Lightweight automobile rear-row seat framework positioning accurate size detection device

Abstract

The utility model relates to a light-weight automobile rear-row seat framework positioning accurate size detection device, which solves the problems that the existing light-weight seat framework is lack of an accurate positioning detection tool and the size accuracy of the seat framework is difficult to guarantee. Comprising a checking fixture carriage with a checking fixture bottom plate arranged at the top, and a framework A reference supporting block and a pressing block mounting column are arranged in the middle of the checking fixture bottom plate; the front side of the testing fixture bottom plate is provided with a middle headrest conduit detection mechanism, a side headrest conduit detection mechanism and a skeleton B reference positioning block. The rear side of the testing fixture bottom plate is provided with a framework middle fixed supporting leg clamping detection mechanism and a framework side supporting leg detection mechanism. The detection tool bottom plate is also provided with a skeleton central armrest installation hole coaxiality detection tool, a skeleton central armrest installation hole detection pin and a skeleton central armrest limiting rivet detection tool. The periphery of the detection tool bottom plate is provided with a skeleton backboard position degree detection plate. The positioning device is reasonable in design and compact in structure, the lightweight seat framework can be accurately positioned, and the size of a key position is detected by customizing a detection tool.

Description

Technical Field

[0001] This utility model belongs to the field of automotive seat frame size detection technology, specifically relating to a lightweight automotive rear seat frame positioning and accurate size detection device. Background Technology

[0002] As is well known, the application of lightweight seat frames can reduce the overall weight of a vehicle, significantly reducing energy consumption in both gasoline and new energy vehicles, making them more fuel-efficient. However, as car seat frames become increasingly lightweight, dimensional quality control becomes paramount. Only by ensuring that the actual dimensions of the manufactured lightweight seat frame match its design dimensions can the safety of the seat frame be guaranteed. Furthermore, as the carrier of all seat components, the dimensional quality of the seat frame not only affects the overall installation of the seat on the vehicle body but also the installation of components such as the headrest and center armrest, directly impacting the sensory comfort of passengers. Therefore, it is necessary to design a precise positioning fixture for lightweight seat frames to ensure their dimensional accuracy. Utility Model Content

[0003] This invention addresses the aforementioned problems by providing a lightweight automotive rear seat frame positioning precision dimension detection device. This device can accurately locate lightweight seat frames and can use customized inspection tools to detect the dimensions of key positions, enabling precise detection of the dimensions of mounting holes, headrest mounting guides, and center armrest mounting brackets in lightweight seat frames.

[0004] The technical solution adopted by this utility model is as follows: This lightweight automotive rear seat frame precise dimension detection device includes a fixture box, a fixture base plate on the top of the fixture box, and fixture wheels with brakes on the bottom of the fixture box. The device is characterized in that: a plurality of vertically arranged frame A reference support blocks are arranged in the middle of the fixture base plate; a frame A reference clamping block mounting post is arranged in the middle of the plurality of frame A reference support blocks; and the frame A reference clamping block is arranged in a frame A reference clamping block placement groove on the right side of the fixture base plate; a central headrest guide tube detection mechanism is arranged on the front side of the frame A reference support block; side headrest guide tube detection mechanisms are symmetrically arranged on the left and right sides of the central headrest guide tube detection mechanism; and the central headrest... The catheter inspection tool and the side headrest catheter inspection tool are arranged in the headrest catheter inspection tool placement slot on the left side of the inspection tool base plate, and the upper part of the side headrest catheter detection mechanism on both sides is provided with the skeleton B reference positioning block; the rear side of the skeleton A reference support block is provided with the skeleton middle fixed leg clamping detection mechanism, and the left and right sides of the skeleton middle fixed leg clamping detection mechanism are respectively provided with the skeleton side leg detection mechanism; between the skeleton middle fixed leg clamping detection mechanism and the skeleton A reference pressure block mounting column, the skeleton central armrest mounting hole coaxiality inspection tool, the skeleton central armrest mounting hole detection pin and the skeleton central armrest limiting rivet inspection tool are respectively provided; the periphery of the inspection tool base plate is provided with several sets of vertically arranged skeleton back plate position detection plates.

