Operating torque detection device for a handle and method of use thereof

Abstract

This invention belongs to the field of handle testing technology, and particularly relates to a handle operating torque testing device and its usage method. The testing device includes: a support platform, a clamping seat, an axial positioning seat, a drive assembly, and a pressure testing assembly. The support platform can support the entire testing device; the clamping seat is used for coaxial clamping of the handle and the axial positioning seat; one end of the axial positioning seat is provided with a positioning groove, the center of the positioning groove coincides with the center of the axial positioning seat; the drive assembly includes a rotary power source and a transmission shaft, one end of the transmission shaft is connected to the output end of the rotary power source, and the other end of the transmission shaft can be coaxially inserted into the positioning groove; the pressure testing assembly includes a swing frame, a pressure sensor, and a contact element; the swing frame is located between the rotary power source and the axial positioning seat, one end of the swing frame can rotate synchronously with the transmission shaft, one end of the pressure sensor is set on the swing frame, and the other end of the pressure sensor is close to the handle along the axial direction of the transmission shaft and connected to the contact element at the end, the end of the contact element away from the pressure sensor contacts the surface of the handle; compared with the prior art, this invention solves the problems of low axial alignment efficiency, reliance on manual experience, and insufficient batch testing efficiency in the prior art, while maintaining high accuracy of the testing results and meeting the standardized testing needs of the lock industry.

Description

Technical Field

[0001] This invention belongs to the field of handle testing technology, and in particular relates to a handle operating torque testing device and its usage method. It is suitable for standardized testing of performance indicators such as handle operating torque and operating torque after repeated opening and closing during the lock manufacturing process, and can especially meet the national standard requirements for handle testing accuracy and efficiency. Background Technology

[0002] In the lock industry, a handle (also known as a lever or pull handle) refers to the part of a lock used for manually operating the bolt. It is typically installed on the inside or outside of a door and is used to control the opening and closing of the lock body by rotating, pressing down, or pulling. After processing, handles need to be tested according to national standards to determine whether their operating torque and operating torque after repeated opening and closing meet the requirements. This includes testing the operating torque of the handle.

[0003] Traditional methods for measuring lever operating torque rely on operators holding a torque wrench or a handheld force gauge. The process involves first measuring the operating force, then the distance of the lever arm, and finally calculating the torque value using the formula "operating force × lever arm". However, this manual measurement method has several insurmountable drawbacks: First, when the operator holds the measuring device, it's impossible to ensure the contact point between the force gauge and the lever remains constant; any deviation in the contact point directly leads to errors in the lever arm measurement. Second, manual operation makes it difficult to ensure the force gauge rotates precisely along the lever's axis; eccentric rotation causes the measured force value to deviate from the actual force. Finally, during manual rotation, the rotation speed cannot be kept consistent, resulting in unstable force transmission and further affecting the accuracy of the test results. These problems lead to low detection accuracy and poor data repeatability in traditional testing methods, making it difficult to meet the stringent quality control requirements of the lock industry.

[0004] To address the shortcomings of traditional manual inspection, patent document CN115752838B discloses a handle operating torque detection device. This device, through its structure including a main body, a fixing component, a rotation drive assembly, a height adjustment assembly, a moving assembly, and a pressure detection assembly, achieves rotation of the pressure detection assembly and the handle along the same axis, ensuring consistent rotation speed and fixed contact points, effectively improving the accuracy of the inspection results. However, this patented technology still has significant drawbacks: the alignment of the pressure detection assembly's axis with the handle's axis relies primarily on manual adjustment, which is time-consuming and highly dependent on the operator's experience, resulting in low axis alignment efficiency. In batch inspection scenarios, this inefficient alignment method severely impacts the overall inspection efficiency of the handle, making it difficult to meet the large-scale inspection needs of lock manufacturers.

[0005] Therefore, it is urgent to improve the existing handle operating torque detection device to increase the efficiency of handle operating torque detection. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned technical problems by providing a handle operating torque detection device and its usage method. This solves the problems of low axis alignment efficiency, reliance on manual experience, and insufficient batch testing efficiency in the prior art, while maintaining high accuracy of the test results and meeting the standardized testing needs of the lock industry.

[0007] In view of this, the present invention provides a handle operating torque detection device, comprising: The support platform can support the entire testing device; The clamping base is used to fix the panel of the handle. The handle of the handle can rotate relative to the clamping base, and the axis of the handle coincides with the center of the clamping base. An axial positioning seat is mounted on a bearing platform. One end of the axial positioning seat has a positioning groove, the center of which coincides with the center of the axial positioning seat. A clamping seat is detachably connected to the axial positioning seat, the center of which coincides with the center of the axial positioning seat. The drive assembly includes a rotary power source and a drive shaft. The rotary power source is mounted on the support platform. One end of the drive shaft is connected to the output end of the rotary power source, and the other end of the drive shaft can be coaxially inserted into the positioning groove. The pressure detection assembly includes a swing frame, a pressure sensor, and a contact element. The swing frame is located between the rotary power source and the axial positioning seat. One end of the swing frame can rotate synchronously with the drive shaft. One end of the pressure sensor is mounted on the swing frame, and the other end of the pressure sensor is close to the handle along the axial direction of the drive shaft and connected to the contact element at the end. The end of the contact element away from the pressure sensor contacts the surface of the handle. When the drive shaft rotates, it can carry the pressure detection component to rotate at the same angular velocity. During this process, the contact element applies a coaxial rotational force to the handle, and the pressure sensor detects the reaction force of the handle on the contact element in real time.

