Adjustable side wing seat back

Abstract

An adjustable side-wing seat backrest relates to the field of seat backrests. The adjustable side-wing seat backrest includes a backrest body, a headrest heightably connected to the top of the backrest body, and two side wings movably connected to both sides of the backrest body. The inner wall of the backrest body has a pair of L-shaped first backrest grooves, and the bottom of the headrest has a pair of L-shaped first headrest grooves. Each side wing is connected to an L-shaped first slider, the top and bottom of which are slidably disposed within the two first headrest grooves and the two first backrest grooves, respectively. When the headrest is raised or lowered, it drives the two first backrest grooves and the two first headrest grooves to move the two first sliders, causing the two side wings to first move away from each other and then simultaneously rise or move back to their original position while moving away from each other. The adjustable side-wing seat backrest can simultaneously adjust the position and height of the two side wings when adjusting the headrest height, thus providing better protection for the user's head and body.

Description

Technical Field

[0001] This application relates to the field of seat backrests, and more specifically, to a seat backrest with adjustable side wings. Background Technology

[0002] Existing child car seat backrests generally consist of a backrest body, a headrest attached to the top of the backrest body, and side wings attached to both sides of the backrest body. To improve the protection of the user's head and sides provided by the child car seat backrest, some child car seat backrests are now designed so that the headrest can be raised and lowered relative to the backrest body, while the two side wings can move relative to the backrest body in directions that are further apart and closer together, respectively.

[0003] However, there is currently no child seat backrest that moves the side wings relative to the backrest body when the headrest is raised or lowered relative to the backrest body. Summary of the Invention

[0004] The purpose of this application is to provide a seat back with adjustable side wings, which can simultaneously adjust the position and height of the two side wings when adjusting the headrest height, so as to better protect the user's head and body.

[0005] This application is implemented as follows:

[0006] This application provides an adjustable seat backrest, which includes a backrest body, a headrest that is heightably connected to the top of the backrest body, and two side wings that are movably connected to both sides of the backrest body. The inner wall of the backrest body is provided with a pair of L-shaped first backrest grooves, and the bottom of the headrest is provided with a pair of L-shaped first headrest grooves. Each of the two side wings is connected to an L-shaped first slider. The top and bottom of the two first sliders are slidably disposed in the two first headrest grooves and the two first backrest grooves, respectively. When the headrest is raised or lowered, it drives the two first backrest grooves and the two first headrest grooves to push the two first sliders to move, so that the two side wings first move away from each other and then move away from each other while rising or moving in the opposite direction to reset.

[0007] In some alternative implementations, the two ends of the first slider protrude to form first positioning posts that are slidably disposed in the corresponding first headrest groove and first backrest groove.

[0008] In some optional embodiments, the inner wall of the backrest body is provided with a pair of L-shaped second backrest slide grooves located above the two first backrest slide grooves, and the bottom of the headrest is provided with a pair of L-shaped second headrest slide grooves located above the two first headrest slide grooves. The two side wings are respectively connected to a second slider located above the corresponding first slider. The top and bottom of the two second sliders are slidably disposed in the two second backrest slide grooves and the two second headrest slide grooves, respectively. When the headrest is raised or lowered, it drives the two second backrest slide grooves and the two second headrest slide grooves to push the two second sliders to move, so that the two side wings first move away from each other and then move away from each other while rising or moving in the opposite direction to reset.

[0009] In some alternative implementations, the two ends of the second slider protrude to form second positioning posts that are slidably disposed within the corresponding second backrest groove and second headrest groove.

[0010] In some optional embodiments, the inner wall of one end of the backrest body is provided with a pair of L-shaped third backrest slide grooves located below the two first backrest slide grooves, and the inner wall of the other end of the backrest body is provided with a pair of L-shaped fourth backrest slide grooves corresponding to the third backrest slide grooves. Each of the two side wings is connected to a third slider extending along the width direction of the backrest body. One end of each of the two third sliders is slidably disposed in the two third backrest slide grooves, and the other end is slidably disposed in the two fourth backrest slide grooves. When the headrest is raised or lowered, it drives the two third backrest slide grooves and the two fourth backrest slide grooves to push the two third sliders to move, so that the two side wings first move away from each other and then move away from each other while rising or moving in the opposite direction to reset.

