CN213138558U

CN213138558U - Headrest adjusting mechanism

Info

Publication number: CN213138558U
Application number: CN202021315523.2U
Authority: CN
Inventors: 蒙祖胜
Original assignee: Ningbo Yitong Technology Co ltd
Current assignee: Ningbo Yitong Technology Co ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-05-07
Anticipated expiration: 2030-07-07

Abstract

The utility model discloses a head rest adjustment mechanism, including the head rest, backup plate and back, the head rest can be removed and the locking with the relative back of backup plate together, the back is equipped with first fixed block and spacing portion, it has the stroke control piece to articulate on the first fixed block, first fixed block and backup plate fixed connection, the stroke control piece is kept away from when first fixed block one end is located first fixed block top, the head rest drives the stroke control piece after the take-up height of rebound, stroke control piece and spacing portion butt, rotate the stroke control piece downwards, when making the stroke control piece keep away from first fixed block one end and being located first fixed block below, the relative back of head rest after the take-up height of moving, first fixed block and spacing portion butt. Through the setting of stroke control piece, make this head rest adjustment mechanism have two not adjustment range of co-altitude, according to children's developmental state, select the adjustment range of corresponding height earlier, then select the gear that corresponds in this adjustment range, make the regulation of head rest more convenient.

Description

Headrest adjusting mechanism

Technical Field

The utility model relates to a car children safety seat, especially a children safety seat's head rest adjustment mechanism.

Background

At present, a common child safety seat mainly comprises a backrest and a base, wherein a headrest is arranged on the backrest, the base is fixedly connected with an automobile, and the backrest and the headrest support the back and the head respectively. As the child grows faster in the development period, the child safety seats with larger specifications and models must be frequently replaced to meet the use requirements, so that some child safety seats with headrest adjustable appear on the market, a lifting mechanism is arranged between the headrest and the backrest of the child safety seat, for example, the lifting mechanism of the child safety seat with the publication number of CN203358393U, a vertical containing groove is arranged on the back surface of the headrest, a lifting adjusting mechanism is arranged in the vertical containing groove, the lifting adjusting mechanism is limited in the containing groove through a cover plate, the lifting adjusting mechanism on one hand plays a role in adjusting the height of the headrest and simultaneously connecting the headrest and the backrest, the structure is more complex, the installation is inconvenient, the current lifting adjusting mechanism only adjusts through a gear groove, and the child with different sizes is not obviously distinguished in height adjustment, the gear adjustment is very inconvenient.

Disclosure of Invention

In order to solve the defects of the prior art, the utility model aims to provide a headrest adjusting mechanism with convenient adjustment.

In order to achieve the purpose, the utility model provides a headrest adjusting mechanism, including headrest, backup plate and back, headrest and backup plate can be relative the back reciprocates and locks together, the back is equipped with first fixed block and spacing portion, it has the stroke control piece to articulate on the first fixed block, the first fixed block passes back and backup plate fixed connection, stroke control piece, first fixed block and backup plate are relative the back reciprocates together, when the stroke control piece is kept away from first fixed block one end and is located the first fixed block top, headrest and backup plate drive stroke control piece relative the back moves a take the altitude upwards after, the stroke control piece with spacing butt joint rotates down the stroke control piece, makes when the stroke control piece is kept away from first fixed block one end and is located the first fixed block below, the headrest and the backup plate drive the stroke adjusting block to move upwards by a certain height relative to the backrest, and then the first fixing block is abutted to the limiting part.

Furthermore, a connecting rod is arranged at one end, far away from the first fixed block, of the stroke adjusting block, and when the connecting rod is located above the first fixed block, the connecting rod corresponds to the pair of safety belt through holes in the backup plate.

Furthermore, the back of the backrest is provided with a groove, the first fixing block and the stroke adjusting block are slidably arranged in the groove, and the limiting part is an upper side wall of the groove corresponding to the first fixing block.

Furthermore, draw straps are arranged between the headrest and the backrest and between the backup plate and the backrest, and the draw straps can drive the headrest and the backup plate to move up and down and lock relative to the backrest.

Further, the back of the headrest and the back of the backup plate is provided with an inverted T-shaped groove, the drawstring is in the inverted T-shaped groove, the drawstring is slidably arranged in the inverted T-shaped groove, the drawstring is opposite to the backup plate, the backup plate moves upwards for a certain height and then drives the headrest and the backup plate to move upwards together with the backrest.

