A headrest and an adjustable headrest assembly

Abstract

A headrest assembly (108, 204, 500, 602), comprising: a transverse element (208, 508, 608) configured to be movable in at least one of: a forward direction or a backward direction along a first axis (114, 212), wherein the transverse element comprises a plurality of notches (216, 526, 636), and wherein the plurality of notches is configured to retain a wire (222, 512, 804, 806); an actuating unit (120, 228, 604) which is operatively connected to the transverse element and the wire, wherein the actuating unit is configured to exert a force on the wire; and the wire which is operatively connected to the transverse element and the actuating unit, wherein the wire comprises a first end (234, 640), a plurality of curved sections (238), a plurality of linear sections (244) and a second end (248), and wherein the plurality of linear sections is configured to engage or disengage with the plurality of notches in response to the force exerted by the actuating unit on the first end, such that the wire moves from a first state to a second state to enable controlled movement of the headrest assembly in one or more directions.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a headrest. More precisely, the present disclosure relates to an adjustable headrest assembly of the headrest. BACKGROUND

[0002] Vehicle seats are typically equipped with head restraints (headrests) as a safety and comfort feature for the occupant (user). Headrests are usually height-adjustable and can be adapted to the height and posture of different users to provide both support and protection while driving. Furthermore, the ease of operation and adjustability of the headrest are crucial for its effective functionality and the overall performance of the vehicle seat assembly.

[0003] Conventional headrest adjustment mechanisms often employ vertical motion systems, frequently incorporating one or more support columns or rods extending from the headrest into the backrest of a vehicle seat assembly. Typically, one or more support columns are held by bushings housed within a frame of the backrest. This allows the headrest to move up or down along a predefined path. However, these support columns can generate squeaking and rattling noises resulting from the interaction of various moving parts during the headrest adjustment process. Such noises can negatively impact the comfort and driving experience for the occupant. Furthermore, the complexity of the components involved in such mechanisms contributes to high manufacturing and assembly costs, making the overall system less efficient.Therefore, in light of the above discussion, there is a need to overcome the aforementioned disadvantages. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 shows a schematic representation of an adjustable headrest according to an exemplary embodiment of the present disclosure; Fig. 2A shows a schematic representation of a cross-sectional view of a headrest assembly according to an exemplary embodiment of the present disclosure; Fig. Figure 2B shows a schematic representation of a top view of the headrest assembly according to an exemplary embodiment of the present disclosure; Fig. Figure 2C shows a schematic representation of a side view of the headrest assembly according to an exemplary embodiment of the present disclosure; Fig. Figure 3 shows a schematic representation of an exploded view of the headrest assembly according to an exemplary embodiment of the present disclosure; Fig. 4A and Fig. Figure 4B shows a schematic representation of different views of a wire of the headrest assembly according to an exemplary embodiment of the present disclosure; Fig. Figure 5 shows a schematic representation of a cross-sectional side view of the headrest assembly according to an exemplary embodiment of the present disclosure; Fig. Figure 6 shows a schematic representation of a cross-sectional view of the headrest in a first state according to a further exemplary embodiment of the present disclosure; Fig. Figure 7 shows a schematic representation of a cross-sectional view of the headrest assembly in a second state according to a further exemplary embodiment of the present disclosure; and The Fig. 8A and Fig. Figure 8B illustrates a schematic representation of a movement of the wire of the headrest assembly from the first state to the second state according to a further exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0004] Detailed reference is now made to embodiments, examples of which are shown in the accompanying drawings. The following detailed description presents numerous specific details to provide a thorough understanding of the various described embodiments. However, it is obvious to a person skilled in the art that the various described embodiments can be implemented without these specific details. In other cases, known methods, procedures, components, circuits, and networks have not been described in detail in order to avoid unnecessarily obscuring aspects of the embodiments.

[0005] It is understood that the disclosed embodiments are merely examples and that various and alternative forms are possible. The drawings are not necessarily to scale; some features may be exaggerated or reduced in size to show details of certain components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for instructing a person skilled in the art of using embodiments according to the disclosure in various ways.

[0006] “One or more” includes a function performed by a single element, a function performed by more than one element (e.g., in a distributed manner), multiple functions performed by one element, multiple functions performed by multiple elements, or any combination of the above.

[0007] It is also assumed that, although the terms "first," "second," etc., are used in some cases to describe different elements, these elements should not be restricted by these terms. These terms are only used to distinguish one element from another.

[0008] The terminology used in the description of the various embodiments described herein serves solely to describe specific embodiments and is not intended to be restrictive. As used in the description of the various described embodiments and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It is also understood that the term "and / or" used herein refers to and encompasses all possible combinations of one or more of the associated listed elements.It is further understood that the terms “include”, “comprising”, “encompasses” and / or “comprehensive”, when used in this specification, indicate the presence of the specified features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0009] Conventional headrest adjustment mechanisms often employ vertical motion systems, frequently incorporating one or more support columns or rods extending from the headrest into the backrest of a vehicle seating arrangement. These support columns are typically mounted in bushings housed within a frame of the backrest, allowing the headrest to move up or down along a predefined path. However, these support columns can generate squeaking and rattling noises resulting from the interaction of various moving parts during the headrest adjustment process. Such noises can negatively impact the comfort and overall driving experience for the occupant. Furthermore, the complexity of the components involved in such mechanisms contributes to high manufacturing and assembly costs, making the overall system less efficient.Therefore, in light of the above discussion, there is a need to overcome the aforementioned disadvantages.

