Vehicle seat headrest

Abstract

The utility model discloses a vehicle seat headrest relates to the field of car. The vehicle seat headrest includes base, sliding block and energy absorption module, and sliding block is used for connecting headrest front cover, and with base sliding cooperation, to form the sliding of headrest front cover in the first direction close or away from base, energy absorption module includes module main part and elastic buffer, and module main part and base sliding cooperation, and elastic buffer sets up between module main part and base, the process of headrest front cover stress in the first direction close base sliding, and sliding block can with module main part abut, and elastic buffer elastic deformation to absorb the kinetic energy of headrest front cover. The utility model provides seat headrest has better energy absorption effect.

Description

Technical Field

[0001] This utility model relates to the automotive field, and more specifically, to a vehicle seat headrest. Background Technology

[0002] To reduce the impact on the neck of occupants during rear-end collisions and minimize neck injuries, existing vehicle seat headrests typically contain foam pads. These foam pads are located at the front of the headrest cover. When an occupant's head impacts the headrest cover, the foam pads are compressed and deformed, thus absorbing some of the kinetic energy and cushioning the impact.

[0003] However, foam pads have poor energy absorption, often resulting in serious neck injuries to occupants during accidents. Utility Model Content

[0004] The purpose of this invention is to provide a seat headrest that has better energy absorption.

[0005] The embodiments of this utility model provide a technical solution:

[0006] A vehicle seat headrest, comprising:

[0007] Base;

[0008] A sliding block is used to connect the headrest front cover and slide in cooperation with the base to form a sliding motion of the headrest front cover toward or away from the base in a first direction;

[0009] An energy-absorbing module includes a module body and an elastic buffer. The module body is slidably engaged with the base, and the elastic buffer is disposed between the module body and the base.

[0010] As the headrest front cover slides towards the base under force in the first direction, the sliding block can abut against the main body of the module, and the elastic buffer can elastically deform to absorb the kinetic energy of the headrest front cover.

[0011] In an optional embodiment, one of the module body and the sliding block is provided with a plug-in part, and the other has a plug-in slot, wherein the plug-in part is plugged into the plug-in slot;

[0012] As the headrest front cover slides towards the base in the first direction under force, the module body abuts against the sliding block through the plug-in part or the plug-in slot.

[0013] In an optional embodiment, the plug-in portion is movably disposed on the module body and configured to move relative to the module body under force to exit or insert into the plug-in slot. When the plug-in portion exits the plug-in slot, the sliding block can move relative to the energy-absorbing module in the first direction.

[0014] The module body is also provided with an elastic retainer, which continuously applies elastic force to the plug-in part so that the plug-in part remains plugged into the plug-in slot without external force.

[0015] In an optional embodiment, the base has a latch frame, the first direction being the length direction of the latch frame, the latch frame having an opening on one side in a second direction, and the second direction forming an angle with the first direction;

[0016] The main body of the module extends into the latch frame through the opening and slides with the latch frame to form a sliding relationship between the two ends of the latch frame in the length direction.

[0017] In an optional embodiment, the module body is provided with limiting flanges and guide wedges on opposite sides in the third direction, and the guide wedges on the same side and the limiting flanges on the same side form a groove extending in the first direction.

[0018] The opening has protruding flanges on both sides of the third direction, and the two flanges extend into the two grooves respectively and slide in cooperation with the two grooves respectively.

[0019] In an optional embodiment, the vehicle seat headrest further includes an unlocking component, the unlocking component including a latch, the latch being movably disposed on the module body;

[0020] The sliding block has at least two locking slots, which are arranged sequentially in the first direction. The locking tongue is configured to be moved relative to the module body by force to exit or insert into one of the at least two locking slots.

[0021] When the latch is out of the lock slot, the sliding block can move relative to the energy-absorbing module in the first direction; when the latch is inserted into the lock slot, the module body abuts against the sliding block through the latch.

[0022] In an optional embodiment, the energy-absorbing module further includes an elastic reset member disposed between the latch and the module body, which continuously applies an elastic force to the latch so that the latch remains engaged with the lock groove without external force.

[0023] In an optional embodiment, the locking tongue is provided with a mating hole through the first direction;

[0024] The unlocking component also includes a pull rod extending in the first direction, the pull rod passing through the mating hole, and the pull rod being configured to drive the latch relative to the module body to move out of the lock groove when subjected to force.

[0025] In an optional embodiment, the module body has a guide groove, and the locking tongue slides in the guide groove to slide along the guide groove under force to exit or insert into the locking groove.

[0026] In an optional embodiment, one of the locking tongue and the module body has a limiting groove, and the other is provided with a limiting block. The limiting groove extends in a second direction, and the limiting block slides in conjunction with the limiting groove.

