CN214450497U - Electric headrest with adjustable folding ear - Google Patents

Abstract

The utility model discloses an electric headrest with adjustable folding lugs, which comprises an inserted link fixedly connected with a seat; the supporting body is connected with the inserted rod and can be relatively fixed; the middle plate is positioned at the front end of the supporting body and is supported and fixed by the supporting body; a lug folding motor is fixed on the middle plate; roll over the ear, it is provided with two to roll over the ear, is located the left and right sides of intermediate lamella front end respectively, two roll over the one end of ear with the intermediate lamella is articulated, roll over the other end of ear by it is rotatory to roll over ear motor drive, so that two the contained angle of rolling over ear and intermediate lamella changes. The utility model discloses stable in structure is reliable, and rolls over the ear and adjust rotation angle through rolling over ear motor, and easy operation is laborsaving, can realize rolling over the high accuracy of ear angle and adjust.

Description

Electric headrest with adjustable folding ear

Technical Field

The utility model relates to an electronic headrest designs technical field, especially relates to an electronic headrest with adjustable ear of rolling over.

Background

The headrest of the automobile seat in the prior art can only be adjusted up and down or inclined back and forth, few headrest structures capable of being folded at will on two sides exist, and the headrest with the folding lugs on two sides can enable a user to have a more safe feeling and a more comfortable feeling when the user lies on the seat.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that the automobile seat headrest in the prior art does not have the both sides that can adjust at will and roll over the ear, can't adapt to more demands of customer, the utility model provides an electronic headrest with adjustable ear of rolling over solves above-mentioned problem.

The utility model provides a technical scheme that its technical problem adopted is: an electric headrest with adjustable folding ears comprises an insert rod which is fixedly connected with a seat; the supporting body is connected with the inserted rod and can be relatively fixed; the middle plate is positioned at the front end of the supporting body and is supported and fixed by the supporting body; a lug folding motor is fixed on the middle plate; roll over the ear, it is provided with two to roll over the ear, is located the left and right sides of intermediate lamella front end respectively, two roll over the one end of ear with the intermediate lamella is articulated, roll over the other end of ear by it is rotatory to roll over ear motor drive, so that two the contained angle of rolling over ear and intermediate lamella changes.

Furthermore, an output shaft of the lug folding motor is in transmission fit with a motor flexible rod, two long grooves are formed in the motor flexible rod, and the two folding lugs are connected with the motor flexible rod through the two long grooves respectively; when the ear folding motor is started, the ear can slide in the long groove.

Furthermore, the inserted bar is of a tubular structure, a threading hole is formed in the inserted bar, and a lead of the ear folding motor passes through the inside of the inserted bar and is connected with an external power supply.

Furthermore, plug boards suitable for penetrating through the middle board are arranged on the two folding lugs, and a damping structure is arranged between the plug boards and the middle board.

Further, the support main part includes motor cabinet, front and back fly leaf and front and back adjustment motor, front and back adjustment motor is fixed in on the motor cabinet, front and back adjustment motor with front and back fly leaf transmission fit, front and back fly leaf is located between intermediate lamella and the motor cabinet, front and back fly leaf with the intermediate lamella articulates in the third pivot.

Furthermore, a plurality of rib plates penetrating through the motor base are arranged on the front and rear movable plates.

Further, the inserted bar is the U-shaped structure, the inserted bar with the top of motor cabinet is rotated and is connected in first pivot, is fixed with inclination adjustment motor on the inserted bar, inclination adjustment motor's output shaft and the bottom transmission cooperation of motor cabinet, when inclination adjustment motor starts, the relative inclination adjustment motor's of motor cabinet output shaft along the fore-and-aft direction motion, the motor cabinet winds first pivot is rotatory.

Furthermore, the included angle between the two folding lugs and the middle plate is 0-29.5 degrees.

Furthermore, the front end of the motor base is also rotatably connected with a swinging plate, the motor base and the swinging plate are rotatably connected to a second rotating shaft, the second rotating shaft is arranged in parallel with the first rotating shaft, and when the front and rear movable plates are positioned at the rearmost part, the middle plate is attached to the front end of the swinging plate; when the front and rear movable plates move forward, the intermediate plate is separated from the swing plate.

