Manual four-way headrest with music function

Abstract

The manual four-way headrest with the music function comprises a headrest front shell, a loudspeaker and a front-back sliding plate are arranged in an inner cavity of the headrest front shell, the front-back sliding plate is connected with a headrest framework in a sliding mode, a left headrest rod and a right headrest rod are arranged on the left side and the right side of the headrest framework, and the left headrest rod and the right headrest rod are connected with the loudspeaker. A four-direction adjusting structure matched with the left headrest rod, the right headrest rod and the front-back sliding plate is arranged in the headrest framework, the headrest rear shell is connected with the headrest front shell, and the loudspeaker, the front-back sliding plate, the headrest framework, the left headrest rod, the right headrest rod and the four-direction adjusting structure are arranged between the headrest rear shell and the headrest front shell. According to the utility model, the loudspeaker for playing multimedia and the four-way adjusting structure are arranged in the limited space of the seat headrest, the multimedia can be played for a driver and passengers through the loudspeaker, and the headrest can be subjected to four-way multi-gear adjustment through the four-way adjusting structure, so that the safety of the driver and the passengers is guaranteed, and the safety of the driver and the passengers is improved. And the requirements of drivers and passengers on different positions of the seat headrest are also considered.

Description

Technical Field

[0001] This utility model belongs to the field of automotive seat headrests, specifically relating to a manual four-way headrest with music function. Background Technology

[0002] As people's living standards improve, their functional requirements for family cars are also increasing. To enhance comfort during travel, existing car seat headrests often include music headrests, providing multimedia music enjoyment for drivers and passengers. However, due to limited internal space, if speakers are installed inside the headrest, a four-way adjustment structure cannot be provided to accommodate the different headrest position needs of various drivers and passengers. Currently, the most that can be provided with a two-way adjustment structure is the maximum, accommodating speakers. For example, patent application number 2023112242528, entitled "A Novel Ultra-thin Electric Two-way Music Headrest," provides a front-to-back adjustment structure while also including speakers for music functionality, but it cannot adjust the headrest vertically, thus failing to meet the different headrest height needs of various drivers and passengers. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned problems by providing a manual four-way headrest with music function. This four-way headrest can provide multimedia music enjoyment for drivers and passengers, and can also be adjusted in four directions (up, down, forward, and backward) with multiple positions. This ensures the safety of drivers and passengers and also takes into account their needs for different positions of the headrest.

[0004] To achieve the above objectives, this utility model provides a manual four-way headrest with music function, including a headrest front shell, a speaker, front and rear sliding plates, a headrest frame, a left headrest rod, a right headrest rod, a four-way adjustment structure, and a headrest rear shell. The speaker and the front and rear sliding plates are provided in the inner cavity of the headrest front shell. The front and rear sliding plates are slidably connected to the headrest frame. The left and right sides of the headrest frame are provided with a left headrest rod and a right headrest rod. The headrest frame is provided with a four-way adjustment structure that cooperates with the left headrest rod, the right headrest rod, and the front and rear sliding plates. The headrest rear shell is connected to the headrest front shell, and the speaker, the front and rear sliding plates, the headrest frame, the left headrest rod, the right headrest rod, and the four-way adjustment structure are placed between the headrest rear shell and the headrest front shell.

[0005] Advantages and beneficial effects of this utility model

[0006] 1. This utility model provides two speakers between the front shell of the headrest and the front and rear sliding plates to provide multimedia music enjoyment for drivers and passengers. The front and rear sliding plates are slidably connected to the headrest frame on the side away from the speakers. The headrest frame is equipped with a four-way adjustment structure, which includes a button assembly, a lateral push assembly, and an up-down unlocking assembly and a front-back unlocking assembly that cooperate with the lateral push assembly. The button assembly can drive the lateral push assembly to move laterally, and finally, the lateral push assembly drives the up-down unlocking assembly to move laterally and the front-back unlocking assembly to move longitudinally, thereby unlocking the headrest rod and the front and rear sliding plates to allow for four-way multi-position adjustment of the seat headrest.

