Adjusting device for seat backrest side wings, seat and train

Abstract

The invention provides a seat backrest side wing adjusting device, a seat and a train, and the adjusting device comprises a supporting seat which is installed in a seat backrest; the two adjusting mechanisms are slidably mounted on the supporting seat in the width direction of the seat backrest; the two supporting mechanisms are rotatably mounted on the adjusting mechanisms respectively and are suitable for being connected with and supporting part of the elastic cushions in the side wings of the backrest of the seat; the driving mechanism is mounted in the seat backrest, is suitable for driving the two adjusting mechanisms to move oppositely or oppositely in the width direction of the seat backrest, and extends or shortens in the thickness direction of the seat backrest so as to adjust the positions of the two supporting mechanisms and the bending degree of the elastic cushion; and the seat backrest side wings supported by the elastic cushion are changed between a first state in which the seat backrest side wings are laid flat and a second state in which the seat backrest side wings protrude and are gathered.

Description

Technical Field

[0001] The present disclosure relates to the technical field of seats, and more particularly to an adjustment device for side wings of a seat back, a seat, and a train. Background Art

[0002] At present, the seat backs are generally curved, with the left and right wings protruding forward, forming a "C" section in a roughly horizontal plane, to position the waist on both sides of the human body and provide support on both sides, forming an embracing posture, and ensuring the stability and comfort of passengers for long periods of time. These seat backs are usually made of one-time molded foam materials with fixed two side wing shapes.

[0003] However, in the seats equipped in high-end vehicles, although the backrest angle adjustment function allows passengers to lie flat to rest, the fixed high side wings will affect the comfort and body movement range when lying flat, becoming a key factor affecting comfort.

[0004] Therefore, there is an urgent need for a side wing adjustment device that can raise or lower the side wings of the backrest according to the seat posture or the passenger's personal preference, so as to meet the multi-functional requirements of the seat in different usage scenarios and improve riding comfort. Summary of the invention

[0005] In view of this, the present disclosure provides an adjustment device for seat back side wings, a seat and a train, which can adjust the opening and closing degree of the seat back side wings to meet the needs of different passengers and improve comfort.

[0006] One aspect of the present disclosure provides an adjustment device for a seat back wing, which includes a support seat installed in the seat back; two adjustment mechanisms slidably installed on the support seat in the width direction of the seat back; two support mechanisms rotatably installed on the adjustment mechanisms, suitable for connecting and supporting part of the elastic pads in the seat back wing; and a driving mechanism installed in the seat back, suitable for driving the two adjustment mechanisms to move relative to or away from each other in the width direction of the seat back, and to extend or shorten in the thickness direction of the seat back, so as to adjust the positions of the two support mechanisms and the curvature of the elastic pad, so that the seat back wing supported by the elastic pad changes between a first state of being flat and a second state of being raised and gathered.

[0007] According to an embodiment of the present disclosure, each of the above-mentioned adjustment mechanisms includes a movable part, which is slidably installed on the above-mentioned support seat in the width direction of the above-mentioned seat back, and a telescopic part, which is movably mounted on the above-mentioned movable part in the thickness direction of the above-mentioned seat back relative to the above-mentioned movable part, and is suitable for realizing the extension and shortening of the above-mentioned adjustment mechanism.

[0008] According to an embodiment of the present disclosure, the movable portion is provided with a slide groove which is obliquely arranged in the thickness direction and the width direction of the seat back, and the telescopic portion is provided with a slider which cooperates with the slide groove; wherein, when the telescopic portion is displaced in the width direction of the seat back relative to the movable portion, the slider moves in the slide groove driven by the elastic force of the elastic pad, so that the telescopic portion is displaced in the thickness direction of the seat back relative to the movable portion, so as to realize the extension and shortening of the adjustment mechanism.

[0009] According to an embodiment of the present disclosure, the slide grooves and the sliders are provided in a plurality of groups and are spaced apart in a thickness direction of the seat back.

[0010] According to an embodiment of the present disclosure, an inner wall spacing of the telescopic portion in a width direction of the seat back is greater than a width of the moving portion.