[0010] The present disclosure relates to a seat assembly comprising a seat back, one or more support posts arranged on the seat back, and a headrest for supporting the head of a seat occupant. The headrest comprises a trim cover configured to cover at least a portion of the headrest assembly and a cushion configured to be fitted between the trim cover and the headrest assembly. Furthermore, the headrest assembly includes various components such as a transverse element, an actuating unit, and a wire to facilitate controlled movement of the headrest. In this respect, the transverse element can be a structural component configured to move along a predefined axis either forwards or backwards.The forward or backward movement facilitates adjustment of the headrest assembly, thus meeting the comfort requirements of the seat user. Additionally, the transverse element incorporates numerous notches configured to hold the wire in place, preventing unintentional adjustment of the headrest. The transverse element is functionally connected to the actuating unit and the wire. The actuating unit can be described as a mechanical component configured to exert a controlled force on the wire, enabling precise control of the actuating unit's engagement and disengagement from the multiple notches. The wire itself features both numerous curved and linear sections, allowing for smooth movement between the locked and unlocked positions.The numerous curved sections allow for flexible movement, while the numerous linear sections, combined with the many notches, ensure secure engagement. The actuating unit, wire, and cross member work together to enable controlled movement of the headrest assembly in one or more directions, thereby enhancing both comfort and safety for the seat occupant (i.e., the user). Furthermore, the headrest assembly provides improved tolerance, smooth operation, and precise positioning of the headrest, resulting in a seamless and reliable adjustment mechanism.

[0011] In Fig. Figure 1 is a schematic representation of an adjustable headrest 104 according to an exemplary embodiment of the present disclosure. The headrest 104 is connected to a seat assembly, such as a vehicle seat assembly. In various embodiments, the seat assembly can be shaped and dimensioned as a driver's or front passenger's seat in the first row, or as a second, third, or other seat in the rear row. Additionally, the seat assembly can be configured for use with other applications outside of vehicles. In one example, the seat assembly can be used for any type of seat assembly, such as a land vehicle, a reclining chair, an aircraft, a watercraft, or the like. In one embodiment, the seat assembly comprises one or more seat elements. Typically, the seat assembly includes a seat frame, a seat cushion on which a user (i.e., a person sitting) sits.a seat occupant) can sit, a backrest against which the user can lean when sitting on the seat cushion, a trim cover and the headrest 104.

[0012] Furthermore, the headrest 104 comprises a trim cover, a cushion, and a headrest assembly 108. In one embodiment, the trim cover can cover at least part of a visible outer surface of the headrest 104 and be touched by the seat user. In another embodiment, the trim cover can be made of any suitable material or materials, such as fabric, vinyl, leather, or the like. In another embodiment, the trim cover can cover the cushion. In another embodiment, the cushion can be arranged beneath at least part of the trim cover. In another embodiment, the cushion can be made of one or more suitable materials, such as foam. In another embodiment, the headrest 104 can move in several directions relative to the seat back, as explained in more detail below.As shown, the headrest 104 comprises one or more support posts 122. In one embodiment, the one or more support posts 122 can extend from the seat back to the headrest 104. In another embodiment, the one or more support posts 122 can be made of any suitable material or materials, such as a metal or a metal alloy. In another embodiment, the one or more support posts 122 can have a U-shaped configuration, which can include a lower section and an upper section. In another embodiment, the lower section can extend through the top of the seat back. Furthermore, the lower section may or may not be movable relative to the seat back. In another embodiment, the upper section can be integral with the lower section.In one embodiment, the upper section can be U-shaped, extend between two lower sections of the one or more support posts 122, and may or may not move relative to the seat back. In another embodiment, the upper section can be located within the headrest 104 and be positioned closer to the sitter's head than a portion of the lower section extending towards the seat back.

[0013] As shown, the headrest assembly 108 comprises a transverse element (as shown below in Fig. 2A), a wire (as described below in Fig. 2A) and an actuating unit 120. Herein, the term "transverse element" refers to a structural component that typically extends over a width of the headrest assembly 108 to provide support and stability to the headrest 104. In one embodiment, the transverse element is configured to allow the headrest to move in multiple directions. In one embodiment, the transverse element is operatively connected to the actuating unit 120. As shown, the actuating unit 120 is arranged in a side section of the headrest assembly 108. In one embodiment, the actuating unit 120 may have an outer surface that can be touched by the user when the actuating unit 120 is pressed. In one embodiment, the actuating unit 120 may have a cover and a button. In one embodiment, the actuating unit 120 may be movably received in the cover.In one embodiment, the actuating unit 120 can be made of any suitable material, such as a polymer, and be integrally formed as a single-piece component. In another embodiment, the actuating unit 120 is configured to control the operation of a section of the wire. For example, the actuating unit 120 can be configured to actuate or trigger the wire to selectively activate or deactivate the movement of at least one part of the headrest 104. In one exemplary embodiment, the wire can restrain the movement of the headrest 104 with respect to one or more support posts 122 when it is in a locked state. In another embodiment, the wire can allow movement of the headrest 104 along the first axis 114 when it is in a first state (i.e., an unlocked state).