Furthermore, an external thread is arranged on an output shaft of the inclination angle adjusting motor, a loose joint nut is hinged to the bottom of the motor base, and the loose joint nut is in threaded connection with the output shaft of the inclination angle adjusting motor.

The utility model has the advantages that:

(1) electric headrest with adjustable ear that rolls over, roll over the both ends of ear respectively with the articulated shaft of intermediate lamella and with the output shaft who rolls over the ear motor to make the whole terminal surface of rolling over the ear obtain supporting, after angle modulation accomplishes, the phenomenon can not appear rocking, stable in structure is reliable, and rolls over the ear and adjust rotation angle through rolling over the ear motor, easy operation is laborsaving, can realize rolling over the high accuracy of ear angle and adjust.

(2) Electronic headrest with adjustable ear of rolling over, make seesaw through front and back fly leaf control front bezel, satisfy more demands of customer.

(3) Electric headrest with adjustable ear, roll over the ear through the plugboard with two and be connected with same motor, make two ear can synchronous motion, guarantee the symmetry of headrest.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is an exploded view of an embodiment of a substantially reclining power headrest according to the present invention;

FIG. 2 is a schematic structural view (as viewed from the front end) of the pitch angle adjustment assembly of the present invention;

FIG. 3 is an enlarged view taken at a in FIG. 2;

FIG. 4 is a schematic structural view (as viewed from the rear end) of the recliner assembly of the present invention;

FIG. 5 is an enlarged view of FIG. 4 at b;

FIG. 6 is an enlarged view at c of FIG. 4;

FIG. 7 is a rear view of the pitch angle adjustment assembly of the present invention;

FIG. 8 is a sectional view taken along line A-A of FIG. 7;

FIG. 9 is a sectional view taken along line B-B of FIG. 7;

FIG. 10 is a schematic view of the assembly of the front plate and the front and rear movable plates of the present invention;

FIG. 11 is an enlarged view taken at d in FIG. 10;

fig. 12 is an exploded view of the front panel of the present invention;

fig. 13 is a front view of the middle ear assembly of the present invention;

FIG. 14 is a cross-sectional view taken along line D-D of FIG. 13;

FIG. 15 is a sectional view taken along line E-E of FIG. 13;

FIG. 16 is a side view of FIG. 13;

fig. 17 is a sectional view taken along line E-E of fig. 16.

In the figure, 1, an insert rod 101, a threading hole 2, a motor base 201, an elongated slot 3, a front plate 301, a middle plate 302, a lug, 4, a rear plate 5, foam 6, an inclination angle adjusting motor 7, a first rotating shaft 8, a loose joint nut 9, a mounting plate 10, a lead 11, a damping structure 1101, a damping block 1102, a damping spring 12, a swinging plate 13, a second rotating shaft 14, a front and rear adjusting motor 15, a front and rear movable plate 1501, a rib plate 16, a third rotating shaft 17, a hinge shaft 18, a lug folding motor 19, an inclination angle adjusting component 20, a front and rear adjusting component 21, a lug folding component 22, a motor movable rod 2201, an elongated slot 23 and an insert plate.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

The term "front" indicating the orientation and positional relationship in the present invention refers to a direction toward a customer on the electric headrest, and "rear" refers to a direction away from the customer on the electric headrest.

Example one

As shown in fig. 1, 12-17, an electric headrest with adjustable folding ears 302 comprises an insert rod 1, a support main body, a middle plate 301 and folding ears 302, wherein the insert rod 1 is fixedly connected with a seat; the supporting main body is connected with the inserted bar 1 and can be relatively fixed; the middle plate 301 is positioned at the front end of the supporting body and is supported and fixed by the supporting body; a lug folding motor 18 is fixed on the middle plate 301; the two folding lugs 302 are respectively positioned at the left side and the right side of the front end of the middle plate 301, one ends of the two folding lugs 302 are hinged with the middle plate 301, and the other ends of the folding lugs 302 are driven by the folding lug motor 18 to rotate, so that the included angles between the two folding lugs 302 and the middle plate 301 are changed.

