阅读说明：本技术 汽车座椅用头枕的前后位置调节装置 (Front-rear position adjusting device of headrest for automobile seat ) 是由 姜显锡 于 2020-01-21 设计创作，主要内容包括：本发明涉及汽车座椅用头枕的前后位置调节装置,构成为乘客可以按照自己的体型或姿势向前方或后方调节头枕的位置,从而不仅能够以舒适的状态驾驶汽车,而且当发生追尾事故时可以将对颈椎的伤害最小化。(The present invention relates to a front and rear position adjusting apparatus of a headrest for a car seat, which is configured such that a passenger can adjust the position of the headrest forward or backward according to his or her body shape or posture, thereby not only enabling a comfortable driving of a car, but also minimizing damage to the cervical vertebrae when a rear-end collision occurs.)

1. A front-rear position adjusting device of a headrest for a vehicle seat, which is configured to move the headrest forward and backward by a moving member (71) of the headrest for a vehicle seat,

the lower shell (21) is in a box shape with the upper side and the right side opened, a push rod (31), a left side slide block (41) and a right side slide block (61) are arranged in the lower shell,

a pushed protrusion (32) which is abutted with the right side end of the left side slide block (41) is formed on the upper surface of the push rod (31), a pressing piece (34) which is protruded towards the right side of the lower shell (21) and enables the push rod (31) to move towards the left side is arranged at the right side end of the push rod (31),

a coupling post 44 is provided on the upper surface of the left side of the left slider 41, a coupling groove 45 to be engaged with a coupling projection 72 on the left side surface of the moving member 71 is formed on the coupling post 44, a rotation shaft long hole 42 and a lower long hole 43 are formed on the right side of the left slider 41 to be overlapped with the right slider 61, the rotation shaft long hole 42 is formed so that a rotation plate shaft 52 of the rotation plate 51 inserted between the left slider 41 and the right slider 61 is sandwiched therebetween, the lower long hole 43 is formed so that the lower projection 53 of the rotation plate 51 is sandwiched therebetween by the left and right movement of the left slider 41, and the rotation plate 51 can be rotated around the rotation plate shaft 52,

a coupling post 44 is provided on the right upper surface of the right slider 61, a coupling groove 45 is formed on the coupling post 44 to be engaged with a coupling protrusion 72 of the right side surface of the moving member 71, an upper long hole 63 is formed on the left side of the right slider 61 overlapping with the left slider 41, the upper long hole 63 sandwiches an upper protrusion 54 formed on the rotating plate 51,

in the rotating plate (51), a rotating plate shaft (52) formed at the center of the lower side is clamped in a rotating shaft long hole (42) of a left side slide block (41), a lower side projection (53) formed at the front of the lower side is clamped in a lower side long hole (43) of the left side slide block (41), an upper side projection (54) formed at the rear of the upper side is clamped in an upper side long hole (63) of a right side slide block (61),

the springs (46) are respectively arranged on the left side surface of the left side slide block (41) and the right side surface of the right side slide block (61),

a moving passage 13 is formed in the upper case 11, a moving member 71 is inserted into the moving passage 13 to move forward and backward, a cover 16 connected to the lower case 21 to cover the lower case 21 is provided at the lower end of the upper case 11,

a plurality of coupling protrusions 72 are formed on the left and right surfaces of the moving member 71, the coupling protrusions 72 engage or disengage coupling grooves 45 provided in coupling posts 44 of the left slider 41 and the right slider 61,

when the pressing member (34) is pressed, the left slider (41) and the right slider (61) are separated and the coupling groove (45) engaged with the coupling protrusion (72) is disengaged, so that the moving member (71) moves back and forth, and when the pressing member (34) is released, the left slider (41) and the right slider (61) approach and the coupling groove (45) is engaged with the coupling protrusion (72), so that the moving member (71) is fixed.

2. The forward-backward position adjustment device of a headrest for vehicle seats according to claim 1,

a plate spring (14) is provided at the center of the upper side of the moving passage (13) of the upper case (11), and a curved hooking bent plate (15) is formed at the tip of the plate spring (14),

a hooking groove (73) formed in the center of the upper surface of the moving member (71) is formed to sequentially hook the bent plate (15) at a position where the coupling groove (45) is engaged with the coupling protrusion (72),

when the moving member (71) moves back and forth, a coupling sound and a coupling vibration are generated at a position where the coupling grooves (45) are engaged.

