Headrest device for seat, seat and vehicle

Abstract

The invention discloses a headrest device for a seat, the seat and a vehicle. The headrest device comprises a headrest body, an elastic part and a connecting part, the connecting rod assembly comprises a first connecting rod and a second connecting rod which are distributed in parallel in the width direction of the seat at intervals and connected with the headrest body. The connecting sleeve assembly comprises a first connecting sleeve and a second connecting sleeve, the first connecting sleeve sleeves one end, away from the headrest body, of the first connecting rod, and the second connecting sleeve sleeves one end, away from the headrest body, of the second connecting rod; the driving assembly is arranged between the first connecting sleeve and the second connecting sleeve and is used for simultaneously driving the first connecting sleeve and the second connecting sleeve to switch between a first state and a second state; in the first state, the headrest body is in an upright state; and in the second state, the headrest body is in a horizontal state. According to the headrest device for the seat, the headrest body can be switched between the vertical state and the horizontal state, and the headrest device has the advantages of being simple in structure and compact in layout.

Description

Technical Field

[0001] This application belongs to the field of automotive technology, and specifically relates to a headrest device for a seat, a seat, and a vehicle. Background Technology

[0002] With the gradual development of intelligent vehicles, people's requirements for seat comfort are also increasing. More and more models have a double bed mode, that is, when the front seat back is folded down, it forms a supporting space connected to the second-row seat cushion. At the same time, these models have a multi-functional space for the second-row seats, that is, the passenger (or driver) seat moves forward and the backrest is folded forward to maximize the second-row space. However, the existing technology of car headrests is still difficult to flip (or fold) significantly, which results in a less open field of vision after adjusting the seat, which may affect the user experience of the car. Summary of the Invention

[0003] The purpose of this application is to provide a headrest device for a seat, a seat, and a vehicle. The headrest device for the seat can switch between an upright and a horizontal position and has the advantages of simple structure and compact layout.

[0004] To achieve the above objectives, a first aspect of this application provides a headrest device for a seat, the headrest device comprising:

[0005] headrest body;

[0006] The connecting rod assembly includes a first connecting rod and a second connecting rod that are parallel and spaced apart along the width direction of the seat and are both connected to the headrest body;

[0007] The connecting sleeve assembly includes a first connecting sleeve and a second connecting sleeve, wherein the first connecting sleeve is fitted onto the end of the first connecting rod away from the headrest body, and the second connecting sleeve is fitted onto the end of the second connecting rod away from the headrest body.

[0008] A driving component is disposed between the first connecting sleeve and the second connecting sleeve and is used to simultaneously drive the first connecting sleeve and the second connecting sleeve to switch between a first state and a second state.

[0009] In the first state, the headrest body is in an upright state; in the second state, the headrest body is in a horizontal state.

[0010] In embodiments of this application, the headrest device further includes:

[0011] A fixed bracket is installed on the backrest frame of the seat and located between the first connecting sleeve and the second connecting sleeve. The first end of the first connecting sleeve and the first end of the second connecting sleeve are respectively rotatably connected to the fixed bracket on both sides in the width direction of the seat.

[0012] The connecting plate assembly is movably disposed on the outside of the fixed bracket along the length of the seat and is used to drive the first connecting sleeve and the second connecting sleeve to rotate. The driving component is disposed on the fixed bracket and is drivenly connected to the connecting plate assembly.

[0013] In the embodiments of this application, the connecting plate assembly has arc-shaped grooves formed on both sides of the seat in the width direction. The second end of the first connecting sleeve and the second end of the second connecting sleeve respectively extend into the arc-shaped grooves on both sides of the connecting plate assembly in the width direction of the seat and can move along the arc-shaped grooves. The driving component is mounted on the fixed bracket and is drivenly connected to the connecting plate assembly.

[0014] In the embodiments of this application, the connecting plate assembly includes a first connecting plate and a second connecting plate. The first connecting plate and the second connecting plate are respectively located on both sides of the fixed bracket in the width direction of the seat and both have arc-shaped sliding grooves. The fixed bracket has mounting grooves distributed along the length direction of the seat. The side walls on both sides of the mounting grooves have first moving grooves and second moving grooves distributed along the length direction of the seat, respectively. A portion of the drive assembly is disposed in the mounting groove and has a first drive end and a second drive end that can move synchronously. The first drive end passes through the first moving groove and is connected to the first connecting plate, and the second drive end passes through the second moving groove and is connected to the second connecting plate.

