Device for measuring rebound resilience of seat foam

Abstract

The invention provides a device for measuring the rebound resilience of seat foam. The measuring device comprises a base; the supporting assembly is connected with the base and comprises a first supporting rod, a second supporting rod and a third supporting rod, the first supporting rod extends in the vertical direction, the second supporting rod and the third supporting rod extend in the horizontal direction, and the second supporting rod is movably arranged in the height direction of the first supporting rod; a first included angle is formed between the third supporting rod and the second supporting rod, and the third supporting rod is movably arranged in the length direction of the second supporting rod; the measuring assembly is connected with the third supporting rod, the measuring assembly comprises a plurality of displacement sensors, and the plurality of displacement sensors are rotatably arranged around the axis of the third supporting rod. According to the measuring device in the scheme, the technical problem that the deviation between the test data of the foam performance detection equipment and the actual use working condition is large in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the technical field of measuring the resilience performance of seat foam, and more specifically, to a device for measuring the resilience performance of seat foam. Background Technology

[0002] In the development of automotive seats, the resilience and durability of foam materials are key indicators affecting ride comfort and product lifespan. Most foam performance testing equipment only supports unidirectional vertical compression testing along the Z-axis. The test objects are limited to individual sponge samples with regular geometric shapes, making in-situ measurements on actual seat assemblies difficult. Furthermore, it cannot simulate the complex load distribution of multi-point human contact, nor can it achieve precise multi-angle and multi-directional positioning and parameter recording. This results in significant deviations between test data and actual usage conditions, hindering accurate seat structural design optimization.

[0003] There is currently no effective solution to the technical problem that the test data of existing foam performance testing equipment deviates significantly from actual operating conditions. Summary of the Invention

[0004] The main objective of this invention is to provide a device for measuring the resilience performance of seat foam, so as to solve the technical problem that the test data of existing foam performance testing equipment deviates significantly from the actual use conditions.

[0005] To achieve the above objectives, according to one aspect of the present invention, a seat foam resilience measuring device is provided, comprising: a base; a support assembly connected to the base, the support assembly including a first support rod, a second support rod, and a third support rod, the first support rod extending vertically, the second and third support rods extending horizontally, the second support rod being movably disposed along the height direction of the first support rod, the third support rod being disposed at a first angle to the second support rod, and the third support rod being movably disposed along the length direction of the second support rod; and a measuring assembly connected to the third support rod, the measuring assembly including a plurality of displacement sensors rotatably disposed about the axis of the third support rod.

[0006] Furthermore, the third support rod is rotatably arranged relative to the second support rod, and the rotation axis of the third support rod is collinear with the axis of the third support rod. The measuring component also includes: a support frame connected to the third support rod, multiple displacement sensors connected to the support frame, and the multiple displacement sensors are adjustable in position relative to the support frame.

[0007] Furthermore, the support frame includes: a connecting rod, which is connected to a third support rod, and the connecting rod and the third support rod are arranged at a second included angle; a telescopic assembly, which includes a first telescopic rod, which includes a first fixed section and a first movable section, the first fixed section is connected to the connecting rod, the first movable section is movably arranged along the length direction of the first fixed section, and a displacement sensor is connected to the first movable section.

[0008] Furthermore, the first movable segment comprises two segments: one connected to the first end of the first fixed segment, and the other connected to the second end of the first fixed segment. The telescopic assembly further includes: a second telescopic rod comprising a second fixed segment and a second movable segment; the second fixed segment is connected to one of the two first movable segments; the second fixed segment is set at a third angle to the first movable segment; the second movable segment is movably arranged along the length direction of the second fixed segment; and a portion of the displacement sensor is connected to the first movable segment via the second movable segment. A third telescopic rod comprising a third fixed segment and a third movable segment; the third fixed segment is connected to the other of the two first movable segments; the third fixed segment is set at a fourth angle to the first movable segment; the third movable segment is movably arranged along the length direction of the third fixed segment; and a portion of the displacement sensor is connected to the first movable segment via the third movable segment.

[0009] Furthermore, some displacement sensors are movably disposed relative to the second movable segment in a first direction, the first direction being perpendicular to the length direction of the second movable segment; and / or, some displacement sensors are movably disposed relative to the third movable segment in a second direction, the second direction being perpendicular to the length direction of the third movable segment.