[0014] With reference to the presented Fig. Figure 2A is a schematic representation of a cross-sectional view of the headrest assembly 204 according to an exemplary embodiment of the present disclosure. As shown in Fig. As shown in Figure 2A, the headrest assembly 204 comprises a transverse element 208, a plurality of notches 216, a wire 222, and an actuating unit 228. In one embodiment, the housing of the headrest 104 (as shown in Figure 2A) can be Fig. (described in Figure 1) define a cavity that at least partially accommodates the transverse element 208 and other components of the headrest assembly 200. In one embodiment, the headrest assembly 204 further comprises one or more support posts 250. As shown, the transverse element 208 can be movably arranged on the one or more support posts 250. For example, the transverse element 208 can be configured to slide along the one or more support posts 250 in a vertical direction. In one embodiment, the transverse element 208 can be provided as a single component or as a multiple component. In one embodiment, the transverse element 208 can be arranged within the headrest 104 and be movable along a first axis 212 with respect to the one or more support posts 250. In this respect, the transverse element 208 is movable in a forward direction.Furthermore, the transverse element 208 is movable in the reverse direction. In one embodiment, the forward direction is a direction of travel along a longitudinal axis of a vehicle. In this respect, all adjustments made to the headrest assembly 204 are aligned to coincide with the primary axis of movement of the vehicle. For example, when the user moves the headrest forward or backward, these movements directly correspond to the direction of vehicle movement. Moreover, such movements of the headrest assembly 204 improve the ergonomics of the seat assembly and support the occupant's head and neck in a way that promotes precise alignment during travel. In addition, such a configuration of the headrest assembly 204 ensures comfort over extended periods and prevents strain or injury to the occupant.As shown, the transverse element 208 is operatively coupled to the actuating unit 228 and the wire 222. Furthermore, the actuating unit 228 is configured to exert a force on the wire 222. The wire 222 comprises a first end 234 and a second end 248. The wire 222 also comprises a plurality of curved sections 238 and a plurality of linear sections 244 between the first end 234 and the second end 248. In one embodiment, the plurality of curved sections 238 comprises multiple curved sections. In such an embodiment, the plurality of linear sections 244 comprises multiple linear sections such that the multiple curved sections and the multiple linear sections are configured to be arranged alternately. An enlarged view 205 of the plurality of notches 216 is also shown.As shown, the plurality of notches 216 is configured to retain the plurality of linear sections 244 of the wire 222. In one embodiment, the force exerted by the actuating unit 228 is a mechanical force exerted by a user-activated button assembly. In one embodiment, the force may typically be in the range of about 15 to about 25 newtons to facilitate the smooth release of the plurality of linear sections 244 of the wire 222 from the plurality of notches 216. In one embodiment, the force is optimal to prevent the effective locking or unlocking of the wire 222. In one embodiment, the plurality of linear sections 244 is configured to engage or disengage with the plurality of notches 216 in response to the force exerted by the actuating unit 228 on the first end 234.In such an embodiment, the wire 222 moves from a first state to a second state to allow controlled movement of the headrest assembly 204 in one or more directions. In one embodiment, the first state is a locking state of the wire 222. In another embodiment, the second state is the unlocking state of the wire 222. In the locking state, the wire 222 is engaged in such a way that it secures the headrest in a locked position. This is achieved by applying tension to the wire 222, effectively preventing any movement of the headrest. In one embodiment, the headrest remains firmly in place in the locked state during vehicle operation, thus minimizing the risk of unintentional adjustments or displacements of the headrest assembly 204.In another embodiment, the wire 222, when unlocked, allows adjustment of the headrest. In such an embodiment, when in the second state, the wire 222 releases the tension or changes its configuration, allowing the user to reposition the headrest as desired. Furthermore, the second state facilitates simple and intuitive adjustments to improve the user experience while adhering to safety protocols. In yet another embodiment, the transition between the locked and unlocked states can be activated manually or automatically, thus maintaining a balance between user-friendliness and functionality of the headrest assembly 204.

[0015] In one embodiment, the plurality of curved sections 238 and the plurality of linear sections 244 of the wire 222 enable a predefined displacement of the wire 222 in a second direction. In such an embodiment, the predefined displacement facilitates movement of a section of the wire 222 in a third direction. It is understood that the wire 222 is designed to accommodate both linear and rotational movements. Furthermore, the wire 222 enables an effective transition between states and positions of the headrest assembly 204. In an exemplary embodiment, when the actuating unit 228 is pressed, a force is exerted on the section of the wire 222 located near the second end 248, thereby releasing the wire 222 from the plurality of notches 216.Here, the second direction is a horizontal direction (represented as the x-axis) and the third direction is a vertical direction (represented as the y-axis). In an exemplary embodiment, the movement initiated by the actuating unit 228 allows a controlled displacement of approximately 8 millimeters (mm) in the horizontal direction and approximately 5 mm in the vertical direction. In an exemplary embodiment, the controlled movement allows the headrest assembly 204 to be adjusted with minimal effort and high accuracy. In one embodiment, the plurality of curved sections 238 allows the wire 222 to bend and twist uniformly. The uniform twisting is used to prevent friction of the wire 222 with the plurality of notches 216 or other components of the headrest assembly 204.

[0016] In the depicted Fig. Figure 2B is a schematic top view of the headrest assembly 204 according to an exemplary embodiment of the present disclosure. As shown, the transverse element 208 comprises one or more openings arranged on opposite sides of the transverse element 208. In one embodiment, the one or more openings are configured to accommodate the one or more support posts 250 (as shown above in Figure 2B). Fig. (described in 2A). In one embodiment, the actuating unit 228 further comprises a button assembly 258, which is operatively connected to an actuator 262. In this respect, the button assembly 258 is configured to exert the force on the actuator 262. In one embodiment, the actuator 262 is configured to be operatively connected to the button assembly 258. In such an embodiment, the actuator 262 is configured to move the first end 234 of the wire 222 in response to the force exerted by the button assembly 258. In one embodiment, the transverse element 208 can comprise a top, a bottom, a front, a back, etc. In one embodiment, the top can face away from the seat back and toward the top of the headrest. In one embodiment, the bottom can be arranged opposite the top. In one embodiment, the bottom can face toward the seat back.In one embodiment, the front can face the front of the headrest. In another embodiment, the back can be positioned opposite the front. In another embodiment, the back can extend from the top to the bottom. In another embodiment, one or more support posts 250 can project from the top.

[0017] In one embodiment, the actuator 262 is configured such that the wire 222 automatically re-engages in the plurality of notches 216 (as shown above in Fig. (described in Figure 2A), when the actuating unit 228 is released, the actuator returns from the unlocked state to the locked state. This mechanism operates through a spring-loaded or tension-based phenomenon that maintains tension on the wire 222 during adjustment. In one such embodiment, the configuration of the actuator 262, upon release of the actuating unit 228, allows the wire 222 to slide back into alignment with the plurality of notches 216, thereby locking the headrest. In another embodiment, after release of the actuating unit 228, the actuator 262 facilitates the engagement of the wire 222 with the plurality of notches 216, thus enabling a smooth transition from the unlocked state to the locked state.In such an embodiment, the actuator 262 comprises mechanical elements that enable the wire 222 to align itself without additional user input and fit securely into the plurality of notches 216. The technical effect of the automatic locking is to make the headrest stable and secure, thereby increasing the safety of the occupant during vehicle operation.