[0015] In embodiments of this application, the driving component includes:

[0016] A movable block is set in the mounting slot and can move along the length of the seat;

[0017] The driving component is located at the bottom of the fixed bracket and distributed along the width of the seat. The driving component is connected to the moving block for driving.

[0018] The connecting frame is connected to the movable block. The connecting frame forks at one end near the headrest body to form a first drive end and a second drive end facing the width direction of the seat respectively.

[0019] In the embodiments of this application, both the first connecting sleeve and the second connecting sleeve include a sleeve portion and a connecting portion. The connecting portion is located on one side of the sleeve portion and is rotatably connected to the fixed bracket. An insertion space is formed inside the sleeve portion. The end of the first connecting rod away from the headrest body is inserted into the insertion space on the first connecting sleeve, and the end of the second connecting rod away from the headrest body is inserted into the insertion space on the second connecting sleeve.

[0020] In embodiments of this application, the headrest device further includes a locking element for locking or unlocking the sleeve portion and the connecting rod assembly.

[0021] In the embodiments of this application, the locking member includes a first hook portion, a second hook portion, and a connecting shaft portion. The connecting shaft portion is distributed along the width direction of the seat. The first hook portion and the second hook portion are respectively disposed at the axial ends of the connecting shaft portion. The first end of the first hook portion is rotatably connected to the connecting portion of the first connecting sleeve. The second end of the first hook portion is detachably locked at the end of the first connecting rod away from the headrest body. The first end of the second hook portion is rotatably connected to the connecting portion of the second connecting sleeve. The second end of the second hook portion is detachably locked at the end of the second connecting rod away from the headrest body.

[0022] In an embodiment of this application, a stop portion is formed on the fixed bracket for stopping the connecting shaft portion when the headrest body is in an upright state.

[0023] In embodiments of this application, the headrest device further includes a resilient reset component for resetting the locking element.

[0024] A second aspect of this application provides a seat that includes the headrest device described above for a seat.

[0025] A third aspect of this application provides a vehicle that includes the aforementioned seats.

[0026] As can be seen from the above technical solution, the headrest device includes a headrest body, a connecting rod assembly, a connecting sleeve assembly, and a drive assembly. The connecting rod assembly includes a first connecting rod and a second connecting rod that are parallel and spaced apart along the width direction of the seat and are both connected to the headrest body. The connecting sleeve assembly includes a first connecting sleeve and a second connecting sleeve. The first connecting sleeve is fitted onto the end of the first connecting rod away from the headrest body, and the second connecting sleeve is fitted onto the end of the second connecting rod away from the headrest body. The drive assembly is disposed between the first connecting sleeve and the second connecting sleeve and is used to simultaneously drive the first connecting sleeve and the second connecting sleeve to switch between a first state and a second state. In the first state, the headrest body is in an upright state; in the second state, the headrest body is in a horizontal state. This headrest device for the seat allows the user to adjust the state of the headrest body significantly according to actual usage needs, making the user's field of vision wider, improving the user experience and driving safety of the vehicle, and also has the advantages of reasonable layout, compact structure, saving seat interior space and realizing miniaturization design.

[0027] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0029] Figure 1 This is a schematic diagram of the first overall structure of the headrest device in an embodiment of this application;

[0030] Figure 2 This is a schematic diagram of the headrest device in an embodiment of this application (the connecting sleeve assembly and the connecting plate assembly are in a separated state);

[0031] Figure 3 This is a schematic diagram of the headrest device in an embodiment of this application (the connecting rod assembly and the connecting sleeve assembly are in a separated state);

[0032] Figure 4 This is a partial exploded view of the headrest device in the embodiments of this application;

[0033] Figure 5 This is a schematic diagram of the installation of the headrest device and the seat in the embodiments of this application;

[0034] Figure 6 This is a schematic diagram of the second overall structure of the headrest device in the embodiments of this application;

[0035] Figure 7 for Figure 6 A cross-sectional schematic diagram.

[0036] Explanation of reference numerals in the attached figures

[0037] 1. Headrest body 2. Connecting rod assembly

[0038] 201 First connecting rod 202 Second connecting rod

[0039] 3 Connecting sleeve assembly 301 First connecting sleeve

[0040] 302 First connecting sleeve; 303 Sleeve section

[0041] 304 Connecting part; 305 Insertion space

[0042] 4. Drive Components 401 Drive Components

[0043] 402 Drive connecting rod 403 Connecting bracket

[0044] 5 Connector 501 Mounting Slot

[0045] 502 First moving slot 503 Second moving slot

[0046] 504 stop part, 5041 slot

[0047] 6. Connecting plate assembly 601 Arc-shaped slide groove

[0048] 602 First connecting plate 603 Second connecting plate

[0049] 7 Locking component 701 First hook part

[0050] 702 Second hook part; 703 Connecting shaft part

[0051] 8. Elastic Reset Assembly 801 First Spring

[0052] 802 Second Spring 9 Seat Detailed Implementation

[0053] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0054] Embodiments of this application provide a headrest device for a seat, such as... Figures 1-3 and Figures 5-6 As shown, the headrest device includes:

