Seat and vehicle with adjustable headrest

Abstract

The present invention discloses a seat and a vehicle with an adjustable headrest, including a seat cushion, a backrest rotatably provided at the lower end on the seat cushion, and a headrest provided at the upper end of the backrest through a rotating structure. The headrest can rotate backward so that the headrest on the first seat can be flush with the seat cushion on the second seat when the backrest on the first seat is reclined toward the second seat. With the above structure, the front row of seats can be made flush or substantially flush with the rear row of seats after being reclined, allowing the occupants to lie completely flat on the seat cushions of the front row and the rear row of seats, bringing a better user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and particularly to a seat and a vehicle with an adjustable headrest. Background Art

[0002] In existing automobiles, most seats are equipped with adjustable headrests, and users can adjust the height or angle of the headrest according to their own needs to achieve the most comfortable riding experience. However, in existing seats, the headrest can only be adjusted in height or towards the front side of the seat. Such seats cannot form a flat surface for the occupant to lie flat and rest completely after reclining backward, and there are certain defects in use. Therefore, there is an urgent need for a seat and a vehicle with an adjustable headrest to solve the above problems. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a seat and a vehicle with an adjustable headrest.

[0004] An embodiment of the present invention solves the technical problem by adopting the following technical solution: A seat with an adjustable headrest, including a seat cushion, a backrest rotatably arranged at the lower end on the seat cushion, and a headrest arranged at the upper end of the backrest through a rotating structure. The headrest can rotate backward so that the headrest on the first seat can be flush with the seat cushion on the second seat when the backrest on the first seat is reclined towards the second seat.

[0005] Further, the rotating structure includes:

[0006] A first connecting rod and a second connecting rod, which are inserted into the upper end of the backrest at intervals;

[0007] A rotating shaft, whose two ends are respectively rotatably connected to the first connecting rod and the second connecting rod, and the headrest is connected to the rotating shaft;

[0008] A driving component, arranged in the headrest and connected to the rotating shaft. The driving component can drive the rotating shaft to rotate, so as to drive the driving component and the headrest to rotate towards the second seat.

[0009] Further, the driving component includes:

[0010] A housing, arranged on the rotating shaft and fixed in the headrest. The housing has a motor chamber and a transmission chamber inside;

[0011] A motor, arranged in the motor chamber, and its output end is connected with a worm;

[0012] A turbine, arranged in the transmission chamber, the turbine meshes with the worm and is coaxially arranged with the rotating shaft.

[0013] Further, a receiving groove adapted to the housing is arranged in the headrest.

[0014] Further, the rotating shaft is arranged as a spline shaft, and further includes a plurality of planetary gears. An internal gear ring is arranged on the inner wall of the housing, and the planetary gears are meshed with the spline shaft and the internal gear ring.

[0015] Further, the first connecting rod and the second connecting rod are connected to the backrest through a height adjustment structure.

[0016] Further, the height adjustment structure includes:

[0017] A first adjustment groove and a second adjustment groove are arranged on the backrest and arranged along the height direction of the backrest. The first connecting rod and the second connecting rod are respectively inserted into the first adjustment groove and the second adjustment groove;

[0018] A plurality of positioning grooves are arranged at intervals along the length direction of the first adjustment groove and the second adjustment groove;

[0019] A plurality of positioning blocks are arranged at intervals along the length direction of the first connecting rod and the second connecting rod. The positioning blocks can extend into the positioning grooves when the first connecting rod and the second connecting rod are inserted into the first adjustment groove and the second adjustment groove.

[0020] Further, the seat with an adjustable headrest further includes a fixing frame with both ends respectively connected to two sides of the rotating shaft. The headrest is sleeved on the fixing frame, and the driving assembly is connected to the fixing frame through a fixing component.

[0021] Further, the fixing component includes a first fixing rod and a second fixing rod. One end of the first fixing rod and one end of the second fixing rod are connected to the driving assembly. The other end of the first fixing rod and the other end of the second fixing rod enclose a clamping space, and the fixing frame passes through the clamping space.

[0022] The vehicle includes the seat described above.

[0023] Advantages of the present invention: The seat with an adjustable headrest and the vehicle include a seat cushion, a backrest rotatably arranged at the lower end on the seat cushion, and a headrest arranged at the upper end of the backrest through a rotating structure. The headrest can rotate backward so that the headrest on the first seat can be flush with the seat cushion on the second seat when the backrest on the first seat is reclined towards the second seat; through the above structure, the front row seat can be made flush or approximately flush with the rear row seat after being reclined, allowing the occupant to lie flat completely on the seat cushions of the front row seat and the rear row seat, bringing a better user experience. Description of the Drawings

[0024] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, where:

[0025] Figure 1 It is a schematic diagram of the seat with an adjustable headrest after being reclined;

[0026] Figure 2 The first partial exploded view of a seat with an adjustable headrest;

[0027] Figure 3 The second partial exploded view of a seat with an adjustable headrest;

[0028] Figure 4 is Figure 3 The partial enlarged view of area A in

[0029] Figure 5 The third partial exploded view of a seat with an adjustable headrest;

[0030] Figure 6 is Figure 5 The partial enlarged view of area B in Detailed implementation manners

[0031] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0032] In the description of the present invention, the meaning of "a plurality" is more than two. Understand "greater than", "less than", "exceeding", etc. as not including the present number, and understand "above", "below", "within", etc. as including the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0033] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by "up", "down", "front", "back", "left", "right", 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 therefore cannot be understood as a limitation on the present invention.

