A heat sink thickness measuring device

Abstract

This invention discloses a heat sink thickness measuring device, relating to the field of thickness measurement technology. It includes a base, with mounting plates fixed to the front and rear sides of the upper end of the base. A single-sided distance measuring component is disposed on each side between the two mounting plates. Each single-sided distance measuring component includes a guide rod fixed along the front-rear direction between the two mounting plates; a lead screw is parallel to the outside of the guide rod; the end of the lead screw is rotatably connected to a corresponding mounting plate; the lead screw is driven by a reduction motor connected to one side of the mounting plate; a reference plate is slidably connected to the guide rod; the reference plate is vertically positioned; the reference plate and the lead screw are connected by a connector; rotation of the lead screw causes the reference plate to slide along the length of the guide rod. The advantages of this invention are: it can calculate the distance measurement value as a thickness value, has high measurement accuracy, and is convenient to use.

Description

Technical Field

[0001] This invention relates to the field of thickness measurement technology, and in particular to a heat sink thickness measuring device. Background Technology

[0002] A heat sink is a device used to dissipate heat from electronic components in electrical appliances that are prone to overheating. They are usually made of aluminum alloy, brass, or bronze. They are typically mass-produced and then assembled into a single unit for use.

[0003] To ensure effective heat dissipation, the thickness of the heat sink needs to meet certain specifications. Therefore, it is usually necessary to make heat sink samples in advance and measure their thickness until the produced samples consistently meet the thickness requirements before proceeding with normal mass production. However, current measurements are typically done using tools such as calipers, which are more suitable for measuring length. When measuring the thickness of heat sinks, due to their small size, the accuracy of the measurement is often insufficient. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a heat sink thickness measuring device that can calculate the measured distance value as the thickness value, which has high measurement accuracy and is easy to use.

[0005] The technical solution adopted in this invention is: to provide a heat sink thickness measuring device, including a base, mounting plates fixed on the front and rear sides of the upper end of the base respectively, and a single-sided distance measuring component provided on the left and right sides between the two mounting plates; The single-sided ranging assembly includes a guide rod fixed between two mounting plates along the front-to-back direction; a lead screw is provided parallel to the outside of the guide rod; the end of the lead screw is rotatably connected to the mounting plate; the lead screw is driven by a geared motor connected to one side of the mounting plate; a reference plate is slidably connected to the guide rod; the reference plate is vertically positioned; the reference plate and the lead screw are connected by a connector; rotation of the lead screw causes the reference plate to slide along the length of the guide rod; the single-sided ranging assembly also includes a ranging sensor fixed to one side of the mounting plate; the ranging sensor is used to measure the vertical distance from itself to the reference plate; The reference plates on the two single-sided ranging components are used to clamp the heat sink; the end face of the ranging sensor is the end of the reference plate that is attached to the heat sink; a processor is connected to the base; the processor is used to calculate the distance value measured by the two ranging sensors as the thickness value of the heat sink.

[0006] To further optimize this technical solution, a connector for a heat sink thickness measuring device includes a sleeve threaded onto a lead screw; a reference plate slidably sleeved on the outside of the sleeve; a retaining ring fixedly sleeved on one end of the sleeve away from the heat sink; a compression spring sleeved on the outside of the sleeve; and the compression spring connected between the retaining ring and the reference plate.

[0007] To further optimize this technical solution, a pressure sensor is connected to the side of the retaining ring of a heat sink thickness measuring device near the compression spring; the pressure sensor and the geared motor are respectively connected to a processor; the processor is used to control the start and stop of the geared motor according to the pressure value detected by the pressure sensor.

[0008] To further optimize this technical solution, a display screen is also connected to the base of a heat sink thickness measuring device; the display screen is connected to the processor; the display screen is used to display the thickness value of the heat sink.

[0009] To further optimize this technical solution, a flat pressure plate and a reference photo are connected to one end of a reference plate near the heat sink in a heat sink thickness measuring device; the reference photo corresponds to a distance measuring sensor; the vertical distance from the distance measuring sensor to the outer end face of the reference photo is consistent with the vertical distance from the distance measuring sensor to the outer end face of the flat pressure plate.

[0010] To further optimize this technical solution, a sliding groove is formed on the upper end of the base plate of a heat sink thickness measuring device along the front-back direction; a reinforcing strip is fixed on the side of the reference plate away from the heat sink; the lower end of the reinforcing strip is slidably connected to the sliding groove.

[0011] The beneficial effects of this invention are as follows: A geared motor drives a lead screw to rotate slowly. Guided by a guide rod, the reference plate slides along the length of the guide rod. By adjusting the sliding of the reference plates on both sides, the heat sink to be measured can be clamped. A distance sensor measures the vertical distance from itself to the reference plate. The end face of the distance sensor is the end of the reference plate that is attached to the heat sink. By summing the distance values ​​measured by the two distance sensors and subtracting the distance between the two distance sensors, the thickness of the heat sink can be obtained. This transforms thickness measurement into distance measurement, reducing measurement error and improving measurement accuracy. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a structural diagram of the connector.

