Combined rack for automobile seat assembly

Abstract

The invention discloses an automobile seat assembly combined material rack which comprises a material rack body and a positioning device arranged on the material rack body and used for positioning an automobile seat assembly, the material rack body is provided with a positioning pin and a positioning hole, and when two automobile seat assembly combined material racks are in a combined state, the positioning pin is inserted into the positioning hole. The positioning pins of the upper automobile seat assembly combined material frame are inserted into the positioning holes in the lower automobile seat assembly combined material frame. According to the combined rack for the automobile seat assembly, the principle that parts are placed in a staggered mode can be fully utilized, the volume ratio of the rack is increased, the transportation and storage size is reduced, and cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of packaging appliances, and more specifically, the present invention relates to a combined rack for an automotive seat assembly. Background Art

[0002] Currently, the rack used for transporting automotive seat assemblies is designed to match the seat structure, and the shape of the rack is an L-shaped special-shaped structure.

[0003] The rack with the above shape has a low volume ratio, and the volume ratio of a single rack is only 50%, which makes the automotive seat assembly extremely occupy inventory space during transportation and storage, resulting in high warehousing and transportation costs and causing waste of costs.

[0004] For example, the patent document with the publication number CN104477501A discloses a rack for transporting automotive seats, which includes a rack bottom frame and rack side frames located on the left and right sides of the rack. A bottom plate is installed on the rack bottom frame, and a baffle is installed on the rack side frames. Front pads and rear pads for placing seat feet are fixed on the bottom plate. A front limiting mechanism for pressing the seat feet above the front pad is arranged on one side of the front pad, and a rear limiting mechanism for pressing the seat feet above the rear pad is arranged on one side of the rear pad. A limiting bar is horizontally arranged between the rack side frames. The technical solution disclosed in this patent document also cannot solve the above-mentioned technical problems. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a combined rack for an automotive seat assembly, aiming to improve the volume ratio and reduce the warehousing and transportation costs.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows: A combined rack for an automotive seat assembly includes a rack body and a positioning device arranged on the rack body and used for positioning the automotive seat assembly. Positioning pins and positioning holes are arranged on the rack body. When two combined racks for automotive seat assemblies are in a combined state, the positioning pins of the combined rack for automotive seat assemblies located above are inserted into the positioning holes of the combined rack for automotive seat assemblies located below.

[0007] A plurality of the positioning pins and the positioning holes are provided, and the number of the positioning pins is the same as that of the positioning holes.

[0008] The positioning pins are cylindrical, and the positioning holes are round holes.

[0009] The positioning device includes a first positioning block and a second positioning block arranged on the rack body, and positioning grooves are arranged on the first positioning block and the second positioning block.

[0010] A first bolt is provided on the first positioning block, and a first nut is provided on the first bolt. The first bolt and the first nut cooperate to fix the vehicle seat assembly on the first positioning block.

[0011] A second bolt is provided on the second positioning block, and a second nut is provided on the second bolt. The second bolt and the second nut cooperate to fix the vehicle seat assembly on the second positioning block.

[0012] A plurality of the first positioning blocks and a plurality of the second positioning blocks are provided. All the first positioning blocks and all the second positioning blocks are respectively on a straight line parallel to the first direction, and each first positioning block and a corresponding second positioning block are respectively on a straight line parallel to the second direction.

[0013] The rack body includes a chassis, a first corner plate and a second corner plate provided on the chassis, a first gantry provided on the first corner plate, and a second gantry provided on the second corner plate. The first gantry and the second gantry are configured to be switchable between a support position and a tipping position, and the positioning device is provided on the chassis and located between the first gantry and the second gantry.

[0014] The first gantry includes a first upright column inserted into the first corner plate and a first cross beam connected to the first upright column. The second gantry includes a second upright column inserted into the second corner plate and a second cross beam connected to the second upright column.