[0027] Compared to existing technologies, the headrest provided by this invention features an energy-absorbing module comprising a main body and an elastic buffer. The main body slides against the base, and the elastic buffer is positioned between the main body and the base. During a collision, the headrest cover abuts against the main body, and the sliding contact between the main body and the base allows for a certain elastic displacement relative to the base, causing the elastic buffer to deform elastically, resulting in better energy absorption. Therefore, the beneficial effects of the headrest provided by this invention include: improved energy absorption. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and therefore should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without any creative effort.

[0029] Figure 1 A schematic diagram of the structure of the vehicle seat headrest provided in the first embodiment of this utility model in practical application;

[0030] Figure 2 for Figure 1 A partial structural diagram of the seat headrest is shown;

[0031] Figure 3 for Figure 2 An exploded view of the structure shown;

[0032] Figure 4 for Figure 2 The diagram shows a partial structural view of the seat headrest when the energy absorption module is in its initial state.

[0033] Figure 5 for Figure 2 The diagram shows a partial structural view of the seat headrest when the energy-absorbing module is in a collapsed state.

[0034] Figure 6 for Figure 2 Another cross-sectional view of the seat headrest shown;

[0035] Figure 7 for Figure 6 Enlarged view of region A in the middle;

[0036] Figure 8 A partial structural schematic diagram of a vehicle seat headrest provided in the second embodiment of this utility model;

[0037] Figure 9 for Figure 8 The diagram shown is an exploded view of the vehicle seat headrest structure.

[0038] Figure 10 for Figure 8 The diagram shows a partial structural view of the seat headrest when the energy absorption module is in its initial state.

[0039] Figure 11 for Figure 8 The diagram shows a partial structural view of the seat headrest when the energy-absorbing module is in a collapsed state.

[0040] Figure 12 for Figure 8 Schematic diagram of the energy absorption module;

[0041] Figure 13 for Figure 8 Exploded view of the energy absorption module;

[0042] Figure 14 A partial structural schematic diagram of a vehicle seat headrest provided in the third embodiment of this utility model;

[0043] Figure 15 for Figure 14 An exploded view of the vehicle seat headrest shown;

[0044] Figure 16 A schematic diagram of the connection structure between the unlocking component and the energy absorption module when the latch is engaged with the lock slot;

[0045] Figure 17 for Figure 16 A cross-sectional view of a portion of the structure of the vehicle seat headrest in the shown state;

[0046] Figure 18 A schematic diagram of the connection structure between the unlocking component and the energy absorption module when the bolt is out of the lock slot;

[0047] Figure 19 for Figure 18 A cross-sectional view of a portion of the structure of the vehicle seat headrest in the shown state;

[0048] Figure 20 A schematic diagram of the unlocking push handle;

[0049] Figure 21 A schematic diagram of the connection structure between the return spring and the unlocking push handle;

[0050] Figure 22 for Figure 14 The diagram shows a partial cross-section of the vehicle seat headrest.

[0051] Figure 23 for Figure 14 The diagram shown is a partial structural schematic of the vehicle seat headrest when the energy absorption module is in its initial state.

[0052] Figure 24 for Figure 23 A cross-sectional view of the vehicle seat headrest in the indicated state;

[0053] Figure 25 for Figure 14 The diagram shown is a partial structural schematic of the vehicle seat headrest when the energy absorption module is in a collapsed state.

[0054] Figure 26 for Figure 25 The image shows a cross-sectional view of the vehicle seat headrest in the indicated state.

[0055] Icons: 100-Vehicle seat headrest; 110-Base; 111-Lock tongue frame; 112-Matching flange; 113-Mounting shaft; 120-Sliding block; 121-Lock groove; 122-Plug-in groove; 130-Headrest front cover; 140-Energy absorption module; 141-Module body; 1411-Plug-in part; 142-Elastic buffer; 144-Lock tongue; 145-Limiting flange; 146-Guide wedge; 147-Slide groove; 148-Fixing post; 149-Elastic reset part; 150-Guide groove; 151-Limiting groove; 152-Limiting block; 153-Matching hole; 154-Hanging part; 161-Unlock push handle; 162-Return spring; 163-Unlock button; 164-Shaft hole; 165-Hook part; 166-Pull rod part. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0057] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0058] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0059] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0060] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0061] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0062] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0063] First Embodiment

[0064] Please see Figure 1 , Figure 1 The diagram shown is a structural schematic of the vehicle seat headrest 100 provided in this embodiment in practical application.

[0065] The vehicle seat headrest 100 provided in this embodiment is applied to a car seat. This headrest can repeatedly absorb energy and has a better energy absorption effect.

[0066] Please refer to the following: Figure 2 and Figure 3 , Figure 2 The diagram shown is a partial structural schematic of the seat headrest. Figure 3 The diagram shown is an exploded view of part of the headrest structure of the seat.

