Rotation point conversion mechanism and automobile large-angle seat H point measuring device

Abstract

The invention discloses a rotation point conversion mechanism and an automobile large-angle seat H point measuring device. Wherein the rotation point conversion mechanism comprises a fixed bracket, a first H-point rotating shaft and a second H-point rotating shaft which are arranged on a hip back plate; a first arc-shaped hole and a second arc-shaped hole are formed in the left side and the right side of the fixing support respectively, the first arc-shaped hole extends from the left lower portion to the right upper portion, and the second arc-shaped hole extends from the upper portion to the lower portion. The first H-point rotating shaft and the second H-point rotating shaft are mounted at the lower end of the connecting rod structure; the connecting rod mechanism is connected with the waist back plate, the hip back plate and the pelvis back plate; a first H-point rotating shaft and a second H-point rotating shaft which penetrate through the first arc-shaped hole are arranged on the left side and the right side of the lower end of the connecting rod mechanism respectively; according to the invention, the bottleneck that the existing two-generation HPM device can only cover a measurement angle of about 26 degrees is solved, the H-point measurement of a large-angle (such as 90 degrees shown in a document) seat backrest is supported, and the application scene of the device is greatly expanded.

Description

Technical Field

[0001] This application relates to the field of automotive seat testing technology, specifically to a rotary point conversion mechanism and an H-point measuring device for automotive large-angle seats, which can be applied to both new energy vehicles and fuel vehicles. Background Technology

[0002] In the field of automotive seat design and ergonomic optimization, accurate measurement of the H-point (the imaginary point where the seat contacts the human body after the driver or passenger sits down, usually corresponding to the center of the hip joint) is crucial. It directly determines the driver's field of vision, riding comfort, ease of operation, and driving safety, and is a core element in ensuring that the seat meets ergonomic requirements and guarantees driving safety and experience.

[0003] Currently, the internationally accepted H-point measurement equipment consists of first-generation and second-generation HPM devices, both used to measure the H-point position of a seat. However, these two generations of HPM devices have significant technical limitations, making them difficult to meet practical application requirements: the measurable backrest angle is limited, with a measurement range of only about 26 degrees; and when the backrest is opened at a large angle, a discontinuity occurs between the backrest and the buttocks, such as... Figure 17 , Figure 18 As shown, this affects the accuracy of the measurement data, further limiting its application in measuring the H-point of seats with large angle adjustments. Summary of the Invention

[0004] In view of the technical problems mentioned in the background art above, the purpose of this invention is to provide a rotary point conversion mechanism and an H-point measuring device for automobile large-angle seats.

[0005] To achieve the objectives of this invention, the technical solution provided by this invention is as follows:

[0006] First aspect

[0007] This invention provides a rotation point conversion mechanism, including a fixed bracket mounted on the buttock back plate and a first H-point rotating shaft and a second H-point rotating shaft;

[0008] The fixed bracket is provided with a first arc-shaped hole and a second arc-shaped hole on its left and right sides, respectively. The first arc-shaped hole extends from the lower left to the upper right, and the second arc-shaped hole extends from the top to the bottom.

[0009] The first H-point pivot and the second H-point pivot are installed at the lower end of the linkage structure, and the linkage mechanism is connected to the lumbar back plate, the hip back plate, and the pelvic back plate.

[0010] The lower end of the linkage mechanism is provided with a first H-point rotating shaft and a second H-point rotating shaft passing through the first arc-shaped hole on the left and right sides respectively.

[0011] When the measuring device back is in the 0° position, the first H-point pivot is located at the lower end of the first arc-shaped hole and the second H-point pivot is located at the upper end of the second arc-shaped hole.

[0012] As the measuring device backrest changes from the 0° position to the 26° position, the position of the first H-point rotating shaft in the first arc-shaped hole remains unchanged, while the second H-point rotating shaft moves from the upper end of the second arc-shaped hole to the lower end of the second arc-shaped hole.

[0013] As the measuring device backrest changes from the 0° position to the 26° position, the position of the second H-point rotating shaft in the second arc-shaped hole remains unchanged, while the first H-point rotating shaft moves from the lower end of the first arc-shaped hole to the upper end of the first arc-shaped hole.