[0015] The vehicle seat assembly combined rack of the present invention can fully utilize the principle of staggered placement of parts, improve the volume ratio of the rack, save transportation and storage volume, and reduce costs. Description of the Drawings

[0016] This specification includes the following drawings, and the shown contents are respectively:

[0017] Figure 1 It is a schematic structural diagram of the vehicle seat assembly combined rack of the present invention;

[0018] Figure 2 It is a schematic structural diagram of two vehicle seat assembly combined racks of the present invention when placed side by side;

[0019] Figure 3 It is a schematic structural diagram of two vehicle seat assembly combined racks of the present invention in a combined state;

[0020] The labels in the figure are: 1, the first corner plate; 2, the second corner plate; 3, the first cross beam; 4, the second cross beam; 5, the chassis; 6, the first protrusion; 7, the second protrusion; 8, the first positioning block; 9, the second positioning block; 10, the first bolt; 11, the second bolt; 12, the positioning pin; 13, the positioning hole; 14, the first reinforcing beam; 15, the second reinforcing beam; 16, the first column; 17, the second column; 18, the anti - detachment pin shaft; 19, the connecting plate. Detailed implementation mode

[0021] The following is a more detailed description of the specific implementation mode of the present invention by referring to the accompanying drawings and describing the embodiments, aiming to help those skilled in the art have a more complete, accurate and in - depth understanding of the concept and technical solution of the present invention and facilitate its implementation.

[0022] As Figures 1 to 3 shown, the present invention provides a combined rack for an automobile seat assembly, including a rack body and a positioning device arranged on the rack body and used for positioning the automobile seat assembly. A positioning pin 12 and a positioning hole 13 are arranged on the rack body. When two combined racks for automobile seat assemblies are in a combined state, the positioning pin 12 of the combined rack for automobile seat assembly located above is inserted into the positioning hole 13 of the combined rack for automobile seat assembly located below, and the positioning pin 12 of the combined rack for automobile seat assembly located below is inserted into the positioning hole 13 of the combined rack for automobile seat assembly located above, so that the two combined racks for automobile seat assemblies can be accurately aligned in the vertical direction.

[0023] Specifically, as Figures 1 to 3 shown, a plurality of positioning pins 12 and positioning holes 13 are provided, and the number of positioning pins 12 is the same as that of positioning holes 13. All the positioning pins 12 and all the positioning holes 13 are respectively on a straight line parallel to the first direction, and each positioning pin 12 and a positioning hole 13 are respectively on a straight line parallel to the second direction. The first direction and the second direction are both horizontal directions and are perpendicular to each other. When two combined racks for automobile seat assemblies are in a combined state, each positioning pin 12 of the combined rack for automobile seat assembly located above is respectively inserted into a positioning hole 13 of the combined rack for automobile seat assembly located below, and each positioning pin 12 of the combined rack for automobile seat assembly located below is respectively inserted into a positioning hole 13 of the combined rack for automobile seat assembly located above.

[0024] In this embodiment, as Figure 1 shown, the positioning pin 12 is cylindrical, the positioning hole 13 is a round hole, the axes of the positioning pin 12 and the positioning hole 13 are vertical lines, and the diameter of the positioning pin 12 is approximately equal to the diameter of the positioning hole 13.

[0025] As Figures 1 to 3As shown in the figure, the positioning device includes a first positioning block 8 and a second positioning block 9 provided on the rack body, and positioning grooves are provided on the first positioning block 8 and the second positioning block 9. A plurality of first positioning blocks 8 and second positioning blocks 9 are provided. All the first positioning blocks 8 and all the second positioning blocks 9 are respectively on a straight line parallel to the first direction, and each first positioning block 8 and a second positioning block 9 are respectively on a straight line parallel to the second direction. The vehicle seat assembly includes a seat part and a backrest part connected to the seat part. The seat part is placed on the first positioning block 8 and the second positioning block 9, and the seat part is inserted into the positioning grooves on the first positioning block 8 and the second positioning block 9. The first positioning block 8 and the second positioning block 9 cooperate to position the seat part to ensure accurate seat positioning.

[0026] As Figures 1 to 3 shown in the figure, a first bolt 10 is provided on the first positioning block 8, and a first nut is provided on the first bolt 10. The first bolt 10 and the first nut cooperate to fix the vehicle seat assembly on the first positioning block 8. A second bolt 11 is provided on the second positioning block 9, and a second nut is provided on the second bolt 11. The second bolt 11 and the second nut cooperate to fix the vehicle seat assembly on the second positioning block 9. The first bolt 10 and the second bolt 11 are vertically arranged, and through holes for the first bolt 10 and the second bolt 11 to be inserted respectively are provided on the seat part. Through the cooperation of the bolts and nuts, the vehicle seat assembly can be fixed on the first positioning block 8 and the second positioning block 9 to prevent the vehicle seat assembly from shaking.

[0027] As Figures 1 to 3 shown in the figure, two first positioning blocks 8 and two second positioning blocks 9 are provided. One first bolt 10 is provided on the first positioning block 8, and one second bolt 11 is provided on the second positioning block 9.

