Seat backrest mounting structure

Abstract

The utility model discloses a seat backrest installation structure which comprises a support, a plug pin and a sleeve, a limiting through hole is formed in the support, the first end of the plug pin is connected with a first seat backrest, the sleeve is connected with a second seat backrest, and the second end of the plug pin is rotationally connected in the limiting through hole and an inner cavity of the sleeve. According to the seat backrest mounting structure, the assembling step of connecting the cover plate and the support together in the prior art is omitted, so that the assembling efficiency is improved; the bracket near the limiting through hole has higher structural strength, so that the use experience of the seat backrest can be improved; the integration level of the seat backrest mounting structure is improved, so that the production efficiency is improved; compared with the prior art, the number of parts is reduced, the weight of the seat backrest mounting structure is reduced to a certain extent, and the weight control of the whole vehicle is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and more specifically, to a seat back mounting structure. Background Technology

[0002] Car seat backrests typically have an adjustable function, allowing occupants to adjust the seat back angle according to their comfort needs. Existing seat backrest mounting structures usually consist of multiple components. For example, a seat backrest mounting structure for a particular car model includes a cover plate and a bracket. The bracket is formed by welding left and right brackets, etc., through more than twenty sections of MIG welding. The bracket has open-type pivot limiting holes, through which the pivot is installed. The cover plate is then connected to the bracket via snap-fit ​​or other methods, and the pivot is limited by the cover plate and the bracket. Existing technologies have the following drawbacks: the welding and snap-fit ​​connections between components result in low overall structural strength; the large number of components leads to low integration of the seat backrest mounting structure, making it difficult to improve production efficiency; and the excessive number of components results in a large weight for the seat backrest mounting structure, which is detrimental to overall vehicle weight control. Utility Model Content

[0003] In view of this, the present invention aims to provide a seat back mounting structure and vehicle to solve at least one of the technical problems of existing seat back mounting structures, such as low overall structural strength, large number of parts, low integration, low production efficiency, and large weight.

[0004] This utility model provides a seat back mounting structure, including a bracket, a pin, and a sleeve. The bracket is provided with a limiting through hole. The first end of the pin is connected to a first seat back, the sleeve is connected to a second seat back, and the second end of the pin is rotatably connected to the limiting through hole and the inner cavity of the sleeve.

[0005] Furthermore, it also includes a first connecting plate and a first connecting shaft, the first connecting plate being connected to the inner plate of the first wheel cover, the third end of the first connecting shaft being connected to the first connecting plate, and the fourth end of the first connecting shaft being connected to the first seat back; it also includes a second connecting plate and a second connecting shaft, the second connecting plate being connected to the inner plate of the second wheel cover, the fifth end of the second connecting shaft being connected to the second connecting plate, and the sixth end of the second connecting shaft being connected to the second seat back.

[0006] Furthermore, the outer periphery of the pin is provided with a first protrusion, which is used to abut and limit the movement of the bracket; the outer periphery of the sleeve is provided with a second protrusion, which is used to abut and limit the movement of the bracket.

[0007] Furthermore, a first buffer is arranged between the pin and the bracket, and a second buffer is arranged between the sleeve and the bracket.

[0008] Furthermore, the bracket includes a bracket main board, a bracket base plate, and a bracket top plate. The limiting through hole is formed on the bracket top plate. The bracket top plate is integrally connected to the bracket main board. The bracket base plate is integrally connected to the bracket main board. The bracket base plate extends in the left and right direction to protrude from the bracket main board.

[0009] Furthermore, it also includes a first stiffening plate, which is disposed between the main support plate and the base plate of the support, and is disposed at the rear edge of the main support plate and the rear edge of the base plate of the support.

[0010] Furthermore, it also includes a second stiffener, which is disposed on the edge of the main support plate and extends to the left and right to protrude from the main support plate. The second stiffener is connected to the base plate of the support and forms a hollowed-out groove with a closed boundary.