[0011] According to an embodiment of the present disclosure, each of the above-mentioned supporting mechanisms includes: a push rod, one end of which is rotatably mounted on the above-mentioned adjusting mechanism; and a support plate, which is rotatably mounted on the other end of the above-mentioned push rod; wherein the above-mentioned support plate is connected to the end of the elastic pad in the side wing of the above-mentioned seat back, and is suitable for supporting the end of the above-mentioned elastic pad, and the above-mentioned support plate rotates relative to the above-mentioned push rod under the drive of the above-mentioned elastic pad and drives the above-mentioned push rod to rotate relative to the above-mentioned adjusting mechanism.

[0012] According to an embodiment of the present disclosure, a limiting portion is provided at a connection between the support plate and the push rod, so that the support plate can rotate within a preset angle relative to the push rod.

[0013] According to an embodiment of the present disclosure, the driving mechanism includes: a screw rod rotatably mounted on the support seat, the screw rod being threadedly connected to the two moving parts so as to convert the rotation of the screw rod into linear movement of the moving parts; and a motor configured to be transmission-connected to the screw rod and suitable for driving the screw rod to rotate.

[0014] According to an embodiment of the present disclosure, the screw rod is a double-thread screw rod, with threads in opposite directions on both sides; and the two adjustment mechanisms are symmetrically mounted on the screw rod.

[0015] According to an embodiment of the present disclosure, it further includes a control mechanism, which is installed on one side of the seat back and is electrically connected to the drive mechanism.

[0016] Another aspect of the present disclosure provides a seat, which includes: a seat back bracket; an elastic pad installed on the above-mentioned seat back bracket and suitable for supporting the back of a human body; and an adjustment device for the above-mentioned seat back side wing, the above-mentioned adjustment device is installed on the seat back bracket and supports the above-mentioned elastic pad.

[0017] Another aspect of the present disclosure provides a train, comprising: a car body; and the above-mentioned seats, wherein the above-mentioned seats are installed in the above-mentioned car body.

[0018] According to an embodiment of the present disclosure, an adjustment device for a seat back wing is provided, comprising a slidable adjustment mechanism, a rotatable support mechanism, and a built-in drive mechanism, which realizes the adjustment of the elastic pad in the seat back wing, so that the adjustment device can not only adjust the position of the elastic pad in the width direction of the seat back, but also expand and contract in the thickness direction, thereby effectively adjusting the bending degree of the elastic pad. In this way, the seat back wing can be transformed from a roughly flat state to a convex and gathered state, greatly enhancing the wrapping and support of the seat back, meeting the personalized needs of different users, and providing appropriate body support in different seat postures, reducing fatigue after long-term riding, thereby improving riding comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0020] Figure 1 is a perspective schematic diagram of a seat back according to an embodiment of the present disclosure;

[0021] Figure 2 is a three-dimensional schematic diagram of an adjustment device according to an embodiment of the present disclosure;

[0022] Figure 3 is a schematic diagram of a first state of adjusting an elastic pad according to an adjustment device of an embodiment of the present disclosure;

[0023] Figure 4 is a schematic diagram of a second state of adjusting the elastic pad by the adjusting device according to an embodiment of the present disclosure;

[0024] Figure 5 is a three-dimensional schematic diagram of a moving part according to an embodiment of the present disclosure;

[0025] Figure 6 is a three-dimensional schematic diagram of a telescopic portion according to an embodiment of the present disclosure;

[0026] Figure 7 is a cross-sectional view of an adjustment mechanism according to an embodiment of the present disclosure in a width direction of a seat back;

[0027] Figure 8 is a three-dimensional schematic diagram of a putter according to an embodiment of the present disclosure;

[0028] Fig. 9 is a perspective schematic diagram of a support plate according to an embodiment of the present disclosure; and

[0029] Fig.10 yes Figure 4 A partial enlarged cross-sectional view of the connection between the support plate and the push rod at A in the middle.

