An adjustable winged seating structure and child safety seat

Abstract

This invention belongs to the field of child safety seats, providing a seat structure with adjustable side wings and a child safety seat, including a backrest body, a headrest, and side wings. The headrest has symmetrically arranged track grooves and locking blocks. A guide block is fixed to the upper end of the side wing, and the guide block is movably connected to the track groove to drive the side wing to unfold. An inwardly inclined limiting groove is formed on the side wing. Compared with the prior art, the advantage of this invention is that by setting track grooves and locking blocks on the headrest, the unfolding or folding movement of the side wings can be realized. Furthermore, the locking block slides along the limiting groove during the headrest's raising and lowering process, keeping its position outside the line connecting the shaft block and the guide block, forming a geometrically self-locking structure. This means that the side wings can be stably locked in any position by relying on the geometric relationship of the mechanical structure itself, avoiding displacement and swaying of the side wings along their unfolding direction due to insufficient restraint, thus ensuring the reliability of the side wing support and passenger safety.

Description

Technical Field

[0001] This invention belongs to the field of child safety seats, specifically relating to a seat structure with adjustable side wings and a child safety seat. Background Technology

[0002] With the development of the automotive industry and people's increasing demands for safety and comfort, the ergonomic design of seats has become increasingly important, especially for child safety seats or high-end adult seats. In order to adapt to the needs of users of different body types, they usually need to have the functions of headrest height adjustment and side wing width adjustment.

[0003] In the prior art, such as Chinese patent CN113071391A, a child safety seat with deployable side wings is disclosed, including a seat and a backrest. The inner side of the backrest is provided with a height-adjustable headrest. The backrest includes a backrest body fixed to the seat and two side wings. The lower end of the side wings is provided with a shaft connection point between it and the seat. The back of the headrest is provided with two guide posts. The backrest body is provided with two parallel straight grooves for the guide posts to slide up and down. The side wings include a side part of the backrest and a side wing part. The side part of the backrest is provided with an inwardly inclined guide groove. The guide posts pass through the straight groove and the inclined guide groove respectively. When the guide posts rise along the straight groove and the inclined guide groove with the headrest, the side wings rotate outward with the shaft connection point as the center, thereby causing the two side wings to unfold relative to the sides of the backrest body. This increases the height of the headrest and widens the width of the seat, adapting to the growth changes of children.

[0004] The existing side wing adjustment mechanism mainly relies on the coordinated action of linear and inclined guide grooves to unfold the side wing when the guide post rises with the headrest. However, when the side wing is in its initial position (i.e., when the side wing is not unfolded), the guide post is located at the bottom of the linear guide groove. In addition, the guide post is close to the rotation center (shaft contact point) of the side wing at this time, so the constraint force applied by the guide post and the shaft contact point is close to the bottom of the side wing. This also results in a lack of constraint force at the upper end of the side wing, which in turn causes the side wing to wobble along its unfolding direction. In addition, the manufacturing errors of the guide post, inclined guide groove, and linear guide groove themselves mean that even when the guide post slides to the top position of the inclined guide groove, it will still affect the stability of the side wing during use, posing a certain safety hazard. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a seat structure and child safety seat with adjustable side wings that is simple in structure, has good stability, and can ensure safe use of the side wings in any position.

[0006] The objective of this invention can be achieved by addressing the following technical problem: proposing a seat structure with adjustable side wings, including a backrest body, a headrest that is vertically and vertically connected to the backrest body, and side wings that are movably connected to both sides of the backrest body. The backrest body has a guide groove along the lifting direction of the headrest, and a shaft block is provided between the lower end of the side wing and the backrest body. The side wing rotates outward about the shaft block, so that the two side wings unfold relative to the two sides of the backrest body. The head is symmetrically provided with a track groove and a locking block on the upper side, and a guide block is fixedly provided at the upper end of the side wing. The guide block is movably connected to the track groove to drive the side wing to unfold. The side wing is provided with an inwardly inclined limiting groove, and the locking block passes through the guide groove and is movably connected to the limiting groove; During the lifting and lowering of the headrest, the locking block can move along the sliding path of the limiting slide groove, and the locking block is located outside the connection line between the shaft block and the guide block at any position on the sliding path.

[0007] In the aforementioned adjustable side wing seat structure, each of the track slots includes an interconnected lifting part and a driving part, wherein the driving part is tilted outward and is set at an angle to the lifting part.