The middle plate 301 and the two folding ears 302 constitute a front plate 3, the insert rod 1 is used for connecting with a seat and extends upwards so as to mutually associate the seat with a support main body, the support main body is used as a main support structure for supporting the middle plate 301 and the folding ears 302, and the peripheries of the middle plate 301 and the folding ears 302 are usually wrapped with foam 5 for improving the comfort of a customer. As shown in fig. 1, the middle plate 301 is a panel with a large width, two folding lugs 302 are located in front of the middle plate 301 and distributed on the left and right sides of the middle plate 301, two hinge shafts 17 are fixed on the middle plate 301, the two hinge shafts 17 are distributed and hinged with the two folding lugs 302, when the folding lugs 302 are parallel to the middle plate 301, the middle plate 301 can support the folding lugs 302, and when the folding lug motor 18 is started, the two folding lugs 302 rotate around the respective hinge shafts 17.

The connection between the ear motor 18 and the ear 302 can be, but is not limited to, the following structure: an output shaft of the lug folding motor 18 is in transmission fit with the motor flexible rod 22, two long grooves 2201 are formed in the motor flexible rod 22, and the two folding lugs 302 are connected with the motor flexible rod 22 through the two long grooves 2201 respectively; when the ear folding motor 18 is started, the folding ear 302 can slide laterally in the long slot 2201. As shown in fig. 17, the long slot 2201 extends in the left-right direction, the folding lug 302 is connected with the long slot 2201 through a limit screw, the limit screw and the folding lug 302 limit the motor flexible rod 22 in the axial direction of the limit screw, the output shaft of the folding lug motor 18 is coaxially arranged with the limit screw, when the folding lug motor 18 is started, the motor flexible rod 22 moves in the axial direction of the output shaft of the folding lug motor 18, the motor flexible rod 22 drives the folding lug 302 to move back and forth, and the folding lug 302 can slide in the long slot 2201 in the lateral direction, so that the folding lug 302 rotates around the hinge shaft 17.

The transmission matching between the ear bending motor 18 and the motor flexible rod 22 means that the rotation motion of the output shaft of the ear bending motor 18 is converted into the linear motion of the motor flexible rod 22, and the following structure can be adopted specifically but not limited to: as shown in fig. 14, the output shaft of the lug motor 18 has an external thread, the center of the motor flexible rod 22 has a threaded hole, and the output shaft of the lug motor 18 is in threaded connection with the motor flexible rod 22.

The bending movement of the bending lugs 302 is accurately controlled by the bending lug motor 18, the control of any angle can be realized, preferably, the included angle between the two bending lugs 302 and the middle plate 301 is 0-29.5 degrees, and according to the actual use requirement, the bending lugs 302 are switched between the state of being parallel to the middle plate 301 and the state of forward turning of the outer sides of the bending lugs 302 to be 29.5 degrees with the middle plate 301.

In fig. 1, a mechanism for controlling the folding operation of the folding lug 302 is referred to as a folding lug assembly 21, and the folding lug assembly 21 includes several main components, namely, the folding lug 302, an intermediate plate 301, and a folding lug motor 18.

Because the utility model discloses the regulation of well headrest is through electric control, in order to avoid wire 10 to expose outside, this embodiment makes following improvement on the basis of embodiment one: as shown in fig. 4, the insertion rod 1 is a tubular structure, a threading hole 101 is formed on the insertion rod 1, and the lead 10 of the ear folding motor 18 is connected with an external power supply through the inside of the insertion rod 1.

Example two

In order to avoid the shaking of the movable ends of the folding lugs 302 when the folding lugs 302 rotate relative to the middle plate 301, in this embodiment, the two folding lugs 302 are provided with the plugboard 23 adapted to pass through the middle plate 301, and the damping structure 11 is arranged between the plugboard 23 and the middle plate 301. As shown in fig. 15, the plugboard 23 penetrates through the middle board 301 along the front-back direction, when the folded lug 302 is turned over relative to the middle board 301, the plugboard 23 cooperates with the middle board 301 to limit the folded lug 302 to a certain extent, the damping structure 11 is a common damping structure in a mechanical structure, in this embodiment, the damping structure 11 includes a damping block 1101 and a damping spring 1102, the damping block 1101 is provided with two through holes, one of the through holes is used for a projection of the middle board 301 to pass through, the other through hole accommodates the damping spring 1102, and two ends of the damping spring 1102 are abutted to upper and lower ends of the plugboard 23 through the damping block 1101.