[0011] Furthermore, at least one cylindrical rib is provided in the hollowed-out groove, and at least two strip ribs are provided around each cylindrical rib. The strip ribs extend radially until they are connected to the second rib plate and / or the support base plate.

[0012] Furthermore, the second stiffener includes a front stiffener, an upper stiffener, and a rear stiffener that are connected to each other. The middle part of the front stiffener is recessed to the rear to form a C-shaped structure, and the rear stiffener is arranged perpendicular to the upper side wall of the seat crossbeam.

[0013] Furthermore, the support base plate includes a first base plate and a second base plate integrally connected to each other. The first base plate and the second base plate are set at a first preset angle. The first base plate is installed on the front side wall of the seat crossbeam, and the second base plate is installed on the upper side wall of the seat crossbeam. The lower end of the front stiffener plate is provided with a first extension rib. The first extension rib extends to the front side of the first base plate and is integrally connected to the first base plate.

[0014] The seat back mounting structure of this utility model features a limiting through hole on the bracket. The second end of a pin is inserted into the limiting through hole and the inner cavity of the sleeve, allowing relative rotation between the pin and the bracket, and between the pin and the sleeve. This enables angle adjustment of both the first and second seat backrests, eliminating the assembly step of connecting the cover plate to the bracket in traditional technology, thus improving the assembly efficiency of the seat back mounting structure. The limiting through hole on the bracket in this utility model effectively limits the second end of the pin, essentially integrating the cover plate and bracket into a single unit. The bracket with limiting through holes in this utility model gives it higher structural strength near the limiting through holes, which is beneficial to improving the user experience of the first and second seat backs. Integrating two components (i.e., the cover plate and the bracket) in the traditional technology into one component (i.e., the bracket with limiting through holes) in this utility model improves the integration of the seat back mounting structure, thereby improving production efficiency. Compared with the traditional technology, this utility model reduces the number of components, which to some extent reduces the weight of the seat back mounting structure and is beneficial to the overall weight control of the vehicle.

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with or without letter suffixes may indicate different instances of similar parts. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method. The accompanying drawings, which are provided to further understand the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with their description, serve to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 This is one of the schematic diagrams of the seat back mounting structure in this utility model;

[0018] Figure 2 This is the second schematic diagram of the seat back installation structure in this utility model;

[0019] Figure 3 This is the third schematic diagram of the seat back installation structure in this utility model (showing the seat back);

[0020] Figure 4 This is a cross-sectional view of the first connecting shaft in this utility model (showing the seat back);

[0021] Figure 5 This is a cross-sectional view of the second connecting shaft in this utility model (showing the seat back);

[0022] Figure 6 This is an enlarged schematic diagram of the pin and sleeve in this utility model;

[0023] Figure 7 This is a schematic diagram of the assembly of the first seat back in this utility model;

[0024] Figure 8 This is a schematic diagram of the assembly of the second seat back in this utility model;

[0025] Figure 9 This is a schematic diagram of the bracket in this utility model.

[0026] The above figures include the following reference numerals:

[0027] 100. First seat back; 200. Second seat back; 300. First wheel cover inner panel; 400. Second wheel cover inner panel; 500. Seat crossbeam;

[0028] 1. Bracket; 11. Bracket main board; 12. Bracket base plate; 121. First base plate; 122. Second base plate; 13. Bracket top plate; 131. Limiting through hole; 2. Pin; 21. First end; 22. Second end; 23. First boss; 3. Sleeve; 31. Inner cavity; 32. Second boss; 4. First connecting plate; 5. First connecting shaft; 51. Third end; 52. Fourth end; 6. Second connecting plate; 7. Second connecting shaft; 71. Fifth end; 72. Sixth end; 8. First stiffening plate; 9. Second stiffening plate; 90. Hollowed-out groove; 901. Cylindrical stiffening plate; 902. Strip stiffening plate; 91. Front stiffening plate; 911. First extension stiffening plate; 92. Top stiffening plate; 93. Rear stiffening plate;

[0029] 01. First buffer; 02. Second buffer. Detailed Implementation

[0030] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but these are not intended to limit the scope of the present invention.