[0018] In the depicted Fig. Figure 2C is a schematic representation of a side view of the headrest assembly 204 according to an exemplary embodiment of the present disclosure. As shown in Fig. Figure 2C shows a side view of the transverse element 208. The button assembly connected to the transverse element 208 is also shown. The multitude of notches 216 is configured to hold a portion of the wire 222 in such a way that an optimal gap exists between the wire 222 and an inner layer of the multitude of notches 216. It is understood that the wire 222 has predefined dimensions to create the optimal gap. Furthermore, the optimal gap is configured to reduce the frictional forces between the wire 222 and the multitude of notches 216 during the first and second states. This configuration of the wire 222 also allows for smooth movement of the headrest assembly 204 due to the absence of frictional forces.

[0019] In the depicted Fig. Figure 3 is a schematic representation of an exploded view of the headrest assembly 204 according to an exemplary embodiment of the present disclosure. As shown, the headrest assembly 204 comprises the actuating unit 228 (as above in Figure 3). Fig. (described in Figure 2A). The actuating unit 228 further comprises the button assembly 258, which is operatively connected to the actuator 262. In this respect, the button assembly 258 and the actuator 262 work together to exert force on a section of the wire 222, thereby changing the state of the wire 222 from the first state to the second state. As shown, the button assembly 258, the actuator 262, and the transverse element 208 are arranged such that the button assembly 258 is located near the user of the headrest assembly 204. In an exemplary embodiment, the user can press the button assembly 258, which further depresses the actuator 262 and exerts a force on the wire 222 to change its state. Furthermore, the transverse element 208 is, as shown, divided into two parts that are joined together during assembly.Furthermore, the wire 222 is configured such that it is arranged at least partially within the transverse element 208. As shown, the wire 222 comprises the first end 234 and the second end 248. As shown, the wire 222 comprises a plurality of curved sections 238 and a plurality of linear sections 244 between the first end 234 and the second end 248. In an exemplary embodiment, a curved section from the plurality of curved sections 238 is configured such that it is arranged between two linear sections from the plurality of linear sections 244. In one embodiment, the actuator 262 is configured such that, when the actuating unit 228 is pressed, it exerts the force on a pivot point 266 on a curved section 270 under the plurality of curved sections 238 of the wire 222.Here, the pivot point 266 refers to a specific location along the wire 222 where a pivoting motion occurs during the transition between the locked and unlocked states of the headrest assembly 204. The pivot point 266 allows the section of wire 222 to pivot or rotate when force is applied by the actuating unit 228. In one exemplary embodiment, the plurality of curved sections 238 and the plurality of linear sections 244 of the wire 222 interact with the plurality of notches 216 and the transverse element 208 when the actuating unit 228 exerts a force on the wire 222, resulting in a controlled displacement of the wire 222. In another embodiment, the pivot point 266 can serve as an axis or pivot point about which the wire 222 moves.For example, if the actuating unit 228 exerts pressure at one end of the wire 222, the wire 222 can rotate about the pivot point 266, causing other sections of the wire 222 to either engage in or disengage from the plurality of notches 216.

[0020] The in the Fig. 4A and Fig. The schematic figures shown in Figure 4B depict various views of the wire 222 of the headrest assembly 204 according to an exemplary embodiment of the present disclosure. As shown in Fig. Figure 4A shows a top view of the wire 222. The wire 222 comprises the first end 234 and the second end 248. The wire 222 includes a plurality of curved sections 238 and a plurality of linear sections 244 between the first end 234 and the second end 248. In one embodiment, the wire 222 is made of stainless steel. In one embodiment, manufacturing the wire 222 from stainless steel provides corrosion resistance, which allows it to maintain performance and aesthetics over time, particularly in environments exposed to humidity or fluctuating temperatures. In one embodiment, the stainless steel can provide high tensile strength, which supports the wire 222's ability to withstand significant forces without deformation, thus ensuring reliable operation. In one embodiment, the wire 222 has a predefined dimension.In another embodiment, the wire 222 has a predefined shape and size to allow smooth movement of the headrest assembly 204. In one embodiment, the wire 222 is designed to have optimal tensile strength. In one embodiment, the optimal tensile strength can enable the application of force to the wire 222. As in . Fig. Figure 4B shows a side view of the wire 222. In one embodiment, each of the plurality of curved sections 238 and the plurality of linear sections 244 is configured to be arranged at predefined angles to each other to allow controlled movement of the wire 222 and thus controlled movement of the headrest assembly 204. In one embodiment, the wire 222 may also have a surface coating or treatment to improve its corrosion and wear resistance under various environmental conditions. In one embodiment, the wire 222 may have different diameters along its length to optimize flexibility and strength where required. In one embodiment, the wire 222 may be provided with integrated features such as grooves or textures to improve grip and engagement with the plurality of notches (as described above).

[0021] In one embodiment, the plurality of curved sections 238 and the plurality of linear sections 244 of the wire 222 are configured to provide a predefined operating force and control a tolerance value of the movement of the headrest assembly. In such an embodiment, the design of the wire 222 enables precise control of the forces exerted during headrest adjustment. In an exemplary embodiment, the plurality of curved sections 238 can help to distribute the stresses evenly while allowing smoother transitions, while the plurality of linear sections 244 can facilitate direct movement along defined paths. It is understood that the wire 222 is designed to prevent the likelihood of slippage or misalignment.

