Integral adjusting headrest mechanism

Abstract

The utility model discloses an integral type adjusting headrest mechanism which comprises a headrest framework, a headrest rod is vertically and fixedly arranged in the headrest framework, a connecting piece is movably arranged on the headrest rod in a sleeved mode, and the connecting piece penetrates out of the headrest framework backwards and is fixedly connected with a seat backrest, so that the headrest rod and the headrest framework can move up and down relative to the seat backrest. The connecting piece is provided with a locking mechanism, and the locking mechanism is matched with the connecting piece to achieve movable locking of the headrest rod and the headrest framework. The height of the headrest framework relative to the seat backrest can be adjusted, the headrest framework is suitable for an integrated automobile seat, the seat and the headrest are integrally molded, meanwhile, the occupied space is small, the light and thin effect of the headrest can be achieved, the utilization rate of the space in an automobile is increased, and the cost is reduced. The locking mechanism is matched with the connecting piece to restrain the headrest rod and the headrest framework, so that the headrest is locked at the height required by a passenger, the overall structure is simple, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to an integrated adjustable headrest mechanism. Background Art

[0002] The headrest of a car is mainly used to support the head when riding. Due to the different passengers, it needs to be adjusted according to the passengers to meet the needs of different passengers. For this purpose, a height adjustment structure is provided on the headrest. In the prior art, most of the height adjustment structures of headrests are: a locking groove is provided on the headrest rod, and a locking assembly for achieving locking is provided at the upper end of the seat. Such a locking structure is not suitable for one-piece car seats. In addition, the car seats on the market are becoming thinner and more sporty. The market needs an adjustable headrest with a simple structure and space saving. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the utility model aims to provide an integrated adjustable headrest mechanism, which has a simple structure, is easy to operate, is suitable for one-piece car seats, and can achieve an ultra-thin headrest effect.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes an integrated adjustable headrest mechanism, including a headrest frame, a headrest rod is vertically fixed in the headrest frame, a connecting piece is movablely sleeved on the headrest rod, the connecting piece passes rearwardly through the headrest frame and is fixedly connected to the seat back, so that the headrest rod and the headrest frame can move up and down relative to the seat back, and the connecting piece is equipped with a locking mechanism, which cooperates with the locking mechanism to achieve movement locking of the headrest rod and the headrest frame.

[0005] In the above scheme: a plurality of ratchet grooves are evenly arranged on the connecting piece in the up and down directions, the ratchet groove openings are inclined upward, the locking mechanism includes an unlocking sheet metal and an unlocking button, the unlocking sheet metal is horizontally slidably installed on the headrest frame, a locking portion is provided on the unlocking sheet metal and is laterally clamped in one of the ratchet grooves through the locking portion, a first return spring is further arranged between the unlocking sheet metal and the headrest frame, the first return spring has an elastic force that drives the locking portion of the unlocking sheet metal to be clamped in the ratchet groove, the unlocking button is arranged on the outer side of the headrest frame, passes through the headrest frame and abuts against the unlocking sheet metal, and a first return spring is arranged between the unlocking button and the headrest frame. The second return spring; the unlocking sheet metal can move upward along the inclined surface of the ratchet groove to realize the upward adjustment of the headrest frame relative to the seat back, and at this time the first return spring can always drive the locking portion of the unlocking sheet metal to abut against the ratchet groove and the vertical plane where the ratchet groove is located; when the unlocking button is pressed, the unlocking button can push the unlocking sheet metal to move inward, so that the locking portion disengages from the ratchet groove, so as to realize the movement and unlocking of the headrest rod and the headrest frame, thereby realizing the upward or downward height adjustment of the headrest frame relative to the seat back, and when the unlocking button is released, the locking portion of the unlocking sheet metal can be clamped in the ratchet groove again under the elastic force of the first return spring.

[0006] The headrest can be adjusted upwards without unlocking it. The unlocked sheet metal slides upwards along the inclined surface of the ratchet groove. Every time the headrest slides upward one ratchet groove position, the headrest completes an upward adjustment.

[0007] To adjust the headrest downward, it must be unlocked. By pressing the unlock button, the unlocking sheet metal is pushed inward, causing the locking portion to disengage from the ratchet groove, thereby unlocking the headrest rod and adjusting the headrest downward. After the headrest is adjusted downward, the unlocking sheet metal is reset laterally under the tension of the first return spring, and the headrest rod is locked again, indicating that the headrest has been adjusted downward. Of course, the headrest can also be adjusted upward after unlocking.