[0031] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0032] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to the present invention.

[0033] Combination Figures 1 to 9 As shown in the figure, the XYZ coordinate axes are provided for reference in the following description of the orientation of related components. The Z-axis represents the vertical direction of the vehicle. The positive direction of the Z-axis represents the top direction of the vehicle (i.e., above), and the negative direction of the Z-axis represents the bottom direction of the vehicle (i.e., below). The Y-axis represents the horizontal direction of the vehicle. The positive direction of the Y-axis represents the left side direction of the vehicle (i.e., left), and the negative direction of the Y-axis represents the right side direction of the vehicle (i.e., right). The X-axis represents the longitudinal direction of the vehicle. The positive direction of the X-axis represents the front direction of the vehicle (i.e., front), and the negative direction of the X-axis represents the rear direction of the vehicle (i.e., rear).

[0034] This utility model provides a seat back mounting structure, including a bracket 1, a pin 2, and a sleeve 3. The bracket 1 is provided with a limiting through hole 131. The first end 21 of the pin 2 is connected to the first seat back 100, and the sleeve 3 is connected to the second seat back 200. The second end 22 of the pin 2 is rotatably connected to the limiting through hole 131 and the inner cavity 31 of the sleeve 3.

[0035] Combination Figures 1 to 3 As shown, a limiting through hole 131 is provided on the bracket 1. The first end 21 of the pin 2 is connected to the first seat back 100 by means of welding, keying, screwing, etc. The sleeve 3 is connected to the second seat back 200 by means of welding, keying, screwing, etc. The second end 22 of the pin 2 is first inserted into the limiting through hole 131 and then inserted into the inner cavity 31 of the sleeve 3, so that the second end 22 of the pin 2 is rotatably connected to the limiting through hole 131 and the inner cavity 31.

[0036] In traditional technology, the bracket has an open-type pivot limiting hole (i.e., the pivot limiting hole is U-shaped). The pivot can be inserted into the pivot limiting hole through the opening, and then the cover plate is connected to the bracket by snap-fit, screw-fit, or other methods to limit the movement of the pivot. Combined with... Figure 2 As shown, in this embodiment, the limiting through hole 131 is directly opened on the bracket 1, and the second end 22 is limited along the Z-axis direction and the X-axis direction. This is equivalent to the cover plate and the bracket being integrally connected in the conventional technology to form the bracket 1 with the limiting through hole 131 in this embodiment. That is, the two components in the conventional technology are integrated into one component in this embodiment.

[0037] It is understood that the bracket 1 is usually installed on the seat crossbeam 500. The structure and material of the bracket 1 are not limited in the above embodiments. The specific structure and material of the bracket 1 can be designed as needed, such as cast aluminum, sheet metal welding, etc.

[0038] In this utility model, the seat back mounting structure has a limiting through hole 131 on the bracket 1. The second end 22 of the pin 2 is inserted into the limiting through hole 131 and the inner cavity 31 of the sleeve 3, allowing the pin 2 to rotate relative to the bracket 1 and the sleeve 3. This enables the angle adjustment function of the first seat back 100 and the second seat back 200, eliminating the assembly step of connecting the cover plate to the bracket in the traditional technology, thus improving the assembly efficiency of the seat back mounting structure. The limiting through hole 131 on the bracket 1 in this utility model limits the second end 22 of the pin 2, which is equivalent to connecting the cover plate to the bracket in the traditional technology. The bracket is integrated into the bracket 1 with limiting through hole 131 in this utility model, which makes the bracket 1 near the limiting through hole 131 in this utility model have higher structural strength, which is beneficial to improving the user experience of the first seat back 100 and the second seat back 200; the two components (i.e., cover plate and bracket) in the conventional technology are integrated into one component (i.e., bracket 1 with limiting through hole 131) in this utility model, which improves the integration of the seat back mounting structure in this utility model, and thus helps to improve production efficiency; compared with the conventional technology, this utility model reduces the number of components, which reduces the weight of the seat back mounting structure to a certain extent, which is beneficial to the overall weight control of the vehicle.