[0067] The headrest provided in this embodiment includes a base 110, a sliding block 120, an energy-absorbing module 140, and a headrest front cover 130. It may also include a plug rod, a headrest rear cover, and other structures, which are not described in detail in this embodiment. The base 110 can be mounted on the car seat via the plug rod. The sliding block 120 connects to the headrest front cover 130 and slides in cooperation with the base 110, allowing the headrest front cover 130 to slide closer to or further away from the base 110 in a first direction. The energy-absorbing module 140 is installed between the base 110 and the sliding block 120, and can absorb some kinetic energy and buffer the impact force when the headrest front cover 130 is subjected to an impact.

[0068] It is understandable that, taking the vehicle as a reference, the first direction is the vehicle's forward and backward direction, which is... Figure 3 The direction indicated by the X-shaped arrow.

[0069] In practical applications, the occupant's head is positioned in front of the headrest cover 130. During a rear-end collision, due to inertia, the occupant's body moves forward synchronously with the car seat, causing the occupant's head to swing rapidly backward relative to the body, impacting and pressing against the headrest cover 130. Upon impact, the headrest cover 130 causes the sliding block 120 to slide backward and gradually approach the base 110. During this process, the energy-absorbing module 140 absorbs the kinetic energy of the headrest cover 130, buffering the impact and preventing the occupant's head from rapidly tilting backward and then swinging forward again, causing whiplash injury.

[0070] In this embodiment, the energy-absorbing module 140 includes a module body 141 and an elastic buffer 142. The main module body 141 is slidably engaged with the base 110, and the elastic buffer 142 is disposed between the module body 141 and the base 110. During the process of the headrest front cover 130 sliding towards the base 110 in the first direction under force, the elastic buffer 142 elastically deforms to absorb the kinetic energy of the headrest front cover 130.

[0071] Under normal circumstances, the elastic buffer 142 is in a relatively relaxed state, and the energy-absorbing module 140 is in its initial state. When a collision occurs, the headrest cover 130 is impacted by the occupant's head, causing the sliding block 120 and the module body 141 to slide backward relative to the base 110. During this process, the elastic buffer 142 located between the module body 141 and the base 110 is compressed to absorb the kinetic energy of the headrest cover 130 and achieve a buffering effect. The energy-absorbing module 140 is in a collapsed state.

[0072] Please refer to the following: Figure 4 and Figure 5 , Figure 4 The diagram shown is a cross-sectional view of a portion of the vehicle seat headrest 100 when the energy absorption module 140 is in its initial state. Figure 5 The image shown is a cross-sectional view of a portion of the vehicle seat headrest 100 when the energy absorption module 140 is in a collapsed state.

[0073] In this embodiment, the module body 141 and the sliding block 120 are detachably connected. The module body 141 is provided with a plug-in portion 1411, and the sliding block 120 has a plug-in groove 122, with the plug-in portion 1411 plugging into the plug-in groove 122. During the process of the headrest front cover 130 sliding towards the base 110 under force in the first direction, the module body 141 abuts against the sliding block 120 through the plug-in portion 1411.

[0074] It should be noted that, in another embodiment, the insertion part 1411 can also be disposed on the sliding block 120, and the insertion slot 122 can be correspondingly formed on the module body 141. Furthermore, the abutment structure between the module body 141 and the sliding block 120 can be adjusted and is not limited to the structure where the insertion part 1411 and the insertion slot 122 are inserted. For example, protrusions can be provided on both the module body 141 and the sliding block 120, and these protrusions can achieve mutual abutment during the sliding of the headrest front cover 130 towards the base 110 in the first direction under force.

[0075] Please refer to the following: Figure 6 and Figure 7 , Figure 6 The diagram shown is another cross-sectional view of the vehicle seat headrest 100. Figure 7 As shown Figure 6 An enlarged schematic diagram of region A in the middle.

[0076] In this embodiment, the base 110 has a latch frame 111, with the first direction being the length direction of the latch frame 111. The latch frame 111 has an opening on one side in a second direction, and the second direction forms an angle with the first direction. The module body 141 extends into the latch frame 111 through the opening and slides with the latch frame 111 to form a sliding relationship between the two ends of the latch frame 111 in the length direction.

[0077] In this embodiment, with the vehicle as a reference, the second direction is the vertical direction of the vehicle, i.e. Figure 6 The direction indicated by the Y-arrow. In other words, in this embodiment, the second direction is perpendicular to the first direction. In other embodiments, the second direction can be adjusted according to actual application conditions; for example, the second direction can also be a left-right direction.

