Automobile large-angle seat H-point measuring device and assembling method thereof

Abstract

The invention discloses an automobile large-angle seat H-point measuring device and an assembling method thereof. The automobile large-angle seat H-point measuring device comprises a head assembly, a back type assembly, a hip type assembly and a leg assembly which are connected in sequence. The hip-shaped assembly comprises a hip-shaped bottom plate, a connecting notch is formed in the rear end of the hip-shaped bottom plate, an H-point supporting seat is installed on the inner side of the connecting notch, a connecting groove is formed in the middle of the upper end of the H-point supporting seat, and two H-point connecting rods arranged in a bilateral symmetry mode sequentially penetrate through the hip-shaped bottom plate on the corresponding side and the upper end of the H-point supporting seat respectively. The hip type assembly is optimally designed, and the connecting notch is formed in the right rear portion of the hip type bottom plate, so that the connected back type assembly can be opened at a large angle; by means of the scheme, the range of the measurement angle can be adjusted, and the maximum included angle between the trunk and the seat cushion can reach 160 degrees.

Description

Technical Field

[0001] The present application relates to the technical field of automotive seat testing, and particularly relates to a large-angle automotive seat H-point measurement device and an assembly method thereof. Background Art

[0002] A seat H-point measurement device (H-point Machine, abbreviated as HPM) is a device used to measure the position of the H-point of a seat. The H-point refers to the imaginary point where the seat contacts the human body when a driver or passenger is sitting on the seat, usually located at the center of the hip joint. The accurate measurement of the H-point is crucial for automotive seat design and ergonomic optimization. It directly affects the driver's field of vision, comfort, operation convenience, and safety. The core purpose of seat H-point measurement is to ensure that automotive seats meet ergonomic requirements, especially the relative position between the driver and the seat is crucial for safety, comfort, operation, and protection in accidents.

[0003] Existing HPMs include HPM-I and HPM-II. The original design intention of the HPM-I model was to solve the need for measuring the H-point position in seat design and provide a standardized and repeatable measurement tool. The dummy is usually static and cannot simulate dynamic or complex postures, only presenting a standard sitting posture for calibrating the H-point of the seat. The HPM-II was developed based on the HPM-I, with a more refined design and can be applied in a wider range of test and simulation scenarios. It is easy to install, has more flexible detachable parts, is convenient to carry, conforms more to the back shape of the human body, and can place the feet and seat cushion separately. It can be used to measure the H-point of the seat at other angles.

[0004] With the development of intelligent networking technology and the continuous progress of automotive seat design, more and more automotive manufacturers have begun to adopt large-angle seats with a larger adjustment range, which generally have a large-stroke adjustable backrest angle, seat cushion angle, and leg rest mechanism. However, with the increase in the adjustment range of the seat cushion and backrest angles, traditional HPM-I and HPM-II face some limitations when measuring the H-point and posture of the seat, and cannot meet the measurement requirements of large-angle seats. Summary of the Invention

[0005] In view of the technical problems pointed out in the above background art, the purpose of the present invention is to provide a large-angle automotive seat H-point measurement device and an assembly method thereof.

[0006] To achieve the purpose of the present invention, the technical solutions provided by the present invention are as follows: First Aspect The present invention provides a large-angle automotive seat H-point measurement device, including a head assembly, a backrest assembly, a hip assembly, and a leg assembly that are sequentially connected and arranged; The hip assembly includes a hip bottom plate, a connection notch is provided at the rear end of the hip bottom plate, an H-point support seat is installed inside the connection notch, a connection groove is provided in the middle of the upper end of the H-point support seat, and two symmetrically arranged H-point connecting rods respectively pass through the hip bottom plate on the corresponding side and the upper end of the H-point support seat in sequence; The back assembly includes a chest back plate and a waist back plate arranged at intervals up and down, a connecting rod structure is provided on the chest back plate and the waist back plate, and one end of the connecting rod structure passes through the connection notch and is hinged to the H-point connecting rod through a locking bushing.

