Headrest structure of automobile seat

Abstract

The utility model provides a headrest structure of an automobile seat, and belongs to the technical field of automobile seats. The automobile seat headrest solves the problem that in the prior art, an automobile seat headrest is poor in comfort and safety. The headrest structure of the automobile seat comprises a headrest frame, a locking plate is fixedly connected to the headrest frame, a mounting seat used for mounting a headrest and capable of rotating front and back and a first torsional spring used for enabling the mounting seat to rotate and reset are arranged on the headrest frame, a rotatable rotating shaft is arranged on the mounting seat, a plurality of locking grooves are formed in the edge of the locking plate, and the locking plate is fixedly connected with the locking plate. The rotating shaft is fixedly connected with a spring bolt embedded in the locking groove, the spring bolt can swing upwards to be separated from the locking groove, and the rotating shaft is further provided with a second torsional spring used for enabling the spring bolt to swing downwards to be reset. The automobile seat headrest has the advantage that the comfort and the safety of the automobile seat headrest can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile seats and relates to a headrest structure of an automobile seat. Background Art

[0002] Car seats are an important part of the car interior system and occupant restraint system, and headrests are auxiliary devices installed on car seats to improve the comfort and safety of drivers and passengers. At present, the seat headrests of common passenger cars include a headrest body and a pair of fixing pins arranged at the bottom of the headrest body. The fixing pins are provided with a number of limit grooves at intervals along their length direction. A headrest guide sleeve for the fixing pins to be inserted is provided on the back of the car seat, and the headrest guide sleeve can be locked in the limit groove on the headrest rod.

[0003] The existing headrests for automobile seats have the following deficiencies during use: the existing headrests can only be adjusted up and down relative to the automobile seat to adapt to the use height of passengers of different heights, but cannot be adjusted forward and backward relative to the automobile seat. Since the drivers and passengers have differences in not only height, but also body shape and riding habits, the existing headrests cannot be adjusted to a suitable pillow angle for different drivers and passengers. In this way, on the one hand, the cervical vertebrae of the drivers and passengers will not be effectively supported when riding, and the neck will feel tired and sore when riding for a long time. On the other hand, the riding safety of the drivers and passengers cannot be effectively protected. Specifically, in the event of a rear-end collision, the neck of the driver and passenger will bend forward and rebound, just like the reaction when a whip is swung. However, since the distance between the back of the driver and passenger's head and the headrest cannot be adjusted to a suitable distance, the headrest has a poor supporting effect on the driver and passenger's head when hit, thereby greatly reducing the protective effect of the headrest on the driver and passenger's head and cervical vertebra. Summary of the invention

[0004] The purpose of the utility model is to solve the above problems in the existing technology and propose a headrest structure for a car seat. The technical problem to be solved by the utility model is how to improve the comfort and safety of the headrest of the car seat.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A headrest structure for a car seat includes a headrest frame, characterized in that a lock plate is fixedly connected to the headrest frame, a mounting seat is provided for mounting the headrest and can rotate forward and backward, and a torsion spring is used to rotate and reset the mounting seat, a rotatable shaft is provided on the mounting seat, the edge of the lock plate has a plurality of locking grooves, a locking tongue embedded in the locking groove is fixedly connected to the rotating shaft, and the locking tongue can swing upward to disengage from the locking groove, and a torsion spring is also provided on the rotating shaft to make the locking tongue swing downward to reset.

[0007] When in use, a headrest is installed on the mounting seat, and a cable is installed on the unlocking buckle. The cable extends out of the headrest, and the user only needs to control the lock tongue to swing out of the locking groove through the cable to achieve front and rear adjustment of the headrest, and the torsion spring makes the user feel better when turning the headrest, so that the headrest structure of the car seat can adjust the distance between the back of the driver's head and the headrest to a suitable distance when facing drivers and passengers of different body shapes. At the same time, the headrest has a better supporting effect on the driver's head, thereby improving the comfort of the car seat headrest; at the same time, before the headrest angle is adjusted, After the vehicle is in a state of being locked, the torsion spring is convenient for resetting the locking tongue on the one hand, and makes the locking tongue better embedded in the locking groove on the other hand, so that the headrest will not move at will in the event of a rear-end collision or emergency braking, so that the headrest has a better supporting effect on the driver and occupant's head. Under the supporting effect of the headrest, the driver and occupant's head and neck are guaranteed to rebound at the same time, and the headrest bears all the impact force, without causing greater damage to the human neck, thereby making the headrest have a better protective effect on the driver and occupant's head and cervical vertebra, thereby improving the safety of the car seat headrest.