[0078] like Figure 4 As shown, when the energy absorption module 140 is in the initial state, the module body 141 is in contact with the front inner wall of the locking tongue frame 111, and the module body 141 and the rear inner wall of the locking tongue frame 111 are spaced apart in the first direction. The elastic buffer 142 is disposed between the module body 141 and the rear inner wall of the locking tongue frame 111.

[0079] Understandably, driven by the sliding block 120, the module body 141 can slide from the front inner wall of the locking tongue frame 111 along the first direction to contact the rear inner wall. That is, the sliding stroke of the module body 141 determines the buffer stroke of the headrest front cover 130.

[0080] Therefore, in practical applications, the maximum buffer stroke of the headrest front cover 130 can be adjusted by adjusting the dimensions of the locking tongue frame 111 and the module body 141 in the first direction, according to actual needs. Furthermore, the energy absorption and buffering effect of the energy absorption module 140 can be adjusted by replacing the elastic buffer members 142 with different elastic strengths.

[0081] In this embodiment, the insertion groove 122 on the sliding block 120 is located above the module body 141, and the opening of the insertion groove 122 faces downward. One end of the insertion part 1411 extends upward along the second direction to insert into the insertion groove 122. Specifically, two teeth are provided on a wall surface of the sliding block 120 above the module body 141, arranged sequentially in the first direction, forming a wedge-shaped insertion groove 122 between the two teeth. Correspondingly, the end of the insertion part 1411 is also wedge-shaped, matching the shape of the insertion groove 122.

[0082] In the actual assembly process, the wedge-shaped insertion groove 122 can guide and position the insertion process of the wedge-shaped insertion part 1411, so that the insertion part 1411 can be quickly and smoothly inserted into the insertion groove 122, reducing the assembly difficulty and realizing the rapid assembly between the energy absorption module 140 and the sliding block 120.

[0083] Combination Figure 3 and Figure 7As shown, in this embodiment, for the assembly of the module body 141 and the latch frame 111, the module body 141 has limiting flanges 145 and guide wedges 146 protruding on opposite sides in the third direction. The guide wedges 146 on the same side and the limiting flanges 145 on the same side form a sliding groove 147 extending in the first direction. The opening of the latch frame 111 has mating flanges 112 protruding on opposite sides in the first direction. The two mating flanges 112 extend into the two sliding grooves 147 respectively and slide in cooperation with the two sliding grooves 147 respectively.

[0084] In this embodiment, with the vehicle as a reference, the third direction is the left-right direction of the vehicle, which is also the width direction of the latch frame 111, i.e. Figure 7 The direction indicated by the Z-arrow. In other words, in this embodiment, the first direction, the second direction, and the third direction are perpendicular to each other.

[0085] It is understandable that the minimum distance between the two guide wedges 146 in the third direction is less than the distance between the two mating flanges 112, while the maximum distance between them in the third direction is greater than the distance between the two mating flanges 112. Similarly, the maximum distance between the two limiting flanges 145 in the third direction is greater than the distance between the two mating flanges 112.

[0086] When assembling the module body 141 onto the latch frame 111, the module body 141 can be inserted into the opening of the latch frame 111 along the direction of the guide wedges 146. The multiple guide wedges 146 guide and position the module body 141 during insertion. As the guide wedges 146 pass through the two mating flanges 112, they compress the mating flanges 112, causing elastic deformation and accumulating elastic potential energy. When the guide wedges 146 pass over the mating flanges 112, the mating flanges 112 release their elastic potential energy and embed themselves into the corresponding grooves 147, thereby completing the assembly of the module body 141 onto the latch frame 111.

[0087] When the module body 141 is assembled on the locking tongue frame 111, the two mating flanges 112 on the locking tongue frame 111 are correspondingly embedded in the two sliding grooves 147 on the module body 141, thereby locking the module body 141 in the second direction and the third direction, ensuring that the module body 141 can slide smoothly and steadily in the first direction, thus ensuring that the buffering effect of the energy absorption module 140 is stable and reliable.

[0088] In order to further improve the smoothness of the sliding of the module body 141 in the first direction, in this embodiment, the distance between the two mating flanges 112 in the first direction is greater than the distance between the bottom walls of the two sliding grooves 147 in the third direction.

[0089] Preferably, the module body 141 has a fixing post 148 on the side opposite to the headrest front cover 130, and the elastic buffer 142 is a compression spring, one end of which is sleeved on the fixing post 148, and the other end abuts against the rear inner wall of the locking tongue frame 111.

[0090] It is understandable that both the fixing post 148 and the compression spring extend in the first direction. Before inserting the module body 141 into the latch frame 111, the end of the compression spring away from the module body 141 can be inserted into the latch frame 111. Then, the module body 141 can push the compression spring against the inner wall of the rear end of the latch frame 111, so that the compression spring is compressed to a certain extent until the module body 141 can be aligned with the opening of the latch frame 111. Then, the module body 141 is pressed into the latch frame 111, realizing the rapid assembly of the energy absorption module 140 and the base 110.