[0007] 2. The up-and-down unlocking assembly of this utility model includes a left headrest rod locking structure, a left headrest rod lower cover, a right headrest rod locking structure, and a right headrest rod lower cover. The left and right headrest rods are unlocked or locked by the lateral pushing assembly. Since this utility model has a left headrest rod locking structure, and the left headrest rod lower cover, the right headrest rod locking structure, and the right headrest rod lower cover fix the headrest rod, the seat headrest is more stable when adjusting up and down.

[0008] 3. In this utility model, the front and rear sliding plates are equipped with moving tracks, and the headrest frame is equipped with slide holes at the position of the moving tracks. The front and rear sliding plates drive the front and rear shells of the headrest to move back and forth relative to the headrest frame. The bottom surface of the middle part of the moving track is equipped with multiple locking grooves for adjusting the front and rear positions. The lateral pushing assembly drives the front and rear unlocking assembly to move longitudinally, so as to lock or unlock the front and rear unlocking assembly with the locking grooves. Therefore, the seat headrest is more stable when adjusting in the front and rear direction. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the overall structure provided in the embodiment of this utility model;

[0011] Figure 2 This is a schematic diagram of the headrest back cover after removal, provided in an embodiment of this utility model;

[0012] Figure 3 This is a schematic diagram of the headrest after removing the back shell and headrest frame according to an embodiment of the present utility model;

[0013] Figure 4This is an exploded view of the seat headrest provided in this embodiment of the utility model;

[0014] Figure 5 This is a schematic diagram of the front and rear sliding plate structure provided in an embodiment of the present utility model;

[0015] Figure 6 This is a schematic diagram of the headrest frame structure provided in an embodiment of the present utility model;

[0016] Figure 7 This is an exploded view of the four-way adjustment structure provided in this embodiment of the utility model;

[0017] Figure 8 This is a schematic diagram of the installation of the transverse push rod and the locking structure of the left and right headrest rods provided in this embodiment of the utility model;

[0018] Figure 9 This is a schematic diagram of the structure of the transverse push rod and the left and right headrest rod locking structure after installation, provided in this embodiment of the utility model.

[0019] Figure 10 This is a schematic diagram of the transverse push rod structure provided in an embodiment of the present utility model;

[0020] Figure 11 This is a schematic diagram of the transverse push rod from another angle provided in this embodiment of the utility model;

[0021] Figure 12 This is a front sectional view of the headrest provided in this embodiment of the utility model;

[0022] Figure 13 This is a schematic diagram of the left headrest locking structure provided in an embodiment of the present invention;

[0023] Figure 14 This is a schematic diagram of the left locking block structure in the left headrest locking structure provided in this embodiment of the utility model;

[0024] Figure 15 This is a schematic diagram of the left guide sleeve structure in the left headrest locking structure provided in this embodiment of the utility model;

[0025] Figure 16 This is a schematic diagram of the right headrest locking structure provided in an embodiment of the present invention;

[0026] Figure 17 This is a schematic diagram of the structure of the left headrest lower cover and the right headrest rod lower cover provided in this embodiment of the utility model;

[0027] Figure 18 This is a side sectional view of the headrest provided in an embodiment of the present utility model;

[0028] Figure label:

[0029] Pillow front shell 1, speaker 2;

[0030] Front and rear sliding plates 3 31. Moving slide 32. First claw 32. Locking groove 33;

[0031] Headrest frame 4 41. Connecting hole; 42. First limiting groove; 43. Left locking structure mounting hole; 44. Left guide sleeve mounting hole; 45. Right locking structure mounting hole; 46. Right guide sleeve mounting hole; 47. Slide hole; 48. Lock tongue mounting hole; 49. Lateral push rod mounting cavity.

[0032] Left headrest bar 5, right headrest bar 6;

[0033] Four-way adjustment structure 7 ;

[0034] Button Assembly 71 711 Button, 712 Button reset spring, 713 Button cover;

[0035] Lateral drive assembly 72 Horizontal push rod 721, left headrest rod clearance hole 7211, left limit pawl 7212, unlocking arm 7213, right limit pawl 7214, first spring connecting hole 7215, left locking block pawl 7216, right locking block pawl 7217, horizontal push rod return spring 722.