[0008] In the above-mentioned headrest structure of a car seat, the headrest frame includes a headrest cross bar and a headrest guide rod respectively connected to the two ends of the headrest cross bar, the locking plate is fixedly connected to the headrest cross bar, the torsion spring is set on the headrest cross bar, one end of the torsion spring is connected to the locking plate, and the other end is connected to the mounting seat. The headrest guide rod is used to connect with the seat back to achieve the up and down adjustment of the headrest, and the two ends of the torsion spring one set on the headrest cross bar are respectively connected to the locking plate and the mounting seat. When the headrest is rotated forward or backward, the torsion spring one will generate a restoring force, so that the user has resistance when controlling the headrest to rotate forward and backward, the rotation feel is better, and it is also conducive to the rapid reset of the headrest after rotation.

[0009] In the above-mentioned headrest structure of a car seat, the locking plate has a guide groove opened along its circumference, and the two ends of the guide groove are respectively arranged opposite to the inner and outer sides of the locking grooves located at the two ends among the multiple locking grooves, and the mounting seat has a limiting part embedded in the guide groove. Through the cooperation between the guide groove and the limiting part, the trajectory of the mounting seat rotating forward or backward can be controlled, so that the position of the mounting seat rotating forward or backward is more accurate, and the two ends of the guide groove are respectively arranged opposite to the inner and outer sides of the locking grooves located at the two ends among the multiple locking grooves, so that the mounting seat can rotate forward or backward to the maximum angle.

[0010] In the above-mentioned headrest structure of a car seat, the mounting seat is cylindrical and rotatably sleeved on the headrest crossbar, the top of the locking plate is located in the mounting seat, and the groove side walls of the locking grooves located at both ends of the plurality of locking grooves extend out of the mounting seat and can be abutted by the mounting seat. When the headrest is rotated forward or backward to the maximum adjustment angle, the mounting seat can abut against the groove side walls of the locking grooves located at both ends of the plurality of locking grooves to limit the further forward or backward rotation of the headrest.

[0011] In the above-mentioned headrest structure of a car seat, the rotating shaft is located above the headrest cross bar and is arranged perpendicularly thereto, the torsion spring 1, the torsion spring 2 and the locking tongue are all located in the mounting seat, the middle part of the locking tongue is fixedly connected to the rotating shaft, the lower end of the locking tongue has a locking part arranged parallel to the headrest cross bar, the locking part is embedded in the locking groove, the locking part and the limiting part are arranged opposite to each other up and down, and the mounting seat has a clearance hole for the locking part to swing up and down. The above structure makes the headrest structure more compact. By arranging the locking part to be parallel to the headrest cross bar, the locking part can be better embedded in the locking groove to prevent the locking part from falling out by itself; the locking part and the limiting part are arranged relatively to each other up and down, so that the rotation range of the locking part and the mounting seat are consistent, so that the locking part can better cooperate with the guide groove to limit the maximum range of forward or backward rotation of the mounting seat, that is, when the locking tongue reaches the locking grooves at both ends of the plurality of locking grooves, the limiting part also reaches the two ends of the guide groove synchronously, thereby doubly restricting the further forward or backward rotation of the headrest; and the giving hole can allow the locking part to swing up and down on the one hand, and on the other hand, the edge of the giving hole can limit the range of up and down swinging of the locking part.

