PCB testing device capable of preventing needle bending
By combining a protective board with an elastic component in the PCB testing device, the problem of probe bending due to misalignment is solved, achieving effective protection of the probe, reducing production costs and improving production efficiency.
Patent Information
- Application Number
- CN202422902281.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-11-26
AI Technical Summary
When the probes of PCB testing equipment come into contact with PCB products, they are prone to misalignment and bending, which increases production costs and affects production schedule. Existing technology has failed to effectively protect the top of the probes.
A protective board is installed in the PCB testing device and connected to the pin board through an elastic component. During testing, the protective board moves downward to wrap around the top of the probe to prevent bending, and returns to its original position to protect the probe after testing.
It effectively reduces the probability of probe tip bending, reduces probe replacement frequency, and improves production efficiency and product quality.
Smart Images
Figure CN223637554U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the probe fixture field especially relates to a PCB testing device of preventing needle bending. BACKGROUND
[0002] In the PCB detection process, the probe of the PCB testing device is usually used for circuit detection of the PCB product, since the PCB product is sometimes out of position, the probe of the PCB testing device is in contact with the PCB product, and finally the probe of the PCB testing device is out of position and bent, the bent probe will subsequently injure other PCB products, causing huge losses, and the production cost also increases, and the probe needs to be replaced manually after being bent, this phenomenon occurs relatively frequently, seriously affecting product production progress and quality, in the prior art patent CN2627517Y, copper pillars and iron pillars are arranged between the pin plate, the sleeve plate and the detection plate, the support structure of the jig is increased to avoid deformation of the jig and bending of the probe, but the top of the probe is not protected, and the top of the probe is prone to bending. SUMMARY
[0003] The utility model discloses a PCB testing device of preventing needle bending, to solve the problem in the background art.
[0004] To achieve the above object, the utility model provides the following technical scheme:
[0005] Provide a kind of PCB testing device of preventing needle bending, including pin plate, detection plate, several fixed columns and several probes, several fixed columns are all fixed on detection plate, the pin plate is fixed on the top end of fixed column, several probes are evenly distributed on detection plate and are inserted through pin plate, the pin plate top is equipped with protection plate, the protection plate is connected with pin plate by at least one group of elastic components, the protection plate is equipped with with the first perforation corresponding to probe, and the first perforation is used to pass through probe.
[0006] Further, the elastic component includes a tapered column and a spring, the pin plate is provided with a groove, the bottom end of the spring is fixed on the bottom wall of the groove, the top end of the spring is connected with the bottom end of the tapered column, the bottom of the tapered column is slidably inserted into the groove, and the top of the tapered column is connected with the protection plate.
[0007] Further, the elastic component is four groups, and the four groups of elastic components are respectively arranged at the four ends of the pin plate.
[0008] Further, the top end of the pin plate is provided with at least one guide column, the protection plate is provided with a third perforation corresponding to the guide column, and the guide column is slidably inserted through the third perforation.
[0009] Further, the number of guide columns is four, and the four guide columns correspond to the four groups of elastic components one by one, and each fixed column is located outside the corresponding elastic component.
[0010] Further, a plurality of sleeve plates are arranged between the detection plate and the pin plate, the plurality of sleeve plates are distributed in parallel and at equal intervals in the vertical direction between the detection plate and the pin plate, and the probes pass through the plurality of sleeve plates in sequence.
[0011] Further, the protection plate is an insulating plate.
[0012] Compared with the prior art, the PCB testing device has the following beneficial effects:
[0013] The utility model provides a kind of PCB testing device for preventing bending needle, protection plate is set on pin plate top, protection plate is connected with pin plate by elastic component, when detecting, PCB product is pressed through the top of conical column or / and protection plate to compress spring, protection plate thus moves downward, after protection plate moves a distance, probe passes through protection plate and contacts with PCB product and starts detection, since protection plate is wrapped in the outer wall of the top of probe, if PCB product deviates, the probability of bending the top of probe can also be reduced, after detection, protection plate is moved to the top of probe again, prevent external object from accidentally touching probe, and protection is provided to probe;It is also provided with sleeve plate in middle part, and the sleeve plate supports the middle part of probe, to reduce the probability of bending the middle part of probe. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the overall structural diagram of the utility model;
[0015] Figure 2 It is the side view of the utility model;
[0016] Figure 3 It is the plan view of the utility model;
[0017] Figure 4 It is the overall structural diagram of protection plate of the utility model;
[0018] Figure 5 It is the sectional view of the utility model;
[0019] Figure 6 It is Figure 5 It is the enlarged view of P1;
[0020] The marks of components in the drawings are as follows: 1, protection plate;11, first perforation;12, second perforation;13, third perforation;2, pin plate;3, sleeve plate;4, detection plate;5, guide column;6, conical column;7, fixed column;8, probe;9, spring. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. For the purpose of clear illustration, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the present application. That is, in some embodiments of the present application, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in the drawings in a simple schematic manner.
