Fixing structure of fixed needle bed for PCB (Printed Circuit Board) detection

Abstract

The utility model discloses a fixed needle bed fixing structure for PCB detection, which can effectively fix detection needles better, and comprises a fixing plate, a first detection plate fixedly connected to the upper side of the fixing plate, a second detection plate arranged on the upper side of the first detection plate, and a plurality of guide plates arranged between the first detection plate and the second detection plate. A plurality of guide plates are arranged on the first detection plate, a plurality of fixing rods and reinforcing rods are arranged between the first detection plate and the second detection plate, each fixing rod and each reinforcing rod penetrate through each guide plate, and a plurality of flexible connection mechanisms are arranged on the fixing plates. The service life of the device is prolonged, the PCB can be protected during detection, better detection precision is achieved, and installation and detection are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the PCB board detection technical field relates to a kind of fixed needle bed fixing structure for PCB board detection. BACKGROUND

[0002] PCB board is a kind of basic carrier for supporting and connecting electronic components, it is a kind of board by insulating material, covered with conductive path, for connecting and supporting electronic components, PCB board is usually used in electronic equipment and product, such as computer, mobile phone, TV, automotive electronic system etc., it is crucial to effectively detect the quality and performance of PCB board after production.

[0003] The existing PCB board is generally detected by needle bed to PCB board, but the existing needle bed is hard contact with PCB board during detection, PCB board is easily damaged or detection needle is bent, so a kind of soft connection's fixed needle bed fixing structure for PCB board detection is needed to solve the above problems. UTILITY MODEL CONTENTS

[0004] For the above problems, the utility model provides a kind of fixed needle bed fixing structure for PCB board detection, and the problems in prior art are well solved.

[0005] In order to realize the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] A kind of fixed needle bed fixing structure for PCB board detection, including fixed plate, the upper side of fixed plate is fixedly connected with first detection plate, the upper side of first detection plate is equipped with second detection plate, multiple guide plates are equipped between first detection plate and second detection plate, multiple fixed rods and reinforcing rods are equipped between first detection plate and second detection plate, each fixed rod and reinforcing rod are all through each guide plate, the fixed rod and reinforcing rod are cooperatively formed into the structure that guide plate is fixed relative to first detection plate and second detection plate, multiple soft connection mechanisms for connecting fixed plate are provided on the fixed plate.

[0007] Preferably, the fixed rod includes multiple fixed blocks with different diameters, and each two adjacent fixed blocks are detachably connected by threads, and the outer side of the lower part of each fixed block is provided with a rubber block.

[0008] Preferably, a soft pad is provided between the fixed plate and the first detection plate.

[0009] Preferably, the soft connection mechanism includes a connecting rod and a support block, multiple connecting grooves are provided on the fixed plate, one end of the connecting rod is fixedly connected with the inner side wall of the connecting groove, the support block is fixedly connected with the movable end of the connecting rod, and a fixing hole is formed in the middle part of the connecting rod and the support block.

[0010] Preferably, the thickness of the connecting rod is less than the depth of the connecting groove, and the lower side of the supporting block passes through the fixing plate to support the fixing plate.

[0011] Preferably, the lower side of the fixing plate is fixedly connected with a reinforcing plate.

[0012] Preferably, the upper side of the fixing plate is symmetrically provided with a plurality of positioning holes in front and back, and the upper side of the fixing plate is provided with a plurality of directional holes.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model has a plurality of guide plates, and the detection needle is horizontally offset by each layer of guide plates, thereby adapting to the detection requirements of the detection instrument without affecting the detection quality of the detection needle.

[0015] 2. The utility model has a fixing rod and a reinforcing rod, the fixing rod can conveniently assemble the plurality of guide plates, and the staff can conveniently install and operate; the reinforcing rod can resist the horizontal offset moment between different guide plates caused by the detection needle, thereby making the detection result of the device more stable. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model.

[0017] Figure 2 It is the explosion structure schematic diagram of the fixing plate and the reinforcing plate in the utility model.

[0018] Figure 3 It is the structure schematic diagram of the soft connection mechanism in the utility model.

[0019] Figure 4 It is the position schematic diagram of the fixing block in the utility model.

[0020] In the drawing: 1, fixing plate;2, first detection plate;3, second detection plate;4, guide plate;5, fixing rod;6, reinforcing rod;7, soft connection mechanism;8, fixing block;9, rubber stopper;10, soft pad;11, connecting rod;12, supporting block;13, connecting groove;14, fixing hole;15, reinforcing plate;16, positioning hole;17, directional hole. DETAILED DESCRIPTION

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] The following is in conjunction with the appendix Figures 1-4 The specific embodiments of this utility model will be described in further detail.