[0012] In the above-mentioned headrest structure of a car seat, an unlocking buckle for assembling a cable is arranged at the upper end of the locking tongue, and the second torsion spring is sleeved on the rotating shaft, one end of the second torsion spring is connected to the locking tongue, and the other end is connected to the mounting seat. The unlocking buckle can facilitate the assembly of the cable, so as to facilitate the user to control the swing of the locking tongue, and by connecting the two ends of the second torsion spring sleeved on the rotating shaft to the locking tongue and the mounting seat respectively, the second torsion spring can better generate a restoring force after the locking tongue drives the rotating shaft to rotate, so that when the user releases the cable, the locking tongue can be better reset.

[0013] In the above-mentioned headrest structure of a car seat, a bushing is provided at the connection between the mounting seat and the headrest frame. By providing the bushing, the mounting seat can rotate more smoothly relative to the headrest frame.

[0014] In the above-mentioned headrest structure of a car seat, the mounting seat includes a left side plate, a right side plate and a rear side plate, which are sequentially connected to each other and enclosed to form the mounting seat. The mounting seat of the above-mentioned structure can facilitate the disassembly and replacement of parts such as the rotating shaft, the torsion spring 2, the locking tongue, etc., making the headrest structure of the car seat more durable.

[0015] Compared with the prior art, the advantages of the headrest structure of the automobile seat are: the headrest structure of the automobile seat needs to be unlocked by the user to adjust the headrest angle forward or backward. After the adjustment, the headrest is also in a locked state. On the first hand, when facing drivers and passengers of different body shapes, the distance between the back of the driver's head and the headrest can be adjusted to an appropriate distance. At the same time, the headrest has a better supporting effect on the driver's head, thereby improving the comfort of the automobile seat headrest; on the second hand, in the event of a rear-end collision or emergency braking, the headrest will not move at will, so that the headrest has a better supporting effect on the driver's head. Under the supporting action of the headrest, the driver's head and neck are guaranteed to rebound at the same time, and the headrest bears all the impact force, without causing greater damage to the human neck, so that the headrest has a better protective effect on the driver's head and cervical vertebra, thereby improving the safety of the automobile seat headrest. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the car seat headrest structure.

[0017] Figure 2 It is a structural schematic diagram of the side view of the headrest structure of the automobile seat.

[0018] Figure 3 It is an exploded view of the structure of the headrest of the car seat.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the car seat headrest structure after the left side plate and the right side plate are removed.

[0020] Figure 5 It is an exploded view of the mounting base of the headrest structure of the car seat.

[0021] In the figure, 1, headrest frame; 1a, headrest cross bar; 1b, headrest guide rod; 2, lock plate; 2a, locking groove; 2b, guide groove; 3, mounting seat; 3a, limiting part; 3b, clearance hole; 3c, left side plate; 3d, right side plate; 3e, rear side plate; 4, torsion spring 1; 5, rotating shaft; 6, locking tongue; 6a, locking part; 7, torsion spring 2; 8, unlocking buckle; 9, bushing. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] A headrest structure for a car seat, referring to Figure 1-5, including a headrest frame 1, a locking plate 2 is fixedly connected to the headrest frame 1, a mounting seat 3 for mounting a headrest and being rotatable forward and backward, and a torsion spring 4 for rotating and resetting the mounting seat 3, a rotatable rotating shaft 5 is provided on the mounting seat 3, the edge of the locking plate 2 has a plurality of locking grooves 2a, a locking tongue 6 embedded in the locking groove 2a is fixedly connected to the rotating shaft 5, and the locking tongue 6 can swing upward to disengage from the locking groove 2a, and a torsion spring 7 is also provided on the rotating shaft 5 for swinging the locking tongue 6 downward to reset.

