CN107776443A - Safety seat and backrest angle adjusting mechanism thereof - Google Patents

Abstract

The present invention discloses a backrest angle adjustment mechanism, which is suitable for a safety seat, and comprises a sliding groove arranged along the sliding direction of the seat and a connecting rod slidably matched with the sliding groove, wherein the sliding groove is arranged on the base of the safety seat, and the connecting rod is fixed to the seat, and when the seat slides relative to the base, the backrest pivotally connected to the seat can be driven to move, thereby changing the height of the backrest against the base, and realizing the backrest angle adjustment, and during this process, the angle of the seat relative to the base remains unchanged, making the operation of backrest angle adjustment more convenient, and the structure of the backrest angle adjustment mechanism is simple. The present invention also discloses a safety seat having the backrest angle adjustment mechanism.

Description

Safety seat and its backrest angle adjustment mechanism

technical field

The invention relates to the technical field of children's products, in particular to a safety seat and its backrest angle adjustment mechanism.

Background technique

With the widespread use of infant vehicles, people have higher and higher functional requirements for infant vehicles. Not only do they hope that infant vehicles can make infants safer while riding, but they also hope that infant vehicles can To make infants and young children ride more comfortably, and hope that the infant and young children's carrier is more convenient to use and operate.

Take the safety seat as an example. After the safety seat is installed on the car seat, the restraint device is used to restrain the infant on it, which can effectively reduce the chance of the infant being injured in the case of emergency braking or accidental collision of the car. Existing safety seats usually include a seat and a backrest, and the backrest is generally equipped with an angle adjustment device to adjust its angle relative to the seat, so that the safety seat can adapt to the different needs of infants and children and improve the comfort of infants and young children. comfort. However, most of the angle adjustment devices installed on the existing safety seats are complex in structure, and when adjusting the angle, the angle of the seat and the backrest relative to the base is mostly changed integrally, and the angle of the backrest relative to the seat cannot be changed independently, resulting in Use is limited.

Therefore, it is necessary to provide a backrest angle adjustment mechanism and safety seat with simple structure and easy operation to solve the above-mentioned deficiencies in the prior art.

Contents of the invention

The object of the present invention is to provide a backrest angle adjustment mechanism with simple structure and easy operation.

Another object of the present invention is to provide a safety seat with a backrest angle adjustment mechanism with simple structure and easy operation.

In order to achieve the above object, the technical solution of the present invention is to provide a backrest angle adjustment mechanism, which is suitable for a safety seat. The safety seat includes a base, a seat slidably connected to the base, and a backrest pivotally connected to the seat. The backrest angle adjustment mechanism includes a sliding groove arranged along the sliding direction of the seat and a connecting rod slidingly matched with the sliding groove, the sliding groove is arranged on the base, the connecting rod is fixed on the seat, and the seat slides relative to the base to drive the back Adjust the angle of the backrest by changing the height of the backrest against the base.

Preferably, the backrest angle adjustment mechanism further includes a positioning component arranged between the seat and the base for locking the seat to the base.

Preferably, the backrest angle adjustment mechanism further includes an engaging part arranged along the sliding direction of the seat, the engaging part is arranged on the base, the positioning assembly is arranged on the seat, and the positioning assembly has a locking part engaged with the engaging part. state and an unlocked state separated from the engaging portion.

Preferably, the engaging portion is a plurality of engaging holes opened along the sliding direction of the seat.

Preferably, the positioning assembly includes a locking member, a driving member and an operating member; the locking member has a first position engaged with the engaging part and a second position disengaged from the engaging part; connected, the driving part slides to drive the locking part to switch between the first position and the second position; the operating part slides along the sliding direction of the seat and is connected with the driving part, and the operating part slides to drive the driving part to slide.

Preferably, a drive slot is provided on the operating part, and a boss that matches the drive slot protrudes from the drive part. The boss passes through the drive slot, and the operating part slides to drive the drive part through the drive slot and the boss. slide.

Preferably, the extending direction of the driving groove is intersected with the sliding direction of the seat.

Preferably, the sliding direction of the driving member is perpendicular to the sliding direction of the seat.

Preferably, the positioning assembly further includes a reset member that interferes with the operating member, and the reset member is used to drive the operating member to reset.

Preferably, the operating member protrudes from the front of the seat.

Preferably, the backrest angle adjustment mechanism further includes a connection assembly connected between the backrest and the backrest tube of the safety seat.

Preferably, the connection assembly includes a backrest fixture fixed to the backrest and a crossbar fixed to the backrest fixture, and the crossbar is slidably connected to the backrest pipe. When the angle of the backrest relative to the base is adjusted, the backrest The position of the tube relative to the base does not change.

