Folding seat with adjustable leg support for commercial vehicle

Abstract

The utility model relates to a folding seat with an adjustable leg support for a commercial vehicle. The folding seat comprises a first seat connecting plate, a second seat connecting plate, a backrest connecting plate, a middle connecting plate, a leg support connecting plate, a backrest assembly, a seat assembly and a leg support assembly, a first angle adjusting assembly is arranged at the bottom end of the backrest assembly; a second angle adjusting assembly is arranged at the end, away from the backrest assembly, of the seat assembly. The end, close to the seat assembly, of the leg support assembly is connected with one end of a leg support connecting plate through a third angle adjusting assembly. According to the utility model, the backrest assembly and the leg support assembly are rotated and folded, so that the seat assemblies are in different states, and multiple functions of the seat can be conveniently realized.

Description

Technical Field

[0001] The utility model relates to a seat, in particular to an adjustable and foldable seat with a leg rest for a commercial vehicle. Background Art

[0002] Commercial vehicles are commonly used means of transportation for people's daily travel and business trips. At present, most of the vehicle seats in commercial vehicles have angle functions. For example, the angle of the leg rest assembly can be adjusted to adapt to the support of the legs of different users. The backrest assembly can also be rotated backward by a certain angle to achieve basic flatness between the backrest assembly and the seat assembly to meet the needs of people when lying down to rest. However, the adjustment of the above seats can only satisfy the passengers to keep their vision forward, that is, to keep the passengers and the driver sitting in the same direction and keep the same vision as the driver, and cannot meet the needs of the passengers to sit backward on the seat to enjoy the scenery of the area passed by the commercial vehicle. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems in the related art to some extent. For this purpose, the utility model provides an adjustable and foldable seat with a leg rest for a commercial vehicle.

[0004] The technical solution adopted by the utility model to solve its technical problems is: an adjustable and foldable seat with a leg rest for a commercial vehicle, including a first seat connecting plate, a second seat connecting plate, a backrest connecting plate, an intermediate connecting plate, a leg rest connecting plate, a backrest assembly, a seat assembly and a leg rest assembly; a first angle adjustment assembly is provided at the bottom end of the backrest assembly, one end of the backrest connecting plate is arranged on the backrest assembly, and the other end of the backrest connecting plate is connected to the first angle adjustment assembly;

[0005] One end of the first seat connecting plate is provided at one end of the seat assembly close to the backrest assembly, and the other end of the first seat connecting plate is fixedly arranged on one side of the first angle adjustment assembly;

[0006] A second angle adjustment assembly is provided at the end of the seat assembly far from the backrest assembly, one end of the second seat connecting plate is arranged on the seat assembly, and the other end of the second seat connecting plate is fixedly arranged on one side of the second angle adjustment assembly;

[0007] One end of the leg rest connecting plate is connected to the leg rest assembly at one end of the leg rest assembly close to the seat assembly through a third angle adjustment assembly, and the other end of the leg rest connecting plate is arranged on the leg rest assembly; one end of the intermediate connecting plate is connected to the second angle adjustment assembly, and the other end of the intermediate connecting plate is fixedly arranged on one side of the third angle adjustment assembly.

[0008] In a preferred embodiment of the present utility model, the first angle adjustment assembly includes a first angle adjustment motor, a first lead screw, and a first angle disc. The first lead screw is disposed at the axis center of the first angle adjustment motor. A backrest connecting plate and a first angle disc are provided on the first lead screw. One end of a first seat connecting plate is fixedly provided on one side of the first angle disc. The backrest connecting plate drives the backrest assembly to rotate away from the seat assembly under the drive of the first angle adjustment motor;

[0009] The second angle adjustment assembly includes a second angle adjustment motor, a second lead screw, and a second angle disc. The second lead screw is disposed at the axis center of the second angle adjustment motor. A second angle disc and an intermediate connecting plate are provided on the second lead screw. One end of a second seat connecting plate is fixedly provided on one side of the second angle disc. The intermediate connecting plate drives the leg rest connecting plate and the leg rest assembly to rotate towards the backrest assembly under the drive of the second angle adjustment motor;