[0008] In the above technical solution, one end of the axial positioning seat is provided with an installation groove. The contour of the installation groove is adapted to the contour of the clamping seat. The clamping seat can be inserted into the installation groove. At this time, the side wall of the clamping seat fits against the side wall of the installation groove, and the center of the clamping seat coincides with the center of the axial positioning seat.

[0009] In the above technical solution, furthermore, the axial positioning seat is threadedly connected to a first threaded locking member, which can lock or unlock the clamping seat in the mounting groove by rotating itself.

[0010] In the above technical solution, a T-shaped slide groove is further provided on the bearing platform, and a fixed plate and an abutment plate are provided at the bottom of the axial positioning seat. The fixed plate and the abutment plate are connected by a second threaded locking member. The abutment plate is slidably disposed in the T-shaped slide groove along the axial direction of the transmission shaft. The fixed plate is in contact with the surface of the bearing platform. The second threaded locking member can lock or unlock the abutment plate and the fixed plate by rotating itself.

[0011] In the above technical solution, one end of the swing frame is connected to the outside of the drive shaft by a key connection, and a stop plate is provided at the end of the drive shaft away from the axial positioning seat. One side surface of the swing frame abuts against the stop plate, and the other side surface of the swing frame abuts against the end face of the axial positioning seat.

[0012] In the above technical solution, the swing frame further includes a connecting seat, an adjusting frame, and a mounting frame. One end of the connecting seat is connected to the drive shaft, and the other end of the connecting seat is connected to the adjusting frame. The adjusting frame can adjust its position along the length direction of the connecting seat. One end of the mounting frame is set on the adjusting frame, and the other end of the mounting frame is close to the handle along the axial direction of the drive shaft. One end of the pressure sensor is set on the end of the mounting frame away from the adjusting frame.

[0013] In the above technical solution, further, an adjustment groove is provided at the end of the connecting seat away from the drive shaft, one end of the adjustment frame is slidably disposed in the adjustment groove along the length direction of the connecting seat, a locking groove is provided on the side wall of the adjustment groove, a locking plate is movably disposed in the locking groove, and a third threaded locking component is provided on the connecting seat, which can drive the locking plate to move closer to or away from the adjustment frame by rotating itself.

[0014] In the above technical solution, furthermore, a scale bar is provided on the side wall of the connecting seat or the adjusting frame along the moving direction of the adjusting frame, so that the connecting seat can read the distance between the handle force point and the handle axis in conjunction with the scale bar during the position adjustment process.

[0015] In the above technical solution, a drive groove is further provided on the side wall of the adjustment groove, the drive groove penetrates the side wall of the adjustment groove, a rack is provided on the adjustment frame and located in the drive groove along the moving direction of the adjustment frame, a bracket is provided on the side wall of the connecting seat, a gear is rotatably provided on the bracket, and the gear part enters the drive groove and meshes with the rack.

[0016] This invention also discloses a method for using the aforementioned operating torque detection device, comprising the following steps: X1. Assembly: Fit one end of the connecting seat onto the outer wall of the drive shaft, so that the drive key on the outer wall of the drive shaft is engaged in the drive groove at the end of the connecting seat, and make one side surface of the connecting seat abut against the stop plate. Then, bring the axial positioning seat close to the drive shaft, so that the end of the drive shaft away from the stop plate is inserted into the positioning groove until the end face of the axial positioning seat abuts against the other side surface of the connecting seat. At this time, rotate the second threaded locking part to lock the abutment plate and the fixing plate. X2. Clamping: Select a suitable clamping base, fix the handle panel on the clamping base, and then coaxially install the clamping base onto the axial positioning base to complete the clamping of the handle. At this time, the contact element contacts the handle surface along the handle length direction perpendicular to the handle. X3. Force Detection: Start the rotational power source to drive the transmission shaft to rotate by a preset angle. The transmission shaft drives the pressure detection component to rotate by a preset angle. During this process, the contact element applies pressure to the handle and drives the handle to rotate by a preset angle around the same axis as the transmission shaft. At the same time, the pressure sensor detects the reaction force applied by the handle to the contact element. X4. Torque Calculation: Record the pressure value detected by the pressure sensor to obtain the operating force, measure the distance between the force point of the handle and the handle axis to obtain the operating lever arm, and multiply the operating force by the operating lever arm to obtain the operating torque of the handle.

[0017] The beneficial effects of this invention are: 1. Through the coaxial design of the drive shaft, axial positioning seat, and clamping seat, automatic coaxial alignment of the pressure detection component and the handle is achieved, eliminating the need for manual adjustment of the shaft center. This significantly reduces reliance on operator experience, greatly shortens the shaft center alignment time, and improves detection efficiency. At the same time, the drive shaft drives the pressure detection component and the handle to rotate synchronously, ensuring consistent rotational angular velocity and a fixed contact point between the contact element and the handle. This effectively avoids problems such as eccentricity and contact point misalignment that may occur in traditional detection and existing patented technologies, meeting the high-precision detection requirements of national standards. In addition, the device has a compact structure and reasonable layout, making it suitable for detecting handles of different specifications and highly versatile.

[0018] 2. By setting a mounting groove on the axial positioning seat that matches the contour of the clamping seat, the side walls of the clamping seat fit together after being inserted into the mounting groove, achieving rapid and accurate positioning between the clamping seat and the axial positioning seat. Compared with traditional point positioning or line positioning, this surface contact positioning method has higher positioning accuracy. At the same time, the plug-in fit between the clamping seat and the mounting groove facilitates quick replacement of the clamping seat and adapts to handle panels of different contour sizes, further improving the versatility and testing efficiency of the device, and is especially suitable for rapid switching between different specifications of handles in batch testing scenarios.

