Friction working condition simulation device of seat lifting mechanism

Abstract

The utility model discloses a friction working condition simulation device of a seat lifting mechanism, which belongs to the field of mechanical part testing, solves the problem of inaccurate and comprehensive testing in the prior art, and adopts the technical scheme that the friction working condition simulation device comprises a machine body, a driving mechanism arranged on the machine body, a counter-abrasion piece, a sheet metal part, a mounting shaft, a test piece and a loading unit, the test piece and the counter-abrasion piece are arranged on the mounting shaft, at least two surfaces of the test piece are in contact with the counter-abrasion piece, the sheet metal part is fixedly connected with the test piece, the loading unit applies load to the test piece through the sheet metal part, the driving mechanism drives the sheet metal part to do circumferential reciprocating motion, and the sheet metal part is driven by the driving mechanism to do circumferential reciprocating motion. And the circumferential reciprocating motion of the sheet metal part drives the test piece to do circumferential reciprocating motion relative to the abrasion piece, so that friction is generated between at least two surfaces of the test piece and the abrasion piece. According to the utility model, the test is more comprehensive, and the test accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical component testing, and in particular to a friction condition simulation device for a seat lifting mechanism. Background Technology

[0002] To facilitate use, existing seat technologies enable height adjustment by modifying the internal linkage structure of the seat to meet various user needs. For example, in car seats, height adjustment helps drivers reduce blind spots and maintain optimal visibility, provides sufficient legroom for acceleration and deceleration control, and ensures comfortable hand operation. The bushing driven by the sheet metal plays a crucial role in the seat height adjustment mechanism. Existing technologies, such as the utility model patent CN220473276U, disclose a wear resistance testing device for car seat bushings. The bushing is fitted onto a support plate, and a friction head is driven by a motor to reciprocate left and right. The friction head contacts a single surface of the bushing for testing. However, during seat height adjustment, multiple surfaces of the bushing are subjected to external forces. The aforementioned device cannot comprehensively simulate the force and friction conditions of the bushing during seat height adjustment, resulting in inaccurate and incomplete testing. Utility Model Content

[0003] The purpose of this invention is to provide a friction condition simulation device for a seat lifting mechanism, which solves the problems of inaccurate and incomplete testing in existing methods, making the testing more comprehensive and improving the accuracy of the test.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a friction simulation device for a seat lifting mechanism, comprising a body, a drive mechanism mounted on the body, a grinding component, a sheet metal component, a mounting shaft, a test piece, and a loading unit. The test piece and the grinding component are mounted on the mounting shaft, and at least two surfaces of the test piece are in contact with the grinding component. The sheet metal component and the test piece are fixedly connected. The loading unit applies a load to the test piece through the sheet metal component. The drive mechanism drives the sheet metal component to perform a circumferential reciprocating motion. The circumferential reciprocating motion of the sheet metal component causes the test piece to perform a circumferential reciprocating motion relative to the grinding component, thereby causing friction between at least two surfaces of the test piece and the grinding component.

[0005] After adopting the above technical solution, the present invention has the following advantages: at least two surfaces of the test piece (shroud) are in contact with the mating part, and the drive mechanism drives the sheet metal part to perform circumferential reciprocating motion, which drives the test piece to perform circumferential reciprocating motion relative to the mating part. This enables multiple surfaces of the test piece to rub against the mating part, which better matches the complex working conditions of the bushing under multi-faceted force and multi-faceted friction during the actual seat lifting process, greatly improving the realism and comprehensiveness of the simulation and improving the accuracy of the test.

[0006] Furthermore, the grinding component includes a first grinding block, a second grinding block, and a grinding shaft section located on the mounting shaft. The inner diameter surface of the test piece is sleeved on the grinding shaft section. The first grinding block and the second grinding block are mounted on both sides of the test piece on the mounting shaft. The first grinding block and the second grinding block are in contact with the two axial end faces of the test piece, respectively.

