CN112706669B - Automobile seat headrest - Google Patents

Abstract

The invention provides an automobile seat headrest, which comprises a base module and a neck support, wherein the base module comprises a base plate and a neck support; the neck brace sets up basic module below for support passenger's neck. The invention well meets the current market condition and the real requirements of users, provides comfortable neck support for passengers and greatly enriches the use function of the headrest of the automobile seat.

Description

Automobile seat headrest

Technical Field

The invention relates to the technical field of automobile seats, in particular to an automobile seat headrest.

Background

With the continuous improvement of living standard, people have higher and higher requirements on the use of automobiles, and the functional requirements are more developed towards diversification. As an important part in an automobile, the automobile seat is continuously innovated and advanced in terms of occupant protection and comfort, so as to meet the demand of diversified functions of people.

People are tired and have soreness and pain in the neck, shoulders and waist during long-time driving or taking a car.

Disclosure of Invention

The present invention is directed to a headrest for a vehicle seat to solve at least one of the above problems in the prior art.

In order to solve the above technical problem, the present invention provides a headrest for a seat of an automobile, including: a base module and a neck brace; the neck brace is arranged below the base module and is used for supporting the neck of a passenger (when the passenger has a rest).

Further, be provided with heating module on the neck brace, heating module passes through the pencil and is connected with seat owner pencil for heating module provides the power.

Wherein the wiring harness is arranged inside the neck support and the headrest, and the appearance is invisible.

The heating module is in many forms, such as heating wires, heating plates, etc. arranged in the neck brace.

Preferably, the heating module is a heating pad laid on the side of the neck brace passenger.

Further, still include fixed bolster, the fixed bolster passes through modes such as joint or threaded connection and connects the bottom of basic module, the neck brace sets up on the fixed bolster.

Further, the neck support is arranged on the fixing support through a sliding seat; in the direction of being close to or keeping away from the neck, the slide seat is arranged in a telescopic mode and is used for adjusting the extending distance of the neck support to the neck of a passenger.

Further, still include the slide rail, the slide passes through the slide rail setting and is in on the fixed bolster. The slide rail generally includes a fixed rail and a movable rail.

Further, the neck support can be arranged on the sliding seat in a vertically-turnable manner through a hinge or a pivot shaft.

When the neck support is not used, the neck support is folded upwards and then is retracted backwards to be hidden below the headrest (or the base module) in the front-back direction; when the neck support is used, the neck support is turned down, and in the front-back direction, the neck support forwards protrudes out of the headrest (or the base module) and is used for supporting the neck. Or the inclination angle of the neck brace is adjusted through overturning, so that the neck brace is suitable for the use requirements of different passengers.

Further, the neck brace also comprises a locking element for locking the up-down turning angle of the neck brace.

Further, a locking structure for locking the sliding seat is arranged between the sliding seat and the fixed support.

Further, the locking structure includes: the sliding seat is hinged with an unlocking button and a clamping point or a clamping groove arranged on the fixed support; the unlocking button comprises a clamping head (or a clamping hook) and a pressing part which are arranged at two ends; the plurality of clamping points or clamping grooves are arranged on the path of the clamping head at intervals along the front-back direction; a torsion spring is arranged between the unlocking button and the sliding seat, the clamping head tends to be close to the clamping point or the clamping groove under the action of the torsion spring, and the clamping head is matched with the clamping point or the clamping groove to lock the sliding seat; the pressing part is pressed down to force the clamping head to be separated from the clamping point or the clamping groove, so that the sliding seat can be unlocked.

The locking structure is in many forms, for example, the locking structure is a temporary locking structure, a sliding seat is provided with a lock pin, a plurality of clamping grooves are formed in a fixed bracket at intervals, and the lock pin tends to extend out and into the clamping grooves under the action of a spring so as to lock the sliding seat. The sliding seat is pushed by external force, and the locking pin overcomes the spring force and withdraws from the clamping groove, so that the locking state of the sliding seat is released.

Further, a return spring is included, which is disposed between the fixed bracket and the slide carriage and tends to urge the slide carriage to move rearward.

Reset spring combines interim locking function for the neck brace has the function of ulcerate and contracts, and the neck brace can in time retract when bumping, avoids human neck to receive the injury.