[0039] Furthermore, it also includes a first connecting plate 4 and a first connecting shaft 5. The first connecting plate 4 is connected to the inner plate 300 of the first wheel cover. The third end 51 of the first connecting shaft 5 is connected to the first connecting plate 4, and the fourth end 52 of the first connecting shaft 5 is connected to the first seat back 100. It also includes a second connecting plate 6 and a second connecting shaft 7. The second connecting plate 6 is connected to the inner plate 400 of the second wheel cover. The fifth end 71 of the second connecting shaft 7 is connected to the second connecting plate 6, and the sixth end 72 of the second connecting shaft 7 is connected to the second seat back 200.

[0040] Combination Figures 3 to 5 As shown, the first connecting plate 4 can be connected to the inner plate 300 of the first wheel cover by welding, screwing, etc. The third end 51 of the first connecting shaft 5 can be connected to the first connecting plate 4 by welding, riveting, snap-fitting, etc. The fourth end 52 of the first connecting shaft 5 is rotatably connected to the first seat back 100 (in this embodiment, the first seat back 100 is provided with a first mounting hole, and the fourth end 52 of the first connecting shaft 5 is inserted into the first mounting hole to achieve rotatable connection); the second connecting plate 6 can be connected to the inner plate 400 of the second wheel cover by welding, screwing, etc. The fifth end 71 of the second connecting shaft 7 can be connected to the second connecting plate 6 by welding, riveting, snap-fitting, etc. The sixth end 72 of the second connecting shaft 7 is rotatably connected to the second seat back 200 (in this embodiment, the second seat back 200 is provided with a second mounting hole, and the sixth end 72 of the second connecting shaft 7 is inserted into the first mounting hole to achieve rotatable connection).

[0041] Thus, the first seat back 100 is connected to the first wheel arch inner panel 300 by the first connecting plate 4 and the first connecting shaft 5, and the second seat back 200 is connected to the second wheel arch inner panel 400 by the second connecting plate 6 and the second connecting shaft 7, thereby further improving the connection stability between the first seat back 100 and the second seat back 200 and the vehicle body respectively.

[0042] For example, the assembly process of the seat back mounting structure is as follows: [Combining...] Figure 7 As shown, after the third end 51 of the first connecting shaft 5 is connected and fixed to the first connecting plate 4, it is inserted into the first mounting hole on the first seat back 100 through the fourth end 52; the first end 21 of the pin 2 is welded to the first seat back 100, and the second end 22 of the pin 2 is inserted into the limiting through hole 131 along the Y-axis to achieve a rotatable connection; the first seat back 100 falls in the opposite direction along the Z-axis so that the first connecting plate 4 can be screwed to the inner plate 300 of the first wheel cover; combined with Figure 8As shown, after the fifth end 71 of the second connecting shaft 7 is connected and fixed to the second connecting plate 6, it is inserted into the second mounting hole on the second seat back 200 through the sixth end 72; the sleeve 3 is welded to the second seat back 200, and the second seat back 200 moves along the Y-axis so that the sleeve 3 is sleeved on the second end 22 (i.e., the second end 22 is inserted into the inner cavity 31); the second seat back 200 falls in the opposite direction along the Z-axis so that the second connecting plate 6 can be screwed to the inner plate 400 of the second wheel cover.

[0043] Furthermore, the outer periphery of the pin 2 is provided with a first protrusion 23, which is used to abut and limit the bracket 1; the outer periphery of the sleeve 3 is provided with a second protrusion 32, which is used to abut and limit the bracket 1.