[0005] The frame A reference clamping block includes a clamping block body. Three sets of A reference clamping posts are arranged on the lower side of the clamping block body. A downwardly arranged clamping block mounting post connecting stud is located in the middle of the three sets of A reference clamping posts. The clamping block mounting post connecting stud is rotatably located in the middle of the lower side of the clamping block body. A connecting stud screwing head is provided at the end of the clamping block mounting post extending above the clamping block body. A clamping block handle for easy gripping is also provided on the upper side of the clamping block body. The three sets of A reference clamping posts on the lower side of the frame A reference clamping block clamping block are used to clamp the A reference in the middle of the rear seat frame to be tested. The connecting stud screwing head drives the clamping block mounting post connecting stud to rotate, thereby threading the clamping block mounting post connecting stud with the threaded hole at the upper end of the frame A reference clamping block mounting post. This restricts the movement of the rear seat frame to be tested in the Z direction, facilitating subsequent testing.

[0006] The central headrest guide tube detection mechanism includes a central headrest guide tube detection base connected to a base plate. The upper part of the central headrest guide tube detection base has two sets of parallel headrest guide tube insert holes. A central headrest guide tube positioning pin is provided on the upper side of each insert hole. The central headrest guide tubes are inserted into the insert holes of the central headrest guide tube detection mechanism, and the positioning pins are used to fix the position of the central headrest guide tubes, thereby enabling the detection of the central headrest guide tubes on the rear seat frame.

[0007] The side headrest guide tube detection mechanism includes a side headrest guide tube detection base connected to the base plate of the inspection tool. The upper part of the side headrest guide tube detection base is provided with two sets of parallel headrest guide tube inspection tool insertion holes. Side headrest guide tube inspection tool positioning pins are respectively provided on the sides of the insertion holes. A frame B reference positioning block is also provided on the top of the side headrest guide tube detection base. A B reference positioning groove is provided at the front end of the frame B reference positioning block, and a sliding block is provided above the B reference positioning groove. The side headrest guide tube inspection tools are inserted into the insertion holes of the side headrest guide tube detection mechanism, and the position of the side headrest guide tube inspection tools is fixed by the side headrest guide tube inspection tool positioning pins, thereby detecting the side headrest guide tubes on the rear seat frame to be inspected. The B reference of the rear seat frame to be inspected is positioned and fixed by the B reference positioning groove and the sliding block at the front end of the frame B reference positioning block at the top of the side headrest guide tube detection mechanism.

[0008] The frame's central fixed leg clamping detection mechanism includes two sets of vertically arranged central leg detection columns. The bottom of the central leg detection columns is connected to the gauge base plate. One set of central leg detection columns has a central leg positioning diamond pin on its inclined top, while the other set of central leg detection columns has a central leg contour detection elliptical pin on its inclined top. The upper part of each central leg detection column is rotatably equipped with a central leg clamping clamp. A central leg clamping pad is also provided on the inclined top of the central leg detection column at the part that contacts the central leg clamping clamp. The two central fixed legs of the rear seat frame to be tested are placed on the inclined tops of two sets of central fixed legs detection columns, and positioned by the central fixed legs positioning diamond pins set on the inclined tops of one set of central fixed legs detection columns. The two central fixed legs are clamped by central fixed legs clamping pliers. Then, the central fixed legs are tested by the central fixed legs conforming detection elliptical pins set on the inclined tops of the other set of central fixed legs detection columns.

[0009] The frame side support leg detection mechanism includes a side support leg detection column connected to the base plate of the inspection fixture. A detection swing arm hinge seat is provided on the upper part of the side support leg detection column. A side support leg detection swing arm is rotatably mounted on the detection swing arm hinge seat. One end of the side support leg detection swing arm is hinged to the detection swing arm hinge seat, and the other end of the side support leg detection swing arm is provided with a side support leg detection pin. In addition, a detection swing arm positioning pin is also provided on the detection swing arm hinge seat. A detection swing arm buffer pad is provided between the hinge end of the side support leg detection swing arm and the upper part of the side support leg detection column. After the rear seat frame to be inspected is positioned on the base plate of the inspection fixture, the side support leg inspection swing rods of the side support leg inspection mechanism on both sides of the frame are swung down to a horizontal position and the position of the side support leg inspection swing rods is fixed by the inspection swing rod positioning pins. Then, the side support legs on both sides of the rear seat frame to be inspected are inspected using the side support leg inspection pins set at the ends of the side support leg inspection swing rods.