[0007] By adopting the aforementioned technical solution, and by setting up a first pair of grinding blocks, a second pair of grinding blocks, and a grinding shaft section, the inner diameter surface of the test piece is made in contact with the grinding shaft section, while its two axial end faces are in contact with the first pair of grinding blocks and the second pair of grinding blocks, respectively. From the inner diameter surface to the axial end faces, the actual contact state between the bushing and surrounding components in the seat lifting mechanism is simulated as comprehensively as possible. This ensures that the test covers all possible friction points. Compared with the single surface contact test of the existing technology, this greatly improves the completeness of the simulation and effectively ensures that the test results can accurately reflect the performance of the bushing under complex stress conditions.

[0008] Furthermore, the mounting shaft also includes a first shaft segment and a second shaft segment located at both ends of the grinding shaft segment. The diameter of the first shaft segment is larger than the diameter of the grinding shaft segment to form a first stepped surface at their intersection. The diameter of the grinding shaft segment is larger than the diameter of the second shaft segment to form a second stepped surface at their intersection. The first grinding block is installed between the first stepped surface and the test piece. The second grinding block is installed on the second shaft segment and spaced apart from the second stepped surface. The second grinding block presses the test piece onto the first grinding block.

[0009] Using the aforementioned technical solution, the diameter of the first shaft section is larger than that of the grinding shaft section to form the first stepped surface, which allows the first pair of grinding blocks to be more accurately positioned between the first stepped surface and the test piece, providing more stable support for one end of the test piece. At the same time, the second pair of grinding blocks are installed on the second shaft section and press the test piece tightly onto the first pair of grinding blocks. By utilizing the structural characteristics of the second stepped surface, it is possible to ensure that the test piece is reliably fixed in the axial direction as much as possible, thereby minimizing displacement or shaking of the test piece during the simulation test, further ensuring the accuracy and stability of the test, and also simplifying the installation method of the test piece.

[0010] Furthermore, the second pair of grinding blocks is detachably mounted on the second shaft segment, and the end of the second pair of grinding blocks away from the test piece is provided with a polygonal connector.

[0011] Using the aforementioned technical solution, the second pair of grinding blocks is detachably mounted on the second shaft section. When the grinding blocks wear out or become damaged after long-term use, or when it is necessary to replace the grinding blocks of different specifications or test different test pieces according to different test requirements, the operator can easily and quickly disassemble them without complicated tools or professional skills, which greatly simplifies the equipment maintenance process. Compared with integrated or difficult-to-disassemble structures, it significantly improves the maintainability of the device.

[0012] Furthermore, the machine body has a viewing window that facilitates observation of the loading unit, and the polygonal connector of the second pair of grinding blocks is located near the viewing window.

[0013] By adopting the aforementioned technical solution, the loading unit can be observed intuitively through the viewing window to monitor the test status in real time. The viewing window can also be opened directly to install or remove the second pair of grinding blocks. Operators do not need to disassemble too many internal parts of the machine body, which greatly reduces the tediousness of manual operation.

[0014] Furthermore, the driving mechanism includes a drive motor and a drive plate, the drive motor and the drive plate are connected by transmission, the sheet metal part is rotatably connected to the mounting shaft through the drive plate, the sheet metal part rotates synchronously with the drive plate and is fixedly connected to the test piece, the drive motor drives the test piece to reciprocate in a circular motion through the drive plate and the sheet metal part, and the loading unit is disposed on the drive plate.

[0015] Through the above technical solution, in the actual working condition of the seat lifting mechanism, the load force direction of the test piece is relatively fixed. Since the sheet metal part is rotating, the drive plate rotates synchronously with the sheet metal part, and the loading unit is set on the drive plate. This allows the force direction applied by the loading unit to remain relatively stable during the rotation of the sheet metal part, which can more accurately simulate the directional characteristics of the load force borne by the test piece in actual use and avoid test errors caused by changes in the direction of the force.

[0016] Furthermore, the sheet metal part is provided with a through hole for the test piece to pass through, and the two ends of the test piece are fixed to the sheet metal part by flanges.