[0028] As Figures 1 to 3 shown in the figure, the rack body includes a chassis 5, a first corner plate 1 and a second corner plate 2 provided on the chassis 5, a first gantry provided on the first corner plate 1, and a second gantry provided on the second corner plate 2. The first gantry and the second gantry are arranged to be switchable between a support position and a tipping position. The positioning device is provided on the chassis 5 and the positioning device is located between the first gantry and the second gantry.

[0029] As Figures 1 to 3As shown, the first gantry and the second gantry are configured to be switchable between a support position and a tipping position, and the positioning device is located between the first gantry and the second gantry. The chassis 5 is horizontally arranged, the length direction of the chassis 5 is parallel to the first direction, the width direction of the chassis 5 is parallel to the second direction, and the positioning device is installed on the top surface of the chassis 5. The support position of the first gantry is above the tipping position. When the first gantry is in the support position, the first gantry is in a vertical state; when the first gantry is in the tipping position, the first gantry is in a horizontal state. The support position of the second gantry is above the tipping position. When the second gantry is in the support position, the second gantry is in a vertical state; when the second gantry is in the tipping position, the second gantry is in a horizontal state. When both the first gantry and the second gantry are in the tipping position, the rack body is in a folded state, and at this time the first gantry and the second gantry are laid down on the chassis 5; when both the first gantry and the second gantry are in the support position, the rack body is in an unfolded state, and at this time the first gantry extends above the first corner plate 1, and the second gantry extends above the second corner plate 2.

[0030] As Figures 1 to 3As shown, the first gantry includes a first vertical column 16 inserted into the first corner plate 1 and a first cross beam 3 connected to the first vertical column 16. A positioning pin 12 and a positioning hole 13 are provided on the first cross beam 3. Two first corner plates 1 are provided, and the two first corner plates 1 are on the same straight line parallel to the second direction, and the first corner plates 1 are vertically arranged. Two first vertical columns 16 are provided. The first cross beam 3 is located between the two first vertical columns 16, and both ends in the length direction of the first cross beam 3 are fixedly connected to the two first vertical columns 16 respectively. The length direction of the first cross beam 3 is parallel to the second direction. The first vertical column 16 is connected to the first corner plate 1 through a first pin shaft. The axis of the first pin shaft is parallel to the second direction. The first corner plate 1 has a first pin hole for the first pin shaft to insert, and this first pin hole is an oval hole. The first pin hole extends vertically on the first corner plate 1. The length of the first pin hole is greater than the diameter of the first pin shaft and less than the length of the first corner plate 1. The first vertical column 16 has a shaft hole for the first pin shaft to pass through, and this shaft hole is a round hole. The diameter of this shaft hole is the same as the diameter of the first pin shaft. The first pin shaft is fixedly connected to the first vertical column 16. The length of the first pin hole determines the stroke of the first vertical column 16 moving up and down relative to the first corner plate 1. The first corner plate 1 has a first slot for accommodating the first vertical column 16 and a first limiting slot above the first pin shaft. The first pin hole is located below the first limiting slot. A first protrusion 6 is provided on the first vertical column 16 for being embedded in the first limiting slot to keep the first vertical column 16 in a vertical state. The first slot is a groove formed by extending downward vertically from the top surface of the first corner plate 1 towards the inside of the first corner plate 1. An opening is formed on the side surface of the first corner plate 1 for the first slot, and an opening for the first vertical column 16 to pass through is also formed on the top surface of the first corner plate 1. The opening on the top surface of the first corner plate 1 is communicated with the opening on the side surface, so that the first vertical column 16 can move up and down and rotate relative to the first corner plate 1, realizing the position switching of the first gantry. Two first pin holes are provided. The first slot is located between the two first pin holes. The first pin holes are provided on the side wall of the first corner plate 1 perpendicular to the first direction. The two first pin holes are aligned in position. Both ends of the first pin shaft pass through the two first pin holes respectively and extend outwards from the first corner plate 1. The first vertical column 16 is located between the two first pin holes. The first slot is a rectangular slot, and the first vertical column 16 is a column with a rectangular cross section. When the first gantry is in the support position, the lower end of the first vertical column 16 in the vertical state is inserted into the first slot, and the first protrusion 6 is inserted into the first limiting slot.The first limiting groove is arranged at the top of the first corner plate 1. The first limiting groove is a groove extending downward from the top surface of the first corner plate 1 towards the inside of the first corner plate 1. The first limiting groove is preferably a V-shaped groove. Two first limiting grooves are provided. The first slot is located between the two first limiting grooves. Each first pin hole is respectively located below a first limiting groove. The two first limiting grooves are arranged on two opposite side walls of the first corner plate 1 perpendicular to the first direction. The positions of the two first limiting grooves are aligned, and the two first limiting grooves are on the same straight line parallel to the first direction. The first protrusion 6 is arranged on the first column 16 and protrudes towards the outside of the first column 16. Two first protrusions 6 are provided and the two first protrusions 6 are arranged on two opposite outer wall surfaces of the first column 16. The two first protrusions 6 are respectively used to be inserted into a first limiting groove. The first protrusion 6 cooperates with the first limiting groove to limit the first column 16 in the second direction and the vertical direction, preventing the first column 16 from rotating relative to the first corner plate 1. The shape of the first protrusion 6 matches the shape of the first limiting groove.