[0019] 3. The axial positioning seat is adjustable and fixed on the bearing platform by means of the T-shaped slide, the fixing plate, the abutment plate and the second threaded locking part; the clamping fixing method of the fixing plate and the abutment plate can firmly fix the axial positioning seat on the bearing platform, and it will not be displaced even in the vibration environment, thus ensuring the stability of the testing process.

[0020] 4. The keyed connection enables synchronous rotation of the swing frame and the drive shaft, resulting in a simple structure, high torque transmission, and high positioning accuracy. At the same time, the end face of the stop plate and the axial positioning seat cooperate to achieve axial limiting of the swing frame, preventing axial movement of the swing frame during rotation and ensuring that the contact point between the contact element and the handle remains fixed, further improving the detection accuracy.

[0021] 5. The swing frame is designed as a combination structure of a connecting seat, an adjusting bracket, and a mounting bracket. The adjusting bracket can be adjusted along the length of the connecting seat, thereby adjusting the position of the pressure sensor and contact element to accommodate handles of different lengths. This adjustable structure allows the device to adapt to handles of different sizes without replacing the swing frame, significantly improving the device's versatility. Simultaneously, the mounting bracket extends axially along the drive shaft, ensuring that the pressure sensor and contact element are accurately aligned with the force points of the handle, guaranteeing accurate pressure transmission. Furthermore, the segmented swing frame structure facilitates processing and assembly; each component can be manufactured individually, reducing processing difficulty and cost. If a component is damaged, it can be replaced individually without replacing the entire swing frame, reducing maintenance costs.

[0022] 6. By setting a scale bar on the adjustment frame, the distance between the handle force point and the handle axis can be read directly without the need for additional measuring tools such as rulers and calipers, which simplifies the lever arm measurement process, greatly shortens the measurement time, and improves the testing efficiency. In addition, the scale bar allows operators to quickly and intuitively adjust the position of the adjustment frame, which facilitates the precise adjustment of different lever arm lengths and improves the ease of operation of the device.

[0023] 7. The position adjustment of the adjusting frame is achieved through a gear and rack transmission. Compared to manually pushing the adjusting frame, the gear and rack transmission has the advantages of smooth transmission, less effort, and high adjustment accuracy. The operator can drive the adjusting frame to move smoothly by rotating the gear, without applying a large pushing force, thus reducing the operator's workload. The meshing transmission of the gear and rack enables fine adjustment of the adjusting frame with high accuracy, meeting the requirements of high-precision lever arm adjustment. At the same time, the gear and rack transmission has a self-locking function, so the adjusting frame will not move on its own when no external force is applied, ensuring the stability of the lever arm length. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the front and back sides of the handle in this invention.

[0026] Figure 2 This is a three-dimensional structural diagram of the torque detection device in this invention for detecting the handle.

[0027] Figure 3 This is a frontal perspective view of the torque detection device in this invention.

[0028] Figure 4 This is a three-dimensional structural diagram of the rear of the torque detection device in this invention.

[0029] Figure 5 This is a schematic diagram showing the connection of the fixing plate, the abutment plate, the second threaded locking member, and the T-shaped slide groove in this invention.

[0030] Figure 6 This is a cross-sectional structural diagram showing the connection state between the drive shaft, stop plate, swing frame, axial positioning seat, and clamping seat in this invention.

[0031] Figure 7 This is a frontal three-dimensional structural diagram of the disassembled components of the torque detection device in this invention, with the support platform hidden in the diagram.

[0032] Figure 8 This is a three-dimensional rear view of the disassembled components of the torque detection device in this invention, with the support platform hidden in the figure.

[0033] Figure 9 This is a frontal three-dimensional structural diagram of the disassembled components of the torque detection device in this invention, with the support platform and drive assembly hidden in the diagram.

[0034] Figure 10 This is a three-dimensional structural diagram of the pressure detection component in the assembled state of the present invention.

[0035] Figure 11 This is a three-dimensional structural diagram of the pressure detection component in the disassembled state of the present invention.

[0036] Figure 12 This is a schematic diagram of the cross-sectional structure of the pressure detection component in the assembled state in this invention.

[0037] Figure 13This is a schematic diagram of the adjustment mechanism and the connecting seat being adjusted via a gear and rack transmission in this invention.

[0038] The markings in the diagram are as follows: 1. Handle; 101. Handle; 102. Panel; 1021. Mounting screw hole; 103. Mandrel; 2. Support platform; 201. T-slot; 3. Clamping seat; 301. Clearance hole; 302. Workpiece mounting hole; 303. Clamping screw hole; 4. Axial positioning seat; 401. Positioning groove; 402. Mounting groove; 403. Clamping mounting hole; 5. Drive assembly; 501. Drive shaft; 5011. Drive key; 502. Motor; 503. Reducer; 504. Stop plate; 6. Swing frame; 601, Connecting seat; 6011, Sleeve groove; 6012, Transmission groove; 6013, Adjustment groove; 6014, Locking groove; 6015, Drive groove; 602, Adjustment frame; 6021, Scale bar; 603, Mounting frame; 7, Pressure sensor; 8, Contact element; 9, First threaded locking element; 10, Fixing plate; 11, Abutment plate; 12, Second threaded locking element; 13, Locking plate; 14, Third threaded locking element; 15, Rack; 16, Bracket; 17, Gear; Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the invention. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0041] The handle 1 structure of the present invention is as follows Figure 1As shown, the handle 1 includes a handle 101, a panel 102, and a spindle 103. The side of the panel 102 used for installation has multiple mounting screw holes 1021. Taking two mounting screw holes 1021 as an example in the figure, the panel 102 is fixed to the door body by threaded connection during use. The spindle 103 is generally square. One end of the spindle 103 is connected to the end of the handle 101, and the other end of the spindle 103 passes through the door body and is connected to the lock body. After the panel 102 is installed, applying torque to the handle 101 can make the handle 101 rotate relative to the door body, thereby controlling the opening and closing of the lock body.

