Automobile seat structure

Abstract

According to the automobile seat structure provided by the invention, by improving the automobile seat structure, the automobile seat structure is simplified and the reliability and durability of a system are improved on the basis that the backrest and the seat bottom plate are linked to adjust the angle of the backrest and the backrest can be folded. The automobile seat structure comprises a backrest framework and a seat bottom plate hinged to the backrest framework. The seat bottom plate can move in the horizontal direction relative to an automobile body so as to drive the backrest framework to move up and down in the height direction. The automobile seat structure further comprises a guide support fixedly connected to the automobile body and a locking piece fixedly arranged on the backrest framework, the guide support is provided with a lock hole, the lock hole obliquely extends towards the direction close to the seat bottom plate from high to low in the height direction, and the backrest framework is provided with a locking position and a disengaging position. At the locking position, the locking piece is inserted into the lock hole and can slide along the lock hole under the driving of the seat bottom plate; and at the release position, the locking piece is separated from the guide bracket, and the backrest framework can turn over towards the seat bottom plate.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, in particular to an automobile seat structure. Background Art

[0002] In the automotive industry, the design and manufacture of car seats have always been committed to improving the riding comfort and convenience of passengers. Traditional car seat design usually includes a seat bottom and an adjustable backrest, where the seat bottom allows passengers to move forward and backward in the car to adapt to different driving or riding needs. At the same time, the backrest can not only adjust the tilt angle according to the passenger's personal preference to provide the best back support, but also has a folding function, which can fold the backrest to a position parallel to the seat bottom, making it easier for passengers to enter and exit the vehicle or expand the storage space in the car.

[0003] However, existing linkage seat designs are often complex in structure, involving multiple precision mechanical components and electronic sensors, which not only increases the complexity of the structure, but also may increase the difficulty of maintenance due to the precise matching requirements between components, thereby reducing the reliability and durability of the system. Summary of the invention

[0004] The purpose of the invention is to provide a car seat structure. By improving the car seat structure, the backrest and the seat bottom plate are linked to adjust the backrest angle and the foldable function of the backrest is realized, the car seat structure is simplified, and the reliability and durability of the system are improved.

[0005] To achieve the above object, the present invention provides a car seat structure, comprising a backrest frame and a seat bottom plate hinged to the backrest frame, wherein the seat bottom plate can move horizontally relative to the vehicle body to drive the backrest frame to move up and down in the height direction;

[0006] The automobile seat structure also includes a guide bracket fixedly connected to the vehicle body and a locking member fixedly arranged on the backrest frame, the guide bracket is provided with a locking hole, the locking hole extends obliquely from high to low in the height direction toward the direction close to the seat bottom plate, and the backrest frame has a locking position and a disengaging position;

[0007] In the locking position, the locking member is inserted into the locking hole and can slide along the locking hole driven by the seat bottom plate; in the disengaging position, the locking member is separated from the guide bracket, and the backrest frame can be flipped toward the seat bottom plate.

[0008] By adopting the technical solution in the present application, the backrest and the seat bottom are linked to adjust the backrest angle and the foldable function of the backrest is realized, which significantly simplifies the car seat structure and improves the reliability and durability of the system.

[0009] Optionally, the locking member has a locking pin and a driving member, and under the drive of the driving member, the locking pin moves in a direction perpendicular to the guide bracket.

[0010] Optionally, two guide brackets are provided in the width direction of the vehicle, and the backrest frame is located between the two guide brackets; the locking pin can pass through the guide bracket to its outside, and can form a limiting fit with the guide bracket in a direction perpendicular to the guide bracket.

[0011] By providing two guide brackets, the backrest frame can be guided on both sides of the backrest frame, thereby improving the reliability of the seat structure. At the same time, the locking pin can pass through the guide bracket in the locking position and can form a limited fit in the direction perpendicular to the guide bracket, so that the backrest frame will not be disengaged due to passenger's misoperation during the process of forming a linkage with the seat base.