[0022] In Fig. Figure 5 is a schematic representation of a cross-sectional side view of the headrest assembly 500 according to an exemplary embodiment of the present disclosure. As shown, the headrest assembly 500 comprises a transverse element 508, a wire 512, a movable section 518, and a fixed section 524. In this respect, the wire 512 is positioned between the fixed section 524 and the movable section 518. The fixed section 524 accommodates a plurality of notches 526, while the movable section 518 is directly connected to the wire 512. As shown, the wire 512 is initially engaged in one of the plurality of notches 526 within the fixed section 524. In an exemplary embodiment, the wire 512 is securely held in one of the plurality of notches 526 when the headrest assembly 500 is in a locked position.This prevents relative movement between the fixed section 524 and the movable section 518 of the headrest assembly 500. In one embodiment, an external force is applied to the wire 512 to unlock the headrest assembly 500. This force causes the wire 512 to bend and disengage from one of the plurality of notches 526. When the wire 512 disengages from one of the plurality of notches 526, it moves upward, pulling the movable section 518 along with it. This upward movement effectively unlocks the headrest assembly 500. In one embodiment, the wire 512 is designed to have a spring-like property. When the wire 512 is released from one of the plurality of notches 526, it tends to return to its original position.It is understood that the design of the wire 512 and its interaction with the plurality of notches 526 in the fixed section 524 of the headrest assembly 500 are essential for the locking and unlocking mechanism. Furthermore, the ability of the wire 512 to engage with and disengage from the plurality of notches 526 enables the headrest assembly 500 to securely hold its position when locked and to be easily unlocked when required.

[0023] Regarding the depicted Fig. Figure 6 is a schematic representation of a cross-sectional view of the headrest 600 in a first state according to a further exemplary embodiment of the present disclosure. A cross-sectional view of a headrest assembly 602 is shown, which enables controlled movement of the headrest 600 in a vehicle seat. In one embodiment, the headrest assembly 602 is configured to move in response to user input via an actuating unit 604. The actuating unit 604 is configured to include both a button assembly 834 (as shown below in Figure 6) and a button assembly 834 (as shown below). Fig. 8A) as well as an actuator 836 (as shown below in Fig. (shown in Figure 8A). The button assembly is configured such that, when pressed, it exerts a force on the actuator 836 and triggers the movement of a wire 610. Furthermore, the actuator is operatively coupled to both the button assembly and the wire 610. In one embodiment, the actuator is configured to move a first end 640 of the wire 610 when the button assembly is activated. As shown, the headrest assembly 602 includes a transverse element 608, which is structurally configured to move in at least one direction, either forward or backward, along a first axis 612. In one embodiment, the first direction refers to the forward or backward movement of the headrest 600, corresponding to a longitudinal axis of the vehicle. In one embodiment, the longitudinal axis runs along the length of the vehicle, from the front (where the driver normally sits) to the rear (towards the rear of the vehicle).In one example, the direction of travel means the direction toward the front of the vehicle; that is, the headrest moves in the same direction as the vehicle moves forward. In an exemplary embodiment, the actuating unit 604 is configured to release the wire 610 from its locked state (as described below) when the occupant wishes to adjust the headrest 600 for greater comfort or safety. In such an embodiment, the headrest 600 can then move forward along its longitudinal axis, meaning that the headrest 600 moves closer to the front of the vehicle. In such an exemplary embodiment, the adjustment could, for example, be made to bring the headrest 600 closer to the occupant's head to provide better support.In another example, the setting can be adjusted if the occupant wishes to sit upright or drive in an active posture.

[0024] In another exemplary embodiment, the headrest 600 can also move rearward along its longitudinal axis, i.e., toward the rear of the vehicle. Such an adjustment is useful if the occupant wishes to recline the seat assembly or create more space between their head and the headrest 600. In such an exemplary embodiment, the transverse element 608 can move rearward when the wire 610 disengages from the plurality of notches 636, thereby increasing the distance between the headrest 600 and the occupant's head. This can allow the occupant to assume a more relaxed seating position, for example, if the occupant is a passenger.

[0025] The transverse element 608 comprises a body 618 with two sides: a first side 622 and an opposing second side 624. Each side includes corresponding slots, such as a first slot 628 on the first side 622 and a second slot 632 on the second side 624, which allow the wire 610 to pass through and engage with both sides of the transverse element 608. The transverse element 608 also includes a plurality of notches 636, which serve as engagement points for the wire 610. In one embodiment, the plurality of notches 636 facilitates a locking mechanism that holds the headrest 600 in place. In another embodiment, the wire 610 is a flexible element that is essential for the functionality of the headrest 600's movement.In this respect, the wire 610 extends between the actuating unit 604 and the transverse element 608 and runs through the respective slots on both sides of the transverse element 608. The wire 610 has a first end 640, which is connected to the actuator, and a second end 644, which engages with the second side 624 of the transverse element 608. It is understood that the wire 610 is designed with both curved and straight sections that interact with the notches 636 on the transverse element 608. The wire 610 is configured to control the locking and unlocking of the headrest assembly 602.

[0026] As shown, the headrest assembly 602 is in the first state. In one embodiment, the first state is a locking state of the wire 610, which means that the wire 610 is securely engaged with the plurality of notches 636 on the transverse element 608.

[0027] As shown, in the locked state, the multitude of linear sections of wire 610 are positioned in the corresponding notches 636, thereby restricting the movement of the transverse element 608. In such a configuration, the headrest assembly 602 is locked and prevents forward or backward movement along the first axis 612. The locking engagement provides support and safety for the vehicle occupant. The engagement and disengagement of the multitude of notches enables a smooth and controlled movement mechanism of the headrest 600. In addition, the multitude of curved and linear sections of wire 610 increase its flexibility, ensure reliable engagement in the notches, and thus prevent unintentional movement or misalignment of the headrest 600.The functional arrangement of the actuating unit 604 and the wire 610 enables easy and controlled handling of the headrest 600 by the vehicle occupant and eliminates previous problems such as squeaking, rattling and excessive part movement.