[0008] In the aforementioned adjustable side wing seat structure, the guide block and the shaft connecting block are respectively located on the extension paths at both ends of the limiting slide groove.

[0009] In the aforementioned adjustable side wing seat structure, the limiting groove includes a longitudinal limiting part and an unfolding limiting part that are interconnected. The longitudinal limiting part is arranged parallel to the lifting part. The unfolding limiting part is inclined towards the inner side of the backrest body and is arranged at an angle to the longitudinal limiting part.

[0010] In the aforementioned adjustable side wing seat structure, the drive unit and the unfolding limiting unit are arranged in opposite directions relative to the tilt direction of the backrest body.

[0011] In the aforementioned adjustable side wing seat structure, the side wing is provided with a mounting groove for assembling the shaft connecting block, and the mounting groove is set at an angle to the longitudinal limiting part and is interconnected with it.

[0012] In the aforementioned adjustable side wing seat structure, the drive unit is connected to the bottom end of the lifting unit, the unfolding limiting unit is connected to the top end of the longitudinal limiting unit, and there is a height difference between the drive unit and the unfolding limiting unit.

[0013] In the aforementioned adjustable side wing seat structure, an unlocking handle and a shift block are movably disposed inside the headrest, and the backrest body is provided with a number of shift slots spaced apart along its height direction. The shift block is connected to the unlocking handle and can be movably inserted into the shift slot.

[0014] In the aforementioned adjustable side wing seat structure, the unlocking handle is provided with an unlocking groove at an angle, and the gear block is provided with an unlocking slider, which is movably engaged in the unlocking groove.

[0015] The technical solution adopted by the present invention to solve its technical problem is to also propose a child safety seat, including a seat structure with adjustable side wings as described above.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The adjustable side wing seat structure and child safety seat of the present invention, by setting a track groove and a locking block on the headrest, can realize the opening or closing movement of the side wing, and can also use the locking block to slide along the limiting slide groove during the lifting and lowering of the headrest, so that its position is outside the line connecting the shaft block and the guide block, forming a geometric self-locking structure. This means that the side wing can be stably locked by the geometric relationship of the mechanical structure itself in any position, avoiding the side wing from displacement and shaking in its opening direction due to insufficient constraint force, thus greatly ensuring the reliability of the side wing support and the safety of riding.

[0018] (2) By setting the drive unit and the unfolding limiting unit in opposite directions relative to the backrest body, the unfolding movement of the side wings and the limiting movement of the locking block are coordinated with each other, ensuring that the side wings can be reliably locked in the unfolded position during the unfolding process, thus improving the safety of the seat.

[0019] (3) Through the structural design that the mounting groove and the longitudinal limiting part are at an angle and are interconnected, the locking block, together with the shaft connecting block and the guide block, forms a triangular limiting structure for the side wing during the sliding process in the limiting groove, thus ensuring the stability of the side wing in different states.

[0020] (4) The gear block is connected to the unlocking handle and can be movably inserted into the gear slot. This design allows the headrest height to be easily adjusted and locked at different height positions to meet the needs of users of different heights and improve the usability of the seat. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure when the headrest is not raised. Figure 2 yes Figure 1 Rear view; Figure 3 This is a schematic diagram of the structure between the side wings and the backrest body when the headrest is raised to its highest position. Figure 4 yes Figure 3 Rear view; Figure 5 This is a schematic diagram of the installation structure of the unlocking handle and gear shift block inside the head; Figure 6 It is an exploded view of the area between the side wings and the main backrest.

[0022] In the diagram, 1 is the backrest body; 10 is the guide groove; 11 is the gear position groove; 2 is the headrest; 20 is the track groove; 200 is the lifting part; 201 is the drive part; 21 is the locking block; 22 is the unlocking handle; 220 is the unlocking groove; 221 is the elastic element; 23 is the gear position block; 230 is the unlocking slider; 3 is the side wing; 30 is the shaft connecting block; 31 is the guide block; 310 is the connecting pin; 311 is the guide gasket; 32 is the limiting groove; 320 is the longitudinal limiting part; 321 is the unfolding limiting part; and 33 is the mounting groove. Detailed Implementation

[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0025] like Figures 1 to 6 As shown, a seat structure with adjustable side wings 3 includes a backrest body 1, a headrest 2 that is vertically connected to the backrest body 1, and side wings 3 that are movably connected to both sides of the backrest body 1. The backrest body 1 has a guide groove 10 along the lifting direction of the headrest 2. A shaft connecting block 30 is provided between the lower end of the side wing 3 and the backrest body 1. The side wings 3 rotate outward about the shaft connecting block 30 as the center, so that the two side wings 3 unfold relative to the two sides of the backrest body 1.