[0012] Optionally, the part located on the outside of the guide bracket is defined as a limit end; in the extension direction of the lock hole, there are a first hole segment and a second hole segment connected in sequence, and the limit end is projected in a direction perpendicular to the guide bracket to form a first projection, the first projection exceeds the second projection of the first hole segment, and the first projection is located within the third projection of the second hole segment, or coincides with the third projection.

[0013] Therefore, during the locking process, the limit end can pass through the guide bracket through the second hole section. When the seat bottom plate moves horizontally, when the locking pin slides into the first hole section, the limit end can form a limit fit with the guide bracket. In this way, the locking pin can only be plugged into and disengaged from the guide bracket at the position of the second hole section, further improving the reliability of the seat structure.

[0014] Optionally, in the height direction, the second hole section is located at the highest point of the lock hole. By setting the position where the lock pin is plugged in and out of the guide bracket at the highest point of the second hole section, the space occupied by the seat in the horizontal direction after being folded can be reduced.

[0015] Optionally, the locking member further comprises a housing and an elastic reset member disposed in the housing, one end of the elastic reset member abuts against the housing, and the other end abuts against the locking pin. The elastic reset member can be provided to drive the locking member to automatically return to its original position, thereby simplifying the structure of the locking member.

[0016] Optionally, a portion of the locking pin located in the housing is provided with a slot, and the slot is recessed radially inward from the outer wall of the locking pin to form two oppositely arranged slot side walls in the axial direction;

[0017] The inner wall of the shell is also provided with a locking protrusion, which protrudes radially inwards, is located in the locking groove, and forms an axial stop with the side wall of the groove.

[0018] By arranging the locking groove to match the locking protrusion, the axial movement distance of the locking pin can be limited.

[0019] Optionally, the driving member is a cable with one end connected to the locking pin, and the other end of the cable is arranged beside the seat bottom plate. Using the cable to drive the locking pin to move can replace the traditional electric drive structure, improve reliability and reduce costs; arranging the other end of the cable beside the seat bottom plate can facilitate passenger operation.

[0020] Optionally, in the horizontal direction, an adapter is provided on the front surface of the backrest frame close to the seat bottom plate, and the seat bottom plate includes a bottom plate body and a bending section arranged at an angle to the bottom plate body; the bending end is fixedly connected to a connecting member extending in the same direction as the bending end, and the connecting member and the adapter are hinged via a rotating shaft.

[0021] Optionally, the bending section and the base plate body are an integrated structure. By integrating the bending section with the base plate body and hingedly connecting the bending section with the backrest frame, the structural strength of the seat base plate is improved and the seat structure is simplified.

[0022] Optionally, the seat pan is hinged to the backrest frame via a rotating shaft, and the rotating shaft extends along the width direction of the vehicle. In this way, the backrest frame can be rotated relative to the seat pan around the rotating shaft.

[0023] Optionally, the seat bottom plate includes two bottom plate longitudinal beams extending in the vehicle length direction, and the two bottom plate longitudinal beams are arranged opposite to each other in the vehicle width direction; the backrest frame includes two vertical beams extending in the vehicle height direction, and the two vertical beams are arranged opposite to each other in the vehicle width direction; the longitudinal beams located on the same side are hinged to the vertical beams. In this way, the backrest frame and the seat bottom plate have two hinged positions, which improves the reliability of the seat structure.

[0024] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0026] Figure 1 is a front side view of a seat structure according to an embodiment of the present invention;

[0027] Figure 2 yes Figure 1 Axonometric view of

[0028] Figure 3 yes Figure 1 An enlarged schematic diagram of a partial structure showing a guide bracket portion;

[0029] Figure 4 yes Figure 3 A front view of

[0030] Figure 5 yes Figure 1 An enlarged schematic diagram of a part of the structure showing the hinged connection between the backrest frame and the seat bottom plate;

[0031] Figure 6 is a structural schematic diagram of a locking member of a seat structure in an embodiment of the present invention in a locking position;

[0032] Figure 7 1 is a schematic structural diagram of a seat structure in which a locking member is in a disengaged position in an embodiment of the present invention.