[0017] With the above technical solution, the two ends of the test piece are fixed to the sheet metal part by flanges. Compared with the conventional sleeve or clamping method, flange fixing increases the contact area as much as possible, greatly improves the firmness of the connection, and effectively prevents the test piece from loosening, displacing or even falling off during high-speed and frequent circumferential reciprocating motion, thus providing a strong guarantee for the stability of the simulation test process.

[0018] Furthermore, the sheet metal parts and the grinding parts are spaced apart.

[0019] Through the above technical solution, the test piece and the surrounding mating parts are not tightly fitted without gaps under actual working conditions. The spacing between the sheet metal parts and the mating parts can more accurately simulate the spatial relationship under this real working condition, making the distribution and transmission of external forces such as friction and extrusion force on the test piece more realistic, and further improving the accuracy of the simulation test.

[0020] Furthermore, the loading unit includes a fixed pulley, a load loader, a fixing block, and a connecting rope. The load loader and the fixed pulley are fixed on the drive plate and located on both sides of the test piece, respectively. One end of the connecting rope is connected to the sheet metal part, and the other end of the connecting rope passes through the fixed pulley and is connected to the weighing part.

[0021] Through the above technical solution, by setting a load loader in the device, the load can be applied directly to the test piece. The fixed pulley plays a key role in changing the direction of the force in the device. One end of the connecting rope is connected to the sheet metal part, and the other end passes through the fixed pulley and is connected to the load loader, so that the loading unit can apply the load more stably along the radial direction of the test piece. It can also make the layout of the loading unit more compact and occupy less space.

[0022] Furthermore, the drive plate is rotatably connected to the mounting shaft via bearings.

[0023] Through the above technical solution, the bearing provides stable and high-precision rotational support for the drive plate, ensuring that the positional accuracy of the drive plate relative to the mounting shaft is always maintained at a high level during long-term and frequent operation. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the friction condition simulation device for a seat lifting mechanism according to the present invention.

[0026] Figure 2 This is a partial structural diagram of a friction condition simulation device for a seat lifting mechanism according to the present invention;

[0027] Figure 3 This is a partial structural diagram from another perspective of a friction condition simulation device for a seat lifting mechanism according to this utility model.

[0028] Figure 4 This is a partial structural cross-sectional view of a friction condition simulation device for a seat lifting mechanism according to the present invention;

[0029] Figure 5 In this utility model Figure 4 Enlarged view of the structure at point A in the middle;

[0030] Figure 6 This is another partial structural view of the friction condition simulation device for a seat lifting mechanism in this utility model.

[0031] Figure 7 This is a schematic diagram of the sheet metal parts and test pieces in this utility model;

[0032] In the diagram, 10 is the machine body; 11 is the mounting shaft; 12 is the limiting component; 13 is the first shaft section; 14 is the grinding shaft section; 15 is the second shaft section; 16 is the first stepped surface; 17 is the second stepped surface; 18 is the viewing window; 20 is the drive motor; 30 is the drive plate; 40 is the sheet metal part; 41 is the through hole; 51 is the first grinding block; 52 is the second grinding block; 53 is the polygonal connector; 60 is the fixed pulley; 61 is the load loader; 62 is the fixing block; 63 is the connecting rope; 80 is the bearing; 90 is the test piece; and 91 is the flange. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0034] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein.

[0035] It should be understood that in the various embodiments of this utility model, the number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this utility model.

[0036] It should be understood that in this invention, "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product or device.

[0037] It should be understood that in this utility model, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, X and / or Y can represent: X alone, X and Y simultaneously, or Y alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Contains X, Y, and Z", "Contains X, Y, and Z" means that all three X, Y, and Z are contained; "Contains X, Y, or Z" means that one of X, Y, and Z is contained; "Contains X, Y, and / or Z" means that any one, two, or three of X, Y, and Z are contained.