Preferably, the backrest pipe has a connection groove opened along its axial direction, and the cross bar is slidably passed through the connection groove.

Correspondingly, the present invention also discloses a safety seat, which includes a base, a seat slidably connected to the base, a backrest pivotally connected to the seat with the bottom against the base, and the above-mentioned backrest angle adjustment mechanism.

Preferably, a base fixing part is fixed on the base, a sliding groove is opened on the base fixing part, and the connecting rod slides through the sliding groove and is fixed on the seat.

Preferably, the backrest angle adjustment mechanism also includes a connecting piece, one end of the connecting piece is pivotally connected to the connecting rod, and the other end of the connecting piece is connected to the backrest, and the seat slides to move the backrest through the connecting rod and the connecting piece. .

Preferably, the engaging portion is disposed on the base fixing member.

Preferably, a seat fixing part is fixed on the seat, and the seat fixing part is fixed with the connecting rod.

Preferably, the safety seat further includes a backrest tube fixed to the base, and the backrest tube and the backrest are connected through a connecting component.

Preferably, the rear end of the base is provided with an inclined conflicting surface, and the bottom of the back rest is removable against the conflicting surface.

Compared with the prior art, because the backrest angle adjustment mechanism of the present invention includes a sliding groove arranged along the sliding direction of the seat and a connecting rod slidingly fitted with the sliding groove, the sliding groove is arranged on the base of the safety seat, and is connected to The rod is fixed on the seat, and when the seat slides relative to the base, it can drive the movement of the back rest pivotally connected with the seat, thereby changing the height of the back rest against the base, and realizing the angle adjustment of the back rest. During the process, the angle of the seat relative to the base remains unchanged, which makes the operation of adjusting the backrest angle more convenient, and the structure of the backrest angle adjustment mechanism is simple. Correspondingly, the safety seat with the backrest angle adjustment mechanism also has the same effect.

Description of drawings

Fig. 1 is a side view of the backrest of the safety seat of the present invention in a first position.

FIG. 2 is a sectional view of FIG. 1 .

Fig. 3 is a side view of the backrest of the safety seat of the present invention in a second position.

FIG. 4 is a sectional view of FIG. 3 .

Fig. 5 is a rear view of the safety seat of the present invention.

Fig. 6 is a schematic structural view of the housing after the backrest in Fig. 5 is removed.

Fig. 7 is a schematic structural view of the backrest angle adjustment mechanism of the present invention.

Fig. 8 is a structural schematic diagram of further removing the backrest in Fig. 7 .

Fig. 9 is a structural schematic diagram of the safety seat of the present invention with the backrest removed.

Fig. 10 is a structural schematic view of the removed seat in Fig. 9 .

FIG. 11 is a schematic diagram of another state of FIG. 10 .

Detailed ways

Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.

Referring first to FIGS. 1-4 , the safety seat 1 of the present invention includes a base 10 , a seat 20 slidably connected to the base 10 , and a backrest 30 pivotally connected to the seat 20 and resting against the base 10 . In the present invention, the seat 20 slides along the base 10 to drive the backrest 30 to move, so that the height of the backrest 30 against the base 10 is changed, thereby achieving the angle adjustment of the backrest 30 .

Specifically, the rear end of the base 10 is provided with an inclined resisting surface 11 , and the bottom of the backrest 30 is detachably resisted against the resisting surface 11 .

As shown in FIGS. 5-6 , the safety seat 1 further includes a backrest tube 40 fixed at the rear end of the base 10 and a top tether 50 fixed at the upper end of the backrest tube 40 . The backrest 30 is disposed outside the backrest tube 40 , and the top strap 50 is exposed outside the backrest 30 . When adjusting the angle of the backrest 30 in the present invention, the angle of the backrest 30 relative to the base 10 changes, but the position of the backrest tube 40 relative to the base 10 remains unchanged, so it is not necessary to adjust the tightness of the top tether 50 Changing the angle of the backrest 30 (see below for details) makes the operation more convenient.

Referring to Figures 2 and 4 again below, the safety seat 1 of the present invention also includes a backrest angle adjustment mechanism 60. With the setting of the backrest angle adjustment mechanism 60, the seat 20 can slide back and forth relative to the base 10. The backrest 30 can act together to change the height of the backrest 30 against the base 10 to realize the angle adjustment of the backrest 30 , while the angle of the seat 20 relative to the base 10 remains unchanged.