[0044] Combination Figure 1 and Figure 2 As shown, the outer periphery of the pin 2 is provided with a first protrusion 23. In this embodiment, the first protrusion 23 surrounds the pin 2 to form a ring shape. The outer diameter of the first protrusion 23 is larger than the diameter of the limiting through hole 131. The first protrusion 23 can abut against the positive side of the Y-axis of the bracket 1 to achieve the limiting function. The second protrusion 32 surrounds the sleeve 3 to form a ring shape. The outer diameter of the second protrusion 32 is larger than the diameter of the limiting through hole 131. The second protrusion 32 can abut against the opposite side of the Y-axis of the bracket 1 to achieve the limiting function.

[0045] It is understood that, in another embodiment, the pin 2 can also be located on the opposite side of the Y-axis of the bracket 1, the sleeve 3 can be located on the positive side of the Y-axis of the bracket 1, the first boss 23 can abut against the opposite side of the Y-axis of the bracket 1, and the second boss 32 can abut against the positive side of the Y-axis of the bracket 1. Furthermore, the specific shape and size of the first boss 23 and the second boss 32 can be designed as needed, as long as they can abut against both sides of the Y-axis of the bracket 1 respectively.

[0046] Thus, the first boss 23 achieves the lateral limitation between the pin 2 and the bracket 1 in the vehicle, and the second boss 32 achieves the lateral limitation between the sleeve 3 and the bracket 1 in the vehicle, ensuring that the first seat back 100 and the second seat back 200 are limited in the lateral direction of the vehicle.

[0047] Preferably, a first buffer 01 is arranged between the pin 2 and the bracket 1, and a second buffer 02 is arranged between the sleeve 3 and the bracket 1.

[0048] Combination Figure 6As shown, the first buffer 01 and the second buffer 02 can be made of foam. The first buffer 01 is sleeved on the first boss 23 of the pin 2, so that when the first boss 23 abuts against the bracket 1, the first buffer 01 is compressed, which plays a role in buffering and reducing noise. Similarly, the second buffer 02 is sleeved on the second boss 32 of the sleeve 3, so that when the second boss 32 abuts against the bracket 1, the second buffer 02 is compressed, which plays a role in buffering and reducing noise.

[0049] It is understood that the first buffer 01 and the second buffer 02 may also be made of other materials such as felt, and the positions of the first buffer 01 and the second buffer 02 may also be different from those described in the above embodiments, as long as the first buffer 01 is arranged between the bracket 1 and the pin 2 and the second buffer 02 is arranged between the bracket 1 and the sleeve 3.

[0050] Thus, the first buffer 01 and the second buffer 02 play a buffering and noise reduction role, preventing abnormal noises caused by impact or friction between the pin 2 and the bracket 1, and between the sleeve 3 and the bracket 1.

[0051] Furthermore, the bracket 1 includes a bracket main board 11, a bracket base plate 12, and a bracket top plate 13. The limiting through hole 131 is formed on the bracket top plate 13. The bracket top plate 13 is integrally connected to the bracket main board 11. The bracket base plate 12 is integrally connected to the bracket main board 11. The bracket base plate 12 extends in the left and right directions to protrude from the bracket main board 11.

[0052] Combination Figure 9 As shown, the bracket 1 consists of a main bracket 11, a base bracket 12, and a top bracket 13. The main bracket 11 is generally parallel to the ZX plane in the figure. The top bracket 13 is integrally connected to the positive Z-axis side of the main bracket 11, and the base bracket 12 is integrally connected to the negative Z-axis side of the main bracket 11. The base bracket 12 extends in the left-right direction (i.e., the positive and negative Y-axis directions) and protrudes from the main bracket 11 to facilitate connection with the seat crossbeam 500. A limiting through hole 131 is formed on the top bracket 13. The second end 22 of the pin 2 is inserted into the limiting through hole 131 to achieve a rotatable connection.

[0053] It is understood that the bracket 1 in this embodiment can be produced by means of aluminum casting or aluminum extrusion to achieve an integral connection between the corresponding parts, and the structural weight of the bracket 1 can be reduced by using aluminum. In actual use, other production processes and materials that meet the requirements of integral connection can also be selected as needed, which are not limited here.