[0014] Second aspect

[0015] This invention provides a device for measuring the H-point of a car seat with a large angle, including the aforementioned rotation point conversion mechanism.

[0016] Furthermore, it includes a backrest assembly, a hip assembly, and a leg assembly connected in sequence.

[0017] Furthermore, the backrest assembly includes a lumbar backrest, a hip backrest, and a pelvic backrest, and the hip assembly includes a hip backrest.

[0018] Furthermore, the linkage mechanism includes an intermediate connecting bracket, a main shaft movable bracket, a main shaft movable bracket, a lower connecting bracket, and a main shaft; the first H-point rotating shaft passes through the lower end of the lower connecting bracket, the first through hole at the lower end of the main shaft movable bracket, and the first arc-shaped hole; the second H-point rotating shaft passes through the lower end of the lower connecting bracket, the second through hole at the lower end of the main shaft movable bracket, and the second arc-shaped hole; the upper end of the lower connecting bracket is connected to the intermediate connecting bracket, the intermediate connecting bracket is connected to the main shaft movable bracket, the main shaft movable bracket is connected to the main shaft, and the lower end of the main shaft is connected to the upper end of the main shaft movable bracket.

[0019] Furthermore, the main shaft movable bracket is connected to the chest back plate via the thoracic connecting bracket; the intermediate connecting bracket is connected to the lumbar back plate via the lumbar connecting bracket; the lower connecting bracket is connected to the pelvic back plate via the pelvic connecting bracket; and the hip back plate is connected to the leg assembly via the hip connecting bracket.

[0020] Furthermore, a lower fixing bracket is installed on the buttock back plate, and a buttock configuration block connecting shaft for installing the buttock counterweight is provided on the lower fixing bracket.

[0021] Furthermore, a main shaft connecting bracket is provided on the main shaft, and a first backrest counterweight connecting rod is provided on the main shaft connecting bracket. The first backrest counterweight connecting rod is used to install the backrest counterweight.

[0022] Furthermore, a second backrest counterweight connecting rod is provided on both sides of the intermediate connecting bracket, and the second backrest counterweight connecting rod is used to install the backrest counterweight.

[0023] Furthermore, the hip counterweight and the backrest counterweight are installed symmetrically.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] (1) It solves the bottleneck that the existing two generations of HPM devices can only cover a measurement angle of about 26°, supports H-point measurement of seat backs at large angles (such as 90° as shown in the document), greatly expands the applicable scenarios of the device, and meets the testing needs of large-angle adjustable seats.

[0026] (2) Through the coordinated movement of the first H-point pivot, the second H-point pivot and the corresponding arc hole, as well as the linkage design of the linkage mechanism and each back plate, the problem of the gap between the backrest and the buttocks when the backrest is opened at a large angle is completely eliminated, ensuring the consistency of the device with the simulated human sitting posture during the measurement process.

[0027] (3) On the one hand, within the original 0°-26° measurement range, the motion state of the device is consistent with that of the traditional HPM device, ensuring the compatibility and continuity of historical measurement data; on the other hand, the seamless design in large-angle scenarios avoids measurement deviations caused by the fitting gap, improving the accuracy and reliability of H-point measurement in the full angle range.

[0028] (4) By using symmetrically installed buttock counterweights, backrest counterweights, and linkage mechanisms to synchronously control the waist, buttocks, and pelvic backplate, the force state and posture changes of the human body after sitting down can be simulated more accurately, further ensuring the consistency between the H-point measurement results and the actual driving and riding scenarios.

[0029] (5) It innovatively integrates the backrest structure of the second-generation HPM device with the hip and leg structure of the first-generation HPM device, without the need to completely reconstruct the measurement equipment. It achieves functional upgrades on the basis of inheriting the existing technological advantages, reducing the cost of technology implementation and equipment iteration. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the measuring device provided in an embodiment of the present invention;

[0031] In the diagram, there is a backrest assembly 1, a hip assembly 2, and a leg assembly 3.