[0036] Upper and lower unlocking assembly 73;

[0037] Left headrest bar locking structure 731 Left locking block 7311, left locking block body 73111, first snap-fit ​​hole 73112, connecting arm 73113, left headrest rod locking hole 73114, first connecting post 73115, left guide sleeve 7312, left locking block mounting cavity 73121, first guide rail 73122, first left headrest rod mounting hole 73123, first lower limit pawl 73124, upper limit pawl 73125, left locking block reset spring 7313;

[0038] Left headrest bar under cover 732 Second left headrest rod mounting hole 7321, reinforced version 7322, third claw 7323, fourth locking hole 7324;

[0039] Right headrest rod locking structure 733 7331 right locking block, 73311 right locking block slot, 73312 second limit slot, 73313 second locking hole, 73314 second locking claw, 73315 third locking hole, 73316 second connecting post, 7332 right guide sleeve, 73321 right locking block mounting cavity, 73322 first right headrest rod mounting hole, 73323 second lower limit locking claw, 7333 right locking block return spring;

[0040] Right headrest bar undersleeve 734;

[0041] Front and rear unlocking assembly 74 741 locking tongue, 7411 unlocking block, 742 locking tongue return spring;

[0042] Headrest back cover 8 and pin 9. Detailed Implementation

[0043] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0044] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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.

[0045] like Figures 1-4 As shown, a manual four-way headrest with music function includes a headrest front shell 1, a speaker 2, front and rear sliding plates 3, a headrest frame 4, a left headrest rod 5, a right headrest rod 6, a four-way adjustment structure 7, and a headrest rear shell 8. The speaker 2 and the front and rear sliding plates 3 are screwed into the inner cavity of the headrest front shell 1. The speaker 2 is used to play music for the driver and passengers. The front and rear sliding plates 3 are used to drive the headrest front shell 1, speaker 2, four-way adjustment structure 7, and headrest rear shell 8 to slide back and forth relative to the headrest frame 4. The left headrest rod 5 and right headrest rod 6 are provided on the left and right sides of the headrest frame 4. The headrest frame 4 has a four-way adjustment structure 7 that cooperates with the left headrest rod 5, right headrest rod 6, and front and rear sliding plates 3. The headrest rear shell 8 is snapped into the headrest front shell 1 and houses the speaker 2, front and rear sliding plates 3, headrest frame 4, left headrest rod 5, right headrest rod 6, and four-way adjustment structure 7.

[0046] like Figure 4 and Figure 5As shown, the front and rear sliding plate 3 has a sliding track 31 on the side away from the speaker 2. The left and right sides of the end of the sliding track 31 have first claws 32 for limiting movement. When the front and rear sliding plate 3 slides back and forth relative to the headrest frame 4 through the sliding track 31, the first claws 32 cooperate with the edge of the slide hole 47 on the headrest frame 4 to limit the maximum forward sliding distance of the front and rear sliding plate 3. The maximum backward sliding distance of the front and rear sliding plate 3 is limited by the rear side of the front and rear sliding plate 3 contacting the front side of the headrest frame 4. The bottom surface of the middle part of the sliding track 31 has multiple locking grooves 33. The multiple locking grooves 33 are multiple front and rear adjustment positions that cooperate with the locking tongue 741 in the four-way adjustment structure 7. The distance of forward or backward movement of the seat headrest is adjusted by the locking tongue 741 contacting the locking grooves 33 at different positions (see...). Figure 3 ).

