Disclosure of Invention
The present invention has been made in view of the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a child safety seat which can adjust an angle between a seat cushion and a backrest of a child while the child is seated in the child safety seat, and which is convenient to adjust.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a child safety seat, includes casing, seatpad and back, the front portion of seatpad with the front portion of casing is rotated through the first axle and is connected, the rear portion of back with the rear portion of casing is passed through the second axle and is rotated and connect, the front portion of seatpad with one of two parts in the rear portion of back can also be relative the casing sets up with sliding, the front portion of back with the rear portion of seatpad is passed through the third axle and is rotated and connect, the back with form an contained angle between the seatpad, child safety seat is still including the activity setting and is in be used for adjusting on the casing the back with the regulation pole of contained angle between the seatpad, adjust the pole at least with the seatpad with one of two parts in the back cooperatees.
Preferably, the adjusting rod is rotatably connected with the housing through a fourth shaft.
Furthermore, a first matching part is arranged on the adjusting rod, a second matching part matched with the first matching part in an abutting mode is arranged on the seat cushion and/or the backrest, and the first matching part is arranged below the second matching part.
Furthermore, the adjusting rod is further provided with an operating part which is operated by a human hand during adjustment, the operating part extends out of the shell from the rear part of the shell, and the operating part and the first matching part are respectively positioned on two opposite sides of the fourth shaft.
Preferably, a first sliding groove is formed in one of the two front parts of the seat cushion and the housing, the first shaft is rotatably disposed on the other of the two front parts of the seat cushion and the housing, and the first shaft is located in the first sliding groove and slidably disposed along a longitudinal extension direction of the first sliding groove; or a second sliding groove is arranged on one of the two parts of the back part of the backrest and the back part of the shell, the second shaft is rotatably arranged on the other part of the two parts of the back part of the backrest and the back part of the shell, and the second shaft is positioned in the second sliding groove and is slidably arranged along the length extension direction of the second sliding groove.
Preferably, the child safety seat further comprises a locking structure for locking the relative position of the adjusting rod and the shell at different gear positions so as to form different included angles between the backrest and the seat cushion, and the locking structure is arranged between the shell and the adjusting rod.
Further, the locking structure comprises a plurality of gear grooves arranged on the shell and a lock pin arranged on the adjusting rod and matched with the gear grooves, when the locking structure is in a locking state, the lock pin is located in the gear grooves, and when the locking structure is in an unlocking state, the lock pin is disengaged from the gear grooves.
Furthermore, the housing is further provided with a connecting groove which is used for communicating two adjacent gear grooves and is matched with the lock pin, the connecting groove extends along the movement direction of the adjusting rod relative to the housing, the lock pin is slidably arranged on the adjusting rod, and the lock pin can slide relative to the adjusting rod and is separated from the gear grooves into the connecting groove or separated from the connecting groove into the gear grooves.
Furthermore, the locking structure further comprises an elastic member for driving the lock pin to automatically disengage from the connecting groove and slide into the shift groove, and two parts of the elastic member are respectively arranged on the lock pin and the housing.
Furthermore, the adjusting rod comprises side rods positioned at the left side and the right side of the shell and a cross rod connected between the side rods at the left side and the right side, the side rods at the left side and the right side are respectively rotatably connected with the shell, the side rod at each side is matched with at least one of the seat cushion and the backrest, the locking structure is respectively arranged between the side rods at each side and the shell, the child safety seat further comprises unlocking handles used for driving the lock pins at the two sides to slide relative to the side rods and to be separated from the gear grooves into the connecting grooves, and the unlocking handles are respectively connected with the lock pins at the left side and the right side.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: when the adjusting rod is operated to move relative to the shell, the child safety seat can drive the backrest and the seat cushion to rotate relatively through the matching between the adjusting rod and the backrest and/or the seat cushion, so that the angle between the backrest and the seat cushion is changed, the child safety seat has multiple use states such as sitting posture and lying posture, and the comfort of the child safety seat in use can be improved. Meanwhile, the angle adjusting mode between the backrest and the seat cushion of the child safety seat is simple in structure and convenient to operate.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the specific embodiments.
