Reversible headrest and vehicle seat

Abstract

The utility model relates to a turnover headrest, its characterized in that, turnover headrest includes: the plug stick, its structure is used for fixing on the seat back to install turnover headrest on the seat back, headrest body can be turned over between the stowed position and the open position relative to the plug stick in the unlocking state of turnover headrest, headrest body can be used for supporting the head of the passenger in the open position, linkage promotes the unlocking mechanism, its structure is used for, when turnover headrest is in its stowed position, can be carried out linkage promotion unlocking to turnover headrest through the pivot of seat back, and the unlocking mechanism is prohibited, its structure is used for, when turnover headrest is in its open position, prohibits linkage promotion unlocking mechanism to carry out linkage promotion unlocking to turnover headrest. Technical effect includes: through setting the unlocking mechanism, can realize the turnover headrest in the open position not being again linkage promotion unlocking, to avoid producing the uncomfortable unlocking noise. The utility model still relates to a vehicle seat.

Description

Technical Field

[0001] This utility model relates to a flip-up headrest and a vehicle seat. Background Technology

[0002] Some car seat headrests are flip-up, also known as fold-down headrests, which can flip between a stowed position and an open position to support the occupant's head. However, they need to be unlocked internally using an unlocking mechanism before they can be flipped.

[0003] The flip-up headrest can be installed on the backrest, which also functions as a large armrest. The headrest unlocks as the backrest pivots from its backrest position to the armrest position, offering convenience and a premium feel. However, this automatic unlocking also produces some noise. While this sound serves as an unlocking prompt when needed, it becomes an annoying noise if the headrest unlocks during the backrest pivoting process when it's not required to be unlocked again. Utility Model Content

[0004] The purpose of this invention is to provide a flip-up headrest and a vehicle seat, which can solve at least one of the problems mentioned above.

[0005] To achieve the above objectives, this utility model proposes a flip-up headrest (e.g., for vehicle seats), characterized in that the flip-up headrest comprises:

[0006] A plug rod, configured to be fixed to a seat back for mounting a flip-up headrest on the seat back;

[0007] The headrest body, in the unlocked state of the flip headrest, can flip relative to the insert rod between a retracted position and an open position. In the open position, the headrest body can be used to support the occupant's head.

[0008] A linkage-activated unlocking mechanism is configured such that, when the flip-up headrest is in its retracted position, the pivoting of the seat back can trigger the unlocking of the flip-up headrest; and

[0009] The unlocking mechanism is configured to prevent the linkage-activated unlocking mechanism from unlocking the flip headrest when the flip headrest is in its open position.

[0010] The technical effects achievable here include, but are not limited to: by setting a mechanism to prevent unlocking, the flip headrest, which is already in the open position, will not be triggered to unlock again during the pivoting of the seat back, so as to avoid generating unpleasant unlocking noise.

[0011] Advantageously, the unlocking restriction mechanism includes a retainer that is pivotally connected to the headrest body on one hand and directly or indirectly connected to the insert rod on the other hand. When the headrest body flips relative to the insert rod from a retracted position to an open position, the retainer correspondingly pivots from its released position to its active position. In the released position, the retainer allows the linkage-activated unlocking mechanism to unlock the flipped headrest, while in the active position, the linkage-activated unlocking mechanism is prohibited from unlocking the flipped headrest.

[0012] Advantageously, the unlocking prevention mechanism includes a connector that is pivotally connected to the retainer on one hand and directly or indirectly connected to the insert on the other hand, wherein, when the headrest body flips relative to the insert from a retracted position to an open position, the retainer is pivoted from its released position to its active position by actuation of the retainer by the connector.

[0013] Advantageously, the connector is slidably pivotally connected to the retainer.

[0014] Advantageously, the unlocking prevention mechanism includes a fixing member that is fixed to the insertion rod on one hand and pivotally connected to the connector on the other.

[0015] Advantageously, the fastener is slidably and pivotally connected to the connector.

[0016] Advantageously, the flip headrest has an unlocking hinge that can rotate between a locked position and an unlocked position. A linkage unlocking tab is provided on the unlocking hinge in a manner that prevents rotation relative to it.

[0017] The linkage-driven unlocking mechanism includes a pushing unlocking component. The pushing unlocking component has an initial position. When the pushing unlocking component moves along a first direction from its initial position past the linkage unlocking pull tab, it can actuate the linkage unlocking pull tab to swing and drive the unlocking shaft to rotate from the locked position to the unlocked position.

[0018] The push-unlocking member has a prohibited unlocking position, and the retaining member can hold the push-unlocking member in the prohibited unlocking position in its working position. When the push-unlocking member moves along the first direction past the linkage unlocking pull tab in the prohibited unlocking position, it cannot cause the linkage unlocking pull tab to swing.

[0019] Advantageously, the transition of the push unlocking member from the initial position to the locked unlocking position is achieved by pivoting the retaining member from the released position to the active position, or by moving the push unlocking member toward the retaining member in the active position along a second direction opposite to the first direction.

[0020] Advantageously, the push-unlocking member has a push-unlocking portion, which, when the push-unlocking member moves in the initial position along the first direction past the linkage unlocking tab, can use its push-unlocking portion to actuate the linkage unlocking tab to swing, and

[0021] A pushing part is fixed on the push-unlocking part. The retaining member can keep the push-unlocking member in the prohibited unlocking position by pushing the pushing part in its working position, so that when the push-unlocking member moves along the first direction in the prohibited unlocking position and passes the linkage unlocking pull tab, it cannot use its push-unlocking part to cause the linkage unlocking pull tab to swing.

[0022] Advantageously, the retainer has an actuating portion that, in the actuating position of the retainer, can hold the push-unlocking member in the prohibited unlocking position by pressing the push portion with its lower end face.

[0023] Advantageously, after the push unlocking member moves along a second direction opposite to the first direction to contact the actuating portion of the retaining member, the push unlocking member can be switched from the initial position to the locked unlocking position by the inclined surface of the actuating portion adjacent to the lower end face of the actuating portion pressing the pushing portion.

[0024] Advantageously, in the holding position, the lower end face of the actuating part is oriented parallel to the first direction along which the pushing unlocking member moves.

[0025] Advantageously, in the active position of the retainer, the free end of the active part extends at least to be aligned with the linkage unlocking pull tab in a direction perpendicular to the first direction.

[0026] Advantageously, in the holding position, the actuating part holds the pushing unlocking part of the pushing unlocking part below the linkage unlocking pull tab.

[0027] Advantageously, the linkage-driven unlocking mechanism further includes a push plate body, the push unlocking element being pivotally mounted on the push plate body, the push plate body being connected to the seat back via a cable and being able to be pulled along a first direction by the cable through the pivoting of the seat back.

[0028] Advantageously, the push-unlocking member is rotatable between the initial position and the locked-unlocking position via a pivot axis, and the push portion is configured to extend outward from the push-unlocking member in a direction parallel to the pivot axis.

