Four-wire test probe and assembly for full-automatic first workpiece detector
By combining a glass fiber probe holder with a four-wire test probe assembly in a PCB four-wire test probe, the problems of unstable probe installation and difficult processing are solved, efficient mass production is achieved, and costs are reduced.
Patent Information
- Application Number
- CN202422564145.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-23
AI Technical Summary
Existing PCB four-wire test probes have problems such as uncontrollable manual polishing dimensions, weak probe fixing bracket strength, high processing difficulty and high assembly and debugging requirements, resulting in poor interchangeability, misjudgment of test results and high processing costs.
The glass fiber probe holder is combined with the four-wire test probe assembly. The upper and lower probe bodies are fixedly connected by an L-shaped structure. They are machined and separated into independent parts through wire cutting technology to ensure installation stability and production efficiency.
The installation stability and production efficiency of the probe are improved, the processing cost is reduced, the misjudgment of the test results is reduced, and it is suitable for mass production.
Smart Images
Figure CN223346933U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of test probes, in particular to a four-wire test probe and a component for a full-automatic first-article detector. Background Art
[0002] PCB four-wire test probes are currently mostly polished by hand to ensure that the distance between the two probes on the same side can be small enough. In order to prevent the two probes on the same side from being conductive, a common process on the market is to stick insulating isolation tape on the adjacent surfaces of the two probes on the same side for isolation.
[0003] The existing probe mechanism has the following problems:
[0004] 1. The size of manual grinding is uncontrollable and very random. Different probes are not interchangeable. The size and position change greatly after changing the needle or reinstalling it. It takes 2-4 hours to adjust the machine before resuming production.
[0005] 2. The probe's fixing bracket is weak, and each probe on the same side has an up and down floating amount of 3mm. During the test, the two probes will have relative movement, which will aggravate the wear of the isolation tape between the probes, resulting in insulation isolation damage and misjudgment of test results; at the same time, it will affect the service life of the probes.
[0006] 3. The processing is difficult and the assembly and debugging requirements are high. Common probes rely on manual polishing processing technology, which requires a long time and high skills of the processing workers. It is not conducive to mass production and will generate large processing costs. After the processing is completed, it is necessary to continue to stick adhesive tape, and the assembly and adjustment position also have high requirements for assembly and use debugging workers. Utility Model Content
[0007] The purpose of the present invention is to overcome the deficiencies of the above-mentioned background technology and to provide a four-wire test probe and assembly for a fully automatic first article detector.
[0008] In a first aspect, the present invention provides a four-wire test probe for a fully automatic first-article detector, which is arranged on a glass fiber probe holder of a four-wire test probe assembly. The four-wire test probe includes two probe upper bodies spaced apart and a probe lower body fixedly connected to the two probe upper bodies to form a whole.
[0009] The two probe upper bodies are symmetrically arranged in the middle of the probe lower body. The probe lower body is in an inverted 'L' shape. One end of the probe upper body is fixed on the cross arm of the probe lower body.
[0010] Furthermore, the probe upper body and the probe lower body may both be configured as steel structures.
[0011] Furthermore, the cross section of one end of the lower body of the probe is in a conical structure, and the conical end gradually becomes narrower from wide.
[0012] Furthermore, the probe lower body may be configured to have a slit structure, and the probe lower body may be configured as two separate entities, and the two probe lower bodies are respectively configured to correspond to the two probe upper bodies.
[0013] Furthermore, the gap between the lower bodies of the probes corresponds to the spacing between the upper bodies of the probes, and the gap between the lower bodies of the probes gradually narrows from wide.
[0014] Furthermore, a wire binding hole is pre-opened at the needle tail of the upper body of the probe.
[0015] In the second aspect, the present invention also proposes a four-wire test probe assembly for a fully automatic first-piece detector, including the fiberglass probe holder connected to the first-piece detector, and the four-wire test probe for the fully automatic first-piece detector of any of the above schemes, wherein the fiberglass probe holder is connected to the four-wire test probe at a vertical angle.
[0016] Furthermore, a probe matching hole is provided on the glass fiber probe holder at the position of the four-wire test probe, and the probe upper body of the four-wire test probe is inserted into the probe matching hole.
[0017] Furthermore, a positioning pin hole is opened on one side of the glass fiber probe bracket, and the number of the positioning pin holes is set to at least two.
[0018] Furthermore, the glass fiber probe bracket may be configured as an insulating glass fiber structure.
[0019] Compared with the prior art, the advantages of the present invention are as follows: through the assembly of the fiberglass probe holder, in conjunction with the probe upper body and probe lower body of the four-wire test probe, the fiberglass probe holder used can stably bear and be installed on the first-piece detector when the four-wire test probe is installed, thereby improving the strength of the fiberglass probe holder, and the probe upper body and probe lower body of the four-wire test probe can be designed according to the probe matching hole design size on the fiberglass probe holder, and can be machined, thereby improving the production efficiency of the four-wire test probe, and can be batch processed. After the four-wire test probe and the fiberglass probe holder are combined, the gap in the middle of the four-wire test probe is cut, and the cut is divided into two independent pieces. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the first state in the utility model.