[0033] Reference numerals:

[0034] 1-backrest frame; 11-vertical beam; 12-backrest crossbeam; 2-seat bottom plate; 21-bottom plate longitudinal beam; 21a-first beam section; 21b-second beam section; 22-bottom plate crossbeam; 3-guide bracket; 31-locking hole; 31a-first hole section; 31b-second hole section; 4-locking member; 41-locking pin; 41a-pin body; 41b-card slot; 41b-1-first annular boss; 41b-2-second annular boss; 41c-limiting end;

[0035] 42-housing; 42a-clamping protrusion; 43-elastic reset member; 44-pull cable; 51-adapter; 52-connector; 52a-clamping arm; 52b-connecting wall; 53-rotating shaft; 61-support frame; 62-slide rail. DETAILED DESCRIPTION

[0036] The present invention provides a car seat structure, which simplifies the car seat structure and improves the reliability and durability of the system by improving the car seat structure to realize the linkage between the backrest and the seat bottom plate to adjust the backrest angle and the foldable function of the backrest.

[0037] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] Relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0039] Please refer to Figures 1 to 7 , Figure 1 is a front side view of a seat structure according to an embodiment of the present invention; Figure 2 yes Figure 1 Axonometric view of Figure 3 yes Figure 1 An enlarged schematic diagram of a partial structure showing a guide bracket 3 portion; Figure 4 yes Figure 3 A front view of Figure 5 yes Figure 1 An enlarged schematic diagram of a partial structure showing a portion where the backrest frame 1 is hinged to the seat bottom plate 2; Figure 6 is a structural schematic diagram of a locking member 4 of a seat structure in an embodiment of the present invention in a locked position; Figure 7 1 is a schematic structural diagram of a seat structure in which the locking member 4 is in a disengaged position in an embodiment of the present invention.

[0040] Combination Figure 1 and Figure 2 As shown, the present invention provides a car seat structure, including a backrest frame 1 and a seat bottom plate 2 hinged to the backrest frame 1, wherein the seat bottom plate 2 can move forward and backward along the length direction of the vehicle in a horizontal plane relative to the vehicle body to drive the backrest frame 1 to move up and down along the height direction of the vehicle.

[0041] In this embodiment, the seat bottom plate 2 includes two bottom plate longitudinal beams 21 arranged opposite to each other in the width direction of the vehicle, the bottom plate longitudinal beam 21 extends along the length direction of the vehicle, one end of which is connected to a bottom plate cross beam 22, the end connected to the bottom plate cross beam 22 is the end away from the backrest frame 1, and the other end is connected to the backrest frame 1 and is hinged to the backrest frame 1. The backrest frame 1 includes two vertical beams 11 extending in the height direction, the two vertical beams 11 are arranged opposite to each other in the width direction of the vehicle, and the two vertical beams 11 are hinged to the two bottom plate longitudinal beams 21 in a one-to-one correspondence.

[0042] In a specific embodiment, the floor longitudinal beam 21 includes a first beam section 21a and a second beam section 21b. The first beam section 21a extends approximately in the horizontal direction, where the meaning of "approximately" includes the situation of extending strictly in the horizontal direction and forming a certain angle with the horizontal direction. The second beam section 21b is set at an angle to the first beam section 21a, and the second beam section 21b extends approximately in the vertical direction. The meaning of "approximately" here refers to the above explanation. The first beam section 21a and the second beam section 21b are an integrally formed structure, and the portion where the first beam section 21a and the second beam section 21b are connected forms an arc transition.

[0043] In the embodiment shown in the figure, a support frame 61 is provided at the bottom of the first beam section 21a, and the support frame 61 is slidably connected to a slide rail 62 provided on the vehicle body floor. Under the action of external force, the support frame 61 can move forward and backward along the slide rail 62.

[0044] like Figure 1 In the example shown, the height of the end where the first beam section 21a and the second beam section 21b meet from the ground is lower than the end where the first beam section 21a is connected to the bottom cross beam 22. In this way, the first beam section 21a is generally higher in the front and lower in the back, and the extension line of the first beam can intersect with the plane where the slide rail 62 is located.