[0091] To further improve the stability of the assembly structure, a positioning structure can be set on the inner wall of the rear end of the locking tongue frame 111 to position the end of the compression spring away from the module body 141, preventing the end of the compression spring away from the module body 141 from coming out of the opening of the locking tongue frame 111.

[0092] Preferably, in this embodiment, the module body 141 and the plug-in part 1411 are integrally formed. In another embodiment, the module body 141 and the plug-in part 1411 can also be fixedly connected by welding, bonding or other methods.

[0093] In another embodiment, the plug-in portion 1411 can also be movable relative to the module body 141, that is, the plug-in portion 1411 is movably disposed on the module body 141 and configured to move relative to the module body 141 to exit or insert into the plug-in slot 122 under force. When the plug-in portion 1411 is exiting the plug-in slot 122, the sliding block 120 can move relative to the energy-absorbing module 140 in a first direction. When the plug-in portion 1411 is inserted into the plug-in slot 122, the module body 141 abuts against the sliding block 120 through the plug-in portion 1411.

[0094] In this embodiment, the module body 141 may also be provided with an elastic retainer, which continuously applies an elastic force to the plug-in portion 1411 so that the plug-in portion 1411 remains plugged into the plug-in slot 122 without the action of external force.

[0095] In other words, when assembled, the insertion part 1411 remains inserted into the insertion slot 122 under the action of the elastic retainer. As the headrest front cover 130 slides towards the base 110 under force in the first direction, the sliding block 120 and the insertion part 1411 push the module body 141 to slide along the locking tongue frame 111 and compress the elastic buffer 142, thereby absorbing the kinetic energy of the headrest front cover 130. When the insertion part 1411 exits the insertion slot 122 under the action of external force, the module body 141 cannot form contact with the sliding block 120, and the sliding block 120 can move freely relative to the energy-absorbing module 140 in the first direction.

[0096] Second Embodiment

[0097] Please refer to the following: Figure 8 and Figure 9 , Figure 8 The diagram shown is a partial structural schematic of the vehicle seat headrest 100 provided in this embodiment. Figure 9 The diagram shown is an exploded view of the structure of the headrest 100 of the vehicle seat.

[0098] Compared to the first embodiment, one difference in the vehicle seat headrest 100 provided in this embodiment is that it also includes an unlocking component. The unlocking component includes a locking tongue 144, which is movably disposed on the module body 141. The sliding block 120 has a locking groove 121. The locking tongue 144 is configured to move relative to the module body 141 to exit or insert into the locking groove 121 under force. When the locking tongue 144 is out of the locking groove 121, the sliding block 120 can move relative to the energy-absorbing module 140 in a first direction. The sliding engagement structure between the module body 141 and the base 110 of the vehicle seat headrest 100 provided in this embodiment is basically the same as that in the first embodiment.

[0099] It is understandable that the locking tongue 144 inserts into the locking groove 121 to achieve a detachable connection with the sliding block 120, thereby locking the relative movement of the sliding block 120 and the module body 141 in the first direction, ensuring that the locking tongue 144, the module body 141, and the sliding block 120 can move synchronously in the first direction. After the locking tongue 144 exits the locking groove 121, the connection between the module body 141 and the sliding block 120 is released, which is equivalent to unlocking the sliding block 120, allowing the sliding block 120 to move relative to the module body 141 in the first direction.

[0100] In practical applications, when assembling the vehicle seat headrest 100, after assembling the energy absorption module 140 onto the latch frame 111 on the base 110, a force can be applied to the latch 144 to move it out of the lock groove 121, so as not to obstruct the assembly of the sliding block 120 on the base 110, and to ensure that the sliding block 120 can be quickly assembled onto the base 110.

[0101] After the sliding block 120 is assembled with the base 110, the locking tongue 144 can move into the locking groove 121 inserted into the sliding block 120 under the action of external force, realizing the detachable connection between the energy absorption module 140 and the sliding block 120, thereby completing the assembly between the energy absorption module 140 and the sliding block 120. When it is necessary to remove the vehicle seat headrest 100 for maintenance or replacement of parts, force can also be applied to the locking tongue 144 to make it exit the locking groove 121, thereby unlocking the sliding block 120 and allowing the sliding block 120 to be easily removed from the base 110.

[0102] Please refer to the following: Figure 10 and Figure 11 , Figure 10 The figure shown is a cross-sectional view of the vehicle seat headrest 100 provided in this embodiment when the energy absorption module 140 is in its initial state. Figure 11 The diagram shown is a cross-sectional view of the vehicle seat headrest 100 provided in this embodiment when the energy absorption module 140 is in a collapsed state.