[0010] The third angle adjustment assembly includes a third angle adjustment motor, a third lead screw, and a third angle disc. The third lead screw is disposed at the axis center of the third angle adjustment motor. A third angle disc and a leg rest connecting plate are provided on the third lead screw. One end of the intermediate connecting plate is fixedly provided on one side of the third angle disc. The leg rest connecting plate drives the leg rest assembly to rotate and fold onto the seat assembly under the drive of the third angle adjustment motor.

[0011] In a preferred embodiment of the present utility model, the first seat connecting plate and the backrest connecting plate are respectively located on both sides of the first angle disc. A first limit post is provided on the backrest connecting plate. A first limit groove is provided on the first seat connecting plate, and the first limit groove is provided on the side of the first seat connecting plate away from the seat assembly. The first limit post slidably fits along the first limit groove.

[0012] In a preferred embodiment of the present utility model, the second seat connecting plate and the intermediate connecting plate are respectively located on both sides of the second angle disc. A second limit post is provided on the intermediate connecting plate. A second limit groove is provided on the second seat connecting plate. The second limit post slidably fits along the second limit groove.

[0013] In a preferred embodiment of the present utility model, the intermediate connecting plate and the leg rest connecting plate are respectively located on both sides of the third angle disc. A third limit post is provided on the leg rest connecting plate. A third limit groove is provided on the intermediate connecting plate, and the third limit groove is provided on the side of the leg rest connecting plate away from the seat assembly. The third limit post slidably fits along the third limit groove.

[0014] In a preferred embodiment of the present utility model, the first limit groove, the second limit groove, and the third limit groove are all 1 / 4 circular arc grooves.

[0015] In a preferred embodiment of the present utility model, there are two first angle adjustment motors, which are respectively arranged on both sides of the bottom end of the backrest assembly. The first lead screw passes through the axles of the two first angle adjustment motors, and the backrest connection plates and the first angle discs are respectively arranged at both ends of the first lead screw.

[0016] There are two second angle adjustment motors, which are respectively arranged on both sides of the seat assembly. The second lead screw passes through the axles of the two second angle adjustment motors, and the intermediate connection plates and the second angle discs are respectively arranged at both ends of the second lead screw.

[0017] There are two third angle adjustment motors, which are respectively arranged on both sides of the leg rest assembly. The third lead screw passes through the axles of the two third angle adjustment motors, and the leg rest connection plates and the third angle discs are respectively arranged at both ends of the third lead screw.

[0018] In a preferred embodiment of the present utility model, the backrest assembly, the seat assembly and the leg rest assembly are in the following four states:

[0019] First, the backrest assembly and the seat assembly are in the original vertical state, and both the leg rest assembly and the seat assembly are in the original horizontal setting.

[0020] Second, the backrest assembly rotates away from the seat assembly under the drive of the first angle adjustment assembly until both the backrest assembly and the seat assembly are horizontally arranged; both the leg rest assembly and the seat assembly are horizontally arranged.

[0021] Third, the backrest assembly and the seat assembly are in the original vertical state, and the leg rest assembly drives the intermediate connection plate, the leg rest connection plate and the leg rest assembly to rotate towards the backrest assembly under the drive of the second angle adjustment assembly until the leg rest assembly is perpendicular to the seat assembly.

[0022] The leg rest assembly is driven by the third angle adjustment assembly to drive the leg rest connection plate to drive the leg rest assembly to rotate and fold on the seat assembly until the leg rest assembly folds on the seat assembly.

[0023] Fourth, the backrest assembly rotates away from the seat assembly under the drive of the first angle adjustment assembly until both the backrest assembly and the seat assembly are horizontally arranged; the leg rest assembly drives the intermediate connection plate, the leg rest connection plate and the leg rest assembly to rotate towards the backrest assembly under the drive of the second angle adjustment assembly until an obtuse angle is formed between the leg rest assembly and the seat assembly.