[0045] The automobile seat structure also includes a guide bracket 3 fixedly connected to the vehicle body, the guide bracket 3 is arranged on the side of the backrest frame 1, and is arranged opposite to the backrest frame 1 in the width direction of the vehicle. The automobile seat structure also includes a locking member 4 fixed to the backrest frame 1, and the guide bracket 3 is provided with a locking hole 31, and the locking hole 31 penetrates the guide bracket 3 along the thickness direction of the guide bracket 3. The locking hole 31 extends obliquely from high to low in the height direction toward the direction close to the seat bottom plate 2; the extension direction of the locking hole 31 is adapted to the adjustable angle range of the backrest frame 1.

[0046] The backrest frame 1 has a locking position and a disengaging position; in the locking position, the locking member 4 is inserted into the locking hole 31 and can slide along the locking hole 31 driven by the seat bottom plate 2; in the disengaging position, the locking member 4 is separated from the guide bracket 3, and the backrest frame 1 can be flipped toward the seat bottom plate 2.

[0047] In the actual process of adjusting the backrest frame 1, the backrest frame 1 can be disengaged from the vehicle body by controlling the locking member 4 to disengage from the guide bracket 3, and the external force drives the backrest frame 1 to flip relative to the second beam section 21b toward the side close to the first beam section 21a to achieve the folding of the backrest frame 1. The backrest frame 1 can be kept in the folded state under the action of gravity; otherwise, the backrest frame 1 is rotated in a direction away from the seat bottom plate 2 to reset the backrest frame 1.

[0048] In the locked position, the first beam section 21a is driven to move forward to drive the backrest frame 1 to slide down along the locking hole 31, thereby increasing the angle between the first beam section 21a and the backrest frame 1; conversely, the first beam section 21a is driven to move backward to drive the backrest frame 1 to move upward, thereby reducing the angle between the first beam section 21a and the backrest frame 1.

[0049] By adopting the technical solution in the present application, the complex electronic control sensor system of the traditional seat structure is replaced, and the backrest angle adjustment and the folding function of the backrest are realized by linkage between the backrest and the seat bottom plate 2, which significantly simplifies the car seat structure and improves the reliability and durability of the system.

[0050] Continue to see Figure 1 , Figure 2 as well as Figure 6 , Figure 7As an optional embodiment, two guide brackets 3 are provided in the width direction of the vehicle, and the backrest frame 1 is located between the two guide brackets 3; the locking pin 41 can pass through the guide bracket 3 to the outside thereof, and can form a limited fit with the guide bracket 3 in a direction perpendicular to the guide bracket 3. The "outside" refers to the side of the two backrest frames 1 away from each other.

[0051] By providing two guide brackets 3, the backrest frame 1 can be guided on both sides of the backrest frame 1, thereby improving the reliability of the seat structure. At the same time, the locking pin 41 can pass through the guide bracket 3 in the locking position and can form a limited fit in a direction perpendicular to the guide bracket 3, so that the backrest frame 1 will not be disengaged due to the passenger's misoperation during the process of forming a linkage with the seat base.

[0052] Specifically, the locking member 4 includes a locking pin 41 plugged into the locking hole 31, and the locking pin 41 includes a pin body 41a and a limiting end 41c disposed on the pin body 41a, and the radial dimension of the limiting end 41c is greater than the radial dimension of the pin body 41a. The portion of the locking pin 41 located outside the guide bracket 3 is the limiting end 41c. The limiting end 41c can pass through the guide bracket 3 and abut against the surface of the guide bracket 3 on the outside of the guide bracket 3 to form an axial stop.

[0053] like Figure 4 In the example shown, the limit end 41c is projected in a direction perpendicular to the guide bracket 3 to form a first projection, the first projection exceeds the second projection formed by the projection of the first hole segment 31a, and the first projection is located within the third projection formed by the projection of the second hole segment 31b, or coincides with the third projection.

[0054] Specifically, the locking hole 31 has a first hole section 31a and a second hole section 31b connected in sequence in the extending direction. The first hole section 31a is a waist-shaped locking hole 31 of equal diameter, and its radial dimension is smaller than the radial dimension of the pin body 41a. The second hole section 31b is a circular locking hole 31, and its radial dimension is larger than or equal to the radial dimension of the limiting end 41c. The second hole section 31b can be located at both ends of the first hole section 31a, or in the middle of the first hole section 31a.