[0032] Figure 2 This is a partial structural schematic diagram of the measuring device provided in an embodiment of the present invention;

[0033] In the diagram, there are: backrest weight 4, chest back panel 5, lumbar back panel 6, hip back panel 7, pelvic back panel 8, and hip weight 9.

[0034] Figure 3 This is a schematic diagram of the structure of the hip connection bracket provided in an embodiment of the present invention;

[0035] In the image, the hip joint is connected to the support 10;

[0036] Figure 4 This is a first schematic diagram of the structure of the rotary point conversion mechanism provided in an embodiment of the present invention;

[0037] In the figure, the lower fixed bracket 11, the hip configuration block connecting shaft 12, the second H point rotating shaft 13, the fixed bracket 14, the first H point rotating shaft 15, the pelvic segment connecting bracket 16, the thoracic segment connecting bracket 22, the intermediate connecting bracket 17, the lower connecting bracket 20, the lumbar segment connecting bracket 21, the main shaft movable bracket 18, the main shaft upper connecting bracket 23, the main shaft rod 24, and the main shaft rod movable bracket 19 are shown.

[0038] Figure 5 This is a second schematic diagram of the structure of the rotary point conversion mechanism provided in an embodiment of the present invention;

[0039] Figure 6 A first schematic diagram of the structure of the movable support for the main shaft provided in an embodiment of the present invention;

[0040] In the diagram, the first through hole is 25, and the second through hole is 26;

[0041] Figure 7 This is a first schematic diagram of the structure of the fixed bracket provided in an embodiment of the present invention;

[0042] In the figure, the first arc-shaped hole is 27, and the second arc-shaped hole is 28;

[0043] Figure 8 This is a second schematic diagram of the structure of the movable support for the main shaft provided in an embodiment of the present invention;

[0044] Figure 9 This is a second schematic diagram of the structure of the fixed bracket provided in an embodiment of the present invention;

[0045] Figure 10 A schematic diagram of the state of the measuring device provided in the embodiment of the present invention when the back is in the 0° position;

[0046] Figure 11 A schematic diagram showing the positions of the first H-point pivot and the second H-point pivot when the backrest is in the 0° position, as provided in an embodiment of the present invention.

[0047] Figure 12 A schematic diagram showing the state of the measuring device provided in an embodiment of the present invention when the backrest is at a 26° position;

[0048] Figure 13 A schematic diagram showing the positions of the first H-point pivot and the second H-point pivot when the backrest is at a 26° position, as provided in an embodiment of the present invention.

[0049] Figure 14 A schematic diagram showing the state of the measuring device provided in an embodiment of the present invention when the backrest is in a 90° position;

[0050] Figure 15 This is a schematic diagram showing the positions of the first H-point pivot and the second H-point pivot when the backrest is at a 90° position, as provided in an embodiment of the present invention.

[0051] Figure 16 This is a schematic diagram of the lower connecting bracket provided in an embodiment of the present invention;

[0052] Figure 17 This is a schematic diagram illustrating the state where the backrest and buttocks of the first-generation HPM are positioned at a large angle after being provided in an embodiment of the present invention.

[0053] Figure 18 This is a schematic diagram showing the state where the backrest and buttocks are at different heights after the second-generation HPM is opened at a large angle, as provided in an embodiment of the present invention. Detailed Implementation

[0054] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0055] Example 1

[0056] like Figures 1-16 As shown, this application provides a rotary point conversion mechanism, including a fixed bracket 14 mounted on the buttock back plate 7 and a first H-point rotating shaft 15 and a second H-point rotating shaft 13;

[0057] The fixed bracket 14 is provided with a first arc-shaped hole 27 and a second arc-shaped hole 28 on the left and right sides respectively. The first arc-shaped hole 27 extends from the lower left to the upper right, and the second arc-shaped hole 28 extends from the top to the bottom.

[0058] The first H-point pivot 15 and the second H-point pivot 13 are installed at the lower end of the linkage structure, and the linkage mechanism is connected to the lumbar back plate 6, the hip back plate 7, and the pelvic back plate 8.