[0010] Furthermore, the two first movable sections of the first telescopic rod are connected by a first locking mechanism, which includes: a first locking wheel, the first locking wheel having a first rotating rod, the first locking wheel being rotatably connected to the first fixed section through the first rotating rod, the first locking wheel being located within the first fixed section; a first meshing tooth, the first meshing tooth being connected to one of the two first movable sections, the first meshing tooth meshing with the first locking wheel; and a second meshing tooth, the second meshing tooth being connected to the other of the two first movable sections, the second meshing tooth meshing with the first locking wheel, the second meshing tooth being arranged opposite to the first meshing tooth along the radial direction of the first locking wheel.

[0011] Furthermore, the third support rod is connected to the second support rod via the first movable block, the first movable block is connected to the second support rod via the second locking mechanism, the second locking mechanism has a first unlocking position that allows the first movable block to move along the length direction of the second support rod, the third support rod is connected to the first movable block via the third locking mechanism, the third locking mechanism has a second unlocking position that allows the third support rod to rotate relative to the first movable block.

[0012] Furthermore, the first movable block is provided with an angle disk, and part of the third support rod passes through the center of the angle disk. The end of the third support rod away from the first movable block is provided with a rotating pointer, and the end of the rotating pointer extends to the scale ring on the angle disk.

[0013] Furthermore, the second locking mechanism and / or the third locking mechanism are fastening screws, which are threadedly connected to the first movable block.

[0014] Furthermore, the second support rod is connected to the first support rod via the second movable block, and the second movable block is connected to the first support rod via the fourth locking mechanism. The fourth locking mechanism includes: a first bevel gear, which is rotatably connected to the second movable block, and the inner ring of the first bevel gear is threadedly connected to the first support rod; and a second bevel gear, which is rotatably connected to the second movable block via the second rotating rod, and the second bevel gear meshes with the first bevel gear.

[0015] Applying the technical solution of this invention, the measuring component is connected to the base via a support component. When measuring the rebound performance of the seat foam, the measuring component can be connected to the actual vehicle via the base to achieve in-situ measurement of the actual seat assembly. The height of the second support rod is adjusted to adapt to different seat heights, the horizontal position of the third support rod is adjusted to adapt to different measurement areas of the seat, and the rotation angle of the displacement sensor is adjusted to adapt to multi-angle and multi-directional measurements of the seat. The measuring component is equipped with multiple displacement sensors to measure the rebound amount of the seat at multiple points, simulating the complex load distribution of multi-point contact with the human body. The measuring device in the above solution, through position adjustment to adapt to in-situ, multi-angle, and multi-directional measurements of the seat, can not only collect the displacement changes at each point but also continuously record the dynamic performance parameters of the foam during load release, thereby obtaining material response characteristics that cannot be captured by traditional static measurements. This provides a quantitative basis for seat design and solves the technical problem of large deviations between test data and actual operating conditions in existing foam performance testing equipment. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A schematic diagram of the structure of the seat foam resilience measuring device of the present invention is shown;

[0018] Figure 2 A schematic diagram of the structure between the first movable block, the second support rod, and the third support rod in this invention is shown.

[0019] Figure 3A schematic diagram of the measuring component in this invention is shown;

[0020] Figure 4 A schematic diagram of the structure of the first locking mechanism in this invention is shown;

[0021] Figure 5 A schematic diagram of the fourth locking mechanism in this invention is shown;

[0022] Figure 6 This diagram illustrates the first usage state of the seat foam resilience performance measuring device of the present invention.

[0023] Figure 7 A schematic diagram of the second usage state of the seat foam resilience measuring device of the present invention is shown.

[0024] The above figures include the following reference numerals:

[0025] 1. Base;

[0026] 2. First support rod;

[0027] 3. Second support rod;

[0028] 31. Second movable block; 32. Fourth locking mechanism; 321. First bevel gear; 322. Second bevel gear; 323. Second rotating rod; 324. Bearing;

[0029] 4. Third support rod;

[0030] 41. First movable block; 411. Second locking mechanism; 412. Third locking mechanism; 42. Angle disk; 421. First recording pointer; 422. Second recording pointer; 43. Rotation pointer;

[0031] 5. Displacement sensor;

[0032] 6. Support frame;

[0033] 61. Connecting rod;

[0034] 62. First telescopic pole; 621. First fixed section; 622. First movable section;

[0035] 63. Second telescopic rod; 631. Second fixed section; 632. Second movable section;

[0036] 64. Third telescopic rod; 641. Third fixed section; 642. Third movable section;

[0037] 65. Install rings;

[0038] 7. First locking mechanism;

[0039] 71. First locking wheel; 72. First rotating rod; 73. First meshing tooth; 74. Second meshing tooth;

[0040] 8. Fifth locking mechanism. Detailed Implementation

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] 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 according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0044] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0045] Combination Figures 1 to 7 As shown in the specific embodiment of this application, a device for measuring the resilience performance of seat foam is provided.