As shown in fig. 1 to 12, the child safety seat of the present invention includes a housing 1, and a backrest 2 and a seat cushion 3 respectively provided in the housing 1.
The front part of the seat cushion 3 is rotatably connected to the front part of the housing 1 via a first shaft 41, the rear part of the backrest 2 is rotatably connected to the rear part of the housing 1 via a second shaft 42, one of the two parts, namely the front part of the seat cushion 3 and the rear part of the backrest 2, can also be arranged slidably relative to the housing 1, and the front part of the backrest 2 and the rear part of the seat cushion 3 are rotatably connected via a third shaft 43. An included angle is formed between the backrest 2 and the seat cushion 3, and the backrest 2 and the seat cushion 3 can relatively rotate, so that the included angle formed between the backrest 2 and the seat cushion 3 changes, and the child safety seat can have different use states, as shown in figures 1-6, the child safety seat is in a sitting posture use state, and as shown in figures 7-12, the child safety seat is in a lying posture use state.
Specifically, a first slide groove 31 is provided in one of the two front portions of the seat cushion 3 and the housing 1, a first shaft 41 is rotatably provided in the other of the two front portions of the seat cushion 3 and the housing 1, the first slide groove 31 extends in the front-rear direction, and the first shaft 41 is located in the first slide groove 31 and slidably provided in the longitudinal direction of the first slide groove 31.
Alternatively, a second sliding groove is provided in one of the two rear parts of the backrest 2 and the housing 1, the second shaft 42 is rotatably provided in the other of the two rear parts of the backrest 2 and the housing 1, the second sliding groove extends in the up-down direction, and the second shaft 42 is located in the second sliding groove and slidably provided in the longitudinal direction of the second sliding groove.
In the present embodiment, the front portion of the seat cushion 3 can be provided to be rotatable with respect to the housing 1 and also slidable with respect to the housing 1, and the rear portion of the backrest 2 can be provided to be rotatable only with respect to the housing 1. The first slide groove 31 is provided on the seat cushion 31, and the first shaft 41 is rotatably provided at the front portion of the housing 1.
The child safety seat further comprises an adjusting lever 5 movably arranged on the housing 1, the adjusting lever 5 cooperating with at least one of the two parts of the seat cushion 3 and the backrest 2. Thus, when the adjusting rod 5 is driven to move relative to the shell 1, the seat cushion 3 and the backrest 2 can be driven to rotate relative to each other through the matching between the seat cushion 3 and/or the backrest 2 and the adjusting rod 5, so that the included angle formed between the backrest 2 and the seat cushion 3 is changed, and the using state of the child safety seat is changed.
The adjustment lever 5 is provided with a first engagement portion 51, the seat cushion 3 and/or the backrest 2 is provided with a second engagement portion 32 engaged with the first engagement portion 51, and the second engagement portion 32 is located below the first engagement portion 51.
The adjusting lever 5 is further provided with an operating part 52 for manual operation during adjustment, the first matching part 51 is positioned at the front end part of the adjusting lever 5, the operating part 52 is positioned at the rear end part of the adjusting lever 5, and the operating part 52 extends out of the shell 1 from the rear part of the shell 1, so that the manual operation is facilitated.
In the present embodiment, the second engaging portion 32 is provided at the rear end portion of the seat cushion 3 and the front end portion of the backrest 2, respectively, and the first engaging portion 51 is engaged while abutting against the front end portion of the backrest 2 and the rear end portion of the seat cushion 3. The adjustment lever 5 is rotatably provided on the housing 1 through the fourth shaft 44, i.e., the operating portion 52 and the first fitting portion 51 are located at opposite sides of the fourth shaft 44, respectively. When the operating portion 52 is pushed down or pulled up, the adjustment lever 5 is rotated in opposite directions with respect to the housing 1, so that the adjustment lever 5 is located at different shift positions on the housing 1.