[0007] In a second aspect The present invention provides an assembly method for an H-point measuring device of a large-angle vehicle seat, and the assembly method is used to assemble the H-point measuring device of the large-angle vehicle seat; the method includes the following steps: Step 1: Place the hip assembly on the seat so that the hip bottom plate of the hip assembly leans against the seat backrest, observe and adjust the hip assembly so that its center coincides with the center of the seat; Step 2: Before placing the back assembly, lock the back assembly in a forward-bent state, set the LSP scale of the back assembly at the 0 scale position, and lock it; Place the H-point hinge shaft at the bottom of the back assembly on the H-point support seat of the hip assembly, the upper part of the back assembly does not contact the seat backrest, and slide the locking bushing inward along the H-point connecting rod so that the H-point hinge shaft is hinged; Step 3: Install the head assembly according to the usage requirements; Step 4: Use the lateral level of the hip assembly to shake and adjust the H-point measuring device of the large-angle vehicle seat on the seat to make it laterally level and contact the seat backrest; Step 5: Load weights according to the principle of outward and upward from the H-point, specifically as follows: Step 5.1: Loosen the trunk hinge locking rod; Step 5.2: Add weights to the hip assembly, specifically as follows: Step 5.2.1: Before each round of weight loading, apply an external force to stamp the spring stamping mechanism twice, so that the hip assembly is in full and close contact with the seat during the loading process; Step 5.2.2: Place two hip weight blocks on the innermost sides of the two H-point connecting rods respectively, place two thigh weight blocks on the thigh weight block mounting seats, and check the level; Step 5.2.3: Repeat the above steps 5.2.1 - 5.2.2 until all hip weight blocks are loaded; Step 5.3: Add weights to the back assembly, specifically as follows: Step 5.3.1: Before each round of counterweight loading, apply an external force to punch twice at the LSP scale, so that the back mold assembly is in full and tight contact with the seat during the loading process; Place two upper counterweights on the lower counterweight hanger, one on each side of the center line of the back mold assembly and close to the center line; place two lower counterweights on the upper counterweight hanger, one on each side of the center line of the back mold assembly and close to the center line; check the level; Step 5.3.2: Repeat the above Step 5.3.1 until all upper and lower counterweights are loaded; Step 5.4: Lock the torso hinge locking rod; Step 6: Installation of the leg assembly.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: Optimize the design of the hip mold assembly, cut a connection notch directly behind the hip mold bottom plate, so that the connected back mold assembly can be opened at a large angle; Optimize the design of the back mold assembly, adopt a more refined multi-degree-of-freedom joint system, which can adjust the back within a larger angle range, enabling it to perfectly adapt to different backrest angles and maintain the correct posture of the torso in contact with the seat at the limit angle. In addition, adopting a two-section structure enables, without affecting the contact state between the dummy and the seat, to maximize the satisfaction of the contact between the dummy back mold and the seat backrest under large-angle working conditions, better reflecting the actual situation of a real person sitting on the seat, and further improving the practical application value of the measurement; In addition, the present application can be used to measure both sitting postures and large-angle postures; In addition, with the solution of the present application, the measurement angle range can be adjusted, and the maximum angle between the torso and the seat cushion can reach 160°. Brief Description of the Drawings