Further, the neck brace includes plaque, backup pad, foaming in proper order, heating pad and face cover in the thickness direction. The supporting plate is fixed on the sliding seat or the fixed bracket through screws, and the front side of the supporting plate is covered with a foaming dough cover; the heating pad is arranged between the foaming dough cover and the dough cover; the plaque sets up on the backup pad trailing flank through joint or threaded connection.

Furthermore, a limiting structure used for limiting the travel of the sliding seat is arranged between the sliding seat and the fixed support. Preferably, the limiting structure is a stopping point structure arranged at the front end and the rear end of the sliding rail. Each group of stop point structures comprises a fixed rail stop point and a movable rail stop point which are relatively adaptive.

By adopting the technical scheme, the invention has the following beneficial effects:

the automobile seat headrest well meets the current market condition and the real requirements of users, provides comfortable neck support for passengers, and greatly enriches the using function of the automobile seat headrest.

The neck support can also be provided with a heating function, so that the comfort is improved; the neck brace can be adjusted from front to back and turned over up and down, thus meeting the use requirements of different passengers.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a perspective view of an automotive seat headrest provided in embodiment 1 of the present invention;

FIG. 2 is a perspective view of the neck brace shown in FIG. 1;

FIG. 3 is an assembly view of the neck brace shown in FIG. 1 mounted to a base module by a mounting bracket;

FIG. 4 is a schematic view of the neck brace of embodiment 1 of the present invention that can be adjusted back and forth;

FIG. 5 is a schematic view showing the adjustment of the neck brace in the embodiment 1 of the present invention by turning it upside down;

FIG. 6 is an exploded view of the fixing bracket, the slide rail and the neck brace in embodiment 1 of the present invention;

FIG. 7 is a bottom perspective view of the mounting bracket shown in FIG. 1;

FIG. 8 is a perspective view of the carriage shown in FIG. 1;

fig. 9 is a perspective view of a headrest for a seat of an automobile provided in embodiment 2 of the present invention;

FIG. 10 is a top view of the automotive seat audio headrest shown in FIG. 9;

fig. 11 is a schematic view of the layout structure of speakers in embodiment 2 of the present invention;

FIG. 12 is a schematic view showing a state before turning over the wing part in example 2;

fig. 13 is a schematic view showing a state in which the wing part is turned over according to embodiment 2;

FIG. 14 is a rear view of an intermediate fixing plate according to embodiment 2;

FIG. 15 is a schematic structural view of a base module in embodiment 2;

FIG. 16 is an exploded view of a wing part in embodiment 2;

fig. 17 is a schematic structural diagram of an execution module in embodiment 3 of the present invention;

fig. 18 is a schematic diagram of an execution module according to embodiment 3 of the present invention.

Reference numerals:

1-a head; 10-a base module; 11-an external interface; 20-wing part; 21-left wing; 22-right wing; 23-a plaque; 24-soundproof cotton; 25-a scaffold; 26-foaming; 27-face sleeve; 30-a loudspeaker; 40-sound harness; 50-middle fixing plate; 51-buckling; 100-an execution module;

110-a cylindrical body; 111-a limiting groove; 112-ratchet tooth configuration; 112 a-holding step portion; 112 b-a transition; 120-a first push rod; 121-top push plate; 122-ring tooth configuration; 123-limit strip blocks; 130-a second push rod; 131-guide ribs; 132-a sharp corner; 140-a rack and pinion gear pair; 141-a drive rack; 142-a gear structure; 151-first return spring; 152-a second return spring;

200-neck support; 201-card; 202-neck support plaque; 203-a support plate; 204-foaming; 205-surface sleeve; 210-a heating pad; 211-heating the wire harness; 220-fixing the bracket; 221-bracket trim panel; 222-stuck point; 230-a slide; 231-a card slot; 232-orbit determination; 232 a-fixed rail stop point; 233-moving rail; 233 a-moving rail stop point; 234-hinge; 235-an unlock button; 235 a-a pressing part; 235 b-a chuck; 240-coil spring.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be further explained with reference to specific embodiments.

Example 1

As shown in fig. 1, the present embodiment provides a headrest for a seat of an automobile, including: a base module 10 and a neck brace 200 (also known as a neck brace sub-assembly); the neck brace 200 is disposed under the base module 10 for supporting the neck of the passenger at rest.