[0029] Advantageously, the linkage-driven unlocking mechanism further includes a first elastic element, which stores force when the push plate body is pulled by the cable to move in a first direction, and when the cable releases the push plate body, the push plate body returns to its original position in a second direction opposite to the first direction based on the return force of the first elastic element.

[0030] Advantageously, the linkage-driven unlocking mechanism further includes a second elastic element, which is charged when the push unlocking member pivots from the initial position to the prohibited unlocking position, and when the push unlocking member is not held by the retaining member, the push unlocking member pivots from the prohibited unlocking position to the initial position based on the return force of the second elastic element.

[0031] Advantageously, during the pivoting process of the seat backrest forward, the cable can first pull the push plate body to the farthest first position, and then release the push plate body so that it moves back to the second position under the action of the return force of the first elastic member. In the second position of the push plate body, the push unlocking part is located in front of, directly below or behind the linkage unlocking pull tab in the first direction.

[0032] Advantageously, when the push-unlock part is located behind the linkage unlock pull tab and the flip headrest is in the open position, the push-unlock member is held in its prohibited unlock position by the retainer.

[0033] To achieve the above objectives, the present invention also proposes a vehicle seat, characterized in that the vehicle seat has a flip-up headrest according to the present invention, the flip-up headrest being mounted on the seat back of the vehicle seat by means of its insert rod.

[0034] Advantageously, the seat back of the vehicle seat is pivotable between a backrest position and an armrest position. Attached Figure Description

[0035] The present invention will now be explained in more detail with reference to the accompanying drawings and embodiments, but the present invention is not limited to the embodiments described in the drawings and detailed below. The drawings are as follows:

[0036] Figure 1 This invention illustrates the use of a flip-up headrest on the back of the middle seat of a vehicle's rear seats according to an embodiment of the present invention.

[0037] Figure 2 This shows the middle seat backrest being used as an armrest in the armrest position;

[0038] Figures 3a to 3b The flip-up headrest is shown in both a perspective view and a rear view.

[0039] Figure 4aThe headrest cover of the flip-up headrest is shown in a 3D diagram;

[0040] Figure 4b The headrest insert and flipping mechanism of the flip headrest are shown in a 3D view;

[0041] Figure 5 A schematic enlarged view shows the linkage unlocking tab on the unlocking hinge;

[0042] Figure 6 A schematic breakdown shows the main components of the linkage-driven unlocking mechanism;

[0043] Figure 7 A schematic cross-section shows the operational states of the locking mechanism and the unlocking actuator;

[0044] Figure 8 The schematic three-dimensional diagram separately illustrates the operational states of the locking mechanism and the unlocking actuator;

[0045] Figure 9 A schematic 3D representation of the push-to-unlock mechanism;

[0046] Figure 10 The retainer is shown schematically in three dimensions;

[0047] Figure 11 The connector is shown schematically in three dimensions;

[0048] Figure 12 The fastener is shown schematically in three dimensions;

[0049] Figure 13 The main components of the linkage-driven unlocking mechanism are schematically shown in a side sectional view;

[0050] Figure 14 The main components of the linkage-activated unlocking mechanism and the unlocking-prohibition mechanism are schematically shown in a three-dimensional diagram;

[0051] Figure 15 The components of the linkage-driven unlocking mechanism and the unlocking-prevention mechanism are schematically shown in the assembly drawing;

[0052] Figure 16 The linkage-activated unlocking mechanism and the unlocking-prevention mechanism inside the flip-up headrest are schematically shown in a 3D diagram;

[0053] Figure 17 A schematic enlargement shows the cable securing the adjuster on the back of the middle seat;

[0054] Figure 18 The illustration shows the process of the middle seat back pivoting from its backrest position to the armrest position, then pivoting back to the backrest position, and then pivoting again to the armrest position;

[0055] Figure 19aThe illustration schematically shows the contrast between the activation and deactivation of the unlocking mechanism and the deactivation mechanism during the pivoting of the middle seat back from its backrest position to its armrest position.

[0056] Figure 19b The illustration schematically shows the contrast between the activation and deactivation of the unlocking mechanism and the activation / deactivation mechanism during the process of pivoting the middle seat backrest to the armrest position and then pivoting it back from the armrest position to the backrest position.

[0057] Figure 20 This illustration shows a comparison of the states of the middle seat back and the cable as the middle seat back pivots from its backrest position to the armrest position.

[0058] Figure 21a This schematically illustrates the process of the flip-up headrest pivoting from the open position to the stowed position after being manually unlocked; and

[0059] Figure 21b Schematic illustration of the relationship with Figure 21a The state of the flip-up headrest corresponds to the state change of the retaining element. Detailed Implementation

[0060] The following describes illustrative embodiments of the present invention. In this specification, various systems, structures, and devices are schematically depicted in the accompanying drawings for illustrative purposes only, and not all features of actual systems, structures, and devices are described. For example, well-known functions or structures are not described in detail to avoid unnecessary detail that could obscure the present invention. It should be understood that in any practical application, many specific implementation decisions need to be made to achieve the specific goals of the developer or user, and system-related and industry-related limitations need to be followed. These specific goals may vary depending on the practical application. Furthermore, it should be understood that while such implementation decisions are complex and time-consuming, they are routine tasks for those skilled in the art who will benefit from the present invention.

[0061] The terms and phrases used herein should be understood and interpreted in accordance with the understanding of those skilled in the art. The consistent use of terms or phrases herein is not intended to imply a specific definition, i.e., a definition different from the common and conventional meaning understood by those skilled in the art. For terms or phrases intended to have a specific meaning, i.e., a meaning different from that understood by those skilled in the art, such specific definition will be explicitly listed in the specification, giving the specific definition of the term or phrase directly and unambiguously.

[0062] Unless otherwise required by the content, throughout the following description, the word “including” and its variations, such as “comprising” and “having”, will be interpreted in an open-ended, inclusive sense, that is, as “including but not limited to”.

[0063] See Figure 1 The flip-up headrest 1 according to this embodiment of the invention can be used on the middle seat back 2 of the rear seats of a vehicle, which is located between the left and right seat backs. Furthermore, the flip-up headrest 1 can also be used on other vehicle seats, such as ordinary individual seats.

[0064] The flip-up headrest 1 can be used in its Figure 1 The seat back 2 can pivot between a folded position (as the design position) closer to the top of the middle seat back 2 and an open position (as the use position) further away from the top of the middle seat back 2, which can be used to support the occupant's head. The middle seat back 2 can... Figure 1 The backrest position shown is used as the seat back (as designed position) and Figure 2 The handrail positions shown are pivoting between the handrail positions (as one of the usage positions).