[0103] In this embodiment, the sliding block 120 has at least two locking grooves 121, which are arranged sequentially in the first direction. The at least two locking grooves 121 are used for selectively engaging with the locking tongue 144.

[0104] The sliding block 120 has multiple teeth protruding downward on a wall surface above the module body 141, arranged sequentially in the first direction, and a wedge-shaped locking groove 121 is formed between each two adjacent teeth.

[0105] It is understandable that multiple locking slots 121 are located at multiple different positions of the sliding block 120 in the first direction. Therefore, in practical applications, the relative position of the sliding block 120 and the base 110 in the first direction can be adjusted by adjusting the locking tongue 144 to engage with different locking slots 121, thereby adjusting the initial position of the headrest front cover 130 to meet the personalized needs of the occupants and improve the flexibility and comfort of use.

[0106] Specifically, during adjustment, the locking tongue 144 can be disengaged from the currently inserted locking slot 121. After disengagement, the sliding block 120 can be used to slide the headrest front cover 130 to the target position. Then, the locking tongue 144 can be moved back into the currently aligned locking slot 121 to relock the sliding block 120, thereby completing the adjustment of the headrest front cover 130's position in the front-back direction.

[0107] Please refer to the following: Figure 12 and Figure 13 , Figure 12 The diagram shown is a structural schematic of the energy absorption module 140 in this embodiment. Figure 13 The diagram shown is an exploded view of the energy absorption module 140.

[0108] To ensure the stability and reliability of the assembly structure, in this embodiment, the energy absorption module 140 also includes an elastic reset member 149. The elastic reset member 149 is disposed between the locking tongue 144 and the module body 141, and continuously applies elastic force to the locking tongue 144 so that the locking tongue 144 remains connected to one of the locking slots 121 without external force.

[0109] In this embodiment, the locking tongue 144 is slidably disposed on the module body 141, and the locking tongue 144 can slide relative to the module body 141 in a second direction. Specifically, the module body 141 has a guide groove 150 extending in the second direction, and the locking tongue 144 slides in cooperation with the guide groove 150 to slide along the guide groove 150 to exit or insert into the locking groove 121 under force.

[0110] The elastic reset member 149 is actually a tension spring. Both the locking tongue 144 and the module body 141 are provided with a hanging part 154. The tension spring extends in the second direction, with one end hanging on the hanging part 154 on the locking tongue 144 and the other end hanging on the hanging part 154 on the module body 141.

[0111] Considering that in practical applications, the locking tongue 144 may slide excessively and disengage from the guide groove 150, in order to limit the sliding stroke of the locking tongue 144 in the second direction, in this embodiment, the module body 141 has a limiting groove 151, the locking tongue 144 is provided with a limiting block 152, the limiting groove 151 extends in the second direction, and the limiting block 152 slides in cooperation with the limiting groove 151.

[0112] In practical applications, driven by the locking tongue 144, the limiting block 152 can slide between the two ends in the limiting groove 151. By limiting the sliding stroke of the limiting block 152 through the limiting groove 151, the sliding stroke of the locking tongue 144 is limited, thus preventing the locking tongue 144 from coming out of either end of the guide groove 150.

[0113] In another embodiment, the limiting groove 151 can be disposed on the locking tongue 144, and the corresponding limiting block 152 can be disposed on the module body 141. Alternatively, other mating structures can be used to limit the sliding stroke of the locking tongue 144.

[0114] It is understood that the unlocking component also includes other structures that are connected to the locking tongue 144 in a transmission manner. These structures can be set on the base 110 and used to drive the locking tongue 144 out of the locking groove 121 under force, thereby unlocking the sliding block 120.

[0115] Third Embodiment

[0116] Please refer to the following: Figure 14 and Figure 15 , Figure 14The diagram shown is a partial structural schematic of the vehicle seat headrest 100 provided in this embodiment. Figure 15 The diagram shown is an exploded view of the structure of the headrest 100 of the vehicle seat.

[0117] The vehicle seat headrest 100 provided in this embodiment also includes an unlocking component, which includes a locking tongue 144. The locking tongue 144 is movably disposed on the module body 141. The sliding block 120 has a locking groove 121. The locking tongue 144 is configured to move relative to the module body 141 under force to exit or insert into the locking groove 121.

[0118] With the latch 144 disengaged from the lock groove 121, the sliding block 120 can move relative to the energy-absorbing module 140 in a first direction. The sliding engagement structure between the module body 141 and the base 110 of the vehicle seat headrest 100 provided in this embodiment is basically the same as in the first embodiment, and the engagement structure between the latch 144 and the module body 141 is basically the same as in the second embodiment. An elastic reset member 149 is also provided between the latch 144 and the module body 141.