[0047] See Figure 2 and Figure 6 As shown, the headrest frame 4 has connecting holes 41 on both the left and right sides for installing the left headrest rod 5 and the right headrest rod 6. The headrest frame 4, relative to the left headrest rod 5, has a first limiting groove 42, a left locking structure mounting hole 43, and a left guide sleeve mounting hole 44, arranged from top to bottom. The left headrest rod 5 has a pin 9 at its top, and the left headrest rod 5 is slidably connected to the first limiting groove 42 via the pin 9 to limit the maximum upward or downward movement of the seat headrest relative to the headrest rod. The left locking structure mounting hole 43 is used to install the left headrest rod locking structure 731 in the four-way adjustment structure 7, and the left guide sleeve mounting hole 44 is used to install the left headrest rod lower cover 732 in the four-way adjustment structure 7. The headrest frame 4, relative to the right headrest rod 6, has a first limiting groove 42, a right locking structure mounting hole 45, and a right guide sleeve mounting hole 46, arranged from top to bottom. The right headrest rod 6 is slidably connected to the first limiting groove 42 via the pin 9 to limit the maximum upward or downward movement of the seat headrest relative to the headrest rod. The maximum upward or downward movement distance of the seat headrest relative to the headrest rod is limited. The right locking structure mounting hole 45 is used to install the right headrest rod locking structure 734 in the four-way adjustment structure 7. The right guide sleeve mounting hole 46 is used to install the right headrest rod lower sleeve 733 in the four-way adjustment structure 7. There is a slide hole 47 between the first limiting grooves 42 on both sides, which is slidably connected to the front and rear sliding plates 3. The middle of the slide hole 47 has a locking tongue mounting hole 48 that cooperates with the front and rear unlocking assembly 74 in the four-way adjustment structure 7. The headrest frame 4 has a transverse push rod mounting cavity 49 at the position relative to the left locking structure mounting hole 43 and the right locking structure mounting hole 45. The transverse push rod mounting cavity 49 is used to install the transverse push assembly 72 in the four-way adjustment structure 7. The transverse push assembly 72 moves laterally, thereby driving the left headrest rod locking structure 731 and the right headrest rod locking structure 734 to move laterally, and driving the front and rear unlocking assembly 74 to move longitudinally.

[0048] like Figure 3 and Figure 7 As shown, the four-way adjustment structure 7 includes a button assembly 71, a lateral push assembly 72, an up-down unlocking assembly 73, and a front-back unlocking assembly 74. The button assembly 71 is snapped onto the headrest back shell 8 and contacts the lateral push assembly 72. Pressing the button assembly 71 causes the lateral push assembly 72 to move laterally. The lateral push assembly 72 is mounted on the headrest frame 4 through the lateral push rod mounting cavity 49 and cooperates with the up-down unlocking assembly 73 and the front-back unlocking assembly 74, causing the up-down unlocking assembly 73 to move laterally and the front-back unlocking assembly 74 to move longitudinally. The up-down unlocking assembly 73 cooperates with the left headrest rod 5 and the right headrest rod 6, and unlocks and locks the headrest rods through lateral movement. The locking tongue 741 in the front-back unlocking assembly 74 cooperates with the locking groove 33 on the front and back sliding plates 3, and unlocks and locks the front and back sliding plates 3 through longitudinal movement.

[0049] like Figure 7 As shown, the button assembly 71 includes a button 711, a button reset spring 712, and a button cover 713. The button 711 is connected to one end of the button reset spring 712, and the other end of the button reset spring 712 is connected to the button cover 713. The button 711 is snapped onto the button cover 713, and the button reset spring 712 is disposed between the button 711 and the button cover 713. The button assembly 71 is snapped onto the headrest back cover 8 through the button cover 713.

[0050] like Figures 8-12As shown, the lateral push assembly 72 includes a lateral push rod 721 and a lateral push rod return spring 722. The lateral push rod 721 has a left headrest rod clearance hole 7211 at a position relative to the left headrest rod 5. The upper surface to the right of the left headrest rod clearance hole 7211 has, in sequence, a left limiting claw 7212 that cooperates with the headrest frame 4, an unlocking arm 7213 that cooperates with the front and rear unlocking assembly 74, and a right limiting claw 7214 that cooperates with the headrest frame 4. The left limiting claw 7212 and the right limiting claw 7214 cooperate with the headrest frame 4 to laterally limit and connect the lateral push assembly 72. The right limiting claw 7214 has a first spring connection hole 72 on the side opposite to the left limiting claw 7212. 15. The first spring connecting hole 7215 is connected to one end of the transverse push rod return spring 722, and the other end of the transverse push rod return spring 722 is connected to the headrest frame 4. The transverse push rod return spring 722 is used to help the transverse push rod 721 quickly return to its original position. The lower surface on the right side of the left headrest rod clearance hole 7211 is sequentially equipped with a left locking block claw 7216 and a right locking block claw 7217 that cooperate with the upper and lower unlocking assembly 73. The transverse push rod 721 drives the left headrest rod locking structure 731 and the right headrest rod locking structure 733 that cooperate with it in the upper and lower unlocking assembly 73 to unlock or lock the left headrest rod 5 and the right headrest rod 6.