[0046] Specifically, the seat foam resilience measurement device includes: a base 1, a support assembly, and a measuring assembly. The support assembly is connected to the base 1 and includes a first support rod 2, a second support rod 3, and a third support rod 4. The first support rod 2 extends vertically, while the second and third support rods 3 and 4 extend horizontally. The second support rod 3 is movably positioned along the height of the first support rod 2, and the third support rod 4 forms a first angle with the second support rod 3, being movably positioned along the length of the second support rod 3. The measuring assembly is connected to the third support rod 4 and includes multiple displacement sensors 5, which are rotatably arranged around the axis of the third support rod 4.

[0047] In the embodiments of this application, the measuring component is connected to the base 1 via a support component. When measuring the rebound performance of the seat foam, the measuring component can be connected to the actual vehicle via the base 1 to achieve in-situ measurement of the actual seat assembly. The height of the second support rod 3 is adjusted to accommodate different seat heights, the horizontal position of the third support rod 4 is adjusted to accommodate different measurement areas of the seat, and the rotation angle of the displacement sensor 5 is adjusted to accommodate multi-angle and multi-directional measurements of the seat. The measuring component is equipped with multiple displacement sensors 5, which measure the rebound amount of the seat at multiple points to simulate the complex load distribution of multi-point contact with the human body. The measuring device in the above scheme, through position adjustment to adapt to in-situ, multi-angle, and multi-directional measurements of the seat, can not only collect the displacement changes at each point but also continuously record the dynamic performance parameters of the foam during load release, thereby obtaining material response characteristics that cannot be captured by traditional static measurements. This provides a quantitative basis for seat design and solves the technical problem of large deviations between test data and actual operating conditions in existing foam performance testing equipment.

[0048] It should be noted that the seat foam resilience measuring device in the embodiments of this application can measure not only the resilience of the seat cushion, but also the resilience of the seat back.

[0049] In one exemplary embodiment of this application, the support assembly is connected to the base 1 via a first support rod 2, which extends vertically (Z-axis). A second support rod 3 is connected to the first support rod 2 and extends horizontally (X-axis). A third support rod 4 is connected to the second support rod 3 and extends horizontally (Y-axis). The measuring assembly is connected to the third support rod 4 via a support frame 6, which is equipped with multiple displacement sensors 5.

[0050] Furthermore, the third support rod 4 is rotatably arranged relative to the second support rod 3, and the rotation axis of the third support rod 4 is collinear with the axis of the third support rod 4. The measuring component also includes: a support frame 6, which is connected to the third support rod 4, and multiple displacement sensors 5 are connected to the support frame 6. The multiple displacement sensors 5 are adjustable in position relative to the support frame 6.

[0051] In the embodiments of this application, the measuring component is connected to the third support rod 4 via a support frame 6. Multiple displacement sensors 5 are integrated on the support frame 6. The third support rod 4 is rotatably arranged relative to the second support rod 3, meaning that rotating the third support rod 4 allows for overall angle adjustment of the measuring component and synchronous angle adjustment of multiple displacement sensors 5 to adapt to different tilt angles of the seat. This enables the displacement sensors 5 to accurately align with different key stress areas on the seat, eliminating the need for individual three-dimensional spatial calibration of each displacement sensor 5. This significantly improves operational convenience and simplifies the assembly structure of the measuring component. The positions of the multiple displacement sensors 5 relative to the support frame 6 are adjustable. After the overall position of the measuring component is adjusted, individual displacement sensors 5 can be fine-tuned to precisely adapt to the key stress areas of the seat cushion or seat back, ensuring measurement accuracy.

[0052] like Figure 1 As shown, the third support rod 4 is rotatably connected to the second support rod 3, and the third support rod 4 is perpendicular to the second support rod 3. The second support rod 3 extends along the X-axis, and the third support rod 4 extends along the Y-axis. The measuring component is connected to the third support rod 4 via a support frame 6, on which multiple displacement sensors 5 are integrated. The rotation axis of the third support rod 4 is collinear with the axis of the third support rod 4, meaning that the angle of the multiple displacement sensors 5 can be adjusted by rotating the third support rod 4 around the Y-axis. The multiple displacement sensors 5 are adjustable in position relative to the support frame 6, meaning that the position of the multiple displacement sensors 5 can be adjusted on the support frame 6 to precisely adapt to the key stress areas of the seat cushion or seat back.