[0008] In the above scheme: the headrest frame is formed by fixing and buckling the front cover and the rear cover, which has a simple structure and is easy to assemble.

[0009] In the above scheme: a cavity structure is provided on the front side of the connecting part, the ratchet groove is provided on the side end surface of the cavity structure, a mounting block and a plurality of anti-drop slots are provided on the inner side of the front cover, the mounting block is accommodated in the cavity structure, and the anti-drop slots and the mounting block can guide and limit the unlocking sheet metal.

[0010] In the above scheme: a mounting groove for mounting the unlocking button is provided on the side of the rear cover, and a plurality of positioning ribs for preventing the unlocking button from shaking are provided in the mounting groove.

[0011] In the above scheme: the unlocking button includes a push post, and a through hole is provided in the mounting groove. The push post passes through the through hole and abuts against the unlocking sheet metal, which has a simple structure and is easy to process.

[0012] In the above solution: one end of the first return spring is connected to the unlocking sheet metal, and the other end is connected to the front cover, which has a simple structure and is easy to connect.

[0013] In the above scheme: the connecting piece is provided with a guide cylinder for the headrest rod to pass through, and the side wall of the guide cylinder is provided with two elastic arms, the two elastic arms are arranged at an interval up and down, and wire grooves are provided on both sides of the guide cylinder, and the connecting piece is provided with an I-shaped spring steel wire for adjusting the friction force of the headrest rod sliding up and down through the elastic arms and the grooves, and the left and right sides of the I-shaped spring steel wire are fixed in the wire grooves, and the upper and lower sides of the I-shaped spring steel wire press the elastic arms tightly against the headrest rod, which is beneficial to eliminate the gap between the connecting piece and the headrest rod, and realize the movement of the headrest without shaking and abnormal noise; and by adjusting the clamping force of the I-shaped spring steel wire, the operating force for adjusting the headrest up and down can be changed.

[0014] The beneficial effects of the utility model are as follows: by arranging the headrest rod and the connecting piece in the headrest frame, fixing the headrest rod on the headrest frame, and movably sleeved the connecting piece on the headrest rod and fixedly connected to the seat back, the height adjustment of the headrest frame relative to the seat back can be achieved, and the utility model is suitable for one-piece car seats. While achieving an integrated shape of the seat and the headrest, it occupies less space, can achieve a light and thin effect of the headrest, and improves the utilization rate of the space in the car; the connecting piece is equipped with a locking mechanism, and the locking mechanism cooperates with the connecting piece to realize the constraint of the headrest rod and the headrest frame, so as to lock the headrest at the height required by the occupant, and the overall structure is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the front cover in the utility model.

[0016] Figure 2 It is a schematic diagram of the assembly of the headrest rod and the connecting parts.

[0017] Figure 3 yes Figure 2 Schematic diagram from another angle.

[0018] Figure 4 It is a schematic diagram of the headrest rod and the connecting parts assembled on the front cover.

[0019] Figure 5 It is a structural schematic diagram of the rear cover in the utility model.

[0020] Figure 6 It is a structural schematic diagram of the connecting piece in the utility model.

[0021] Figure 7 It is a structural schematic diagram of the I-shaped spring steel wire in the utility model.

[0022] Figure 8It is a schematic diagram of the assembly of a type I-shaped spring steel wire.

[0023] Fig. 9 yes Figure 8 Cross-sectional view at AA in the middle. DETAILED DESCRIPTION

[0024] like Figure 1 As shown in FIG. 9 , an integrated adjustable headrest mechanism is mainly composed of a headrest frame 1 and a seat back.

[0025] A headrest rod 2 is vertically fixed in the headrest frame 1, and a connecting piece 3 is movably sleeved on the headrest rod 2. The connecting piece 3 passes through the headrest frame 1 rearward and is fixedly connected to the seat back, so that the headrest rod 2 and the headrest frame 1 can move up and down relative to the seat back.

[0026] The connecting piece 3 is equipped with a locking mechanism, and the locking mechanism cooperates with the connecting piece 3 to realize movement locking of the headrest rod 2 and the headrest frame 1 .

