A small force value pressure sensor detection device with an adjustable positioning calibration assembly

Abstract

The utility model relates to pressure sensor detection technical field discloses a small force value pressure sensor detection device with adjustable positioning calibration subassembly, including mounting panel, the upper surface fixedly connected with adjusting frame of mounting panel, the front and back of adjusting frame all are established with adjusting mouth, the inside of adjusting frame and the inside of two adjusting mouths are connected with adjusting seat who slides together, the upper surface of the front and back two sides of adjusting frame is established with a plurality of positioning holes, the device passes through adjusting frame, adjusting seat, positioning hole, positioning groove and locating rod, adjusting seat can realize linear direction adjustment along the adjusting mouth of adjusting frame, and the locating rod penetrates positioning hole and is clamped into positioning groove after sliding in place, and the first magnet in positioning groove and the second magnet at the bottom end of locating rod are mutually adsorbed and reinforce, can satisfy multidirectional linear adjustment demand, can also eliminate the clearance of traditional bolt and the sliding fit of the holder, avoid the problem of the positioning precision deficiency caused by the fit clearance.

Description

Technical Field

[0001] This utility model relates to the field of pressure sensor detection technology, and more specifically, it relates to a small force pressure sensor detection device with an adjustable positioning calibration component. Background Technology

[0002] As a core component that converts pressure signals into measurable electrical signals, pressure sensors are increasingly demanding in low-force detection scenarios (such as micro-component assembly force monitoring and biomechanical pressure testing) in fields like precision manufacturing, medical instruments, and aerospace. Such tests require specialized testing equipment, and the installation and positioning accuracy of the pressure sensor directly determines the accuracy of pressure signal acquisition. This requires not only precise alignment of the sensor's pressure sensing end with the force-applying mechanism of the testing equipment (such as a micro-force probe or pressure output interface) in a straight line (e.g., front-back or left-right), but also often adjustment of the sensor's angle (e.g., tilt angle around the sensing end or rotation angle around its own axis) according to the testing scenario. This ensures that the direction of pressure application is completely consistent with the sensor's sensitive axis, avoiding signal attenuation or distortion due to angular deviations, and ultimately guaranteeing the reliability of low-force pressure data.

[0003] Existing pressure sensors often come equipped with positioning and calibration structures, but these structures cannot meet multi-directional adjustment requirements and are difficult to guarantee accuracy and stability. Most current positioning structures generally use a combination of bolts and a fixing bracket, which only allows for linear adjustment of the sensor along a single guide rail (e.g., left-right or forward-backward), completely lacking angle adjustment capabilities. If the detection scenario requires adjusting the sensor's tilt angle to match the angle of the force-applying mechanism, the operator must disassemble the sensor and use external shims to raise one side of the bracket, repeatedly testing and verifying the angle. This operation is cumbersome and the angle accuracy cannot be controlled. Even for simple linear adjustment, the bolts... The sliding fit between the bolt and the holder has a natural clearance. In addition, the machining accuracy of the bolt thread is limited, and the adjustment accuracy is far from meeting the high precision requirements for sensor positioning in small force value detection. This can easily cause misalignment between the sensing end and the axis of the force application mechanism, resulting in significant errors in the detection data. At the same time, the contact area between the bolt and the holder will continuously generate friction and wear during repeated adjustments. With the increase in the frequency of use, the fit clearance will further expand, which not only causes a continuous decrease in the linear adjustment accuracy, but also requires frequent replacement of worn parts, increasing maintenance costs and reducing detection efficiency, seriously affecting the continuity and data reliability of small force value pressure detection. Utility Model Content

[0004] (a) Technical problems to be solved In view of the above situation and to overcome the defects of the prior art, this utility model provides a small force pressure sensor detection device with an adjustable positioning calibration component, which aims to solve the problems in the background art.