The neck brace 200 is provided with a heating module, and the heating module is connected with the seat main wire harness through a heating wire harness 211 and used for providing a power supply for the heating module. Wherein the wiring harness is arranged inside the neck brace 200 and the headrest, and the appearance is invisible. The heating module is in many forms, such as heating wires, heating plates, etc. provided in the neck brace 200. In this embodiment, the heating module is a heating mat 210 laid on the passenger side of the neck brace 200.

As shown in fig. 2, the present embodiment further includes a fixing bracket 220 and a slider 230.

As shown in fig. 3, the fixing bracket 220 is fastened to the bottom of the base module 10 by screws after being clamped, and the neck brace 200 is disposed on the fixing bracket 220. The neck brace 200 is arranged on the fixed bracket 220 through a sliding seat 230; as shown in fig. 4, the slide 230 is telescopically arranged in a direction approaching or departing from the neck of the passenger to adjust the distance that the neck brace 200 extends toward the neck of the passenger. Specifically, the slider 230 is disposed on the fixing bracket 220 by a slide rail. The slide rail includes a fixed rail 232 and a movable rail 233.

And as shown in fig. 2, 5 and 6, the neck brace 200 is arranged on the slide 230 via a hinge 234 so as to be able to be turned upside down. When not in use, the neck brace 200 is folded upwards, and the neck brace 200 is retracted backwards to be hidden under the headrest (or the base module 10) in the front-back direction; in use, the neck brace 200 is turned down, and in the front-rear direction, the neck brace 200 protrudes forward from the headrest (or base module 10) for supporting the neck. Or the inclination angle of the neck brace 200 can be adjusted by turning over, thereby being suitable for the use requirements of different passengers.

This embodiment also includes a locking element for locking the flip angle of the brace 200. The angle locking element is in many forms, and is a card structure in the prior art, the card 201 is arranged on the neck support 200, and the front end of the card 201 is clamped into the clamping groove 231 on the sliding seat 230 under the action of the self elasticity. A plurality of draw-in grooves 231 interval sets up, and in the neck brace 200 upset process, the card 201 front end card then realizes the rotation angle locking of neck brace 200 in going into different draw-in grooves 231. When the rear end of the card 201 is pressed down hard to force the front end to lift up and exit the slot 231, or the front end is directly lifted up by a wrench part arranged at the back of the front end of the card 201, the angle locking of the neck support 200 is released.

As shown in fig. 6 and 7, a locking structure for locking the sliding base 230 is disposed between the sliding base 230 and the fixing bracket 220. In this embodiment, the locking structure includes: an unlocking button 235 hinged on the sliding base 230 and a clamping point 222 arranged on the fixed bracket 220.

As shown in fig. 8, the unlocking button 235 includes a chuck 235b and a pressing portion 235a provided at both ends; a plurality of the locking points 222 are arranged on the path of the chuck 235b at intervals in the front-rear direction; a torsion spring is arranged between the unlocking button 235 and the sliding seat 230, under the action of the torsion spring, a clamping head 235b tends to be close to the clamping point 222, and the clamping head 235b is matched with the clamping point 222 to lock the sliding seat 230; by pressing the pressing portion 235a, the chuck 235b is forced to be disengaged from the chuck 222, and the slide base 230 can be unlocked.

Of course. The locking structure is a temporary locking structure, for example, a locking pin is disposed on the sliding base 230, a plurality of slots are spaced on the fixed bracket 220, and the locking pin tends to extend out and into the slots under the action of a spring, so as to lock the sliding base 230. The slider 230 is pushed by an external force, and the locking pin is withdrawn from the locking groove against the spring force to release the locking state of the slider 230.

Preferably, the present application further comprises a return spring, which is disposed between said fixed bracket 220 and said slide carriage 230, tending to force the slide carriage 230 to move backwards. The reset spring combines the temporary locking function, so that the neck support 200 has the crumple function, the neck support 200 can retract in time when collision occurs, and the neck of a human body is prevented from being injured.

As shown in fig. 6 and 7, the return spring in this embodiment is a coil spring 240, a winding end of the coil spring 240 is rotatably disposed on the fixed bracket 220, and a connecting piece end of the coil spring 240 is connected to the slider 230. As shown in fig. 7 and 8, a limiting structure for limiting the travel of the sliding seat 230 is disposed between the sliding seat 230 and the fixing bracket 220. Particularly, limit structure is the fender point structure of setting both ends around the slide rail. Each set of stop structure comprises a fixed stop 232a and a movable stop 233a which are relatively adapted.