[0051] like Figure 3 and Figure 7 As shown, the upper and lower unlocking assembly 73 includes a left headrest rod locking structure 731, a left headrest rod lower sleeve 732, a right headrest rod locking structure 733, and a right headrest rod lower sleeve 734. The left headrest rod locking structure 731 and the left headrest rod lower sleeve 732 are connected to the left headrest rod 5, and the right headrest rod locking structure 733 and the right headrest rod lower sleeve 734 are connected to the right headrest rod 6. The left headrest rod locking structure 731 and the right headrest rod locking structure 734 are connected to the right headrest rod 6. Structure 733 engages with the lateral push assembly 72. The lateral push assembly 72 drives the left headrest rod locking structure 731 and the right headrest rod locking structure 733 to move laterally, thereby unlocking or locking the left headrest rod 5 and the right headrest rod 6. The left headrest rod locking structure 731, the left headrest rod lower sleeve 732, the right headrest rod locking structure 733 and the right headrest rod lower sleeve 734 are fixed together, which can make the headrest rod more stable when adjusting in the vertical direction.

[0052] like Figures 13-15As shown, the left headrest rod locking structure 731 includes a left locking block 7311 and a left guide sleeve 7312. The left locking block 7311 includes a left locking block body 73111, which has a first engaging hole 73112 that engages with the lateral push assembly 72. One side of the left locking block body 73111 has two connecting arms 73113 extending towards the left guide sleeve 7312 to form a left headrest rod locking hole 73114 for engaging the left headrest rod 5. The two connecting arms 73113 have first connecting posts 73115, which are connected to one end of a left locking block return spring 7313. The other end of the left locking block return spring 7313 is connected to the left guide sleeve 7312. The left locking block return spring 7313 helps the left locking block 7311 to quickly return to its original position. The left guide sleeve 7312 has a left locking mechanism inside its lateral direction. The left locking block mounting cavity 73121 has first guide rails 73122 on its left and right inner walls. The left locking block 7311 is slidably connected to the left locking block mounting cavity 73121 through the first guide rails 73122. The left guide sleeve 7312 has a through first left headrest rod mounting hole 73123 in its longitudinal direction. The first left headrest rod mounting hole 73123 and the left headrest rod locking hole 73114 together form The left headrest rod 5 has a movement track for vertical movement. The left guide sleeve 7312 has a first lower limit claw 73124 on its left and right outer walls and an upper limit claw 73125 on its top. The left guide sleeve 7312 is engaged in the left locking structure mounting hole 43 of the headrest frame 4 by the upper limit claw 73125 and the first lower limit claw 73124, and limits the installation position of the left headrest rod locking structure 731.

[0053] like Figure 16As shown, the right headrest rod locking structure 733 includes a right locking block 7331 and a right guide sleeve 7332. The right locking block 7331 has a right locking block slot 73311 on one side relative to the transverse push assembly 72. The top of the right locking block slot 73311 is a second limiting groove 73312, and the bottom of the right locking block slot 73311 has a second engaging hole 73313. The right locking block claw 7217 on the transverse push rod 721 slides into the right locking block 7311 through the second limiting groove 73312 and engages with the second engaging hole 73313. Therefore, the right locking block 7331 can slide left and right relative to the right guide sleeve 7332 by the lateral movement of the lateral push rod 721. The right side of the second limiting groove 73312 has a second claw 73314 and a third engaging hole 73315. The right locking block 7331 engages with the right guide sleeve 7332 through the second claw 73314 to prevent the right locking block return spring 7333 from disengaging from the right headrest rod locking structure 733. The bottom of the third engaging hole 73315 has a second connecting post 73316, which engages with the right locking block return spring. One end of the right locking block return spring 7333 is connected to the right guide sleeve 7332, and the other end of the right locking block return spring 7333 is connected to the right guide sleeve 7332. The right locking block return spring 7333 is used to help the right locking block 7331 quickly return to its original position. The right guide sleeve 7332 has a right locking block mounting cavity 73321 in its transverse direction. The right locking block 7331 is slidably connected to the right guide sleeve 7332 through the right locking block mounting cavity 73321. The right guide sleeve 7332 has a through first right headrest rod mounting hole 73322 in its longitudinal direction. The first right headrest rod mounting hole 73322 and the third snap-fit ​​hole 73322 are connected to each other. 3315 together form a motion track for the right headrest rod to move up and down. The left and right outer walls of the right guide sleeve 7332 are equipped with second lower limit claws 73323. The right guide sleeve 7332 is engaged with the headrest frame 4 through the second lower limit claws 73323. The right headrest rod locking structure 733 is upper limited in the installation position of the right headrest rod locking structure 733 by the cooperation between the upper surface of the right guide sleeve 7332 and the right locking structure mounting hole 45, and the installation position of the right headrest rod locking structure 733 is lower limited by the second lower limit claws 73323.