[0027] Preferably, a plurality of ratchet grooves 4 are evenly arranged on the connecting member 3 in the vertical direction, and the openings of the ratchet grooves 4 are inclined upward. The locking mechanism includes an unlocking sheet metal 5 and an unlocking button 6. The unlocking sheet metal 5 is horizontally slidably mounted on the headrest frame 1. The unlocking sheet metal 5 is provided with a locking portion 51 and is laterally engaged in one of the ratchet grooves 4 through the locking portion 51. A first return spring 7 is further arranged between the unlocking sheet metal 5 and the headrest frame 1. The first return spring 7 has an elastic force that drives the locking portion 51 of the unlocking sheet metal 5 to engage in the ratchet groove 4.

[0028] The unlocking button 6 is disposed on the outer side of the headrest frame 1 , passes through the headrest frame 1 and abuts against the unlocking sheet metal 5 , and a second return spring 8 is disposed between the unlocking button 6 and the headrest frame 1 .

[0029] The unlocking sheet metal 5 can move upward along the inclined surface of the ratchet groove 4 to achieve upward adjustment of the headrest frame 1 relative to the seat back, and at this time the first return spring 7 can always drive the locking portion 51 of the unlocking sheet metal 5 to abut against the ratchet groove 4 and the vertical plane where the ratchet groove 4 is located.

[0030] When the unlocking button 6 is pressed, the unlocking button 6 can push the unlocking sheet metal 5 to move inward, so that its locking portion 51 disengages from the ratchet groove 4, so as to realize the movement and unlocking of the headrest rod 2 and the headrest frame 1, thereby realizing the upward or downward height adjustment of the headrest frame 1 relative to the seat back. When the unlocking button 6 is released, the locking portion 51 of the unlocking sheet metal 5 can be clamped in the ratchet groove 4 again under the elastic force of the first return spring 7.

[0031] That is, the headrest can be adjusted upward without unlocking. The unlocked sheet metal 5 slides upward along the inclined surface of the ratchet groove 4. Every time the ratchet groove 4 is slid upward, the headrest completes an upward adjustment.

[0032] To adjust the headrest downward, it must be unlocked. By pressing the unlocking button 6, the unlocking sheet metal 5 is pushed inward, so that the locking portion 51 disengages from the ratchet groove 4, thereby unlocking the headrest rod 2 and adjusting the headrest downward. After the headrest is adjusted downward, under the pulling force of the first return spring 7, the unlocking sheet metal 5 is reset horizontally and the headrest rod 2 is locked again, that is, the headrest is adjusted downward. Of course, the headrest can also be adjusted upward after unlocking.

[0033] Preferably, the headrest frame 1 is formed by fixing and buckling the front cover 9 and the rear cover 10, which has a simple structure and is easy to assemble.

[0034] Preferably, a cavity structure 31 is provided on the front side of the connecting member 3, the ratchet groove 4 is provided on the side end surface of the cavity structure 31, a mounting block 91 and a plurality of anti-drop grooves 92 are provided on the inner side of the front cover 9, the mounting block 91 is accommodated in the cavity structure 31, and the anti-drop grooves 92 and the mounting block 91 can guide and limit the unlocking sheet metal 5.

[0035] Preferably, a mounting groove 101 for mounting the unlocking button 6 is provided on the side of the rear cover 10 , and a plurality of positioning ribs are provided in the mounting groove 101 to prevent the unlocking button 6 from shaking.

[0036] Preferably, the unlocking button 6 includes a push post 61 , and a through hole is provided in the mounting groove 101 . The push post 61 passes through the through hole and abuts against the unlocking sheet metal 5 , which has a simple structure and is easy to process.

[0037] Preferably, one end of the first return spring 7 is connected to the unlocking sheet metal 5, and the other end is connected to the front cover 9, which has a simple structure and is easy to connect.

[0038] Preferably, the connecting member 3 is provided with a guide cylinder for the headrest rod 2 to pass through, and two elastic arms 32 are provided on the side wall of the guide cylinder. The two elastic arms 32 are spaced apart up and down, and wire grooves 33 are provided on both sides of the guide cylinder. The connecting member 3 is provided with an I-shaped spring steel wire 11 for adjusting the friction force of the headrest rod 2 sliding up and down through the elastic arms 32 and the grooves 33. The I-shaped spring steel wire 11 is fixed in the wire grooves 33 on the left and right sides, and the upper and lower sides of the I-shaped spring steel wire 11 press the elastic arms 32 tightly against the headrest rod 2, which is conducive to eliminating the gap between the connecting member 3 and the headrest rod 2 and realizing the movement of the headrest without shaking and abnormal noise; and by adjusting the clamping force of the I-shaped spring steel wire 11, the operating force for adjusting the headrest up and down can be changed.