[0009] Figure 1 It is a schematic structural diagram of the measurement device provided by the embodiment of the present application; In the figure, head assembly 1, back mold assembly 2, hip mold assembly 3, leg assembly 4; Figure 2 It is a first schematic diagram of a partial structure of the measurement device provided by the embodiment of the present application; Figure 3 It is a second schematic diagram of a partial structure of the measurement device provided by the embodiment of the present application; Figure 4 It is a first schematic diagram of the structure of the back mold assembly provided by the embodiment of the present application; In the figure, upper counterweight 21, lower counterweight 22; Figure 5 It is a second schematic diagram of the structure of the back mold assembly provided by the embodiment of the present application; In the figure, there are neck shaft 23, chest backplate 24, upper counterweight hanger 25, lower counterweight hanger 26, waist backplate 27, H-point hinge shaft 28, torso angle measuring platform 29, LSP scale 30; chest connecting rod 31, torso hinge locking rod 32, waist connecting rod 33, hip connecting rod 34, torso rod 35; Figure 6 It is the third schematic diagram of the structure of the back type assembly provided by the embodiment of the present application; Figure 7 It is the first schematic diagram of the structure of the connecting rod structure provided by the embodiment of the present application In the figure, there are torso rod connector 36, inner connecting rod 37; Figure 8 It is the second schematic diagram of the structure of the connecting rod structure provided by the embodiment of the present application; Figure 9 It is the first schematic diagram of the structure of the hip type assembly provided by the embodiment of the present application; In the figure, there are hip bottom plate 61, locking bushing 62, hip counterweight 63, H-point connecting rod 64, lateral level 65, spring stamping mechanism 66, thigh counterweight mounting seat 67, seat cushion angle measuring platform 68; Figure 10 It is the second schematic diagram of the structure of the hip type assembly provided by the embodiment of the present application; In the figure, there is H-point support seat 69; Figure 11 It is the schematic diagram of the structure of the foot assembly provided by the embodiment of the present application; In the figure, there are graduated sliding rod 41, dial 42, graduated cross bar 43, leg component 44, foot component 45; Figure 12 It is the schematic diagram of the structure of the seat headrest measuring device provided by the embodiment of the present application; In the figure, there are headrest measuring platform 51, connecting rod 52, slider 53, headrest connector 54, headrest measuring rod 55; Figure 13 It is the schematic diagram of the structure of the upper counterweight provided by the embodiment of the present application; Figure 14 It is the schematic diagram of the structure of the lower counterweight provided by the embodiment of the present application; Figure 15 It is the schematic diagram of the structure of the hip counterweight provided by the embodiment of the present application; Figure 16 It is the schematic diagram of the structure of the thigh counterweight provided by the embodiment of the present application. Detailed implementation manners

[0010] Combined with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0011] It should be noted that the large-angle seat H-point measuring device for automobiles provided in this application can simulate the transition of the human body from the standard sitting posture to the large-angle sitting posture, especially the comfortable lying posture, and accurately measure the H-point coordinates and posture angles in different sitting postures.

[0012] As Figures 1-16 shown, a large-angle seat H-point measuring device for automobiles provided in this embodiment includes a head assembly 1, a back assembly 2, a hip assembly 3, and a leg assembly 4 that are sequentially connected and arranged. The hip assembly 3 includes a hip base plate 61. A connection notch is provided at the rear end of the hip base plate 61. An H-point support seat 69 is installed inside the connection notch. A connection groove is provided in the middle of the upper end of the H-point support seat 69. Two symmetrically arranged H-point connecting rods 64 sequentially pass through the hip base plate 61 and the upper end of the H-point support seat 69 on the corresponding side. The back assembly 2 includes a chest back plate 24 and a waist back plate 27 that are arranged at intervals up and down. A connecting rod structure is provided on the chest back plate 24 and the waist back plate 27. One end of the connecting rod structure passes through the connection notch and is hinged to the H-point connecting rod 64 through a locking bushing 62.

[0013] Preferably, the following structural design is also carried out for the hip assembly: Removable hip counterweights 63 are symmetrically arranged on the two H-point connecting rods 64. A thigh counterweight is installed on each side of the lower part of the hip base plate 61 through a thigh counterweight mounting seat 67. A lateral level 65 and a seat angle measuring table 68 are sequentially arranged at the middle position of the hip base plate 61 corresponding to the connection notch. A spring pressing mechanism 66 is provided on the seat angle measuring table 68. The hip assembly 3 is connected to the leg assembly 4 through the seat angle measuring table 68.

[0014] Preferably, this embodiment provides the following innovative structure; the connecting rod structure includes a chest connecting rod 31 fixedly installed on the chest back plate 24 and a waist connecting rod 33 fixedly installed on the waist back plate 27. The upper end of the waist connecting rod 33 is hinged to the chest connecting rod 31, and the lower end is hinged to the hip connecting rod 34. One end of the hip connecting rod 34 is hinged to one end of a trunk angle measuring table 29 for measuring the trunk angle through an H-point hinge shaft 28. The other end of the trunk angle measuring table 29 is connected to a trunk rod 35. A sliding block is slidably connected to the trunk rod 35. One end of the chest connecting rod 31 is hinged to the sliding block; the hip connecting rod 34 is also hinged to one end of an inner connecting rod 37, and the other end of the inner connecting rod 37 is hinged to the chest connecting rod 31; the waist connecting rod 33 is provided with an LSP scale 30, and the trunk angle measuring table 29 is provided with a longitudinal through hole, and the upper end of the LSP scale 30 passes through the through hole.