Technical Field

The present invention relates to a front and rear position adjusting device of a headrest installed in a car seat, which is configured to allow a passenger to adjust the position of the headrest forward or backward according to his or her body shape or posture, thereby not only allowing the car to be driven in a comfortable state, but also minimizing damage to the cervical vertebrae when a rear-end collision occurs.

Background

A height-adjustable headrest is arranged on the upper part of a backrest of a seat installed in an automobile, and supports the back head of a passenger sitting on the seat to provide comfortable riding feeling, so that the situation that the head of the passenger tilts backwards to hurt the cervical vertebra when a rear-end collision happens is prevented.

In the conventional headrest such as korean patent No. 1108273, a back rest of a seat and the headrest are coupled by a holder (stay)12, and the holder 12 moves up and down, so that the height of the headrest can be adjusted according to the size of a passenger.

However, in the conventional headrest, when a passenger drives in a posture in which the backrest of the seat is tilted backward or a posture in which the head is extended forward, the headrest and the rear head are excessively separated, and the rear head cannot be sufficiently supported by the headrest, thereby increasing the fatigue feeling of the passenger, and there is a problem that the head is tilted backward to injure the cervical vertebrae when a rear-end accident occurs.

Disclosure of Invention

Technical problem to be solved by the invention

The present invention is configured to move the position of a headrest forward and backward so as to support the back head according to the body shape or posture of a passenger, thereby providing a comfortable riding feeling to the passenger, reducing driving fatigue, and minimizing damage to the cervical vertebrae when a rear-end collision occurs.

Means for solving the problems

The present invention has been made to solve the above-mentioned problems, and provides a front-rear position adjusting device of a headrest for an automobile seat, which is configured to move a headrest forward and backward by a moving member (71) of the headrest for an automobile seat, characterized in that a lower case (21) has a box shape with open upper and right sides, and a push rod (31), a left slider (41), and a right slider (61) are provided inside the lower case, a pushed protrusion (32) abutting against a right end of the left slider (41) is formed on an upper surface of the push rod (31), a pressing member (34) protruding toward the right side of the lower case (21) to move the push rod (31) to the left side is provided on the right end of the push rod (31), a coupling post (44) is provided on a left upper surface of the left slider (41), a coupling groove (45) engaging with a coupling protrusion (72) on a left side surface of the moving member (71) is formed on the coupling post (44), a rotation shaft long hole (42) and a lower long hole (43) are formed at the right side of the left slider (41) overlapped with the right slider (61), the rotation shaft long hole (42) is formed to sandwich the rotation plate shaft (52) of the rotation plate (51) inserted between the left slider (41) and the right slider (61), the lower long hole (43) sandwiches the lower protrusion (53) of the rotation plate (51) to pass the left and right movement of the left slider (41), the rotation plate (51) can rotate around the rotation plate shaft (52), a coupling column (44) is provided at the right upper surface of the right slider (61), a coupling groove (45) is formed at the coupling column (44) to be engaged with the coupling protrusion (72) of the right side surface of the moving member (71), an upper long hole (63) is formed at the left side of the right slider (61) overlapped with the left slider (41), wherein the upper slot (63) sandwiches an upper protrusion (54) formed on the rotating plate (51), in the rotating plate (51), a rotating plate shaft (52) formed at the center of the lower side sandwiches a rotating shaft slot (42) of the left slider (41), a lower protrusion (53) formed at the front of the lower side sandwiches a lower slot (43) of the left slider (41), an upper protrusion (54) formed at the rear of the upper side sandwiches an upper slot (63) of the right slider (61), springs (46) are respectively provided on the left side surface of the left slider (41) and the right side surface of the right slider (61), a moving passage (13) is formed on the upper case (11), a moving member (71) is inserted into the moving passage (13) to move forward and backward, a cover (16) that covers the lower case (21) and is connected to the lower case (21) is provided at the lower end of the upper case (11), a plurality of coupling protrusions 72 are formed on the left and right surfaces of the moving member 71, the coupling protrusions 72 allow coupling grooves 45 of coupling posts 44 provided on the left slider 41 and the right slider 61 to be engaged with or disengaged from them, when the pressing member 34 is pressed, the left slider 41 and the right slider 61 are separated from each other, the coupling grooves 45 engaged with the coupling protrusions 72 are disengaged, and the moving member 71 moves forward and backward, and when the pressing member 34 is released, the left slider 41 and the right slider 61 approach each other, and the coupling grooves 45 are engaged with the coupling protrusions 72, and the moving member 71 is fixed.

