Auxiliary measuring device and PCB depth measurer

Abstract

The embodiment of the utility model provides an auxiliary measuring device and a PCB depth measurer, and is applied to the technical field of printed circuit board manufacturing. The auxiliary measuring device comprises a mounting piece and a concave base, a first through hole is formed along the left-right symmetry axis of the concave base; the opening side of the concave groove of the concave base is the lower bottom surface of the concave base; one side, deviating from the opening of the concave groove, of the concave base is the upper bottom surface of the concave base; the lower bottom face is a plane which is perpendicular to the left-right symmetry axis and makes contact with the PCB. The upper bottom surface is connected with the mounting piece; a second through hole is formed in the mounting piece; and the mounting piece is used for relatively fixing the auxiliary measuring device and the depth measurer after the measuring end of the depth measurer sequentially extends into the second through hole and the first through hole. The auxiliary measuring device provided by the embodiment of the utility model can improve the accuracy of measuring the depth of the PCB.

Description

Technical Field

[0001] This application relates to the field of printed circuit board manufacturing technology, and in particular to an auxiliary measuring device and a PCB board depth measuring instrument. Background Technology

[0002] Printed Circuit Boards (PCBs) are crucial electronic components in the electronics industry. They serve as the support for electronic components and the carrier for their electrical interconnections. With the rapid development of integrated circuits, electronic devices are becoming smaller and smaller, while circuit wiring density and complexity are increasing. Consequently, PCBs are gradually moving towards ultra-high density and miniaturization, with ever-higher requirements for reliability.

[0003] Different depths on a PCB board can significantly impact its overall accuracy, performance, and usability. To ensure that the physical and electrical properties of the PCB board meet design requirements and improve product reliability and stability, depth measurement of the PCB board is necessary. Current technology measures depth based on the elastic retraction of the depth measuring device's measuring end. However, due to the difficulty in uniformly controlling the horizontal reference during retraction, measurement errors occur when measuring the depth at different locations on the PCB board, resulting in low measurement accuracy. Utility Model Content

[0004] The purpose of this application is to provide an auxiliary measuring device and a PCB board depth measuring instrument to improve the accuracy of measuring PCB board depth. The specific technical solution is as follows:

[0005] In a first aspect, this utility model provides an auxiliary measuring device, including a mounting component and a concave base;

[0006] A first through hole is provided along the left and right axes of symmetry of the concave base; the side of the concave groove opening of the concave base is the lower bottom surface of the concave base; the side of the concave base opposite to the concave groove opening is the upper bottom surface of the concave base; the lower bottom surface is a plane perpendicular to the left and right axes of symmetry and in contact with the PCB board; the upper bottom surface is connected to the mounting component.

[0007] The mounting component has a second through hole; the mounting component is used to fix the auxiliary measuring device relative to the depth measuring device after the measuring end of the depth measuring device is inserted into the second through hole and the first through hole in sequence.

[0008] Optionally, a pair of first threaded through holes is provided between the upper and lower bottom surfaces of the concave base; a pair of first threaded blind holes is provided on the side of the mounting component that contacts the concave base; the positions of the two holes of the first threaded through hole pair relative to the first through hole are the same as the positions of the two holes of the first threaded blind hole pair relative to the second through hole; the concave base is connected to the mounting component by screwing a first screw into the first threaded through hole pair and the first threaded blind hole pair.

[0009] Optionally, the mounting component includes a U-shaped clamping mechanism; the U-shaped clamping mechanism is located on the side of the mounting component opposite to the concave base; the two arms of the U-shaped clamping mechanism are perpendicular to the through direction of the second through hole; the opening position of the second through hole is located in the U-shaped groove of the U-shaped clamping mechanism;

[0010] The two arms of the U-shaped clamping mechanism are provided with a pair of second threaded through holes; the U-shaped clamping mechanism also includes a second screw; the mounting component is specifically used to fix the auxiliary measuring device relative to the depth measuring device when the measuring end of the depth measuring device is inserted into the second through hole and the first through hole in sequence, and the second screw of the second threaded through hole pair is screwed in and tightened.

[0011] A second aspect of this utility model provides a PCB board depth measuring device, including a depth measuring device, the depth measuring device including a display end and a measuring end, the PCB board depth measuring device further including an auxiliary measuring device; the auxiliary measuring device is fixed relative to the measuring end of the depth measuring device; the auxiliary measuring device is the device according to any one of claims 1 to 3;

[0012] The PCB board depth measuring device is used to measure the depth of the structure to be measured on the PCB board with the bottom surface of the base of the auxiliary measuring device fixed to the depth measuring device as a horizontal reference, and to display the depth through the display terminal.