[0015] Wherein, a trunk hinge locking rod 32 for locking the sliding block to the trunk rod 35 is provided on the sliding block. The trunk hinge locking rod 32 is provided with threads, passes through the sliding block and is threadedly connected to the sliding block. When locking is required, rotate the trunk hinge locking rod 32 downward so that its end abuts against the trunk rod 35.

[0016] Wherein, upper counterweight suspension brackets 25 for installing upper counterweight blocks 21 are symmetrically arranged on both sides of the trunk rod 35, and lower counterweight suspension brackets 26 for installing lower counterweight blocks 22 are symmetrically arranged on both sides of the waist connecting rod 33. The material of the upper counterweight block 21 is iron, and the material of the lower counterweight block 22 is copper; the upper counterweight block 21 and the lower counterweight block 22 have the same mass.

[0017] It should be noted that this application optimizes the hip assembly on the basis of HPM-II, increases the fitting degree between the hip bottom plate 61 and the seat back, and at the same time optimizes the problem of interference between the HPM-I bottom plate and the back plate. In this embodiment, the top part of the hip assembly is cut to avoid interference between the hip assembly and the back assembly in the large-angle open state. In addition, a square connection notch is cut at the exact back of the hip assembly so that the connected back plate part can be opened at a large angle. The modified hip assembly structure conforms to the ergonomic principle, enabling it to maintain close contact with the seat at different angles, while keeping the angle and contact force between the dummy's hip and the seat natural, avoiding the generation of unreasonable assumed points or measurement errors. This design can not only ensure the accurate measurement of the H point, but also improve the overall comfort and ergonomic performance of the dummy.

[0018] In addition, by optimizing the design of the back assembly of HPM-II and adopting a more sophisticated multi-degree-of-freedom joint system, the back can be adjusted within a wider range of angles, allowing it to perfectly adapt to different backrest angles and maintain the correct posture of the torso in contact with the seat at extreme angles. When optimizing the design of the back assembly, in addition to meeting the angle adjustment function, the bottom section of the three-section back structure of HPM-II is removed, leaving only the upper two sections. This does not affect the contact state between the dummy and the seat, and can maximize the contact between the dummy's back and the seat back under large angle conditions. Better reflects the actual situation of a real person sitting on the seat, further improving the practical application value of the measurement.

[0019] In order to ensure the stability of the angle adjustment of the back assembly, especially to avoid excessive torque or swing at extreme angles, and to avoid interference between the counterweight and the buttocks, it is crucial to design a reasonable counterweight shape, quantity and reasonable layout. The optimized counterweight should be based on the adjustment range and mechanical requirements of the back design, and ensure that the overall mass of the back assembly is consistent with HPM-I. It is necessary to ensure that the back can remain stable and balanced during the entire process of large-angle adjustment, and there will be no interference from any structural parts. Therefore, in this embodiment, a similar upper and lower two-row counterweight layout scheme is adopted. Based on the premise of eliminating component interference, the first row of counterweights on the top is made of iron material, and the second row of counterweights on the bottom is made of copper material (copper replaces iron, and the size of the counterweight becomes smaller under the premise of unchanged quality, which can avoid interference between the counterweight under the back and the buttocks).

[0020] It should be noted that the LSP scale is used to determine the position of the seat lumbar support system (usually the support structure or adjustment device inside the seat back) and to measure the position data of the lumbar support relative to the seat reference point (such as point H or point R), including height, fore-and-aft position and inclination.

[0021] It should be noted that the lower counterweight block and the upper counterweight block are of equal quality and have relatively small dimensions, which effectively avoids interference between the waist counterweight block and the base plate during large-angle adjustment.