[0053] As an alternative implementation, each displacement sensor 5 integrated on the measuring assembly can independently adjust its rotation angle to adapt to different angles of the seat. For example, each displacement sensor 5 is connected to the third support rod 4 via a support frame 6, and each displacement sensor 5 is rotatably connected to the support frame 6 via a rotating shaft. Adjusting the rotation of each displacement sensor 5 relative to the support frame 6 achieves angle adjustment for each displacement sensor 5.

[0054] Furthermore, the support frame 6 includes a connecting rod 61 and a telescopic assembly. The connecting rod 61 is connected to the third support rod 4, and the connecting rod 61 and the third support rod 4 are arranged at a second included angle. The telescopic assembly includes a first telescopic rod 62, which includes a first fixed section 621 and a first movable section 622. The first fixed section 621 is connected to the connecting rod 61, and the first movable section 622 is movably arranged along the length direction of the first fixed section 621. The displacement sensor 5 is connected to the first movable section 622.

[0055] In the embodiments of this application, the first telescopic rod is connected to the third support rod 4 via the connecting rod 61, and the displacement sensor 5 is connected to the first movable section 622 of the first telescopic rod. The displacement sensor 5 is movably set along the length direction of the first fixed section 621. That is, after the overall position of the measuring component is determined, the probe of the displacement sensor 5 is set perpendicular to the area to be measured. By moving the first movable section 622, the position of the displacement sensor 5 on the surface to be measured is further adjusted so that the displacement sensor 5 is precisely aligned with the key force area of ​​the seat.

[0056] Furthermore, there are two first movable segments 622. One first movable segment 622 is connected to the first end of the first fixed segment 621, and the other first movable segment 622 is connected to the second end of the first fixed segment 621. The telescopic assembly also includes a second telescopic rod 63 and a third telescopic rod 64. The second telescopic rod 63 includes a second fixed segment 631 and a second movable segment 632. The second fixed segment 631 is connected to one of the two first movable segments 622. The second fixed segment 631 and the first movable segment 622 are arranged at a third angle. The second movable segment 632 is movably arranged along the length direction of the second fixed segment 631. Part of the displacement sensor 5 is connected to the first movable segment 622 through the second movable segment 632. The third telescopic rod 64 includes a third fixed section 641 and a third movable section 642. The third fixed section 641 is connected to the other of the two first movable sections 622. The third fixed section 641 and the first movable section 622 are set at a fourth angle. The third movable section 642 is movably set along the length direction of the third fixed section 641. Part of the displacement sensor 5 is connected to the first movable section 622 through the third movable section 642.

[0057] In the embodiments of this application, the first telescopic rod 62, the second telescopic rod 63, and the third telescopic rod 64 constitute a telescopic structure. This telescopic structure is connected to the displacement sensor 5. The telescopic structure can extend and retract in multiple directions to adjust the position of the displacement sensor 5 from multiple dimensions so that the displacement sensor 5 can adapt to multiple key force areas of the seat.

[0058] like Figure 1 , Figure 3As shown, multiple displacement sensors 5 are connected to a third support rod 4 via a support frame 6. The support frame 6 includes a connecting rod 61 and a telescopic assembly. The connecting rod 61 is fixedly connected to the third support rod 4 and is perpendicular to the third support rod 4. The telescopic assembly includes a first telescopic rod 62, a second telescopic rod 63, and a third telescopic rod 64. The first telescopic rod 62, the second telescopic rod 63, and the third telescopic rod 64 are connected to form an H-shaped structure. The first telescopic rod 62 includes a first fixed section 621 and two first movable sections 622. The first fixed section 621 is fixedly connected to the middle of the connecting rod 61 and is perpendicular to the connecting rod 61. The two first movable sections 622 are located at both ends of the first fixed section 621 and are movably arranged along the length of the first fixed section 621. The second telescopic rod 63 includes a second fixed section 631 and two second movable sections 632. The second fixed section 631 is fixedly connected to the end of one of the first movable sections 622. The second fixed section 631 is perpendicular to the first movable section 622. The two second movable sections 632 are located at both ends of the second fixed section 631 and are movably arranged along the length of the second fixed section 631. The third telescopic rod 64 includes a third fixed section 641 and two third movable sections 642. The third fixed section 641 is fixedly connected to the end of the other first movable section 622. The third fixed section 641 is perpendicular to the first movable section 622. The two third movable sections 642 are located at both ends of the third fixed section 641 and are movably arranged along the length of the third fixed section 641. The measuring component includes four displacement sensors 5, with one displacement sensor 5 at each end of the two second movable sections 632 and the two third movable sections 642.