[0010] The beneficial effects of this utility model are as follows: This utility model uses a fixture carriage with a fixture base plate on top, fixture wheels with brakes at the bottom of the fixture carriage, and several sets of frame A reference support blocks in the middle of the fixture base plate. A frame A reference clamping block mounting column and a frame A reference clamping block are located between the sets of frame A reference support blocks. A central headrest guide tube detection mechanism is located on the front side of the frame A reference support block, and side headrest guide tube detection mechanisms are symmetrically arranged on the left and right sides of the central headrest guide tube detection mechanism. A frame B reference positioning block is located on the upper part of each side headrest guide tube detection mechanism. A frame central fixed leg clamping detection mechanism is located on the rear side of the frame A reference support block. The frame is equipped with side support leg detection mechanisms on both the left and right sides. Between the frame's central fixed support leg clamping detection mechanism and the frame's A reference pressure block mounting column, there are also frame central armrest mounting hole coaxiality gauges, frame central armrest mounting hole detection pins, and frame central armrest limiting rivet gauges. The gauge base plate is surrounded by several sets of frame back plate position detection plates. Therefore, its design is reasonable and its structure is compact. It can accurately position the lightweight car rear seat frame. The dimensions of key positions can be detected by customized gauges, thereby achieving accurate detection of the position dimensions of the lightweight car rear seat frame mounting holes, headrest mounting guides, and central armrest mounting brackets, ensuring the safety of the car seat frame installed on the vehicle body. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 yes Figure 1 A-direction view.

[0013] Figure 3 yes Figure 1 A schematic diagram of a skeleton A reference clamping block.

[0014] Figure 4 yes Figure 1 A schematic diagram of a side headrest catheter detection mechanism.

[0015] Figure 5 yes Figure 1 A schematic diagram of a central headrest catheter detection mechanism.

[0016] Figure 6 yes Figure 2 A schematic diagram of a structure for a frame-fixed leg clamping and detection mechanism.

[0017] Figure 7 yes Figure 1 A schematic diagram of a detection mechanism for the side support legs of a skeleton.

[0018] Figure 8 This is a schematic diagram illustrating one usage state of the rear seat frame for positioning and detection according to this utility model.

[0019] Explanation of the numbers in the diagram: 1. Inspection box; 2. Inspection base plate; 3. Frame A reference support block; 4. Frame A reference clamping block mounting post; 5. Frame A reference clamping block; 6. Frame A reference clamping block placement slot; 7. Side headrest guide tube detection mechanism; 8. Frame B reference positioning block; 9. Headrest guide tube inspection tool insertion hole; 10. Side guide tube inspection tool positioning pin; 11. Side headrest guide tube inspection tool; 12. Central headrest guide tube inspection mechanism; 13. Central guide tube inspection tool positioning pin; 14. Central headrest guide tube inspection tool; 15. Headrest guide tube inspection tool placement slot; 16. Frame central armrest mounting hole coaxiality inspection tool; 17. Frame central armrest limiting rivet inspection tool; 18. Frame central armrest mounting hole inspection pin; 19. Frame central fixed leg clamping detection mechanism; 20. Frame side leg detection mechanism; 21. Frame back plate position detection plate; 22. Inspection wheel; 23. Clamping block body; 24. A. Reference clamping post, 25. Clamping block mounting post connecting stud, 26. Connecting stud screw head, 27. Clamping block handle, 28. Side headrest guide tube detection base, 29. B. Reference positioning slot, 30. Central headrest guide tube detection base, 31. Central outrigger detection column, 32. Central outrigger contour detection elliptical pin, 33. Central outrigger positioning diamond pin, 34. Central outrigger clamping clamp, 35. Central outrigger clamping pad, 36. Side outrigger detection column, 37. Detection swing arm hinge seat, 38. Side outrigger detection swing arm, 39. Side outrigger detection pin, 40. Detection swing arm positioning pin, 41. Detection swing arm buffer pad, 42. Rear seat frame to be tested. Detailed Implementation

