Headrest device

Abstract

The present invention may provide a headrest device comprising: a front frame for supporting a headrest part; a rear frame, at least a part of which is connected to the front frame, and which is provided so as to be spaced apart from the front frame; the wing frames are connected to the front frame through hinge shafts, arranged on the two sides of the front frame and folded with the hinge shafts as the centers; an elastic member coupled to the hinge shaft and configured to elastically support the wing frame; and an airbag provided between the rear frame and the wing frame, the airbag being inflated by air injection and pressing the wing frame to fold the wing frame.

Description

Technical Field

[0001] The present invention relates to a headrest device mounted on a vehicle. Background Art

[0002] Generally, a vehicle seat may include: a seat back for supporting the upper body of a passenger; a seat cushion for supporting the lower body such as the buttocks and thighs; and a headrest for supporting the headrest part.

[0003] The headrest can move forward or backward to fit the headrest part of the passenger in the vehicle. The headrest can move back and forth through a sliding device.

[0004] The headrest may include: a front frame for supporting the headrest part of the passenger; a rear frame spaced apart from the front frame; and wing frames provided on both sides of the front frame.

[0005] The wing frames can be connected to the front frame and a hinge shaft. The wing frames can be folded about the hinge shaft in the deployed state. The wing frames are folded about the hinge shaft, whereby the two sides of the head of the vehicle passenger can be comfortably and freely wrapped. By wrapping the two sides of the head, the wing frames can provide a sense of stability and comfort to the vehicle passenger.

[0006] However, the existing headrest is not only inconvenient to adjust the angle of the wing frames, but also unable to make a delicate adjustment to the angle of the wing frames.

[0007] Prior Art Documents

[0008] Patent Documents

[0009] (Patent Document 1) Korean Patent Publication No. 10-2015-0077502 (published on July 8, 2015) Summary of the Invention

[0010] To solve the above problems, the present invention provides a headrest device that presses the wing frames by inflating an airbag with air to fold the folded wing frames, or unfolds the wing frames to their original state by discharging air from the airbag.

[0011] To achieve the above object, the present invention provides a headrest device including: a front frame for supporting the headrest part; a rear frame at least partially connected to the front frame and arranged to be spaced apart from the front frame; wing frames connected to the front frame through a hinge shaft, provided on both sides of the front frame, and folded about the hinge shaft; an elastic member coupled to the hinge shaft for elastically supporting the wing frames; and an airbag provided between the rear frame and the wing frames, which inflates by air injection and presses the wing frames to fold the wing frames at the same time.

[0012] Furthermore, a connection part may be provided on one side of the airbag, and the connection part is connected to a hinge shaft.

[0013] Furthermore, air may be injected into the airbag through an air injection device.

[0014] Furthermore, the air injection device may include: a first hose for supplying air; a second hose connected to the first hose and connected to the airbag located on one side of the rear frame; and a third hose connected to the first hose and connected to the airbag located on the other side of the rear frame.

[0015] Furthermore, the air injection device may further include a connecting pipe for connecting the first hose, the second hose, and the third hose.

[0016] Furthermore, the connecting pipe may be configured in a "T" shape so as to be connected to a three-way hose of the first hose, the second hose, and the third hose.

[0017] Furthermore, the connecting pipe may include: a first connection part connected to the first hose; a second connection part connected to the second hose; and a third connection part connected to the third hose.

[0018] Furthermore, the first connection part may be formed of a corrugated part at least a part of which is telescopic.

[0019] Furthermore, a pneumatic control valve may be installed on the first hose.

[0020] Furthermore, the pneumatic control valve may be opened when injecting and discharging air into the airbag, and closed when the air injection into the airbag is completed.

[0021] Advantageous Effects of the Invention

[0022] In the present invention, the wing frame can be pressed by inflating the airbag by injecting air to fold the wing frame, or the wing frame can be unfolded to its original state by discharging air from the airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of a headrest device according to a preferred embodiment of the present invention.

[0024] Figure 2 is a top view of the wing frame of the headrest device according to a preferred embodiment of the present invention in a folded state.

[0025] Figure 3 is Figure 1 an enlarged view of part A in , showing the inflated state of the airbag.

[0026] Figure 4is a view showing Figure 3 the contracted state of the airbag.

[0027] Figure 5 is Figure 1 an enlarged view of part B in

[0028] Figure 6 is a view showing Figure 5 the contracted state of the corrugated part.

[0029] In the figure:

[0030] 10: front frame, 20: rear frame, 30: wing frame, 40: airbag, 41: connecting part, 50: air injection device, 51: first hose, 52: second hose, 53: third hose, 54: connecting pipe, 541: first connecting part, 541a: corrugated part, 542: second connecting part, 543: third connecting part, H: hinge shaft, S: elastic member, V: pneumatic control valve Detailed Description of the Preferred Embodiment

[0031] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that when labeling reference numerals for the components of each drawing, the same reference numerals are preferably used for the same components even in different drawings. In addition, when describing the present invention, if it is determined that the specific description of related well-known structures or functions will make the gist of the present invention unclear, the detailed description thereof will be omitted. In addition, although the preferred embodiments of the present invention will be described below, the technical idea of the present invention is not limited to or restricted thereto, but can be variously modified and implemented by those of ordinary skill in the art.