[0030] In the drawings, the meanings of the reference numerals are as follows:

[0031] 100. Adjustment device;

[0032] 1. Support seat;

[0033] 11. Slide rail;

[0034] 2. Adjustment mechanism;

[0035] 21. Mobile unit;

[0036] 211, chute;

[0037] 22. Telescopic part;

[0038] 221. Slippery;

[0039] 222, mounting hole;

[0040] 3. Support mechanism;

[0041] 31. Putting;

[0042] 311, mounting slot;

[0043] 32. Support plate;

[0044] 321, limiter;

[0045] 4. Driving mechanism;

[0046] 41. Screw rod;

[0047] 42. Motor;

[0048] 5. Elastic pads; and

[0049] 6. Seat back support. DETAILED DESCRIPTION

[0050] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0051] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "include", "comprising", etc. used herein indicate the existence of the features, steps, operations and / or mechanisms, but do not exclude the existence or addition of one or more other features, steps, operations or mechanisms.

[0052] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0053] When using expressions such as "at least one of A, B, and C, etc.", they should generally be interpreted according to the meaning of the expression commonly understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0054] Figure 1 It is a perspective schematic diagram of a seat back according to an embodiment of the present disclosure.

[0055] An embodiment of the present disclosure provides a seat back, such as Figure 1 As shown, the seat back support 6 includes a seat back support 6, an elastic pad 5 and an adjustment device 100. The seat back support 6 is mounted on a seat cushion (not shown). The elastic pad 5 is mounted on the seat back support 6 and is suitable for supporting the back of a human body. The two opposite edges of the elastic pad 5 in the seat width direction form seat back side wings protruding forward to provide lateral support for the human body. The adjustment device 100 is mounted on the seat back support 6 and supports the elastic pad 5. The adjustment device 100 is configured to adjust the curvature of the elastic pad 5 and make the two opposite seat back side wings relatively gather or move away.

[0056] Figure 2 is a three-dimensional schematic diagram of an adjustment device according to an embodiment of the present disclosure; Figure 3 is a schematic diagram of a first state of adjusting an elastic pad according to an adjustment device of an embodiment of the present disclosure; Figure 4 It is a schematic diagram of a second state of adjusting the elastic pad by the adjusting device according to an embodiment of the present disclosure.

[0057] The embodiment of the present disclosure provides a seat back wing adjustment device 100, such as Figures 1 to 4As shown, the adjustment device includes a support seat 1, two adjustment mechanisms 2, two support mechanisms 3 and a drive mechanism 4. The support seat 1 is installed in the seat back; the two adjustment mechanisms 2 are slidably installed on the support seat 1 in the width direction of the seat back; the two support mechanisms 3 are rotatably installed on the adjustment mechanisms 2, respectively, and are suitable for connecting and supporting a part of the elastic pad 5, for example, made of foam material, in the side wings of the seat back; the drive mechanism 4 is installed in the seat back, and is suitable for driving the two adjustment mechanisms 2 to move relative to or away from each other in the width direction of the seat back, and to extend or shorten in the thickness direction of the seat back, so as to adjust the positions of the two support mechanisms 3 and the bending degree of the elastic pad 5, so that the side wings of the seat back supported by the elastic pad 5 change between a first state of being flat and a second state of being raised and gathered.

[0058] According to the above-mentioned setting method, the seat back side wing adjustment device provided in this embodiment adjusts the curvature of the elastic pad 5 in the seat back side wing through the cooperation of the support seat 1, the slidable adjustment mechanism 2, the rotatable support mechanism 3 and the driving mechanism 4, so that the seat back side wing can be flexibly switched between a first flat state and a second raised and gathered state, thereby significantly improving the comfort, adaptability and ergonomic performance of the seat, effectively reducing fatigue during driving, enhancing riding safety, and providing users with a more personalized and high-quality riding experience.

[0059] In detail, since the elastic pad 5 in the seat back is made of foam material and has a certain elasticity and rigidity, when the curvature of the elastic pad 5 changes, for example Figure 3 and Figure 4 As shown, during the bending process, the two ends of the elastic pad 5 are relatively close to each other in the width direction of the seat back and are also raised in the thickness direction of the seat. Therefore, during the relative movement of the two adjustment mechanisms 2 in the width direction of the seat back, they are also extended in the thickness direction of the seat back, so that the position changes of the two support mechanisms 3 can match the bending changes of the two opposite ends of the elastic pad 5 in the side wings of the seat back. At the same time, the support mechanism 3 rotates with the elastic pad 5 to always maintain planar support for the elastic pad 5, thereby avoiding strain on the elastic pad 5 due to uncoordinated force during the bending process.