Claims

1. An integrated adjustable headrest mechanism, comprising a headrest frame (1), characterized in that: A headrest rod (2) is vertically fixed inside the headrest frame (1), a connecting piece (3) is movably sleeved on the headrest rod (2), the connecting piece (3) passes through the headrest frame (1) backwards and is fixedly connected to the seat back, so that the headrest rod (2) and the headrest frame (1) can move up and down relative to the seat back, and the connecting piece (3) is equipped with a locking mechanism, and the locking mechanism cooperates with the connecting piece (3) to realize the movement locking of the headrest rod (2) and the headrest frame (1); The connecting member (3) is evenly provided with a plurality of ratchet grooves (4) in the vertical direction, and the ratchet grooves (4) are opened in an inclined manner upward. The locking mechanism comprises an unlocking sheet metal (5) and an unlocking button (6). The unlocking sheet metal (5) is horizontally slidably mounted on the headrest frame (1). The unlocking sheet metal (5) is provided with a locking portion (51) and is laterally engaged in one of the ratchet grooves (4) through the locking portion (51). A first return spring (7) is further provided between the unlocking sheet metal (5) and the headrest frame (1). The first return spring (7) has an elastic force that drives the locking portion (51) of the unlocking sheet metal (5) to engage in the ratchet groove (4). The unlocking button (6) is provided on the outer side of the headrest frame (1), passes through the headrest frame (1) and abuts against the unlocking sheet metal (5). A locking spring (51) is provided between the unlocking button (6) and the headrest frame (1). The second return spring (8); the unlocking sheet metal (5) can move upward along the inclined surface of the ratchet groove (4) to achieve upward adjustment of the headrest frame (1) relative to the seat back, and at this time the first return spring (7) can always drive the locking portion (51) of the unlocking sheet metal (5) to abut against the ratchet groove (4) and the vertical plane where the ratchet groove (4) is located; when the unlocking button (6) is pressed, the unlocking button (6) can push the unlocking sheet metal (5) to move inward, so that its locking portion (51) escapes from the ratchet groove (4), so as to achieve the movement and unlocking of the headrest rod (2) and the headrest frame (1), thereby achieving the upward or downward height adjustment of the headrest frame (1) relative to the seat back, and when the unlocking button (6) is released, the locking portion (51) of the unlocking sheet metal (5) can be clamped in the ratchet groove (4) again under the elastic force of the first return spring (7).

2. The integrated adjustable headrest mechanism according to claim 1, characterized in that: The headrest frame (1) is formed by a front cover (9) and a rear cover (10) being fixedly buckled together.

3. The integrated adjustable headrest mechanism according to claim 2, characterized in that: The front side of the connecting member (3) is provided with a cavity structure (31), the ratchet groove (4) is provided on the side end surface of the cavity structure (31), the inner side of the front cover (9) is provided with a mounting block (91) and a plurality of anti-dropping slots (92), the mounting block (91) is accommodated in the cavity structure (31), and the anti-dropping slots (92) and the mounting block (91) can guide and limit the unlocking sheet metal (5).

4. The integrated adjustable headrest mechanism according to claim 2, characterized in that: A mounting groove (101) for mounting an unlocking button (6) is provided on the side of the rear cover (10), and a plurality of positioning ribs for preventing the unlocking button (6) from shaking are provided in the mounting groove (101).

5. The integrated adjustable headrest mechanism according to claim 4, characterized in that: The unlocking button (6) comprises a push post (61), a through hole is provided in the mounting groove (101), and the push post (61) passes through the through hole and abuts against the unlocking sheet metal (5).

6. The integrated adjustable headrest mechanism according to claim 2, characterized in that: One end of the first return spring (7) is connected to the unlocking sheet metal (5), and the other end is connected to the front cover (9).

7. The integrated adjustable headrest mechanism according to claim 1, characterized in that: The connecting member (3) is provided with a guide cylinder for the headrest rod (2) to pass through, and the side wall of the guide cylinder is provided with two elastic arms (32), which are arranged at intervals up and down, and steel wire clamping grooves (33) are provided on both sides of the guide cylinder. The connecting member (3) is provided with a "J"-shaped spring steel wire (11) for adjusting the friction force of the headrest rod (2) sliding up and down through the elastic arms (32) and the clamping grooves (33). The left and right sides of the "J"-shaped spring steel wire (11) are clamped in the steel wire clamping grooves (33) for fixing, and the upper and lower sides of the "J"-shaped spring steel wire (11) press the elastic arms (32) tightly against the headrest rod (2).

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