And, a plate spring 14 is provided at the upper center of the moving passage 13 of the upper case 11, and a curved hooking curved plate 15 is formed at the end of the plate spring 14, and a hooking groove 73 formed at the center of the upper surface of the moving member 71 is formed to sequentially hook the hooking curved plate 15 at a position where the coupling groove 45 is engaged with the coupling protrusion 72, and when the moving member 71 moves forward and backward, a coupling sound and a coupling vibration are generated at a position where the coupling groove 45 is engaged.

Effects of the invention

The invention can adjust the front and back position of the headrest according to the body shape or posture of the passenger by simple operation, thereby providing comfortable riding feeling for the passenger, reducing driving fatigue and realizing the effect of minimizing the injury to the cervical vertebra when rear-end collision happens.

Drawings

Fig. 1 is a representative cross-sectional view of the present invention.

Fig. 2 is a perspective sectional view showing the structure of the main part of the present invention.

Fig. 3 is a perspective view showing the structure of the main part of the present invention.

Fig. 4 is an exploded perspective view showing the structure of the main part of fig. 3.

Fig. 5 is a side sectional view showing an unnecessary part of the state where the plate spring is engaged with or disengaged from the hooking groove according to the movement of the moving member of the present invention.

Fig. 6a and 6b are plan views showing a main part of the process of moving the moving member forward and backward in the present invention.

Fig. 7 is a perspective sectional view showing a state in which the moving member of fig. 2 moves forward.

Description of the marks

11: upper shell

12: holding member

13: moving channel

14: plate spring

15: hanging bending plate

16: cover

21: lower casing

22: casing through hole

31: push rod

32: is pushed to protrude

33: push rod through slot hole

34: pressing piece

41: left side slide block

42: slot hole of rotary shaft

43: lower slot hole

44: connecting column

45: connecting groove

46: spring

51: rotary plate

52: rotating plate shaft

53: lower side projection

54: upper side projection

61: right slide block

63: upper long hole

71: moving part

72: coupling projection

73: hanging groove

80: cushion part

Detailed Description

The detailed structure of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 to 4 show the main structure of the present invention, and as shown in the drawings, the headrest of the present invention is provided with an upper case 11 and a lower case 21 corresponding to a body in general, both ends of a retainer 12 fixed to the upper case 11 are passed through case through holes 22 formed in the lower case 21, and then are connected to a backrest (not shown) of a seat to be fixed, and a cushion member 80 supporting a rear head is formed around the upper case 11 and the lower case 21.

First, the structure of the lower case 21 will be described, in which the lower case 21 has a box shape with an open upper side and a right side, the case through-hole 22 through which the holder 12 passes is formed on the left side and the right side, the push rod 31, the left slider 41, and the right slider 61 are provided in the inner space, the rotating plate 51 is provided in the space between the left slider 41 and the right slider 61, and the upper end of the lower case 21 is covered with the cover 16 formed at the lower portion of the upper case 11, thereby coupling the upper case 11 and the lower case 21.

The push rod 31 has a flat rod shape configured to be movable in the left-right direction in the lower case 21, and has long rod insertion holes 33 formed in the left and right sides in an oblong shape so that the push rod 31 can move in the left-right direction in a state where the holder 12 is inserted, and a pushed protrusion 32 is formed on the upper surface so as to abut on the right end of the left slider 41, and a presser 34 protruding toward the right side of the lower case 21 is provided on the right end, so that when the presser 34 is pressed in the left side, the push rod 31 moves in the left side and the left slider 41 abutting on the pushed protrusion 32 moves in the left side.

In the upper portion of the push rod 31, a left slider 41 and a right slider 61 are inserted into the lower case 21, the left slider 41 has a box shape with an upper side and a right side opened, a portion of the right side of the left slider 41 is inserted into the right slider 61, and in order to provide the rotating plate 51 in a space between the left slider 41 and the right slider 61, the edge of the right side of the left slider 41 is formed to be low in height and narrow in width, so that the left slider 41 and the right slider 61 approach or separate from each other in a state where the portion of the right side of the left slider 41 and the portion of the left side of the right slider 61 overlap each other.

