PCB inspection as claimed in claim 1 wherein: The fixed part (6) includes a swivel ring (61), a limit disc (62) is rotatably installed inside the lower end of the swivel ring (61), a through hole (63) is formed through the middle of the limit disc (62), and a plurality of rolling balls (64) are movably installed on the outer wall of the limit disc (62), and the rolling balls (64) are evenly distributed at equal angles about the center of the limit disc (62).

5. The probe mechanism for PCB inspection as claimed in claim 4 wherein: A threaded groove is formed in the inner wall of the upper end of the swivel ring (61) and matched with the threaded sleeve (21), and the height of the swivel ring (61) is greater than the height of the connecting seat (4).

6. The probe mechanism for PCB inspection as claimed in claim 4 wherein: The maximum diameter of the limit disc (62) is greater than the outer diameter of the connecting seat (4), and the inner diameter of the through hole (63) is greater than the maximum diameter of the probe head (5).

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