[0042] This invention provides a handle operating torque detection device, which includes: a support platform 2, a clamping base 3, an axial positioning base 4, a drive assembly 5, and a pressure detection assembly; the structure, connection relationship, and cooperation method of each component are as follows: Support platform 2 The support platform 2 serves as the foundation for the entire testing device, used to install and support all components such as the clamping seat 3, axial positioning seat 4, and drive assembly 5. The support platform 2 must possess sufficient structural strength and stability to avoid testing errors caused by vibration during the testing process. It is preferably made of QT450-10 ductile iron, which is integrally cast. This material has high strength, high toughness, and good resistance to deformation, and can effectively absorb vibration energy during the testing process, ensuring the flatness and stability of the support platform 2. The upper surface of the support platform 2 is precision ground, and the flatness error is controlled within 0.02mm / m, providing a precise reference surface for the installation of each component.

[0043] Please see Figure 2 and Figure 3 The upper surface of the support platform 2 is provided with two parallel T-shaped grooves 201. The length direction of the T-shaped grooves 201 is consistent with the axis direction of the drive shaft 501. They are used to install the abutment plate 11 of the axial positioning seat 4. The bottom four corners of the support platform 2 are provided with leveling feet. The support platform 2 can be kept horizontal by adjusting the leveling feet, which further ensures the detection accuracy.

[0044] Mounting base 3 In this embodiment, the clamping base 3 is generally hexagonal in shape and is used to fix the panel 102 of the handle 1, so that the handle 101 of the handle 1 can rotate freely relative to the clamping base 3, and ensure that the axis of the handle 1 coincides with the center of the clamping base 3; the structure of the clamping base 3 is adapted to the contour of the panel 102 of the handle 1, please refer to Figure 3 The clamping base 3 has a clearance hole 301 and two workpiece mounting holes 302 on the side facing the handle 1. Please refer to [link / reference]. Figure 8The clearance hole 301 and the two workpiece mounting holes 302 both penetrate the two end faces of the clamping base 3. The clearance hole 301 is used to avoid the spindle 103 of the handle 1. The two workpiece mounting holes 302 correspond one-to-one with the two mounting screw holes 1021 on the handle 1 panel 102. After the bolt passes through the workpiece mounting hole 302, it is threaded to the mounting screw hole 1021 of the handle 1 panel 102, so as to firmly fix the handle 1 panel 102 on the clamping base 3.

[0045] The clamping base 3 is preferably made of 6061 aluminum alloy, which has low density, high strength, and good machinability, enabling it to reduce the overall weight of the device while ensuring the structural accuracy of the clamping base 3. The coaxiality error between the central axis of the clamping base 3 and the axis of the handle 1 is controlled within 0.01mm to ensure the axial accuracy of the handle 1 after installation. The clearance between the outer wall of the clamping base 3 and the inner wall of the mounting groove 402 of the axial positioning seat 4 is 0.01-0.02mm to ensure the coaxiality of the clamping base 3 after it is inserted into the mounting groove 402.

[0046] In this embodiment, the clamping base 3 can be designed as a set of standard parts. When the operating torque of a batch of handles 1 is tested, the next handle 1 can be fixed to the empty clamping base 3 while one handle 1 is being tested, thereby shortening the time to fix the handle 1 to the axial positioning seat 4 and improving the testing efficiency of the batch of handles 1.

[0047] Axial positioning seat 4 Axial positioning seat 4 is mounted on bearing platform 2. Please refer to [link / reference]. Figure 6 and Figure 8 One end of the axial positioning seat 4 is provided with a positioning groove 401, the center of the positioning groove 401 coincides with the center of the axial positioning seat 4; the clamping seat 3 is detachably connected to the axial positioning seat 4, and the center of the clamping seat 3 coincides with the center of the axial positioning seat 4.

[0048] Specifically, please refer to Figure 6 , Figure 7 as well as Figure 9 The axial positioning seat 4 is provided with an installation groove 402 at the end away from the positioning groove 401. The outline of the installation groove 402 is adapted to the outline of the clamping seat 3. The clamping seat 3 can be inserted into the installation groove 402. At this time, the side wall of the clamping seat 3 is in close contact with the side wall of the installation groove 402. Precise positioning is achieved through surface contact, ensuring that the center of the clamping seat 3 coincides with the center of the axial positioning seat 4. Please see Figure 7 and Figure 9The outer wall of the axial positioning seat 4 is provided with two clamping mounting holes 403, which are symmetrically arranged on both sides of the axial positioning seat 4. Both clamping mounting holes 403 communicate with the mounting groove 402. The outer wall of the clamping seat 3 is provided with two clamping screw holes 303, which are respectively opposite to the two clamping mounting holes 403. A first threaded locking member 9 is provided on the axial positioning seat 4. The first threaded locking member 9 is preferably an internal hexagonal cylinder. The screw head has its axis perpendicular to the side wall of the mounting groove 402. The threaded end of the first threaded locking member 9 can pass through the mounting hole 403 and be threadedly connected to the mounting screw hole 303. When the mounting seat 3 is inserted into the mounting groove 402, the threaded end of the first threaded locking member 9 is screwed into the mounting screw hole 303 to lock the mounting seat 3 in the mounting groove 402. The mounting seat 3 can be unlocked in the mounting groove 402 by unscrewing the threaded end of the first threaded locking member 9 out of the mounting screw hole 303.