[0013] The auxiliary measuring device provided in this embodiment of the utility model is installed and fixed on the measuring end of an existing depth measuring device, and provides a unified auxiliary measuring reference surface for the measurement process through the bottom surface of the concave base, ensuring the consistency of the horizontal reference in the measurement process. Thus, the depth measurement process can be carried out based on the same horizontal reference, thereby reducing measurement errors and improving the accuracy of measuring the depth of PCB boards.

[0014] The PCB board depth measuring device provided in this embodiment of the invention utilizes an auxiliary measuring device to construct an auxiliary measuring reference, thereby avoiding the problem of difficulty in unifying the horizontal measuring reference during the measurement process, reducing measurement errors, and improving the accuracy of measuring the PCB board depth. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 Exploded view of the auxiliary measuring device provided in the embodiment of this utility model;

[0017] Figure 2 A schematic diagram of the structure of the auxiliary measuring device provided in the embodiment of this utility model;

[0018] Figure 3 A schematic diagram of the PCB board depth measuring device provided in this embodiment of the utility model. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art based on this application are within the scope of protection of this application.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] As an important integrated circuit component, PCB boards are widely used in various electronic devices required for production and daily life. With the development trend of electronic devices towards lighter, smarter, and higher-performance devices, PCB boards are also developing towards ultra-high density and miniaturization.

[0022] To improve PCB board reliability and ensure product quality, PCB board inspection is essential. Existing depth measuring devices include a measuring end and a display end. The measuring end may include a rod and a retractable measuring probe relative to the rod. During depth measurement, the measuring probe is placed at the measurement position. By pressing down the depth measuring device, the measuring probe retracts, and the depth at the measurement position is determined based on the amount of retraction. This depth is then displayed on the display end.

[0023] Due to differences in manufacturing processes, materials, and design requirements, PCB board thickness and depth can vary. These parameters are important indicators for evaluating PCB board performance. Depth measuring instruments determine the depth of the measured location based on the elastic recoil of their measuring ends. However, because it is difficult to consistently control the horizontal reference for each measurement, errors occur, resulting in low measurement accuracy.

[0024] To address the aforementioned problems, this utility model provides an auxiliary measuring device, such as... Figure 1 As shown, the auxiliary measuring device may include a mounting component 12 and a concave base 11;

[0025] A first through hole is provided along the left and right symmetry axes of the concave base 11; the side of the concave groove opening of the concave base 11 is the lower bottom surface of the concave base 11; the side of the concave base 11 opposite to the concave groove opening is the upper bottom surface of the concave base 11; the lower bottom surface is a plane perpendicular to the left and right symmetry axes and in contact with the PCB board; the upper bottom surface is connected to the mounting part 12.

[0026] The mounting part 12 has a second through hole; the mounting part 12 is used to fix the auxiliary measuring device relative to the depth measuring device after the measuring end of the depth measuring device is inserted into the second through hole and the first through hole in sequence.

[0027] The auxiliary measuring device provided in this embodiment of the utility model is installed and fixed on the measuring end of an existing depth measuring device, and provides a unified auxiliary measuring reference surface for the measurement process through the lower bottom surface of the concave base 11, ensuring the consistency of the horizontal reference in the measurement process. Thus, the depth measurement process can be carried out based on the same horizontal reference, thereby reducing measurement errors and improving the accuracy of measuring the depth of PCB boards.

[0028] Reference Figure 1 The present invention provides a detailed description of the auxiliary measuring device.

[0029] The auxiliary measuring device may include a mounting component 12 and a concave base 11.

[0030] The concave base 11 of the auxiliary measuring device has a concave structure, and a first through hole 111 is provided along the left and right axes of symmetry of the concave base 11. In this embodiment of the invention, the side of the concave groove opening of the concave base 11 can be referred to as the lower bottom surface of the concave base 11; the side of the concave base 11 opposite to the concave groove opening can be referred to as the upper bottom surface of the concave base 11; wherein, the lower bottom surface is perpendicular to the left and right axes of symmetry and contacts the PCB board; the upper bottom surface contacts the mounting part 12.

[0031] In this embodiment of the present invention, a first threaded through hole pair 112 may be provided between the upper and lower bottom surfaces of the concave base 11; a first threaded blind hole pair 121 may be provided on the side of the mounting member 12 that contacts the concave base 11; the positions of the two holes of the first threaded through hole pair 112 relative to the first through hole 111 are the same as the positions of the two holes of the first threaded blind hole pair 121 relative to the second through hole 122; so as to ensure that when the first through hole 111 is aligned with the second through hole 122, the first threaded through hole pair 112 can also be aligned with the first threaded blind hole pair 121.