[0022] Preferably, the present application provides two structures of the head assembly. The first is the headroom measurement HRMD, and the torso rod 35 of the back assembly 2 is connected to the headroom measurement HRMD through the neck shaft 23. The second is the seat headrest measurement device, which includes a headrest measurement platform 51, a connecting rod 52, a slider 53, a headrest connecting piece 54, and a headrest measurement rod 55. Scale lines are provided on the headrest measurement rod 55. The slider 53 is slidably connected to the headrest measurement rod 55. A connecting rod 52 parallel to the headrest measurement rod 55 is provided on the slider 53. The upper end of the connecting rod 52 is provided with a headrest measurement platform 51. The headrest measurement rod 55 is connected to the torso rod connecting piece 36 on the torso rod 35 of the back assembly 2 through the headrest connecting piece 54. When installing the second type, it is necessary to disassemble the first type and the neck shaft 5.

[0023] It should be noted that through the headroom measurement HRMD and the seat headrest measurement device, the interaction relationship between the headroom and the seat headrest can be accurately measured, the support effect of different seat designs on the human head can be quantified, and the accuracy of comfort evaluation can be improved.

[0024] Preferably, in this embodiment, the following structure is provided: the leg assembly 4 includes a graduated sliding rod 41, a dial 42, a graduated cross bar 43, a leg part 44, and a foot part 45; one end of the graduated sliding rod 41 is inserted into the seat cushion angle measurement table 68 and the inserted length is adjustable, and the other end is fixedly connected to the middle part of the graduated cross bar 43. The two ends of the graduated cross bar 43 are of a symmetrical structure, and are respectively connected with a dial 42 and a leg part 44 in sequence. The lower end of each leg part 44 is inserted into a foot part 45 and the inserted length is adjustable.

[0025] In addition, the present application also provides an assembly method for an automotive large-angle seat H-point measurement device, and the assembly method can be used to assemble the above-mentioned automotive large-angle seat H-point measurement device; It includes the following steps: Step 1: Place the buttocks assembly 3 on the seat so that the buttocks bottom plate 31 of the buttocks assembly 3 leans against the seat backrest, observe and adjust the buttocks assembly 3 to make its center coincide with the center of the seat; Step 2: Before placing the back assembly 2, the back assembly 2 is locked in a forward-bent state, the LSP scale 30 of the back assembly 2 is set at the 0 scale position, and locked; Place the H-point hinge shaft 28 at the bottom of the back assembly 2 on the H-point support seat 69 of the buttocks assembly 3. The upper part of the back assembly 2 does not touch the seat backrest. Slide the locking bushing 62 inward along the H-point connecting rod 64 to make the H-point hinge shaft 28 be hingedly connected; Step 3: Install the head assembly 1 according to the usage requirements; if it is necessary to measure the head space or the seat headrest, install the HRMD or the seat headrest measuring device accordingly.

[0026] Step 4: Use the lateral level 65 of the buttock assembly 3 to shake and adjust the large-angle vehicle seat H-point measuring device on the seat to make it laterally level and contact with the seat backrest. Step 5: Load the counterweights according to the principle of outward and upward from the H-point, specifically as follows: Step 5.1: Loosen the torso articulation locking lever 32. Step 5.2: Add counterweights to the buttock assembly 3, specifically as follows: Step 5.2.1: Apply an external force to punch the spring stamping mechanism 66 twice before each round of counterweight loading, so that the buttock assembly 3 is in full and close contact with the seat during the loading process. Step 5.2.2: Place two buttock counterweight blocks 63 at the innermost sides of the two H-point linkages 64 respectively, place two thigh counterweight blocks on the thigh counterweight block mounting seat 67, and check the levelness. Step 5.2.3: Repeat the above steps 5.2.1 - 5.2.2 until all the buttock counterweight blocks 63 are loaded. Step 5.3: Add counterweights to the back assembly 2, specifically as follows: Step 5.3.1: Apply an external force to punch the LSP scale 30 twice before each round of counterweight loading, so that the back assembly 2 is in full and close contact with the seat during the loading process. Place two upper counterweight blocks 21 on the lower counterweight block suspension bracket 26, one on each side of the center line of the back assembly 2 and close to the center line; place two lower counterweight blocks 22 on the upper counterweight block suspension bracket 25, one on each side of the center line of the back assembly 2 and close to the center line; check the levelness. Step 5.3.2: Repeat the above steps 5.3.1 until all the upper counterweight blocks 21 and lower counterweight blocks 22 are loaded. Step 5.4: Lock the torso articulation locking lever 32. Step 6: Install the leg assembly 4.