[0005] (II) Technical Solution To achieve the above objectives, this application provides the following technical solution: a small force pressure sensor detection device with an adjustable positioning calibration component, comprising a mounting plate, an adjustment frame fixedly connected to the upper surface of the mounting plate, adjustment ports being provided on both the front and back of the adjustment frame, an adjustment seat being slidably connected to the interior of the adjustment frame and the interior of the two adjustment ports, multiple positioning holes being provided on the upper surfaces of the front and rear sides of the adjustment frame, a positioning groove corresponding to the positioning hole being provided on the inner bottom wall of each adjustment port, two positioning rods being provided above the adjustment seat, and two sets of symmetrical support plates being fixedly connected to the upper surface of the adjustment seat, with a fixed connection between the inner wall of each support plate and the adjustment seat. The device is equipped with ball bearings. The inner rings of the four ball bearings are fixedly connected to a rotating shaft. Two rotating plates are fixedly connected to the outer surfaces of both ends of the rotating shaft. A snap-fit ​​seat is fixedly connected to the upper surface of the two rotating plates. A rubber snap-fit ​​sleeve is fixedly connected to the inner wall of the snap-fit ​​seat. A pressure sensor is snapped into the inside of the rubber snap-fit ​​sleeve. An angle sensor and a displacement sensor are fixedly connected to the outer surface of the snap-fit ​​seat, respectively. A micro motor is fixedly connected to the inner wall of the middle part of the adjusting seat below the rotating shaft. A drive shaft is fixedly connected to the output end of the micro motor. A first bevel gear and a second bevel gear are fixedly connected to the outer surface of the rotating shaft and the outer surface of the drive shaft, respectively.

[0006] The present invention is further configured such that the bottom end of each positioning rod passes through the positioning hole and the adjusting seat in sequence and extends into the interior of the positioning groove, the outer surface of each positioning rod is engaged with the interior of the positioning hole, the interior of the adjusting seat and the interior of the positioning groove, the number of each set of support plates is two, each rotating plate is located inside each set of support plates, and the outer surface of the first bevel gear meshes with the outer surface of the second bevel gear.

[0007] The present invention is further configured such that a first magnet is fixedly connected to the inner bottom wall of each positioning groove, a second magnet is fixedly connected to the bottom end of each positioning rod, and the upper surface of each first magnet is attracted to the bottom surface of the second magnet.

[0008] The present invention is further configured such that four positioning bolts are engaged with the inner wall of the mounting plate, and the four positioning bolts are distributed at the corners of the mounting plate.

[0009] The present invention is further configured such that angle observation plates are fixedly connected to the opposite sides of the two support plates, and each angle observation plate corresponds to the observation pointer at the bottom of the locking seat.

[0010] The present invention is further configured such that scale lines are etched on both the front and back of the adjustment frame, and two indicator needles are fixedly connected to the upper surface of the adjustment seat.

[0011] (III) Beneficial Effects Compared with the prior art, the beneficial effects of this utility model are: 1. Through the adjustment frame, adjustment seat, positioning hole, positioning groove and positioning rod, the adjustment seat can slide along the adjustment port of the adjustment frame to achieve linear adjustment. After sliding into place, the positioning rod passes through the positioning hole and the adjustment seat and is locked into the positioning groove. The first magnet in the positioning groove and the second magnet at the bottom of the positioning rod attract and reinforce each other. This can not only meet the needs of multi-directional linear adjustment, but also eliminate the gap of the traditional bolt and the sliding fit of the seat, avoid the problem of insufficient positioning accuracy caused by the fit gap, reduce the friction and wear of the parts, reduce maintenance costs, ensure the linear alignment accuracy of the sensor and the force application mechanism in small force detection, and prevent detection data errors. 2. The system consists of a support plate, ball bearings, a rotating shaft, a rotating plate, a micro motor, a first bevel gear, and a second bevel gear. The micro motor drives the drive shaft to rotate the second bevel gear, which in turn drives the first bevel gear and the rotating shaft to rotate. The rotating shaft, through the rotating plate, drives the locking seat and the pressure sensor angle adjustment. With the help of the angle sensor, angle observation plate, and observation pointer, the angle can be precisely controlled without disassembling the sensor pad. This solves the problems of traditional structures lacking angle adjustment function, cumbersome operation, and uncontrollable angle accuracy. It ensures that the direction of pressure application is consistent with the sensor's sensitive axis, avoiding signal attenuation or distortion caused by angle deviation, and improving the continuity and data reliability of small force pressure detection. Attached Figure Description

[0012] Figure 1 This is a three-dimensional overall structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the first magnet of this utility model; Figure 3 This is a three-dimensional structural diagram of the second magnet of this utility model; Figure 4 This is a three-dimensional structural diagram of the rubber snap-fit ​​sleeve of this utility model; Figure 5 This is a three-dimensional structural diagram of the second bevel gear of this utility model; Figure 6 This is a three-dimensional sectional view of the support plate of this utility model.