[0032] In this embodiment of the present invention, the two holes of the first threaded through hole pair 112 can be symmetrically opened on both sides of the first through hole 111; the first threaded blind hole pair 121 can also be symmetrically opened on both sides of the second through hole 122, thereby reducing the difficulty of mold manufacturing and processing.

[0033] The upper bottom surface of the concave base 11 is connected to the mounting member 12, which may include riveting the concave base 11 to the mounting member 12 by screwing a first screw 13 into the aligned first threaded through hole pair 112 and first threaded blind hole pair 121. A schematic diagram of the concave base 11 and mounting member 12 after connection is shown below. Figure 2 As shown.

[0034] In this embodiment of the utility model, the concave base 11, through the opening design of the concave groove, allows the operator to clearly see the contact position between the measuring end of the depth measuring device and the PCB board through the concave groove, thereby avoiding measurement errors caused by the positional shift of the measuring end relative to the measured position during measurement and improving the accuracy of depth measurement.

[0035] In this embodiment of the present invention, a U-shaped clamping mechanism 123 is provided on the side of the mounting member 12 away from the concave base 11. The opening position of the second through hole 122 opened on the mounting member 12 can be located in the U-shaped groove of the U-shaped clamping mechanism 123, and the two arms of the U-shaped clamping mechanism 123 are perpendicular to the through direction of the second through hole 122.

[0036] The two arms of the U-shaped clamping mechanism 123 are provided with a pair of second threaded through holes 1231; the centers of the two holes of the pair of second threaded through holes 1231 are located on the same straight line. The U-shaped clamping mechanism 123 also includes a second screw 1232. The mounting part 12 is specifically used to fix the auxiliary measuring device relative to the depth measuring device when the second screw 1232, which is screwed into the pair of second threaded through holes 1231, is tightened after the measuring end of the depth measuring device is sequentially inserted into the second through hole 122 and the first through hole 111.

[0037] As the second screw 1232, screwed into the second threaded through hole 1231, is tightened, the two arms of the U-shaped clamping mechanism 123 move closer together and gradually compress the outer wall of the depth measuring end extending into the second through hole 122. This increases the friction between the U-shaped clamping mechanism 123 and the outer wall of the measuring end, thus fixing the mounting part 12 relative to the depth measuring device through the U-shaped clamping mechanism 123. Since the mounting part 12 is connected to the concave base 11, it can also be said that the mounting part 12 is used to achieve relative fixation between the auxiliary measuring device and the depth measuring device.

[0038] In one possible implementation, the diameter of the second through hole 122 can be slightly larger than the diameter of the depth measuring end, for example, the diameter of the measuring end < the diameter of the second through hole ≤ 1.1 * the diameter of the measuring end. This ensures a tight fit between the second through hole and the measuring end, improving the stability of the fixation.

[0039] In another possible implementation, the diameter of the second through hole can also be larger, thereby improving compatibility with different types of depth measuring instruments while reducing the difficulty of processing.

[0040] Since the concave base 11 is fixed to the depth measuring device by connecting with the mounting part 12, there is no need to control the tightness between the first through hole 111 and the measuring end of the depth measuring device. Therefore, the diameter of the first through hole 111 only needs to be larger than the diameter of the measuring end. Furthermore, in order to reduce the influence of machining errors and improve the fault tolerance rate, the diameter of the first through hole 111 can be larger, for example, the diameter of the first through hole ≥ 1.5 * the diameter of the measuring end.

[0041] In one possible implementation, the auxiliary measuring device can have the following structure:

[0042] The upper bottom surface of the concave base is 85.0 mm long, the lower bottom surface opening is 20.0 mm long, the lower bottom surface on both sides of the opening is 32.5 mm long, the height between the upper and lower bottom surfaces of the concave base is 28.0 mm, the thickness of the concave base (i.e., the width of the upper and lower bottom surfaces of the concave base) is 15.0 mm, the depth of the concave groove is 20.0 mm, and the diameter of the first through hole is 11.0 mm.

[0043] The thickness of the mounting component, i.e. the width of the contact surface between the mounting component and the concave base, is 15.0 mm, the length of the contact surface between the mounting component and the concave base is 85.0 mm, and the diameter of the second through hole is 7.5 mm.

[0044] The auxiliary measuring device provided in this embodiment can be fixed to an existing depth measuring device and is suitable for depth measurement of circuit boards of various shapes and sizes. It provides a unified measurement benchmark for the depth measurement process and improves the accuracy of the measurement results. Furthermore, it does not require changes to the structure of the original depth measuring device, effectively reducing design costs and equipment upgrade costs.

[0045] like Figure 3 The diagram shows a schematic of a PCB board depth measuring device. The PCB board depth measuring device may include a depth measuring unit 31 and an auxiliary measuring device 32. The depth measuring unit includes a display end 311 and a measuring end 312, and the auxiliary measuring device is fixed relative to the measuring end of the depth measuring unit. The auxiliary measuring device is as described above. Figure 1 , Figure 2 The apparatus provided in the embodiments.