EXAMPLE III

The embodiment adds the front and back adjusting function of the headrest on the basis of the embodiment, and the specific structure is as follows:

the support main body comprises a motor base 2, a front and rear movable plate 15 and a front and rear adjusting motor 14, the front and rear adjusting motor 14 is fixed on the motor base 2, the front and rear adjusting motor 14 is in transmission fit with the front and rear movable plate 15, the front and rear movable plate 15 is located between the middle plate 301 and the motor base 2, the front and rear movable plate 15 and the middle plate 301 are hinged to a third rotating shaft 16, and the structures are the front and rear adjusting assembly 20 in fig. 1.

As shown in fig. 1, 8, 10 and 11, the front-rear adjusting motor 14 is fixed at the rear end of the motor base 2, the rear side of the motor base 2 is wrapped by the rear plate 4, the front-rear adjusting motor 14 is in transmission fit with the front-rear movable plate 15, the transmission fit mode is the same as that of the ear folding motor 18, the third rotating shaft 16 is located at the lower part of the front-rear movable plate 15 and is arranged along the left-right direction, the rear end of the front-rear movable plate 15 is provided with a plurality of rib plates 1501 penetrating through the motor base 2, the front-rear movable plate 15 cannot be laterally inclined in the front-rear movement process through the limiting of the rib plates 1501 and the motor base 2, the front-rear movable plate 15 drives the middle plate 301 to move in time, when the front-rear movable plate 15 moves forwards, the middle plate 301 is ejected forwards, and the ear folding 302 also moves forwards together; when the front and rear movable plates 15 move backward, the folding lugs 302 and the intermediate plate 301 can be retracted by manually pressing the foam 5.

Example four

The present embodiment adds the tilt angle adjusting function of the headrest on the basis of the third embodiment, and the specific structure is as follows (i.e. the tilt angle adjusting assembly 19 in fig. 1):

the inserted bar 1 is the U-shaped structure, and inserted bar 1 rotates with the top of motor cabinet 2 to be connected in first pivot 7, is fixed with inclination adjustment motor 6 on the inserted bar 1, and inclination adjustment motor 6's output shaft and motor cabinet 2's bottom transmission fit, when inclination adjustment motor 6 started, the relative inclination adjustment motor 6's of motor cabinet 2 output shaft along the fore-and-aft direction motion, and motor cabinet 2 is rotatory around first pivot 7. Because the front and rear movable plates 15, the middle plate 301 and the folding lug 302 are all connected with the direct or indirect motor base 2, when the motor base 2 rotates, the middle plate 301 and the folding lug 302 can also synchronously rotate, thereby realizing the adjustment of the inclination angle of the headrest.

As shown in fig. 6-8, the inserting rod 1 is erected on the top of the motor base 2, two support lugs are fixed on a cross rod on the top of the inserting rod 1, the first rotating shaft 7 is hinged to the support lugs and the motor base 2, the inserting rod 1 is fixed with the tilt angle adjusting motor 6, an output shaft of the tilt angle adjusting motor 6 is in transmission fit with the bottom of the motor base 2, when the tilt angle adjusting motor 6 is started, the motor base 2 moves in the front-back direction relative to the output shaft of the tilt angle adjusting motor 6, and the motor base 2 rotates around the first rotating shaft 7. As shown in fig. 2 and 4, a mounting plate 9 is fixed on two vertical rods of the inserting rod 1 in a transverse manner, the tilt angle adjusting motor 6 is fixed on the mounting plate 9, and an output shaft of the tilt angle adjusting motor 6 extends backward, can extend horizontally backward, and can slightly incline. When the reclining motor 6 is activated, the bottom of the motor base 2 is turned forward or backward about the first rotation shaft 7, thereby tilting the headrest.