Specifically, the backrest angle adjustment mechanism 60 includes a sliding groove 61 arranged along the sliding direction of the seat 20 and a connecting rod 62 slidingly fitted with the sliding groove 61, wherein the sliding groove 61 is arranged on the base 10, and the connecting rod 62 is fixed on the seat. Chair 20.

The backrest angle adjustment mechanism 60 also includes an engaging portion 63 arranged along the sliding direction of the seat 20 and a positioning assembly 64 matched with the engaging portion 63. The engaging portion 63 is arranged on the base 10, and the positioning assembly 64 is arranged on the seat. Chair 20, the positioning assembly 64 has a locked state engaged with the engaging portion 63 and an unlocked state disengaged from the engaging portion 63. When the positioning assembly 64 is in the locked state, the positioning assembly 64 locks the seat 20 To the base 10 , when the positioning assembly 64 is in the unlocked state, the seat 20 can slide relative to the base 10 .

2 , 4 , 6-7 , the backrest angle adjustment mechanism 60 further includes at least one connecting piece 65 , which is pivotally connected to the connecting rod 62 , and the connecting piece 65 is connected to the lower end of the backrest 30 . When the seat 20 slides, the connecting member 65 is pulled by the connecting rod 62 to drive the backrest 30 to move so that the angle of the backrest 30 can be adjusted relative to the base 10 .

In addition, the backrest angle adjustment mechanism 60 also includes a connection assembly 66 connected between the backrest 30 and the backrest pipe 40. With the arrangement of the connection assembly 66, when the angle adjustment of the backrest 30 relative to the base 10 is performed, the backrest The position of the tube 40 relative to the base 10 remains unchanged, therefore, the angle of the backrest 30 can be adjusted without adjusting the tightness of the top tether 50, and the operation is more convenient.

As shown below in conjunction with Figures 7-11, in one embodiment of the present invention, a base fixture 12 is also fixed on the base 10, and the sliding groove 61 and the engaging portion 63 are both arranged on the base fixture 12, and both It is arranged along the sliding direction of the seat 20 . The connecting rod 62 slides through the sliding slot 61 and is fixed on the rear end of the seat 20 . The positioning component 64 is disposed on the front end of the seat 20 and detachably engages with the engaging portion 63 .

Preferably, the rear end of the seat 20 is also fixed with a seat fixture 21, and the seat fixture 21 is fixed to the connecting rod 62. When the seat 20 slides, the seat fixture 21 drives the connection connected thereto. The rod 62 slides in the slide groove 61 .

In this embodiment, the base fixing part 12 and the seat fixing part 21 are preferably iron sheets, but they are not limited thereto.

Referring to Figures 7 and 10, in this embodiment, in order to ensure the stability of the sliding of the seat 20, a sliding guide groove 61a is also provided at the front end of the base fixing member 12, and a guide rod 62a is penetrated in the sliding guide groove 61a and connected On the front end of the seat 20, understandably, more sliding guide grooves 61a may be provided, which is well known to those skilled in the art.

In addition, referring to FIGS. 10-11 , the backrest tube 40 in the present invention is welded to the base fixture 12 , so no matter how the angle of the backrest 30 changes, the position of the backrest tube 40 will not change.

Continuing to refer to Fig. 7-11, the engaging portion 63 is a plurality of engaging holes opened on the base fixing member 12 along the sliding direction of the seat 20, and the positioning component 64 is detachably engaged in any engaging hole . When the positioning component 64 is disengaged from the engaging hole, the seat 20 can slide relative to the base 10 , and when the positioning component 64 engages in any engaging hole, the seat 20 is locked on the base 10 .

As shown below in conjunction with FIGS. 4 and 10-11 , the positioning assembly 64 includes an operating member 641 , a driving member 642 , a locking member 643 and a reset member 644 (see FIG. 4 ). Wherein, the operating member 641 is slidably arranged along the sliding direction of the seat 20 and is connected with one end of the driving member 642, and its end is exposed in front of the seat 20; the driving member 642 is arranged along a direction perpendicular to the sliding direction of the seat 20 , the other end of the driving member 642 is fixed to the locking member 643, the locking member 643 has a first position engaged with the engaging portion 63 and a second position disengaged from the engaging portion 63; the reset member 644 is in contact with the operating member Between 641 and seat 20. The sliding of the operating member 641 can drive the driving member 642 to slide, and the sliding of the driving member 642 drives the locking member 643 to switch between the first position and the second position. The reset member 644 is used to drive the operating member 641 to reset.