[0065] During the pivoting motion of the middle seat backrest 2 from the backrest position to the armrest position, the flip headrest 1 has already been unlocked by the linkage actuation unlocking mechanism, which will be described in detail below. Figure 1 The collapsible position shown will automatically flip to... Figure 2 The open position is shown. Therefore, at the armrest position of the middle seat back 2, the flip-up headrest 1 can support the armrest from the front, preventing it from being suspended and unstable. Furthermore, when a hidden table is installed at the front of the armrest, the flip-up headrest 1 in the open position can accommodate the forward extension of the hidden cup holder. It is also conceivable that when the flip-up headrest 1 is in the open position to accommodate this movement, the front seats can seamlessly connect with the front of the armrest when reclined into a bed, forming a larger "bed" together.

[0066] Figures 3a to 3b The flip-up headrest 1 is illustrated by perspective and rear view, respectively. Figure 4a and Figure 4b The housing cover 107 of the flip headrest 1, the headrest insert rod in the installed state, and the flipping mechanism 104 are shown in perspective.

[0067] As can be seen here, the flip-up headrest 1 includes a headrest body 101 and a headrest insert with two vertical rods 102 and one horizontal rod 103. The two vertical rods 102 of the headrest insert are fixedly inserted into the middle seat back 2. The flip-up headrest 1 has a flipping mechanism 104, which is fixed to the headrest body 101 on one hand and pivotally hinged to the horizontal rod 103 of the headrest insert on the other. Thus, by flipping the flipping mechanism 104, the flip-up headrest 1, specifically the headrest body 101, can pivot between a folded position and an open position.

[0068] The flipping mechanism 104 has an unlocking pivot 105 that is rotatable between an initial position, or a locked position and an unlocked position. In the locked position of the unlocking pivot 105, the flipping mechanism 104 (locked by its corresponding internal structure) and therefore the headrest body 101 cannot pivot relative to the crossbar 103; while in the unlocked position of the unlocking pivot 105, the flipping mechanism 104 (released by its corresponding internal structure) and therefore the headrest body 101 can pivot relative to the crossbar 103.

[0069] The unlocking mechanism 104 can be unlocked and the headrest 1 (specifically its headrest body 101) can be unlocked by rotating the unlocking shaft 105 from the locked position to the unlocked position using either a known manual actuation unlocking mechanism or a linkage actuation unlocking mechanism described below. After actuation or release of the unlocking shaft 105, the unlocking shaft 105 can automatically rotate back from the unlocked position to the locked position, for example, based on the return force of the shaft return spring 106.

[0070] In some embodiments, when the flip headrest 1 is in the stowed position and the unlocking hinge 105 and therefore the flipping mechanism 104 are unlocked, the flipping mechanism 104 can pivot relative to the crossbar 103 under the return force of its return torsion spring 110, and simultaneously drive the headrest body 101 to pivot, thereby automatically pivoting the flip headrest 1 into its open position. When the flip headrest 1 is in the open position and the unlocking hinge 105 and therefore the flipping mechanism 104 are manually unlocked, the flip headrest 1 can be manually flipped from the open position to its stowed position (see...). Figure 21a ).

[0071] The internal structure of the flipping mechanism that unlocks the flipping mechanism 104 and thus the entire flipping headrest 1 by unlocking the rotation of the pivot 105 is known in itself and is not a protected point of this utility model, so it will not be described in detail here. It is disclosed by way of example in patent documents CN201910350795.1 and CN201711230248.7.

[0072] See Figure 3b The flip-up headrest 1 can have a left unlock button 3 and a right unlock button 4 symmetrically arranged on its left and right sides. These two unlock buttons 3 and 4 can form part of a manual unlocking mechanism. By pressing either unlock button 3 or 4, the manual unlocking mechanism can be activated, thus manually unlocking the flip-up headrest 1. Alternatively, one or more unlock buttons can be used for manual unlocking. When the middle seat backrest 2 is used as a backrest, the manually unlocked flip-up headrest 1 can automatically disengage from its... Figure 1 The folded position shown is flipped to the open position to support the occupant's head.

[0073] The following is combined Figures 5 to 21b This paper details the structure and working principle of the linkage-driven unlocking mechanism and the unlocking-prohibition mechanism in this embodiment of the utility model.

[0074] See Figure 5 The unlocking shaft 105 of the flipping mechanism 104 is fixedly provided with a linkage unlocking pull tab 109 on one side in a non-rotatable manner. The linkage unlocking pull tab 109 is provided with an eccentric pushing surface 1091 that is pushed during the unlocking actuation process.

[0075] See Figures 6 to 16 The linkage-driven unlocking mechanism includes an unlocking push plate 8, which has a push plate body 801. The push plate body 801 is fixedly connected to a pull cable 9 (which is configured as, for example, a Bowden cable) at its front end. By pulling the pull cable 9, the push plate body 801 can be pulled forward in a first direction within a guide groove 10 on the headrest cover 107 of the headrest body 101. The guide groove 10 can be laterally limited by two opposing wall plates 100 fixed to the headrest cover 107 (see [link]). Figure 15 A push plate body return spring 11 (as the first elastic element in this embodiment) is provided between the push plate body 801 and the guide groove 10. The push plate body return spring 11 (configured as a compression spring in this embodiment, but may also be configured as a tension spring in other embodiments) is fixedly stopped at the front end of the guide groove 10 and at the rear end of the push plate body 801 (see [link]). Figure 15 When the push plate body 801 is pulled forward by the cable 9, the push plate body 801 moves forward in the first direction against the return force of the push plate body return spring 11. When the push plate body 801 is released by the cable 9, the push plate body 801 is moved backward in the second direction opposite to the first direction based on the return force of the push plate body return spring 11.

[0076] See Figure 9 and Figures 13 to 15The unlocking push plate 8 also includes a push unlocking member 802 pivotally connected to the push plate body 801 via a pivot shaft 8020. The push unlocking member 802 has a push unlocking part 8021. In the initial position where the unlocking push plate 8 is not pulled by the cable 9, the push unlocking part 8021 is located at the leftmost position in the guide groove 10 and its forward-oriented push unlocking surface is oriented toward the pushing surface 1091 of the linkage unlocking pull tab 109. When the push unlocking member 802 is moved forward in a first direction by the push plate body 801 away from the initial position, the push unlocking surface of the push unlocking part 8021 can contact and push the pushing surface 1091 of the linkage unlocking pull tab 109, causing the linkage unlocking pull tab 109 to rotate. The linkage unlocking pull tab 109 simultaneously drives the unlocking pivot 105 to rotate from the locked position to the unlocked position, thereby actuating the unlocking of the flip headrest 1. After unlocking is completed, the pusher unlocking component 802 can be driven by the pusher plate body 801 to move forward in the first direction, passing the linkage unlocking pull tab 109 and entering in front of it. After passing, the linkage unlocking pull tab 109 is driven by the unlocking pivot 105 to automatically rotate in the opposite direction to its locking position, and then locks the flip headrest 1 again.