Further, a coupling post 44 is provided on the upper left surface of the left slider 41, a coupling groove 45 to be engaged with a coupling protrusion 72 formed on the left surface of the moving member 71 is formed on the coupling post 44, and a rotation shaft long hole 42 and a lower long hole 43 are formed on the right side overlapping the right slider 61, the rotation shaft long hole 42 is formed such that the rotation plate shaft 52 of the rotation plate 51 inserted between the left slider 41 and the right slider 61 is inserted into the rotation shaft long hole 42, and the lower protrusion 53 of the rotation plate shaft 52 is inserted into the lower long hole 43 so that the rotation plate 51 can rotate around the rotation plate shaft 52 by the left and right movement of the left slider 41.

The right slider 61 has a box shape with a lower side and a left side opened, a coupling post 44 is provided on a right upper surface, a coupling groove 45 engaged with a coupling protrusion 72 formed on a right side surface of a moving member 71 is formed on the coupling post 44, an upper long hole 63 is formed on a left side overlapped with the left slider 41, an upper protrusion 54 of the rotating plate 51 inserted between the left slider 41 and the right slider 61 is caught in the upper long hole 63, and the right slider 61 is moved to the right side by the rotation of the rotating plate shaft 52.

The springs 46 are respectively provided on the left side surface of the left slider 41 and the right side surface of the right slider 61, and elastically support the left slider 41 and the right slider 61 so that the left slider 41 and the right slider 61 can move close to each other.

The rotating plate 51 is provided between spaces where the left slider 41 and the right slider 61 overlap each other, and is configured such that the left slider 41 and the right slider 61 approach or separate from each other by the left and right movement of the left slider 41, the rotating plate shaft 52 of the rotating plate 51 formed at the lower center thereof is sandwiched between the rotating shaft long holes 42 of the left slider 41, the lower protrusion 53 formed at the lower front thereof is sandwiched between the lower long holes 43 of the left slider 41, and the upper protrusion 54 formed at the upper rear thereof is sandwiched between the upper long holes 63 of the right slider 61.

The upper case 11 is provided with a moving passage 13 penetrating forward and backward, a moving member 71 inserted into the moving passage 13 and moving forward and backward, and a cover 16 covering the lower case 21 and connected to the lower case 21, and a plurality of coupling protrusions 72 are provided on the left and right surfaces of the moving member 71 at regular intervals so as to engage or disengage the coupling grooves 45 of the coupling posts 44 provided on the left slider 41 and the right slider 61.

The plate spring 14 is provided at the center of the upper side of the moving passage 13 of the upper case 11, and a bent hooking bent plate 15 is formed at the end of the plate spring 14, and when the moving member 71 moves forward and backward, the bent hooking bent plate 15 is sequentially hooked to the hooking groove 73 of the moving member 71 or sequentially released.

The dumbbell-shaped moving member 71 is inserted into and fixed to the moving path 13 or moves forward and backward, and has a plurality of coupling protrusions 72 engaged with the coupling grooves 45 on the left and right surfaces at a predetermined interval, and has the same number of catching grooves 73 as the coupling protrusions 72 on the upper surface at the same interval as the coupling protrusions 72.

The coupling protrusion 72 is configured such that the coupling groove 45 of the coupling post 44 is engaged with the coupling protrusion 72 and the moving member 71 is fixed when the left and right sliders 41 and 61 approach each other, and the coupling groove 45 of the coupling post 44 engaged with the coupling protrusion 72 is disengaged when the left and right sliders 41 and 61 are separated from each other, so that the moving member 71 moves forward and backward.

The hooking groove 73 is formed curved at the center of the upper surface of the upper housing 11, and is formed such that the hooking bent plate 15 of the plate spring 14 is hooked to the hooking groove 73 at a position where the coupling groove 45 of the coupling post 44 is engaged with the coupling protrusion 72 provided at the moving member 71.

Therefore, as shown in fig. 5, when the movable member 71 moves forward and backward, the hooking curved plate 15 of the plate spring 14 is sequentially engaged with and disengaged from the hooking groove 73, and when the hooking curved plate 15 of the plate spring 14 is inserted into and hooked in the hooking groove 73, the position of the movable member 71 is temporarily fixed while generating a hooking sound and a hooking vibration by the elastic force of the plate spring 14, so that the passenger can grasp the degree of movement of the headrest by the sound and the vibration, and the engagement between the coupling protrusion 72 and the coupling groove 45 is realized at a correct position.

The embodiment of the present invention having the above-described structure will be described in detail with reference to fig. 6a and 6 b.

Fig. 6a is a view showing a fixed state of the moving member 71 of the present invention, the left slider 41 and the right slider 61 are approached by the elasticity of the spring 46, the coupling groove 45 of the coupling post 44 is engaged with the coupling protrusion 72 of the moving member 71, and the moving member 71 is fixed, thereby stably supporting the back head of the passenger.