[0013] In the diagram, 1. Base; 2. Mounting plate; 3. Guide rod; 4. Lead screw; 5. Gear motor; 6. Base plate; 7. Distance sensor; 8. Processor; 9. Sleeve; 10. Retaining ring; 11. Compression spring; 12. Pressure sensor; 13. Display screen; 14. Flat pressure plate; 15. Reference photo; 16. Slide groove; 17. Reinforcing strip. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] like Figure 1As shown, a heat sink thickness measuring device includes a base 1, with mounting plates 2 fixed on the front and rear sides of the upper end of the base 1, and single-sided distance measuring components provided on the left and right sides between the two mounting plates 2. The single-sided ranging assembly includes a guide rod 3 fixed between two mounting plates 2 along the front-to-back direction; a lead screw 4 is provided parallel to the outside of the guide rod 3; the end of the lead screw 4 is rotatably connected to the mounting plate 2; the lead screw 4 is driven by a reduction motor 5 connected to one side of the mounting plate 2; a reference plate 6 is slidably connected to the guide rod 3; the reference plate 6 is set vertically; the reference plate 6 and the lead screw 4 are connected by a connector; the rotation of the lead screw 4 is used to make the reference plate 6 slide along the length of the guide rod 3; the single-sided ranging assembly also includes a ranging sensor 7 fixed to one side of the mounting plate 2; the ranging sensor 7 is used to measure the vertical distance from itself to the reference plate 6; The reference plates 6 on the two single-sided ranging components are used to clamp the heat sink; the end face measured by the ranging sensor 7 is the end of the reference plate 6 that is attached to the heat sink; the base 1 is connected to the processor 8; the processor 8 is used to calculate the distance value measured by the two ranging sensors 7 as the thickness value of the heat sink.

[0016] In this method, when measuring the thickness of the heat sink, the heat sink is placed between two reference plates 6 on both sides. Then, the reduction motors 5 are started to drive the corresponding lead screws 4 to rotate slowly, causing the two reference plates 6 to gradually move closer until the heat sink is tightly clamped. Then, two distance sensors 7 are used to measure the vertical distance on the corresponding reference plate 6 at the end where the heat sink is attached. The thickness of the heat sink is obtained by summing the distances measured by the two distance sensors 7 and subtracting the distance between the two distance sensors 7 (which is a fixed value).

[0017] Since the heat sink itself is relatively thin, directly measuring the thickness is not only inconvenient but also prone to causing deviations in the measurement points, affecting the accuracy of the measurement. Therefore, in this solution, by converting the thickness measurement into a distance measurement, the measurement operation is convenient and less prone to errors, which can reduce measurement errors and ensure measurement accuracy.

[0018] In addition, the ranging sensor 7 has a wide range of applications and many types (ultrasonic ranging, infrared ranging, microwave radar ranging, etc.). It is technologically mature and inexpensive. Compared with dedicated detectors for measuring thickness, it can significantly reduce costs and is easier to promote and apply.

[0019] like Figure 1-2 As shown, the connecting component includes a sleeve 9 threaded onto the lead screw 4; a reference plate 6 slidably sleeved on the outside of the sleeve 9; a retaining ring 10 is fixedly sleeved on one end of the sleeve 9 away from the heat sink; a compression spring 11 is sleeved on the outside of the sleeve 9; the compression spring 11 is connected between the retaining ring 10 and the reference plate 6.

[0020] To ensure accurate measurement of the heat sink thickness, the two reference plates 6 must clamp the heat sink tightly, meaning the reference plates 6 must exert sufficient pressure on the heat sink. Therefore, the reference plates 6 are slidably fitted onto the sleeve 9. After the reference plates 6 contact the heat sink, the lead screw 4 continues to rotate, driving the sleeve 9 forward. This allows the retaining ring 10 to advance, gradually compressing the compression spring 11. The compression spring 11 then applies increasing pressure to the reference plates 6, ensuring sufficient pressure on the heat sink.

[0021] like Figure 2 As shown, a pressure sensor 12 is connected to the side of the retaining ring 10 near the compression spring 11; the pressure sensor 12 and the geared motor 5 are respectively connected to the processor 8; the processor 8 is used to control the start and stop of the geared motor 5 according to the pressure value detected by the pressure sensor 12.