[0077] See Figure 9 and Figures 13 to 15 The push-unlocking member 802 also has a limiting portion 8022 provided on the other side of the pivot shaft 8020, which can abut against the push plate body 801 in the initial position of the push-unlocking member 802 to prevent the push-unlocking member 802 from rotating when the push-unlocking part 8021 pushes the linkage unlocking pull tab 109. An eccentric return connection point 8023 is provided on the push-unlocking member 802, for example, its limiting portion 8022. The unlocking member return spring 803 (in this embodiment, as a second elastic element, configured as a tension spring) is fixed at one end to the return connection point 8023 on the limiting portion 8022 and at the other end to the push plate body 801. By the return force of the unlocking member return spring 803, the limiting portion 8022 can be held against the push plate body 801, thus holding the push-unlocking member 802 and its push-unlocking part 8021 in their initial positions.

[0078] When the unlocking push plate 8, which is in front of the linkage unlocking pull tab 109, moves backward in the second direction under the return force of the push plate body return spring 11, and the pushing unlocking member 802 is about to pass the linkage unlocking pull tab 109, the side of the pushing unlocking part 8021 of the pushing unlocking member 802 opposite to the pushing unlocking surface is pushed by the side of the linkage unlocking pull tab 109 opposite to the pushing surface 1091, and pivots against the return force of the lock member return spring 803 until the pushing unlocking member 802 moves backward and completely passes the linkage unlocking pull tab 109. The pushing unlocking member 802 then returns to its initial position based on the return force of the unlocking member return spring 803.

[0079] from Figure 16 and Figure 17 It can be seen that one end of the cable 9 is fixedly connected to the unlocking push plate 8, and the other end is fixedly connected to the eccentric connection point O1 of the adjuster 12 of the middle seat back 2, which is eccentric to the adjuster axis 121. This eccentric connection point O1 can be set on the connecting piece 13 fixed relative to the seat cushion. Therefore, during the pivoting process of the middle seat back 2 between its backrest position and armrest position, the end of the cable 9 connected to the unlocking push plate 8 will pull the unlocking push plate 8 with the pivoting movement of the middle seat back 2, thereby actuating the unlocking pivot 105 to unlock the flip headrest 1, thus realizing the linkage actuation of the flip headrest 1 to unlock through the pivoting movement of the middle seat back 2.

[0080] As described above, the push unlocking member 802 is pivotally mounted on the push plate body 801 via the pivot shaft 8020. When the push unlocking member 802 is not manipulated by an external force, the push unlocking member 802 is held in its initial position where it can be actuated and unlocked by the return force of the unlocking member return spring 803. When an external force is applied to the push unlocking member 802 in the opposite direction to the return force of the unlocking member return spring 803, the push unlocking member 802 can overcome the return force of the unlocking member return spring 803 and pivot. After the external force disappears, the push unlocking member 802 pivots back into its initial position where it can be actuated and unlocked based on the return force of the unlocking member return spring 803.

[0081] As a result, when the seat backrest 2 is pivoted, whenever the push-unlocking member 802, which is in its initial position, moves forward in the first direction from its position behind the linkage unlocking tab 109 based on the pull of the cable 9, it will push the linkage unlocking tab 109 and trigger the linkage unlocking. However, this unlocking process is usually only necessary when it is necessary to unlock the folded headrest 1 in the retracted position to put it into the open position. But for the folded headrest 1, which is already in the open position, this re-activation of the linkage unlocking is unnecessary and will also generate unpleasant noise due to the collision of parts during the unlocking process.

[0082] Therefore, the linkage-driven unlocking mechanism of this utility model is also equipped with an unlocking prohibition mechanism. This unlocking prohibition mechanism is configured to prevent the push unlocking member 802 from actuating and unlocking the flip headrest 1 when the flip headrest 1 is in the open position. Here, an external force can be applied to the push unlocking member 802 to make it leave the initial position where actuation and unlocking are possible.

[0083] The unlocking mechanism may include a pushing part 1001 provided on the push-unlocking member 802, which is configured here as a pushing rod extending laterally from the push-unlocking part 8021 of the push-unlocking member 802. A clearance groove 1002 may be provided on one of the wall panels 100, hereinafter referred to as the first wall panel 100, which laterally limits the guide groove 10 (see...). Figure 15 The pushing part 1001 extends laterally through the clearance groove 1002 to reach the opposite side of the first wall panel 100 to the guide groove 10. When the unlocking member 802 is pushed to move in the first or second direction and to pivot between the initial position and the unlocking prohibited position, the clearance groove 1002 allows the pushing part 1001 to move within it without motion interference.

[0084] The unlocking mechanism may include a retaining member 1000 that cooperates with the push portion 1001 of the unlocking member 802. The retaining member 1000 is designed to be in its retaining position when the flipped headrest 1 is in its open position (see [link to relevant documentation]). Figure 7 The retaining member 1000, in its retaining position, can hold the push-unlocking member 802 in a prohibited unlocking position different from its initial position, in such a way that the retaining member 1000 applies a pushing force to the pushing portion 1001 of the push-unlocking member 802, causing the push-unlocking member 802 to pivot away from its initial position where it can actuate unlocking and enter the prohibited unlocking position, where it remains. When the push-unlocking member 802 is held in its prohibited unlocking position, the push-unlocking member 802 will not actuate to unlock when it moves along the first direction past the linkage unlocking pull tab 109, for example, it will not contact the linkage unlocking pull tab 109. In contrast, when the push-unlocking member 802 is in its initial position, the push-unlocking member 802 will contact and actuate to unlock when it moves along the first direction past the linkage unlocking pull tab 109.

[0085] In this embodiment, the retainer 1000 is configured as a generally L-shaped retaining rod. The retainer 1000 is pivotally connected to the headrest body 101 via a pivot portion 1004 on the first wall plate 100, which laterally limits the guide groove 10. The retainer 1000 is disposed on the side of the first wall plate 100 opposite to the guide groove 10, i.e., on the same side as the pressing portion 1001. The retainer 1000 has an actuating portion 1005 and an actuating portion 1006 located on both sides of the pivot portion 1004. The retainer 1000 can pivot between its released position and its actuated position. The retaining member 1000 is always released in its released position, meaning that its actuating part 1005 cannot act on the pushing part 1001 of the pushing unlocking member 802, thus not affecting the return of the pushing unlocking member 802 to its initial position and its retention in the initial position. However, in its active position, the retaining member 1000 can act on the pushing part 1001 of the pushing unlocking member 802 with its actuating part 1005, thereby pivoting and retaining the pushing unlocking member 802 in its prohibited unlocking position, thus preventing the pushing unlocking member 802 from actuating the unlocking pull tab 109. Therefore, compared to the released position of the retaining member 1000, in the active position of the retaining member 1000, the actuating part 1005 of the retaining member 1000 is pivoted closer to the pushing part 1001 of the pushing unlocking member 802, or in other words, forms a smaller angle with the first direction.