[0034] In the present invention, unless otherwise clearly defined, words such as "set", "install", "connect", etc. should be understood in a broad sense. For example, it can be directly connected, or indirectly connected through an intermediate medium; it can be fixedly connected, or detachably connected, and can also be integrally formed; it can be mechanically connected; it can be the communication inside two elements or the interaction relationship between two elements. Those skilled in the technical field can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution.

[0035] Refer to Figures 1 to 6, A seat with an adjustable headrest, comprising a seat cushion 10, a backrest 20 rotatably provided at the lower end on the seat cushion 10, and a headrest 30 provided at the upper end of the backrest 20 through a rotating structure. The headrest 30 can be rotated backward so that the headrest 30 on the first seat can be flush with the seat cushion 10 on the second seat when the backrest 20 on the first seat is reclined towards the second seat.

[0036] In the present invention, when the user wants to recline the seat to lie down and rest, the headrest 30 of the front row seat is rotated towards the rear row seat through the rotating structure. Preferably, the headrest 30 is rotated until the relying surface of the headrest 30 is substantially flush with the upper end surface of the backrest 20. Then, the backrest 20 is fully reclined towards the rear row, and then the front and rear positions of the seat are adjusted so that the headrest 30 of the front row seat is substantially flush with the seat cushion 10 of the rear row seat. The user can then lie down completely on the backrest 20 of the front row seat, the headrest of the front row seat, and the seat cushion 10 of the rear row seat, bringing a better rest experience. Further, the rotation angle of the headrest 30 is preferably 90°. At this time, the lower end surface of the headrest 30 can be further designed into a supporting portion adapted to the human neck, which can better support the user's neck.

[0037] As a preferred embodiment of the rotating structure, the rotating structure includes:

[0038] A first connecting rod 41 and a second connecting rod 42, which are inserted into the upper end of the backrest 20 at intervals;

[0039] A rotating shaft 43, whose two ends are respectively rotatably connected to the first connecting rod 41 and the second connecting rod 42, and the headrest 30 is connected to the rotating shaft 43;

[0040] A driving component 44, which is arranged in the headrest 30 and connected to the rotating shaft 43. The driving component forty-four can drive the rotating shaft 43 to rotate, so as to drive the driving component 44 and the headrest 30 to rotate towards the second seat.

[0041] Of course, the rotating structure can also be a manual adjustment structure. When a manual adjustment structure is adopted, a limiting structure needs to be set to maintain the rotation angle of the headrest 30. The limiting structure can adopt the form of cooperation between a limiting block and a limiting groove, which will not be elaborated here.

[0042] The driving component 44 includes:

[0043] A housing 51, which is arranged on the rotating shaft 43 and fixed in the headrest 30. The housing 51 has a motor 52 cavity and a transmission cavity;

[0044] A motor 52, which is arranged in the motor 52 cavity, and its output end is connected with a worm 53;

[0045] The turbine 54 is disposed within the transmission cavity. The turbine 54 meshes with the worm 53 and is coaxially arranged with the rotating shaft 43. When the driving assembly 44 is operating, the motor 52 receives a key or a control command and then drives the worm 53 to rotate. Since the turbine 54 meshes with the worm 53 and is coaxially arranged with the rotating shaft 43, the turbine 54 and the rotating shaft 53 will be driven to rotate together. However, since the outer casing 51 is fixed within the headrest 30 and the outer casing 51 cannot rotate independently, the entire driving assembly 44 and the headrest 30 will be driven to rotate about the central axis of the rotating shaft 43, thereby realizing the rotational adjustment of the headrest 30. The rotational angle of the headrest 30 can be preset, or the rotational angle of the headrest 30 can be freely adjusted by controlling the keys.

[0046] As a first embodiment in which the driving assembly 44 is fixed within the headrest 30, a receiving groove adapted to the outer casing 51 is provided within the headrest 30.

[0047] The rotating shaft 43 is provided as a spline shaft, and further includes a plurality of planetary gears 61. An internal gear ring 62 is provided on the inner wall of the outer casing 51. The planetary gears 61 mesh with the spline shaft and the internal gear ring 62. By providing a plurality of planetary gears 61, the damping strength between the driving assembly 44 and the rotating shaft 43 is increased, enabling the headrest 30 to rotate better and providing a better user experience.

[0048] The first connecting rod 41 and the second connecting rod 42 are connected to the backrest 20 through a height adjustment structure. The height of the headrest 30 can be adjusted through the height adjustment structure, enabling the headrest 30 to fit better with the user's head and neck.