[0055] Continue to see Figure 6 and Figure 7In an optional embodiment, the pin body 41a is further provided with a first annular boss 41b-1, which protrudes radially from the pin body 41a and is axially spaced from the limiting end 41c. When the lock pin 41 is inserted into the lock hole 31, the limiting end 41c contacts or has a clearance fit with the outer surface of the guide bracket 3, and the first annular boss 41b-1 contacts or has a clearance fit with the inner surface of the guide bracket 3. The "outside" and "inside" are defined relative to the two guide brackets 3. In the width direction of the vehicle, the surfaces of the two guide brackets 3 that are close to each other are their inner surfaces, and vice versa.

[0056] Therefore, during the locking process, the limit end 41c can pass through the guide bracket 3 through the second hole section 31b. When the seat bottom plate 2 moves horizontally, when the locking pin 41 slides into the first hole section 31a, the limit end 41c can form a limit fit with the guide bracket 3. In this way, the locking pin 41 can only be plugged in and disconnected from the guide bracket 3 at the position where the second hole section 31b is located, further improving the reliability of the seat structure.

[0057] In the example shown in FIG. 4 , in the height direction, the second hole section 31b is located at the highest point of the lock hole 31. By setting the position where the lock pin 41 is plugged and disengaged from the guide bracket 3 at the highest point of the second hole section 31b, the space occupied in the horizontal direction after the seat is folded can be reduced.

[0058] This is because, when the first beam section 21a moves backward to the side closer to the backrest frame 1, the locking pin 41 moves to the highest point of the locking hole 31 driven by the backrest frame 1. The second hole section 31b is set at the highest point of the locking hole 31. At this time, the seat base is located at the position closest to the backrest frame 1, thereby reducing the space occupied by the seat base in the horizontal direction. After the backrest frame 1 is folded, the space occupied by the entire seat structure in the horizontal direction is also reduced.

[0059] The following is an example of the specific articulation method of the second beam section 21b and the vertical beam 11 in this application. Figure 1-Figure 5 Understand. Figure 5As shown, in the horizontal direction, an adapter 51 is provided on the front surface of the backrest frame 1 close to the seat bottom plate 2, the vertical beam 11 is a square steel structure, and the surface provided with the adapter 51 is located on the side wall of the square steel facing the seat bottom plate 2; the second beam section 21b is fixedly connected with a connecting member 52 extending in the same direction as it; the connecting member 52 has two clamping arms 52a arranged opposite to each other along the vehicle width direction and a connecting wall 52b connected between the two clamping arms 52a, the second beam section 21b is a square steel, the connecting wall 52b and the two clamping arms 52a are welded to the side of the second beam section 21b away from the vertical beam 11, and at the same time, the connecting wall 52b and the clamping arms 52a continue to extend along the extension direction of the second beam section 21b to the end beyond the second beam section 21b. The part beyond the end of the second beam section 21b protrudes toward the side close to the vertical beam 11 to form a space, and the space is used to accommodate the adapter 51. The connecting member 52 and the adapter member 51 are hingedly connected via a rotating shaft 53 , and the rotating shaft 53 extends along the width direction of the vehicle.

[0060] In such Figure 1 and Figure 5 In the example shown, the backrest frame 1 also includes a backrest crossbeam 12, and the two ends of the backrest crossbeam 12 are abutted and connected to the vertical beam 11 on the corresponding side. Specifically, the lower end of the vertical beam 11 is pressed against the upper end surface 12a of the backrest crossbeam 12 and is welded to the backrest crossbeam 12. The front end surface 11a of the vertical beam 11 and the front end surface 12a of the backrest crossbeam 12 are located in the same plane and together constitute the above-mentioned front surface; that is, part of the adapter 51 is fixedly connected to part of the front end surface 11a of the vertical beam 11, and the other part of the adapter 51 is fixedly connected to part of the front end surface 12b of the backrest crossbeam 12. In this embodiment, the "front", "upper" and "lower" are defined with reference to the seat bottom plate 2 when the vehicle is in normal use. The side of the backrest frame 1 close to the seat bottom plate 2 in the length direction of the vehicle is the "front"; in the height direction, the side close to the seat bottom plate 2 is the "lower" and vice versa.