[0086] See Figure 7 In the active position of the retaining member 1000, the active portion 1005 of the retaining member 1000, specifically its lower end face 1011, extends substantially parallel to the first or second direction. The active portion 1005 of the retaining member 1000, with its lower end face 1011, pushes downwards the pushing portion 1001 of the unlocking member 802 to hold the unlocking member 802 in its prohibited unlocking position. The front end of the active portion 1005 of the retaining member 1000 extends forward to the linkage unlocking pull tab 109 to ensure that, in the active position of the retaining member 1000, the unlocking member 802 is always held in the prohibited unlocking position as long as it is behind the linkage unlocking pull tab 109. It is also conceivable that the active portion 1005 of the retaining member 1000, in its active position, will hold the unlocking member 802 in the prohibited unlocking position at least at the location of the linkage unlocking pull tab 109. Therefore, when the retainer 1000 is in its active position, the unlocking member 802 is pushed forward in the first direction by the pull cable 9 and passes the linkage unlocking pull tab 109. Because it is kept in the prohibited unlocking position, it will not trigger the unlocking of the linkage unlocking pull tab 109. For example, it cannot contact the linkage unlocking pull tab 109 at this time.

[0087] The retainer 1000's actuating portion 1005 can form a slope 1013 in front of its lower end face 1011. In the actuating position of the retainer 1000, when the push unlocking member 802 moves from the front direction of the actuating portion 1005 to the actuating portion 1005 along the second direction, the slope 1013 of the actuating portion 1005 can first contact the pushing part 1001 of the push unlocking member 802 and pivot the push unlocking member 802 from the initial position to the prohibited unlocking position by pushing the pushing part 1001 downward. Subsequently, it is held in the prohibited unlocking position by the lower end face 1011 of the actuating portion 1005.

[0088] See Figure 8 and Figure 14 In the released position of the retaining member 1000, the push-unlocking member 802 is released and is in its initial position. The actuating portion 1005 of the retaining member 1000, specifically its lower end face 1011, pivots upward to form a larger angle with the first or second direction. When the push-unlocking member 802 is in its leftmost position (i.e., not pulled by the cable 9), the pushing portion 1001 of the push-unlocking member 802 can stop at the intersection of the actuating portion 1005 and the actuating portion 1006 to limit the travel of the push-unlocking member 802, but this is not mandatory. The actuating portion 1005 of the retaining member 1000 releases the pushing portion 1001 of the push-unlocking member 802 at least at the position of the linkage unlocking tab 109, so that when the push-unlocking member 802 moves forward past the linkage unlocking tab 109, it is in its initial position where it can be actuated for unlocking.

[0089] In order for the retainer 1000 to pivot from its release position to its active position when the headrest 1 is flipped from the folded position to the open position, the retainer 1000 can be directly or indirectly connected, for example, pivotally connected to the headrest insert rod by its actuating part 1006, so that the retainer 1000 can pivot at the same time when the headrest body 101 drives the pivoting part 1004 to flip together.

[0090] In this embodiment, the retainer 1000 is exemplarily designed such that its actuating part 1006 can be indirectly connected to the headrest insert via the connector 1007 and the fixing part 1010 described below. Specifically,

[0091] The unlocking mechanism may include a connector 1007, configured herein as a substantially linearly extending connecting rod, the connector 1007 having its first end hinged, in this case, slidably hinged, to the actuating portion 1006 that pushes the unlocking member 802. For this purpose, see [reference needed]. Figure 10 and Figure 11The actuating portion 1006 of the push-unlocking member 802 is provided with a groove 1008, while the connecting member 1007 has a pivot 1009 at its first end that can be inserted into and slidably hinged therein in the groove 1008. The pivot 1009 is configured in two parts to facilitate insertion into the groove 1008 during installation. In some embodiments, the pivot 1009 may be located at the actuating portion 1006 of the push-unlocking member 802, while the groove 1008 may be located at the first end of the connecting member 1007. In some embodiments, the hinged connection between the first end of the connector 1007 and the actuation part 1006 of the push-unlock member 802 can be configured as a fixed (i.e., non-sliding) hinged connection. That is, a pivot shaft 1009 is provided at one of the actuation part 1006 of the push-unlock member 802 and the first end of the connector 1007, while a cylindrical pivot hole is provided at the other of the actuation part 1006 of the push-unlock member 802 and the first end of the connector 1007, wherein the pivot shaft 1009 can only rotate in the pivot hole.

[0092] The unlocking mechanism may include a fastener 1010, which is fixed, for example welded, to the crossbar 103 of the headrest insert and is, for example, formed in a sheet-like manner. A connector 1007 is hinged, in this case, fixedly hinged to the fastener 1010 at its second end opposite to the first end. For this purpose, see [reference needed]. Figure 11 and Figure 12 The fixing member 1010 has a pivot hole 1011 on its free end, which is partially open to facilitate the insertion of a pivot shaft 1012 of the connector 1007 during installation. The connector 1007 has a pivot shaft 1012 at its second end that can be inserted into and rotated within the pivot hole 1011. In some embodiments, the pivot shaft 1012 can be located at the fixing member 1010, while the pivot hole 1011 is located at the second end of the connector 1007. In some embodiments, the hinged connection between the second end of the connector 1007 and the fixing member 1010 can be configured as a sliding hinged connection, that is, the pivot shaft 1012 is located at one of the second ends of the fixing member 1010 and the connector 1007, while a groove 1008 is located at the other of the second ends of the fixing member 1010 and the connector 1007, wherein the pivot shaft 1012 can rotate and slide in the groove 1008.

[0093] The connector 1007 can be configured such that, in the retracted position of the flip headrest 1, the connector 1007 holds the retainer 1000 in its released position; during the flipping of the flip headrest from its retracted position to its open position, the retainer 1000 automatically pivots from its released position to its active position based on the pull of the connector 1007; in the open position of the flip headrest 1, the connector 1007 holds the retainer 1000 in its active position, thereby the retainer 1000 can hold the push unlocking member 802 in its prohibited unlocking position to prevent the push unlocking member 802 from undesirably triggering the flip headrest 1 to unlock again in the open position of the flip headrest 1.

[0094] Figure 18 The diagram illustrates the process of the middle seat backrest 2 pivoting from its backrest position to the armrest position (during which the flip-up headrest 1 is unlocked and moves from its retracted position to its open position), then pivoting from the armrest position to the backrest position (during which the flip-up headrest 1 remains in its open position), and then pivoting again from its backrest position to the armrest position (during which the flip-up headrest 1 remains in its open position). Eight diagrams showing the sequence of movement of the middle seat backrest 2, indicated by arrows, are visible here.

[0095] The first image from the top left shows the middle seat back 2 in the backrest position and the flip-up headrest 1 in the stowed and locked position.

[0096] The second picture from the left at the top shows the middle seat back 2 in a position that has been pivoted forward at a certain angle. At this time, the cable 9 has, for example, pulled the unlocking push plate 8 to move forward in the first direction until the pushing unlocking surface of its pushing unlocking part 8021 contacts the pushing surface 1091 of the linkage unlocking pull tab 109.