[0013] In the diagram: 1. Mounting plate; 2. Adjustment frame; 3. Positioning bolt; 4. Adjustment seat; 5. Support plate; 6. Angle sensor; 7. Displacement sensor; 8. Pressure sensor; 9. Micro motor; 10. Positioning hole; 11. Snap-fit ​​seat; 12. Rotating plate; 13. First magnet; 14. Positioning groove; 15. Scale line; 16. Adjustment port; 17. Positioning rod; 18. Second magnet; 19. Rubber snap-fit ​​sleeve; 20. Indicator needle; 21. Rotating shaft; 22. Angle observation plate; 23. First bevel gear; 24. Drive shaft; 25. Second bevel gear; 26. Ball bearing. Detailed Implementation

[0014] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0015] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0016] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0017] Please see Figures 1-6The system includes a mounting plate 1, an adjusting frame 2 fixedly connected to the upper surface of the mounting plate 1, adjusting ports 16 on both the front and back of the adjusting frame 2, and an adjusting seat 4 slidably connected to the interior of the adjusting frame 2 and the interior of the two adjusting ports 16. Multiple positioning holes 10 are provided on the upper surface of the front and rear sides of the adjusting frame 2, and a positioning groove 14 corresponding to the positioning hole 10 is provided on the inner bottom wall of each adjusting port 16. Two positioning rods 17 are provided above the adjusting seat 4. Two sets of symmetrical support plates 5 are fixedly connected to the upper surface of the adjusting seat 4, and ball bearings 26 are fixedly connected to the inner wall of each support plate 5. The inner rings of the four ball bearings 26 are fixedly connected to a rotating... Shaft 21 has two rotating plates 12 fixedly connected to the outer surfaces of both ends. The upper surfaces of the two rotating plates 12 are fixedly connected to a snap-fit ​​seat 11. A rubber snap-fit ​​sleeve 19 is fixedly connected to the inner wall of the snap-fit ​​seat 11. A pressure sensor 8 is snapped into the inside of the rubber snap-fit ​​sleeve 19. An angle sensor 6 and a displacement sensor 7 are fixedly connected to the outer surface of the snap-fit ​​seat 11, respectively. A micro motor 9 is fixedly connected to the inner wall of the middle part of the adjusting seat 4 below the rotating shaft 21. A drive shaft 24 is fixedly connected to the output end of the micro motor 9. A first bevel gear 23 and a second bevel gear 25 are fixedly connected to the outer surfaces of the rotating shaft 21 and the drive shaft 24, respectively.

[0018] Specifically, the adjusting frame 2 provides a sliding carrier for the adjusting seat 4. The adjusting seat 4 can slide along the adjusting port 16 of the adjusting frame 2 to achieve linear position adjustment of the pressure sensor 8. The positioning hole 10 on the adjusting frame 2 and the positioning groove 14 in the adjusting port 16 are used to cooperate with the positioning rod 17 to fix the position of the adjusting seat 4. The support plate 5 on the adjusting seat 4 fixes the ball bearing 26. The rotating shaft 21 fixed in the inner ring of the ball bearing 26 can rotate flexibly. The rotating shaft 21 drives the snap-fit ​​seat 11 to rotate through the rotating plate 12. The rubber snap-fit ​​sleeve 19 in the snap-fit ​​seat 11 can securely snap the pressure sensor 8 and avoid hard damage. The angle sensor 6 and displacement sensor 7 on the snap-fit ​​seat 11 can monitor the position and angle data in real time. The micro motor 9 in the adjusting seat 4 drives the second bevel gear 25 to rotate through the drive shaft 24. The second bevel gear 25 meshes with the first bevel gear 23 to drive the rotating shaft 21 to rotate and achieve angle adjustment. This cooperation can achieve bidirectional adjustment of linearity and angle, and can ensure adjustment accuracy through real-time monitoring by sensors, solving the problems of single adjustment and low accuracy of traditional structures.

[0019] Please see Figures 1-6 The bottom end of each positioning rod 17 passes through the positioning hole 10 and the adjusting seat 4 in sequence and extends into the interior of the positioning groove 14. The outer surface of each positioning rod 17 is engaged with the interior of the positioning hole 10, the interior of the adjusting seat 4 and the interior of the positioning groove 14. There are two support plates 5 in each group. Each rotating plate 12 is located inside each support plate 5. The outer surface of the first bevel gear 23 meshes with the outer surface of the second bevel gear 25.