[0024] The beneficial effects of the present utility model are as follows: For the seat of the present utility model, when the seat is not in use, the leg rest assembly can be folded on the seat assembly to reduce space occupation; when the leg rest assembly and the backrest assembly are respectively adjusted to the horizontal position, passengers can lie on the seat to rest, and the seat is in the sleep mode at this time, improving the comfort of passengers; when the backrest assembly is adjusted to the horizontal state and the leg rest assembly is adjusted to form an obtuse angle with the seat assembly, passengers can sit on the seat in the reverse direction, facilitating passengers to enjoy the scenery passing by the commercial vehicle. At this time, the seat is in the scenery viewing mode. Through the rotation and folding of the backrest assembly and the leg rest assembly, the present utility model realizes different states between the seat assemblies, facilitating the realization of various functions of the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the structural schematic diagram of the present utility model Figure 1 ;

[0026] Figure 2 is Figure 1 the enlarged structural schematic diagram at position A in

[0027] Figure 3 is the structural schematic diagram of the connection between the middle connecting plate and the second seat connecting plate and the leg rest connecting plate;

[0028] Figure 4 is the structural schematic diagram of the present utility model Figure 2 ;

[0029] Figure 5 is Figure 4 the enlarged structural schematic diagram at position B in

[0030] Figure 6 is Figure 4 the enlarged structural schematic diagram at position C in

[0031] Figure 7 is Figure 4 the enlarged structural schematic diagram at position D in

[0032] Figure 8 is the structural schematic diagram of the sponge pads arranged on the backrest assembly, the seat assembly and the leg rest assembly;

[0033] Figure 9 is the structural schematic diagram when the backrest assembly is perpendicular to the seat assembly and the seat assembly and the leg rest assembly are in the horizontal state;

[0034] Figure 10 is the structural schematic diagram when the backrest assembly, the seat assembly and the leg rest assembly are all in the horizontal state;

[0035] Figure 11 is the structural schematic diagram when the backrest assembly is perpendicular to the seat assembly and the leg rest assembly is folded on the seat assembly;

[0036] Figure 12 It is a schematic structural diagram of the backrest assembly and the seat assembly in a horizontal state, and the leg rest assembly rotates towards the backrest direction.

[0037] In the figure: the first connecting plate of the seat 1; the first limiting groove 101; the second connecting plate of the seat 2; the second limiting groove 201; the backrest connecting plate 3; the first limiting post 301; the middle connecting plate 4; the second limiting post 401; the third limiting groove 402; the leg rest connecting plate 5; the third limiting post 501; the backrest assembly 6; the seat assembly 7; the leg rest assembly 8; the first angle adjustment assembly 9; the first angle adjustment motor 901; the first lead screw 902; the first angle disc 903; the second angle adjustment assembly 10; the second angle adjustment motor 1001; the second lead screw 1002; the second angle disc 1003; the third angle adjustment assembly 11; the third angle adjustment motor 1101; the third lead screw 1102; the third angle disc 1103; the sponge pad 12. Specific embodiments

[0038] The following details the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0040] As Figures 1 to 12A business vehicle leg rest adjustable folding seat is shown, including a first seat connecting plate 1, a second seat connecting plate 2, a backrest connecting plate 3, an intermediate connecting plate 4, a leg rest connecting plate 5, a backrest assembly 6, a seat assembly 7, and a leg rest assembly 8; a first angle adjustment assembly 9 is provided at the bottom end of the backrest assembly 6, one end of the backrest connecting plate 3 is arranged on the backrest assembly 6, and the other end of the backrest connecting plate 3 is connected to the first angle adjustment assembly 9; the backrest connecting plate 3 drives the backrest assembly 6 to rotate away from the seat assembly 7 under the drive of the first angle adjustment assembly 9;

[0041] One end of the first seat connecting plate 1 is provided at one end of the seat assembly 7 close to the backrest assembly 6, and the other end of the first seat connecting plate 1 is fixedly arranged on one side of the first angle adjustment assembly 9;