[0097] The third picture from the left at the top shows the middle seat back 2 in a position where it has pivoted forward at a larger angle. At this time, the cable 9 has pulled the unlocking push plate 8, which actuates the linkage unlocking pull tab 109 to unlock the flip headrest 1. Therefore, the flip headrest 1 automatically rotates from the folded position to the open position (the arrow indicates its opening direction).

[0098] The fourth picture from the top left shows the middle seat back 2 reaching its armrest position. At this time, the flip headrest 1 is in the open position and is locked based on the automatic return of the unlocking pivot 105 and the linkage unlocking pull tab 109.

[0099] Next, by holding the flip-up headrest 1 in the open position, the middle seat back 2 can be manually pivoted from the armrest position shown in the fourth diagram from the left above, passing through the middle position shown in the first diagram from the right below, until it returns to the backrest position shown in the second diagram from the right below. During the process of pivoting the middle seat back 2 from its armrest position back to its backrest position, the flip-up headrest 1 remains in the open position, and the retaining member 1000 in the active position prevents the flip-up headrest 1 from being triggered and unlocked by the linkage unlocking mechanism. This avoids the flip-up headrest 1 being triggered and unlocked again during this return process, which would cause inconvenience to the occupant.

[0100] Next, the middle seat backrest 2 can be pivoted downwards from the backrest position shown in the second diagram from the right below, passing through the middle position shown in the third diagram from the right below, until it reaches the armrest position shown in the fourth diagram from the right below. During this process of pivoting the middle seat backrest 2 from its backrest position to its armrest position, the flip headrest 1 remains in the open position, and the retaining member 1000 in the active position prevents the flip headrest 1 from being triggered and unlocked by the linkage unlocking mechanism. This avoids the flip headrest 1 being triggered and unlocked again during this process, which would cause inconvenience to the occupant.

[0101] Figure 19a and Figure 19b The diagram illustrates the different states of the linkage actuation unlocking mechanism and the prohibition unlocking mechanism within the flip headrest 1 during the pivoting of the middle seat backrest 2 from its backrest position to its armrest position, and then from its armrest position back to its backrest position. The upper figures show the relative positions of the push unlocking element 802 and the linkage unlocking pull tab 109, while the lower figures show the corresponding positions of the retaining element 1000 in the upper figures.

[0102] See Figure 19a The first figure from the top and bottom left shows the initial state of the linkage actuation unlocking mechanism and the prohibition unlocking mechanism when the middle seat backrest 2 is in the backrest position and the flip headrest 1 is in the retracted position and locked. At this time, the push unlocking part 802 of the unlocking push plate 8 is in its initial position, and its push unlocking part 8021 is located at a certain distance to the left of the push surface 1091 of the linkage unlocking pull tab 109. Starting from this position, the middle seat backrest 2 is pivoted forward, and the cable 9, after being tightened, begins to apply a force F to the unlocking push plate 8 in the first forward direction to pull the unlocking push plate 8 to move in the first direction. At this time, since the flip headrest 1 is in the retracted position, the retaining member 1000 is in its released position, and the retaining member 1000 does not push down the push pressing part 1001 of the push unlocking part 802, so the push unlocking part 802 is in its initial position where it can actuate and unlock.

[0103] The second image from the top left and the first image from the bottom left show that as the middle seat backrest 2 pivots forward, the unlocking push plate 802, pulled by the cable 9, moves along the first direction until its unlocking surface 8021 contacts the pressing surface 1091 of the linkage unlocking pull tab 109, thus entering unlocking contact. At this time, since the flip headrest 1 is in the retracted position, the retaining member 1000 is in its released position, and the retaining member 1000 does not push down the pressing part 1001 of the unlocking push plate 802. Therefore, the unlocking push plate 802 is in its initial position where it can actuate and unlock.

[0104] The third image from the top left and the second image from the bottom left show that as the middle seat back 2 continues to pivot forward, the unlocking push plate 8's pushing unlocking member 802 continues to move along the first direction under the pull of the cable 9. This pushes the unlocking part 8021, actuating the linkage unlocking pull tab 109, causing the unlocking pivot 105 to rotate to its unlocking position. This unlocks the flip-up headrest 1, which will then automatically move from its retracted position to the open position. At this time, since the flip-up headrest 1 is still in the retracted position and the retaining member 1000 is still in its released position, the retaining member 1000 does not push down the pushing part 1001 of the pushing unlocking member 802. Therefore, the pushing unlocking member 802 remains in its initial position.

[0105] The fourth image from the top left and the third image from the bottom left show that as the middle seat back 2 continues to pivot forward, the unlocking push plate 8's pushing unlocking member 802 continues to move in the first direction under the pull of the cable 9 until it passes the linkage unlocking pull tab 109 and reaches its front. The linkage unlocking pull tab 109 and therefore the unlocking pivot 105 automatically rotate in the opposite direction to their locked position, and the flip headrest 1 is locked in its open position. At this time, the flip headrest 1 has flipped from its folded position to its open position (this can be seen from the change in the relative position between the headrest body 101 after flipping relative to the headrest insert and the fixing member 1010 on the headrest insert that remains stationary), and therefore the retaining member 1000 also pivots clockwise from its released position to its active position. However, the pushing part 1001 of the pushing unlocking member 802 has left the range of action of the retaining member 1000 and is not pushed downward, thereby pushing the unlocking member 802 to its initial position.

[0106] See Figure 19bAs shown in the first image from the top and bottom left, as the middle seat back 2 continues to pivot forward, the unlocking push plate 8's pushing unlocking member 802 continues to move along the first direction to its farthest position under the pull of the cable 9. At this time, the cable 9 has reached its maximum limit position, but the middle seat back 2 has not yet reached its armrest position. At this time, the flip headrest 1 is in the open position and therefore the retaining member 1000 is in its active position, but the pushing part 1001 of the pushing unlocking member 802 has left the active range of the retaining member 1000 and is not pushed downward, thus pushing the unlocking member 802 to its initial position;

[0107] The top and bottom second-to-left figures each comprise a set of two figures, illustrating two different implementations of the linkage mechanism that activates when the middle seat backrest 2 has pivoted forward to its armrest position. Here, after the cable 9 reaches its maximum rightward limit position, it releases the unlocking push plate 8 to the left along the second direction as the middle seat backrest 2 continues to pivot forward. The unlocking push plate 8 has moved a certain distance along the second direction under the return force of the push plate body return spring 11.

[0108] The first embodiment is shown in the upper figure of each of the two sets of figures. Referring to the upper figure of the upper set of figures, in the armrest position of the middle seat back 2, the push-unlock member 802 is positioned in front of (i.e., on the right side) of the linkage unlocking pull tab 109, which can be achieved by designing the travel of the pull cable 9. When the push-unlock member 802 moves forward during the subsequent pivoting of the middle seat back 2 towards the backrest position, it will not trigger the flip headrest 1 to unlock, avoiding unpleasant unlocking collision noise. Referring to the upper figure of the lower set of figures, the pushing part 1001 of the push-unlock member 802 does not enter the range of action of the retaining member 1000 and is not pushed downward, thereby pushing the unlock member 802 to its initial position.