[0059] Furthermore, a portion of the displacement sensor 5 is movably disposed relative to the second movable segment 632 in a first direction, the first direction being perpendicular to the length direction of the second movable segment 632; and / or, a portion of the displacement sensor 5 is movably disposed relative to the third movable segment 642 in a second direction, the second direction being perpendicular to the length direction of the third movable segment 642.

[0060] In the embodiments of this application, the displacement sensor 5 on the second movable segment 632 is movably disposed in the vertical direction of the second movable segment 632, and the displacement sensor 5 on the third movable segment 642 is movably disposed in the vertical direction of the third movable segment 642, so as to further adjust the vertical distance between the displacement sensor 5 and the key force area, thereby achieving accurate measurement of the seat rebound amount.

[0061] like Figure 3As shown, a mounting ring 65 is fitted at the end of the second movable segment 632. The axis of the mounting ring 65 is perpendicular to the length direction of the second movable segment 632. The displacement sensor 5 is fitted onto the mounting ring 65, and the mounting ring 65 is locked to the displacement sensor 5 by a fifth locking mechanism. A mounting ring 65 is fitted at the end of the third movable segment 642. The axis of the mounting ring 65 is perpendicular to the length direction of the third movable segment 642. The displacement sensor 5 extends into the mounting ring 65, and the mounting ring 65 is locked to the displacement sensor 5 by a fifth locking mechanism 8. The fifth locking mechanism 8 is a fastening screw. A threaded hole is provided on the side wall of the mounting ring 65. The fastening screw passes through the threaded hole of the mounting ring 65 and is threadedly connected to the mounting ring 65. By tightening the fastening screw, the fastening screw abuts against the displacement sensor 5, thereby locking the displacement sensor 5.

[0062] Furthermore, the two first movable sections 622 of the first telescopic rod are connected by a first locking mechanism 7, which includes a first locking wheel 71, a first engaging tooth 73, and a second engaging tooth 74. The first locking wheel 71 is provided with a first rotating rod 72, and is rotatably connected to the first fixed section 621 via the first rotating rod 72. The first locking wheel 71 is located within the first fixed section 621. The first engaging tooth 73 is connected to one of the two movable sections 622 and engages with the first locking wheel 71. The second engaging tooth 74 is connected to the other of the two movable sections 622 and engages with the first locking wheel 71. The second engaging tooth 74 is arranged radially opposite to the first engaging tooth 73 of the first locking wheel 71.

[0063] In the embodiments of this application, the first meshing tooth 73 and the second meshing tooth 74 are arranged radially opposite to each other along the first locking wheel 71. The first locking wheel 71 is located between the first meshing tooth 73 and the second meshing tooth 74. By rotating the first locking wheel 71, bidirectional coordinated movement of the first meshing tooth 73 and the second meshing tooth 74 can be achieved, that is, symmetrical adjustment of the two displacement sensors 5 can be realized. The adjustment structure and adjustment direction are simple and reliable. The locking wheel and the meshing tooth are engaged and connected, achieving synchronous locking on the basis of transmission, without the need for an additional locking mechanism.

[0064] like Figure 4As shown, a first locking mechanism 7 is provided on the first telescopic rod. The first telescopic rod includes two first movable sections 622 and a first fixed section 621. The two first movable sections 622 are respectively located at both ends of the first fixed section 621. Part of the first movable section 622 extends into the first fixed section 621 and is slidably connected to the first fixed section 621. The first locking mechanism 7 includes a first locking wheel 71, a first engaging tooth 73, and a second engaging tooth 74. The first engaging tooth 73 is connected to the end of one of the first movable sections 622 and extends along the length direction of the first movable section 622. The outer wall of the first engaging tooth 73 is provided with a first guide block, and the inner wall of the first fixed section 621 is provided with a first guide groove. The first guide groove extends along the length direction of the first fixed section 621. The first engaging tooth 73 extends into the first fixed section 621, and at least part of the first guide block is inserted into the first guide groove of the first fixed section 621, thereby realizing the slidable connection between the first movable section 622 and the first fixed section 621. The second meshing tooth 74 is connected to the end of another first movable segment 622. The second meshing tooth 74 extends along the length direction of the first movable segment 622. The outer wall of the second meshing tooth 74 is provided with a second guide block. The inner wall of the first fixed segment 621 is provided with a second guide groove. The second guide groove extends along the length direction of the first fixed segment 621. The second guide groove and the first guide groove are arranged opposite to each other along the radial direction of the first fixed segment 621. The second meshing tooth 74 extends into the first fixed segment 621, and at least part of the second guide block is inserted into the second guide groove of the first fixed segment 621, thereby realizing the sliding connection between the first movable segment 622 and the first fixed segment 621. The first locking wheel 71 is provided with a first rotating rod 72. The first locking wheel 71 is rotatably connected to the first fixed section 621 through the first rotating rod 72. The first locking wheel 71 extends into the first fixed section 621 and is located between the first meshing tooth 73 and the second meshing tooth 74. The first meshing tooth 73 and the second meshing tooth 74 are respectively meshed with the first locking wheel 71. At least part of the first rotating rod 72 is located outside the first fixed section 621. By rotating the first rotating rod 72, the first meshing tooth 73 and the second meshing tooth 74 can move in coordination, that is, move closer to each other and move away from each other, thereby realizing the coordinated movement of the two displacement sensors 5.