Referring to Figures 8 and 11, the operating member 641 is provided with a driving groove 6411, and the extending direction of the driving groove 6411 intersects with the sliding direction of the seat 20; The protrusion 6421 passes through the driving groove 6411 . When the operating member 641 is pulled outward, the operating member 641 slides and the driving member 642 moves in a direction perpendicular to the sliding direction of the seat 20 through the interaction of the driving groove 6411 and the boss 6421, so that the locking member 643 is disengaged from the card. At this time, the seat 20 and the base 10 can slide relative to each other, and the angle adjustment of the backrest 30 can be realized.

In the present invention, the reset member 644 is preferably a spring, and its two ends respectively resist the operating member 641 and the seat 20. When the operating member 641 is pulled outward, the reset member 644 is compressed, and after losing the force on the operating member 641, The reset member 644 restores the deformation and drives the operating member 641 to reset. Of course, the return member 644 is not limited to a spring.

Referring again to FIGS. 6-8 , the connection assembly 66 includes a backrest fixture 661 fixed to the backrest 30 and a crossbar 662 fixed to the backrest fixture 661 , and the crossbar 662 is slidably connected to the backrest tube 40 . Wherein, the backrest tube 40 has a connection groove 41 opened along its axial direction, and the cross bar 662 is slidably passed through the connection groove 41 . When the angle of the backrest 30 relative to the base 10 is adjusted, the cross bar 662 slides up and down along the backrest tube 40 .

The angle adjustment process of the backrest 30 of the safety seat 1 of the present invention will be described below with reference to FIGS. 1-11 .

Referring first to FIGS. 1-2 , when the backrest 30 of the safety seat 1 is in the first position, the backrest 30 is in contact with the highest point of the contact surface 11 , and the rear edge of the backrest 30 protrudes beyond the rear edge of the base 10 .

When adjusting the angle of the backrest 30, first pull the operating part 641 outward, the operating part 641 slides and drives the driving part 642 to move in a direction perpendicular to the sliding direction of the seat 20, and then drives the locking part 643 to disengage from the engaging hole, thus The seat 20 and the base 10 can slide relative to each other, as shown in FIG. 10 .

Next, pull the seat 20 to make it slide toward the front of the safety seat 1. During the sliding process of the seat 20, keep it parallel to the base 10 so that the angle of the seat 20 relative to the base 10 does not change, nor does it will tilt. The seat 20 slides to drive the connecting rod 62 to slide forward along the sliding groove 61, and the connecting member 65 pivotally connected to it is pulled by the connecting rod 62, so that the backrest 30 slides along the base 10 to the front of the safety seat 1 , as shown in Figure 7-8; at the same time, the cross bar 662 fixed on the backrest 30 slides in the connection groove 41 along the backrest pipe 40, so that the angle of the backrest 30 relative to the backrest pipe 40 changes, and the backrest 30 is realized. angle adjustment. When adjusted to a suitable angle, the operating member 641 is released, which resets under the action of the reset member 644, thereby driving the driving member 642 to move, so that the locking member 643 is engaged in the corresponding engaging hole, thereby the seat 20 Lock onto the base 10 again.

Moreover, during the angle adjustment process of the backrest 30 relative to the base 10, the position of the backrest tube 40 remains unchanged, so the angle of the backrest 30 can be adjusted without adjusting the tightness of the top tether 50, and the operation is easier.

As shown in Figures 8 and 11, when the connecting rod 62 slides to the front end of the sliding groove 61, the angle between the backrest 30 and the seat 20 is the largest. At the lowest point, the rear edge of the backrest 30 is located within the rear edge of the base 10, as shown in FIGS. 3-4.

When the angle of the backrest 30 needs to be adjusted again, the operating part 641 is also pulled out to drive the locking part 643 out of the engaging hole, and the seat 20 can be pushed to slide behind the safety seat 1 along the base 10 and fixed on the back of the seat 20 The connecting rod 62 at the end links the backrest 30 to slide to the rear of the safety seat 1, and finally the backrest 30 can be adjusted to the state shown in Fig. 1-2.

To sum up, the backrest angle adjustment mechanism 60 of the present invention includes a sliding groove 61 arranged along the sliding direction of the seat 20 and a connecting rod 62 slidingly fitted with the sliding groove 61, and the sliding groove 61 is provided on the safety seat 1 The base 10, the connecting rod 62 is fixed on the seat 20, when the seat 20 slides relative to the base 10, it can drive the backrest 30 pivotally connected with the seat 20 to move, and then make the backrest 30 lean against the base 10 The height of the backrest 30 is changed to realize the angle adjustment of the backrest 30, and in this process, the angle of the seat 20 relative to the base 10 remains unchanged, so that the angle adjustment of the backrest 30 is easy to operate; and the structure of the backrest angle adjustment mechanism 60 is simple .