[0049] In one embodiment of the present invention, it is not necessary to provide a clamping screw hole 303 on the outer wall of the clamping seat 3. Instead, the clamping mounting hole 403 on the axial positioning seat 4 is designed as a threaded hole structure. When the clamping seat 3 needs to be locked in the mounting groove 402, the threaded end of the first threaded locking member 9 is threadedly engaged with the clamping mounting hole 403 and then inserted into the mounting groove 402 to press against the outer wall of the clamping seat 3. When the clamping seat 3 needs to be unlocked in the mounting groove 402, the first threaded locking member 9 is rotated to separate its threaded end from the outer wall of the clamping seat 3.

[0050] In this embodiment, please refer to Figure 3 and Figure 5 The bottom of the axial positioning seat 4 is provided with a fixing plate 10 and an abutment plate 11. The fixing plate 10 and the abutment plate 11 are connected by a second threaded locking member 12. The fixing plate 10 is a rectangular steel plate, and the abutment plate 11 is a rectangular steel plate or a T-shaped steel plate. The size of the abutment plate 11 is adapted to the T-shaped slide 201. The abutment plate 11 is slidably disposed in the T-shaped slide 201 of the bearing platform 2 along the axial direction of the transmission shaft 501. The fixing plate 10 is in contact with the surface of the bearing platform 2. In order to facilitate the installation and disassembly of the abutment plate 11 and the T-shaped slide 201, the T-shaped slide 201 can be designed to penetrate the side wall of the bearing platform 2 at one end.

[0051] The second threaded locking member 12 is preferably a wing bolt, which is convenient for manual operation by the operator. The abutment plate 11 and the fixing plate 10 can be locked or unlocked by rotating itself. For example, the fixing plate 10 is provided with a through hole that penetrates its upper and lower surfaces, and the abutment plate 11 is provided with a threaded hole that penetrates its upper and lower surfaces. The threaded end of the second threaded locking member 12 passes through the through hole on the fixing plate 10 and is threadedly connected to the threaded hole on the abutment plate 11. When the position of the axial positioning seat 4 needs to be adjusted, the second threaded locking member 12 is loosened, and the abutment plate 11 can slide along the T-shaped slide groove 201, so that the axial positioning seat 4 can move axially as a whole; after the adjustment is in place, the second threaded locking member 12 is tightened, so that the abutment plate 11 and the fixing plate 10 clamp the edge of the T-shaped slide groove 201 of the bearing platform 2, thereby fixing the axial positioning seat 4.

[0052] In this embodiment, the axial positioning seat 4 is preferably made of 45 steel. After quenching and tempering, the hardness reaches HRC28-32, which has both good strength and wear resistance. The inner wall of the positioning groove 401 is precision ground and the surface roughness Ra≤0.8μm to ensure the fitting accuracy with the drive shaft 501.

[0053] Driver Component 5 Drive assembly 5 includes a rotary power source and a drive shaft 501, please refer to [link / reference]. Figure 4 The rotational power source is set on the support platform 2. The rotational power source can be a combination of motor 502 and reducer 503. The motor 502 is preferably a servo motor. The servo motor has the characteristics of stable speed, wide speed range and high positioning accuracy. It can accurately control the rotation angle and speed to ensure that the rotation speed of the pressure detection component is consistent with that of the handle 1. The output end of the servo motor is connected to the input shaft of the reducer 503 through a coupling. The reducer 503 is preferably a planetary gear 17 reducer 503. The reduction ratio can be selected according to the actual detection requirements (such as 1:10~1:50). By reducing the speed and increasing the torque, it provides stable rotational power to the transmission shaft 501 and improves the torque output accuracy. One end of the drive shaft 501 is connected to the output end of the reducer 503 via a key to ensure reliable power transmission; please refer to Figure 6 The other end of the drive shaft 501 can be coaxially inserted into the positioning groove 401 of the axial positioning seat 4. The cross-sectional shape of the positioning groove 401 is circular. After the drive shaft 501 is inserted into the positioning groove 401, it can rotate relative to the axial positioning seat 4.

[0054] The drive shaft 501 is preferably made of 40Cr material. After quenching, its hardness reaches HRC45-50, which has high strength and wear resistance. The straightness error of the drive shaft 501 axis is controlled within 0.01mm / m to ensure coaxiality during rotation.

[0055] A stop plate 504 is provided at the end of the drive shaft 501 away from the axial positioning seat 4. The stop plate 504 is fixed to the drive shaft 501 by a nut and is used to axially limit the swing frame 6.

[0056] Pressure detection components Please see Figure 2 and Figure 3The pressure detection assembly includes a swing frame 6, a pressure sensor 7, and a contact 8. The swing frame 6 is located between the rotational power source and the axial positioning seat 4. One end of the swing frame 6 can rotate synchronously with the transmission shaft 501. One end of the pressure sensor 7 is mounted on the swing frame 6. The other end of the pressure sensor 7 is close to the handle 1 along the axial direction of the transmission shaft 501 and is connected to the contact 8 at the end. The end of the contact 8 away from the pressure sensor 7 contacts the surface of the handle 1. Specifically, one end of the swing frame 6 is connected to the outside of the drive shaft 501 via a key connection. Please refer to [link to relevant documentation]. Figures 8-11 The end of the swing frame 6 is provided with a sleeve groove 6011 and a transmission groove 6012. The transmission key 5011 on the transmission shaft 501 is inserted into the transmission groove 6012 to achieve circumferential fixation between the swing frame 6 and the transmission shaft 501, ensuring that the two rotate synchronously. Please see Figure 6 After the testing device is assembled, one side surface of the swing frame 6 abuts against the stop plate 504, and the other side surface abuts against the end face of the axial positioning seat 4. Through the axial limiting of the stop plate 504 and the axial positioning seat 4, the swing frame 6 is axially fixed on the transmission shaft 501, so as to avoid axial movement during rotation.