[0028] In the depicted Fig. Figure 7 is a schematic representation of a cross-sectional view of the headrest 600 in a second state according to a further exemplary embodiment of the present disclosure. In one embodiment, the second state is an unlocked state in which the wire 610 is released from the plurality of notches 636, thereby enabling controlled movement of the headrest assembly 602. As shown, the actuating unit 604 comprises the button assembly and the actuator and is operatively coupled to the transverse element 608, which is part of the headrest assembly 602. The actuating unit 604 is configured such that, in response to the pressing of the button assembly, it exerts a force on the wire 610 via the actuator, thereby moving it from the first state to the second state. The wire 610 is configured to pass through both the first slot 628 and the second slot 632 of the transverse element 608.The wire 610 has both curved and linear sections designed to engage in or disengage from the plurality of notches 636 on the body 618 of the transverse element 608. In one embodiment, the plurality of notches 636 comprises at least a first notch 646 and a second notch 650. In the unlocked state, the first notch 646 and the second notch 650 are disengaged from the plurality of linear sections of the wire 610, allowing the transverse element 608 to move freely in at least one of the forward or backward directions along the first axis 612, which corresponds to the longitudinal axis of the vehicle.

[0029] In this unlocked state, the actuator of the actuating unit 604 exerts a force on the first end 640 of the wire 610, causing the wire 610 to move in a second direction. The curved sections of the wire 610 allow for precise displacement (X), enabling the wire 610 to move within the locking mechanism in a controlled manner. This displacement causes a subsequent movement of the wire in a third direction, which is necessary for engaging and disengaging the wire from the multiple notches 636. When the wire 610 is disengaged, the transverse element 608 can move freely and adjust the position of the headrest 602 in the desired direction. The multiple linear sections of the wire 610 are configured to engage and disengage smoothly from the multiple notches 636, providing a secure locking mechanism when locked and precise control when unlocked.It is understood that the design also controls the tolerance value of the movement, allowing the headrest 600 to move in a controlled and repeatable manner without excessive play or unintentional movement.

[0030] The in the Fig. 8A and Fig. The schematic figures shown in Figure 8B illustrate the movement of the wire 804 and 806 of the headrest assembly 602 from the first state to the second state according to a further exemplary embodiment of the present disclosure. As shown, the wire 804 is in the locked state and the wire 806 is in the unlocked state. The wire 804 and the wire 806 are the same wire, which alternates between the locked and unlocked states. The wire 804, 806 comprises a first curved section 812, a first linear section 816, a second curved section 820, a third linear section 824, and a fourth curved section 830. In the locked state, the first linear section 816 and the third linear section 824 of the wire are engaged with the first notch 646 and the second notch 650, respectively. This intervention secures the headrest 600 in its desired position.In the unlocked state, the fourth curved section 828 of the wire is rotated about a pivot point 830, thereby releasing the first linear section 816 and the third linear section 824 from the first notch 646 and the second notch 650. This unlocking allows the headrest 600 to move freely and in a controlled manner forwards or backwards along the longitudinal axis of the vehicle.

[0031] The successively arranged sections of the first curved section 812, the first linear section 816, the second curved section 820, the third linear section 824, and the fourth curved section 828 allow the wire 804, 806 to transition smoothly between the locked and unlocked states, thereby minimizing friction and ensuring precise movement. In one embodiment, when the button assembly is pressed, the actuator exerts a force on the fourth curved section 828, releasing the first linear section 816, the second curved section 820, and the third linear section 824 from the first notch 646 and the second notch 650.

[0032] In one exemplary embodiment, the movement initiated by the actuator allows a controlled displacement of approximately 5 mm in both the vertical (Y-axis) and horizontal (X-axis) directions, as shown. This controlled movement ensures that the headrest 600 can be adjusted with minimal effort and high accuracy. In another embodiment, the curved sections 812, 820, 828 allow the wire 804, 806 to bend and twist smoothly, thus avoiding friction with the plurality of notches or other components, which is necessary to maintain the mechanism during repeated use. In yet another embodiment, the design can reduce wear on both the wire 804, 806 and the plurality of notches, thereby improving the durability of the headrest 600.In one embodiment, the linear sections 816, 824 can provide stability and rigidity when engaged with the plurality of notches. The technical benefit of the wire construction 804, 806 is its ability to provide high tolerance levels during movement, since the predefined displacement ensures precise headrest adjustments without causing unwanted play or rattling.

[0033] In a first aspect, the present disclosure provides a headrest assembly. The headrest assembly comprises a transverse element, an actuating unit, and a wire. The transverse element is configured to be movable in at least one of the following directions: forward or backward along a first axis. The transverse element includes a plurality of notches configured to retain a wire. The actuating unit is functionally connected to the transverse element and the wire. The actuating unit is configured to exert a force on the wire. The wire is functionally connected to the transverse element and the actuating unit. The wire comprises a first end, a plurality of curved sections, a plurality of linear sections, and a second end.The multitude of linear sections is configured to engage or disengage with the multitude of notches in response to the force exerted by the actuator on the first end, causing the wire to move from a first state to a second state to allow controlled movement of the headrest assembly in one or more directions.

[0034] In one embodiment, the forward direction is a direction of travel along a longitudinal axis of a vehicle.

[0035] In one embodiment, the first state is a locking state of the wire and the second state is the unlocking state of the wire.

[0036] In one embodiment, the actuating unit further comprises a button assembly operatively connected to an actuator and configured to exert force on the actuator. The actuator is configured to operatively connect to the button assembly, the actuator being configured to move the first end of the wire in response to the force exerted by the button assembly.

[0037] In one embodiment, the actuator is configured such that, when the actuating unit is pressed, it exerts force against a pivot point on a curved section under the plurality of curved sections of the wire, such that the wire is configured to release itself from the plurality of notches and transition from the locked state to the unlocked state.

[0038] In one embodiment, the actuator is configured to release the wire when the actuating unit is released, so that the wire is configured to engage in the plurality of notches and move from the unlocked state to the locked state.

[0039] In one embodiment, the multitude of curved sections and the multitude of linear sections of the wire enable a predefined displacement of the wire in a second direction, so that the predefined displacement allows a movement of a section of the wire in a third direction.