[0031] When it is necessary to switch the first gantry from the support position to the overturned position, that is, when the first column 16 is switched from the vertical state to the horizontal state, first lift the first gantry upward to move the first protrusion 6 out of the first limiting groove, and the first pin shaft moves upward along the first pin hole. Then rotate the first gantry downward until the first gantry is laid down on the top surface of the chassis 5. The laid-down first gantry is in a horizontal state, and the first gantry is switched to the overturned position. After the first gantry is laid down, it is convenient for the storage rack to be stored, the height of the storage rack is reduced, and the space occupied by the storage rack is reduced.

[0032] Such as Figures 1 to 3As shown, the second gantry includes a second upright column 17 inserted into the second corner plate 2 and a second cross beam 4 connected to the second upright column 17. A positioning pin 12 and a positioning hole 13 are provided on the second cross beam 4. Two second corner plates 2 are provided, and the two second corner plates 2 are on the same straight line parallel to the second direction. The second corner plates 2 are vertically arranged, and each first corner plate 1 is on the same straight line parallel to the first direction with one second corner plate 2. Two second upright columns 17 are provided. The second cross beam 4 is located between the two second upright columns 17, and both ends in the length direction of the second cross beam 4 are fixedly connected to the two second upright columns 17 respectively. The length direction of the second cross beam 4 is parallel to the second direction. The second upright column 17 is connected to the second corner plate 2 through a second pin shaft. The axis of the second pin shaft is parallel to the second direction. The second corner plate 2 has a second pin hole for the second pin shaft to be inserted, and the second pin hole is an elongated hole. The second pin hole extends vertically on the second corner plate 2. The length of the second pin hole is greater than the diameter of the second pin shaft and less than the length of the second corner plate 2. The second upright column 17 has a shaft hole for the second pin shaft to pass through, and the shaft hole is a round hole. The diameter of the shaft hole is the same as the diameter of the second pin shaft. The second pin shaft is fixedly connected to the second upright column 17. The length of the second pin hole determines the stroke of the second upright column 17 moving up and down relative to the second corner plate 2. The second corner plate 2 has a second slot for accommodating the second upright column 17 and a second limiting slot located above the second pin shaft. The second pin hole is located below the second limiting slot. A second protrusion 9 is provided on the second upright column 17 for being embedded in the second limiting slot to keep the second upright column 17 in a vertical state. The second slot is a groove formed by extending downward vertically from the top surface of the second corner plate 2 towards the inside of the second corner plate 2. The second slot forms an opening on the side surface of the second corner plate 2. The second slot also forms an opening on the top surface of the second corner plate 2 for the second upright column 17 to pass through. The opening on the top surface of the second corner plate 2 is communicated with the opening on the side surface, so that the second upright column 17 can move up and down and rotate relative to the second corner plate 2 to realize the position switching of the second gantry. Two second pin holes are provided. The second slot is located between the two second pin holes. The second pin holes are provided on the side wall of the second corner plate 2 perpendicular to the first direction. The two second pin holes are aligned. Both ends of the second pin shaft pass through the two second pin holes respectively and extend out of the second corner plate 2. The second upright column 17 is located between the two second pin holes. The second slot is a rectangular slot. The second upright column 17 is a column with a rectangular cross section. When the second gantry is in the support position, the lower end of the second upright column 17 in the vertical state is inserted into the second slot, and the second protrusion 9 is inserted into the second limiting slot.The second limiting groove is provided at the top of the second corner plate 2. The second limiting groove is a groove extending downward from the top surface of the second corner plate 2 towards the interior of the second corner plate 2. The second limiting groove is preferably a V-shaped groove. Two second limiting grooves are provided. The second slot is located between the two second limiting grooves. Each second pin hole is respectively located below one second limiting groove. The two second limiting grooves are provided on two opposite side walls of the second corner plate 2 perpendicular to the first direction. The two second limiting grooves are aligned in position and are on the same straight line parallel to the first direction. The second protrusion 9 is provided on the second column 17 and protrudes towards the outside of the second column 17. Two second protrusions 9 are provided and are provided on two opposite outer wall surfaces of the second column 17. The two second protrusions 9 are respectively used to be inserted into one second limiting groove. The second protrusion 9 cooperates with the second limiting groove to limit the second column 17 in the second direction and the vertical direction, preventing the second column 17 from rotating relative to the second corner plate 2. The shape of the second protrusion 9 matches the shape of the second limiting groove.