As shown in fig. 6, the neck brace 200 (also called neck brace small assembly) includes a neck brace plaque 202, a support plate 203, a foam 204, a heating pad 210 and a face cover 205 in the thickness direction. The supporting plate 203 is fixed on the sliding base 230 through screws, and the front side of the supporting plate 203 is covered with the foaming 204 and the surface sleeve 205; a heating pad 210 is disposed between the foam 204 and the face cover 205; the neck brace plate 202 is disposed on the rear side of the support plate 203 by a snap or threaded connection. The rear side of the fixing bracket 220 is also provided with a bracket decorative plate 221 for shielding the sliding base 230 and other structures.

The automobile seat headrest well meets the current market condition and the real requirements of users, provides comfortable neck support for passengers, and greatly enriches the using function of the automobile seat headrest. The neck support 200 can also be provided with a heating function, so that the comfort is improved; the neck brace 200 can be adjusted forwards and backwards and turned over up and down, so that the use requirements of different passengers are met.

Example 2

As shown in fig. 9 (the head and neck assembly is not shown in the figure), the headrest for a vehicle seat provided in the present embodiment further includes a wing portion 20 disposed on the base module 10, and a speaker 30 is disposed on the wing portion 20.

The wing part 20 is a left wing part 21 and a right wing part 22; the left wing part 21 and the right wing part 22 are respectively provided with a loudspeaker 30. The left wing part 21 and the right wing part 22 are respectively arranged on the left side and the right side of the head of a driver or a passenger on a projection plane vertical to the front-back direction of the vehicle body. In the present application, the front side of the headrest is the side on which a passenger or a driver sits, and the left and right hands of the passenger or the driver correspond to the left and right sides of the headrest, respectively.

In the present application, the base module 10 (or called a headrest body) is a base component of the headrest, and includes a headrest up-down adjustment structure therein; the lower part is provided with a headrest rod for supporting the whole headrest assembly. Speakers 30 are provided on the left and right sides of the headrest, closer to the ears of the left and right sides of the passenger, and provide navigation voice or entertainment music for the passenger, thereby achieving better hearing effect.

The loudspeaker 30 is connected with an audio playing device through a sound wire harness 40; the two ends of the sound harness 40 are respectively connected with the seat main harness and the loudspeaker 30 and used for transmitting power and audio signals to the loudspeaker 30, and the sound harness 40 is integrally arranged inside the headrest and is invisible in appearance.

By adjusting the height of the headrest such that the head of the driver or passenger rests on the base module 10 of the headrest, the speaker 30 is disposed facing the ear of the driver or passenger in the height direction.

Wherein preferably, as shown in fig. 9-11, the wing part 20 is swingably provided on the base module 10 by a hinge or a pivot shaft. As shown in fig. 12 and 13, when the left and right wings 21 and 22 approach the head 1 of the driver or passenger by swinging, the speaker 30 can gradually approach the ear of the driver or passenger, thereby providing clearer sound effect to the driver or passenger; therefore, the loudspeaker 30 can be closer to the ears of passengers or drivers by adjusting the turning angle of the wing parts 20, and good comfort and privacy are ensured.

As shown in fig. 14, the present embodiment further includes a middle fixing plate 50, and the left wing part 21 and the right wing part 22 are respectively disposed at the left and right sides of the middle fixing plate 50; the intermediate fixing plate 50 is detachably coupled to the base module 10. In this embodiment, the middle fixing plate 50 is connected to the base module 10 by a buckle 51 (or hook) at the back thereof. As shown in fig. 7, the base module 10 is provided with an external interface 11 adapted to the buckle 51.

Standardization and modularization of the wing part 20 and the base module 10 can be realized through the middle fixing plate 50, and after a clamping or threaded connection structure is standardized, quick exchange and installation of headrests of different vehicle types and different design styles and wing parts 20 of different specifications or styles can be realized, assembly efficiency is improved, and production cost is reduced.

Wherein, the left wing part 21 and the right wing part 22 can be pivoted on the middle fixing plate 50 away from or close to the head 1 of the driver or the passenger respectively. Namely, the left wing part 21 and the right wing part 22 are swingably provided on the middle fixing plate 50 and then provided on the base module 10 through the middle fixing plate 50. The left and right wings 21, 22 may gradually approach or move away from the head 1 of the driver or passenger during the swing.