[0055] Headrest body 1;

[0056] The connecting rod assembly 2 includes a first connecting rod 201 and a second connecting rod 202 that are parallel and spaced apart along the width direction of the seat 9 and are both connected to the headrest body 1;

[0057] The connecting sleeve assembly 3 includes a first connecting sleeve 301 and a second connecting sleeve 302. The first connecting sleeve 301 is sleeved on the end of the first connecting rod 201 away from the headrest body 1, and the second connecting sleeve 302 is sleeved on the end of the second connecting rod 202 away from the headrest body 1.

[0058] The driving component 4 is disposed between the first connecting sleeve 301 and the second connecting sleeve 302 and is used to simultaneously drive the first connecting sleeve 301 and the second connecting sleeve 302 to switch between a first state and a second state.

[0059] In the first state, the headrest body 1 is in an upright state; in the second state, the headrest body 1 is in a horizontal state.

[0060] The seat 9 in this embodiment is suitable for vehicles. The headrest device includes a headrest body 1, a connecting rod assembly 2, a connecting sleeve assembly 3, and a drive assembly 4. The first connecting rod 201 and the second connecting rod 202 are both bent (in this embodiment, the bending angle of the first connecting rod 201 and the second connecting rod 202 can be selected from 80° to 95°). The top ends of the first connecting rod 201 and the second connecting rod 202 are connected to the headrest body 1. The bottom ends of the first connecting rod 201 and the second connecting rod 202 extend into the interior of the seat 9 and are connected to the first connecting sleeve 301 and the second connecting sleeve 302, respectively. That is, the first connecting sleeve 301 and the second connecting sleeve 302 are distributed parallel to each other along the width of the seat 9 inside the seat 9. The drive assembly 4 is located inside the seat 9 and between the first connecting sleeve 301 and the second connecting sleeve 302, which makes the structure of the headrest device more compact, avoids occupying more space inside the seat 9, and is conducive to realizing the miniaturization design of the headrest device and the seat 9. When the drive assembly 4 drives the first connecting sleeve 301 and the second connecting sleeve 302 to move, the first connecting sleeve 301 and the second connecting sleeve 302 then drive the connecting rod assembly 2 and the headrest body 1 to move accordingly. Specifically, when the drive assembly 4 drives the first connecting sleeve 301 and the second connecting sleeve 302 to switch between the first state and the second state, the headrest body 1 correspondingly switches between the upright state and the horizontal state, thus achieving a 90° large-scale rotation of the headrest body 1. Furthermore, when the headrest body 1 is in the upright state, it allows the vehicle user to lean on their head; when the headrest body 1 (such as the headrest body 1 located in the passenger seat) is in the horizontal state, it allows the user sitting inside the vehicle (such as the driver in the driver's seat) to have a wider field of vision, improving the user experience and driving safety. The headrest device for the seat 9 in this embodiment not only allows the user to adjust the state of the headrest body 1 significantly according to actual usage needs, but also has the advantages of reasonable layout, compact structure, saving interior space of the seat 9 and achieving miniaturization design.

[0061] Furthermore, the headrest device in this embodiment can also control the drive component 4 to make the headrest body 1 tilt in any tilt state between a horizontal state and a vertical state, which is beneficial to further expand the application range of the headrest device.

[0062] In one embodiment of this application, such as Figure 4 As shown, the headrest device also includes:

[0063] The fixed bracket 5 is set on the backrest frame of the seat 9 and located between the first connecting sleeve 301 and the second connecting sleeve 302. The first end of the first connecting sleeve 301 and the first end of the second connecting sleeve 302 are respectively rotatably connected to the fixed bracket 5 on both sides in the width direction of the seat 9.

[0064] The connecting plate assembly 6 is movably disposed on the outside of the fixed bracket 5 along the length of the seat 9 and is used to drive the first connecting sleeve 301 and the second connecting sleeve 302 to rotate. The driving assembly 4 is disposed on the fixed bracket 5 and is drivenly connected to the connecting plate assembly 6.