[0042] A second angle adjustment assembly 10 is provided at the end of the seat assembly 7 far from the backrest assembly 6, one end of the second seat connecting plate 2 is arranged on the seat assembly 7, and the other end of the second seat connecting plate 2 is fixedly arranged on one side of the second angle adjustment assembly 10;

[0043] One end of the leg rest connecting plate 5 is connected to one end of the leg rest assembly 8 close to the seat assembly 7 through a third angle adjustment assembly 11, and the other end of the leg rest connecting plate 5 is arranged on the leg rest assembly 8; one end of the intermediate connecting plate 4 is connected to the second angle adjustment assembly 10, and the other end of the intermediate connecting plate 4 is fixedly arranged on one side of the third angle adjustment assembly 11. Sponge pads 12 are respectively provided on the backrest assembly 6, the seat assembly 7, and the leg rest assembly 8.

[0044] The following four states exist among the backrest assembly, the seat assembly, and the leg rest assembly:

[0045] One, as Figure 9 shown, the backrest assembly 6 and the seat assembly 7 are in the original vertical state, and both the leg rest assembly 8 and the seat assembly 7 are in the original horizontal setting;

[0046] Two, as Figure 10 shown, the backrest assembly 6 rotates away from the seat assembly 7 under the drive of the first angle adjustment assembly 9 until both the backrest assembly 6 and the seat assembly 7 are horizontally set; both the leg rest assembly 8 and the seat assembly 7 are horizontally set;

[0047] Three, as Figure 11 shown, the backrest assembly 6 and the seat assembly 7 are in the original vertical state, and the leg rest assembly 8 drives the intermediate connecting plate 4, the leg rest connecting plate 5, and the leg rest assembly 8 to rotate towards the backrest assembly 6 through the second angle adjustment assembly 10 until the leg rest assembly 8 is perpendicular to the seat assembly 7;

[0048] Drive the leg rest connecting plate 5 through the third angle adjustment component 11 to drive the leg rest component 8 to rotate towards folding on the seat component 7 until the leg rest component 8 folds on the seat component 7;

[0049] IV. As Figure 12 shown, the backrest component 6 rotates away from the seat component 7 under the drive of the first angle adjustment component 9 until both the backrest component 6 and the seat component 7 are horizontally arranged; the leg rest component 8 drives the intermediate connecting plate 4, the leg rest connecting plate 5, and the leg rest component 8 to rotate towards the backrest component 6 under the drive of the second angle adjustment component 10 until an obtuse angle is formed between the leg rest component 8 and the seat component 7.

[0050] As a preferred implementation manner, the first angle adjustment component 9 in the present application includes a first angle adjustment motor 901, a first lead screw 902, and a first angle disc 903. The first lead screw 902 is arranged at the axis center of the first angle adjustment motor 901. A backrest connecting plate 3 and a first angle disc 903 are provided on the first lead screw 902, and one end of the first seat connecting plate 1 is fixedly provided on one side of the first angle disc 903. The backrest connecting plate 3 drives the backrest component 6 to rotate away from the seat component 7 under the drive of the first angle adjustment motor 901;

[0051] The second angle adjustment component 10 includes a second angle adjustment motor 1001, a second lead screw 1002, and a second angle disc 1003. The second lead screw 1002 is arranged at the axis center of the second angle adjustment motor 1001. A second angle disc 1003 and an intermediate connecting plate 4 are provided on the second lead screw 1002, and one end of the second seat connecting plate 2 is fixedly provided on one side of the second angle disc 1003. The intermediate connecting plate 4 drives the leg rest connecting plate 5 and the leg rest component 8 to rotate towards the backrest component 6 under the drive of the second angle adjustment motor 1001;

[0052] The third angle adjustment component 11 includes a third angle adjustment motor 1101, a third lead screw 1102, and a third angle disc 1103. The third lead screw 1102 is arranged at the axis center of the third angle adjustment motor 1101. A third angle disc 1103 and a leg rest connecting plate 5 are provided on the third lead screw 1102, and one end of the intermediate connecting plate 4 is fixedly provided on one side of the third angle disc 1103. The leg rest connecting plate 5 drives the leg rest component 8 to rotate towards folding on the seat component 7 under the drive of the third angle adjustment motor 1101.