As shown in fig. 16, wing portion 20 includes, in order from the rear to the front in the thickness direction: a decorative plate 23, soundproof cotton 24, a bracket 25 and a foam 26; the bracket 25 is provided with a lug (namely, a mounting connecting plate); the bracket 25 is pivotably connected to the intermediate fixing plate 50 by a hinge or a pivot shaft.

The decorative plate 23 is connected to the ear plate of the bracket 25 in a clamping or threaded manner, a closed space is formed between the ear plate of the bracket 25 and the decorative plate 23, and the soundproof cotton 24 is filled in the closed space and is further used for isolating the sound of the loudspeaker 30 from propagating backwards, so that the experience effect of sound is improved; the loudspeaker 30 is arranged on the ear plate of the bracket 25 through a fixing frame; the foam 26 covers the front side of the bracket 25, and the foam 26 leaves a through hole for accommodating the speaker 30 at a position corresponding to the speaker 30. The front side (the side closer to the passenger) of the intermediate fixing plate 50 is also coated with a foaming material. The middle fixing plate 50 and the outer portion of the wing part 20 are wrapped by the surface cover 27, and the surface cover 27 is designed to be perforated at the position corresponding to the loudspeaker 30, so that the sound penetrability requirement of the loudspeaker 30 is met.

Wherein, the plaque 23 is fixed on the lug of the bracket 25, and can play the roles of decoration, sound insulation and dust prevention. The soundproof cotton 24 is preferably adhered to a side of the bracket 25 of the sheathing panel 23 so as to facilitate assembly.

According to the automobile seat audio headrest provided by the invention, on the premise of ensuring the safety performance, the loudspeaker 30 is integrated into the seat headrest, the comfort and the privacy are both considered, the functions of the automobile seat headrest are enriched, and a safer and more comfortable driving experience and a more comfortable riding environment can be provided for a driver or a passenger. And by adjusting the wing parts 20 at both sides of the headrest, the loudspeaker 30 can be closer to the ears of the passengers, so that the passengers can enjoy the hearing feast of themselves in the riding process.

Compared with the traditional vehicle-mounted loudspeaker, the loudspeaker on the headrest is closer to the ears of a human body, the effect is closer to that of the earphone, meanwhile, the use of the headrest loudspeaker is safer than the direct use of the earphone in the aspect of use scenes, and a good balance point is found between driving safety and good entertainment experience;

the invention is beneficial to improving privacy, the sound transmission of the traditional vehicle-mounted loudspeaker is open, and the vehicle-mounted loudspeaker has great limitation at present when more and more consumers pay attention to riding experience; the invention can form the effects of non-interference and independent sound at each position when applied to the whole vehicle. Such as: when a main driver receives navigation sound information and passengers at other positions listen to music, all the subareas are not interfered with each other, so that the method has good privacy and avoids the uncomfortable condition of ears due to long-time use of earphones;

thirdly, the invention is designed with a small wing structure, and the two wings can adjust the overturning angles of the small wings according to the requirements of users, thereby improving the comfort.

Example 3

This embodiment is substantially the same as embodiment 2 except that:

as shown in fig. 17, the present embodiment discloses an audio headrest for a seat of an automobile with an actuating module 100 for maintaining and changing a swing angle of a wing portion.

The execution module 100 in the present embodiment is provided on the base module 10; alternatively, the base module 10 has an installation space left thereon, and the actuator module 100 is disposed on the intermediate fixing plate 50.

The execution module 100 includes: a cylindrical body 110, a first push rod 120, a second push rod 130 and a gear-rack transmission pair 140. The tubular body 110 is substantially disposed along the front-rear direction of the vehicle body, the top ends of the first push rod 120 and the second push rod 130 are inserted into the tubular body 110 from the front end and the rear end, respectively, and the first push rod 120 and the second push rod 130 can slide along the middle through hole of the tubular body 110.

The rack and pinion gear pair 140 includes a gear rack 141 and a gear structure 142 that mesh with each other; the driving rack 141 is fixedly connected to the end of the second push rod 130 through an intermediate connection member, and moves synchronously with the second push rod 130. The gear structure 142 is coaxially disposed with the pivot shaft of the wing portion 20, and is relatively and fixedly connected to the wing portion 20. When the second push rod 130 moves in the front-rear direction, the wing part 20 is driven to swing through the driving rack 141 and the gear structure 142.