[0065] Specifically, the fixing bracket 5 is located on the side of the backrest frame facing the front of the vehicle and is fixed together with the backrest frame. The first connecting sleeve 301 is rotatably connected to the fixing bracket 5 on one side of the width direction of the seat 9 by a first bolt (such as a stepped bolt). The first bolt is set along the width direction of the seat 9, and the first connecting sleeve 301 can rotate around the first bolt. Similarly, the second connecting sleeve 302 is rotatably connected to the fixing bracket 5 on the other side of the width direction of the seat 9 by a second bolt (such as a stepped bolt). The second bolt is set along the width direction of the seat 9, and the second connecting sleeve 302 can rotate around the second bolt. The connecting plate assembly 6 is disposed on the outside of the fixed bracket 5 and located between the first connecting sleeve 301 and the second connecting sleeve 302. When the driving assembly 4 drives the connecting plate assembly 6 to move along the length direction of the seat 9, the connecting plate assembly 6 applies a rotational driving force to the first connecting sleeve 301 and the second connecting sleeve 302 on both sides of the width direction of the seat 9, so that the first connecting sleeve 301 and the second connecting sleeve 302 rotate around the first bolt and the second bolt, respectively, thereby driving the connecting rod assembly 2 and the headrest body 1 to move, so as to change the tilt angle of the headrest body 1.

[0066] In one embodiment of this application, the connecting plate assembly 6 has arc-shaped grooves 601 formed on both sides of the seat 9 in the width direction. The second end of the first connecting sleeve 301 and the second end of the second connecting sleeve 302 respectively extend into the arc-shaped grooves 601 on both sides of the seat 9 in the width direction and can move along the arc-shaped grooves 601. The driving assembly 4 is mounted on the fixed bracket 5 and is drivenly connected to the connecting plate assembly 6.

[0067] Specifically, the second end of the first connecting sleeve 301 extends into the arc-shaped groove 601 on the first side of the width direction of the connecting plate assembly 6 in the seat 9, and the second end of the second connecting sleeve 302 extends into the arc-shaped groove 601 on the second side of the width direction of the connecting plate assembly 6 in the seat 9; furthermore, in this embodiment, the curvature center of the arc-shaped groove 601 is on the side of the arc-shaped groove 601 close to the headrest body 1, that is, the arc-shaped groove 601 bends away from the headrest body 1. When the drive assembly 4 drives the connecting plate assembly 6 to move along the length of the seat 9, the sidewalls of the two arc-shaped slides 601 apply a pushing force to the second end of the first connecting sleeve 301 and the second end of the second connecting sleeve 302, respectively. The second ends of the first connecting sleeve 301 and the second connecting sleeve 302 move along the arc-shaped slides 601 of the connecting plate assembly 6. At the same time, the first connecting sleeve 301 and the second connecting sleeve 302 rotate around the first bolt and the second bolt, respectively, thereby driving the connecting rod assembly 2 and the headrest body 1 to move, so as to change the tilt angle of the headrest body 1.

[0068] In one embodiment of this application, the connecting plate assembly 6 includes a first connecting plate 602 and a second connecting plate 603. The first connecting plate 602 and the second connecting plate 603 are respectively located on both sides of the fixed bracket 5 in the width direction of the seat 9 and both have arc-shaped sliding grooves 601. The fixed bracket 5 has mounting grooves 501 distributed along the length direction of the seat 9. The side walls on both sides of the mounting groove 501 have first moving grooves 502 and second moving grooves 503 distributed along the length direction of the seat 9, respectively. A portion of the drive assembly 4 is disposed in the mounting groove 501 and has a first drive end and a second drive end that can move synchronously. The first drive end passes through the first moving groove 502 and is connected to the first connecting plate 602, and the second drive end passes through the second moving groove 503 and is connected to the second connecting plate 603.

[0069] Specifically, the first connecting plate 602 is disposed between the fixed bracket 5 and the first connecting sleeve 301, and the second connecting plate 603 is disposed between the fixed bracket 5 and the second connecting sleeve 302. When the drive assembly 4 drives the first connecting plate 602 and the second connecting plate 603, which are respectively connected to the first drive end and the second drive end, to move along the length direction of the seat 9, the sidewalls of the arc-shaped slide grooves 601 on the first connecting plate 602 and the second connecting plate 603 apply a pushing force to the second end of the first connecting sleeve 301 and the second end of the second connecting sleeve 302, respectively. The second end of the first connecting sleeve 301 and the second end of the second connecting sleeve 302 both move along the arc-shaped slide grooves 601 of the connecting plate assembly 6. At the same time, the first connecting sleeve 301 and the second connecting sleeve 302 rotate around the first bolt and the second bolt, respectively. Since some of the drive components 4 are located in the mounting slot 501 and connected from inside the mounting slot 501 to the first connecting plate 602 and the second connecting plate 603 located outside the mounting slot 501 via the first drive end and the second drive end, the above-mentioned structural arrangement makes full use of the internal space of the mounting slot 501 and further enhances the compactness of the layout between the components of the headrest device.