[0054] like Figure 17As shown, the left headrest rod lower sleeve 732 and the right headrest rod lower sleeve 734 have the same structure. This embodiment takes the left headrest rod lower sleeve 732 as an example for explanation. The left headrest rod lower sleeve 732 has a second left headrest rod mounting hole 7321 for connecting the left headrest rod 5 in the longitudinal direction. The top of the second left headrest rod mounting hole 7321 has a reinforcing plate 7322 around it. The reinforcing plate 7322 is used to strengthen the strength of the left headrest rod lower sleeve 732. The left headrest rod lower sleeve 732 has a third claw 7323 and a fourth locking hole 7324 around it. The left headrest rod lower sleeve 732 is installed in the left guide sleeve mounting hole 44 through the third claw 7323 and the fourth locking hole 7324.

[0055] like Figure 7 and Figure 18 As shown, the front and rear unlocking assembly 74 includes a latch 741 and a latch return spring 742. The top of the latch 741 passes through the latch mounting hole 48 on the headrest frame 4 and contacts the locking groove 33 on the front and rear sliding plates 3. The back of the latch 741 has a second spring connecting hole. One end of the latch return spring 742 is connected to the latch 741 through the second spring connecting hole, and the other end of the latch return spring 742 is connected to the headrest frame 4. Figure 3 As shown, the bottom of the latch 741 has an unlocking block 7411. The lower surface of the unlocking block 7411 is a downwardly inclined slope. The latch 741 moves longitudinally by cooperating with the unlocking arm 7213 on the transverse push rod 721 through the inclined surface.

[0056] Unlocking process

[0057] Pressing button assembly 71 causes button 711 to move to the right. The button return spring 712 compresses and stores elastic potential energy as button 711 moves. The rightward movement of button 711 contacts the lateral push rod 721 in the lateral push assembly 72, causing it to move to the right. The lateral push rod 721 moves to the right, which in turn drives the left locking block 7311 on the left headrest rod locking structure 731 to move to the right via the left locking block pawl 7216. The unlocking arm 7213 moves to the right, which in turn drives the locking tongue 741 via the inclined plane. Moving downwards, the right locking block claw 7217 drives the right locking block 7331 on the right headrest rod locking structure 733 to move to the right, thereby causing the left locking block 7311 to disengage from the locking groove on the left headrest rod 5, and the right locking block 7331 to disengage from the locking groove on the right headrest rod 6, allowing the seat headrest to move upwards or downwards relative to the headrest rod, causing the locking tongue 741 to disengage from the locking groove 33 at the bottom of the moving slide 31, allowing the seat headrest to move forwards or backwards relative to the headrest rod.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the present utility model.