[0023] Depend on Figures 1-4 As shown, this utility model includes a fixing plate 1. In order to better fix the detection needle, a first detection plate 2 is fixedly connected to the upper side of the fixing plate 1. A second detection plate 3 is provided on the upper side of the first detection plate 2. Multiple guide plates 4 are provided between the first detection plate 2 and the second detection plate 3. Multiple fixing rods 5 and reinforcing rods 6 are provided between the first detection plate 2 and the second detection plate 3. Each fixing rod 5 and reinforcing rod 6 passes through each guide plate 4. The fixing rods 5 and reinforcing rods 6 work together to form a structure in which the guide plate 4 is fixed relative to the first detection plate 2 and the second detection plate 3. Multiple soft connection mechanisms 7 are provided on the fixing plate 1 for connecting the fixing plate 1.

[0024] It should be noted that multiple detection pins are commonly installed on the first detection plate 2, the second detection plate 3, and the multiple guide plates 4. The detection pins are evenly arranged on the upper side of the second detection plate 3 for connecting with the contacts of the PCB board. Under the action of the multiple guide plates 4, each layer of guide plate 4 laterally shifts the corresponding detection pin, so that when the detection pin reaches the lower side of the first detection plate 2, it can contact the detection contact of the testing instrument. The fixing rod 5 facilitates the assembly of the multiple guide plates 4, making it convenient for operators to install and operate. The reinforcing rod 6 can counteract the lateral offset torque between different guide plates 4 caused by the detection pins, thereby making the detection results of the device more stable.

[0025] In this embodiment, there are six guide plates 4. The six guide plates 4, together with the first detection plate 2 and the second detection plate 3, form an eight-layer structure, which is used to horizontally offset the detection needle, thereby increasing its offset distance without damaging the detection needle.

[0026] In use, the fixing plate 1 can be fixed to the PCB board inspection instrument through the flexible connection mechanism 7, and then the PCB board can be placed on the second inspection plate 3. The defects of the PCB board can be detected by the inspection on the second inspection plate 3.

[0027] Furthermore, by Figures 1-4As shown, in order to facilitate the assembly of the device, the fixing rod 5 comprises a plurality of fixing blocks 8 with different diameters, the lower part of the lowermost fixing block 8 is threadedly connected with the fixing plate 1, every two adjacent fixing blocks 8 are threadedly detachably connected, and the outer side of the lower part of each fixing block 8 is provided with a rubber stopper 9 which is fixedly connected with the corresponding fixing hole 14;

[0028] It should be noted that the guiding plate 4, the first detection plate 2 and the second detection plate 3 are provided with through holes corresponding to the positions of each fixing rod 5, the inner diameter of the through hole is matched with the outer diameter of the corresponding fixing block 8, the guiding plate 4 can be clamped and fixed through the thread connection between the adjacent fixing blocks 8, and under the action of the rubber stopper 9, the guiding plate 4 can be protected to a certain extent and the effect of preventing the loosening of the thread connection can be achieved.

[0029] Further, by Figures 1-4 As shown, in order to increase the service life of the device, a soft pad 10 is arranged between the fixing plate 1 and the first detection plate 2;

[0030] When in use, the soft pad 10 can reduce the damage caused by the friction between the first detection plate 2 and the fixing plate 1 when the first detection plate 2 is fixed between the fixing plate 1 through the corresponding fixing block 8.

[0031] Further, by Figures 1-4 As shown, in order to protect the PCB during detection, the soft connection mechanism 7 comprises a connecting rod 11 and a supporting block 12, the fixing plate 1 is provided with a plurality of connecting grooves 13, one end of the connecting rod 11 is fixedly connected with the inner side wall of the connecting groove 13, the supporting block 12 is fixedly connected with the movable end of the connecting rod 11, and the middle part of the connecting rod 11 and the supporting block 12 are jointly provided with a fixing hole 14; the fixing plate 1 is connected with the PCB detection instrument through the fixing hole 14;

[0032] Further, by Figure 1 One Figure 4 As shown, in order to achieve better detection accuracy, the connecting rod 11 is made of one or more of plastic, glass fiber and epoxy resin and can be elastically deformed; the thickness of the connecting rod 11 is smaller than the depth of the connecting groove 13, and the connecting rod 11 will be deformed during the detection process, thereby reducing the pressure between the PCB and the detection needle on the upper side of the second detection plate 3, and the lower side of the supporting block 12 passes through the fixing plate 1 to support the fixing plate 1;

[0033] It should be noted that in the embodiment, the number of the soft connection mechanisms 7 is six, which are uniformly distributed around the fixing plate 1;

[0034] During use, as the PCB board is brought into contact with the second detection board 3 by the robotic arm, the robotic arm will inevitably push the PCB board downwards toward the second detection board 3. At this time, the soft connection mechanism 7 can protect the PCB board and the detection pins on the second detection board 3, reducing the probability of the detection pins bending or the PCB board being damaged due to excessive force.