[0054] Thus, the bracket 1 is formed by the bracket top plate 13, the bracket main plate 11 and the bracket bottom plate 12. Compared with the bracket formed by welding multiple parts in the traditional technology, the bracket 1 in this embodiment has a higher degree of integration, which is conducive to improving production efficiency, reducing the number of parts, and controlling weight. The integrated connection method has higher strength than welding, which improves the structural strength of the seat back mounting structure.

[0055] Furthermore, it also includes a first stiffening plate 8, which is disposed between the main support plate 11 and the base plate 12, and is disposed at the rear edge of the main support plate 11 and the rear edge of the base plate 12.

[0056] Combination Figure 2 and Figure 9 As shown, the first stiffener 8 is integrally connected between the main support plate 11 and the base plate 12. In this embodiment, there are two first stiffeners 8, which are located on the positive side of the Y-axis and the negative side of the Y-axis of the main support plate 11, respectively. The first stiffeners 8 are set at the rear edge of the main support plate 11 and the rear edge of the base plate 12, so that the base plate 12 can play a certain supporting and reinforcing role for the main support plate 11.

[0057] Thus, the first stiffener 8 reinforces the base plate 12 and the main plate 11 of the bracket, improving the structural strength of the bracket 1. At the same time, the integrated connection reduces the number of parts and improves the integration.

[0058] Furthermore, it also includes a second stiffener 9, which is disposed on the edge of the main support plate 11 and extends to the left and right to protrude from the main support plate 11. The second stiffener 9 is connected to the base plate 12 of the support and forms a hollowed-out groove 90 with a closed boundary.

[0059] Combination Figure 9 As shown, there are two second stiffeners 9, which are integrally connected to the positive Y-axis side and the negative Y-axis side of the main support plate 11, respectively, so that they extend and protrude from the main support plate 11 in the left and right directions (i.e., positive and negative Y-axis directions). The figure shows the second stiffener 9 on the negative Y-axis side. The second stiffener 9 is connected to the support base plate 12 to form the closed boundary shown by the dotted line in the figure. The hollow groove 90 is formed in the closed boundary.

[0060] Thus, the second stiffener 9 provides support and reinforcement for the main support plate 11 and the base plate 12, thereby improving the structural strength of the support 1.

[0061] Furthermore, at least one cylindrical rib 901 is provided in the hollowed-out groove 90, and at least two strip ribs 902 are provided around each cylindrical rib 901. The strip ribs 902 extend radially until they are connected to the second rib plate 9 and / or the support base plate 12.

[0062] For example, combined Figure 9 As shown, two cylindrical ribs 901 are integrally provided in the hollowed-out groove 90. The cylindrical rib 901 near the positive Z-axis is surrounded by six strip ribs 902. The strip ribs 902 extend from the cylindrical rib 901 away from the cylindrical rib 901 to form a radial structure. The strip ribs 902 extend to be integrally connected with the second rib plate 9. The cylindrical rib 901 near the opposite Z-axis is surrounded by six strip ribs 902. The strip ribs 902 extend from the cylindrical rib 901 away from the cylindrical rib 901 to form a radial structure. The strip ribs 902 extend to be integrally connected with the second rib plate 9. One strip rib 902 extends to the junction of the second rib plate 9 and the support base plate 12, thus being integrally connected with the second rib plate 9 and the support base plate 12. The other strip rib 902 extends to be integrally connected with the support base plate 12.

[0063] In this way, the cylindrical ribs 901 and the strip ribs 902 form a grid of multiple reinforcing ribs in the hollowed-out groove 90, which allows the force to be transmitted along the strip ribs 902, the cylindrical ribs 901 and the second rib plate 9, thereby providing support and reinforcement for the main support plate 11 and the base plate 12 of the support. The hollowed-out grid design ensures that the weight of the support 1 will not increase too much, which is beneficial to the weight control of the seat back installation structure.