[0026] Specifically, this design features a track groove 20 and a locking block 21 symmetrically arranged on the headrest 2. A guide block 31 is fixedly provided at the upper end of the side wing 3, and the guide block 31 is movably connected to the track groove 20 to drive the side wing 3 to unfold. An inwardly inclined limiting slide groove 32 is provided on the side wing 3. The locking block 21 passes through the guide slide groove 10 and is movably connected to the limiting slide groove 32. During the lifting and lowering of the headrest 2, the locking block 21 can move along the sliding path of the limiting slide groove 32, and the locking block 21 is located outside the connection line between the shaft connecting block 30 and the guide block 31 at any position on the sliding path.

[0027] To address the issue of wobbling that easily occurs when the side wing 3 relies solely on the cooperation of the guide post and shaft contact to maintain its attitude in existing technologies, this embodiment utilizes the geometric relationship that the locking block 21 is always outside the line connecting the shaft contact block 30 and the guide block 31, ensuring that the side wing 3 has a locking structure in any state. Specifically, when the headrest 2 is in a locked position... Figure 1 When the backrest body 1 is in its lowest position, the guide block 31 at the upper end of the side wing 3 is connected to the top of the track groove 20. Since the lower end of the side wing 3 is always connected to the backrest body 1 through the shaft connector 30, and the locking block 21 is located at the lower end of the guide slide groove 10 and the limiting slide groove 32, the triangular arrangement structure formed by the locking block 21, the shaft connector 30, and the guide block 31 ensures that the backrest body is in the lowest position. Figure 2 The stability of wing 3 in the shown state. As the user moves along... Figure 1 When the headrest 2 is pulled vertically upward, it rises linearly along the length of the guide groove 10. During this process, the locking block 21 slides along the path of the limiting groove 32. The track groove 20 moves upward synchronously with the headrest 2, ultimately forcing the guide block 31 to move outward, thereby driving the upper end of the side wing 3 to move outward (i.e., the side wing 3 with the shaft connecting block 30 as the center) and rotate outward in the direction of the backrest body 1 (i.e., the side wing 3 moves along the path of the limiting groove 32). Figure 2 (The headrest 2 unfolds around the pivot block 30 on both sides.) It is worth noting that during the ascent of the headrest 2, the locking block 21 slides along the limiting groove 32 (inwardly inclined) on the side wing 3. The inclination angle design of the limiting groove 32 ensures that the locking block 21 can adapt to the angle changes of the side wing 3. At the same time, the locking block 21 is always outside the line connecting the pivot block 30 (the rotation center of the side wing 3) and the guide block 31 (the force application point driving the side wing 3) at any position along the sliding path of the limiting groove 32. Therefore, regardless of the height of the headrest 2 or the position of the side wing 3 (including the undeployed position, any position during the deployment process, and...), the locking block 21 remains in place. Figure 4 As shown in the maximum unfolded position), the locking block 21 satisfies the self-locking condition at any position along the sliding path of the limiting groove 32 (in this embodiment, the self-locking condition means that the locking block 21, guide block 31, and shaft connecting block 30 are always triangularly distributed on the side wing 3), thus achieving stepless locking of the side wing 3 throughout its entire stroke. This structure provides the side wing 3 with extremely high resistance to lateral impacts, effectively preventing the side wing 3 from... Figure 2 The unexpanded position shown Figure 4 The maximum deployment position shown, as well as the swaying phenomenon that occurs at any position between the non-deployed position and the maximum deployment position (mainly limiting the swaying of the side wing 3 along its deployment direction), greatly improves the lateral protection performance for the occupants.

[0028] Each track slot 20 includes a lifting part 200 and a driving part 201 that are connected to each other. The driving part 201 is inclined outward and is set at an angle to the lifting part 200.