[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the second state in the utility model.
[0022] Figure 3 It is a schematic diagram of the overall front view structure of the utility model.
[0023] Figure 4 It is a schematic diagram of the overall side structure of the utility model.
[0024] Figure 5 It is a schematic diagram of the overall top view structure of the utility model.
[0025] In the picture:
[0026] 1. Glass fiber probe bracket;
[0027] 2. Positioning pin hole;
[0028] 3. Probe matching hole;
[0029] 4. Probe upper body;
[0030] 5. Probe lower body. DETAILED DESCRIPTION
[0031] Reference will now be made in detail to specific embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Although the present invention will be described in conjunction with specific embodiments, it will be understood that the present invention is not intended to be limited to the described embodiments. On the contrary, it is intended to cover variations, modifications, and equivalents within the spirit and scope of the present invention as defined by the appended claims. It should be noted that the method steps described herein can be implemented by any functional block or functional arrangement, and any functional block or functional arrangement can be implemented as a physical entity or a logical entity, or a combination of the two.
[0032] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.
[0033] Note: The following example is only a specific example and is not intended to limit the embodiments of the present invention to the following specific steps, values, conditions, data, sequence, etc. Those skilled in the art can apply the concepts of the present invention to construct more embodiments not described in this specification by reading this specification.
[0034] 1. The size of manual grinding is uncontrollable and very random. Different probes are not interchangeable. The size and position change greatly after changing the needle or reinstalling it. It takes 2-4 hours to adjust the machine before resuming production.
[0035] 2. The probe's fixing bracket is weak, and each probe on the same side has an up and down floating amount of 3mm. During the test, the two probes will have relative movement, which will aggravate the wear of the isolation tape between the probes, resulting in insulation isolation damage and misjudgment of test results; at the same time, it will affect the service life of the probes.
[0036] 3. The processing is difficult and the assembly and debugging requirements are high. Common probes rely on manual polishing processing technology, which requires a long time and high skills of the processing workers. It is not conducive to mass production and will generate large processing costs. After the processing is completed, it is necessary to continue to stick adhesive tape, and the assembly and adjustment position also have high requirements for assembly and use debugging workers.
[0037] In order to solve the problems existing in the above-mentioned test probes, the utility model proposes a four-wire test probe and assembly for a fully automatic first article detector.
[0038] In this embodiment, please refer to Figure 1 、 Figure 2 and Figure 3 The present invention provides a four-wire test probe for a fully automatic first-article detector, which is arranged on a glass fiber probe bracket 1 of a four-wire test probe assembly. The four-wire test probe includes two probe upper bodies 4 arranged in a gap and a probe lower body 5 fixedly connected to the two probe upper bodies 4 to form a whole; the two probe upper bodies 4 are symmetrically arranged in the middle of the probe lower body 5, and the probe lower body 5 is an inverted "L"-shaped structure, and one end of the probe upper body 4 is fixedly arranged on the cross arm of the probe lower body 5.
[0039] like Figure 1 、 Figure 2 and Figure 3 As shown, the four-wire test probe is arranged on the glass fiber probe bracket 1 of the component, and the two are arranged perpendicular to each other. The four-wire test probe is mainly composed of a probe upper body 4 and a probe lower body 5. The number of the probe upper bodies 4 is set to two, and there is a spacing (gap) between the two probe upper bodies 4. One end of the probe upper body 4 is fixedly connected to the probe lower body 5, so that the probe upper body 4 and the probe lower body 5 form a complete probe as a whole. Specifically, strictly speaking, the partial shell where the probe lower body 5 is connected to the probe upper body 4 forms two separate bodies, that is, it is divided into two separate individuals on the left and right according to the spacing (gap) between the probe upper bodies 4. In short, when prefabricating the four-wire test probe, the probe lower body 5 of the four-wire test probe is an integral structure, and the gap between the probe upper bodies 4 corresponds to the center point of the probe lower body 5. Subsequently, the gap between the probe upper bodies 4 is used for cutting to form two separate individuals.
[0040] See also Figure 1 , the probe upper body 4 and the probe lower body can both be set as steel structures.
[0041] like Figure 1 As shown, the four-wire test probe is assembled by interference fitting of a stainless steel probe and a glass fiber probe holder 1 made of insulating coin material.
[0042] See also Figure 1 and Figure 2 The cross-section of one end of the probe lower body 5 is a conical structure, and the conical end gradually narrows from wide. The probe lower body 5 can be set to have a gap structure. The probe lower body 5 is set to two separate individuals. The two probe lower bodies 5 are respectively arranged corresponding to the two probe upper bodies 4. The gap between the probe lower bodies 5 corresponds to the spacing between the probe upper bodies 4. The gap between the probe lower bodies 5 gradually narrows from wide, and a wire binding hole is pre-opened at the needle tail of the probe upper body 4.
[0043] like Figure 1 and Figure 2 As shown, the white steel raw material of the four-wire test probe is processed by wire cutting to the following Figure 1 Structure, pre-cut needle tail size and needle tip size of the probe upper body 4 and the probe lower body 5, the needle tip size is set according to the minimum size of the test product, the size of the needle tail and the glass fiber probe bracket 1 is processed according to the interference fit tolerance, and the needle tail of the probe upper body 4 is reserved for winding the lead wire.