[0038] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0039] like Figures 1 to 7 As shown, this utility model provides a friction simulation device for a seat lifting mechanism, including a body 10, a drive mechanism mounted on the body 10, a grinding component, a sheet metal part 40, a mounting shaft 11, a test piece 90, and a loading unit. The test piece 90 and the grinding component are mounted on the mounting shaft 11, and at least two surfaces of the test piece 90 are in contact with the grinding component. The sheet metal part 40 and the test piece 90 are fixedly connected. The loading unit applies a load to the test piece 90 through the sheet metal part 40. The drive mechanism drives the sheet metal part 40 to perform circumferential reciprocating motion. The circumferential reciprocating motion of the sheet metal part 40 causes the test piece 90 to perform circumferential reciprocating motion relative to the grinding component, so that at least two surfaces of the test piece 90 rub against the grinding component.

[0040] At least two surfaces of the test piece 90 (bushel) are in contact with the mating part, and the drive mechanism drives the sheet metal part 40 to perform a circumferential reciprocating motion, causing the test piece 90 to reciprocate relative to the mating part. This allows multiple surfaces of the test piece 90 to rub against the mating part, which better reflects the complex working conditions of the bushing during the actual seat lifting process, involving multiple forces and frictions. This greatly improves the realism and comprehensiveness of the simulation and enhances the accuracy of the test.

[0041] In the actual working condition of the seat lifting mechanism, the load force direction of the test piece 90 is relatively fixed. Since the sheet metal part 40 is rotating, in this application, the drive mechanism includes a drive motor 20 and a drive plate 30. The drive motor 20 and the drive plate 30 are connected by transmission. The sheet metal part 40 is rotatably connected to the mounting shaft 11 through the drive plate 30. The sheet metal part 40 and the drive plate 30 rotate synchronously and are fixedly connected to the test piece 90. The drive motor 20 drives the test piece 90 to reciprocate in a circular motion through the drive plate 30 and the sheet metal part 40. The loading unit is set on the drive plate 30. This allows the force direction applied by the loading unit to remain relatively stable during the rotation of the sheet metal part 40, which can more accurately simulate the directional characteristics of the load force borne by the test piece 90 in actual use and avoid test errors caused by changes in the direction of the force.

[0042] Specifically, the drive plate 30 is rotatably connected to the mounting shaft 11 via a bearing 80. The bearing 80 provides stable and high-precision rotational support for the drive plate 30, ensuring that its positional accuracy relative to the mounting shaft 11 remains at a high level during long-term, frequent operation. Furthermore, the drive plate 30 is equipped with a limiting member 12. One end of the sheet metal part 40 is fixedly connected to the test piece 90, while the other end of the sheet metal part 40 is suspended and in contact with the limiting member 12, allowing the sheet metal part 40 to rotate synchronously as the drive plate 30 rotates. The suspended design of one end of the sheet metal part 40 also provides the necessary space and freedom for the loading unit to apply the load.

[0043] To simulate the actual contact state between the bushing and surrounding components in the seat lifting mechanism as comprehensively as possible, the grinding component includes a first pair of grinding blocks 51, a second pair of grinding blocks 52, and a grinding shaft section 14 located on the mounting shaft 11. The inner diameter surface of the test piece 90 is fitted onto the grinding shaft section 14. The first pair of grinding blocks 51 and the second pair of grinding blocks 52 are mounted on both sides of the test piece 90 on the mounting shaft 11. The first pair of grinding blocks 51 and the second pair of grinding blocks 52 respectively contact the two end faces of the test piece 90 axially, thereby ensuring that the test covers all possible friction points as much as possible. Compared with the single surface contact test of the prior art, this greatly improves the completeness of the simulation and effectively ensures that the test results can accurately reflect the performance of the bushing under complex stress conditions.

[0044] To minimize displacement or shaking of the test piece 90 during simulation testing, the mounting shaft 11 also includes a first shaft section 13 and a second shaft section 15 located at both ends of the grinding shaft section 14. The diameter of the first shaft section 13 is larger than the diameter of the grinding shaft section 14 to form a first step surface 16 at their intersection. The diameter of the grinding shaft section 14 is larger than the diameter of the second shaft section 15 to form a second step surface 17 at their intersection. The first pair of grinding blocks 51 are installed between the first step surface 16 and the test piece 90 to provide relatively stable support for one end of the test piece 90. The second pair of grinding blocks 52 are installed on the second shaft section 15 and spaced apart from the second step surface 17. The second pair of grinding blocks 52 press the test piece 90 tightly onto the first pair of grinding blocks 51, ensuring that the test piece 90 is reliably fixed in the axial direction as much as possible, further ensuring the accuracy and stability of the test, and also simplifying the installation method of the test piece 90.