[0033] When it is necessary to switch the second gantry from the support position to the overturned position, that is, when the second column 17 is switched from the vertical state to the horizontal state, first lift the second gantry upward so that the second protrusion 9 is removed from the second limiting groove, and the second pin shaft moves upward along the second pin hole. Then rotate the second gantry downward until the second gantry is laid down on the top surface of the chassis 5. The laid-down second gantry is in a horizontal state, and the second gantry is switched to the overturned position. After the second gantry is laid down, it is convenient for the storage of the rack, the height of the rack is reduced, and the space occupied by the rack is reduced.

[0034] As Figures 1 to 3 shown, the first gantry further includes a first reinforcing beam 14 connected to the two first columns 16. The first reinforcing beam 14 is located between the two first columns 16 and is fixedly connected to the two first columns 16. The length direction of the first reinforcing beam 14 is parallel to the length direction of the first cross beam. The first reinforcing beam 14 is located between the first cross beam and the chassis 5. The second gantry further includes a second reinforcing beam 15 connected to the two second columns 17. The second reinforcing beam 15 is located between the two second columns 17 and is fixedly connected to the two second columns 17. The length direction of the second reinforcing beam 15 is parallel to the length direction of the second cross beam. The second reinforcing beam 15 is located between the second cross beam and the chassis 5. The setting of the reinforcing beam can improve the structural strength of the gantry, and thus can improve the load-bearing capacity of the rack.

[0035] As Figures 1 to 3 shown, the vehicle seat assembly of the present invention further includes a connecting plate 19 and an anti-disengagement pin shaft 18. The connecting plate 19 is rotatably provided on the rack body. The rotation center line of the connecting plate 19 is parallel to the first direction. A jack for inserting the anti-disengagement pin shaft 18 is provided on the connecting plate 19.

[0036] As Figures 1 to 3 shown, connecting plates 19 are provided on both the first gantry and the second gantry, and the connecting plates 19 provided on the first gantry and the second gantry are on the same straight line parallel to the first direction. Anti-disengagement pin shafts 18 are provided on both the first gantry and the second gantry, and the anti-disengagement pin shafts 18 provided on the first gantry and the second gantry are on the same straight line parallel to the first direction.

[0037] During use, the first gantry and the second gantry are in the supporting position. As Figure 2 shown, during use, first place two automotive seat assembly combination racks loaded with automotive seat assemblies side by side, and the two automotive seat assembly combination racks loaded with automotive seat assemblies are on the same straight line parallel to the second direction. Rotate the connecting plate 19 on one of the automotive seat assembly combination racks upward to the horizontal state, and then insert the anti-disengagement pin shaft 18 on the other automotive seat assembly combination rack into the jack on the connecting plate 19 in the horizontal state to achieve the preliminary connection of the two automotive seat assembly combination racks; then rotate one of the racks 180 degrees upward to switch the two automotive seat assembly combination racks to the combined state.