[0022] It should be noted that all directional indications such as upper, lower, left, right, front, back, and the like in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, and the like between components in a certain specific posture such as shown in the drawings, and if the specific posture changes, the directional indications will also change accordingly.
[0023] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and does not mean to particularly indicate the order or sequence, nor to limit the present application. It is merely to distinguish components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.
[0024] In order to further understand the utility model content, characteristics and effects of the present application, the following embodiments are exemplified and described in detail as follows with the drawings.
[0025] Please refer to Figures 1 to 6The application provides a PCB testing device capable of preventing needle bending, which comprises a needle plate 2, a detection plate 4, a plurality of fixing columns 7 and a plurality of probes 8, the fixing columns 7 are fixed on the detection plate 4, the needle plate 2 is fixed on the top end of the fixing columns 7, the probes 8 are uniformly distributed on the detection plate 4 and penetrate through the needle plate 2, a protection plate 1 is arranged above the needle plate 2, the protection plate 1 is connected with the needle plate 2 through at least one set of elastic components, the protection plate 1 is provided with a first perforation 11 corresponding to the probes 8, the first perforation 11 is used for allowing the probes 8 to penetrate through, and at least a part of the protection plate 1 is made of soft rubber. During detection, the elastic components are compressed, the protection plate 1 moves downwards, the probes 8 penetrate through the first perforation 11 and then contact with a PCB product, and most of the top ends of the probes 8 are wrapped in the first perforation 11 of the protection plate 1. If the PCB product is deviated, the wrapping effect of the protection plate 1 on the top ends of the probes 8 can reduce the probability of bending of the probes 8. When the detection is completed, the protection plate 1 is moved upwards due to the recovery of the elastic components, and the top of the probes 8 is covered by the protection plate 1, thereby achieving the protection effect on the top of the probes 8.
[0026] Further, the elastic components comprise a taper column 6 and a spring 9, the needle plate 2 is provided with a groove, the bottom end of the spring 9 is fixed on the bottom wall of the groove, the top end of the spring 9 is connected with the bottom end of the taper column 6, the bottom of the taper column 6 is slidingly inserted into the groove, the top of the taper column 6 is connected with the protection plate 1, and at least a part of the taper column 6 is inserted into the groove in the initial state of the spring 9. The protection plate 1 is provided with a second perforation 12, the top of the taper column 6 is inserted into the second perforation 12, when detection is performed, the PCB product first generates a downward pressure on the top end of the taper column 6 and / or the protection plate 1, the protection plate 1 and the taper column 6 press the spring 9, the spring 9 is compressed, the protection plate 1 moves downwards, the probes 8 penetrate through the first perforation 11 and then contact with the PCB product, and the spring 9 is embedded in the groove. Since a part of the taper column 6 is inserted into the groove in the initial state of the spring 9, and the taper column 6 moves up and down in the groove in the compressed state of the spring 9, the inner wall of the groove can limit the taper column 6 and prevent the taper column 6 from deviating, thereby guiding the upward and downward movement of the protection plate 1.
[0027] Further, the elastic components are four sets and are arranged at four ends of the needle plate 2. When the PCB product is pressed, the four sets of elastic components simultaneously contact with the PCB product, the stress points are increased to disperse the pressing force, the PCB product is prevented from being damaged, and meanwhile, since the elastic components are distributed at the four ends of the needle plate 2, the protection plate 1 can synchronously move downwards when being pressed, thereby preventing deviation.
[0028] Further, the top end of the pin plate 2 is provided with at least one guide column 5, the protection plate 1 is provided with a third perforation 13 corresponding to the guide column 5, and the guide column 5 is slid through the third perforation 13. The guide column 5 and the third perforation 13 are in sliding fit, and when the protection plate 1 moves up and down, the guide column 5 can prevent the protection plate 1 from being deflected. The top end of the guide column 5 is provided with a limiting plate which is above the protection plate 1 and is used for abutting against the protection plate 1. When the detection is finished, the protection plate 1 is popped up by the elastic assembly, and because the limiting plate abuts against the protection plate 1, the protection plate 1 stops moving after moving a distance, thereby ensuring the position accuracy and stability of the protection plate 1.