[0011] In some alternative implementations, the two ends of the third slider protrude to form third positioning posts that are slidably disposed in the corresponding third backrest groove and fourth backrest groove.

[0012] In some alternative implementations, the backrest body is composed of a front backrest cover and a backrest cover connected together, with a third backrest slide groove and a fourth backrest slide groove respectively provided on the front backrest cover and the backrest cover.

[0013] In some alternative implementations, the first backrest slide and the second backrest slide are located on the backrest cover.

[0014] The beneficial effects of this application are as follows: The adjustable side-wing seat back provided by this application includes a backrest body, a headrest that is heightably connected to the top of the backrest body, and two side wings that are movably connected to both sides of the backrest body. The inner wall of the backrest body is provided with a pair of L-shaped first backrest grooves, and the bottom of the headrest is provided with a pair of L-shaped first headrest grooves. Each of the two side wings is connected to an L-shaped first slider. The top and bottom of the two first sliders are slidably disposed within the two first headrest grooves and the two first backrest grooves, respectively. When the headrest is raised or lowered, it drives the two first backrest grooves and the two first headrest grooves to push the two first sliders to move, causing the two side wings to first move away from each other and then simultaneously rise or move back to their original position while moving away from each other. The adjustable side-wing seat back provided by this application can simultaneously adjust the position and height of the two side wings when adjusting the headrest height, thus providing better protection for the user's head and body. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the first usage state of the adjustable side wing seat back provided in the embodiments of this application;

[0017] Figure 2 A schematic diagram of the second usage state of the adjustable side wing seat back provided in an embodiment of this application;

[0018] Figure 3 A schematic diagram of the third usage state of the adjustable side wing seat back provided in the embodiments of this application;

[0019] Figure 4 An exploded view of the adjustable side wing seat back provided in an embodiment of this application;

[0020] Figure 5 A partial structural diagram illustrating the connection between the side wings and the back cover of the seat back with adjustable side wings in the second usage state provided in the embodiments of this application;

[0021] Figure 6 A partial structural diagram showing the connection between the side wings and the back cover of the seat back with adjustable side wings in the third usage state provided in the embodiments of this application;

[0022] Figure 7 A schematic diagram of the structure of the first slider in the adjustable side wing seat back provided in the embodiments of this application.

[0023] In the diagram: 100, backrest body; 110, first backrest slide groove; 120, second backrest slide groove; 130, third backrest slide groove; 140, fourth backrest slide groove; 150, front backrest cover; 160, backrest cover; 200, headrest; 210, first headrest slide groove; 220, second headrest slide groove; 300, side wing; 310, first slider; 320, first positioning post; 330, second slider; 340, second positioning post; 350, third slider; 360, third positioning post. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The features and performance of the adjustable side wing seat back of this application will be further described in detail below with reference to embodiments.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, this application embodiment provides an adjustable side wing seat back, which includes a backrest body 100, a headrest 200 that is vertically connected to the top of the backrest body 100, and two side wings 300 that are movably connected to both sides of the backrest body 100. The backrest body 100 is composed of a backrest front cover 150 facing the user and a backrest back cover 160 away from the user. The backrest front cover 150 and the backrest back cover 160 enclose a backrest cavity with openings at the top and both sides. The bottom of the headrest 200 is vertically slidably inserted into the top opening of the backrest cavity, and the two side wings 300 are slidably inserted into the openings on both sides of the backrest cavity on their adjacent sides.