[0065] Furthermore, the second telescopic rod 63 is provided with a first locking mechanism 7 to enable the coordinated movement of the two second movable sections 632. Similarly, the third telescopic rod 64 is provided with a first locking mechanism 7 to enable the coordinated movement of the two third movable sections 642.

[0066] Furthermore, the third support rod 4 is connected to the second support rod 3 via the first movable block 41. The first movable block 41 is connected to the second support rod 3 via the second locking mechanism 411. The second locking mechanism 411 has a first unlocking position that allows the first movable block 41 to move along the length direction of the second support rod 3. The third support rod 4 is connected to the first movable block 41 via the third locking mechanism 412. The third locking mechanism 412 has a second unlocking position that allows the third support rod 4 to rotate relative to the first movable block 41.

[0067] In the embodiments of this application, the first movable block 41 serves as a transition piece connecting the second support rod 3 and the third support rod 4. The first movable block 41 integrates a locking mechanism that locks with the third support rod 4 and the second support rod 3. By adjusting the corresponding locking mechanism, the horizontal movement and rotation of the displacement sensor 5 can be achieved. The above connection method achieves the decoupling of the two free ends, and the adjustment of the two dimensions does not interfere with each other, which is simple and reliable.

[0068] In one exemplary embodiment of this application, the second locking mechanism 411 and / or the third locking mechanism 412 are fastening screws, which are threadedly connected to the first movable block 41.

[0069] like Figure 2 As shown, the second locking mechanism 411 is a fastening screw integrated on the first movable block 41. This fastening screw is threadedly connected to the first movable block 41, and locking and unlocking of the first movable block 41 and the second support rod 3 are achieved by tightening this fastening screw. When the second locking mechanism 411 is pressed against the second support rod 3, it restricts the movement of the first movable block 41 along the length direction of the second support rod 3, thus locking the first movable block 41 and the second support rod 3. When the second locking mechanism 411 is separated from the second support rod 3, the first movable block 41 can move along the length direction of the second support rod 3 to achieve horizontal position (X-axis) adjustment of the third telescopic rod 64. The second support rod 3 is provided with a scale to record the position and movement distance of the first movable block 41 for easy resetting.

[0070] like Figure 2 As shown, the third locking mechanism 412 is a fastening screw integrated on the first movable block 41. This fastening screw is threadedly connected to the first movable block 41, and locking and unlocking of the first movable block 41 and the third support rod 4 are achieved by tightening this fastening screw. When the third locking mechanism 412 is pressed against the third support rod 4, it restricts the rotation of the third support rod 4 relative to the first movable block 41 and restricts the rotation of the third support rod 4 around the Y-axis, thus achieving the locking of the first movable block 41 and the third support rod 4. When the third locking mechanism 412 is separated from the third support rod 4, the third support rod 4 can rotate around the Y-axis to achieve angle adjustment of the measuring component.

[0071] Furthermore, the first movable block 41 is provided with an angle disk 42, and a portion of the third support rod 4 passes through the center of the angle disk 42. The end of the third support rod 4 away from the first movable block 41 is provided with a rotating pointer 43, and the end of the rotating pointer 43 extends to the scale ring on the angle disk 42.

[0072] In the embodiments of this application, the angle disk 42 is provided to precisely adjust the rotation angle of the third support rod 4 and the measuring component to ensure the accuracy of the measurement data.

[0073] like Figure 2 As shown, the angle disk 42 is connected to the top of the first movable block 41 via a connecting plate. A through hole is provided at the center of the angle disk 42. The axis of the angle disk 42 is collinear with the axis of the third support rod 4. Part of the third support rod 4 passes through the through hole. A rotating pointer 43 is fixed to the end of the third support rod 4 away from the first movable block 41. The end of the rotating pointer 43 extends to the scale ring on the angle disk 42 to align with the scale of the scale ring, thereby indicating the rotation angle of the third support rod 4.