The actuating module 100 further comprises a first return spring 151 and a second return spring 152, the first return spring 151 being arranged between the first push rod 120 and the tubular body 110, the first return spring 151 tending to force the first push rod 120 to move forward when it is operated;

the second return spring 152 has one end connected to the cylindrical body 110, the base module 10 or the intermediate fixing plate 50 and the other end connected to the second push rod 130, and tends to force the second push rod 130 to move forward during operation. When the second push rod 130 moves forward, it drives the wing part 20 to swing backward, away from the head of the passenger or driver, and returns to the original state.

By pressing the end of the first push rod 120, the first push rod 120 pushes the second push rod 130 to move backward against the spring force of the first return spring 151 and the second return spring 152, and the wing part 20 is driven by the rack-and-pinion pair 140 to swing forward, close to the head of the passenger or driver, and finally close to the ear.

The end of the first push rod 120 is provided with a push plate 121, and the push plate 121 is externally wrapped with foam, a surface cover and the like, so that a passenger or a driver can conveniently push against the push plate 121 by using the head, and further swing of the wing part 20 is realized.

As shown in fig. 18, in order to maintain the wing part 20 in the initial state before swinging or in the working state after swinging, a limiting groove 111 is provided on the inner side wall of the middle through hole of the cylindrical body 110, a ratchet tooth structure 112 is provided on one end of the inner side wall of the middle through hole at the rear side of the limiting groove 111, and the ratchet tooth structure 112 includes: a holding step portion 112a and a transition portion 112 b.

The top end outer circle of the second push rod 130 is provided with a guide rib 131 which is matched with the limiting groove 111 in a guiding way, and the guide rib 131 is matched with the limiting groove 111 to limit the second push rod 130 to rotate along the circumferential direction of the cylindrical body 110. The guide rib 131 is provided with a sharp corner 132 near the front end of the first push rod 120 to engage with the ratchet tooth structure 112.

The side surface of the outer circle of the front end of the first push rod 120 is provided with a limiting strip 123 which is matched with the limiting groove 111 in a guiding manner, so that the first push rod 120 is prevented from rotating. The end surface of the front end of the first push rod 120 is provided with an annular tooth structure 122 which is engaged with the sharp corner 132. The first push rod 120 is pushed backwards, the first push rod 120 moves backwards, the annular tooth structure 122 at the front end of the first push rod 120 pushes the sharp corner 132 to force the second push rod 130 to slide backwards, when the guide rib 131 completely slides out of the limiting groove 111, the sharp corner 132 slides along the tooth surface of the annular tooth structure 122 under the action of the second return spring 152, and the tooth surface of the annular tooth structure 122 guides the sharp corner 132 to rotate and slide into the retaining step part 112a of the ratchet tooth structure 112; when the pressing of the first push rod 120 is stopped, the first push rod 120 moves forward and returns by the first return spring 151, and the limiting groove on the holding step part 112a prevents the sharp corner part 132 from sliding further, thereby forcing the wing part 20 to maintain the swing-back working state.

When the first push rod 120 is pressed forcibly again, the tooth surface of the annular tooth structure 122 of the first push rod 120 guides the sharp corner portion 132 to slip again, the sharp corner portion 132 slides out of the holding step portion 112a of the ratchet tooth structure 112 and slides into the stopper groove 111 along the transition portion 112b of the ratchet tooth structure 112; when the pressing of the first push rod 120 is stopped, the first push rod 120 moves forward and returns under the action of the first return spring 151, the second push rod 120 moves forward and returns under the action of the second return spring 152, and the wing part 20 is driven by the rack-and-pinion pair 140 to swing backward and return to the initial state.

A limiting structure such as a limiting step or a limiting groove is arranged between the first push rod 120 and the cylindrical body 110 to prevent the first push rod 120 from being ejected forwards under the action of a spring force.

The execution module 100 in this embodiment does not need to provide an additional power source, does not need a passenger to manually swing the wing part, and can change the swing angle of the wing part 20 only by pushing the top push plate 121 backwards with the head, which is simple and convenient, and particularly avoids traffic accidents caused by manual operation of the wing part by a driver during driving; thereby being safer and more reliable.

The push plate 121 is under the parcel of foaming dough cover, and the outside is invisible, and after pressing, the push plate 121 can automatic recovery original state under the effect of spring force, can not influence the whole outward appearance of headrest from this.