[0070] In one embodiment of this application, such as Figure 4 As shown, the driver component 4 includes:

[0071] A movable block is set in the mounting slot 501 and can move along the length of the seat 9;

[0072] The driving component 401 is disposed at the bottom of the fixed bracket 5 and distributed along the width direction of the seat 9. The driving component 401 is driven to connect with the moving block.

[0073] The connecting frame 403 is connected to the movable block. The connecting frame 403 is forked at one end near the headrest body 1, forming a first drive end and a second drive end facing the fixed bracket 5 on both sides in the width direction of the seat 9.

[0074] Specifically, in this embodiment, the driving component 401 can be a rotary motor connected to the bottom wall of the fixed bracket 5 and distributed along the width direction of the seat 9. This arrangement helps to reduce the overall thickness of the headrest device and the thickness of the seat 9. The driving assembly 4 in this embodiment also includes a driving connecting rod 402. One end of the driving connecting rod 402 is connected to the output end of the driving component 401, and the other end of the driving connecting rod 402 extends into the mounting groove 501 and is distributed along the length direction of the seat 9. The moving block is sleeved on the driving connecting rod 402 and can move along the axial direction of the driving connecting rod 402. Further, the driving connecting rod 402 can be a lead screw, and the moving block (not shown in the figure) can be a threaded block that forms a threaded connection with the lead screw. When the drive component 401 rotates, it drives the drive connecting rod 402 to rotate. The moving block moves along the axial direction of the drive connecting rod 402, and the connecting frame 403 connected to the moving block moves along the length direction of the seat 9. This causes the first connecting plate 602 and the second connecting plate 603 connected to the first drive end and the second drive end to also move along the length direction of the seat 9. Since part of the drive connecting rod 402, the moving block, and the connecting frame 403 are all arranged in the mounting groove 501, and the connecting frame 403 forks at one end near the headrest body 1 to form a first drive end and a second drive end, and connects to the first connecting plate 602 and the second connecting plate 603 located on the outside of the mounting groove 501, the space inside the mounting groove 501 is fully utilized, and the layout compactness between the components of the drive component 401 is improved. Furthermore, the arrangement of the drive component 401 can realize the automatic change of different states of the headrest body 1, reduce labor intensity, and improve the ease of use of the headrest device.

[0075] In one embodiment of this application, the first connecting sleeve 301 and the second connecting sleeve 302 both include a sleeve portion 303 and a connecting portion 304. The connecting portion 304 is located on one side of the sleeve portion 303 and is rotatably connected to the fixed bracket 5. An insertion space 305 is formed inside the sleeve portion 303. The end of the first connecting rod 201 away from the headrest body 1 is inserted into the insertion space 305 on the first connecting sleeve 301, and the end of the second connecting rod 202 away from the headrest body 1 is inserted into the insertion space 305 on the second connecting sleeve 302.

[0076] Specifically, in this embodiment, the connecting portion 304 is stepped. The first end of the first connecting sleeve 301 is formed on the first stepped section of the connecting portion 304 of the first connecting sleeve 301, and the first end of the second connecting sleeve 302 is formed on the first stepped section of the connecting portion 304 of the second connecting sleeve 302. The second stepped sections of the first connecting sleeve 301 and the second connecting sleeve 302 are respectively connected to the sleeve portion 303 of the first connecting sleeve 301 and the second connecting sleeve 302. A sliding column extending into the arc-shaped sliding groove 601 is formed on the side wall of the sleeve portion 303 facing the fixed bracket 5. The second end of the first connecting sleeve 301 is formed on the sliding column of the sleeve portion 303 of the first connecting sleeve 301. The second end of 2 is formed on the sliding column of the sleeve portion 303 of the second connecting sleeve 302. The end of the first connecting rod 201 away from the headrest body 1 is inserted into the sleeve portion 303 of the first connecting sleeve 301. This connection method utilizes the internal space of the sleeve portion 303 of the first connecting sleeve 301. The end of the second connecting rod 202 away from the headrest body 1 is inserted into the sleeve portion 303 of the second connecting sleeve 302. This connection method utilizes the internal space of the sleeve portion 303 of the second connecting sleeve 302. Therefore, the above arrangement is conducive to reducing the overall volume of the first connecting rod 201 and the first connecting sleeve 301, and the overall volume of the second connecting rod 202 and the second connecting sleeve 302.