[0060] Furthermore, based on the bending change of the elastic pad 5, its two ends in the seat width direction bulge in the seat thickness direction, so that the seat back wings formed at both ends of the elastic pad 5 or the supported back wings can be adjusted between the first state and the second state.

[0061] Figure 5 is a three-dimensional schematic diagram of a moving part according to an embodiment of the present disclosure; Figure 6 It is a three-dimensional schematic diagram of the telescopic part according to an embodiment of the present disclosure.

[0062] In an illustrative embodiment, Figures 2 to 6 As shown, each adjustment mechanism 2 includes a movable part 21 and a telescopic part 22, wherein the movable part 21 is slidably mounted on the support seat 1 in the width direction of the seat back, and the telescopic part 22 is movably mounted on the movable part 21 relative to the movable part 21 in the thickness direction of the seat back, and is suitable for realizing the extension and shortening of the adjustment mechanism 2.

[0063] In an illustrative embodiment, the supporting mechanism 3 is rotatably mounted on the telescopic portion 22 .

[0064] According to the above-mentioned setting mode, through the combined design of the movable part 21 sliding in the width direction of the seat back and the telescopic part 22 telescoping in the thickness direction of the seat back, the adjustment mechanism 2 can accurately control the position of the support mechanism 3, further realizing the flexible adjustment of the side wings of the seat back between the first state and the second state, and can adjust the spacing of the side wings in the width direction and the protrusion of the side wings in the thickness direction, thereby providing support adjustment for the side wings and enhancing the adaptability and comfort of the seat. Furthermore, the movement of the telescopic part 22 in the thickness direction relative to the movable part 21 can accommodate the bending of the elastic pad 5 and avoid wrinkling in the width direction when the elastic pad 5 is bent.

[0065] Figure 7 is a cross-sectional view of an adjustment mechanism according to an embodiment of the present disclosure in a seat back width direction.

[0066] In an illustrative embodiment, Figures 5 to 7 As shown, the moving part 21 is provided with a slide groove 211 which is arranged obliquely in the thickness direction and the width direction of the seat back, and the telescopic part 22 is provided with a slider 221 which cooperates with the slide groove 211. When the telescopic part 22 is displaced in the width direction of the seat back relative to the moving part 21, the elastic force of the elastic pad 5 drives the slider 221 to move in the slide groove 211, so that the telescopic part 22 is displaced in the thickness direction of the seat back relative to the moving part 21, so as to realize the extension and shortening of the adjustment mechanism 2.

[0067] According to the above arrangement, the inclined slide groove 211 and the slider 221 matched therewith enable the displacement of the telescopic portion 22 on the moving portion 21 to be converted into telescopic movement in the thickness direction of the seat back.

[0068] In detail, when the moving part 21 moves in the width direction of the seat, since the elastic pad 5 is connected to the support mechanism 3, and the support mechanism 3 is rotatably installed on the telescopic part 22, the elastic force of the elastic pad 5 can drive the slider 221 on the telescopic part 22 to move in the slide groove 211 on the moving part 21, so that the telescopic part 22 can move along the slide groove 211 relative to the moving part 21, so that the adjustment mechanism 2 automatically extends or shortens in the thickness direction while displacing in the width direction, thereby simplifying the adjustment process and improving the adjustment efficiency. The seat back can automatically adjust the support according to the user's body shape and sitting posture requirements, significantly improving the comfort and adaptability of the seat, and bringing a more fitting and supportive riding experience to the user.

[0069] In an illustrative embodiment, Figures 5 to 7 As shown, there are multiple groups of slide grooves 211 and sliders 221, which are arranged at intervals in the thickness direction of the seat back.

[0070] According to the above-mentioned arrangement, by providing multiple groups of inclined slide grooves 211 on the moving part 21, and correspondingly providing multiple groups of sliders 221 on the telescopic part 22, the telescopic part 22 is stably mounted on the moving part 21, and the telescopic part 22 is prevented from rotating around the sliders 221. The cooperation of the multiple groups of slide grooves 211 and the sliders 221 not only provides a stable motion path, but also limits other displacement changes of the telescopic part 22, thereby ensuring the accuracy and reliability of the adjustment mechanism 2 during the telescopic process.