[0033] The inner wall of the backrest cover 160 is provided with a pair of L-shaped second backrest slide grooves 120, a pair of L-shaped first backrest slide grooves 110, and a pair of L-shaped fourth backrest slide grooves 140 arranged sequentially from top to bottom. The two second backrest slide grooves 120, the two first backrest slide grooves 110, and the two fourth backrest slide grooves 140 are symmetrically arranged along the central axis of the backrest cover 160. The tops of the two second backrest slide grooves 120, the two first backrest slide grooves 110, and the two fourth backrest slide grooves 140 extend away from each other along the height direction of the backrest cover 160. The bottoms of the two second backrest slide grooves 120, the two first backrest slide grooves 110, and the two fourth backrest slide grooves 140 extend towards each other along the width direction of the backrest body 100; the bottom inner wall of the backrest front cover 150 is provided with a pair of L-shaped third backrest slide grooves 130 corresponding one-to-one with the fourth backrest slide grooves 140, the tops of the two third backrest slide grooves 130 extend away from each other along the height direction of the backrest front cover 150, and the bottoms of the two third backrest slide grooves 130 extend towards each other along the width direction of the backrest front cover 150.

[0034] The bottom of the headrest 200 is provided with a pair of L-shaped second backrest slide grooves 120 and a pair of L-shaped first headrest slide grooves 210 arranged from top to bottom. The two second backrest slide grooves 120 and the two first headrest slide grooves 210 are symmetrically arranged along the central axis of the headrest 200. The tops of the two second backrest slide grooves 120 and the two first headrest slide grooves 210 extend towards each other along the height direction of the headrest 200, and the bottoms of the two second backrest slide grooves 120 and the two first headrest slide grooves 210 extend away from each other along the width direction of the backrest body 100.

[0035] Two adjacent sides of the two side wings 300 are respectively connected to a second slider 330, an L-shaped first slider 310, and a third slider 350 arranged from top to bottom; the tops of the two second sliders 330 extend towards each other along the height direction of the side wings 300, and the two ends of the two second sliders 330 respectively protrude to form second positioning posts 340, and the second positioning posts 340 at both ends of each second slider 330 are slidably inserted into the adjacent second backrest slide groove 120 and second headrest slide groove 220; the tops of the two first sliders 310 extend towards each other along the height direction of the side wings 300, and the two first sliders 310... The bottom extends away from each other along the width direction of the side wings 300. The two ends of the two first sliders 310 protrude to form first positioning posts 320. The first positioning posts 320 at both ends of each first slider 310 are slidably inserted into the adjacent first headrest slide groove 210 and first backrest slide groove 110. The two third sliders 350 extend along the width direction of the side wings 300. The two ends of the two third sliders 350 protrude to form third positioning posts 360. The third positioning posts 360 at both ends of each third slider 350 are slidably inserted into the adjacent third backrest slide groove 130 and fourth backrest slide groove 140.

[0036] When the headrest 200 rises or falls, it drives the two first slide bars 310 and the two second slide bars 330 to move along the two first backrest slide bars 110 and the two second backrest slide bars 120 respectively through the two first headrest slide bars 210 and the two second headrest slide bars 220, so that the two side wings 300 first move away from each other and then move away from each other while rising or moving in the opposite direction to reset.

[0037] The working principle of the adjustable side wing seat back provided in this application embodiment is as follows:

[0038] In its initial state, the bottom of the headrest 200 is retracted into the backrest body 100, and the two side wings 300 are retracted to the sides of the backrest body 100 respectively. When it is necessary to adjust the position of the headrest 200 and the side wings 300, the user can lift the headrest 200 upwards to allow it to move from its initial position. Figure 1 The first workstation shown is moved to the position shown. Figure 2In the second station shown, when the headrest 200 moves, it pushes the first positioning posts 320 at both ends of the two first sliders 310 and the second positioning posts 340 at both ends of the two second sliders 330 to move through the two first headrest slide grooves 210 and the two second headrest slide grooves 220. This causes the two first sliders 310 and the two second sliders 330 to move along the bottom of the two second backrest slide grooves 120 and the two first backrest slide grooves 110 on the inner wall of the backrest cover 160, thereby driving the two side wings 300 to move away from each other along the width direction of the backrest cover 160. When the headrest 200 rises, it causes the two side wings 300 to extend to both sides. When the two side wings 300 move away from each other along the width direction of the backrest cover 160, they drive the third positioning posts 360 at both ends of the two third sliders 350 to move away from each other along the bottom of the corresponding third backrest slide groove 130 and the fourth backrest slide groove 140, respectively.