[0020] Specifically, the bottom end of the positioning rod 17 passes through the positioning hole 10 and the adjusting seat 4 in sequence and is engaged with the positioning groove 14. Through the tight engagement of the positioning rod 17 with the positioning hole 10, the adjusting seat 4 and the positioning groove 14, the adjusting seat 4 can be stably fixed in the target position of the adjusting frame 2, preventing displacement after adjustment. Each set of two support plates 5 forms a limit on the rotating plate 12, so that the rotating plate 12 rotates stably inside the support plate 5. The meshing of the first bevel gear 23 and the second bevel gear 25 ensures that the power of the micro motor 9 can be stably transmitted to the rotating shaft 21, ensuring the smoothness and stability of angle adjustment, and solving the problems of easy loosening and unstable power transmission of traditional bolt fixing.

[0021] Please see Figures 1-6 Each positioning groove 14 has a first magnet 13 fixedly connected to its inner bottom wall, and each positioning rod 17 has a second magnet 18 fixedly connected to its bottom end. The upper surface of each first magnet 13 is attracted to the bottom surface of the second magnet 18.

[0022] Specifically, the first magnet 13 in the positioning groove 14 and the second magnet 18 at the bottom of the positioning rod 17 attract each other, which further enhances the connection stability on the basis of the positioning rod 17 being snapped and fixed, preventing the positioning rod 17 from loosening due to vibration. At the same time, the attraction force can help the positioning rod 17 to accurately snap into the positioning groove 14, improve the convenience of adjustment and positioning, and solve the problems of traditional snap-fit ​​structures being easily loosened by vibration and difficult to align.

[0023] Please see Figures 1-6 The inner wall of the mounting plate 1 is fitted with four positioning bolts 3, which are distributed at the corners of the mounting plate 1. Angle observation plates 22 are fixedly connected to the two support plates 5 on opposite sides. Each angle observation plate 22 corresponds to the observation pointer at the bottom of the mounting base 11.

[0024] Specifically, the device can be securely installed on the testing equipment by using the four positioning bolts 3 on the corner of the mounting plate 1, avoiding overall displacement of the device and affecting the testing accuracy. The angle observation plate 22 on the support plate 5 cooperates with the observation pointer at the bottom of the clamping seat 11. The operator can intuitively judge the angle status of the pressure sensor 8 by observing the position of the observation pointer on the angle observation plate 22. Together with the angle sensor 6, the angle can be dually monitored and calibrated, solving the problems of traditional angle adjustment without intuitive observation means and unstable device installation.

[0025] Please see Figures 1-6 The front and back of the adjustment frame 2 are engraved with scale lines 15, and two indicator needles 20 are fixedly connected to the upper surface of the adjustment seat 4.

[0026] Specifically, by cooperating with the scale line 15 on the adjustment frame 2 and the indicator needle 20 on the adjustment seat 4, the operator can accurately judge the linear movement distance of the adjustment seat 4 by the value pointed to by the indicator needle 20 on the scale line 15, thereby realizing the quantitative adjustment of the linear position of the pressure sensor 8, avoiding the problem of traditional linear adjustment relying on experience and having uncontrollable precision, and ensuring the accuracy and consistency of linear adjustment.

[0027] Working principle: In use, firstly, securely install the entire device at the designated position on the testing equipment using the four positioning bolts 3 on the corners of the mounting plate 1. Then, insert the pressure sensor 8 into the rubber retaining sleeve 19 inside the retaining seat 11. The rubber retaining sleeve 19 prevents direct hard contact between the pressure sensor 8 and the retaining seat 11, thus avoiding damage and ensuring a stable fixation. Next, adjust the linear position according to the testing requirements by pushing the adjusting seat 4 along the adjusting port 16 of the adjusting frame 2. During this process, the scale line 15 on the adjusting frame 2 and the indicator needle 20 on the adjusting seat 4 are used to accurately determine the adjustment distance. After adjusting to the target position, insert the bottom end of the positioning rod 17 through the positioning hole 10 of the adjusting frame 2 and the adjusting seat 4, and into the positioning groove 14 on the bottom wall of the adjusting port 16. The first magnet 13 in the positioning groove 14 and the second magnet 18 at the bottom end of the positioning rod 17 attract each other, further enhancing the fixing effect and preventing the adjusting seat 4 from shifting. If angle adjustment is required, activate the adjusting seat 4... The micro motor 9 drives the second bevel gear 25 to rotate via the drive shaft 24. The second bevel gear 25 meshes with the first bevel gear 23 on the outer surface of the rotating shaft 21, causing the rotating shaft 21 to rotate flexibly within the ball bearing 26 on the support plate 5. The rotating shaft 21 drives the locking seat 11 and the pressure sensor 8 to rotate synchronously via the rotating plates 12 at both ends. During the adjustment process, the angle sensor 6 on the locking seat 11 monitors the angle data in real time. At the same time, the angle observation plate 22 on the support plate 5 and the observation pointer at the bottom of the locking seat 11 are used to visually judge the angle status, ensuring accurate angle adjustment. During the detection process, the displacement sensor 7 on the locking seat 11 monitors the position change in real time, ensuring the stability of the pressure sensor 8 during the detection process. This achieves accurate adjustment and stable fixation of the pressure sensor 8 in terms of line and angle, effectively solving the problems of single adjustment, low accuracy, and easy loosening of traditional structures, and ensuring the accuracy and reliability of small force pressure detection.