Because the inclination adjustment of headrest means forward or backward inclining, consequently first pivot 7 level sets up, and perpendicular with the fore-and-aft direction, it is also parallel with third pivot 16 that first pivot 7 is, first pivot 7 is the rotation fulcrum of motor cabinet 2, when inclination adjustment motor 6 stop work, inclination adjustment motor 6's output shaft and motor cabinet 2's bottom relatively fixed, thereby play the supporting role to the bottom of motor cabinet 2, the top and the bottom of motor cabinet 2 all have the strong point, effectively avoid electronic headrest to rock.

Preferably, the rotation angle of the motor base 2 ranges from 0 ° to 29 °, and the angle of the front end surface of the middle plate 301 with respect to the vertical direction ranges from 0 ° to 29 ° according to the actual use requirement, that is, the middle plate 301 can be changed between the vertical state and the state of lying down to 29 °.

The transmission fit of the output shaft of the tilt angle adjusting motor 6 and the motor base 2 is the same as the transmission fit of the lug motor 18 and the motor flexible rod 22, and it should be particularly noted that the back-and-forth movement of the bottom of the motor base 2 is a rotary movement around the first rotating shaft 7, but not a linear movement along the output shaft of the tilt angle adjusting motor 6, so as shown in fig. 5 and 8, the bottom of the motor base 2 is hinged with a loose joint nut 8, and the loose joint nut 8 is in threaded connection with the output shaft of the tilt angle adjusting motor 6. The articulated of loose joint nut 8 and motor cabinet 2 can make the angle of motor cabinet 2 and inclination adjustment motor 6's output shaft adjustable, avoids the card dead.

In order to reduce the stress of the output shaft of the tilt angle adjusting motor 6, preferably, two sides of the motor base 2 are provided with long grooves 201 suitable for the insertion rod 1 to pass through, and a damping structure 11 may be arranged between the long grooves 201 and the insertion rod 1, when the motor base 2 is turned over, the position of the insertion rod 1 in the long groove 201 changes, and the damping structure 11 may reduce structural vibration, so that the turning over of the tilt headrest portion is more stable. As shown in fig. 9, two damping structures 11 are provided, and are respectively located in two long grooves 201, two through holes are provided on a damping block 1101, one of the through holes is for a U-shaped insertion rod 1 to pass through, a damping spring 1102 is placed in the other through hole, the damping block 1101 is made of an elastic material, and the damping spring 1102 is used for extruding the damping block 1101.

EXAMPLE five

The motor base 2 is mainly used as a mounting base, and due to the limitation of the internal space, the end surface shape of the motor base 2 is difficult to be matched with the intermediate plate 301, therefore, the embodiment is improved on the basis of the fourth embodiment as follows, the front end of the motor base 2 is also rotatably connected with the swinging plate 12, the motor base 2 and the swinging plate 12 are rotatably connected to the second rotating shaft 13, the second rotating shaft 13 is arranged in parallel with the first rotating shaft 7, and when the front rear movable plate 15 is positioned at the rearmost part, the intermediate plate 301 is arranged to be attached to the front end of the swinging plate 12; when the front and rear movable plates 15 move forward, the intermediate plate 301 is separated from the swing plate 12.

As shown in fig. 3 and 8, the second rotating shaft 13 is located in front of the lower portion of the motor base 2, the lower portion of the swing plate 12 is hinged to the second rotating shaft 13, the front end surface of the swing plate 12 is partially matched with the middle plate 301, a certain space is left in the center of the swing plate 12 to accommodate the front and rear movable plates 15, the middle plate 301 is only attached to the front end of the swing plate 12 and is not fixed to the swing plate 12, when the front and rear movable plates 15 move forward, the swing plate 12 is not moved, the middle plate 301 is pushed forward, and at this time, the middle plate 301 is separated from the swing plate 12, and the inclination angle adjustment operation cannot be performed; when the front and rear movable plates 15 move backward, the intermediate plate 301 is pushed backward by hand, and the intermediate plate 301 is attached to the front end of the swing plate 12, so that the tilt angle adjustment operation can be performed. When the bottom of the motor base 2 moves obliquely, the bottom of the swing plate 12 moves forward or backward along with the motor base 2, the upper part of the swing plate 12 can be directly supported by the motor base 2, and when the swing plate 12 rotates, the second rotating shaft 13 is a moving shaft, and the headrest rotates around the first rotating shaft 7. When the swing plate 12 is turned, the swing plate 12 moves the intermediate plate 301, and at the same time, the intermediate plate 301 moves the front and rear movable plates 15, so that the entire headrest can be turned synchronously.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. An electric headrest with adjustable tabs, comprising:

the inserting rod (1) is fixedly connected with the seat;

the supporting body is connected with the inserted bar (1) and can be relatively fixed;

the middle plate (301) is positioned at the front end of the supporting body, and is supported and fixed by the supporting body; a lug folding motor (18) is fixed on the middle plate (301);

roll over ear (302), roll over ear (302) and be provided with two, be located the left and right sides of intermediate lamella (301) front end respectively, two roll over the one end of ear (302) with intermediate lamella (301) are articulated, roll over the other end of ear (302) by it is rotatory to roll over ear motor (18) drive, so that two roll over the contained angle change of ear (302) and intermediate lamella (301).

2. The motorized headrest with adjustable earpieces of claim 1, further comprising: an output shaft of the lug folding motor (18) is in transmission fit with a motor flexible rod (22), two long grooves (2201) are formed in the motor flexible rod (22), and the two folding lugs (302) are connected with the motor flexible rod (22) through the two long grooves (2201) respectively; when the ear folding motor (18) is started, the ear folding (302) can slide laterally in the long-shaped groove (2201).

3. The motorized headrest with adjustable earpieces of claim 1, further comprising: the inserted bar (1) is of a tubular structure, a threading hole (101) is formed in the inserted bar (1), and a lead (10) of the lug folding motor (18) is connected with an external power supply through the inside of the inserted bar (1).

4. The motorized headrest with adjustable earpieces of claim 1, further comprising: the two folding lugs (302) are provided with inserting plates (23) suitable for penetrating through the middle plate (301), and a damping structure (11) is arranged between each inserting plate (23) and the middle plate (301).

5. The motorized headrest with adjustable earpieces of claim 1, further comprising: the support main part includes motor cabinet (2), front and back fly leaf (15) and front and back accommodate motor (14), front and back accommodate motor (14) are fixed in on motor cabinet (2), front and back accommodate motor (14) with front and back fly leaf (15) transmission fit, front and back fly leaf (15) are located between intermediate lamella (301) and motor cabinet (2), front and back fly leaf (15) with intermediate lamella (301) hinge in third pivot (16).

6. The motorized headrest with adjustable earpieces of claim 5, further comprising: the front and rear movable plates (15) are provided with a plurality of rib plates (1501) penetrating through the motor base (2).

7. The motorized headrest with adjustable earpieces of claim 5, further comprising: inserted bar (1) is the U-shaped structure, inserted bar (1) with the top of motor cabinet (2) is rotated and is connected in first pivot (7), is fixed with inclination adjustment motor (6) on inserted bar (1), the output shaft of inclination adjustment motor (6) and the bottom transmission cooperation of motor cabinet (2), when inclination adjustment motor (6) start-up, the output shaft of the relative inclination adjustment motor (6) of motor cabinet (2) is along the fore-and-aft direction motion, motor cabinet (2) wind first pivot (7) are rotatory.

8. The motorized headrest with adjustable earpieces of claim 1, further comprising: the included angle between the two folding lugs (302) and the middle plate (301) is 0-29.5 degrees.

9. The motorized headrest with adjustable earpieces of claim 7, further comprising: the front end of the motor base (2) is also rotatably connected with a swinging plate (12), the motor base (2) and the swinging plate (12) are rotatably connected to a second rotating shaft (13), the second rotating shaft (13) is arranged in parallel with the first rotating shaft (7), and when the front and rear movable plates (15) are positioned at the rearmost part, the middle plate (301) is attached to the front end of the swinging plate (12); when the front and rear movable plates (15) move forward, the intermediate plate (301) is separated from the swing plate (12).

10. The motorized headrest with adjustable earpieces of claim 7, further comprising: an external thread is arranged on an output shaft of the inclination angle adjusting motor (6), a loose joint nut (8) is hinged to the bottom of the motor base (2), and the loose joint nut (8) is in threaded connection with the output shaft of the inclination angle adjusting motor (6).

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