[0046] The PCB board depth measuring instrument is used to measure the depth of the structure to be measured on the PCB board, with the bottom surface of the base of the auxiliary measuring device fixed to the depth measuring instrument as the horizontal reference, and the depth is displayed on the display end.

[0047] The measuring end of the depth measuring device may include a rod and a measuring needle that is retractable relative to the rod. The diameter of the measuring needle can be 0.8 mm or 2.0 mm. In this embodiment of the invention, since the auxiliary measuring device is a detachable device, its position relative to the measuring end of the depth measuring device is variable. After both are fixed, when the depth measuring device is pressed down to perform measurement, if the position of the lower bottom surface of the concave base of the auxiliary measuring device is higher than the position of the lowest point of the depth measuring device when the measuring needle is retracted to its limit, then the lowest point of the depth measuring device will contact the PCB board before the reference plane provided by the auxiliary measuring device. In this case, the auxiliary measuring device obviously can no longer provide a measurement reference surface for the measurement process, resulting in measurement error.

[0048] Therefore, to ensure measurement accuracy, when fixing the auxiliary measuring device, the lower surface of the concave base of the auxiliary measuring device should not be higher than the lowest point of the depth measuring device when the measuring needle is retracted to its limit. For example, the lower surface of the concave base of the auxiliary measuring device should be on the same plane as the lowest point of the depth measuring device when the measuring needle is retracted to its limit. This ensures that the depth measurement process is based on a unified horizontal reference plane, and further ensures that the depth measurement is performed within the range, avoiding over-range measurement, reducing measurement errors, and improving measurement accuracy.

[0049] The PCB board depth measuring device provided in this embodiment of the invention utilizes an auxiliary measuring device to construct an auxiliary measuring reference, thereby avoiding the problem of difficulty in unifying the horizontal measuring reference during the measurement process, reducing measurement errors, and improving the accuracy of measuring the PCB board depth.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0051] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on its differences from other embodiments. The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and improvements made to the technical solutions of this utility model by those skilled in the art without departing from the spirit of this utility model should fall within the protection scope defined by the claims of this utility model.

Claims

1. An auxiliary measuring device, characterized in that, Includes mounting hardware and a recessed base; A first through hole is provided along the left and right axes of symmetry of the concave base; the side of the concave groove opening of the concave base is the lower bottom surface of the concave base; the side of the concave base opposite to the concave groove opening is the upper bottom surface of the concave base; the lower bottom surface is a plane perpendicular to the left and right axes of symmetry and in contact with the PCB board; the upper bottom surface is connected to the mounting component. The mounting component has a second through hole; the mounting component is used to fix the auxiliary measuring device relative to the depth measuring device after the measuring end of the depth measuring device is inserted into the second through hole and the first through hole in sequence.

2. The apparatus according to claim 1, characterized in that, A first threaded through hole pair is provided between the upper and lower bottom surfaces of the concave base; a first threaded blind hole pair is provided on the side of the mounting component that contacts the concave base; the positions of the two holes of the first threaded through hole pair relative to the first through hole are the same as the positions of the two holes of the first threaded blind hole pair relative to the second through hole; the concave base and the mounting component are connected by screwing a first screw into the first threaded through hole pair and the first threaded blind hole pair.

3. The apparatus according to claim 1, characterized in that, The mounting component includes a U-shaped clamping mechanism; the U-shaped clamping mechanism is located on the side of the mounting component opposite to the concave base; the two arms of the U-shaped clamping mechanism are perpendicular to the through direction of the second through hole; the opening position of the second through hole is located in the U-shaped groove of the U-shaped clamping mechanism; The two arms of the U-shaped clamping mechanism are provided with a pair of second threaded through holes; the U-shaped clamping mechanism also includes a second screw; the mounting component is specifically used to fix the auxiliary measuring device relative to the depth measuring device when the measuring end of the depth measuring device is inserted into the second through hole and the first through hole in sequence, and the second screw of the second threaded through hole pair is screwed in and tightened.

4. A PCB board depth measuring device, comprising a depth measuring device, the depth measuring device including a display end and a measuring end, characterized in that, The PCB board depth measuring device further includes an auxiliary measuring device; the auxiliary measuring device is fixed relative to the measuring end of the depth measuring device; the auxiliary measuring device is any one of the devices described in claims 1 to 3; The PCB board depth measuring device is used to measure the depth of the structure to be measured on the PCB board with the bottom surface of the base of the auxiliary measuring device fixed to the depth measuring device as a horizontal reference, and to display the depth through the display terminal.

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