[0077] In one embodiment of this application, the headrest device further includes a locking member 7 for locking or unlocking the sleeve portion 303 and the connecting rod assembly 2.

[0078] Specifically, the locking member 7 has a locked state and an unlocked state. When the locking member 7 is in the locked state, it tightly locks the first connecting rod 201 and the first connecting sleeve 301, and the second connecting rod 202 and the second connecting sleeve 302 together, preventing the headrest body 1 and the connecting rod assembly 2 from separating from the first connecting sleeve 301 and the second connecting sleeve 302, thus ensuring the reliability of the headrest device. When the locking member 7 is in the unlocked state, the user can disassemble the connecting rod assembly 2 from the first connecting sleeve 301 and the second connecting sleeve 302, thereby enabling the disassembly of the headrest body 1. Furthermore, in this embodiment, the locking member 7 can only be unlocked when the headrest body 1 is in a horizontal state, that is, the headrest body 1 can only be disassembled when it is in a horizontal state.

[0079] In one embodiment of this application, the locking member 7 includes a first hook portion 701, a second hook portion 702, and a connecting shaft portion 703. The connecting shaft portion 703 is distributed along the width direction of the seat 9. The first hook portion 701 and the second hook portion 702 are respectively disposed at the axial ends of the connecting shaft portion 703. The first end of the first hook portion 701 is rotatably connected to the connecting portion 304 of the first connecting sleeve 301. The second end of the first hook portion 701 is detachably locked at the end of the first connecting rod 201 away from the headrest body 1. The first end of the second hook portion 702 is rotatably connected to the connecting portion 304 of the second connecting sleeve 302. The second end of the second hook portion 702 is detachably locked at the end of the second connecting rod 202 away from the headrest body 1.

[0080] Specifically, both the first hook portion 701 and the second hook portion 702 are plate-shaped. The first hook portion 701 is rotatably connected to the second stepped section of the connecting portion 304 of the first connecting sleeve 301 via a third bolt. The second hook portion 702 is rotatably connected to the second stepped section of the connecting portion 304 of the second connecting sleeve 302 via a fourth bolt. The axial ends of the connecting shaft portion 703 are connected to the ends of the first hook portion 701 and the second hook portion 702 away from the second stepped section. Figure 7 As shown, when the first hook portion 701 hooks the end of the first connecting rod 201 away from the headrest body 1, and the second hook portion 702 hooks the end of the second connecting rod 202 away from the headrest body 1, the locking member 7 tightly locks the first connecting rod 201 and the first connecting sleeve 301, and the second connecting rod 202 and the second connecting sleeve 302 together; the user applies force to the connecting shaft portion 703 to make the first hook portion 701 and the second hook portion 702 rotate around the third bolt and the fourth bolt respectively, thereby causing the first hook portion 701 and the second hook portion 702 to disengage from the first connecting rod 201 and the second connecting rod 202, thereby unlocking the connecting rod assembly 2 from the first connecting sleeve 301 and the second connecting sleeve 302.

[0081] In one embodiment of this application, a stop portion 504 is formed on the fixing bracket 5 for stopping the connecting shaft portion 703 when the headrest body 1 is in an upright state.

[0082] Specifically, in this embodiment, the stop portion 504 is located at the end of the fixed bracket 5 away from the driving member 401 and is inclined. The stop portion 504 is arranged at an obtuse angle with the horizontal line. The side of the stop portion 504 near the connecting shaft portion 703 has a stop surface for abutting against the outer peripheral wall of the connecting shaft portion 703 when the headrest body 1 is in an upright state. Under the stopping action of the stop surface, when the headrest body 1 is in an upright state, the connecting shaft portion 703 cannot move in the direction of the stop surface. That is, at this time, the first hook portion 701 and the second hook portion 702 cannot rotate under the drive of the connecting shaft portion 703, so as to prevent the connecting rod assembly 2 from separating from the first connecting sleeve 301 and the second connecting sleeve 302 when the headrest body 1 is in an upright state.

[0083] In one embodiment of this application, the headrest device further includes an elastic reset component 8 for resetting the locking member 7.