[0040] In one embodiment, the plurality of curved sections and the plurality of linear sections of the wire are configured to provide a predefined operating force and control a tolerance value of the movement of the headrest assembly.

[0041] In a second aspect, the present disclosure provides a headrest comprising a trim cover, a cushion, and a headrest assembly. The trim cover is configured to cover at least part of the headrest assembly. The cushion is configured to be positioned between the trim cover and a transverse element. The headrest assembly comprises the transverse element, which is configured to be movable forward or backward along a first axis with respect to one or more support posts. The transverse element includes a plurality of notches configured to retain a wire. The actuating unit is functionally connected to the transverse element and the wire. The actuating unit is configured to exert a force on the wire. The wire is functionally connected to the transverse element and the actuating unit.The wire comprises a first end, a plurality of curved sections, a plurality of linear sections, and a second end. The plurality of linear sections is configured to engage or disengage with the plurality of notches in response to the force exerted on the first end by the actuator, causing the wire to move from a first state to a second state to allow controlled movement of the headrest assembly in one or more directions.

[0042] In a third aspect, the present disclosure provides for a headrest comprising an actuating unit and a headrest assembly. The actuating unit comprises a button assembly operatively connected to an actuator and configured to exert a force on the actuator. The actuator is configured to operatively connect the button assembly to a transverse element, the actuator being configured to move a first end of a wire in response to the force exerted by the button assembly. The headrest assembly comprises the transverse element, which is configured to be movable in at least one of two directions: forward or backward along a first axis.The transverse element comprises a body, a first side, and a second side opposite the first side, wherein the first side includes a first slot and the second side a second slot, as well as a plurality of notches configured to engage with or disengage from the wire. The wire is functionally connected to the transverse element and the actuator, comprising a first end and a second end such that the first end is configured to pass through the first slot and engage with the actuator, and the second end is configured to pass through the second slot and engage with the second side of the transverse element. The wire comprises a plurality of curved sections and a plurality of linear sections.The multitude of linear sections is configured to engage or disengage with the multitude of notches in response to the force exerted by the actuator on the first end, causing the wire to move from a first state to a second state to allow controlled movement of the headrest assembly in one or more directions.

[0043] In one embodiment, the first direction is a direction of travel along a longitudinal axis of a vehicle.

[0044] In one embodiment, the first state is a locking state of the wire and the second state is the unlocking state of the wire.

[0045] In one embodiment, the plurality of notches further comprises a first notch and a second notch configured to be located next to the first notch on the body, and wherein the first notch and the second notch are configured to engage with or disengage from the wire.

[0046] In one embodiment, the wire comprises a first curved section, a first linear section, a second curved section, a third linear section, and a fourth curved section. In such an embodiment, the first curved section, the first linear section, the second curved section, the third linear section, and the fourth curved section are configured to be arranged sequentially.

[0047] In one embodiment, the actuator is configured such that when the button assembly is pressed, it exerts force against a pivot point on the fourth curved section, such that the first linear section, the second curved section, and the third linear section of the wire are configured to release from the first notch and the second notch and move from the first state to the second state.

[0048] In one embodiment, the actuator is configured to release the wire when the key assembly is released, such that the first linear section, the second curved section, and the third linear section of the wire are configured to engage the first notch and the second notch, respectively, and move from the second state to the first state.

[0049] In one embodiment, the multitude of curved and linear sections of the wire allows for a predefined displacement of the wire in a second direction. In another embodiment, the predefined displacement of the wire allows for movement of the wire in a third direction.

[0050] In one embodiment, the multitude of curved sections and the multitude of linear sections of the wire are configured to enable a predefined operating force and control a tolerance value of the movement of the headrest assembly.

[0051] The Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 to Fig.The eight examples are merely intended not to unduly limit the scope of the claims contained herein. A person skilled in the art will recognize many variations, alternatives, and modifications of embodiments of the present disclosure.

[0052] While exemplary embodiments are described above, it is not intended that these embodiments describe all possible forms according to the disclosure. In this respect, the words used in the description are descriptive rather than limiting, and it is assumed that various modifications can be made without departing from the spirit and scope of the disclosure. Furthermore, the features of different embodiments can be combined to form further embodiments according to the disclosure.