[0027] Finally, it should be noted that the above embodiments are only used for exemplifying and explaining the present invention, and are not intended to limit the present invention to the scope of the described embodiments. In addition, those skilled in the art can understand that the present invention is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope claimed by the present invention.

Claims

1. An automotive large-angle seat H-point measuring device, characterized in that, It includes a head assembly (1), a back assembly (2), a hip assembly (3), and a leg assembly (4) connected in sequence. The hip assembly (3) includes a hip bottom plate (61). A connection notch is provided at the rear end of the hip bottom plate (61). An H-point support seat (69) is installed inside the connection notch. A connection groove is provided in the middle of the upper end of the H-point support seat (69). Two symmetrically arranged H-point connecting rods (64) pass through the hip bottom plate (61) and the upper end of the H-point support seat (69) on the corresponding side in sequence. The back assembly (2) includes a chest back plate (24) and a waist back plate (27) arranged at intervals up and down. A connecting rod structure is provided on the chest back plate (24) and the waist back plate (27). One end of the connecting rod structure passes through the connection notch and is hinged to the H-point connecting rod (64) through a locking bushing (62).

2. The H-point measuring device for a large-angle vehicle seat according to claim 1, characterized in that Detachable hip counterweights (63) are symmetrically arranged on the two H-point connecting rods (64). A thigh counterweight is installed on each side of the lower part of the hip bottom plate (61) through a thigh counterweight mounting seat (67). A lateral level (65) and a seat angle measuring table (68) are sequentially arranged at the middle part of the hip bottom plate (61) corresponding to the connection notch. A spring pressing mechanism (66) is provided on the seat angle measuring table (68). The hip assembly (3) is connected to the leg assembly (4) through the seat angle measuring table (68).

3. The large-angle vehicle seat H-point measuring device according to claim 2, characterized in that The connecting rod structure includes a chest connecting rod (31) fixedly installed on the chest back plate (24) and a waist connecting rod (33) fixedly installed on the waist back plate (27). The upper end of the waist connecting rod (33) is hinged to the chest connecting rod (31), and the lower end is hinged to a hip connecting rod (34). One end of the hip connecting rod (34) is hinged to a trunk angle measuring table (29) for measuring the trunk angle through an H-point hinge shaft (28). The other end of the trunk angle measuring table (29) is connected to a trunk rod (35). A sliding block is slidably connected to the trunk rod (35). One end of the chest connecting rod (31) is hinged to the sliding block. The hip connecting rod (34) is also hinged to one end of an inner connecting rod (37). The other end of the inner connecting rod (37) is hinged to the chest connecting rod (31). An LSP scale (30) is provided on the waist connecting rod (33). A longitudinal through hole is provided on the trunk angle measuring table (29). The upper end of the LSP scale (30) passes through the through hole.

4. The large-angle seat H-point measuring device for an automobile according to claim 3, wherein A trunk hinge locking rod (32) for locking the sliding block to the trunk rod (35) is provided on the sliding block.

5. The vehicle large-angle seat H-point measuring device according to claim 4, characterized in that, On the trunk rod (35), there are upper counterweight suspension brackets (25) symmetrically arranged on both sides for installing the upper counterweight (21). On the waist connecting rod (33), there are lower counterweight suspension brackets (26) symmetrically arranged on both sides for installing the lower counterweight (22). The material of the upper counterweight (21) is iron, and the material of the lower counterweight (22) is copper. The upper counterweight (21) and the lower counterweight (22) have the same mass.

6. The large-angle seat H-point measuring device for an automobile according to claim 5, characterized in that, The head assembly (1) is a head space measurement HRMD, and the trunk rod (35) is connected to the head space measurement HRMD through the neck shaft (23).