[0119] In practical applications, when assembling the vehicle seat headrest 100 provided in this embodiment, after assembling the energy absorption module 140 and the unlocking component to the latch frame 111 on the base 110, a force is applied to make the latch 144 slide into the guide groove 150 of the module body 141, which at least partially retracts into the module body 141, so as to avoid the assembly path of the sliding block 120 on the base 110 and ensure that the sliding block 120 can be quickly assembled.

[0120] Please refer to the following: Figures 16 to 19 , Figure 16 The diagram shows the connection structure between the unlocking component and the energy absorption module 140 when the latch 144 is inserted into the lock slot 121. Figure 17 As shown Figure 16 A cross-sectional view of a portion of the structure of the vehicle seat headrest 100 in its current state. Figure 18 The diagram shows the connection structure between the unlocking component and the energy absorption module 140 when the bolt 144 is out of the lock slot 121. Figure 19 As shown Figure 18 A sectional view of a portion of the structure of the vehicle seat headrest 100 in its current state.

[0121] After the sliding block 120 is assembled on the base 110, the force applied to the locking tongue 144 is removed. Under the action of the elastic reset member 149, the locking tongue 144 extends upward out of the guide groove 150 to complete the insertion with the corresponding locking groove 121.

[0122] When the position of the headrest cover 130 in the first direction needs to be adjusted, the locking tongue 144 is slid out of the locking groove 121 it is engaged with, releasing the locking of the sliding block 120. This allows the sliding block 120 to be forced to slide the headrest cover 130 to the target position. Then, the force is released, and the locking tongue 144, under the action of the elastic reset member 149, slides into the currently aligned locking groove 121 to relock the sliding block 120, thus completing the adjustment of the headrest cover 130's position in the front-rear direction.

[0123] In this embodiment, the unlocking assembly further includes an unlocking push handle 161, a return spring 162, and an unlocking button 163. The unlocking button 163 is disposed on the base 110. The unlocking push handle 161 is rotatably disposed on the base 110. The unlocking button 163 is movably disposed on the base 110 and connected to one end of the unlocking push handle 161. The other end of the unlocking push handle 161 is connected to the locking tongue 144. The return spring 162 is a tension spring, with one end connected to the unlocking push handle 161 and the other end connected to the base 110.

[0124] In practical applications, the occupant can press the unlock button 163 to push the unlock lever 161. Figure 16 The counterclockwise rotation, as shown in the diagram, causes the latch 144 to slide in the second direction and exit the lock groove 121, thus unlocking the sliding block 120. During this process, the tension spring is stretched to accumulate elastic potential energy. When the occupant removes the pressing force applied to the unlock button 163, the tension spring releases its elastic potential energy, pulling the unlock push handle 161 clockwise to the reset state, ready for the next unlocking operation.

[0125] Please refer to the following: Figure 20 and Figure 21 , Figure 20 The diagram shown is a structural schematic of the unlocking push handle 161. Figure 21 The diagram shows the connection structure between the return spring 162 and the unlocking push handle 161.

[0126] A shaft hole 164 is provided between the two ends of the unlocking push handle 161. A mounting shaft 113 is provided on the base 110 and passes through the shaft hole 164. When the occupant presses the unlocking button 163 or the return spring 162 releases its elastic potential energy, the unlocking push handle 161 can rotate around the mounting shaft 113. A hook portion 165 is provided between the end of the unlocking push handle 161 that connects to the unlocking button 163 and the shaft hole 164. One end of the return spring 162 is hooked on the hook portion 165, and the other end is hooked on the base 110.

[0127] Please refer to the following: Figures 22 to 26 , Figure 22 The diagram shown is a partial cross-sectional view of the vehicle seat headrest 100 provided in this embodiment. Figure 23The diagram shown is a partial structural schematic of the vehicle seat headrest 100 provided in this embodiment when the energy absorption module 140 is in its initial state. Figure 24 The image shows the headrest 100 of the vehicle seat. Figure 23 A sectional view in the state shown. Figure 25 The diagram shown is a partial structural schematic of the vehicle seat headrest 100 provided in this embodiment when the energy absorption module 140 is in a collapsed state. Figure 26 The image shows the headrest 100 of the vehicle seat. Figure 25 The sectional view shown.

[0128] In this embodiment, the end of the latch 144 furthest from the lock groove 121 extends out of the guide groove 150 and is provided with a mating hole 153, which penetrates the latch 144 in a first direction. The unlocking assembly also includes a pull rod 166, which is located at the end of the unlocking push handle 161 furthest from the unlocking button 163 and extends in the first direction, passing through the mating hole 153.