[0109] The second embodiment is shown in the lower figure of each of the two sets of figures. Referring to the lower figure of the upper set of figures, in the armrest position of the middle seat back 2, the push unlocking member 802 has moved backward (i.e., to the left) past the linkage unlocking pull tab 109 to its rear. However, the retaining member 1000, which is in the active position at this time, holds the push unlocking member 802 in its prohibited unlocking position by acting on the pushing part 1001 of the push unlocking member 802. This prevents the flip headrest 1 from being triggered to unlock when the push unlocking member 802 moves forward during the subsequent pivoting of the middle seat back 2 to the backrest position, thus avoiding uncomfortable unlocking collision noise.

[0110] The third figure from the left above and below shows that when the middle seat back 2 is about to reach the backrest position during its pivoting process, the cable 9 releases the unlocking push plate 8 again, causing it to move backward along the second direction until the push unlocking part 8021 of the push unlocking member 802 is located directly below the linkage unlocking pull tab 109. At this time, the retaining member 1000, which is in the active position, begins to contact and act on the push pressing part 1001 of the push unlocking member 802, thereby rotating the push unlocking member 802 to its prohibited unlocking position.

[0111] As shown in the fourth figure from the left above and below, the middle seat backrest 2 has pivoted back to its backrest position. The unlocking push plate 8 has moved to its initial position in the second direction under the return force of the push plate body return spring 11. At this time, the retaining member 1000 in the active position keeps the push unlocking member 802 in its prohibited unlocking position by acting on the push part 1001 of the push unlocking member 802. Thus, when the middle seat backrest 2 is pivoted back to the armrest position again, the push unlocking member 802 moves forward without triggering the flip headrest 1 to unlock, thus avoiding noise disturbance to the occupants.

[0112] Figure 20 This diagram illustrates the different states of the middle seat backrest 2 and the cable 9 during the entire process of pivoting the middle seat backrest 2 from its backrest position to its armrest position. Five diagrams are shown here in sequence of motion, with the upper and lower diagrams of each diagram showing the corresponding states of the middle seat backrest 2, the flip-up headrest 1, and the cable 9, respectively.

[0113] The first figure shows the middle seat backrest 2 in the backrest position and the flip-up headrest 1 in the folded and locked position. At this time, the line connecting the cable 9 at the backrest fixing point O2 (where the cable 9 can slide) on the middle seat backrest 2, the adjuster axis 121, and the eccentric connection point O1 forms a triangle. There is a cable segment 901 between the backrest fixing point O2 and the eccentric connection point O1, but it is in a slack state.

[0114] Here, during the pivoting process of the middle seat backrest 2 between the backrest position and the armrest position, the adjusting device shaft 121 and the eccentric connection point O1 always remain in a fixed position relative to the seat cushion. Only the backrest fixing point O2 changes position relative to the seat cushion as the middle seat backrest 2 pivots.

[0115] The second figure shows that the middle seat backrest 2 pivots forward at an angle from the backrest position. At this time, the backrest fixing point O2 is farther away from the eccentric connection point O1, and the cable section 901 has entered a taut state.

[0116] The third figure shows that the middle seat backrest 2 continues to pivot forward. At this time, the line connecting the backrest fixing point O2, the angle adjuster axis 121, and the eccentric connection point O1 forms a straight line. At this time, the backrest fixing point O2 is farthest from the eccentric connection point O1. Therefore, the cable section 901 has entered its longest state. At the same time, the cable 9 has pulled the unlocking push plate 8 to move to the farthest position in the first forward direction. At this time, the cable 9 has reached its maximum limit position.

[0117] The fourth figure shows that the middle seat backrest 2 continues to pivot forward. At this time, the line connecting the backrest fixing point O2, the angle adjuster axis 121, and the eccentric connection point O1 forms a triangle. At this time, the backrest fixing point O2 is closer to the eccentric connection point O1 than in the third figure. Therefore, the cable section 901 is shorter than in the third figure. The cable 9 has been released and the unlocking push plate 8 moves backward along the second direction by a distance.

[0118] The fifth figure shows the middle seat backrest 2 pivoted forward to the armrest position. At this point, the backrest fixing point O2 is closer to the eccentric connection point O1 than in the fourth figure, so the cable segment 901 is shorter than in the third figure. The cable 9 has further released the unlocking push plate 8, which has moved a distance in the second direction. The cable segment 901 remains taut to maintain the position of the unlocking push plate 8 so that it has not returned to its initial position. Alternatively, it is conceivable that the cable segment 901 is relaxed again, and the unlocking push plate 8 has returned to its initial position. Furthermore, it is conceivable that if the middle seat backrest 2 is pivoted from the armrest position to the backrest position, the change in the state of the cable 9 is the reverse of the process shown in the lower figure of these five figures. However, the retaining member 1000 ensures that the flip-up headrest 1 in the open position will not be triggered to unlock again. Additionally, the fifth figure also shows the table 25 that has popped outward from the armrest position of the middle seat backrest 2.

[0119] Figure 21a This schematically illustrates the process of the flip-up headrest 1 pivoting from the open position to the stowed position after being manually unlocked; Figure 21b Schematic illustration of the relationship with Figure 21a The state of the flip-up headrest 1 corresponds to the state of the retainer 1000.

[0120] from Figure 21a As can be seen in the left image, the seat back 2 is in its backrest position, and the flip-up headrest 1 is in its open position. From Figure 21b As can be seen in the left image, with Figure 21a Corresponding to the left figure, the retaining member 1000 is in its active position, and the retaining member 1000 acts on the pushing part 1001, that is, pushes the pushing part 1001 downward, thereby keeping the push unlocking member 802 in its prohibited unlocking position.

[0121] from Figure 21aAs can be seen in the right image, the seat back 2 is still in its backrest position, and the flip headrest 1 has been manually unlocked and flipped from the open position to the folded position using an external force F. From Figure 21b As can be seen in the right image, with Figure 21a Corresponding to the right figure, as the flip headrest 1 flips, the retainer 1000 enters its released position, and the retainer 1000 can no longer act on the push part 1001 (which can still contact it), thereby pushing the unlocking part 802 to return to its initial position where it can be actuated and unlocked based on the return force of the unlocking part return spring 803.

[0122] The linkage-driven unlocking mechanism of this utility model enables the flip headrest 1 in the retracted position to be unlocked during the pivoting process of the middle seat backrest 2; while the unlocking prevention mechanism of this utility model ensures that the flip headrest 1 in the open position will not be unlocked again during the pivoting process of the middle seat backrest, so as to avoid generating uncomfortable unlocking noise.