[0044] After assembling the four-wire test probe and the insulating glass fiber, the probe is then divided into two halves using a wire cutting process. The existing technology involves processing each of the halves separately and then splicing them together, leaving no gap between them. In contrast, this application perfectly solves this problem.
[0045] Specifically, after the four-wire test probe is assembled into a whole, a wire cutting process is used to cut the middle gap of the probe lower body 5 (corresponding to the gap of the probe upper body 4), and the probe is divided into two independent parts to complete the final processing.
[0046] In this embodiment, please refer to Figure 1 、 Figure 4 and Figure 5 The present invention also proposes a four-wire test probe assembly for a fully automatic first-article detector, including a fiberglass probe holder 1 connected to the first-article detector, and also includes any four-wire test probe for a fully automatic first-article detector. The fiberglass probe holder 1 is connected to the four-wire test probe at a vertical angle, and the fiberglass probe holder 1 is provided with a probe matching hole 3 at the position of the four-wire test probe. The probe upper body 4 of the four-wire test probe is inserted into the probe matching hole 3. A positioning pin hole 2 is provided on one side of the fiberglass probe holder 1, and the number of the positioning pin holes 2 is set to at least two. The fiberglass probe holder 1 can be set to an insulating fiberglass structure.
[0047] like Figure 1 、 Figure 4 and Figure 5As shown, first process the raw material of an insulating glass fiber according to the drawing. Figure 1 The structure enables the four-wire test probe and the probe matching hole 3 to be assembled according to the interference fit tolerance to ensure a firm assembly; the positioning pin hole 2 for installation and positioning is processed according to the sliding clearance with the reserved tolerance to ensure accurate positioning and easy disassembly and assembly.
[0048] When using the present invention, the glass fiber probe holder 1 is installed on the first-piece detector, or the four-wire test probe is first installed on the glass fiber probe holder 1, and then the glass fiber probe holder 1 is installed on the first-piece detector. After the four-wire test probe and the glass fiber probe holder 1 are assembled into a whole, the wire cutting process is used to cut the middle gap of the four-wire test probe and divide it into two independent pieces.
[0049] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0050] It should be noted that, in the present invention, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.
[0051] The foregoing description is intended only to provide specific embodiments of the present invention, intended to enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but rather to be construed in the broadest manner consistent with the principles and novel features of the present invention.
Claims
1. A four-wire test probe for a fully automatic first article detector, arranged on a glass fiber probe holder (1) of a four-wire test probe assembly, characterized in that: The four-wire test probe comprises two probe upper bodies (4) spaced apart and a probe lower body (5) fixedly connected to the two probe upper bodies (4) to form a whole; The two probe upper bodies (4) are symmetrically arranged in the middle of the probe lower body (5). The probe lower body (5) is in an inverted 'L'-shaped structure. One end of the probe upper body (4) is fixed on the cross arm of the probe lower body (5).
2. A four-wire test probe for a fully automatic first article inspection instrument according to claim 1, characterized in that: The probe upper body (4) and the probe lower body can both be configured as steel structures.
3. A four-wire test probe for a fully automatic first article inspection instrument according to claim 1, characterized in that: The cross section of one end of the probe lower body (5) is in a conical structure, and the conical end gradually becomes narrower from wide.
4. A four-wire test probe for a fully automatic first article inspection instrument according to claim 1, characterized in that: The probe lower body (5) can be configured to have a slit structure, and the probe lower body (5) is configured as two separate entities, and the two probe lower bodies (5) are respectively configured to correspond to the two probe upper bodies (4).
5. A four-wire test probe for a fully automatic first article inspection instrument according to claim 4, characterized in that: The gap between the probe lower bodies (5) corresponds to the spacing between the probe upper bodies (4), and the gap between the probe lower bodies (5) gradually narrows from wide.
6. A four-wire test probe for a fully automatic first article inspection instrument according to claim 1, characterized in that: A wire binding hole is pre-opened at the needle tail of the probe upper body (4).
7. A four-wire test probe assembly for a fully automatic first article detector, characterized in that: The invention comprises the glass fiber probe holder (1) connected to the first article detector, and also comprises a four-wire test probe for the fully automatic first article detector according to any one of claims 1 to 6, wherein the glass fiber probe holder (1) is connected to the four-wire test probe at a vertical angle.
8. A four-wire test probe assembly for a fully automatic first article inspection instrument according to claim 7, characterized in that: The glass fiber probe holder (1) is provided with a probe matching hole (3) at the position of the four-wire test probe, and the probe upper body (4) of the four-wire test probe is inserted into the probe matching hole (3).
9. A four-wire test probe assembly for a fully automatic first article inspection instrument according to claim 7, characterized in that: A positioning pin hole (2) is provided on one side of the glass fiber probe bracket (1), and the number of the positioning pin holes (2) is set to at least two.
10. A four-wire test probe assembly for a fully automatic first article inspection instrument according to claim 7, characterized in that: The glass fiber probe bracket (1) can be configured as an insulating glass fiber structure.