[0129] In this embodiment, one end of the pull rod 166 is connected to the unlocking push handle 161, and the other end passes through the mating hole 153 and is suspended in the air. In order to ensure that the unlocking component can always maintain a transmission connection with the locking tongue 144 after assembly, in this embodiment, when the energy absorption module 140 is in the initial state or the collapsed state, the pull rod 166 is always inserted in the mating hole 153 of the locking tongue 144.

[0130] In summary, the vehicle seat headrest 100 provided by this utility model can repeatedly absorb energy with better energy absorption effect and also has higher user comfort. Furthermore, the energy absorption module 140 is modularly assembled between the base 110 and the sliding block 120, which has the characteristics of easy assembly and stable and reliable cushioning effect.

[0131] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vehicle seat headrest, characterized by, include: Base (110); A sliding block (120) is used to connect the headrest front cover (130) and slide in cooperation with the base (110) to form a sliding of the headrest front cover (130) toward or away from the base (110) in a first direction; The energy-absorbing module (140) includes a module body (141) and an elastic buffer (142). The module body (141) is slidably engaged with the base (110), and the elastic buffer (142) is disposed between the module body (141) and the base (110). As the headrest cover (130) slides toward the base (110) in the first direction under force, the sliding block (120) can abut against the module body (141), and the elastic buffer (142) elastically deforms to absorb the kinetic energy of the headrest cover (130).

2. The vehicle seat headrest according to claim 1, characterized by One of the module body (141) and the sliding block (120) is provided with a plug-in part (1411), and the other has a plug-in groove (122). The plug-in part (1411) is plugged into the plug-in groove (122). As the headrest cover (130) slides toward the base (110) in the first direction under force, the module body (141) abuts against the sliding block (120) through the plug-in part (1411) or the plug-in groove (122).

3. The vehicle seat headrest according to claim 2, characterized by The plug-in part (1411) is movably disposed on the module body (141) and configured to move relative to the module body (141) to exit or insert into the plug-in slot (122) under force. When the plug-in part (1411) exits the plug-in slot (122), the sliding block (120) can move relative to the energy-absorbing module (140) in the first direction. The module body (141) is also provided with an elastic retainer, which continuously applies an elastic force to the plug-in part (1411) so that the plug-in part (1411) remains plugged into the plug-in slot (122) without the action of external force.

4. The vehicle seat headrest according to claim 1, characterized in that, The base (110) has a latch frame (111), the first direction is the length direction of the latch frame (111), the latch frame (111) has an opening on one side in the second direction, and the second direction is at an angle to the first direction; The module body (141) extends into the latch frame (111) through the opening and slides with the latch frame (111) to form a sliding between the two ends of the latch frame (111) in the length direction.

5. The vehicle seat headrest according to claim 4, characterized in that, The module body (141) has a limiting flange (145) and a guide wedge (146) protruding on opposite sides in the third direction, and the guide wedge (146) on the same side and the limiting flange (145) on the same side form a groove (147) extending in the first direction. The opening is provided with mating flanges (112) on both sides of the third direction. The two mating flanges (112) extend into the two slide grooves (147) respectively and slide in cooperation with the two slide grooves (147).

6. The vehicle seat headrest according to claim 1, characterized in that, The vehicle seat headrest (100) also includes an unlocking component, which includes a latch (144) that is movably disposed on the module body (141); The sliding block (120) has at least two locking slots (121), the at least two locking slots (121) are arranged sequentially in the first direction, and the locking tongue (144) is configured to be moved relative to the module body (141) by force to exit or insert into one of the at least two locking slots (121); When the latch (144) is out of the lock groove (121), the sliding block (120) can move relative to the energy absorption module (140) in the first direction; when the latch (144) is inserted into the lock groove (121), the module body (141) abuts against the sliding block (120) through the latch (144).

7. The vehicle seat headrest according to claim 6, characterized in that, The energy-absorbing module (140) also includes an elastic reset member (149), which is disposed between the latch (144) and the module body (141) and continuously applies an elastic force to the latch (144) so ​​that the latch (144) remains inserted into the lock groove (121) without external force.

8. The vehicle seat headrest according to claim 6, characterized in that, The latch (144) has a mating hole (153) through it in the first direction. The unlocking assembly also includes a pull rod (166) extending in the first direction, the pull rod (166) passing through the mating hole (153), and the pull rod (166) being configured to drive the locking tongue (144) relative to the module body (141) to move out of the locking groove (121) under force.

9. The vehicle seat headrest according to claim 6, characterized in that, The module body (141) has a guide groove (150), and the locking tongue (144) slides in cooperation with the guide groove (150) to slide along the guide groove (150) under force to exit or insert into the locking groove (121).

10. The vehicle seat headrest according to claim 9, characterized in that, One of the latch (144) and the module body (141) has a limiting groove (151), and the other has a limiting block (152). The limiting groove (151) extends in a second direction, and the limiting block (152) slides in cooperation with the limiting groove (151).

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