[0074] like Figure 2 As shown, the angle disk 42 is provided with a first recording pointer 421 and a second recording pointer 422. The first recording pointer 421 and the second recording pointer 422 are fixed on the angle disk 42, and the first recording pointer 421 and the second recording pointer 422 respectively indicate the scale on the scale ring. The first recording pointer 421 indicates the direction of twelve o'clock, and the second recording pointer 422 indicates the direction between three o'clock and four o'clock, so as to record the angle between the rotating pointer 43 and the first recording pointer 421 or the second recording pointer 422.

[0075] Furthermore, the second support rod 3 is connected to the first support rod 2 via the second movable block 31. The second movable block 31 is connected to the first support rod 2 via the fourth locking mechanism 32. The fourth locking mechanism 32 includes: a first bevel gear 321 and a second bevel gear 322. The first bevel gear 321 is rotatably connected to the second movable block 31. The inner ring of the first bevel gear 321 is threadedly connected to the first support rod 2. The second bevel gear 322 is rotatably connected to the second movable block 31 via the second rotating rod 323. The second bevel gear 322 meshes with the first bevel gear 321.

[0076] In the embodiments of this application, the second movable block 31 is connected to the first support rod 2 through the fourth locking mechanism 32. By turning the second rotating rod 323 of the fourth locking mechanism 32, the vertical adjustment of the second support rod 3 and the synchronous locking can be realized. The adjustment method is simple and reliable.

[0077] like Figure 1 , Figure 5As shown, the second support rod 3 is fixedly connected to the second movable block 31. The second support rod 3 is connected to the first support rod 2 through the second movable block 31. The second movable block 31 is connected to the first support rod 2 through the fourth locking mechanism 32. The fourth locking mechanism 32 includes a first bevel gear 321 and a second bevel gear 322. The first bevel gear 321 is located inside the second movable block 31 and is rotatably connected to the second movable block 31 through a bearing 324. The inner ring of the first bevel gear 321 is threadedly connected to the first support rod 2. The second bevel gear 322 is rotatably connected to the second movable block 31 through a second rotating rod 323. The second bevel gear 322 is located inside the second movable block 31 and meshes with the first bevel gear 321. A portion of the second rotating rod 323 is located outside the second movable block 31. The second movable block 31 is connected to the first support rod 2 via a guide structure. Specifically, the second movable block 31 is provided with a third guide block, and the first support rod 2 is provided with a third guide groove. The third guide groove extends along the height direction of the first support rod 2, and at least part of the third guide block is inserted into the third guide groove to restrict the rotation of the second movable block 31 relative to the first support rod 2. Rotating the second rotating rod 323 can drive the second movable block 31 to move along the height direction of the first support rod 2.

[0078] like Figure 6 As shown, the angle between the measuring component and the second support rod 3 is 90°, that is, the displacement sensor 5 is in a vertical state. The rotation angle of the measuring component is adjusted according to the tilt angle of the seat cushion so that the displacement sensor 5 is perpendicular to the seat cushion, thereby measuring the rebound amount of the seat cushion.

[0079] like Figure 7 As shown, the angle between the measuring component and the second support rod 3 is an obtuse angle, that is, the displacement sensor 5 is in an inclined state. The rotation angle of the measuring component is adjusted according to the tilt angle of the seat back so that the displacement sensor 5 is perpendicular to the seat back, thereby measuring the rebound amount of the seat back.

[0080] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0081] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0082] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0083] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for measuring the resilience performance of seat foam, characterized in that, include: Base (1); A support assembly is connected to the base (1). The support assembly includes a first support rod (2), a second support rod (3), and a third support rod (4). The first support rod (2) extends vertically, and the second support rod (3) and the third support rod (4) extend horizontally. The second support rod (3) is movably arranged along the height direction of the first support rod (2). The third support rod (4) is arranged at a first angle to the second support rod (3). The third support rod (4) is movably arranged along the length direction of the second support rod (3). A measuring component is connected to the third support rod (4). The measuring component includes a plurality of displacement sensors (5), which are rotatably arranged about the axis of the third support rod (4).

2. The seat foam resilience measuring device according to claim 1, characterized in that, The third support rod (4) is rotatably disposed relative to the second support rod (3), and the rotation axis of the third support rod (4) is collinear with the axis of the third support rod (4). The measuring assembly further includes: A support frame (6) is connected to the third support rod (4), and a plurality of displacement sensors (5) are connected to the support frame (6). The positions of the plurality of displacement sensors (5) relative to the support frame (6) are adjustable.