[0057] In this embodiment, please refer to Figure 10 and Figure 11 The swing frame 6 includes a connecting seat 601, an adjusting frame 602, and a mounting frame 603. The connecting seat 601, adjusting frame 602, and mounting frame 603 are all made of 6061 aluminum alloy. The connecting seat 601 has a cuboid structure with a sleeve groove 6011 and a transmission groove 6012 at one end. It is connected to the transmission shaft 501 through the transmission key 5011 to achieve synchronous rotation. One side surface of the connecting seat 601 abuts against the stop plate 504, and the other side surface abuts against the end face of the axial positioning seat 4 to achieve axial limiting. The other end of the connecting seat 601 is connected to the adjusting frame 602. The adjusting frame 602 can be adjusted along the length of the connecting seat 601. One end of the mounting frame 603 is set on the adjusting frame 602, and the other end is close to the handle 1 along the axial direction of the transmission shaft 501. One end of the pressure sensor 7 is set on the end of the mounting frame 603 away from the adjusting frame 602. For details, please refer to Figure 11 and Figure 12The connecting seat 601 has an adjusting groove 6013 at one end away from the drive shaft 501. One end of the adjusting bracket 602 is slidably disposed in the adjusting groove 6013 along the length of the connecting seat 601. A locking groove 6014 is provided on the side wall of the adjusting groove 6013, and a locking plate 13 is movably disposed in the locking groove 6014. A third threaded locking element 14 is provided on the connecting seat 601. The third threaded locking element 14 is preferably an internal hexagon set screw, the axis of which is perpendicular to the side wall of the adjusting groove 6013. A locking plate 13 is provided on the side wall of the locking groove 6014 away from the adjusting groove 6013. The locking groove 6014 has a threaded hole that penetrates the side wall of the locking groove 6014. The threaded end of the third threaded locking member 14 is threadedly connected to the threaded hole on the side wall of the locking groove 6014, and then rotatably connected to the locking plate 13. Rotating the third threaded locking member 14 can drive the locking plate 13 to move closer to or away from the adjusting frame 602. When the adjusting frame 602 is adjusted to a suitable position, tightening the third threaded locking member 14 pushes the locking plate 13 against the side wall of the adjusting frame 602, thereby fixing the adjusting frame 602. Loosening the third threaded locking member 14 allows the position of the adjusting frame 602 to be adjusted.

[0058] The mounting bracket 603 has a U-shaped structure. One end is fixed to the adjusting bracket 602 by bolts, and the other end extends along the axial direction of the drive shaft 501. The pressure sensor 7 is fixed to the end of the mounting bracket 603 away from the adjusting bracket 602 by bolts.

[0059] In one embodiment of the present invention, a scale bar 6021 is provided on the side wall of the adjustment frame 602 along the moving direction of the adjustment frame 602. The scale bar 6021 has a graduation value of 0.1mm, which facilitates the quick reading of the distance between the force point of the handle 1 and the axis of the handle 1 during the adjustment of the position of the adjustment frame 602. No additional measuring tools are required, which improves the efficiency and accuracy of lever arm measurement.

[0060] For preferred options, please refer to [link / reference]. Figure 13 A drive groove 6015 is provided on the side wall of the adjusting groove 6013, penetrating the side wall of the adjusting groove 6013. A rack 15 is provided on the adjusting frame 602 and located in the drive groove 6015 along the moving direction of the adjusting frame 602. A bracket 16 is provided on the side wall of the connecting seat 601, and a gear 17 is rotatably mounted on the bracket 16. Part of the gear 17 enters the drive groove 6015 and meshes with the rack 15. By rotating the gear 17, the rack 15 and the adjusting frame 602 are driven to move along the adjusting groove 6013, realizing the fine adjustment of the position of the adjusting frame 602. Compared with manually pushing the adjusting frame 602, the gear 17 and rack 15 transmission has the advantages of smooth adjustment, high precision, and labor saving.

[0061] In this embodiment, the pressure sensor 7 is preferably an S-type tension pressure sensor 7 with a measurement range of 0-500N and an accuracy class of 0.1. It can detect the pressure signal transmitted by the contact member 8 in real time and accurately, and transmit the signal to the data processing system. The end of the contact member 8 away from the pressure sensor 7 is set as an arc-shaped contact surface, preferably made of polyoxymethylene (POM) material. This material has good wear resistance, self-lubrication and mechanical strength, which can not only ensure reliable contact with the surface of the handle 1, but also avoid scratching the surface of the handle 1. At the same time, the arc-shaped contact surface can reduce the offset of the contact point and ensure the stability of pressure transmission.

[0062] Preferably, an adjustment connection structure is provided between the output end of the pressure sensor 7 and the contact 8. Specifically, the output end of the pressure sensor 7 is machined into an external threaded post, preferably with a thread specification of M12×1.5 and a length of 30mm. The axis of the external threaded post coincides with the force-bearing axis of the pressure sensor 7 to ensure the coaxiality of pressure transmission. An internal threaded hole is opened at the end of the contact 8 near the pressure sensor 7. The internal threaded hole is adapted to the external threaded post of the pressure sensor 7, and the thread length is 25mm to ensure sufficient adjustment stroke. The main body of the contact 8 is still an arc-shaped contact surface (material...). The curvature of the arc surface (maintaining polyoxymethylene (POM)) is designed to fit within the range of R15-R25mm based on the common handle 1 handle 101 profile. Special specifications of handle 101 can be adapted by replacing the contact element 8 with different arc surfaces. An M16 hexagonal thin nut is fitted onto the external threaded post of the pressure sensor 7, with its inner diameter matching the external threaded post of the pressure sensor 7. It is located between the contact element 8 and the output end face of the pressure sensor 7. Tightening the hexagonal thin nut causes it to press against the contact element 8, thus locking the contact element 8. Loosening the hexagonal thin nut allows adjustment of the axial position of the contact element 8.