[0061] The specific structure of the locking member 4 in the present application is described below by way of example.

[0062] Continue to refer to Figure 6 and Figure 7In some specific embodiments, the locking member 4 has a locking pin 41, and under the drive of an external force, the locking pin 41 moves in a direction perpendicular to the guide bracket 3. For example, the locking member 4 may include a driving member, and the driving member may be an electric drive such as a motor, or may be mechanically driven. In the example shown in the figure, the driving member is a cable 44 connected to the locking pin 41 at one end, and the other end of the cable 44 is arranged on the side of the seat bottom plate 2. Driving the locking pin 41 to move by the cable 44 can replace the traditional electric drive structure, improve reliability, and reduce costs; the other end of the cable 44 is arranged on the side of the seat bottom plate 2, and the locking pin 41 is driven by pulling the cable 44, which can facilitate passenger operation. In addition to the cable 44, the driving member can also be other mechanical drive structures, and those skilled in the art can choose by themselves.

[0063] Optionally, the locking member 4 further includes a housing 42 and an elastic reset member 43 disposed in the housing 42, one end of the elastic reset member 43 abuts against the housing 42, and the other end abuts against the locking pin 41. The locking pin 41 can be retracted into the housing 42 under the action of an external force, and during the retraction process of the locking pin 41, the elastic reset member 43 is driven to deform to accumulate elastic force. After the external force applied to the locking pin 41 disappears, the locking pin 41 extends out of the housing 42 under the action of the elastic reset member 43.

[0064] By providing the elastic reset member 43 , the locking member 4 can be driven to return to its original position automatically, thereby simplifying the structure of the locking member 4 .

[0065] Optionally, the portion of the lock pin 41 located in the housing 42 is provided with a slot 41b, which is recessed radially inward from the outer wall of the lock pin 41 to form two opposite slot side walls in the axial direction; the inner wall of the housing 42 is further provided with a protrusion 42a, which protrudes radially inward, is located in the slot 41b, and forms an axial stop with the slot side wall. By providing the slot 41b to match the protrusion 42a, the axial movement distance of the lock pin 41 can be limited.

[0066] In the example shown in the figure, the surface of the first annular boss 41b-1 opposite to the limiting end 41c constitutes the side groove wall on one side of the slot 41b, and the pin body 41a is also provided with a second annular boss 41b-2, which is axially spaced from the first annular boss 41b-1; the second annular boss 41b-2 radially protrudes outward from the pin body 41a, and the pin body 41a, the first annular boss 41b-1 and the second annular boss 41b-2 surround the aforementioned slot 41b, and the surface of the second annular boss 41b-2 close to the first annular boss 41b-1 constitutes the other side wall of the slot 41b. The elastic reset member 43 is sleeved on the pin body 41a, one end of which abuts against the surface of the second annular boss 41b-2 away from the first annular boss 41b-1, and the other end abuts against the inner end wall of the housing 42. In the radial direction, the first annular boss 41b-1 and the second annular boss 41b-2 are consistent with the radial dimensions of the limit end 41c, and the outer walls of the first annular boss 41b-1, the second annular boss 41b-2 and the limit end 41c are all clearance-matched with the inner wall of the outer shell 42, so that during the axial movement of the locking pin 41, the outer shell 42 plays a guiding role for the locking pin 41.

[0067] Compared with the prior art, the advantages of this application are:

[0068] First, the seat bottom plate 2 and the backrest frame 1 are linked to each other so that the backrest frame 1 can be folded and laid flat. This structure is simple, light and noiseless.

[0069] Second, the latch lock of the backrest frame 1 is used as the locking member 4, which slides in the lock hole 31 of the guide bracket 3 to realize the linkage function of the seat bottom plate 2 and the backrest frame 1. The lock hole 31 is plastic coated, and this structure has low cost and no abnormal movement sound.