[0053] In the original state, as Figure 9 shown, the seat component 7 and the backrest component 6 are in an original vertical state, the leg rest component 8 and the seat component 7 are both in an original horizontal setting, passengers can normally sit on the seat, the backrest component 6 realizes the support for the passengers' backs, and the leg rest component 8 realizes the support for the passengers' legs.

[0054] AsFigure 10 As shown, when a passenger needs to lie down and rest, the first angle adjustment motor 901 is activated. Then, the first angle adjustment motor 901 drives the first lead screw 902 to rotate. The first lead screw 902 drives the backrest connection plate 3 to rotate. Further, the backrest connection plate 3 drives the backrest assembly 6 to rotate away from the seat assembly 7 until both the backrest assembly 6 and the seat assembly 7 are horizontally arranged. At this time, the backrest assembly 6, the seat assembly 7, and the leg rest assembly 8 are all horizontally arranged, facilitating the passenger to lie down and rest, realizing the sleep mode of the seat, improving the functionality of the seat, and enhancing the comfort of the passenger.

[0055] As Figure 11 shown, when the seat is not needed, the leg rest assembly can be folded and stored on the seat assembly. The first angle adjustment motor 901 is activated, and the first angle adjustment motor 901 drives the first lead screw 902, and then drives the backrest connection plate 3 and the backrest assembly 6 to rotate towards the seat assembly 7 until the backrest assembly 6 and the seat assembly 7 are in the original vertical state, avoiding occupying the space in the business vehicle when the backrest assembly is in the horizontal state. The second angle adjustment motor 1001 is activated, and the second angle adjustment motor 1001 drives the second lead screw 1002 to rotate. Then, through the second lead screw 1002, the intermediate connection plate 4 is driven to rotate towards the backrest assembly 6. The intermediate connection plate 4 drives the third angle adjustment assembly 11, the leg rest connection plate 5, and the leg rest assembly 8 to rotate towards the backrest assembly 6 until the leg rest assembly 8 and the seat assembly 7 are in the original vertical state.

[0056] Then, the third angle adjustment motor 1101 is activated, and the third angle adjustment motor 1101 drives the third lead screw 1102 to rotate. The third lead screw 1103 drives the leg rest connection plate 5 to rotate. Finally, the leg rest connection plate 5 drives the leg rest assembly 8 to rotate and fold on the seat assembly 7 until the leg rest assembly 8 is folded on the seat assembly 7. At this time, the storage function of the leg rest is completed, reducing the space occupied in the business vehicle and improving the comfort of the passenger.

[0057] As Figure 12As shown in the figure, when a passenger needs to take a reverse ride to enjoy the scenery passing by the commercial vehicle, the first angle adjustment motor 901 is started. Then, the first angle adjustment motor 901 drives the first lead screw 902 to rotate, and the first lead screw 902 drives the backrest connecting plate 3 to rotate. Further, the backrest connecting plate 3 drives the backrest assembly 6 to rotate away from the seat assembly 7 until both the backrest assembly 6 and the seat assembly 7 are horizontally arranged. The third angle adjustment motor 1101 is started, and the third angle adjustment motor 1101 drives the third lead screw 1102 to rotate. The third lead screw 1103 rotates the leg rest connecting plate 5. Finally, the leg rest connecting plate 5 drives the leg rest assembly 8 to rotate towards the backrest assembly 9 until an obtuse angle is formed between the leg rest assembly 8 and the seat assembly 7. At this time, the leg rest assembly 8 can be used as a structural component to support the back, and the backrest assembly 6 can be used as a support structure to support the legs and feet, facilitating the passenger to take a reverse ride and improving the functionality of the seat. At this time, the seat realizes the landscape viewing mode.