[0029] like Figures 1 to 4 As shown, in this embodiment, the lifting part 200 is a vertical straight groove structure, and the lifting part 200 is arranged parallel to the guide groove 10. Therefore, at the head rest 2... Figure 1 During the vertical upward lifting process, the lifting unit 200 moves relative to the guide block 31 in advance (that is, the relative position of the guide block 31 within the lifting unit 200 changes). Since the guide block 31 does not have lateral displacement, the upper end of the side wing 3 does not generate an outward driving force, and the side wing 3 remains stationary. Figure 2 The diagram shows the folded position (i.e., the undeployed state). In other words, when the guide block 31 is within the lifting section 200, the side wings 3 remain stationary. At this time, only the height of the headrest 2 increases, while the overall width of the side wings 3 remains unchanged. This is because when children are young, height changes significantly, while shoulder width changes less noticeably. Only when the headrest 2 is raised to a certain height, as the guide block 31 slides from the vertical lifting section 200 into the outwardly tilted drive section 201, the guide block 31, in order to adapt to the groove wall, pushes the upper end of the side wings 3 (i.e., the position of the guide block 31) outward to achieve the deployment function. Thus, this design utilizes the lifting process of the headrest 2, with the guide block 31 pushing the side wings 3 outward under the action of the drive section 201, to achieve the deployment of the side wings 3. The tilted drive section 201 provides greater deployment force, making the deployment of the side wings 3 smoother and more reliable.

[0030] Preferably, such as Figure 2 and Figure 4 As shown, in this embodiment, the guide block 31 and the shaft connecting block 30 can be located on the extension paths at both ends of the limiting slide groove 32. Since the limiting slide groove 32 has an inwardly inclined section (i.e., a non-straight groove structure), the locking block 21 can be collinearly set with the guide block 31 and the shaft connecting block 30 regardless of the position of the locking block 21 in the limiting slide groove 32. Of course, when the locking block 21 just slides to the corner position of the limiting slide groove 32, the locking block 21, the guide block 31 and the shaft connecting block 30 can also form a three-point positioning structure, ensuring that the side wing 3 maintains absolute stability throughout the entire height adjustment process of the headrest 2, thereby improving the service life and safety of the seat.

[0031] The limiting slide 32 includes a longitudinal limiting part 320 and an unfolding limiting part 321 that are interconnected. The longitudinal limiting part 320 is arranged parallel to the lifting part 200. The unfolding limiting part 321 is inclined to the inside of the backrest body 1 and is arranged at an angle to the longitudinal limiting part 320.

[0032] like Figures 1 to 4 ,as well as Figure 6 As shown, in this embodiment, the length of the longitudinal limiting part 320 is equivalent to the length of the lifting part 200. Similarly, the overall total straight length of the unfolding limiting part 321 is the same as the overall total straight length of the driving part 201. Therefore, when the user adjusts the height of the headrest 2, during the sliding process of the guide block 31 within the lifting part 200, the locking block 21, which is simultaneously raised with the headrest 2, is located within the longitudinal limiting part 320 of the side wing 3. Since both the longitudinal limiting part 320 and the lifting part 200 are designed as parallel (vertical) straight grooves, This allows the locking block 21 to slide simply up and down within the longitudinal limiting part 320. During this stage, the relative angle between the side wing 3 and the backrest body 1 remains unchanged (in the folded position). At the same time, with the coordinated cooperation of the locking block 21, the guide block 31, and the shaft connecting block 30, the side wing 3 is effectively locked in the unfolded state. This prevents the side wing 3 from swaying in the unfolding direction during the height adjustment of the headrest 2, thereby achieving independent height adjustment of the headrest 2, improving the stability of the side wing 3 and the overall quietness of the seat during use.

[0033] As the headrest 2 continues to rise, the guide block 31 slides from the lifting part 200 into the drive part 201, triggering the deployment of the side wing 3. As the guide block 31 moves along the outwardly inclined drive part 201, the upper end of the side wing 3 is forcibly pushed outward. At this time, the locking block 21 slides from the longitudinal limiting part 320 into the deployment limiting part 321. Since the deployment limiting part 321 is inclined towards the inside of the backrest body 1 and is set at an angle with the longitudinal limiting part 320, the sliding of the locking block 21 within the deployment limiting part 321 not only conforms to the rotation trajectory of the side wing 3, but more importantly, this geometric path ensures that the locking block 21 is always outside the connection line between the shaft connecting block 30 and the guide block 31 during the sliding process. When the headrest 2 stops rising and falling, the locking block 21 is locked at a certain point in the deployment limiting part 321, and the side wing 3 is firmly fixed at the current deployment angle using the above-mentioned geometric self-locking relationship.