[0039] The user then pulls the headrest 200 upwards further, so that the headrest 200 is as follows: Figure 2 The second workstation shown moves to the position as follows: Figure 3 In the third station shown, when the headrest 200 moves, it pushes the first positioning posts 320 at both ends of the two first sliding blocks 310 and the second positioning posts 340 at both ends of the two second sliding blocks 330 to move through the two first headrest slide grooves 210 and the two second headrest slide grooves 220. This causes the two first sliding blocks 310 and the two second sliding blocks 330 to move upward along the top of the two second backrest slide grooves 120 and the two first backrest slide grooves 110 on the inner wall of the backrest cover 160, thereby driving the two side wings 300 to move upward along the width direction of the backrest cover 160 in a direction away from each other. When the headrest 200 rises further, it drives the two side wings 300 to extend further to both sides and move upward. At the same time, when the two side wings 300 move upward along the width direction of the backrest cover 160 in a direction away from each other, they drive the third positioning posts 360 at both ends of the two third sliding blocks 350 to move upward along the top of the corresponding third backrest slide groove 130 and the fourth backrest slide groove 140 in a direction away from each other.

[0040] When the user needs to retract the headrest 200 and the two side wings 300 back into the backrest body 100, the user presses down on the headrest 200, causing it to descend from the third position to the second position. During this movement, the headrest 200 pushes the first positioning posts 320 at both ends of the two first headrest slides 310 and the second positioning posts 340 at both ends of the two second slides 330 through the bottoms of the two first headrest slides 210 and the two second headrest slides 220. This causes the two first slides 310 and the two second slides 330 to move along the two second backrest slides 120 and the two second backrest slides 340 respectively along the inner wall of the backrest cover 160. The bottom of the backrest slide 110 moves and descends in the opposite direction towards each other, thereby driving the two side wings 300 to move downward along the width direction of the backrest cover 160 towards each other. This causes the headrest 200 to descend, causing the two side wings 300 to contract to both sides and descend. At the same time, when the two side wings 300 move and descend along the width direction of the backrest cover 160 towards each other, they drive the third positioning posts 360 at both ends of the two third sliders 350 to move in the opposite direction towards each other and descend along the top of the corresponding third backrest slide 130 and fourth backrest slide 140.

[0041] Finally, the user presses the headrest 200 to move it from the second station to the first station and reset it. During this movement, the headrest 200 pushes the first positioning posts 320 at both ends of the two first headrest slides 310 and the second positioning posts 340 at both ends of the two second slides 330 via the tops of the two first headrest slides 210 and the two second headrest slides 220. This causes the two first slides 310 and the two second slides 330 to move along the two second backrest slides 120 and the two first backrest slides 160 respectively along the inner wall of the backrest cover 160. The top of 110 moves further in the opposite direction, thereby causing the two side wings 300 to move towards each other along the width direction of the backrest cover 160, causing the headrest 200 to drop and causing the two side wings 300 to retract into the backrest body 100. At the same time, when the two side wings 300 move towards each other along the width direction of the backrest cover 160, they cause the third positioning posts 360 at both ends of the two third sliders 350 to move towards each other along the bottom of the corresponding third backrest slide groove 130 and fourth backrest slide groove 140, respectively.