[0058] As a preferred embodiment, the first seat connecting plate 1 and the backrest connecting plate 3 are respectively located on both sides of the first angle disc 903. The backrest connecting plate 3 is provided with a first limit post 301, and the first seat connecting plate 1 is provided with a first limit groove 101. The first limit groove 101 is arranged on the side of the first seat connecting plate 1 away from the seat assembly 7. The first limit post 301 slidably matches along the first limit groove 101, ensuring the stability of the backrest connecting plate 3 when it rotates driven by the first lead screw 902.

[0059] As a preferred embodiment, the second seat connecting plate 2 and the intermediate connecting plate 4 in the present application are respectively located on both sides of the second angle disc 1003. The intermediate connecting plate 4 is provided with a second limit post 401, and the second seat connecting plate 2 is provided with a second limit groove 201. The second limit post 401 slidably matches along the second limit groove 201, ensuring the stability of the intermediate connecting plate 4 when it rotates driven by the second lead screw 1102.

[0060] As a preferred embodiment, the intermediate connecting plate 4 and the leg rest connecting plate 5 are respectively located on both sides of the third angle disc 1103. The leg rest connecting plate 5 is provided with a third limit post 501, and the intermediate connecting plate 4 is provided with a third limit groove 402. The third limit groove 402 is arranged on the side of the leg rest connecting plate 5 away from the seat assembly 7. The third limit post 501 slidably matches along the third limit groove 402, ensuring the stability of the leg rest connecting plate 5 when it rotates under the action of the third lead screw 1103.

[0061] Moreover, the first limiting groove 101, the second limiting groove 201, and the third limiting groove 402 in this application are all 1 / 4 circular arc grooves. That is, the rotation angles of the backrest connecting plate 3, the middle connecting plate 4, and the leg rest connecting plate 5 are all 90°. This facilitates the rotation of the backrest assembly 6 by 90° from a vertical state with the seat assembly 7 to a horizontal state with the seat assembly 7, and also facilitates the middle connecting plate 4 to drive the leg rest assembly 8 to rotate 90° along the second angle disc 1003, changing from a horizontal state between the leg rest assembly 8 and the seat assembly 7 to a vertical state between the leg rest assembly 8 and the seat assembly 7; it also facilitates the leg rest connecting plate 5 to drive the leg rest assembly 8 to rotate 90° and fold on the seat assembly 7, reducing the space occupied by the seat assembly in the business vehicle when not in use.

[0062] As a preferred implementation manner, there are two first angle adjustment motors 901 in this application, which are respectively arranged on both sides of the bottom end of the backrest assembly 6. The first lead screw 902 passes through the axes of the two first angle adjustment motors 901. The two ends of the first lead screw 902 are respectively provided with the backrest connecting plate 3 and the first angle disc 903. The arrangement of the two first angle adjustment motors 901 is beneficial to improving the driving stability of the first lead screw 902;

[0063] There are two second angle adjustment motors 1001, which are respectively arranged on both sides of the seat assembly 7. The second lead screw 1002 passes through the axes of the two second angle adjustment motors 1001. The two ends of the second lead screw 1002 are respectively provided with the middle connecting plate 4 and the second angle disc 1003. The arrangement of the two second angle adjustment motors 1001 is beneficial to improving the driving stability of the second lead screw 1002;

[0064] There are two third angle adjustment motors 1101, which are respectively arranged on both sides of the leg rest assembly 8. The third lead screw 1103 passes through the axes of the two third angle adjustment motors 1101. The two ends of the third lead screw 1103 are respectively provided with the leg rest connecting plate 5 and the third angle disc 1103. The arrangement of the two third angle adjustment motors 1101 is beneficial to improving the driving stability of the third lead screw 1102.

[0065] In the description of this specification, the description with reference to terms such as "one implementation manner", "certain implementation manners", "schematic implementation manners", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the implementation manner or example are included in at least one implementation manner or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same implementation manner or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more implementation manners or examples.