Further, be equipped with the through-hole on the back, be equipped with the stand of vertical setting in the through-hole, the stand lid is located on the type groove of falling T, the stand both ends all are equipped with a plurality of locked grooves, wear to be equipped with a pair of lock post on backup plate and the stretching strap, the lock post with locked groove looks adaptation, the lock post is transversely gone into or is transversely broken away from at the reciprocating in-process horizontal card of the relative backup plate of stretching strap the locked groove.

Furthermore, a pair of transverse through holes is formed in the backup plate, a pair of guide holes is formed in the pull belt, and the lock cylinder penetrates through the transverse through holes and the guide holes.

Further, the guiding hole includes perpendicular hole and inclined hole, perpendicular hole is linked together with the inclined hole, the inclined hole is from perpendicular hole downwardly extending formation, interval between the guiding hole is close to perpendicular hole one end from the inclined hole and is kept away from perpendicular hole one end and crescent to the inclined hole.

Compared with the prior art, the beneficial effects of the utility model are that: through the articulated of stroke control piece and first fixed block, when first fixed block one end was located first fixed block top was kept away from to the stroke control piece, the headrest can remove certain height with the relative back of backup plate, the stroke control piece rotates downwards, when making the stroke control piece keep away from first fixed block one end and being located first fixed block below, the headrest can the high increase of removal with the relative back of backup plate, make this headrest adjustment mechanism have the control range of two co-altitude, the user is according to children's the condition of development, select the control range that corresponds the height earlier, then select the gear that corresponds in this control range, it is more convenient to make the regulation of headrest.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of another angle according to the embodiment of the present invention.

Fig. 3 is an exploded view of fig. 2.

Fig. 4 is a partially enlarged view of a in fig. 3.

Fig. 5 is a schematic structural diagram of a backrest in an embodiment of the present invention.

Fig. 6 is a schematic structural view of the drawstring, the backup plate and the headrest in the embodiment of the present invention.

Detailed Description

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

As shown in fig. 1 to 6, a headrest adjusting mechanism comprises a headrest 1, a backrest plate 2 and a backrest 3, wherein the headrest 1 and the backrest plate 2 can move up and down and be locked relative to the backrest 3.

The backrest 3 openly is equipped with spout 4, and the 3 backs of backrest are equipped with recess 5, and spout 4 is linked together through-hole 6 with recess 5, is equipped with the stand 7 of vertical setting in the through-hole 6, and 7 both ends of stand all are equipped with a plurality of locked grooves 8, and a plurality of locked grooves 8 form a plurality of gears of head rest adjustment mechanism.

The backrest plate 2 is located headrest 1 below and is connected with headrest 1, and in the spout 4 was located to the backrest plate 2 and headrest 1 slided together, the backrest plate 2 was equipped with down T type groove 9 with the back of headrest 1, was equipped with a pair of safety belt perforation 10 and a pair of transverse through hole 11 on the backrest plate 2, and safety belt perforation 10 is located transverse through hole 11 top, and a pair of safety belt perforation 10 and a pair of transverse through hole 11 set up according to the central line symmetry of falling T type groove 9.

A pull belt 12 is arranged between the backup plate 2 and the backrest 3 and between the headrest 1 and the backrest 3, the pull belt 12 is in an inverted T shape, the pull belt 12 is slidably arranged in an inverted T-shaped groove 9, and the pull belt 12 moves upwards relative to the backup plate 2 by a certain height to drive the headrest 1 and the backup plate 2 to move upwards relative to the backrest 3, namely the height of the lower end part of the inverted T-shaped groove 9 is larger than that of the lower end part of the pull belt 12, the pull belt is required to move upwards by a certain height to drive the headrest and the backup plate to move upwards together, in the embodiment, the upper end part of the pull belt 12 is a pull ring 13, the pull ring 13 is exposed out of the headrest 1, the lower end part of the pull belt 12 is provided with a pair of guide holes 14, each guide hole 14 comprises a vertical hole 15 and an inclined hole 16, the inclined hole 16 is communicated with the vertical hole 15, the inclined hole 16 extends downwards from the vertical hole 15, and the distance between the inclined hole 16 and the vertical hole is, the guide hole 14 corresponds to the lateral through hole 11.