Claims

1. A manually operated four-way headrest with music function, characterized in that: The headrest includes a front shell (1), a speaker (2), front and rear sliding plates (3), a headrest frame (4), a left headrest rod (5), a right headrest rod (6), a four-way adjustment structure (7), and a rear shell (8). The front shell (1) contains a speaker (2) and a front and rear sliding plate (3). The front and rear sliding plates (3) are slidably connected to the headrest frame (4). The left and right sides of the headrest frame (4) contain a left headrest rod (5) and a right headrest rod (6). The headrest frame (4) contains a four-way adjustment structure (7) that cooperates with the left headrest rod (5), the right headrest rod (6), and the front and rear sliding plates (3). The rear shell (8) is connected to the front shell (1), and the speaker (2), the front and rear sliding plates (3), the headrest frame (4), the left headrest rod (5), the right headrest rod (6), and the four-way adjustment structure (7) are placed between the rear shell (8) and the front shell (1).

2. The manually operated four-way headrest with music function according to claim 1, characterized in that: The front and rear sliding plates (3) have a sliding track (31) on the side away from the speaker (2). The sliding track (31) has first claws (32) on both sides of its end. The bottom surface of the sliding track (31) has multiple locking grooves (33) for forward and backward movement.

3. The manually operated four-way headrest with music function according to claim 1, characterized in that: The headrest frame (4) has connecting holes (41) on its left and right sides for installing the left headrest rod (5) and the right headrest rod (6). The headrest frame (4) has, from top to bottom, a first limiting groove (42), a left locking structure mounting hole (43), and a left guide sleeve mounting hole (44) relative to the left headrest rod (5). A pin (9) is provided at the top of the left headrest rod (5), and the left headrest rod (5) is slidably connected to the first limiting groove (42) via the pin (9). The headrest frame (4) has, from top to bottom, a first limiting groove (42) relative to the right headrest rod (6). The headrest rod has a right locking structure mounting hole (45) and a right guide sleeve mounting hole (46). The right headrest rod is slidably connected to the first limiting groove (42) by a pin (9). There is a slide hole (47) between the two sides of the first limiting groove (42) that is slidably connected to the front and rear sliding plates (3). The middle part of the slide hole (47) has a locking tongue mounting hole (48) that cooperates with the four-way adjustment structure (7). The headrest frame (4) has a transverse push rod mounting cavity (49) at the position relative to the left locking structure mounting hole (43) and the right locking structure mounting hole (45).

4. A manually operated four-way headrest with music function according to claim 1, characterized in that: The four-way adjustment structure (7) includes a button assembly (71), a lateral push assembly (72), an up-down unlocking assembly (73), and a front-back unlocking assembly (74). The button assembly (71) is snapped onto the headrest back shell (8) and contacts the lateral push assembly (72). The lateral push assembly (72) is connected to the headrest frame (4) and cooperates with the up-down unlocking assembly (73) and the front-back unlocking assembly (74) to drive the up-down unlocking assembly (73) to move laterally and drive the front-back unlocking assembly (74) to move longitudinally. The up-down unlocking assembly (73) cooperates with the left headrest rod (5) and the right headrest rod (6) to unlock and lock the headrest rods. The front-back unlocking assembly (74) cooperates with the front and back sliding plates (3) to unlock and lock the front and back sliding plates (3).

5. A manually operated four-way headrest with music function according to claim 4, characterized in that: The lateral push assembly (72) includes a lateral push rod (721) and a lateral push rod return spring (722). The lateral push rod (721) has a left headrest rod clearance hole (7211) at a position relative to the left headrest rod (5). The upper surface of the left headrest rod clearance hole (7211) has, in sequence, a left limiting claw (7212) that cooperates with the headrest frame (4), an unlocking arm (7213) that cooperates with the front and rear unlocking assembly (74), and a right limiting claw (7214) that cooperates with the headrest frame (4). The right limiting claw (7214) has a first spring connecting hole (7215) on the side opposite to the left limiting claw (7212). The first spring connecting hole (7215) is connected to one end of the transverse push rod return spring (722). The other end of the transverse push rod return spring (722) is connected to the headrest frame (4). The lower surface of the left headrest rod clearance hole (7211) has a left locking block claw (7216) and a right locking block claw (7217) that cooperate with the upper and lower unlocking assembly (73).