[0084] Specifically, the elastic reset assembly 8 includes a first spring 801 and a second spring 802. The first spring 801 is located on the side of the first hook portion 702 away from the fixed bracket 5, and the second spring 802 is located on the side of the second hook portion 702 away from the fixed bracket 5. The first end of the first spring 801 is connected to one end of the connecting shaft portion 703, and the second end of the first spring 801 is connected to the sleeve portion 303 of the first connecting sleeve 301. The first end of the second spring 802 is connected to the other end of the connecting shaft portion 703, and the second end of the first spring 801 is connected to the sleeve portion 303 of the second connecting sleeve 302. When it is necessary to lock the connecting rod assembly 2 with the first connecting sleeve 301 and the second connecting sleeve 302, the user applies a small amount of force to the connecting shaft portion 703, and the locking member 7 can move under the elastic force of the first spring 801 and the second spring 802, thereby quickly locking the connecting rod assembly 2 with the first connecting sleeve 301 and the second connecting sleeve 302, further improving the ease of use of the headrest device.

[0085] In one embodiment of this application, a groove 5041 is formed on the stop portion 504 to prevent the locking member 7 from moving when the locking member 7 is in the unlocked state. The groove 5041 has an upward opening. When the locking member 7 is in the unlocked state, the connecting shaft portion 703 is engaged in the groove 5041. The side wall of the groove 5041 restricts the movement of the connecting shaft portion 703, thereby preventing the locking member 7 from moving under the elastic force of the elastic reset component 8 and relocking the elastic reset component 8, thus ensuring the stability of the unlocked state of the locking member 7.

[0086] Another embodiment of this application provides a seat 9, which includes the headrest device for a seat as described in the above embodiments. The seat 9 in this embodiment has at least the following advantages:

[0087] The seat 9 in this embodiment includes a headrest device for the seat 9. The headrest device includes a headrest body 1, a connecting rod assembly 2, a connecting sleeve assembly 3, and a drive assembly 4. The connecting rod assembly 2 includes a first connecting rod 201 and a second connecting rod 202 that are parallel and spaced apart along the width direction of the seat 9 and are all connected to the headrest body 1. The connecting sleeve assembly 3 includes a first connecting sleeve 301 and a second connecting sleeve 302. The first connecting sleeve 301 is sleeved on the end of the first connecting rod 201 away from the headrest body 1, and the second connecting sleeve 302 is sleeved on the end of the second connecting rod 202 away from the headrest body 1. The drive assembly 4 is disposed on the first connecting sleeve 301, the first connecting sleeve 201, the second connecting rod 202, and the third connecting rod 202. The second connecting sleeve 302 is used to simultaneously drive the first connecting sleeve 301 and the second connecting sleeve 302 to switch between a first state and a second state. In the first state, the headrest body 1 is in an upright state; in the second state, the headrest body 1 is in a horizontal state. This headrest device for the seat 9 allows the user to adjust the state of the headrest body 1 significantly according to actual usage needs, making the user sitting inside the vehicle (such as the driver in the driver's seat) have a wider field of vision, improving the user experience and driving safety of the vehicle. It also has the advantages of reasonable layout, compact structure, saving interior space of the seat 9 and realizing miniaturization design.

[0088] Another embodiment of this application provides a vehicle including the seat 9 in the above embodiments. The vehicle in this embodiment has at least the following advantages:

[0089] The vehicle in this embodiment includes a seat 9, which includes a headrest device for the seat 9. The headrest device includes a headrest body 1, a connecting rod assembly 2, a connecting sleeve assembly 3, and a drive assembly 4. The connecting rod assembly 2 includes a first connecting rod 201 and a second connecting rod 202 that are parallel to and spaced apart along the width direction of the seat 9 and are all connected to the headrest body 1. The connecting sleeve assembly 3 includes a first connecting sleeve 301 and a second connecting sleeve 302. The first connecting sleeve 301 is sleeved on the end of the first connecting rod 201 away from the headrest body 1, and the second connecting sleeve 302 is sleeved on the end of the second connecting rod 202 away from the headrest body 1. The drive assembly 4 is disposed on the first connecting rod 1. The first connecting sleeve 301 and the second connecting sleeve 302 are connected and used to simultaneously drive the first connecting sleeve 301 and the second connecting sleeve 302 to switch between a first state and a second state. In the first state, the headrest body 1 is in an upright state; in the second state, the headrest body 1 is in a horizontal state. This headrest device for the seat 9 allows the user to adjust the state of the headrest body 1 significantly according to actual usage needs, making the user sitting inside the vehicle (such as the driver in the driver's seat) have a wider field of vision, improving the user experience and driving safety of the vehicle. It also has the advantages of reasonable layout, compact structure, saving interior space of the seat 9 and realizing miniaturization design.