Correspondingly, the safety seat 1 having the backrest angle adjustment mechanism 60 also has the same effect.

The structures of other parts of the safety seat 1 of the present invention are well known to those skilled in the art, and will not be described in detail here.

What is disclosed above is only a preferred embodiment of the present invention, and of course it cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the patent scope of the present invention still fall within the scope of the present invention.

Claims (20)

1. A backrest angle adjustment mechanism, suitable for a safety seat, the safety seat includes a base, a seat slidably connected to the base, and a backrest pivotally connected to the seat, characterized in that it includes : a sliding groove arranged along the sliding direction of the seat, the sliding groove is arranged on the base; a connecting rod slidingly fitted with the sliding groove, the connecting rod is fixed to the seat; The seat slides relative to the base to drive the backrest against the base to change its height, thereby realizing the angle adjustment of the backrest. 2 . The backrest angle adjustment mechanism according to claim 1 , further comprising a positioning component disposed between the seat and the base for locking the seat to the base. 3 . 3. The backrest angle adjustment mechanism according to claim 2, further comprising an engaging portion arranged along the sliding direction of the seat, the engaging portion is arranged on the base, and the positioning assembly Located on the seat, the positioning component has a locked state engaged with the engaging portion and an unlocked state disengaged from the engaging portion. 4. The backrest angle adjustment mechanism according to claim 3, wherein the engaging portion is a plurality of engaging holes opened along the sliding direction of the seat. 5. The backrest angle adjustment mechanism according to claim 3, wherein the positioning assembly comprises: a locking member having a first position engaged with the engaging portion and a second position disengaged from the engaging portion; a driving part is slidably arranged and connected to the locking part, and the driving part slides to drive the locking part to transform between the first position and the second position; The operating part is slidably arranged along the sliding direction of the seat and connected with the driving part, and the operating part slides to drive the driving part to slide. 6. The backrest angle adjustment mechanism according to claim 5, wherein a driving slot is opened on the operating part, and a boss cooperating with the driving slot is protruded on the driving part, and the The protruding post is passed through the driving groove, and the operating part slides to drive the driving part to slide through the driving groove and the protruding post. 7. The backrest angle adjustment mechanism according to claim 6, characterized in that, the extending direction of the driving groove is intersected with the sliding direction of the seat. 8. The backrest angle adjustment mechanism according to claim 5, wherein the sliding direction of the driving member is perpendicular to the sliding direction of the seat. 9 . The backrest angle adjustment mechanism according to claim 5 , wherein the positioning assembly further comprises a reset member that interferes with the operating member, and the reset member is used to drive the operating member to reset. 10 . 10. The backrest angle adjustment mechanism according to claim 5, wherein the operating member protrudes from the front of the seat. 11. The backrest angle adjustment mechanism according to claim 1, further comprising a connection assembly connected between the backrest and the backrest tube of the safety seat. 12. The backrest angle adjustment mechanism according to claim 11, wherein the connection assembly comprises: a backrest fixture fixed to the backrest; A crossbar fixed to the backrest fixture, and the crossbar is slidably connected to the backrest tube; When the angle of the backrest relative to the base is adjusted, the position of the backrest tube relative to the base remains unchanged. 13. The backrest angle adjustment mechanism according to claim 12, characterized in that, the backrest pipe has a connection groove opened along its axial direction, and the cross bar is slidably inserted in the connection groove . 14. A safety seat, characterized by comprising: a base, a seat slidably connected to the base, a back rest pivotally connected to the seat with the bottom against the base, and as claimed in claim 1- 13. The backrest angle adjustment mechanism described in any one of 13. 15. The safety seat according to claim 14, wherein a base fixing part is fixed on the base, the sliding groove is opened in the base fixing part, and the connecting rod slides through the sliding slot and fixed to the seat. 16. The safety seat according to claim 15, wherein the backrest angle adjustment mechanism further comprises a connecting piece, one end of the connecting piece is pivotally connected to the connecting rod, and the other end of the connecting piece Connected to the backrest, the seat slides to move the backrest through the connecting rod and the connecting piece. 17. The safety seat according to claim 15, wherein the engaging portion is disposed on the base fixing member. 18. The safety seat according to claim 15, wherein a seat fixing member is fixed on the seat, and the seat fixing member is fixed to the connecting rod. 19. The safety seat according to claim 14, further comprising a backrest tube fixed to the base, the backrest tube and the backrest are connected through the connection assembly. 20 . The safety seat according to claim 14 , wherein the rear end of the base is provided with an inclined contact surface, and the bottom of the backrest is detachably contacted with the contact surface. 21 .