[0034] Preferably, such as Figure 2 , Figure 4 and Figure 6 As shown, in this embodiment, the drive unit 201 and the unfolding limiting unit 321 are arranged in opposite directions relative to the backrest body 1. This design makes the unfolding movement of the side wing 3 and the limiting movement of the locking block 21 coordinated, ensuring that the side wing 3 can be reliably locked in the unfolded position during the unfolding process, thus improving the safety of the seat.

[0035] The side wing 3 is provided with a mounting groove 33 for assembling the shaft connecting block 30. The mounting groove 33 is set at an angle to the longitudinal limiting part 320 and is connected to it.

[0036] Furthermore, such as Figure 2 , Figure 4 and Figure 6 As shown, in this embodiment, the mounting groove 33 mainly provides the shaft connecting block 30 with a movable connection between the side wing 3 and the backrest body 1, thereby ensuring the smoothness and stability of the side wing 3 during its unfolding and retraction. Furthermore, the headrest 2... Figure 1 When the lock is in the unlifted position shown, the locking block 21 is at... Figure 2 At the bottom end of the longitudinal limiting part 320 shown, in this embodiment, the mounting groove 33 is set at an angle to the longitudinal limiting part 320, so that the side wing 3 is... Figure 2 In the undeployed state shown, the locking block 21, the shaft connecting block 30, and the guide block 31 already form a triangular limiting structure. Similarly, the locking block 21 slides at any position within the longitudinal limiting part 320 and the deployment limiting part 321. This design ensures the structural strength of the side wing 3 during movement and avoids the connection between the limiting slide groove 32 and the locking block 21 from affecting the stability of the side wing 3 during use due to its own manufacturing errors.

[0037] The drive unit 201 is connected to the bottom end of the lifting unit 200, and the unfolding limiting unit 321 is connected to the top end of the longitudinal limiting unit 320, with a height difference between the drive unit 201 and the unfolding limiting unit 321. Figures 1 to 4 As shown, this height difference ensures that the side wing 3 is not affected by the lifting action of the headrest 2 before the locking block 21 enters the unfolding limit part 321. As the headrest 2 continues to lift, the height difference between the drive part 201 and the unfolding limit part 321 gradually decreases, causing the guide block 31 to slide into the drive part 201, while the locking block 21 slides into the unfolding limit part 321. This design makes the unfolding and retraction process of the side wing 3 smoother, avoids interference during the movement, improves the ease of operation of the seat, and ensures that the locking block 21 can maintain stable locking of the side wing 3 throughout the entire lifting action of the headrest 2.

[0038] The headrest 2 is also equipped with an unlocking handle 22 and a shift block 23. The backrest body 1 is provided with several shift slots 11 at intervals along its height direction. The shift block 23 is connected to the unlocking handle 22 and can be movably inserted into the shift slot 11.

[0039] like Figure 5 and Figure 6 As shown, it should be noted that in this embodiment, an elastic element 221 is provided between the unlocking handle 22 and the headrest 2 (see reference). Figure 5As shown in the structure, when the user needs to adjust the height of the headrest 2, by applying an upward pulling force to the unlocking handle 22, as the elastic element 221 is gradually compressed, the unlocking handle 22 converts the longitudinal displacement into the lateral movement of the shift block 23 (i.e., retracts into the headrest 2). At this time, the shift block 23 is released from the locking of the shift groove 11, and the headrest 2 is in the unlocked state, and can then slide freely along the height direction of the backrest body 1. This design makes it easy to adjust the height of the headrest 2 and lock it at different height positions to meet the needs of users of different heights and improve the applicability of the seat.

[0040] The unlocking handle 22 is inclinedly provided with an unlocking groove 220, and the gear block 23 is provided with an unlocking slider 230, which is movably engaged in the unlocking groove 220.

[0041] Furthermore, such as Figure 5 and Figure 6 As shown, with the lifting action of the unlocking handle 22, the unlocking groove 220 on the unlocking handle 22 moves accordingly. Since the unlocking groove 220 is inclined, it will generate a lateral squeezing force on the unlocking slider 230. This structure converts the operating force of the unlocking handle 22 into a force that pushes the gear block 23 to move laterally, thereby realizing the release of the lock between the headrest 2 and the backrest body 1. Similarly, when the headrest 2 is adjusted to the required height, the energy released by the elastic element 221 is used to drive the gear block 23 to be inserted into the gear slot 11 of the corresponding height through the unlocking handle 22. Therefore, this design can realize the unlocking and locking of the gear block 23 by operating the unlocking handle 22, which is simple and quick to operate and improves the user experience.