[0123] Finally, it should be noted that the above embodiments are merely for understanding and explaining the present invention, and do not constitute a limitation on the scope of protection of the present invention. Those skilled in the art can make modifications or recombinations based on the above embodiments, and none of these modifications or recombinations depart from the scope of protection of the present invention.

Claims

1. A flip-up headrest, characterized in that, The flip-up headrest includes: A plug rod, configured to be fixed to a seat back for mounting a flip-up headrest on the seat back; The headrest body, in the unlocked state of the flip headrest, can flip relative to the insert rod between a retracted position and an open position. In the open position, the headrest body can be used to support the occupant's head. A linkage-activated unlocking mechanism is configured such that, when the flip-up headrest is in its retracted position, the pivoting of the seat back can trigger the unlocking of the flip-up headrest; and The unlocking mechanism is configured to prevent the linkage-activated unlocking mechanism from unlocking the flip headrest when the flip headrest is in its open position.

2. The flip-up headrest according to claim 1, characterized in that, The unlocking restriction mechanism includes a retainer that is pivotally connected to the headrest body on one hand and directly or indirectly connected to the insertion rod on the other hand. When the headrest body flips from a retracted position to an open position relative to the insertion rod, the retainer pivots accordingly from its release position to its active position. In the release position of the retainer, the linkage-activated unlocking mechanism is allowed to unlock the flipped headrest, while in the active position of the retainer, the linkage-activated unlocking mechanism is prohibited from unlocking the flipped headrest.

3. The flip-up headrest according to claim 2, characterized in that, The unlocking prevention mechanism includes a connector that is pivotally connected to the retainer on one hand and directly or indirectly connected to the insert rod on the other hand. When the headrest body flips from a retracted position to an open position relative to the insert rod, the retainer is pivoted from its released position to its active position by actuation of the retainer by the connector.

4. The flip-up headrest according to claim 3, characterized in that, The connector is slidably and pivotally connected to the retainer.

5. The flip-up headrest according to claim 3, characterized in that, The unlocking prevention mechanism includes a fixing member that is fixed to the insertion rod on one side and pivotally connected to the connector on the other side.

6. The flip-up headrest according to claim 5, characterized in that, The fastener is slidably and pivotally connected to the connector.

7. The flip-up headrest according to claim 2, characterized in that, The flip headrest has an unlocking hinge that can rotate between a locked position and an unlocked position. A non-rotatable unlocking tab is provided on the unlocking hinge. The linkage-driven unlocking mechanism includes a pushing unlocking component. The pushing unlocking component has an initial position. When the pushing unlocking component moves along a first direction from its initial position past the linkage unlocking pull tab, it can actuate the linkage unlocking pull tab to swing and drive the unlocking shaft to rotate from the locked position to the unlocked position. The push-unlocking member has a prohibited unlocking position, and the retaining member can hold the push-unlocking member in the prohibited unlocking position in its working position. When the push-unlocking member moves along the first direction past the linkage unlocking pull tab in the prohibited unlocking position, it cannot cause the linkage unlocking pull tab to swing.

8. The flip-up headrest according to claim 7, characterized in that, The transition of the push unlocking member from the initial position to the locked unlocking position is achieved by pivoting the retaining member from the released position to the active position, or by moving the push unlocking member toward the retaining member in the active position along a second direction opposite to the first direction.

9. The flip-up headrest according to claim 7, characterized in that, The push-unlocking component has a push-unlocking part. When the push-unlocking component moves along the first direction in the initial position past the linkage unlocking tab, it can use its push-unlocking part to actuate the linkage unlocking tab to swing. A pushing part is fixed on the push-unlocking part. The retaining member can keep the push-unlocking member in the prohibited unlocking position by pushing the pushing part in its working position, so that when the push-unlocking member moves along the first direction in the prohibited unlocking position and passes the linkage unlocking pull tab, it cannot use its push-unlocking part to cause the linkage unlocking pull tab to swing.

10. The flip-up headrest according to claim 9, characterized in that, The retaining member has an actuating portion, which, in the actuating position, can hold the push-unlocking member in the prohibited unlocking position by pressing the pushing portion with its lower end face.

11. The flip-up headrest according to claim 10, characterized in that, After the push unlocking member moves along a second direction opposite to the first direction to contact the actuating part of the retaining member, the push unlocking member can be switched from the initial position to the locked unlocking position by the inclined surface of the actuating part adjacent to the lower end face of the actuating part pressing the pushing part.

12. The flip-up headrest according to claim 10, characterized in that, In the holding position, the lower end face of the actuating part is oriented parallel to the first direction along which the pushing unlocking member moves.

13. The flip-up headrest according to claim 10, characterized in that, In the active position of the retainer, the free end of the active part extends at least to be aligned with the linkage unlocking pull tab in a direction perpendicular to the first direction.

14. The flip-up headrest according to claim 10, characterized in that, In the holding position, the actuating part holds the pushing unlocking part of the pushing unlocking part below the linkage unlocking pull tab.

15. The flip-up headrest according to claim 9, characterized in that, The linkage-driven unlocking mechanism also includes a push plate body. The push unlocking component is pivotally mounted on the push plate body. The push plate body is connected to the seat back via a cable and can be pulled along a first direction by the cable through the pivoting of the seat back.

16. The flip-up headrest according to claim 15, characterized in that, The push-unlocking member is rotatable between the initial position and the locked position via a pivot axis, and the pushing part is configured to extend outward from the push-unlocking part in a direction parallel to the pivot axis.

17. The flip-up headrest according to claim 15, characterized in that, The linkage-driven unlocking mechanism also includes a first elastic element. When the push plate body is pulled by the cable and moves in a first direction, the first elastic element is charged. When the cable releases the push plate body, the push plate body moves back in a second direction opposite to the first direction based on the return force of the first elastic element.

18. The flip-up headrest according to claim 16, characterized in that, The linkage-driven unlocking mechanism further includes a second elastic element, which is charged when the push unlocking member pivots from the initial position to the prohibited unlocking position, and when the push unlocking member is not held by the retaining member, the push unlocking member pivots from the prohibited unlocking position to the initial position based on the return force of the second elastic element.

19. The flip-up headrest according to claim 17, characterized in that, During the pivoting process of the seat backrest forward, the cable can first pull the push plate body to the farthest first position, and then release the push plate body so that it moves back to the second position under the action of the return force of the first elastic element. In the second position of the push plate body, the push unlocking part is located in front of, directly below or behind the linkage unlocking pull piece in the first direction.

20. The flip-up headrest according to claim 19, characterized in that, When the push-unlock part is located behind the linkage unlock pull tab and the flip headrest is in the open position, the push-unlock member is held in its prohibited unlock position by the retainer.

21. A vehicle seat, characterized in that, The vehicle seat has a flip-up headrest according to any one of claims 1 to 20, the flip-up headrest being mounted on the seat back of the vehicle seat by means of its insert.

22. The vehicle seat according to claim 21, characterized in that, The seat back of the vehicle seat is pivotable between the backrest position and the armrest position.

Images