[0020] according to Figures 1-8The specific structure of this utility model is described in detail. This lightweight automotive rear seat frame precise dimension detection device includes a fixture carriage 1, the interior of which can be used to store quality inspection tools. A horizontally arranged fixture base plate 2 is provided on the top of the fixture carriage 1, the height of which is approximately above waist level, thus eliminating the need for bending over during inspection and reducing work intensity. Four sets of fixture wheels 22 with brakes are provided at the bottom of the fixture carriage 1 for easy movement of the device. Three sets of vertically arranged frame A reference support blocks 3 are provided in the middle of the fixture base plate 2, with a frame A reference pressure block mounting post 4 located between the three sets of frame A reference support blocks 3. Simultaneously, a frame A reference clamping block 5, which connects to the upper end of the frame A reference pressure block mounting post 4 and fixes the middle of the rear seat frame 42 to be inspected, preventing its Z-axis movement, can be placed in the frame A reference pressure block placement slot 6 on the right side of the fixture base plate 2 when not in use.

[0021] The frame A reference clamping block 5 is composed of a clamping block body 23. Three sets of A reference clamping pins 24 are provided on the lower side of the clamping block body 23. A downwardly arranged clamping block mounting pin connecting stud 25 is provided in the middle of the three sets of A reference clamping pins 24. The clamping block mounting pin connecting stud 25 is rotatably located in the middle of the lower side of the clamping block body 23, and the clamping block mounting pin connecting stud 25 extends to one end above the clamping block body 23. A connecting stud screwing head 26 is also provided. A clamping block handle 27 is provided on the upper side of the clamping block body 23 for easy gripping. Furthermore, the three sets of A-reference clamping pins 24 on the lower side of the frame A-reference clamping block 5 are used to clamp the A-reference in the middle of the rear seat frame 42 to be tested. The connecting stud screw head 26 is used to drive the clamping block mounting pin connecting stud 25 to rotate, so as to connect the clamping block mounting pin connecting stud 25 with the threaded hole at the upper end of the frame A-reference clamping block mounting pin 4, thereby restricting the movement of the rear seat frame 42 to be tested in the Z direction, which facilitates subsequent testing.

[0022] A central headrest tube detection mechanism 12 is provided on the front side of the three sets of frame A reference support blocks 3. The central headrest tube detection mechanism 12 includes a central headrest tube detection base 30 connected to the fixture base plate 2. On the upper part of the central headrest tube detection base 30, there are two sets of headrest tube fixture insertion holes 9 arranged in parallel for inserting the central headrest tube fixture 14. The upper side of the headrest tube fixture insertion holes 9 is also provided with central headrest tube fixture positioning pins 13. Thus, the central headrest tube fixtures 14 are inserted into the headrest tube fixture insertion holes 9 of the central headrest tube detection mechanism 12, and the position of the central headrest tube fixtures 14 is fixed by the central headrest tube fixture positioning pins 13, thereby detecting the central headrest tube on the rear seat frame 42 to be tested.

[0023] On the left and right sides of the central headrest tube detection mechanism 12, symmetrical side headrest tube detection mechanisms 7 are arranged, and each side headrest tube detection mechanism 7 has a skeleton B reference positioning block 8 on its upper part. The side headrest tube detection mechanism 7 includes a side headrest tube detection base 28 connected to the inspection base plate 2. The upper part of the side headrest tube detection base 28 is also provided with two sets of headrest tube inspection tool insertion holes 9 arranged in parallel. The sides of the headrest tube inspection tool insertion holes 9 are respectively provided with side tube inspection tool positioning pins 10. The skeleton B reference positioning block 8 is arranged on the top of the side headrest tube detection base 28. The front end of the skeleton B reference positioning block 8 is provided with a B reference positioning groove 29. A sliding block is also provided above the B reference positioning groove 29. The side headrest guide tube gauges 11 are then inserted into the headrest guide tube gauge insertion holes 9 of the side headrest guide tube testing mechanism 7, and the side headrest guide tube gauges 11 are fixed in position using the side guide tube gauge positioning pins 10, so as to test the side headrest guide tubes on the rear seat frame 42 to be tested; and the B reference of the rear seat frame 42 to be tested is positioned and fixed by the B reference positioning slot 29 and the sliding block at the front end of the frame B reference positioning block 8 at the top of the side headrest guide tube testing mechanism 7. Moreover, when not in use, the center headrest guide tube gauge 14 and the side headrest guide tube gauges 11 can be placed in the headrest guide tube gauge placement slot 15 provided on the left side of the gauge base plate 2.