[0071] In an illustrative embodiment, Figure 5 As shown, the slide groove 211 is configured to be a curved shape that matches the displacement of the telescopic portion 22 with the position change of the end of the elastic pad 5 .

[0072] In an illustrative embodiment, Figure 3 and Figure 4 As shown, the inner wall spacing of the telescopic portion 22 in the width direction of the seat back is greater than the width of the moving portion 21 .

[0073] According to the above-mentioned arrangement, the telescopic part 22 mounted on the movable part 21 is moved relative to the movable part 21 in the width direction of the seat back, and at the same time, the abutment between the inner wall and the outer wall of the movable part 21 is utilized to limit the range of movement of the telescopic part 22 relative to the movable part 21 in the width direction of the seat back, that is, the range of movement of the slider 221 in the slide groove 211.

[0074] In an illustrative embodiment, Figure 7 As shown, a slide rail 11 extending in the width direction of the seat is provided on the support seat 1 , and the moving part 21 is slidably mounted on the slide rail 11 .

[0075] Furthermore, grooves extending in the width direction of the seat back are provided on both sides of the slide rail 11 , and protrusions matching the shape of the grooves are provided on the moving portion 21 .

[0076] According to the above arrangement, through the cooperation between the slide rail 11 and the groove and the protrusion, the movable part 21 is stably and slidably mounted on the slide rail 11, and will not move or rotate in directions other than the seat width direction.

[0077] Figure 8 is a three-dimensional schematic diagram of a putter according to an embodiment of the present disclosure; Fig. 9 It is a three-dimensional schematic diagram of a support plate according to an embodiment of the present disclosure.

[0078] In an illustrative embodiment, Figures 2 to 4 , Figure 8 and Fig. 9 As shown, each support mechanism 3 includes a push rod 31, one end of which is rotatably mounted on the adjustment mechanism 2; and a support plate 32, which is rotatably mounted on the other end of the push rod 31; wherein the support plate 32 is connected to the end of the elastic pad 5 in the side wing of the seat back, and is suitable for supporting the end plane of the elastic pad 5. The support plate 32 rotates relative to the push rod 31 under the drive of the elastic pad 5 and drives the push rod 31 to rotate relative to the adjustment mechanism 2.

[0079] According to the above-mentioned setting method, the support mechanism 3 composed of the push rod 31 and the support plate 32 is adopted, so that the support plate 32 can rotate relative to the push rod 31 under the drive of the elastic pad 5, and then drive the push rod 31 to rotate relative to the adjustment mechanism 2. Through the coordinated rotation of the push rod 31 and the support plate 32, flexible support and adjustment of the end of the elastic pad 5 is achieved, so that the side wings of the seat back can be dynamically adjusted according to the user's body and sitting posture requirements.

[0080] Furthermore, the double rotation connection between the support plate 32 and the push rod 31 and between the push rod 31 and the adjustment mechanism 2 increases the overall degree of freedom between the support mechanism 3 and the adjustment mechanism 2, so that the position changes of the two in the width and thickness directions of the seat back are more matched with the bending changes of the elastic pad 5, so as to adjust and support the elastic pad 5 with any degree of bending, thereby increasing the stability of the side wings of the seat back.

[0081] Fig.10 yes Figure 4 A partial enlarged cross-sectional view of the connection between the support plate and the push rod at A in the middle.

[0082] In an illustrative embodiment, Figures 7 to 10 As shown, a limiting portion 321 is provided at the connection between the support plate 32 and the push rod 31 , so that the support plate 32 can rotate within a preset angle relative to the push rod 31 .

[0083] Detailed, such as Figures 7 to 10 As shown, the push rod 31 is provided with a mounting groove 311 suitable for mounting the support plate 32 , wherein the notch of the mounting groove 311 also cooperates with the limiting portion 321 , suitable for limiting the rotation range of the support plate 32 relative to the push rod 31 .