[0049] As a first embodiment of the height adjustment structure, the height adjustment structure includes:

[0050] A first adjustment groove and a second adjustment groove are provided on the backrest 20 and arranged along the height direction of the backrest 20. The first connecting rod 41 and the second connecting rod 42 are respectively inserted into the first adjustment groove and the second adjustment groove.

[0051] A plurality of positioning grooves are arranged at intervals along the length direction of the first adjustment groove and the second adjustment groove.

[0052] A plurality of positioning blocks are arranged at intervals along the length direction of the first connecting rod 41 and the second connecting rod 42. The positioning blocks can extend into the positioning grooves when the first connecting rod 41 and the second connecting rod 42 are inserted into the first adjustment groove and the second adjustment groove. Of course, the height adjustment structure can also be an electric adjustment structure. The electric adjustment structure can use a motor to drive a lead screw to rotate. A moving block is screwed to the lead screw and is provided with a guiding structure, which can convert the rotational motion of the lead screw into a linear motion of the moving block. The detailed structure will not be elaborated here.

[0053] As a second embodiment, which is also a preferred embodiment, of the driving component 44 fixed within the headrest 30, a seat having an adjustable headrest further includes a fixing frame 70 with both ends respectively connected to two sides of a rotating shaft 43. The headrest 30 is sleeved on the fixing frame 70, and the driving component 44 is connected to the fixing frame 70 through a fixing component 80.

[0054] The fixing component 80 includes a first fixing rod 81 and a second fixing rod 82. One end of the first fixing rod 81 and one end of the second fixing rod 82 are connected to the driving component 44. The other ends of the first fixing rod 81 and the second fixing rod 82 enclose a clamping space, and the fixing frame 70 passes through the clamping space. This can make the connection between the driving component 44 and the headrest 30 more stable, avoid problems such as unsmooth movement and abnormal noise, and bring a better user experience.

[0055] The seat included in the vehicle.

[0056] Certainly, the present invention is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A seat with an adjustable headrest, characterized in that: It includes a seat cushion (10), a backrest (20) rotatably arranged at the lower end on the seat cushion (10), and a headrest (30) arranged at the upper end of the backrest (20) through a rotating structure. The headrest (30) can rotate backward so that the headrest (30) on the first seat can be flush with the seat cushion (10) on the second seat when the backrest (20) on the first seat is laid down towards the second seat. The rotating structure includes a first connecting rod (41) and a second connecting rod (42), which are inserted into the upper end of the backrest (20) at intervals; a rotating shaft (43) whose two ends are respectively rotatably connected to the first connecting rod (41) and the second connecting rod (42), and the headrest (30) is connected to the rotating shaft (43); a driving component (44) arranged in the headrest (30) and connected to the rotating shaft (43), and the driving component (44) can drive the rotating shaft (43) to rotate so as to drive the driving component (44) and the headrest (30) to rotate towards the second seat. The driving component (44) includes a housing (51) arranged on the rotating shaft (43) and fixed in the headrest (30). The housing (51) has a motor cavity and a transmission cavity; a motor (52) arranged in the motor cavity, and its output end is connected with a worm (53); a worm gear (54) arranged in the transmission cavity, and the worm gear (54) meshes with the worm (53) and is coaxially arranged with the rotating shaft (43). The rotating shaft (43) is arranged as a spline shaft, and further includes a plurality of planetary gears (61). An internal tooth ring (62) is arranged on the inner wall of the housing (51), and the planetary gears (61) mesh with the spline shaft and the internal tooth ring (62). It further includes a fixing frame (70) whose two ends are respectively connected to both sides of the rotating shaft (43). The headrest (30) is sleeved on the fixing frame (70), and the driving component (44) is connected to the fixing frame (70) through a fixing component (80).

2. The seat with an adjustable headrest according to claim 1, characterized in that: A receiving groove adapted to the housing (51) is arranged in the headrest (30).

3. The seat with an adjustable headrest according to claim 1, characterized in that: The first connecting rod (41) and the second connecting rod (42) are connected to the backrest (20) through a height adjustment structure.

4. The seat with an adjustable headrest according to claim 3, characterized in that, The height adjustment structure includes: A first adjustment groove and a second adjustment groove, which are arranged on the backrest (20) along the height direction of the backrest (20), and the first connecting rod (41) and the second connecting rod (42) are respectively inserted into the first adjustment groove and the second adjustment groove. A plurality of positioning grooves are arranged at intervals along the length direction of the first adjustment groove and the second adjustment groove. A plurality of positioning blocks are arranged at intervals along the length direction of the first connecting rod (41) and the second connecting rod (42), and the positioning blocks can extend into the positioning grooves when the first connecting rod (41) and the second connecting rod (42) are inserted into the first adjustment groove and the second adjustment groove.

5. The seat with an adjustable headrest according to claim 1, characterized in that: The fixing component (80) includes a first fixing rod (81) and a second fixing rod (82). One end of the first fixing rod (81) and one end of the second fixing rod (82) are connected to the driving component (44). The other ends of the first fixing rod (81) and the second fixing rod (82) enclose a clamping space, and the fixing frame (70) is disposed through the clamping space.

6. A vehicle, characterized in that: Comprising the seat according to any one of claims 1-5.

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