[0022] The pressure sensor 12 detects the pressure on the spring 11, thus reflecting the pressure applied by the reference plate 6 to the heat sink. This pressure is detected because, while a tight contact between the reference plate 6 and the heat sink is necessary for measurement accuracy, excessive pressure can cause slight deformation of the heat sink or the reference plate 6. If high precision is required for the heat sink thickness, this deformation may affect its quality. To avoid this problem, the pressure sensor 12 detects the applied pressure and presets a maximum pressure value (set after testing based on actual conditions). Once this value is reached, the reduction motor 5 stops, ensuring the effective pressure application from the reference plate 6 while preventing excessive pressure.

[0023] like Figure 1 As shown, a display screen 13 is also connected to the base 1; the display screen 13 is connected to the processor 8; the display screen 13 is used to display the thickness value of the heat sink. The display screen 13 is configured to directly observe the thickness value of the heat sink and quickly determine whether it meets the required production specifications.

[0024] like Figure 1-2 As shown, a flat pressure plate 14 and a reference photograph 15 are connected to one end of the reference plate 6 near the heat sink; the reference photograph 15 corresponds to the distance measuring sensor 7; the vertical distance from the distance measuring sensor 7 to the outer end face of the reference photograph 15 is the same as the vertical distance from the distance measuring sensor 7 to the outer end face of the flat pressure plate 14. The flat pressure plate 14 can fit against the heat sink, and the arrangement of the flat pressure plate 14 and the reference photograph 15 can further improve the accuracy of heat sink thickness measurement.

[0025] like Figure 1As shown, a groove 16 is formed on the upper end of the base plate along the front-to-back direction; a reinforcing strip 17 is fixed on the side of the reference plate 6 away from the heat sink; the lower end of the reinforcing strip 17 is slidably connected to the groove 16. By sliding the reinforcing strip 17 and the groove 16, the strength of the reference plate 6 can be increased without affecting the position adjustment of the reference plate 6, ensuring the durability of long-term measurement.

[0026] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A heat sink thickness measuring device, comprising a base (1), wherein mounting plates (2) are fixed on the front and rear sides of the upper end of the base (1), characterized in that: A single-sided ranging component is provided on the left and right sides between the two mounting plates (2); The single-sided ranging assembly includes a guide rod (3) fixed between two mounting plates (2) along the front-back direction; a lead screw (4) is provided parallel to the outside of the guide rod (3); the end of the lead screw (4) is rotatably connected to the mounting plate (2); the lead screw (4) is driven by a reduction motor (5) connected to one side of the mounting plate (2); a reference plate (6) is slidably connected to the guide rod (3); the reference plate (6) is set vertically; the reference plate (6) and the lead screw (4) are connected by a connector; the rotation of the lead screw (4) is used to make the reference plate (6) slide along the length of the guide rod (3); the single-sided ranging assembly also includes a ranging sensor (7) fixed to one side of the mounting plate (2); the ranging sensor (7) is used to measure the vertical distance from itself to the reference plate (6); The reference plate (6) on the two single-sided ranging components is used to clamp the heat sink; the end face measured by the ranging sensor (7) is the end of the reference plate (6) that is attached to the heat sink; the base (1) is connected to the processor (8); the processor (8) is used to calculate the distance value measured by the two ranging sensors (7) as the thickness value of the heat sink.

2. The heat sink thickness measuring device according to claim 1, characterized in that: The connector includes a sleeve (9) threaded onto a lead screw (4); a reference plate (6) is slidably sleeved on the outside of the sleeve (9); a retaining ring (10) is sleeved and fixed on one end of the sleeve (9) away from the heat sink; a compression spring (11) is sleeved on the outside of the sleeve (9); the compression spring (11) is connected between the retaining ring (10) and the reference plate (6).

3. The heat sink thickness measuring device according to claim 2, characterized in that: A pressure sensor (12) is connected to the side of the retaining ring (10) near the compression spring (11); the pressure sensor (12) and the geared motor (5) are respectively connected to the processor (8); the processor (8) is used to control the start and stop of the geared motor (5) according to the pressure value detected by the pressure sensor (12).

4. The heat sink thickness measuring device according to claim 1, characterized in that: The base (1) is also connected to a display screen (13); the display screen (13) is connected to the processor (8); the display screen (13) is used to display the thickness value of the heat sink.

5. The heat sink thickness measuring device according to claim 1, characterized in that: A flat plate (14) and a reference photo (15) are connected to one end of the reference plate (6) near the heat sink; the reference photo (15) corresponds to the distance sensor (7); the vertical distance from the distance sensor (7) to the outer end face of the reference photo (15) is the same as the vertical distance from the distance sensor (7) to the outer end face of the flat plate (14).

6. The heat sink thickness measuring device according to claim 1, characterized in that: The upper end of the base plate has a sliding groove (16) along the front-back direction; a reinforcing strip (17) is fixed on the side of the reference plate (6) away from the heat sink; the lower end of the reinforcing strip (17) is slidably connected to the sliding groove (16).

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