[0070] Third, by adopting the locking member 4 structure, after unlocking by the cable 44, the backrest frame 1 can be released from the lock hole 31, so that the backrest can be folded and laid flat on the seat bottom plate 2. This structure is simple and easy to operate.

[0071] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A car seat structure, characterized in that: It comprises a backrest frame (1) and a seat bottom plate (2) hinged to the backrest frame (1), wherein the seat bottom plate (2) can move forward and backward along the length direction of the vehicle in a horizontal plane relative to the vehicle body; The automobile seat structure further comprises a guide bracket (3) fixedly connected to the vehicle body and a locking member (4) fixedly arranged on the backrest frame (1); the guide bracket (3) is provided with a locking hole (31); the locking hole (31) extends obliquely from high to low in the height direction of the vehicle toward a direction close to the seat bottom plate (2); and the backrest frame (1) has a locking position and a disengaging position; In the locked position, the locking member (4) is inserted into the locking hole (31) and can slide along the locking hole (31) driven by the seat bottom plate (2); in the disengaged position, the locking member (4) is separated from the guide bracket (3), and the backrest frame (1) can be flipped in a direction close to or away from the seat bottom plate (2).

2. The vehicle seat structure according to claim 1, characterized in that: The guide bracket (3) is arranged beside the backrest frame (1), and the locking member (4) has a locking pin (41), and the locking pin (41) can move in a direction perpendicular to the guide bracket (3).

3. The vehicle seat structure according to claim 2, characterized in that: Two guide brackets (3) are arranged in the width direction of the vehicle, and the backrest frame (1) is located between the two guide brackets (3).

4. The vehicle seat structure according to claim 2, characterized in that: The locking pin (41) can pass through the guide bracket (3) to the outside thereof, and can form a limiting fit with the guide bracket (3) in a direction perpendicular to the guide bracket (3).

5. The vehicle seat structure according to claim 3, characterized in that: The portion located outside the guide bracket (3) is defined as a limiting end (41c); a first hole segment (31a) and a second hole segment (31b) are sequentially connected in the extending direction of the lock hole (31); the limiting end (41c) is projected in a direction perpendicular to the guide bracket (3) to form a first projection; the first projection exceeds a second projection formed by projecting the first hole segment (31a); the first projection is located within a third projection formed by projecting the second hole segment (31b), or coincides with the third projection.

6. The vehicle seat structure according to claim 5, characterized in that: It also includes a cable (44), one end of the cable (44) being connected to an end of the locking pin (41) opposite to the limiting end (41c), and the other end of the cable (44) being arranged beside the seat bottom plate (2).

7. The vehicle seat structure according to any one of claims 2 to 6, characterized in that: The locking member (4) further comprises a housing (42) and an elastic return member (43) disposed in the housing (42); one end of the elastic return member (43) abuts against the housing (42), and the other end abuts against the locking pin (41).

8. The vehicle seat structure according to claim 7, characterized in that: The locking pin (41) is provided with a clamping groove (41b), wherein the clamping groove (41b) is recessed radially inward from the outer wall of the locking pin (41) to form two groove side walls that are arranged opposite to each other in the axial direction; The inner wall of the housing (42) is further provided with a locking protrusion (42a), the locking protrusion (42a) protruding radially inwards, the locking protrusion (42a) being located in the locking groove (41b) and being able to form an axial stop with the groove side wall.

9. The vehicle seat structure according to any one of claims 2 to 6, characterized in that: The seat bottom plate (2) and the backrest frame (1) are hingedly connected via a rotating shaft (53), and the rotating shaft (53) extends in the width direction of the vehicle.

10. The vehicle seat structure according to claim 9, characterized in that: The seat bottom plate (2) comprises two bottom plate longitudinal beams (21) extending in the length direction of the vehicle, and the two bottom plate longitudinal beams (21) are arranged opposite to each other in the width direction of the vehicle; The backrest frame (1) comprises two vertical beams (11) extending in the height direction of the vehicle, and the two vertical beams (11) are arranged opposite to each other in the width direction of the vehicle; The bottom plate longitudinal beam (21) and the vertical beam (11) located on the same side are hingedly connected.

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