6. A manually operated four-way headrest with music function according to claim 4, characterized in that: The upper and lower unlocking assembly (73) includes a left headrest rod locking structure (731), a left headrest rod lower sleeve (732), a right headrest rod locking structure (733), and a right headrest rod lower sleeve (734). The left headrest rod locking structure (731) and the left headrest rod lower sleeve (732) are connected to the left headrest rod (5), and the right headrest rod locking structure (733) and the right headrest rod lower sleeve (734) are connected to the right headrest rod (6). The left headrest rod locking structure (731) and the right headrest rod locking structure (733) are engaged with the lateral push assembly (72). The lateral push assembly (72) drives the left headrest rod locking structure (731) and the right headrest rod locking structure (733) to move laterally, so as to unlock or lock the left headrest rod (5) and the right headrest rod (6).

7. A manually operated four-way headrest with music function according to claim 6, characterized in that: The left headrest rod locking structure (731) includes a left locking block (7311) and a left guide sleeve (7312). The left locking block (7311) includes a left locking block body (73111), which has a first engaging hole (73112) that engages with the transverse push assembly (72). One side of the left locking block body (73111) has two connecting arms (73113) extending toward the left guide sleeve (7312) to form a left headrest rod locking hole (73114) for engaging the left headrest rod (5). The two connecting arms (73113) have a first connecting post (73115), which is connected to one end of the left locking block return spring (7313). The other end of the left locking block return spring (7313) is connected to the left guide sleeve (7312). The left guide sleeve (7312) has a left locking block mounting cavity (73121) in its transverse interior. The left locking block mounting cavity (73121) has a first guide rail (73122) on its opposite inner walls. The left guide sleeve (7312) has a through first left headrest rod mounting hole (73123) in its longitudinal direction. The left guide sleeve (7312) has a first lower limit pawl (73124) on its opposite outer walls. The left guide sleeve (7312) has an upper limit pawl (73125) on its top. The left guide sleeve (7312) is engaged with the headrest frame (4) by the upper limit pawl (73125) and the first lower limit pawl (73124).

8. A manually operated four-way headrest with music function according to claim 6, characterized in that: The right headrest rod locking structure (733) includes a right locking block (7331) and a right guide sleeve (7332). The right locking block (7331) has a right locking block slot (73311) on one side opposite to the transverse push assembly (72). The top of the right locking block slot (73311) is a second limiting groove (73312). The bottom of the right locking block slot (73311) has a second engaging hole (73313) that engages with the transverse push assembly (72). One side of the second limiting groove (73312) has a second claw (73314) and a third engaging hole (73315) that engages with the right headrest rod (6). The third engaging hole (73315)... The bottom of the headrest has a second connecting post (73316), which is connected to one end of the right locking block return spring (7333). The other end of the right locking block return spring (7333) is connected to the right guide sleeve (7332). The right guide sleeve (7332) has a right locking block mounting cavity (73321) in its transverse interior. The right guide sleeve (7332) has a through first right headrest rod mounting hole (73322) in its longitudinal direction. The right guide sleeve (7332) has a second lower limit claw (73323) on its opposite outer walls. The right guide sleeve (7332) is engaged with the headrest frame (4) by the second lower limit claw (73323).

9. A manually operated four-way headrest with music function according to claim 6, characterized in that: The left headrest rod lower sleeve (732) and the right headrest rod lower sleeve (734) have the same structure. The left headrest rod lower sleeve (732) has a second left headrest rod mounting hole (7321) for connecting the left headrest rod (5) in the longitudinal direction. The top of the second left headrest rod mounting hole (7321) is reinforced with a reinforcing plate (7322). The left headrest rod lower sleeve (732) has a third claw (7323) and a fourth locking hole (7324) around its perimeter.

10. A manually operated four-way headrest with music function according to claim 4, characterized in that: The front and rear unlocking assembly (74) includes a latch (741) and a latch return spring (742). The top of the latch (741) passes through the headrest frame (4) and contacts the front and rear sliding plates (3). The back of the latch (741) has a second spring connection hole. One end of the latch return spring (742) is connected to the latch (741) through the second spring connection hole, and the other end of the latch return spring (742) is connected to the headrest frame (4). The bottom of the latch (741) has an unlocking block (7411). The lower surface of the unlocking block (7411) is a downward inclined surface. The latch (741) cooperates with the transverse push assembly (72) through the inclined surface to drive the latch (741) to move longitudinally.

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