[0059] The lower left and right sides of the linkage mechanism are respectively provided with a first H-point rotating shaft 15 and a second H-point rotating shaft 13 passing through the first arc-shaped hole 27;

[0060] When the measuring device back is in the 0° position, the first H-point rotating shaft 15 is located at the lower end of the first arc-shaped hole 27 and the second H-point rotating shaft 13 is located at the upper end of the second arc-shaped hole 28.

[0061] As the measuring device backrest changes from the 0° position to the 26° position, the position of the first H-point rotating shaft 15 in the first arc-shaped hole 27 remains unchanged, while the second H-point rotating shaft 13 moves from the upper end of the second arc-shaped hole 28 to the lower end of the second arc-shaped hole 28.

[0062] As the measuring device backrest changes from the 0° position to the 26° position, the position of the second H-point rotating shaft 13 in the second arc-shaped hole 28 remains unchanged, while the first H-point rotating shaft 15 moves from the lower end of the first arc-shaped hole 27 to the upper end of the first arc-shaped hole 27.

[0063] It should be noted that the present invention combines the backrest of the second-generation HPM with the hip and leg area of ​​the first-generation HPM through a rotary point conversion mechanism, which can ensure that it is consistent with the original device within the original measurement angle, and can eliminate angle limitations and discontinuities for large-angle measurements.

[0064] Example 2

[0065] like Figures 1-16 As shown, this embodiment provides an H-point measuring device for a car seat with a large angle, including the aforementioned rotation point conversion mechanism. It also includes a backrest assembly 1, a hip assembly 2, and a leg assembly 3 connected in sequence.

[0066] The backrest assembly 1 includes a lumbar backrest 6, a hip backrest 7, and a pelvic backrest 8, and the hip assembly 2 includes the hip backrest 7.

[0067] The linkage mechanism includes an intermediate connecting bracket 17, a main shaft movable bracket 18, a main shaft movable bracket 19, a lower connecting bracket 20, and a main shaft 24; the first H-point rotating shaft 15 passes through the lower end of the lower connecting bracket 20, the lower end of the main shaft movable bracket 19, the first through hole 25, and the first arc-shaped hole 27; the second H-point rotating shaft 13 passes through the lower end of the lower connecting bracket 20, the lower end of the main shaft movable bracket 19, the second through hole 26, and the second arc-shaped hole 28; the upper end of the lower connecting bracket 20 is connected to the intermediate connecting bracket 17, the intermediate connecting bracket 17 is connected to the main shaft movable bracket 18, the main shaft movable bracket 18 is connected to the main shaft 24, and the lower end of the main shaft 24 is connected to the upper end of the main shaft movable bracket 19.

[0068] The main shaft movable support 18 is connected to the chest back plate 5 via the chest section connecting support 22; the middle connecting support 17 is connected to the waist back plate 6 via the waist section connecting support 21; the lower connecting support 20 is connected to the pelvic back plate 8 via the pelvic section connecting support 16; and the buttock back plate 7 is connected to the leg assembly 3 via the buttock connecting support 10.

[0069] A lower fixing bracket 11 is installed on the buttock back plate 7, and a buttock configuration block connecting shaft 12 for installing the buttock counterweight block 9 is provided on the lower fixing bracket 11.

[0070] The main shaft 24 is provided with a main shaft connecting bracket 23, and the main shaft connecting bracket 23 is provided with a first backrest counterweight connecting rod, which is used to install the backrest counterweight 4.

[0071] The intermediate connecting bracket 17 is provided with a second backrest counterweight connecting rod on both sides, and the second backrest counterweight connecting rod is used to install the backrest counterweight 4.

[0072] The hip counterweight 9 and the backrest counterweight 4 are symmetrically installed respectively.

[0073] It should be noted that the proposed solution is an improvement based on the existing technology. For the parts not described in detail, please refer to the existing technology for explanation.

[0074] Finally, it should be noted that the above embodiments are merely illustrative and explanatory of the present invention, and are not intended to limit the present invention to the scope of the described embodiments. Furthermore, those skilled in the art will understand that the present invention is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of the present invention, all of which fall within the scope of protection claimed by the present invention.