[0024] Specifically, the headrest frame 1 includes a headrest cross bar 1a and headrest guide rods 1b respectively connected to the two ends of the headrest cross bar 1a, the lock plate 2 is fixedly connected to the headrest cross bar 1a, the torsion spring 4 is sleeved on the headrest cross bar 1a, one end of the torsion spring 4 is connected to the lock plate 2, and the other end is connected to the mounting seat 3; the mounting seat 3 includes a left side plate 3c, a right side plate 3d and a rear side plate 3e, and the left side plate 3c, the right side plate 3d and the rear side plate 3e are sequentially connected to each other and enclosed to form the mounting seat 3; the rotating shaft 5 is located above the headrest cross bar 1a and is arranged perpendicular to it, and the torsion spring 4 is sleeved on the headrest cross bar 1a, and one end of the torsion spring 4 is connected to the lock plate 2, and the other end of the torsion spring 4 is connected to the mounting seat 3; the mounting seat 3 includes a left side plate 3c, a right side plate 3d and a rear side plate 3e, and the left side plate 3c, the right side plate 3d and the rear side plate 3e are sequentially connected to each other and enclosed to form the mounting seat 3; the rotating shaft 5 is located above the headrest cross bar 1a and is arranged perpendicular to it. The spring 1 4, the torsion spring 2 7 and the lock tongue 6 are all located in the mounting seat 3. The middle part of the lock tongue 6 is fixedly connected to the rotating shaft 5. The lower end of the lock tongue 6 has a locking portion 6a arranged in parallel with the headrest cross bar 1a. The locking portion 6a is embedded in the locking groove 2a. The locking portion 6a and the limiting portion 3a are arranged opposite to each other up and down. The mounting seat 3 has a clearance hole 3b for the locking portion 6a to swing up and down; the upper end of the lock tongue 6 is provided with an unlocking buckle 8 for assembling the cable, the torsion spring 2 7 is sleeved on the rotating shaft 5, one end of the torsion spring 2 7 is connected to the lock tongue 6, and the other end thereof is connected to the mounting seat 3.

[0025] Furthermore, the mounting seat 3 is cylindrical and rotatably mounted on the headrest cross bar 1a, the top of the locking plate 2 is located in the mounting seat 3, and the groove side walls of the locking grooves 2a located at both ends of the multiple locking grooves 2a extend out of the mounting seat 3 and can be used for the mounting seat 3 to abut against; the locking plate 2 has a guide groove 2b opened along its circumference, and the two ends of the guide groove 2b are respectively arranged opposite to the inside and outside of the locking grooves 2a located at both ends of the multiple locking grooves 2a, and the mounting seat 3 has a limiting portion 3a embedded in the guide groove 2b.

[0026] In this embodiment, a bushing 9 is preferably provided at the connection between the mounting seat 3 and the headrest frame 1 .

[0027] The following describes the working principle of the headrest structure of the car seat:

[0028] When in use, a headrest is installed on the mounting seat 3, and a cable is installed on the unlocking buckle 8, which extends out of the headrest. When the angle of the headrest needs to be adjusted forward or backward, the user first pulls the cable, and the connecting end of the lock tongue 6 and the cable (i.e. the upper end of the lock tongue 6) swings downward under the pulling of the cable. Since the middle part of the lock tongue 6 is fixedly connected to the rotating shaft 5, the lock tongue 6 drives the rotating shaft 5 and the torsion spring 2 to rotate clockwise, and the torsion spring 2 7 generates a restoring force for counterclockwise rotation, and the locking part 6a of the lock tongue 6 (i.e. the lower end of the lock tongue 6) swings upward and disengages from the locking groove 2a on the lock plate 2. At this time, the headrest can be rotated forward or backward, because the two ends of the torsion spring 1 4 are respectively connected to the lock plate 2 and the mounting seat 3, so when the headrest is rotated forward, the torsion spring 1 4 will generate a restoring force for rotating backward, and when the headrest is rotated backward, the torsion spring 1 4 will generate a restoring force for rotating forward, so that the user can control the headrest to rotate forward and backward. The headrest is locked at this angle, that is, when the headrest is adjusted forward or backward to a suitable angle, the headrest is in a locked state. If a rear-end collision or emergency braking occurs, the headrest will not move at will, so that the headrest has a better supporting effect on the driver's head. Under the supporting action of the headrest, the driver's head and neck are guaranteed to rebound at the same time, and the headrest bears all the impact force without causing greater damage to the human neck, thereby making the headrest have a better protective effect on the driver's head and cervical vertebra. When the front and rear angles of the headrest need to be adjusted again, the above steps can be repeated.