[0024] In addition, a frame mid-leg clamping detection mechanism 19 is provided at the center of the rear side of the three sets of frame A reference support blocks 3. The frame mid-leg clamping detection mechanism 19 includes two sets of vertically and symmetrically arranged mid-leg detection columns 31, the bottom of which is connected to the gauge base plate 2. Furthermore, a mid-leg positioning diamond pin 33 is provided on the inclined top of one set of mid-leg detection columns 31, and a mid-leg contour detection elliptical pin 32 is provided on the inclined top of the other set of mid-leg detection columns 31. At the same time, a mid-leg clamping clamp 34 is rotatably provided on the upper part of each mid-leg detection column 31, and a mid-leg clamping pad 35 is provided on the inclined top of the mid-leg detection column 31 where it contacts the mid-leg clamping clamp 34 for easy replacement after wear. The two central fixed legs of the rear seat frame 42 to be tested are placed on the inclined tops of the two sets of central support leg detection columns 31, and positioned by the central support leg positioning diamond pins 33 set on the inclined tops of one set of central support leg detection columns 31. The two central fixed legs are clamped by the central support leg clamping clamps 34. Then, the central fixed legs are tested by the central support leg contour detection elliptical pins 32 set on the inclined tops of the other set of central support leg detection columns 31.

[0025] On the left and right sides of the frame-fixed leg clamping detection mechanism 19 and at the left and right ends of the fixture base plate 2, frame side leg detection mechanisms 20 are also respectively provided. The frame side leg detection mechanism 20 includes a side leg detection column 36 connected to the fixture base plate 2. A detection swing rod hinge seat 37 is provided on the upper part of the side leg detection column 36, and a side leg detection swing rod 38 is rotatably mounted on the detection swing rod hinge seat 37. One end of the side leg detection swing rod 38 is hinged to the detection swing rod hinge seat 37, and the other end of the side leg detection swing rod 38 is provided with a side leg detection pin 39. Furthermore, a detection swing rod positioning pin 40 is also provided on the detection swing rod hinge seat 37; a detection swing rod buffer pad 41 is provided between the hinged end of the side leg detection swing rod 38 and the upper part of the side leg detection column 36. Furthermore, after the rear seat frame 42 to be inspected is positioned on the fixture base plate 2, the side support leg detection swing rods 38 of the side support leg detection mechanisms 20 on both sides of the frame swing down to a horizontal position, and the position of the side support leg detection swing rods 38 is fixed by the detection swing rod positioning pins 40; then, the side support legs on both sides of the rear seat frame 42 to be inspected are detected using the side support leg detection pins 39 provided at the ends of the side support leg detection swing rods 38. Moreover, between the frame middle fixed support leg clamping detection mechanism 19 and the frame A reference pressure block mounting column 4, there are respectively a frame central armrest mounting hole coaxiality checker 16, a frame central armrest mounting hole detection pin 18, and a frame central armrest limiting rivet checker 17; several sets of vertically arranged frame back plate position detection plates 21 are also provided around the periphery of the fixture base plate 2.