7. The large-angle seat H-point measuring device for an automobile according to claim 5, characterized in that The head assembly (1) is a seat headrest measurement device. The seat headrest measurement device includes a headrest measurement platform (51), a connecting rod (52), a slider (53), a headrest connecting piece (54), and a headrest measurement rod (55). Scale lines are provided on the headrest measurement rod (55). The slider (53) is slidably connected to the headrest measurement rod (55). A connecting rod (52) parallel to the headrest measurement rod (55) is provided on the slider (53). The upper end of the connecting rod (52) is provided with a headrest measurement platform (51). The headrest measurement rod (55) is connected to the trunk rod connecting piece (36) on the trunk rod (35) through the headrest connecting piece (54).

8. An H-point measuring device for a large-angle vehicle seat according to claim 6 or 7, characterized in that, The leg assembly (4) includes a graduated sliding rod (41), a dial (42), a graduated cross bar (43), a leg component (44), and a foot component (45). One end of the graduated sliding rod (41) is inserted into the seat cushion angle measurement table (68) and the inserted length is adjustable. The other end is fixedly connected to the middle part of the graduated cross bar (43). The two ends of the graduated cross bar (43) are of a symmetrical structure, and are respectively connected with a dial (42) and a leg component (44) in sequence. The lower end of each leg component (44) is inserted into a foot component (45) and the inserted length is adjustable.

9. An assembly method for a vehicle large-angle seat H-point measuring device, characterized in that, The assembly method is used to assemble the large-angle seat H-point measurement device for an automobile as described in claim 8, and includes the following steps: Step 1: Place the buttocks-shaped assembly (3) on the seat, make the buttocks-shaped bottom plate (31) of the buttocks-shaped assembly (3) lean against the seat backrest, observe and adjust the buttocks-shaped assembly (3) to make its center coincide with the center of the seat. Step 2: Before placing the backrest-shaped assembly (2), lock the backrest-shaped assembly (2) in a state of bending forward, set the LSP scale (30) of the backrest-shaped assembly (2) at the 0 scale position, and lock it. Place the H-point hinge shaft (28) at the bottom of the backrest-shaped assembly (2) on the H-point support seat (69) of the buttocks-shaped assembly (3). The upper part of the backrest-shaped assembly (2) does not touch the seat backrest. Slide the locking bushing (62) inward along the H-point connecting rod (64) to make the H-point hinge shaft (28) be hingedly connected. Step 3: Install the head assembly (1) according to the usage requirements. Step 4: Use the lateral level (65) of the buttocks assembly (3) to jitter and adjust the large-angle seat H-point measuring device on the seat to make it laterally level and contact the seat backrest; Step 5: Load the counterweight according to the principle of outward and upward from the H-point, specifically as follows: Step 5.1: Loosen the torso hinge locking lever (32); Step 5.2: Add counterweight to the buttocks assembly (3), specifically as follows: Step 5.2.1: Apply an external force to punch the spring stamping mechanism (66) twice before each round of counterweight loading, so that the buttocks assembly (3) is in full and close contact with the seat during the loading process; Step 5.2.2: Place two buttock counterweight blocks (63) at the innermost sides of the two H-point linkages (64) respectively, place two thigh counterweight blocks on the thigh counterweight block mounting seat (67), and check the level; Step 5.2.3: Repeat the above steps 5.2.1 - 5.2.2 until all the buttock counterweight blocks (63) are loaded; Step 5.3: Add counterweight to the backrest assembly (2), specifically as follows: Step 5.3.1: Apply an external force to punch the LSP scale (30) twice before each round of counterweight loading, so that the backrest assembly (2) is in full and close contact with the seat during the loading process; Place two upper counterweight blocks (21) on the lower counterweight block suspension bracket (26), one on each side of the center line of the backrest assembly (2) and close to the center line; place two lower counterweight blocks (22) on the upper counterweight block suspension bracket (25), one on each side of the center line of the backrest assembly (2) and close to the center line; check the level; Step 5.3.2: Repeat the above steps 5.3.1 until all the upper counterweight blocks (21) and lower counterweight blocks (22) are loaded; Step 5.4: Lock the torso hinge locking lever (32); Step 6: Installation of the leg assembly (4).

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