[0042] The adjustable side wing seat back provided in this embodiment of the application, by providing a pair of L-shaped first headrest sliding grooves 210 on the headrest 200, can cooperate with two corresponding L-shaped first backrest sliding grooves 110 on the backrest cover 160 and L-shaped first sliders 310 on the two side wings 300. When the headrest 200 rises or falls, the cooperation of the first headrest sliding grooves 210 and the first backrest sliding grooves 110 pushes the first sliders 310 to move, thereby causing the two side wings 300 to first move and open in a direction away from each other, and then move upward and expand or move in the opposite direction to return to their original position while moving in a direction away from each other; at the same time, by providing a pair of L-shaped first headrest sliding grooves 210 on the headrest 200, can cooperate with two corresponding L-shaped first backrest sliding grooves 110 on the backrest cover 160 and L-shaped first sliders 310 on the two side wings 300. A pair of L-shaped second backrest slide grooves 120 are provided to cooperate with two corresponding L-shaped second backrest slide grooves 120 provided on the backrest back cover 160 and two second sliders 330 provided on the two side wings 300. By cooperating with two L-shaped third backrest slide grooves 130 provided on the backrest front cover 150 and two corresponding L-shaped fourth backrest slide grooves 140 provided on the backrest back cover 160 and two third sliders 350 provided on the two side wings 300, it is ensured that when the headrest 200 rises or falls, it stably drives the two side wings 300 to first move away from each other to open, and then move away from each other to expand upward or move in the opposite direction to reset.

[0043] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A seat back with adjustable side wings, comprising a backrest body, a headrest heightably connected to the top of the backrest body, and two side wings movably connected to both sides of the backrest body, characterized in that, The inner wall of the backrest body is provided with a pair of L-shaped first backrest grooves, and the bottom of the headrest is provided with a pair of L-shaped first headrest grooves. Each of the two side wings is connected to an L-shaped first slider. The top and bottom of the two first sliders are slidably disposed within the two first headrest grooves and the two first backrest grooves, respectively. When the headrest rises or falls, it drives the two first backrest grooves and the two first headrest grooves to push the two first sliders to move, causing the two side wings to first move away from each other and then rise or move in the opposite direction to return to their original position. The two ends of the first sliders protrude to form first fixed points that slide within the corresponding first headrest grooves and first backrest grooves. Position column; the inner wall of the backrest body is provided with a pair of L-shaped second backrest slide grooves located above the two first backrest slide grooves, the bottom of the headrest is provided with a pair of L-shaped second headrest slide grooves located above the two first headrest slide grooves, the two side wings are respectively connected to a second slider located above the corresponding first slider, the top and bottom of the two second sliders are respectively slidably disposed in the two second backrest slide grooves and the two second headrest slide grooves; when the headrest rises or falls, it drives the two second backrest slide grooves and the two second headrest slide grooves to push the two second sliders to move, so that the two side wings first move away from each other and then move away from each other while rising or moving in the opposite direction to reset.

2. The adjustable side wing seat back according to claim 1, characterized in that, The two ends of the second slider protrude to form second positioning posts that are slidably disposed in the corresponding second backrest groove and second headrest groove.

3. The adjustable side wing seat back according to claim 1, characterized in that, The inner wall of one end of the backrest body is provided with a pair of L-shaped third backrest grooves located below the two first backrest grooves. The inner wall of the other end of the backrest body is provided with a pair of L-shaped fourth backrest grooves corresponding to the third backrest grooves. The two side wings are respectively connected to a third slider extending along the width direction of the backrest body. One end of the two third sliders is slidably disposed in the two third backrest grooves, and the other end is slidably disposed in the two fourth backrest grooves. When the headrest is raised or lowered, it drives the two third backrest grooves and the two fourth backrest grooves to push the two third sliders to move, so that the two side wings first move away from each other and then move away from each other while rising or moving in the opposite direction to reset.

4. The adjustable side wing seat back according to claim 3, characterized in that, The two ends of the third slider protrude to form third positioning posts that are slidably disposed in the corresponding third backrest groove and the fourth backrest groove.

5. The adjustable side wing seat back according to claim 3, characterized in that, The backrest body is composed of a front backrest cover and a backrest cover connected together, and the third backrest slide groove and the fourth backrest slide groove are respectively provided on the front backrest cover and the backrest cover.

6. The adjustable side wing seat back according to claim 5, characterized in that, The first backrest slide groove and the second backrest slide groove are provided on the backrest cover.

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