[0026] When using this lightweight automotive rear seat frame precise dimension detection device, firstly, the rear seat frame 42 to be tested is placed on the inspection fixture base plate 2 of the detection device, and the A reference surface of the rear seat frame is supported by the three sets of frame A reference support blocks 3 in the middle; then, the three sets of A reference clamping pins 24 on the lower side of the frame A reference clamping block 5 are used to clamp the A reference in the middle of the rear seat frame 42 to be tested, and the connecting stud screw head 26 is used to drive the clamping block mounting pin connecting stud 25 to rotate, and the clamping block mounting pin connecting stud 25 is threadedly connected to the threaded hole at the upper end of the frame A reference clamping block mounting pin 4, thereby realizing the positioning of the rear seat frame A reference and restricting the movement of the rear seat frame 42 to be tested in the Z direction. Then, the B-reference hooks on both sides of the upper end of the rear seat frame 42 to be tested (the end with the headrest guide) are hooked into the B-reference positioning slot 29 at the front end of the frame B-reference positioning block 8 at the top of the side headrest guide detection mechanism 7, and the sliding block is slid forward to restrict the B-reference of the rear seat frame in the slot, thereby restricting the movement of the rear seat frame 42 to be tested in the X direction. Subsequently, the middle fixed leg at the lower end of the rear seat frame 42 to be tested is placed on the inclined top of the two sets of middle fixed leg detection columns 31 of the frame middle fixed leg clamping detection mechanism 19, and positioned by the middle fixed leg positioning diamond pin 33 set on the inclined top of one set of middle fixed leg detection columns 31, and the middle fixed leg is clamped by the middle fixed leg clamping clamp 34, thereby restricting the movement of the rear seat frame 42 to be tested in the Y direction.

[0027] After the X, Y, and Z directions of the rear seat frame 42 to be tested are restricted, the position of the mounting holes of the central fixed support legs is detected using the central support leg conformal detection elliptical pins 32 set on the inclined top of another set of central support leg detection columns 31 of the frame central fixed support leg clamping detection mechanism 19. Then, the side headrest guide gauges 11 are inserted sequentially from the four headrest guide gauge insertion holes 9 of the side headrest guide detection mechanisms 7 into the four side headrest guides on both sides of the upper end of the rear seat frame 42 to be tested. After the side headrest guide gauges 11 are inserted, the insertion position of the side headrest guide gauges 11 is fixed by the side guide gauge positioning pins 10 to detect the size and position of the four side headrest guides on both sides of the upper end of the rear seat frame 42 to be tested. Similarly, the central headrest tube gauge 14 is inserted from the two headrest tube gauge insertion holes 9 of the central headrest tube detection mechanism 12 into the two side headrest tubes at the upper middle part of the rear seat frame 42 to be tested, and the insertion position of the central headrest tube gauge 14 is fixed by the central tube gauge positioning pin 13, so as to detect the position and size of the central headrest tube at the upper end of the rear seat frame 42 to be tested.

[0028] Then, the side support leg detection levers 38 of the side support leg detection mechanisms 20 on both sides of the frame are swung downwards to a horizontal position, and the position of the side support leg detection levers 38 is fixed by the detection lever positioning pins 40; and the position dimensions of the side support legs on both sides of the rear seat frame 42 to be tested are detected by pressing the side support leg detection pins 39 at the end of the side support leg detection levers 38. The position dimensions of the limiting rivets on the left and right center armrest mounting brackets are detected by using the frame center armrest mounting hole detection pins 18, and the position dimensions of the mounting holes on the right seat armrest mounting bracket are detected by using the frame center armrest mounting hole detection pins 18. The long rod-shaped frame center armrest mounting hole coaxiality detection lever 16 is inserted into the seat frame from the left to detect the coaxiality of the mounting holes on the left and right center armrest mounting brackets. At the same time, several sets of frame back panel position detection plates 21 arranged around the base plate 2 of the detection lever can detect the position of the rear seat frame back panel.

Claims

1. A lightweight automotive rear seat frame positioning precision dimension detection device, comprising a fixture carriage (1), a fixture base plate (2) provided on the top of the fixture carriage (1), and fixture wheels (22) with brakes provided on the bottom of the fixture carriage (1), characterized in that: The base plate (2) of the fixture is provided with several sets of vertically arranged skeleton A reference support blocks (3) in the middle. The skeleton A reference pressure block mounting column (4) is provided in the middle of the several sets of skeleton A reference support blocks (3). The skeleton A reference clamping block (5) is arranged in the skeleton A reference pressure block placement groove (6) provided on the right side of the base plate (2). The front side of the skeleton A reference support block (3) is provided with a central headrest tube detection mechanism (12). The left and right sides of the central headrest tube detection mechanism (12) are symmetrically provided with side headrest tube detection mechanisms (7). The central headrest tube fixture (14) and the side headrest tube fixture (11) are arranged in the headrest tube fixture placement groove (15) provided on the left side of the base plate (2). The upper part of the headrest tube detection mechanism (7) is provided with a skeleton B reference positioning block (8); the rear side of the skeleton A reference support block (3) is provided with a skeleton middle fixed leg clamping detection mechanism (19), and the left and right sides of the skeleton middle fixed leg clamping detection mechanism (19) are respectively provided with skeleton side leg detection mechanisms (20); between the skeleton middle fixed leg clamping detection mechanism (19) and the skeleton A reference pressure block mounting column (4), a skeleton central armrest mounting hole coaxiality gauge (16), a skeleton central armrest mounting hole detection pin (18) and a skeleton central armrest limiting rivet gauge (17) are respectively provided, and the periphery of the gauge base plate (2) is provided with several sets of vertically arranged skeleton back plate position detection plates (21).