[0045] Furthermore, the sheet metal part 40 is provided with a through hole 41 for the test piece 90 to pass through, and both ends of the test piece 90 are fixed to the sheet metal part 40 by flanges 91. Compared with conventional sleeve or clamping methods, the flanges 91 fixation increases the contact area as much as possible, greatly improves the firmness of the connection, and effectively prevents the test piece 90 from loosening, displacing or even falling off during high-speed and frequent circumferential reciprocating motion, thus providing a strong guarantee for the stability of the simulation test process.

[0046] In actual working conditions, the test piece 90 and its surrounding mating parts are not tightly fitted without gaps. Therefore, in this application, the sheet metal part 40 and the mating part are spaced apart. This can more accurately simulate the spatial relationship under real working conditions, making the distribution and transmission of external forces such as friction and extrusion forces on the test piece 90 more realistic, and further improving the accuracy of the simulation test.

[0047] In existing technologies, grinding parts are typically riveted, which is complex to disassemble and install, and may even require destructive disassembly. Therefore, in this application, the second pair of grinding blocks 52 is detachably mounted on the second shaft section 15, and the end of the second pair of grinding blocks 52 furthest from the test piece 90 is provided with a polygonal connector 53. When the second pair of grinding blocks 52 wears or is damaged after long-term use, or when it is necessary to replace the second pair of grinding blocks 52 with different specifications or test different test pieces 90 according to different testing requirements, the operator can easily and quickly disassemble them without complicated tools or professional skills, greatly simplifying the equipment maintenance process. Compared with integrated or difficult-to-disassemble structures, this significantly improves the maintainability of the device.

[0048] It should be noted that the second pair of grinding blocks 52 is provided with threaded holes, and the second shaft section 15 is provided with threads. The second pair of grinding blocks 52 and the second shaft section 15 can be threadedly connected. The second pair of grinding blocks 52 can be disassembled and assembled using a torque wrench. The torque wrench can also reflect the real-time torque, thereby avoiding destructive disassembly and assembly of the sheet metal parts 40 and the grinding parts, allowing for reuse, saving resources and protecting the environment.

[0049] To facilitate observation of the test situation, a viewing window 18 is provided on the machine body 10 to facilitate observation of the loading unit. The multi-angle connector 53 of the second pair of grinding blocks 52 is close to the viewing window 18. The loading unit can be observed intuitively through the viewing window 18 to keep track of the test situation in real time. The second pair of grinding blocks 52 can also be installed or removed directly by opening the viewing window 18. Operators do not need to disassemble too many internal parts of the machine body 10, which greatly reduces the tediousness of manual operation.

[0050] In this application, the loading unit includes a fixed pulley 60, a load loader 61, a fixing block 62, and a connecting rope 63. The load loader 61 and the fixed pulley 60 are fixed on the drive plate 30 and located on both sides of the test piece 90, respectively. One end of the connecting rope 63 is connected to the sheet metal part 40, and the other end of the connecting rope 63 passes through the fixed pulley 60 and is connected to the weighing component. By setting the load loader 61 in the device, the load loader 61 can directly apply a load to the test piece 90. The fixed pulley 60 plays a key role in changing the direction of the force in the device. One end of the connecting rope 63 is connected to the sheet metal part 40, and the other end passes through the fixed pulley 60 and is connected to the load loader 61. This allows the loading unit to apply a load more stably along the radial direction of the test piece 90, and also makes the layout of the loading unit more compact and occupies less space.