Fig. 6b is a diagram showing a moving state of the moving member 71 according to the present invention, in which when the push rod 31 is moved leftward by pressing the pressing member 34, the left slider 41 abutting against the right end of the pushed protrusion 32 of the push rod 31 is moved leftward together with the push rod 31 against the elasticity of the spring 46, and at this time, the lower protrusion 53 inserted into the lower long hole 43 of the left slider 41 is rotated clockwise, so that the rotating plate 51 is moved rightward in the axial direction of the rotating shaft long hole 42, and is rotated clockwise, and the upper protrusion 54 inserted into the upper long hole 63 of the right slider 61 is rotated clockwise by the rotation of the rotating plate 51, and the right slider 61 is pushed rightward and moved against the elasticity of the spring 46.

Therefore, when the distance between the left slider 41 and the right slider 61 is increased and the coupling groove 45 of the coupling post 44 engaged with the coupling protrusion 72 of the moving member 71 is disengaged, the fixing of the moving member 71 is released, the moving member 71 can be moved forward and backward, and when the moving member 71 moves, the hooking curved plate 15 is sequentially engaged with or sequentially disengaged from the hooking groove 73 of the moving member 71 and simultaneously generates hooking sound and hooking vibration, and the position of the moving member 71 is temporarily fixed, so that the passenger can grasp the moving degree of the moving member 71 in stages.

When the pushing state of the pushing member 34 is released after the moving member 71 is moved to an appropriate position, the left slider 41 and the right slider 61 are moved closer to each other by the elasticity of the spring 46, the coupling groove 45 of the coupling post 44 is engaged with the coupling protrusion 72 of the moving member 71, the moving member 71 is fixed, the lower protrusion 53 inserted into the lower long hole 43 of the left slider 41 is rotated counterclockwise, the upper protrusion 54 inserted into the upper long hole 63 of the right slider 61 is also rotated counterclockwise, the rotating plate 51 is moved to the original position, that is, to the right side, and is rotated counterclockwise, and the push rod 31 is also moved to the original position, that is, to the right side by the pushed protrusion 32 abutting against the right side surface of the left slider 41.

Therefore, according to the present invention, the fixing of the movable member 71 can be released by pressing the pressing member 34, and the fixing of the movable member 71 can be released by releasing the pressing of the pressing member 34, so that the position of the headrest can be positioned rearward as shown in fig. 2, or forward as shown in fig. 7, and the position of the headrest can be adjusted easily and quickly.

In particular, as shown in fig. 3 and 4, the coupling projection 72 of the moving member 71 of the present invention is formed as an inclined surface on the front side of the planar shape, and the rear side is formed as a wall surface perpendicular to the moving direction of the moving member 71, so that the movement of the rear side of the moving member 71 is restricted while the movement of the front side is allowed in a state where the coupling projection 72 is engaged in the coupling groove 45 of the coupling post 44.

Therefore, when a front collision of the automobile occurs, the moving member 71 automatically moves forward by inertia and minimizes injury to the occupant, thereby preventing injury during the front collision as well as preventing injury during a rear collision, which is a main function of a general automobile headrest.

That is, in the case of a frontal collision accident, the passenger's body rapidly leans forward by inertia and then rapidly returns to the rear again by its own elasticity and the rebounding force after collision, and the cervical vertebrae portion is rapidly deformed and seriously injured when returning according to the conventional headrest, but according to the present invention, the passenger's upper body is returned in a state where the headrest including the cushion member 80 connected to the moving member 71 is automatically moved forward, and the body deformation when returning can be minimized, thereby preventing serious injury.

On the other hand, according to the headrest to which the present invention is applied, not only the passenger injury preventing effect at the time of a front collision accident as described above can be obtained, even when it can be considered that a rear-end collision occurs due to the original function of the headrest, the effect of preventing injury, which is more improved than the conventional one, can be obtained, and this is also the effect by the relatively free forward-side moving function of the moving member 71, when a rear-end collision occurs, the head and the cervical spine of the passenger are firmly supported by the headrest including the cushion member 80 whose rearward movement is restricted, in a situation where the automobile itself moves forward abruptly due to a rear-end collision, the body of the passenger moves in a manner similar to that of a front-end collision, when the vehicle body moves forward and stops, the headrest including the moving member 71 moves forward by inertia, and the head and the cervical spine of the passenger can be firmly supported again.