[0038] As Figure 3As shown in the figure, when two combined racks for automotive seat assemblies, each loaded with an automotive seat assembly, are in the combined state, the positioning pins 12 on the upper combined rack for automotive seat assemblies are respectively inserted into one positioning hole 13 on the lower combined rack for automotive seat assemblies, and the positioning pins 12 on the lower combined rack for automotive seat assemblies are respectively inserted into one positioning hole 13 on the upper combined rack for automotive seat assemblies. The seat part of the automotive seat assembly on the upper combined rack for automotive seat assemblies is directly above the seat part of the automotive seat assembly on the lower combined rack for automotive seat assemblies. The backrest of the automotive seat assembly on the upper combined rack for automotive seat assemblies and the backrest of the automotive seat assembly on the lower combined rack for automotive seat assemblies are on the same straight line parallel to the second direction, that is, the backrests of the two automotive seat assemblies are arranged oppositely. The first cross beam on the upper combined rack for automotive seat assemblies is on the top surface of the first cross beam on the lower combined rack for automotive seat assemblies. At the same time, the connecting plate 19 on the upper combined rack for automotive seat assemblies rotates downward to the vertical state, and the connecting plate 19 on the lower combined rack for automotive seat assemblies rotates upward to the vertical state. The anti - detachment pin shaft 18 on the lower combined rack for automotive seat assemblies is inserted into the jack on the connecting plate 19 of the upper combined rack for automotive seat assemblies, and the anti - detachment pin shaft 18 on the upper combined rack for automotive seat assemblies is inserted into the jack on the connecting plate 19 of the lower combined rack for automotive seat assemblies. Through the cooperation of the anti - detachment pin shaft 18 and the connecting plate 19, it can be used to limit the two combined racks for automotive seat assemblies in the vertical direction and fix the two combined racks for automotive seat assemblies together.

[0039] Since the two automotive seat assemblies adopt the principle of staggered placement, the space of the rack is fully utilized, thus achieving the effect of improving the loading rate.

[0040] The combined rack for automotive seat assemblies with the above structure has the following advantages:

[0041] 1. The rack has a small volume and a simple structure, saving the manufacturing cost compared with the original rack;

[0042] 2. After the two racks are loaded with parts, they are placed side by side, and then the anti - detachment pin shaft 18 and the connecting plate 19 are fixed and flipped 180°, assembled into a whole, saving 50% of the transportation and storage volume, and can save costs;

[0043] 3. After use, the rack can be folded, saving the empty - return transportation cost.

[0044] The present invention has been described exemplarily in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-mentioned manner. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention; or without improvement, the above-mentioned concept and technical solution of the present invention are directly applied to other occasions, they are all within the protection scope of the present invention.

Claims

1. An automotive seat assembly combined material rack, comprising a material rack body and a positioning device disposed on the material rack body and used for positioning the automotive seat assembly, wherein: The positioning pins and positioning holes are arranged on the rack body. When the two combined racks of vehicle seat assemblies are in the combined state, the positioning pins of the upper combined rack of vehicle seat assemblies are inserted into the positioning holes of the lower combined rack of vehicle seat assemblies.

2. The combined material rack for an automotive seat assembly according to claim 1, wherein: A plurality of the positioning pins and the positioning holes are provided, and the number of the positioning pins is the same as that of the positioning holes.

3. The combined material rack of the vehicle seat assembly according to claim 1, wherein: The positioning pins are cylindrical, and the positioning holes are round holes.

4. The combined material rack of the vehicle seat assembly according to any one of claims 1 to 3, characterized in that: The positioning device includes a first positioning block and a second positioning block arranged on the rack body, and positioning grooves are arranged on the first positioning block and the second positioning block.

5. The combined material rack of the vehicle seat assembly according to claim 4, wherein: A first bolt is arranged on the first positioning block, and a first nut is arranged on the first bolt. The first bolt is matched with the first nut to fix the vehicle seat assembly on the first positioning block.

6. The combined material rack of the vehicle seat assembly according to claim 4, characterized in that: A second bolt is arranged on the second positioning block, and a second nut is arranged on the second bolt. The second bolt is matched with the second nut to fix the vehicle seat assembly on the second positioning block.

7. The combined material rack of the vehicle seat assembly according to any one of claims 4 to 6, characterized in that: A plurality of the first positioning blocks and the second positioning blocks are provided. All the first positioning blocks and all the second positioning blocks are respectively on a straight line parallel to the first direction, and each first positioning block and a second positioning block are respectively on a straight line parallel to the second direction.

8. The combined material rack of the vehicle seat assembly according to any one of claims 1 to 7, characterized in that: The rack body includes a chassis, a first corner plate and a second corner plate arranged on the chassis, a first gantry arranged on the first corner plate, and a second gantry arranged on the second corner plate. The first gantry and the second gantry are arranged to be switchable between a support position and a tipping position, and the positioning device is arranged on the chassis and between the first gantry and the second gantry.

9. The combined material rack of the vehicle seat assembly according to claim 8, wherein: The first gantry includes a first upright column inserted into the first corner plate and a first cross beam connected to the first upright column. The second gantry includes a second upright column inserted into the second corner plate and a second cross beam connected to the second upright column.

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