[0064] In particular, when two or more cylindrical ribs 901 are provided in the hollowed-out groove 90, for two adjacent cylindrical ribs 901, at least one strip rib 902 on one cylindrical rib 901 is integrally connected with at least one strip rib 902 on the other cylindrical rib 901.

[0065] Combination Figure 9 As shown, a strip rib 902 extending in the opposite direction of the Z-axis is connected to the cylindrical rib 901 near the positive direction of the Z-axis, and a strip rib 902 extending in the positive direction of the Z-axis is connected to the cylindrical rib 901 near the opposite direction of the Z-axis. The two strip ribs 902 are connected as one unit, thereby playing a certain role in strengthening and reinforcing the two cylindrical ribs 901.

[0066] Furthermore, the second stiffener 9 includes a front stiffener 91, an upper stiffener 92, and a rear stiffener 93 that are connected to each other. The middle part of the front stiffener 91 is recessed to the rear to form a C-shaped structure, and the rear stiffener 93 is arranged perpendicular to the upper side wall of the seat crossbeam 500.

[0067] Combination Figure 9 As shown, the second stiffener 9 is composed of a front stiffener 91, an upper stiffener 92, and a rear stiffener 93 connected together. The upper stiffener 92 is located at the edge of the main support plate 11 along the positive Z-axis, and its design can be based on the specific shape of the main support plate 11 along the positive Z-axis edge. The front stiffener 91 is located at the edge of the main support plate 11 along the positive X-axis edge, with its middle part recessed towards the rear (i.e., the middle part of the front stiffener 91 is recessed towards the opposite X-axis edge, while the two ends of the front stiffener 91 in the positive and negative Z-axis directions are set close to the positive X-axis), forming a C-shaped structure. The rear stiffener 93 is set perpendicular to the upper side wall of the seat crossbeam 500 (i.e., the side wall on the positive Z-axis side).

[0068] Thus, through the C-shaped structure design of the front stiffener 91 and the design of the rear stiffener 93 perpendicular to the upper side wall of the seat crossbeam 500, the force can be better transmitted, and the weight of the main support plate 11 can be reduced to a certain extent through the middle concave of the C-shaped structure. The front stiffener 91, the upper stiffener 92 and the rear stiffener 93 make the main support plate 11 have higher structural strength and rigidity.

[0069] When the first stiffener 8 and the second stiffener 9 are integrally connected to the main board 11, the first stiffener 8 is located at the edge of the main board 11 on the opposite side of the X-axis, and the rear stiffener 93 of the second stiffener 9 is also located at the edge of the main board 11 on the opposite side of the X-axis. In this embodiment, the first stiffener 8 is closer to the X-axis direction, and both the first stiffener 8 and the rear stiffener 93 can be integrally connected using cast aluminum. Thus, the first stiffener 8 strengthens the main board 11 in the Y-direction, and the rear stiffener 93 strengthens the main board 11 in the Z-direction.

[0070] Furthermore, the support base plate 12 includes a first base plate 121 and a second base plate 122 integrally connected to each other. The first base plate 121 and the second base plate 122 are set at a first preset angle. The first base plate 121 is installed on the front side wall of the seat beam 500, and the second base plate 122 is installed on the upper side wall of the seat beam 500.

[0071] Combination Figure 9 As shown, the first base plate 121 and the second base plate 122 can be made of cast aluminum. The first base plate 121 and the second base plate 122 are integrally connected by casting process. The first base plate 121 and the second base plate 122 form a first preset angle θ. In this embodiment, θ = 100° to 130°. This first preset angle θ makes the first base plate 121 and the second base plate 122 respectively installed on the front side wall and the upper side wall of the seat beam 500 (that is, the side wall of the seat beam 500 in the positive direction of the X axis and the side wall of the positive direction of the Z axis).

[0072] Thus, the first preset angle allows the first base plate 121 and the second base plate 122 to be respectively installed on the front side wall and the upper side wall of the seat beam 500, thereby improving the stability of the connection between the bracket base plate 12 and the seat beam 500. Furthermore, the integrated design avoids increasing the number of parts and improves the integration level of the pivot bracket.