2. The lightweight automotive rear seat frame positioning precision dimension detection device according to claim 1, characterized in that: The frame A reference clamping block (5) includes a clamping block body (23). Three sets of A reference clamping columns (24) are provided on the lower side of the clamping block body (23). A downwardly arranged clamping block mounting column connecting stud (25) is provided in the middle of the three sets of A reference clamping columns (24). The clamping block mounting column connecting stud (25) is rotatably set in the middle of the lower side of the clamping block body (23). A connecting stud screwing head (26) is provided at the end of the clamping block mounting column connecting stud (25) extending to the upper part of the clamping block body (23). A clamping block handle (27) is also provided on the upper side of the clamping block body (23) for easy gripping.

3. The lightweight automotive rear seat frame positioning precision dimension detection device according to claim 1, characterized in that: The central headrest tube detection mechanism (12) includes a central headrest tube detection base (30) connected to the base plate (2). The upper part of the central headrest tube detection base (30) is provided with two sets of parallel headrest tube gauge insertion holes (9). The upper side of the headrest tube gauge insertion holes (9) is provided with central tube gauge positioning pins (13).

4. The lightweight automotive rear seat frame positioning precision dimension detection device according to claim 1, characterized in that: The side headrest tube detection mechanism (7) includes a side headrest tube detection base (28) connected to the inspection base plate (2). The upper part of the side headrest tube detection base (28) is provided with two sets of headrest tube inspection tool insertion holes (9) arranged in parallel. The side of the headrest tube inspection tool insertion hole (9) is provided with a side tube inspection tool positioning pin (10). The top of the side headrest tube detection base (28) is also provided with a skeleton B reference positioning block (8). The front end of the skeleton B reference positioning block (8) is provided with a B reference positioning slot (29). A sliding block is also provided above the B reference positioning slot (29).

5. The lightweight automotive rear seat frame positioning precision dimension detection device according to claim 1, characterized in that: The frame mid-section fixed leg clamping detection mechanism (19) includes two sets of vertically arranged mid-section leg detection columns (31). The bottom of the mid-section leg detection columns (31) is connected to the inspection base plate (2). One set of mid-section leg detection columns (31) is provided with a mid-section leg positioning diamond pin (33) on its inclined top, and the other set of mid-section leg detection columns (31) is provided with a mid-section leg contour detection elliptical pin (32) on its inclined top. The upper part of each mid-section leg detection column (31) is rotatably provided with a mid-section leg clamping clamp (34). The mid-section leg clamping pad (35) is also provided on the inclined top of the mid-section leg detection column (31) at the part that contacts the mid-section leg clamping clamp (34).

6. The lightweight automotive rear seat frame positioning precision dimension detection device according to claim 1, characterized in that: The frame side support leg detection mechanism (20) includes a side support leg detection column (36) connected to the inspection base plate (2). A detection swing arm hinge seat (37) is provided on the upper part of the side support leg detection column (36). A side support leg detection swing arm (38) is rotatably provided on the detection swing arm hinge seat (37). One end of the side support leg detection swing arm (38) is hinged to the detection swing arm hinge seat (37). The other end of the side support leg detection swing arm (38) is provided with a side support leg detection pin (39). Furthermore, a detection swing arm positioning pin (40) is also provided on the detection swing arm hinge seat (37). A detection swing arm buffer pad (41) is provided between the hinge end of the side support leg detection swing arm (38) and the upper part of the side support leg detection column (36).

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