[0066] In summary, although the present utility model has been disclosed above with the preferred embodiments, the above preferred embodiments are not intended to limit the present utility model. Those of ordinary skill in the art can make various modifications and refinements without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the scope defined by the claims.

Claims

1. A leg rest adjustable and foldable seat for a commercial vehicle, characterized in that, It includes a first seat connecting plate (1), a second seat connecting plate (2), a backrest connecting plate (3), an intermediate connecting plate (4), a leg rest connecting plate (5), a backrest assembly (6), a seat assembly (7) and a leg rest assembly (8); a first angle adjustment assembly (9) is provided at the bottom end of the backrest assembly (6), one end of the backrest connecting plate (3) is arranged on the backrest assembly (6), and the other end of the backrest connecting plate (3) is connected to the first angle adjustment assembly (9); One end of the first seat connecting plate (1) is provided at one end of the seat assembly (7) close to the backrest assembly (6), and the other end of the first seat connecting plate (1) is fixedly arranged on one side of the first angle adjustment assembly (9); A second angle adjustment assembly (10) is provided at one end of the seat assembly (7) far from the backrest assembly (6), one end of the second seat connecting plate (2) is arranged on the seat assembly (7), and the other end of the second seat connecting plate (2) is fixedly arranged on one side of the second angle adjustment assembly (10); One end of the leg rest connecting plate (5) is connected to one end of the leg rest assembly (8) through a third angle adjustment assembly (11) at one end of the leg rest assembly (8) close to the seat assembly (7), and the other end of the leg rest connecting plate (5) is arranged on the leg rest assembly (8); one end of the intermediate connecting plate (4) is connected to the second angle adjustment assembly (10), and the other end of the intermediate connecting plate (4) is fixedly arranged on one side of the third angle adjustment assembly (11).

2. The adjustable and foldable leg rest seat for a commercial vehicle according to claim 1, wherein The first angle adjustment assembly (9) includes a first angle adjustment motor (901), a first lead screw (902) and a first angle disc (903), the first lead screw (902) is arranged at the axis center of the first angle adjustment motor (901), the backrest connecting plate (3) and the first angle disc (903) are arranged on the first lead screw (902), and one end of the first seat connecting plate (1) is fixedly arranged on one side of the first angle disc (903), and the backrest connecting plate (3) drives the backrest assembly (6) to rotate away from the seat assembly (7) under the drive of the first angle adjustment motor (901); The second angle adjustment assembly (10) includes a second angle adjustment motor (1001), a second lead screw (1002) and a second angle disc (1003), the second lead screw (1002) is arranged at the axis center of the second angle adjustment motor (1001), the second angle disc (1003) and the intermediate connecting plate (4) are arranged on the second lead screw (1002), and one end of the second seat connecting plate (2) is fixedly arranged on one side of the second angle disc (1003), and the intermediate connecting plate (4) drives the leg rest connecting plate (5) and the leg rest assembly (8) to rotate towards the backrest assembly (6) under the drive of the second angle adjustment motor (1001); The third angle adjustment assembly (11) includes a third angle adjustment motor (1101), a third lead screw (1102), and a third angle disc (1103). The third lead screw (1102) is disposed at the axis center of the third angle adjustment motor (1101). A third angle disc (1103) and a leg rest connecting plate (5) are provided on the third lead screw (1102). One end of an intermediate connecting plate (4) is fixedly provided on one side of the third angle disc (1103). The leg rest connecting plate (5) drives the leg rest assembly (8) to rotate and fold on the seat assembly (7) under the drive of the third angle adjustment motor (1101).

3. The adjustable and foldable seat for the leg rest of a commercial vehicle according to claim 2, characterized in that, The first seat connecting plate (1) and the backrest connecting plate (3) are respectively located on both sides of the first angle disc (903). A first limit post (301) is provided on the backrest connecting plate (3), and a first limit groove (101) is provided on the first seat connecting plate (1). The first limit groove (101) is disposed on the side of the first seat connecting plate (1) away from the seat assembly (7). The first limit post (301) slidably matches along the first limit groove (101).