[0029] In addition, because the top of the locking plate 2 is located in the cylindrical mounting seat 3, the groove side walls of the locking grooves 2a located at both ends of the plurality of locking grooves 2a extend out of the mounting seat 3 and can be abutted against by the mounting seat 3. When the headrest is rotated forward or backward to the maximum adjustment angle, the mounting seat 3 can abut against the groove side walls of the locking grooves 2a located at both ends of the plurality of locking grooves 2a to limit the further forward or backward rotation of the headrest.

[0030] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A headrest structure for a car seat, comprising a headrest frame (1), characterized in that: A lock plate (2) is fixedly connected to the headrest frame (1), a mounting seat (3) for mounting the headrest and capable of rotating forward and backward, and a torsion spring (4) for rotating and resetting the mounting seat (3); a rotatable rotating shaft (5) is arranged on the mounting seat (3); the edge of the lock plate (2) has a plurality of locking grooves (2a); a lock tongue (6) embedded in the locking groove (2a) is fixedly connected to the rotating shaft (5), and the lock tongue (6) can swing upward to disengage from the locking groove (2a); and a torsion spring (7) for swinging the lock tongue (6) downward to resetting is also arranged on the rotating shaft (5).

2. A headrest structure for a car seat according to claim 1, characterized in that: The headrest frame (1) comprises a headrest cross bar (1a) and headrest guide rods (1b) respectively connected to the two ends of the headrest cross bar (1a); the lock plate (2) is fixedly connected to the headrest cross bar (1a); the torsion spring (4) is sleeved on the headrest cross bar (1a); one end of the torsion spring (4) is connected to the lock plate (2) and the other end is connected to the mounting seat (3).

3. The headrest structure of a car seat according to claim 2, characterized in that: The locking plate (2) has a guide groove (2b) opened along its circumference, and the two ends of the guide groove (2b) are respectively arranged opposite to the locking grooves (2a) located at the two ends of the plurality of locking grooves (2a) inside and outside, and the mounting seat (3) has a limiting portion (3a) embedded in the guide groove (2b).

4. The headrest structure of a car seat according to claim 3, characterized in that: The mounting seat (3) is cylindrical and rotatably sleeved on the headrest crossbar (1a); the top of the locking plate (2) is located inside the mounting seat (3); and the side walls of the locking grooves (2a) located at both ends of the plurality of locking grooves (2a) extend outside the mounting seat (3) and can be abutted against by the mounting seat (3).

5. The headrest structure of a car seat according to claim 4, characterized in that: The rotating shaft (5) is located above the headrest cross bar (1a) and is arranged perpendicularly thereto; the torsion spring 1 (4), the torsion spring 2 (7) and the lock tongue (6) are all located in the mounting seat (3); the middle part of the lock tongue (6) is fixedly connected to the rotating shaft (5); the lower end of the lock tongue (6) has a locking portion (6a) arranged parallel to the headrest cross bar (1a); the locking portion (6a) is embedded in the locking groove (2a); the locking portion (6a) and the limiting portion (3a) are arranged opposite to each other in the upper and lower directions; and the mounting seat (3) has a clearance hole (3b) for allowing the locking portion (6a) to swing up and down.

6. The headrest structure of a car seat according to claim 5, characterized in that: The upper end of the lock tongue (6) is provided with an unlocking buckle (8) for assembling a cable, and the second torsion spring (7) is sleeved on the rotating shaft (5), one end of the second torsion spring (7) is connected to the lock tongue (6), and the other end thereof is connected to the mounting seat (3).

7. A headrest structure for a car seat according to any one of claims 1 to 6, characterized in that: A bushing (9) is provided at the connection between the mounting seat (3) and the headrest frame (1).

8. A headrest structure for a vehicle seat according to any one of claims 1 to 6, characterized in that: The mounting seat (3) comprises a left side plate (3c), a right side plate (3d) and a rear side plate (3e), and the left side plate (3c), the right side plate (3d) and the rear side plate (3e) are sequentially connected to each other and enclosed to form the mounting seat (3).

Images