[0032] Figure 1 is a perspective view of a headrest device according to a preferred embodiment of the present invention, Figure 2 is a top view of the wing frame of the headrest device according to a preferred embodiment of the present invention in a folded state, Figure 3 is Figure 1 an enlarged view of part A in

[0033] As Figures 1 to 3 shown, the present invention may include: a front frame 10; a rear frame 20, disposed at an interval from the front frame 10; wing frames 30, disposed on both sides of the front frame 10; an elastic member S for elastically supporting the wing frames 30; and an airbag 40 that presses the wing frames 30 by injecting air and expanding.

[0034] The front frame 10 is disposed on the upper part of a vehicle seat (not shown) and can support the headrest part of a vehicle passenger.

[0035] The rear frame 20 can be configured to be connected to at least a part of the front frame 10. The rear frame 20 can be arranged to be spaced apart from the front frame 10.

[0036] The wing frames 30 can be arranged on the left and right sides of the front frame 10. The wing frames 30 can be connected to the front frame 10 via hinge shafts H. The wing frames 30 can be folded about the hinge shafts H.

[0037] The elastic member S can be coupled to the hinge shaft H. The elastic member S can elastically support the wing frames 30. For example, the elastic member S can be a torsion spring.

[0038] The airbag 40 can be located between the rear frame 20 and the wing frames 30. Air can be injected into the interior of the airbag 40. When air is injected into the interior of the airbag 40, the airbag 40 can expand. When the airbag 40 expands and presses against the wing frames 30, the wing frames 30 can be folded. When the wing frames 30 are folded, the two sides of the vehicle passenger's head can be stably supported.

[0039] The airbag 40 can include a connection part 41. The connection part 41 can extend from one side of the airbag 40 and be connected to the hinge shaft H.

[0040] The shape of the airbag 40 is not limited. Any shape that can be inflated can be used for the airbag 40. For example, the airbag 40 can be formed in a circular shape.

[0041] Figure 4 is a diagram showing Figure 3 the contracted state of the airbag.

[0042] As Figure 4 shown, when the air inside the airbag 40 is discharged, the airbag 40 contracts to its original state, and at the same time, the force pressing against the wing frames 30 disappears, whereby the wing frames 30 can be unfolded to their original state.

[0043] Figure 5 is Figure 1 an enlarged view of part B in

[0044] As Figure 1 and 5 shown, air can be injected into the interior of the airbag 40 through the air injection device 50.

[0045] The air injection device 50 can include a first hose 51, a second hose 52, a third hose 53, and a connecting pipe 54.

[0046] Air can be supplied to the first hose 51. The air supplied to the first hose 51 can be supplied to both sides of the second hose 52 and the third hose 53.

[0047] The air supplied to the second hose 52 can be supplied to the inside of the side airbag 40 provided between one side of the rear frame 20 and one side wing frame 30.

[0048] The air supplied to the third hose 53 can be supplied to the inside of the other side airbag 40 provided between the other side of the rear frame 20 and the other side wing frame 30.

[0049] One end of the second hose 52 can be connected to the first hose 51. The other end of the second hose 52 can be connected to the side airbag 40.

[0050] One end of the third hose 53 can be connected to the first hose 51. The other end 53 of the third hose 53 can be connected to the other side airbag 40.

[0051] The first hose 51, the second hose 52, and the third hose 53 can be connected by a connecting pipe 54.

[0052] The connecting pipe 54 can be configured in a "T" shape so as to be connected to a three-way hose such as the first hose 51, the second hose 52, and the third hose 53.

[0053] The connecting pipe 54 can include a first connecting portion 541, a second connecting portion 542, and a third connecting portion 543. The first connecting portion 541 can be connected to the first hose 51. The second connecting portion 542 can be connected to the second hose 52. The third connecting portion 543 can be connected to the third hose 53.

[0054] The first connecting portion 541 can be formed by at least a partially telescopic corrugated portion 541a.

[0055] When the headrest of the present invention moves forward by a sliding device (not shown) having a known structure, the corrugated portion 541a of the first connecting portion 541 can be elongated.

[0056] Figure 6 It shows Figure 5 a diagram of the reduced state of the corrugated portion.

[0057] As Figure 6 shown, when the headrest of the present invention moves backward by a sliding device (not shown) having a known structure, the corrugated portion 541a of the first connecting portion 541 can be reduced to its original state.

[0058] Thus, the corrugated portion 541a of the first connecting portion 541 has a telescopic and freely bendable structure, and thus, problems such as damage due to the bending of the first hose 51 can be prevented.