[0063] This invention also discloses a method for using the torque detection device, comprising the following steps: X1. Assembly: Connect one end of the connecting seat 601 to the outer wall of the drive shaft 501, so that the drive key 5011 on the outer wall of the drive shaft 501 is inserted into the drive groove 6012 at the end of the connecting seat 601, and make one side surface of the connecting seat 601 abut against the stop plate 504. Then, bring the axial positioning seat 4 close to the drive shaft 501, so that the end of the drive shaft 501 away from the stop plate 504 is inserted into the positioning groove 401 until the end face of the axial positioning seat 4 abuts against the other side surface of the connecting seat 601. At this time, rotate the second threaded locking member 12 to lock the abutment plate 11 and the fixing plate 10, and complete the assembly and positioning of each component. X2. Clamping: According to the specifications of the handle 1 to be tested, select the appropriate clamping seat 3, fix the panel 102 of the handle 1 to the clamping seat 3 with bolts, ensure that the axis of the handle 1 coincides with the center of the clamping seat 3, then insert the clamping seat 3 into the mounting groove 402 of the axial positioning seat 4, rotate the first threaded locking member 9 to lock the clamping seat 3, and complete the clamping of the handle 1. At this time, the contact member 8 contacts the surface of the handle 101 along the length direction perpendicular to the handle 101 of the handle 1. X3. Force Detection: The servo motor is started by the control system to drive the transmission shaft 501 to rotate at a preset angle (such as 90°, 180°, etc., which can be set according to the detection requirements). The transmission shaft 501 drives the pressure detection component to rotate synchronously at the preset angle through a key connection. During this process, the contact member 8 applies a stable rotational pressure to the handle 101 of the handle 1 and drives the handle 1 to rotate at the same axis as the transmission shaft 501 at a preset angle. At the same time, the pressure sensor 7 detects the reaction force applied by the handle 1 to the contact member 8 in real time and transmits the pressure data to the control system. X4. Torque Calculation: The control system records the pressure value (i.e., operating force) detected by the pressure sensor 7, and combines it with the distance between the force point of the handle 1 and the axis of the handle 1 (i.e., operating lever arm) read by the scale bar 6021. The system automatically calculates the operating torque of the handle 1 using the formula "operating force × operating lever arm", and displays and stores the detection data and calculation results for easy subsequent query and statistics.

[0064] The usage method of the torque detection device in this embodiment reduces the training cost for operators. In the assembly step, the cooperation of the transmission key 5011, the stop plate 504, and the axial positioning seat 4 enables rapid and accurate positioning of each component, resulting in high assembly efficiency. In the clamping step, the plug-in design of the clamping seat 3 and the quick-locking function of the first threaded locking part 9 enable rapid clamping of the handle 1. In the force detection step, the precise control of the servo motor ensures the stability of the rotation angle and speed, and the pressure sensor 7 collects data in real time, resulting in a high degree of automation. In the torque calculation step, the control system automatically completes data processing and calculation without manual intervention, avoiding errors caused by manual calculation. At the same time, it realizes the display and storage of data, which is convenient for subsequent traceability and statistics. The entire usage process is short, and the detection time of a single handle 1 is reduced from 5-8 minutes in the existing technology to 1-2 minutes, which greatly improves the efficiency of batch detection and meets the large-scale testing needs of lock manufacturing enterprises.

[0065] The embodiments of the present invention have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other. The present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A handle operating torque detection device, characterized in that, include: The support platform (2) is capable of supporting the entire testing device; The clamping base (3) is used to fix the panel (102) of the handle (1), and the handle (101) of the handle (1) can rotate relative to the clamping base (3). The axis of the handle (1) coincides with the center of the clamping base (3). An axial positioning seat (4) is provided on the bearing platform (2). One end of the axial positioning seat (4) is provided with a positioning groove (401), the center of which coincides with the center of the axial positioning seat (4). A clamping seat (3) is detachably connected to the axial positioning seat (4), the center of which coincides with the center of the axial positioning seat (4). The drive assembly (5) includes a rotary power source and a transmission shaft (501). The rotary power source is disposed on the support platform (2). One end of the transmission shaft (501) is connected to the output end of the rotary power source, and the other end of the transmission shaft (501) can be coaxially inserted into the positioning groove (401). The pressure detection assembly includes a swing frame (6), a pressure sensor (7), and a contact (8); the swing frame (6) is located between the rotational power source and the axial positioning seat (4), one end of the swing frame (6) can rotate synchronously with the transmission shaft (501), one end of the pressure sensor (7) is disposed on the swing frame (6), and the other end of the pressure sensor (7) is close to the handle (1) along the axial direction of the transmission shaft (501) and is connected to the contact (8) at the end, and the end of the contact (8) away from the pressure sensor (7) is in contact with the surface of the handle (1); When the drive shaft (501) rotates, it can carry the pressure detection component to rotate at the same angular velocity. During this process, the contact member (8) applies a coaxial rotational force to the handle (1), and the pressure sensor (7) detects the reaction force of the handle (1) on the contact member (8) in real time.