[0084] In an illustrative embodiment, the support plate 32 and the push rod 31 and the push rod 31 and the adjustment mechanism 2 are respectively hinged via pivots.

[0085] In an illustrative embodiment, Figures 2 to 4 As shown, the driving mechanism 4 includes a screw rod 41 and a motor 42; the screw rod 41 is rotatably mounted on the support seat 1, and the screw rod 41 is threadedly connected to the two moving parts 21 to convert the rotation of the screw rod 41 into the linear movement of the moving parts 21; the motor 42 is constructed to be transmission-connected with the screw rod 41, and is suitable for driving the screw rod 41 to rotate.

[0086] According to the above-mentioned setting method, the screw rod 41 is rotatably installed on the support seat 1 and is threadedly connected to the two moving parts 21. The motor 42 is transmission-connected to the screw rod 41 to drive the screw rod 41 to rotate. The rotational motion of the screw rod 41 is converted into linear movement of the moving part 21 through the threaded connection, thereby realizing precise control of the adjustment mechanism 2 in the width direction of the seat back.

[0087] In an illustrative embodiment, Figure 2 As shown, the screw rod 41 is a double-thread screw rod with threads on both sides in opposite directions; wherein, the two adjustment mechanisms 2 are symmetrically mounted on the screw rod 41 .

[0088] According to the above-mentioned setting method, when the motor 42 drives the screw 41 to rotate, the two adjustment mechanisms 2 can move in opposite directions at the same time to realize the synchronous adjustment of the side wings of the seat back. The symmetrical configuration of the double-threaded screw not only simplifies the structure of the driving mechanism 4, but also ensures the precise and synchronous movement of the adjustment mechanism 2 in the width direction, thereby adjusting the side wings of the seat back at the same time and ensuring the symmetry of the side wing adjustment.

[0089] In an illustrative embodiment, Figure 6 As shown, the telescopic portion 22 is provided with mounting holes 222 for the screw rod 41 to pass through on both sides in the seat width direction.

[0090] In an illustrative embodiment, Figure 6 As shown, the mounting hole 22 extends in the thickness direction of the seat.

[0091] In an illustrative embodiment, a control mechanism is further included, which is installed on one side of the seat back and is electrically connected to the drive mechanism 4 .

[0092] According to the above arrangement, the user can directly operate the driving mechanism 4 through the control mechanism, thereby realizing precise control of the adjustment of the seat back wing, so that the user can easily adjust the position and shape of the seat back wing, meeting the personalized comfort needs.

[0093] Another embodiment of the present disclosure provides a seat, such as Figure 1 As shown, it includes: a seat back bracket 6, an elastic pad 5 and an adjusting device 100, the elastic pad 5 is installed on the seat back bracket 6, and is suitable for supporting the back of a human body; the adjusting device 100 of the seat back side wing is installed on the seat back bracket 6 and supports the elastic pad 5.

[0094] According to the above arrangement, the adjustment device 100 is integrated into the seat design so that the seat back wings can be adjusted according to the user's body shape and preferences, thereby providing a more personalized back support. This not only improves the comfort and adaptability of the seat, but also enhances the functionality and ergonomic design of the seat, allowing the user to maintain a good posture during long-term riding, reducing back fatigue and improving the overall riding experience.

[0095] Another embodiment of the present disclosure further provides a train, comprising: a vehicle body; and the above-mentioned seat, the seat being installed in the vehicle body. The train may include a high-speed train, a regular train, or an urban rail vehicle. The seat of the embodiment of the present disclosure may also be applied to travel vehicles such as buses and airplanes.

[0096] It will be appreciated by those skilled in the art that the features described in the various embodiments of the present disclosure may be combined and / or combined in a variety of ways, even if such combinations or combinations are not explicitly described in the present disclosure. In particular, without departing from the spirit and teachings of the present disclosure, the features described in the various embodiments of the present disclosure may be combined and / or combined in a variety of ways. All of these combinations and / or combinations fall within the scope of the present disclosure.