3. The seat foam resilience measuring device according to claim 2, characterized in that, The support frame (6) includes: A connecting rod (61) is connected to the third support rod (4), and the connecting rod (61) and the third support rod (4) are arranged at a second included angle; The telescopic assembly includes a first telescopic rod (62), which includes a first fixed section (621) and a first movable section (622). The first fixed section (621) is connected to the connecting rod (61), and the first movable section (622) is movably arranged along the length direction of the first fixed section (621). The displacement sensor (5) is connected to the first movable section (622).

4. The seat foam resilience measuring device according to claim 3, characterized in that, The first movable segment (622) comprises two parts: one first movable segment (622) is connected to the first end of the first fixed segment (621), and the other first movable segment (622) is connected to the second end of the first fixed segment (621). The telescopic assembly further includes: The second telescopic rod (63) includes a second fixed section (631) and a second movable section (632). The second fixed section (631) is connected to one of the two first movable sections (622). The second fixed section (631) and the first movable section (622) are arranged at a third angle. The second movable section (632) is movably arranged along the length direction of the second fixed section (631). Part of the displacement sensor (5) is connected to the first movable section (622) through the second movable section (632). The third telescopic rod (64) includes a third fixed section (641) and a third movable section (642). The third fixed section (641) is connected to the other of the two first movable sections (622). The third fixed section (641) and the first movable section (622) are arranged at a fourth angle. The third movable section (642) is movably arranged along the length direction of the third fixed section (641). Part of the displacement sensor (5) is connected to the first movable section (622) through the third movable section (642).

5. The seat foam resilience measuring device according to claim 4, characterized in that, Some of the displacement sensors (5) are movably disposed relative to the second movable segment (632) in a first direction, which is perpendicular to the length direction of the second movable segment (632); and / or, some of the displacement sensors (5) are movably disposed relative to the third movable segment (642) in a second direction, which is perpendicular to the length direction of the third movable segment (642).

6. The seat foam resilience measuring device according to claim 4, characterized in that, The two first movable sections (622) of the first telescopic rod (62) are connected by a first locking mechanism (7), which includes: The first locking wheel (71) is provided with a first rotating rod (72). The first locking wheel (71) is rotatably connected to the first fixed section (621) through the first rotating rod (72). The first locking wheel (71) is located inside the first fixed section (621). The first meshing tooth (73) is connected to one of the two first movable sections (622) and meshes with the first locking wheel (71); The second meshing tooth (74) is connected to the other of the two first moving sections (622), the second meshing tooth (74) meshes with the first locking wheel (71), and the second meshing tooth (74) is arranged opposite to the first meshing tooth (73) along the radial direction of the first locking wheel (71).

7. The seat foam resilience measuring device according to any one of claims 1-6, characterized in that, The third support rod (4) is connected to the second support rod (3) via a first movable block (41). The first movable block (41) is connected to the second support rod (3) via a second locking mechanism (411). The second locking mechanism (411) has a first unlocking position that allows the first movable block (41) to move along the length direction of the second support rod (3). The third support rod (4) is connected to the first movable block (41) via a third locking mechanism (412). The third locking mechanism (412) has a second unlocking position that allows the third support rod (4) to rotate relative to the first movable block (41).

8. The seat foam resilience measuring device according to claim 7, characterized in that, The first movable block (41) is provided with an angle disk (42), and part of the third support rod (4) passes through the center of the angle disk (42). The end of the third support rod (4) away from the first movable block (41) is provided with a rotating pointer (43), and the end of the rotating pointer (43) extends to the scale ring on the angle disk (42).

9. The seat foam resilience measuring device according to claim 7, characterized in that, The second locking mechanism (411) and / or the third locking mechanism (412) are fastening screws, which are threadedly connected to the first movable block (41).

10. The seat foam resilience measuring device according to any one of claims 1-6, characterized in that, The second support rod (3) is connected to the first support rod (2) via a second movable block (31), and the second movable block (31) is connected to the first support rod (2) via a fourth locking mechanism (32), the fourth locking mechanism (32) comprising: The first bevel gear (321) is rotatably connected to the second movable block (31), and the inner ring of the first bevel gear (321) is threadedly connected to the first support rod (2). The second bevel gear (322) is rotatably connected to the second movable block (31) via the second rotating rod (323), and the second bevel gear (322) meshes with the first bevel gear (321).

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