[0090] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0091] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0093] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A headrest device for a seat, characterized in that, The headrest device includes: headrest body; The connecting rod assembly includes a first connecting rod and a second connecting rod that are parallel and spaced apart along the width direction of the seat and are both connected to the headrest body; The connecting sleeve assembly includes a first connecting sleeve and a second connecting sleeve, wherein the first connecting sleeve is fitted onto the end of the first connecting rod away from the headrest body, and the second connecting sleeve is fitted onto the end of the second connecting rod away from the headrest body; A driving component is disposed between the first connecting sleeve and the second connecting sleeve and is used to simultaneously drive the first connecting sleeve and the second connecting sleeve to switch between a first state and a second state. In the first state, the headrest body is in an upright state; in the second state, the headrest body is in a horizontal state.

2. The headrest device for a seat according to claim 1, characterized in that, The headrest device also includes: A fixed bracket is disposed on the backrest frame of the seat and located between the first connecting sleeve and the second connecting sleeve. The first end of the first connecting sleeve and the first end of the second connecting sleeve are respectively rotatably connected to the fixed bracket on both sides of the seat in the width direction. A connecting plate assembly is movably disposed on the outside of the fixed bracket along the length direction of the seat and is used to drive the first connecting sleeve and the second connecting sleeve to rotate. The driving assembly is disposed on the fixed bracket and is drivenly connected to the connecting plate assembly.

3. The headrest device for a seat according to claim 2, characterized in that, The connecting plate assembly has arc-shaped grooves on both sides of the seat in the width direction. The second end of the first connecting sleeve and the second end of the second connecting sleeve respectively extend into the arc-shaped grooves on both sides of the seat in the width direction and can move along the arc-shaped grooves. The driving assembly is disposed on the fixed bracket and is drivenly connected to the connecting plate assembly.

4. The headrest device for a seat according to claim 3, characterized in that, The connecting plate assembly includes a first connecting plate and a second connecting plate. The first connecting plate and the second connecting plate are respectively located on both sides of the fixed bracket in the width direction of the seat and each has the arc-shaped sliding groove formed thereon. The fixed bracket has mounting grooves distributed along the length direction of the seat. The side walls on both sides of the mounting grooves have first moving grooves and second moving grooves distributed along the length direction of the seat, respectively. Part of the driving assembly is disposed in the mounting groove and has a first driving end and a second driving end that can move synchronously. The first driving end passes through the first moving groove and is connected to the first connecting plate, and the second driving end passes through the second moving groove and is connected to the second connecting plate.

5. The headrest device for a seat according to claim 4, characterized in that, The driving component includes: A movable block is disposed in the mounting slot and is movable along the length of the seat; A driving component is disposed at the bottom of the fixed bracket and distributed along the width direction of the seat, and the driving component is drivingly connected to the moving block; A connecting frame is connected to the movable block. The connecting frame is forked at one end near the headrest body to form a first drive end and a second drive end facing the width direction of the seat, respectively.

6. The headrest device for a seat according to claim 2, characterized in that, Both the first connecting sleeve and the second connecting sleeve include a sleeve portion and a connecting portion. The connecting portion is located on one side of the sleeve portion and is rotatably connected to the fixed bracket. An insertion space is formed inside the sleeve portion. The end of the first connecting rod away from the headrest body is inserted into the insertion space on the first connecting sleeve, and the end of the second connecting rod away from the headrest body is inserted into the insertion space on the second connecting sleeve.

7. The headrest device for a seat according to claim 6, characterized in that, The headrest device also includes a locking element for locking or unlocking the sleeve portion and the connecting rod assembly.

8. The headrest device for a seat according to claim 7, characterized in that, The locking component includes a first hook portion, a second hook portion, and a connecting shaft portion. The connecting shaft portion is distributed along the width direction of the seat. The first hook portion and the second hook portion are respectively disposed at both axial ends of the connecting shaft portion. The first end of the first hook portion is rotatably connected to the connecting portion of the first connecting sleeve. The second end of the first hook portion is detachably locked at the end of the first connecting rod away from the headrest body. The first end of the second hook portion is rotatably connected to the connecting portion of the second connecting sleeve. The second end of the second hook portion is detachably locked at the end of the second connecting rod away from the headrest body.

9. The headrest device for a seat according to claim 8, characterized in that, The fixed bracket has a stop portion for stopping the connecting shaft portion when the headrest body is in an upright position.

10. The headrest device for a seat according to claim 7, characterized in that, The headrest device also includes a resilient reset component for resetting the locking element.

11. A type of seat, characterized in that, The seat includes a headrest device for the seat according to any one of claims 1-10.

12. A vehicle, characterized in that, The vehicle includes the seat according to claim 11.

Images