[0051] Furthermore, in this embodiment, in addition to applying load, the load loader 61 can also measure the load applied to the test piece 90. In order to make the test data more intuitive, the load loader 61 can also be provided with a display screen to display the size of the load applied to the test piece 90.

[0052] It should be noted that in other embodiments, the load loader 61 may only perform the function of applying load; the fewer the functions, the simpler the structure.

[0053] It should be noted that the seats tested by the seat lifting mechanism working condition simulation device are not limited to car seats, but can also be applied to various operating table seats or seats used in daily office work.

[0054] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. A device for simulating the friction conditions of a seat lifting mechanism, characterized in that, The device includes a body, a drive mechanism mounted on the body, a grinding element, a sheet metal part, a mounting shaft, a test piece, and a loading unit. The test piece and the grinding element are mounted on the mounting shaft, with at least two surfaces of the test piece in contact with the grinding element. The sheet metal part and the test piece are fixedly connected. The loading unit applies a load to the test piece through the sheet metal part. The drive mechanism drives the sheet metal part to perform a circumferential reciprocating motion. The circumferential reciprocating motion of the sheet metal part causes the test piece to perform a circumferential reciprocating motion relative to the grinding element, causing friction between at least two surfaces of the test piece and the grinding element.

2. The friction condition simulation device for a seat lifting mechanism according to claim 1, characterized in that, The grinding components include a first grinding block, a second grinding block, and a grinding shaft section located on the mounting shaft. The inner diameter surface of the test piece is fitted onto the grinding shaft section. The first grinding block and the second grinding block are mounted on both sides of the test piece on the mounting shaft. The first grinding block and the second grinding block are in contact with the two axial end faces of the test piece, respectively.

3. The friction condition simulation device for a seat lifting mechanism according to claim 2, characterized in that, The mounting shaft also includes a first shaft section and a second shaft section located at both ends of the grinding shaft section. The diameter of the first shaft section is larger than the diameter of the grinding shaft section to form a first stepped surface at their intersection. The diameter of the grinding shaft section is larger than the diameter of the second shaft section to form a second stepped surface at their intersection. The first grinding block is installed between the first stepped surface and the test piece. The second grinding block is installed on the second shaft section and spaced apart from the second stepped surface. The second grinding block presses the test piece onto the first grinding block.

4. The friction condition simulation device for a seat lifting mechanism according to claim 3, characterized in that, The second pair of grinding blocks is detachably mounted on the second shaft section, and the end of the second pair of grinding blocks away from the test piece is provided with a polygonal connector.

5. The friction condition simulation device for a seat lifting mechanism according to claim 4, characterized in that, The machine body is provided with a viewing window that facilitates observation of the loading unit, and the polygonal connector of the second pair of grinding blocks is close to the viewing window.

6. The friction condition simulation device for a seat lifting mechanism according to claim 1, characterized in that, The driving mechanism includes a drive motor and a drive plate, which are connected by transmission. The sheet metal part is rotatably connected to the mounting shaft through the drive plate. The sheet metal part rotates synchronously with the drive plate and is fixedly connected to the test piece. The drive motor drives the test piece to reciprocate in a circular motion through the drive plate and the sheet metal part. The loading unit is located on the drive plate.

7. The friction condition simulation device for a seat lifting mechanism according to claim 6, characterized in that, The sheet metal part is provided with a through hole for the test piece to pass through, and the two ends of the test piece are fixed to the sheet metal part by flanges.

8. The friction condition simulation device for a seat lifting mechanism according to claim 6, characterized in that, The sheet metal parts and the grinding parts are spaced apart.

9. The friction condition simulation device for a seat lifting mechanism according to claim 6, characterized in that, The loading unit includes a fixed pulley, a load loader, a fixing block, and a connecting rope. The load loader and the fixed pulley are fixed on the drive plate and located on both sides of the test piece. One end of the connecting rope is connected to the sheet metal part, and the other end of the connecting rope passes through the fixed pulley and is connected to the weighing part.

10. The friction condition simulation device for a seat lifting mechanism according to claim 6, characterized in that, The drive plate is rotatably connected to the mounting shaft via bearings.

Images