Claims

[1] A headrest assembly (108, 204, 500, 602) comprising: a transverse element (208, 508, 608) configured to be movable in at least one of: a forward direction or a backward direction along a first axis (114, 212), wherein the transverse element comprises a plurality of notches (216, 526, 636), and wherein the plurality of notches is configured to retain a wire (222, 512, 804, 806); an actuating unit (120, 228, 604) which is operatively connected to the transverse element and the wire, wherein the actuating unit is configured to exert a force on the wire; and the wire which is operatively connected to the transverse element and the actuating unit, wherein the wire comprises a first end (234, 640), a plurality of curved sections (238), a plurality of linear sections (244) and a second end (248), and wherein the plurality of linear sections is configured to engage or disengage with the plurality of notches in response to the force exerted by the actuating unit on the first end, such that the wire moves from a first state to a second state to enable controlled movement of the headrest assembly in one or more directions. [2] A headrest assembly (108, 204, 500, 602) according to claim 1, wherein the forward direction is a direction of travel along a longitudinal axis of a vehicle. [3] A headrest assembly (108, 204, 500, 602) according to claim 1, wherein the first state is a locking state of the wire (222, 512, 804, 806) and the second state is the unlocking state of the wire. [4] A headrest assembly (108, 204, 500, 602) according to claim 1, wherein the actuating unit (120, 228, 604) further comprises: a key assembly (258, 834) operatively connected to an actuator (262, 836) and configured to exert force on the actuator; and the actuator is configured to be operatively connected to the key assembly, wherein the actuator is configured to move the first end (234, 640) of the wire (222, 512, 804, 806) in response to the force exerted by the key assembly. [5] A headrest assembly (108, 204, 500, 602) according to one of the preceding claims, wherein the actuator (262, 836) is configured such that when the actuating unit (120, 228, 604) is pressed, it exerts the force on a pivot point (266) on a curved section (270) under the plurality of curved sections (238) of the wire (222, 512, 804, 806), such that the wire is configured to release from the plurality of notches (216, 526, 636) and move from the locked state to the unlocked state. [6] A headrest assembly (108, 204, 500, 602) according to one of the preceding claims, wherein, upon release of the actuating unit (120, 228, 604), the actuator (262, 836) is configured such that the wire (222, 512, 804, 806) is released, so that the wire is configured to engage in the plurality of notches (216, 526, 636) and move from the unlocked state to the locked state. [7] A headrest assembly (108, 204, 500, 602) according to one of the preceding claims, wherein the plurality of curved sections (238) and the plurality of linear sections (244) of the wire (222, 512, 804, 806) enables a predefined displacement of the wire in a second direction, such that the predefined displacement enables a movement of a section of the wire in a third direction. [8] A headrest assembly (108, 204, 500, 602) according to any of the preceding claims, wherein the plurality of curved sections (238) and the plurality of linear sections (244) of the wire (222, 512, 804, 806) are configured to provide a predefined operating force and control a tolerance value of the movement of the headrest assembly. [9] A headrest (104), comprising: a trim cover configured to cover at least part of a headrest assembly (108, 204, 500, 602); a cushion configured to fit between the trim cover and a cross member (208, 508, 608); and the headrest assembly, wherein the headrest assembly comprises the transverse element configured to be movable in at least one direction forward or backward along a first axis (114, 212) with respect to one or more support posts, wherein the transverse element comprises a plurality of notches (216, 526, 636), and wherein the plurality of notches is configured to retain a wire (222, 512, 804, 806); an actuating unit (120, 228, 604) which is operatively connected to the crossbeam element and the wire, wherein the actuating unit is configured to exert a force on the wire; and the wire which is operatively connected to the transverse element and the actuating unit, wherein the wire comprises a first end (234, 640), a plurality of curved sections (238), a plurality of linear sections (244) and a second end (248, 644), and wherein the plurality of linear sections is configured to engage or disengage with the plurality of notches in response to the force exerted by the actuating unit on the first end, such that the wire moves from a first state to a second state to enable controlled movement of the headrest assembly in one or more directions. [10] A headrest (600), comprising: an actuating unit (120, 228, 604), wherein the actuating unit a key assembly (258, 834) which is operatively connected to an actuator (262, 836) and configured to exert a force on the actuator, and the actuator is configured to be operatively connected to the key assembly and a transverse element (208, 508, 608), wherein the actuator is configured to move a first end (234, 640) of a wire (222, 512, 804, 806) in response to the force exerted by the key assembly; a headrest assembly (108, 204, 500, 602), wherein the headrest assembly the transverse element comprises a transverse element configured to be movable in at least one of two directions: a forward direction or a backward direction along a first axis (114, 212), wherein the transverse element comprising a body (618), a first side (622) and a second side (624) opposite the first side, wherein the first side comprises a first slot (628) and the second side comprises a second slot (632), and a variety of notches (216, 526, 636) configured to engage or disengage with the wire; and the wire which is operatively connected to the transverse element and the actuator, and wherein the wire comprises the first end and a second end (248, 644) such that the first end is configured to pass through the first slot and engage with the actuator, and the second end is configured to pass through the second slot and engage with the second side of the transverse element, and wherein the wire comprises a plurality of curved sections (238) and a plurality of linear sections (244), and wherein the plurality of linear sections is configured to engage or disengage with the plurality of notches in response to the force exerted on the first end by the actuator, such that the wire moves from a first state to a second state to enable controlled movement of the headrest assembly in one or more directions. [11] A headrest (600) according to claim 10, wherein the first direction is a direction of travel along a longitudinal axis of a vehicle. [12] A headrest (600) according to one of the preceding claims, wherein the first state is a locking state of the wire (222, 512, 804, 806) and the second state is the unlocking state of the wire. [13] A headrest (600) according to one of the preceding claims, wherein the plurality of notches (216, 526, 636) further comprises a first notch (646) and a second notch (650) configured to be located next to the first notch on the body (618), and wherein the first notch and the second notch are configured to engage or disengage with the wire (222, 512, 804, 806). [14] A headrest (600) according to claim 10, wherein the wire (222, 512, 804, 806) comprises a first curved section (812), a first linear section (816), a second curved section (820), a third linear section (824) and a fourth curved section (828), wherein the first curved section, the first linear section, the second curved section, the third linear section and the fourth curved section are configured to be arranged in a sequential manner. [15] A headrest (600) according to one of the preceding claims, wherein the actuator (262, 836) is configured such that when the button assembly (258, 834) is pressed, it exerts force on a pivot point (830) on the fourth curved section (828) such that the first linear section (816), the second curved section (820) and the third linear section (824) of the wire (222, 512, 804, 806) are configured to release from the first notch (646) and the second notch (650) and move from the first state to the second state. [16] A headrest (600) according to one of the preceding claims, wherein the actuator (262, 836) is configured to release the wire (222, 512, 804, 806) when the button assembly (258, 834) is released, such that the first linear section (816), the second curved section (820) and the third linear section (824) of the wire are configured to engage with the first notch (646) and the second notch (650) and move from the second state to the first state. [17] A headrest (600) according to one of the preceding claims, wherein the plurality of curved sections (238) and the plurality of linear sections (244) of the wire (222, 512, 804, 806) enables a predefined displacement (X) of the wire in a second direction and wherein the predefined displacement of the wire enables a movement (Y) of the wire in a third direction. [18] A headrest (600) according to any of the preceding claims, wherein the plurality of curved sections (238) and the plurality of linear sections (244) of the wire (222, 512, 804, 806) is configured to enable a predetermined operating force and to control a tolerance value of the movement of the headrest assembly (108, 204, 500, 602).

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