Claims

1. A point of rotation conversion mechanism characterized by, The fixed support (14) and the first H-point pivot (15) and the second H-point pivot (13) are installed on the hip back plate (7); The first arc-shaped hole (27) extends from the lower left to the upper right, and the second arc-shaped hole (28) extends from the upper to the lower. The first H-point pivot (15) and the second H-point pivot (13) are installed at the lower end of the connecting rod mechanism, which is connected with the waist back plate (6), the hip back plate (7), and the pelvic back plate (8). The first H-point pivot (15) and the second H-point pivot (13) are arranged on the left and right sides of the lower end of the connecting rod mechanism and pass through the first arc-shaped hole (27). When the backrest of the measuring device is at the 0° position, the first H-point pivot (15) is located at the lower end of the first arc-shaped hole (27), and the second H-point pivot (13) is located at the upper end of the second arc-shaped hole (28). When the backrest of the measuring device is changed from the 0° position to the 26° position, the first H-point pivot (15) remains unchanged in the first arc-shaped hole (27), and the second H-point pivot (13) moves from the upper end of the second arc-shaped hole (28) to the lower end of the second arc-shaped hole (28). When the backrest of the measuring device is changed from the 0° position to the 26° position, the first H-point pivot (15) remains unchanged in the first arc-shaped hole (27), and the second H-point pivot (13) moves from the upper end of the second arc-shaped hole (28) to the lower end of the second arc-shaped hole (28).

2. A device for measuring the H-point of a large angle seat of a vehicle, characterized in that The swivel point conversion mechanism according to claim 1.

3. The automotive large angle seat H-point measuring device according to claim 2, characterized by The backrest assembly (1), the hip assembly (2), and the leg assembly (3) are sequentially connected.

4. The automotive large angle seat H-point measuring device according to claim 3, characterized by The backrest assembly (1) includes a waist back plate (6), a hip back plate (7), and a pelvic back plate (8), and the hip assembly (2) includes the hip back plate (7).

5. The automotive high angle seat H-point measurement device of claim 4, wherein The connecting rod mechanism includes an intermediate connecting support (17), a main shaft movable support (18), a main shaft rod movable support (19), a lower connecting support (20), and a main shaft rod (24). The first H-point pivot (15) passes through the lower end of the lower connecting support (20), the first through hole (25) at the lower end of the main shaft rod movable support (19), and the first arc-shaped hole (27). The second H-point pivot (13) passes through the lower end of the lower connecting support (20), the second through hole (26) at the lower end of the main shaft rod movable support (19), and the second arc-shaped hole (28). The upper end of the lower connecting support (20) is connected with the intermediate connecting support (17), the intermediate connecting support (17) is connected with the main shaft movable support (18), the main shaft movable support (18) is connected with the main shaft rod (24), and the lower end of the main shaft rod (24) is connected with the upper end of the main shaft rod movable support (19).

6. The automotive high angle seat H-point measurement device of claim 5, wherein The main shaft movable support (18) is connected with the chest back plate (5) through the chest connecting support (22); the middle connecting support (17) is connected with the waist back plate (6) through the waist connecting support (21); the lower connecting support (20) is connected with the pelvic back plate (8) through the pelvic connecting support (16); the hip back plate (7) is connected with the leg assembly (3) through the hip connecting support (10).

7. The automotive high angle seat H-point measurement device of claim 6, wherein A lower fixing support (11) is installed on the hip back plate (7), and a hip weight block connecting shaft (12) for installing a hip weight block (9) is arranged on the lower fixing support (11).

8. The automotive large angle seat H-point measuring device according to claim 7, characterized by A main shaft upper connecting support (23) is arranged on the main shaft rod (24), and a first backrest weight block connecting rod for installing a backrest weight block (4) is arranged on the main shaft upper connecting support (23).

9. The automotive high angle seat H-point measurement device of claim 8, wherein, Second backrest weight block connecting rods for installing the backrest weight block (4) are arranged on both sides of the middle connecting support (17).

10. The automotive high angle seat H-point measurement device of claim 9, wherein, The hip weight block (9) and the backrest weight block (4) are symmetrically installed, respectively.

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