2. The handle operating torque detection device according to claim 1, characterized in that: One end of the axial positioning seat (4) is provided with a mounting groove (402). The outline of the mounting groove (402) is adapted to the outline of the clamping seat (3). The clamping seat (3) can be inserted into the mounting groove (402). At this time, the side wall of the clamping seat (3) is in contact with the side wall of the mounting groove (402), and the center of the clamping seat (3) coincides with the center of the axial positioning seat (4).

3. The handle operating torque detection device according to claim 2, characterized in that: The axial positioning seat (4) is threadedly connected to a first threaded locking member (9), which can lock or unlock the clamping seat (3) in the mounting groove (402) by rotating itself.

4. The handle operating torque detection device according to claim 1, characterized in that: The support platform (2) is provided with a T-shaped slide groove (201). The bottom of the axial positioning seat (4) is provided with a fixing plate (10) and an abutment plate (11). The fixing plate (10) and the abutment plate (11) are connected by a second threaded locking member (12). The abutment plate (11) is slidably disposed in the T-shaped slide groove (201) along the axial direction of the transmission shaft (501). The fixing plate (10) is in contact with the surface of the support platform (2). The second threaded locking member (12) can lock or unlock the abutment plate (11) and the fixing plate (10) by rotating itself.

5. The handle operating torque detection device according to claim 4, characterized in that: One end of the swing frame (6) is connected to the outside of the transmission shaft (501) by a key. A stop plate (504) is provided at the end of the transmission shaft (501) away from the axial positioning seat (4). One side surface of the swing frame (6) abuts against the stop plate (504), and the other side surface of the swing frame (6) abuts against the end face of the axial positioning seat (4).

6. The handle operating torque detection device according to claim 5, characterized in that: The swing frame (6) includes a connecting seat (601), an adjusting frame (602), and a mounting frame (603). One end of the connecting seat (601) is connected to the drive shaft (501), and the other end of the connecting seat (601) is connected to the adjusting frame (602). The adjusting frame (602) can be adjusted in position along the length direction of the connecting seat (601). One end of the mounting frame (603) is disposed on the adjusting frame (602), and the other end of the mounting frame (603) is close to the handle (1) along the axial direction of the drive shaft (501). One end of the pressure sensor (7) is disposed on the end of the mounting frame (603) away from the adjusting frame (602).

7. The handle operating torque detection device according to claim 6, characterized in that: An adjustment groove (6013) is provided at one end of the connecting seat (601) away from the drive shaft (501). One end of the adjusting frame (602) is slidably disposed in the adjustment groove (6013) along the length direction of the connecting seat (601). A locking groove (6014) is provided on the side wall of the adjustment groove (6013). A locking plate (13) is movably disposed in the locking groove (6014). A third threaded locking member (14) is provided on the connecting seat (601). The third threaded locking member (14) can drive the locking plate (13) to move closer to or away from the adjusting frame (602) by rotating itself.

8. The handle operating torque detection device according to claim 7, characterized in that: A scale bar (6021) is provided on the side wall of the connecting seat (601) or the adjusting frame (602) along the moving direction of the adjusting frame (602). During the position adjustment process, the connecting seat (601) can cooperate with the scale bar (6021) to read the distance between the force point of the handle (1) and the axis of the handle (1).

9. The handle operating torque detection device according to claim 8, characterized in that: A drive groove (6015) is provided on the side wall of the adjustment groove (6013), the drive groove (6015) penetrates the side wall of the adjustment groove (6013), a rack (15) is provided on the adjustment frame (602) and located in the drive groove (6015) along the moving direction of the adjustment frame (602), a bracket (16) is provided on the side wall of the connecting seat (601), a gear (17) is rotatably provided on the bracket (16), and part of the gear (17) enters the drive groove (6015) and meshes with the rack (15).

10. A method of using a handle operating torque detection device, applicable to the torque detection device of claim 9, characterized in that, Includes the following steps: X1. Assembly: Connect one end of the connecting seat (601) to the outer wall of the drive shaft (501), so that the drive key (5011) on the outer wall of the drive shaft (501) is inserted into the drive groove (6012) at the end of the connecting seat (601), and make one side surface of the connecting seat (601) abut against the stop plate (504). Then, move the axial positioning seat (4) close to the drive shaft (501), so that the end of the drive shaft (501) away from the stop plate (504) is inserted into the positioning groove (401) until the end face of the axial positioning seat (4) abuts against the other side surface of the connecting seat (601). At this time, rotate the second threaded locking member (12) to lock the abutting plate (11) and the fixing plate (10). X2. Clamping: Select a suitable clamping seat (3), fix the panel (102) of the handle (1) on the clamping seat (3), and then install the clamping seat (3) coaxially on the axial positioning seat (4) to complete the clamping of the handle (1). At this time, the contact element (8) contacts the surface of the handle (101) along the length direction perpendicular to the handle (101) of the handle (1). X3, Force Detection: Start the rotational power source to drive the transmission shaft (501) to rotate by a preset angle. The transmission shaft (501) drives the pressure detection component to rotate by a preset angle. During this process, the contact member (8) applies pressure to the handle (101) of the handle (1) and drives the handle (1) to rotate by a preset angle with the same axis as the transmission shaft (501). At the same time, the pressure sensor (7) detects the reaction force applied by the handle (1) to the contact member (8). X4. Torque Calculation: Record the pressure value detected by the pressure sensor (7) to obtain the operating force, measure the distance between the force point of the handle (1) and the axis of the handle (1) to obtain the operating arm, and multiply the operating force by the operating arm to obtain the operating torque of the handle (1).

Images