[0042] This solution also provides a child safety seat, which includes the aforementioned adjustable side wings 3. Therefore, it has an adjustable design for the side wings 3 and a stable locking function for the side wings 3 in any position, enabling the child safety seat to better adapt to the needs of children of different sizes, provide more fitting lateral protection, and improve the safety and comfort of children riding in the seat.

[0043] It should be noted that the elastic element 221 in this embodiment can be replaced by other elastic devices such as compression springs and return springs. Furthermore, both the guide block 31 and the locking block 21 in this embodiment employ a mating structure of connecting pin 310 and guide pad 311. The connecting pin 310 on the guide block 31 moves through the track groove 20, while the connecting pin 310 on the locking block 21 moves through the guide slide groove 10 and the limiting slide groove 32. The guide pad 311 movably abuts against the stepped inner wall of each slide groove (see reference). Figure 4 and Figure 6The structure and working principle are the same as those of existing technologies, and will not be described in detail here. Of course, the shaft connecting block 30 in this embodiment can also use the above-mentioned connecting pin 310 and gasket structure to achieve the movable connection between the backrest body 1 and the side wing 3.

[0044] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their 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 invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0046] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. An adjustable winged seat structure comprising a backrest body, a headrest connected to the backrest body in a liftable manner, and wings respectively movably connected to both sides of the backrest body, wherein, The backrest body is provided with a guide groove along the lifting direction of the headrest. A shaft connecting block is provided between the lower end of the side wing and the backrest body. The side wing rotates outward about the shaft connecting block, causing the two side wings to unfold relative to the sides of the backrest body. The characteristic feature is that: The head is symmetrically provided with a track groove and a locking block on the upper side, and a guide block is fixedly provided at the upper end of the side wing. The guide block is movably connected to the track groove to drive the side wing to unfold. The side wing is provided with an inwardly inclined limiting groove, and the locking block passes through the guide groove and is movably connected to the limiting groove; During the lifting and lowering of the headrest, the locking block can move along the sliding path of the limiting slide groove, and the locking block is located outside the connection line between the shaft block and the guide block at any position on the sliding path.

2. The adjustable winged seating structure of claim 1, wherein, Each of the track slots includes an interconnected lifting section and a driving section, wherein the driving section is inclined outward and is set at an angle to the lifting section.

3. The adjustable side wing seat structure according to claim 1, characterized in that, The guide block and the shaft connecting block are respectively located on the extension paths at both ends of the limiting slide groove.

4. The adjustable side wing seat structure according to claim 2, characterized in that, The limiting slide includes a longitudinal limiting part and an unfolding limiting part that are interconnected. The longitudinal limiting part is arranged parallel to the lifting part. The unfolding limiting part is inclined towards the inner side of the backrest body and is arranged at an angle to the longitudinal limiting part.

5. The adjustable side wing seat structure according to claim 4, characterized in that, The drive unit and the unfolding limiting unit are arranged in opposite directions relative to the tilt direction of the backrest body.

6. The seat structure with adjustable side wings according to claim 4, characterized in that, The side wing has a mounting groove for assembling the shaft connection block. The mounting groove is set at an angle to the longitudinal limiting part and is interconnected with it.

7. The adjustable side wing seat structure according to claim 5, characterized in that, The driving part is connected to the bottom end of the lifting part, the unfolding limiting part is connected to the top end of the longitudinal limiting part, and there is a height difference between the driving part and the unfolding limiting part.

8. The seat structure with adjustable side wings according to claim 1, characterized in that, The headrest is also movably provided with an unlocking handle and a shift block. The backrest body is provided with a number of shift slots at intervals along its height direction. The shift block is connected to the unlocking handle and can be movably inserted into the shift slot.

9. The seat structure with adjustable side wings according to claim 8, characterized in that, The unlocking handle is provided with an unlocking groove at an angle, and the gear block is provided with an unlocking slider, which is movably engaged in the unlocking groove.

10. A child safety seat, characterized in that, The seat structure includes an adjustable side wing as described in any one of claims 1-9.

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