In order to more stably fix the pull belt 12, the upright post 7 is covered on the inverted T-shaped groove 9, so that the pull belt 12 is not separated from the inverted T-shaped groove 9.

In this embodiment, a second fixing block 17 and a first fixing block 18 are disposed in the groove 5, the second fixing block 17 penetrates through the through hole 6 and is fixedly connected with the lower end portion of the pull strap 12, a pair of guide holes 14 are also disposed on the second fixing block 17, the guide holes on the second fixing block correspond to the guide holes on the pull strap completely, the first fixing block 18 deviates from the upright post 7 compared with the second fixing block 17, the first fixing block 18 penetrates through the through hole and is fixedly connected with the backup plate 2, a pair of transverse through holes 11 are disposed on the first fixing block 18, and the transverse through holes on the first fixing block correspond to the transverse through holes on the backup plate completely.

The horizontal through-hole 11 wears to be equipped with the lock post (not shown in the figure) in the guiding hole 14, lock post and locked groove 8 looks adaptation, and stretching strap 12 is at the reciprocating in-process of relative backup plate 2, through the setting of horizontal through-hole and guiding hole, and the lock post can transversely be gone into or transversely breaks away from locked groove 8, realizes the unblock and the locking of head rest, backup plate and back.

The first fixed block 18 is hinged with a stroke adjusting block 19, the stroke adjusting block 19 is slidably arranged in the groove 5 along with the first fixed block 18, the upper side wall 51 of the groove 5 is positioned on the moving track of the first fixed block 18 and the stroke adjusting block 19 so as to form a limiting part for limiting the movement of the first fixed block and the stroke adjusting block, one end of the stroke adjusting block 19, which is far away from the first fixed block 18, is provided with a connecting rod 20, in the embodiment, one end of the stroke adjusting block 19 is hinged on the lower end of the first fixed block 18, so as to facilitate the locking of the stroke adjusting block 19 relative to the first fixed block 18 and save the space of the whole child safety seat during installation, the rotating angle of the stroke adjusting block relative to the first fixed block is 180 degrees, namely, the stroke adjusting block 19 can realize semi-circle rotation relative to the backup plate, and in the rotating process of the stroke adjusting block, the stroke adjusting block and the first fixed block can, after the stroke adjusting block rotates downwards 180 degrees relative to the backup plate, the height of the headrest which moves upwards for adjustment can be increased.

In the embodiment, the upward movement of the headrest 1 and the backup plate 2 relative to the backrest 3 is divided into two conditions through the arrangement of the stroke adjusting block 19, the first is that when the connecting rod 20 is positioned right above the first fixing block 18, the connecting rod 20 corresponds to the pair of safety belt through holes 10 on the backup plate 2, at this time, a five-point safety belt is generally adopted to bind children, the children sitting on the base are small, the five-point safety belt passes through the safety belt through holes and is tightly wound with the connecting rod, the maximum height of the upward adjustment of the headrest and the backup plate is equal to the distance between the stroke adjusting block and the upper side wall of the groove, the second is that when the child is relatively large in development, the five-point safety belt is not adopted any more, the connecting rod is grasped to drive the stroke adjusting block to rotate downwards 180 degrees relative to the first fixing block, namely, the connecting rod is positioned below the first fixing block, the maximum height of the upward adjustment of the headrest and the backup plate is, the maximum height of adjustment in this case is greater than in the first case. Certainly, the stroke adjusting block can be in other forms, the adjusting height of the headrest and the backrest plate relative to the backrest can be divided into three or more sections, corresponding adjusting height is selected firstly, for example, when a five-point safety belt is adopted, the stroke adjusting block is rotated upwards, the connecting rod is positioned above the first fixed block, when a three-point safety belt is adopted, the stroke adjusting block is rotated downwards, the connecting rod is positioned below the first fixed block, and then corresponding locking grooves are selected in corresponding adjusting height ranges according to specific conditions of children, namely corresponding gears are selected, so that gear shifting is more convenient, of course, the stroke adjusting block does not need to be arranged on the back of the backrest, and only the height adjusting sections are selected by users.