[0073] Preferably, the lower end of the front stiffener plate 91 is provided with a first extension rib 911, the first extension rib 911 extends to the front side of the first base plate 121, and the first extension rib 911 is integrally connected with the first base plate 121.

[0074] Combination Figure 9 As shown, the lower end of the front stiffener plate 91 is provided with a first extension rib 911. The first extension rib 911 starts from the lower end of the front stiffener plate 91 and extends along the surface of the first base plate 121. The first base plate 121 and the first extension rib 911 are integrally connected.

[0075] Thus, the first base plate 121 is connected to the main support plate 11 through the first extension rib 911 and the front rib plate 91, which improves the strength of the first base plate 121 and thus helps to improve the structural strength and rigidity of the seat pivot bracket.

[0076] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0077] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0078] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A seat back mounting structure, characterized in that, The device includes a bracket, a pin, and a sleeve. The bracket has a limiting through hole. The first end of the pin is connected to the first seat back, the sleeve is connected to the second seat back, and the second end of the pin is rotatably connected to the limiting through hole and the inner cavity of the sleeve.

2. The seat back mounting structure according to claim 1, characterized in that, It also includes a first connecting plate and a first connecting shaft, the first connecting plate being connected to the inner plate of the first wheel cover, the third end of the first connecting shaft being connected to the first connecting plate, and the fourth end of the first connecting shaft being connected to the first seat back; it also includes a second connecting plate and a second connecting shaft, the second connecting plate being connected to the inner plate of the second wheel cover, the fifth end of the second connecting shaft being connected to the second connecting plate, and the sixth end of the second connecting shaft being connected to the second seat back.

3. The seat back mounting structure according to claim 1, characterized in that, The outer periphery of the pin is provided with a first protrusion, which is used to abut and limit the position of the bracket; the outer periphery of the sleeve is provided with a second protrusion, which is used to abut and limit the position of the bracket.

4. The seat back mounting structure according to claim 1, characterized in that, A first buffer is arranged between the pin and the bracket, and a second buffer is arranged between the sleeve and the bracket.

5. The seat back mounting structure according to claim 1, characterized in that, The bracket includes a bracket main board, a bracket base plate, and a bracket top plate. The limiting through hole is formed on the bracket top plate. The bracket top plate is integrally connected to the bracket main board. The bracket base plate is integrally connected to the bracket main board. The bracket base plate extends to the left and right to protrude from the bracket main board.

6. The seat back mounting structure according to claim 5, characterized in that, It also includes a first stiffening plate, which is disposed between the main support plate and the base plate of the support, and is disposed at the rear edge of the main support plate and the rear edge of the base plate of the support.

7. The seat back mounting structure according to claim 5, characterized in that, It also includes a second stiffener, which is disposed on the edge of the main support plate and extends to the left and right to protrude from the main support plate. The second stiffener is connected to the base plate of the support and forms a hollowed-out groove with a closed boundary.

8. The seat back mounting structure according to claim 7, characterized in that, The hollowed-out groove is provided with at least one cylindrical rib, and corresponding to each cylindrical rib, at least two strip ribs are provided around it. The strip ribs extend radially until they are connected to the second rib plate and / or the support base plate.

9. The seat back mounting structure according to claim 7, characterized in that, The second stiffener includes a front stiffener, an upper stiffener, and a rear stiffener that are connected to each other. The middle part of the front stiffener is recessed to the rear to form a C-shaped structure, and the rear stiffener is set perpendicular to the upper side wall of the seat crossbeam.

10. The seat back mounting structure according to claim 9, characterized in that, The support base plate includes a first base plate and a second base plate integrally connected to each other. The first base plate and the second base plate are set at a first preset angle. The first base plate is installed on the front side wall of the seat crossbeam, and the second base plate is installed on the upper side wall of the seat crossbeam. The lower end of the front stiffener plate is provided with a first extension rib. The first extension rib extends to the front side of the first base plate and is integrally connected to the first base plate.

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