[0028] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A small force pressure sensor detection device with adjustable positioning calibration components, comprising a mounting plate (1), characterized in that: An adjustment frame (2) is fixedly connected to the upper surface of the mounting plate (1). An adjustment port (16) is provided on both the front and back of the adjustment frame (2). An adjustment seat (4) is slidably connected to the interior of the adjustment frame (2) and the interior of the two adjustment ports (16). Multiple positioning holes (10) are provided on the upper surface of the front and rear sides of the adjustment frame (2). A positioning groove (14) corresponding to the positioning hole (10) is provided on the inner bottom wall of each adjustment port (16). Two positioning rods (17) are provided above the adjustment seat (4). Two sets of symmetrical support plates (5) are fixedly connected to the upper surface of the adjustment seat (4). A ball bearing (26) is fixedly connected to the inner wall of each support plate (5). A rotating shaft (21) is fixedly connected to the inner rings of the four ball bearings (26). Two rotating plates (12) are fixedly connected to the outer surfaces of both ends of the rotating shaft (21). A snap-fit ​​seat (11) is fixedly connected to the upper surface of the two rotating plates (12). A rubber snap-fit ​​sleeve (19) is fixedly connected to the inner wall of the snap-fit ​​seat (11). A pressure sensor (8) is snapped into the inside of the rubber snap-fit ​​sleeve (19). An angle sensor (6) and a displacement sensor (7) are fixedly connected to the outer surface of the snap-fit ​​seat (11). A micro motor (9) is fixedly connected to the inner wall of the middle part of the adjusting seat (4) below the rotating shaft (21). A drive shaft (24) is fixedly connected to the output end of the micro motor (9). A first bevel gear (23) and a second bevel gear (25) are fixedly connected to the outer surface of the rotating shaft (21) and the outer surface of the drive shaft (24) respectively.

2. The small force pressure sensor detection device with adjustable positioning calibration component according to claim 1, characterized in that: The bottom end of each positioning rod (17) passes through the positioning hole (10) and the adjusting seat (4) in sequence and extends into the interior of the positioning groove (14). The outer surface of each positioning rod (17) is engaged with the interior of the positioning hole (10), the interior of the adjusting seat (4) and the interior of the positioning groove (14). There are two support plates (5) in each group. Each rotating plate (12) is located inside each support plate (5). The outer surface of the first bevel gear (23) meshes with the outer surface of the second bevel gear (25).

3. The small force pressure sensor detection device with adjustable positioning calibration component according to claim 1, characterized in that: Each of the positioning grooves (14) has a first magnet (13) fixedly connected to its inner bottom wall, and each of the positioning rods (17) has a second magnet (18) fixedly connected to its bottom end. The upper surface of each of the first magnets (13) is attracted to the bottom surface of the second magnet (18).

4. The small force pressure sensor detection device with adjustable positioning calibration component according to claim 1, characterized in that: The inner wall of the mounting plate (1) is fitted with four positioning bolts (3), which are distributed at the corners of the mounting plate (1).

5. A small force pressure sensor detection device with an adjustable positioning calibration component according to claim 1, characterized in that: Angle observation plates (22) are fixedly connected to the two support plates (5) on their opposite sides, and each angle observation plate (22) corresponds to the observation pointer at the bottom of the card holder (11).

6. The small force pressure sensor detection device with adjustable positioning calibration component according to claim 1, characterized in that: The front and back of the adjustment frame (2) are both engraved with scale lines (15), and two indicator needles (20) are fixedly connected to the upper surface of the adjustment seat (4).

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