[0059] As an example, a pneumatic control valve V can be installed in the first hose 51. For example, the pneumatic control valve V can be a solenoid valve capable of controlling the flow of air pressure.

[0060] When air is injected into the airbag 40, the pneumatic control valve V can be opened. When the pneumatic control valve V is opened, air can be injected into the interior of the airbag 40 through the first hose 51, the second hose 52, and the third hose 53.

[0061] When the air injection into the airbag 40 is complete, the pneumatic control valve V can be closed.

[0062] When the air inside the airbag 40 is discharged, the pneumatic control valve V can be opened. When the pneumatic control valve V is opened, the air inside the airbag 40 can be discharged from the first hose 51 through the second hose 52 and the third hose 53.

[0063] Next, the folding operation of the wing frame of the present invention will be described.

[0064] As Figures 1 to 3 shown, when an air supply switch (not shown) is operated, air can be supplied to the first hose 51.

[0065] The air supplied to the first hose 51 can be supplied to the airbags 40 on both sides through the second hose 52 and the third hose 53.

[0066] When air is supplied to the interior of the airbag 40, the airbag 40 can expand.

[0067] The degree of expansion of the airbag 40 can be adjusted by adjusting the air injection amount. By adjusting the degree of expansion of the airbag 40, the folding degree of the wing frame 30 can be finely adjusted.

[0068] When the airbag 40 expands, the wing frame 30 can be pressed. The wing frame 30 can be folded around the hinge axis H by pressing the airbag 40.

[0069] When the wing frame 30 is folded, the elastic member S that elastically supports the wing frame 30 can be compressed.

[0070] When the wing frame 30 is folded to the desired state, the operation of the air supply switch (not shown) can be stopped to prevent air supply to the interior of the airbag 40.

[0071] The wing frame 30 can stably support both sides of the head of a vehicle passenger in the folded state.

[0072] As Figure 4 shown, when it is necessary to release the folded state of the wing frame 30, the air in the airbag 40 can be discharged by operating an exhaust switch (not shown).

[0073] When air is discharged from the inside of the airbag 40, the airbag 40 can contract to its original state.

[0074] When the force pressing the wing frame 30 disappears while the airbag 40 is being contracted, the compressed elastic member S extends to its original state, and thus, the wing frame 30 can be expanded to its original state.

[0075] The above description is only used to exemplarily illustrate the technical spirit of the present invention, and those of ordinary skill in the art to which the present invention pertains can make various modifications, changes, and substitutions without departing from the essential features of the present invention. Therefore, the embodiments and drawings disclosed in the present invention are not intended to limit but to illustrate the technical spirit of the present invention, and the scope of the technical spirit of the present invention should not be limited by the above embodiments and drawings. The protection scope of the present invention should be interpreted by the scope of the appended claims, and it should be interpreted that all technical ideas within the equivalent scope should be included in the scope of the claims of the present invention.

Claims

1. A headrest device, characterized in that: include: A front frame for supporting a headrest portion; a rear frame, at least a portion of which is connected to the front frame and is arranged to be spaced apart from the front frame; The wing frames are connected to the front frame via hinge shafts, are arranged on both sides of the front frame, and are folded around the hinge shafts; an elastic member, combined with the hinge shaft, for elastically supporting the wing frame; as well as The airbag is arranged between the rear frame and the wing frame, and is inflated by air injection, while pressing the wing frame to fold the wing frame.

2. The headrest device according to claim 1, characterized in that: A connection portion is provided on one side of the airbag, and the connection portion is connected to the hinge shaft.

3. The headrest device according to claim 1, characterized in that: Air is injected into the airbag through an air injection device.

4. The headrest device according to claim 3, characterized in that: The air injection device comprises: a first hose for supplying air; a second hose connected to the first hose and connected to the air bag located at one side of the rear frame; and A third hose is connected to the first hose and is connected to the airbag located at the other side of the rear frame.

5. The headrest device according to claim 4, characterized in that: The air injection device further includes a connecting pipe for connecting the first hose, the second hose and the third hose.

6. The headrest device according to claim 5, characterized in that: The connecting pipe is configured in a “T” shape so as to be connectable to a three-way hose including the first hose, the second hose, and the third hose.

7. The headrest device according to claim 5, characterized in that: The connecting pipe comprises: A first connecting portion connected to the first hose; A second connecting portion connected to the second hose; and The third connecting portion is connected to the third hose.

8. The headrest device according to claim 7, characterized in that: The first connection portion is formed by at least a portion of a retractable corrugated portion.

9. The headrest device according to claim 4, characterized in that: A pneumatic control valve is installed on the first hose.

10. The headrest device according to claim 9, characterized in that: The pneumatic control valve is opened when air is injected into and discharged from the airbag, and is closed when the injection of air into the airbag is completed.

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