4. The adjustable and foldable leg rest seat for a commercial vehicle according to claim 3, wherein, The second seat connecting plate (2) and the intermediate connecting plate (4) are respectively located on both sides of the second angle disc (1003). A second limit post (401) is provided on the intermediate connecting plate (4), and a second limit groove (201) is provided on the second seat connecting plate (2). The second limit post (401) slidably matches along the second limit groove (201).

5. The adjustable and foldable seat for the leg rest of a commercial vehicle according to claim 4, wherein The intermediate connecting plate (4) and the leg rest connecting plate (5) are respectively located on both sides of the third angle disc (1103). A third limit post (501) is provided on the leg rest connecting plate (5), and a third limit groove (402) is provided on the intermediate connecting plate (4). The third limit groove (402) is disposed on the side of the leg rest connecting plate (5) away from the seat assembly (7). The third limit post (501) slidably matches along the third limit groove (402).

6. The adjustable and foldable leg rest seat for commercial vehicle according to claim 2, wherein, The first limit groove (101), the second limit groove (201), and the third limit groove (402) are all 1 / 4 circular arc grooves.

7. The adjustable and foldable leg rest seat for a commercial vehicle according to claim 1, wherein, There are two first angle adjustment motors (901), which are respectively disposed on both sides of the bottom end of the backrest assembly (6). The first lead screw (902) passes through the axis centers of the two first angle adjustment motors (901). The backrest connecting plate (3) and the first angle disc (903) are respectively provided at both ends of the first lead screw (902). There are two second angle adjustment motors (1001), which are respectively disposed on both sides of the seat assembly (7). The second lead screw (1002) passes through the axis centers of the two second angle adjustment motors (1001). The intermediate connecting plate (4) and the second angle disc (1003) are respectively provided at both ends of the second lead screw (1002). There are two of the third angular adjustment motors (1101), which are respectively arranged on both sides of the leg rest assembly (8). The third lead screw (1103) passes through the axes of the two third angular adjustment motors (1101). At both ends of the third lead screw (1103), there are respectively provided a leg rest connecting plate (5) and a third angle disc (1103).

8. The adjustable and foldable seat for the leg rest of a commercial vehicle according to any one of claims 1-7, characterized in that, The backrest assembly, the seat assembly and the leg rest assembly are in the following four states: First, the backrest assembly (6) and the seat assembly (7) are in the original vertical state, and both the leg rest assembly (8) and the seat assembly (7) are in the original horizontal setting; Second, the backrest assembly (6) rotates away from the seat assembly (7) under the drive of the first angle adjustment assembly (9) until both the backrest assembly (6) and the seat assembly (7) are horizontally set; both the leg rest assembly (8) and the seat assembly (7) are in the horizontal setting; Third, the backrest assembly (6) and the seat assembly (7) are in the original vertical state. The leg rest assembly (8) drives the intermediate connecting plate (4), the leg rest connecting plate (5), and the leg rest assembly (8) to rotate towards the backrest assembly (6) under the drive of the second angle adjustment assembly (10) until the leg rest assembly (8) is perpendicular to the seat assembly (7); The leg rest connecting plate (5) is driven by the third angle adjustment assembly (11) to drive the leg rest assembly (8) to rotate and fold on the seat assembly (7) until the leg rest assembly (8) folds on the seat assembly (7); Fourth, the backrest assembly (6) rotates away from the seat assembly (7) under the drive of the first angle adjustment assembly (9) until both the backrest assembly (6) and the seat assembly (7) are horizontally set; the leg rest assembly (8) drives the intermediate connecting plate (4), the leg rest connecting plate (5), and the leg rest assembly (8) to rotate towards the backrest assembly (6) under the drive of the second angle adjustment assembly (10) until an obtuse angle is formed between the leg rest assembly (8) and the seat assembly (7).

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