[0035] Furthermore, by Figure 1 one Figure 4 As shown, in order to adjust the bending strength of the flexible connection, a reinforcing plate 15 is fixedly connected to the lower side of the fixing plate 1;

[0036] In use, the maximum deformation of the connecting rod 11 can be controlled by adjusting the thickness of the reinforcing plate 15.

[0037] Furthermore, by Figure 1 one Figure 4 As shown, in order to facilitate installation and testing, multiple positioning holes 16 are symmetrically provided on the upper side of the fixing plate 1, and multiple orientation holes 17 are provided on the upper side of the fixing plate 1.

[0038] In use, the fixing plate 1 can be easily installed through the positioning hole 16, and the installation direction of the device can be easily determined through the orientation hole 17.

[0039] It should be further explained that multiple clamping grooves are provided around the fixed plate 1, and a chamfer is provided at one corner of the fixed plate 1 for secondary determination of the orientation of the fixed plate 1.

[0040] In use, the fixing plate 1 can be fixed to the PCB board inspection instrument via the flexible connection mechanism 7. Then, the PCB board can be placed on the second inspection plate 3. The defects of the PCB board are detected by the detection pins on the second inspection plate 3. During the process of the PCB board being attached to the second inspection plate 3 by the robot arm, the robot arm will inevitably push the PCB board downwards towards the second inspection plate 3. At this time, the flexible connection mechanism 7 can protect the PCB board and the detection pins on the second inspection plate 3, reducing the probability of the detection pins bending or the PCB board being damaged due to excessive force.

[0041] This utility model features a novel structure, ingenious design, and simple and convenient operation. Through this design, it effectively achieves the purpose of better fixing the detection probe, facilitates the assembly of the device, increases the service life of the device, protects the PCB board during testing, achieves better detection accuracy, and facilitates installation and testing.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fixed needle bed fixing structure for PCB board inspection, comprising a fixing plate, characterized in that: A first detection plate is fixedly connected to the upper side of the fixed plate, and a second detection plate is provided on the upper side of the first detection plate. Multiple guide plates are provided between the first detection plate and the second detection plate. Multiple fixing rods and reinforcing rods are provided between the first detection plate and the second detection plate. Each fixing rod and reinforcing rod passes through each guide plate. The fixing rods and reinforcing rods cooperate to form a structure in which the guide plate is fixed relative to the first detection plate and the second detection plate. Multiple soft connection mechanisms for connecting the fixed plate are provided on the fixed plate.

2. The fixing structure for a fixed needle bed for PCB board inspection according to claim 1, characterized in that: The fixing rod includes multiple fixing blocks of different diameters. Each pair of adjacent fixing blocks are detachably connected by threads, and each fixing block has a rubber stop on the outer side of its lower part.

3. The fixing structure for a fixed needle bed for PCB board inspection according to claim 1, characterized in that: A soft pad is provided between the fixing plate and the first detection plate.

4. The fixing structure for a PCB board inspection bed according to claim 1, characterized in that: The flexible connection mechanism includes a connecting rod and a support block. The fixing plate has multiple connecting slots. One end of the connecting rod is fixedly connected to the inner wall of the connecting slot. The support block is fixedly connected to the movable end of the connecting rod. The connecting rod and the support block have a fixing hole in their middle parts.

5. The fixing structure for a PCB board inspection pin bed according to claim 4, characterized in that: The thickness of the connecting rod is less than the depth of the connecting groove, and the lower side of the support block passes through the fixing plate to support the fixing plate.

6. The fixing structure for a PCB board inspection bed according to claim 1, characterized in that: A reinforcing plate is fixedly connected to the lower side of the fixing plate.

7. The fixing structure for a fixed needle bed for PCB board inspection according to claim 1, characterized in that: The upper side of the fixing plate has multiple positioning holes symmetrically opened at the front and back, and the upper side of the fixing plate has multiple orientation holes.

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