In case of a sudden safety accident, the passenger or the driver can press the push plate 121 through the head to force the wing parts 20 to swing and protect the two sides of the head, so as to prevent the head from being hurt by foreign objects.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A headrest for a seat of a vehicle, comprising: a base module and a neck brace; the neck support is arranged below the base module and used for supporting the neck of a passenger;

the loudspeaker comprises a base module and is characterized by also comprising a wing part arranged on the base module, wherein the wing part is provided with a loudspeaker and can be arranged on the base module in a swinging way through a hinge or a pivot shaft; the wing swing angle adjusting device also comprises an execution module used for keeping and changing the swing angle of the wing part;

the execution module comprises: the cylinder body, the first push rod, the second push rod and the gear rack transmission pair; the cylindrical body is arranged along the front and rear direction of the vehicle body, the top ends of the first push rod and the second push rod are respectively inserted into the cylindrical body from the front end and the rear end, and the first push rod and the second push rod can slide along the middle through hole of the cylindrical body;

the gear rack transmission pair comprises a transmission rack and a gear structure which are meshed with each other; the transmission rack is fixedly connected with the tail end of the second push rod through an intermediate connecting piece and moves synchronously with the second push rod; the gear structure is coaxially arranged with the pivot shaft of the wing part and is relatively and fixedly connected with the wing part; when the second push rod moves along the front-back direction, the wing parts are driven to swing through the transmission rack and the gear structure;

the execution module also comprises a first return spring and a second return spring, the first return spring is arranged between the first push rod and the cylindrical body, and the first return spring tends to force the first push rod to move forwards when working;

one end of the second return spring is connected with the cylindrical body, the base module or the middle fixing plate, and the other end of the second return spring is connected with the second push rod, so that the second push rod tends to be forced to move forwards during operation; when the second push rod moves forwards, the wing parts are driven to swing backwards, the second push rod is far away from the heads of passengers or drivers, and the second push rod is restored to the initial state;

through pressing the end of the first push rod, the first push rod pushes the second push rod to overcome the spring force of the first return spring and the second return spring to move backwards, and the gear and rack transmission pair drives the wing part to swing forwards, so that the wing part is close to the head of a passenger or a driver and is finally close to the ear.

2. The headrest for vehicle seats according to claim 1, wherein said neck support is provided with a heating module, said heating module being connected to a main harness of said seat by a harness for providing power to said heating module.

3. The headrest for vehicle seats of claim 2, wherein said heating module is a heating pad applied to the passenger side of said neck brace.

4. The headrest for car seats according to claim 1, further comprising a fixing bracket connected to a bottom of said base module, said neck brace being provided on said fixing bracket;

the neck support is arranged on the fixing support through the sliding seat; in the direction of being close to or keeping away from the neck, the slide seat is arranged in a telescopic mode and is used for adjusting the extending distance of the neck support to the neck of a passenger.

5. The headrest for car seats of claim 4, further comprising a slide rail, wherein said slide carriage is disposed on said stationary bracket by said slide rail.

6. The headrest for vehicle seats according to claim 4, characterized in that the neck brace is arranged on the slide carriage so as to be able to be turned up and down by means of a hinge or pivot.

7. The headrest for vehicle seats according to claim 6, further comprising a locking element for locking the neck brace in an up-down flip angle;

and/or a locking structure for locking the sliding seat is arranged between the sliding seat and the fixed bracket.

8. The headrest for vehicle seats of claim 7, wherein said locking structure comprises: the sliding seat is hinged with an unlocking button and a clamping point or a clamping groove arranged on the fixed support; the unlocking button comprises a clamping head and a pressing part which are arranged at two ends; the plurality of clamping points or clamping grooves are arranged on the path of the clamping head at intervals along the front-back direction; and a torsion spring is arranged between the unlocking button and the sliding seat, and under the action of the torsion spring, the clamping head tends to be close to the clamping point or the clamping groove and is matched with the clamping point or the clamping groove to lock the sliding seat.

9. The headrest for car seats of claim 4, further comprising a return spring disposed between said fixed bracket and said slide seat tending to urge the slide seat rearwardly.

10. The headrest for car seats according to claim 3, wherein said neck brace includes a trim plate, a support plate, a foam, said heating pad and a cover in order in a thickness direction.

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