[0029] Further, the number of the guide columns 5 is four, the four guide columns 5 correspond to the four groups of elastic assemblies one by one respectively, and each fixed column 7 is located outside the corresponding elastic assembly. The number of the guide columns 5 and the elastic assemblies is four respectively, and they are distributed at four ends of the pin plate 2, thereby playing a good fixing role on the protection plate 1.
[0030] Further, a plurality of sleeve plates 3 are arranged between the detection plate 4 and the pin plate 2, the plurality of sleeve plates 3 are distributed in parallel and at equal intervals in the vertical direction between the detection plate 4 and the pin plate 2, and the probes 8 pass through the plurality of sleeve plates 3 in sequence. The fixed column 7 penetrates all the sleeve plates 3, thereby ensuring that each section of the probes 8 between the detection plate 4 and the pin plate 2 is supported by the sleeve plates 3, preventing the middle part of the probes 8 from being bent. The fixed column 7 is distributed at four ends of the detection plate 4, thereby better supporting the sleeve plates 3 and the pin plate 2.
[0031] Specifically, the protection plate 1 is an insulating plate, and specifically, at least part of the protection plate 1 is made of rubber. When the top part of the probe 8 passes through the first perforation 11, because the protection plate 1 is made of rubber, it has the effect of preventing the probes 8 from conducting electricity.
[0032] In summary, when the PCB product is detected, the PCB product is in contact with the conical column 6 from the upper side and presses the spring 9 downward, and the protection plate 1 also moves downward. Because of the effect of the guide column 5, the protection plate 1 will not be deflected during the movement. When the protection plate 1 moves downward by a distance, the probe 8 will be in contact with the PCB product and start detection. If the PCB product has a deflection phenomenon and does not match the probe 8, because the protection plate 1 is wrapped outside the top wall of the probe 8, the top part of the probe 8 is not easy to be bent. A plurality of sleeve plates 3 are arranged at the middle part of the probe 8 for supporting. When the detection is finished, the spring 9 restores to the initial state and pops up the conical column 6 upward, and the protection plate 1 also moves upward. Because the top end of the guide column 5 is provided with a limiting plate, the protection plate 1 stops moving after moving a distance. At this time, the protection plate 1 covers the probe 8 below. The utility model has a good protection effect on the top part of the probe 8, and reduces the probability of the top part of the probe 8 being bent.
[0033] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A PCB testing device for preventing bending needle, comprising a needle inserting plate (2), a detecting plate (4), a plurality of fixing columns (7) and a plurality of probes (8), the plurality of fixing columns (7) are all fixed on the detecting plate (4), the needle inserting plate (2) is fixed on the top end of the fixing columns (7), and the plurality of probes (8) are uniformly distributed on the detecting plate (4) and penetrate through the needle inserting plate (2), characterized in that: The protection plate (1) is connected with the pin plate (2) through at least one set of elastic components, the protection plate (1) is provided with a first perforation (11) corresponding to the probe (8), and the first perforation (11) is used for the probe (8) to pass through. 2. The PCB testing device of claim 1, wherein: The elastic component comprises a tapered column (6) and a spring (9), the pin plate (2) is provided with a groove, the bottom end of the spring (9) is fixed on the bottom wall of the groove, the top end of the spring (9) is connected with the bottom end of the tapered column (6), the bottom of the tapered column (6) is slidingly inserted into the groove, and the top of the tapered column (6) is connected with the protection plate (1); in the initial state, at least a part of the tapered column (6) is inserted into the groove.
3. The PCB testing device for preventing a bending needle according to claim 1 or 2, wherein: The elastic component is four sets, and the four sets of elastic components are respectively arranged at four ends of the pin plate (2).
4. The PCB testing device of claim 3, wherein: The top end of the pin plate (2) is provided with at least one guide column (5), the protection plate (1) is provided with a third perforation (13) corresponding to the guide column (5), and the guide column (5) slidingly penetrates the third perforation (13).
5. The PCB testing device of claim 4, wherein: The number of the guide column (5) is four, the four guide columns (5) correspond to the four sets of elastic components one by one, and each fixed column (7) is located outside the corresponding elastic component.
6. The PCB testing device of claim 1, wherein: A plurality of sleeve plates (3) are arranged between the detection plate (4) and the pin plate (2), the plurality of sleeve plates (3) are distributed in parallel and at equal intervals in the vertical direction between the detection plate (4) and the pin plate (2), and the probe (8) sequentially passes through the plurality of sleeve plates (3).
7. The PCB testing device of claim 1, wherein: The protection plate (1) is an insulating plate.