[0097] The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes and are not intended to limit the scope of the present disclosure. Although the embodiments are described above, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. Without departing from the scope of the present disclosure, those skilled in the art may make a variety of substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. An adjustment device for the side wings of a seat back, It is characterized in that include: A support seat (1) is installed in the seat back; Two adjustment mechanisms (2) are slidably mounted on the support seat (1) in the width direction of the seat back; Two supporting mechanisms (3) are respectively rotatably mounted on the adjusting mechanism (2) and are suitable for connecting and supporting a part of the elastic pad (5) in the side wings of the seat back; and A drive mechanism (4) is installed in the seat back and is suitable for driving the two adjustment mechanisms (2) to move relative to or away from each other in the width direction of the seat back and to extend or shorten in the thickness direction of the seat back, so as to adjust the positions of the two support mechanisms (3) and the curvature of the elastic pad (5), so that the side wings of the seat back supported by the elastic pad (5) change between a first state of being flat and a second state of being raised and gathered.

2. The adjustment device according to claim 1, It is characterized in that Each of the adjustment mechanisms (2) comprises: a moving part (21) slidably mounted on the support seat (1) in the width direction of the seat back, and The telescopic portion (22) is movably sleeved on the movable portion (21) relative to the movable portion in the thickness direction of the seat back, and is suitable for realizing the extension and contraction of the adjustment mechanism (2).

3. The adjustment device according to claim 2, It is characterized in that The movable portion (21) is provided with a slide groove (211) arranged obliquely in the thickness direction and the width direction of the seat back, and the telescopic portion (22) is provided with a slider (221) cooperating with the slide groove (211); When the telescopic portion (22) is displaced relative to the movable portion (21) in the width direction of the seat back, the slider (221) is driven by the elastic force of the elastic pad (5) to move in the slide groove (211), so that the telescopic portion (22) is displaced relative to the movable portion (21) in the thickness direction of the seat back, thereby achieving the extension and shortening of the adjustment mechanism (2).

4. The adjustment device according to claim 3, It is characterized in that The slide grooves (211) and the slide heads (221) are provided in multiple groups and are arranged at intervals in the thickness direction of the seat back.

5. The adjustment device according to claim 4, It is characterized in that The inner wall spacing of the telescopic portion (22) in the width direction of the seat back is greater than the width of the moving portion (21).

6. The adjustment device according to claim 1, It is characterized in that Each of the supporting mechanisms (3) comprises: a push rod (31), one end of which is rotatably mounted on the adjustment mechanism (2); and A support plate (32) rotatably mounted on the other end of the push rod (2); The support plate (32) is connected to the end of the elastic pad (5) in the side wing of the seat back and is suitable for supporting the end of the elastic pad (5). Driven by the elastic pad (5), the support plate (32) rotates relative to the push rod (31) and drives the push rod (31) to rotate relative to the adjustment mechanism (2).

7. The adjustment device according to claim 6, It is characterized in that A limiting portion (321) is provided at the connection between the support plate (32) and the push rod (31), so that the support plate (32) can rotate within a preset angle relative to the push rod (31).

8. The adjustment device according to claim 2, It is characterized in that The driving mechanism (4) comprises: a screw rod (41) rotatably mounted on the support seat (5), the screw rod (41) being threadedly connected to the two moving parts (21) so as to convert the rotation of the screw rod (41) into linear movement of the moving parts (21); and The motor (42) is configured to be in driving connection with the screw rod (41) and is suitable for driving the screw rod (41) to rotate.

9. The adjustment device according to claim 8, It is characterized in that The screw rod (41) is a double-thread screw rod, with threads on both sides in opposite directions; The two adjustment mechanisms (2) are symmetrically mounted on the screw rod (41).

10. The adjustment device according to claim 8, It is characterized in that It also includes a control mechanism, which is installed on one side of the seat back and is electrically connected to the drive mechanism.

11. A seat, It is characterized in that include: Seat back support (6); An elastic pad (5) mounted on the seat back support and suitable for supporting the back of a human body; as well as An adjustment device for a seat back wing as claimed in any one of claims 1 to 10, wherein the adjustment device is mounted on a seat back bracket (6) and supports the elastic pad (5).

12. A train, It is characterized in that include: Vehicle body; as well as The seat as claimed in claim 11, wherein the seat is installed in the vehicle body.

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