The process of unlocking and locking the headrest and the back plate relative to the backrest is as follows: the pulling pull ring drives the pull belt to move upwards relative to the backup plate, the lock cylinder transversely breaks away from the lock groove along the transverse through hole, unlocking is achieved, the pull ring continues to be pulled, the pull belt is abutted to the inverted T-shaped groove, the backup plate and the headrest are driven to move upwards relative to the backrest together, the proper lock groove is selected within the height adjusting range, then the pull ring is loosened, the pull belt moves downwards relative to the backup plate, the lock cylinder is transversely clamped into the corresponding lock groove, and locking of the headrest, the backup plate and the backrest is achieved. Namely, the unlocking and the locking are realized in the up-and-down moving process of the drawstring relative to the backup plate. When adopting the five-point type safety belt, connecting rod in the stroke regulating block is located first fixed block top, head rest and backup plate reciprocate between the side wall on stroke regulating block and recess, then lock in this height-adjusting range, when needing to protect more big children of development, do not adopt five-point type safety belt protection children, carry out 180 degrees rotations downwards with the relative backup plate of stroke regulating block, the connecting rod is located first fixed block below, then stimulate the pull ring again and drive relative backup plate and up-move, reciprocate between the side wall on first fixed block and recess, then lock in this height-adjusting range.

Although the preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a headrest adjustment mechanism, includes headrest, backup plate and back, the headrest can be relative with the backup plate the back reciprocates and locks together, its characterized in that: the back is equipped with first fixed block and spacing portion, it has the stroke control piece to articulate on the first fixed block, first fixed block passes back and backup plate fixed connection, stroke control piece, first fixed block and backup plate are relative together the back reciprocates, first fixed block one end is kept away from to the stroke control piece is located during first fixed block top, the head rest drives the stroke control piece with the backup plate and is relative after the back upwards removes a take the altitude, the stroke control piece with spacing portion looks butt rotates downwards the stroke control piece makes first fixed block one end is kept away from to the stroke control piece is located during first fixed block below, the head rest drives the stroke control piece with the backup plate and is relative after the back upwards removes a take the altitude, first fixed block with spacing portion looks butt.

2. The headrest adjustment mechanism of claim 1, wherein: and when the connecting rod is positioned above the first fixed block, the connecting rod corresponds to the pair of safety belt through holes on the backup plate.

3. The headrest adjustment mechanism of claim 1, wherein: the back of the backrest is provided with a groove, the first fixing block and the stroke adjusting block are slidably arranged in the groove, and the limiting part is an upper side wall of the groove corresponding to the first fixing block.

4. The headrest adjustment mechanism of claim 1, wherein: drawstrings are arranged between the headrest and the backrest and between the backup plate and the backrest, and the drawstrings can drive the headrest and the backup plate to move up and down and lock relative to the backrest.

5. The headrest adjustment mechanism of claim 4, wherein: the back of the headrest and the back of the backup plate is provided with a reversed T-shaped groove, the drawstring is in a reversed T shape, the drawstring is slidably arranged in the reversed T-shaped groove, the drawstring is opposite to the backup plate and moves upwards for a certain height to drive the headrest and the backup plate to be opposite to each other, and the backup plate moves upwards.

6. The headrest adjustment mechanism of claim 5, wherein: be equipped with the through-hole on the back, be equipped with the stand of vertical setting in the through-hole, the stand lid is located on the type groove of falling T, the stand both ends all are equipped with a plurality of locked grooves, wear to be equipped with a pair of lock post on backup plate and the stretching strap, the lock post with locked groove looks adaptation, the lock post is transversely gone into or is transversely broken away from at the reciprocating in-process horizontal card of the relative backup plate of stretching strap in the locked groove.

7. The headrest adjustment mechanism of claim 6, wherein: the back plate is provided with a pair of transverse through holes, the drawstring is provided with a pair of guide holes, and the lock column penetrates through the transverse through holes and the guide holes.

8. The headrest adjustment mechanism of claim 7, wherein: the guiding hole comprises a vertical hole and an inclined hole, the vertical hole is communicated with the inclined hole, the inclined hole is formed by downward extending from the vertical hole, and the distance between the guiding holes is gradually increased from one end, close to the vertical hole, of the inclined hole to one end, far away from the vertical hole, of the inclined hole.