The child safety seat further comprises a locking structure for locking the relative position of the adjustment lever 5 and the housing 1 at different gear positions to fix the child safety seat in different use states, the locking structure being arranged between the housing 1 and the adjustment lever 5.
Specifically, the locking structure includes a plurality of shift grooves 11 provided on the housing 1 and a locking pin 61 provided on the adjustment lever 5 and matching with the shift grooves 11. When the locking structure is in a locked state, the lock pin 61 is located in the gear groove 11, the relative position of the adjusting rod 5 and the shell 1 is fixed, the adjusting rod 5 cannot rotate relative to the shell 1, the included angle formed between the backrest 2 and the seat cushion 3 is fixed, and the child safety seat is fixed in a using state. When the locking structure is in the unlocking state, the lock pin 61 is disengaged from the gear groove 11, and the adjusting rod 5 can rotate relative to the shell 1, so that the included angle formed between the backrest 2 and the seat cushion 3 is changed, and the using state of the child safety seat is adjusted.
The lock pin 61 is slidably provided on the adjustment lever 5. Specifically, the adjusting rod 5 is provided with a third sliding chute 53 matched with the lock pin 61, the third sliding chute 53 extends along the length direction of the adjusting rod 5, and the lock pin 61 is positioned in the third sliding chute 53 and can be slidably arranged along the length extending direction of the third sliding chute 53.
The housing 1 is further provided with a connecting groove 12, the connecting groove 12 extends along the movement direction of the adjusting rod 5 relative to the housing 1, in this embodiment, the connecting groove 12 extends along the circumferential direction of the adjusting rod 5 rotating relative to the housing 1, and two end portions of the connecting groove 12 are respectively communicated with two adjacent gear grooves 11.
The lock pin 61 is matched with the connecting groove 12, and the lock pin 61 can slide relative to the adjusting rod 5 so as to be disengaged from the gear groove 11 and enter the connecting groove 12; or out of the coupling groove 12 and into the shift groove 11. When the locking arrangement is in the unlocked condition, the locking pin is located in the connecting slot 12.
The locking structure further includes an elastic member 62 for driving the lock pin 61 to automatically slide from the coupling groove 12 into the shift position groove 11, and two portions of the elastic member 62 are respectively provided on the lock pin 61 and the housing 1. In this embodiment, the elastic member 62 is a tension spring.
The child safety seat further comprises an unlocking handle 7 movably arranged on the shell 1, and the unlocking handle 7 is connected with the lock pin 61. When the locking mechanism is in the locked state, the unlocking handle 7 is operated to slide the lock pin 61 relative to the adjustment lever 5, so that the lock pin is disengaged from the shift position groove 11 and enters the connecting groove 12.
In this embodiment, the connecting groove 12 is located at the rear of the gear groove 11, and when the unlocking handle 7 is operated to drive the lock pin 61 to slide backwards relative to the adjusting rod 5, the lock pin 61 can be disengaged from the gear groove 11 and enter the connecting groove 12; the elastic force of the elastic member 62 is used to drive the locking pin 61 to slide forward relative to the adjustment lever 5.
In this embodiment, the adjusting lever 5 includes side levers 5a provided on both left and right sides of the housing 1 and a cross bar 5b connected between the side levers 5a on both left and right sides, the side levers 5a on both left and right sides being rotatably connected to the housing 1, respectively, and the side lever 5a on each side being engaged with at least one of the seat cushion 3 and the backrest 2. The locking structures are respectively provided between the side lever 5a of each side and the housing 1, and the unlocking knob 7 is fixedly connected to or integrally provided with the lock pins 61 of the left and right sides, respectively, so that the locking structures of the left and right sides can be simultaneously unlocked when the unlocking knob 7 is operated in the locking state of the locking structures.
When the adjusting lever 5 is locked at the first gear position on the housing 1 by the locking structure, the lock pin 61 is located in the gear position groove 11 above, a first included angle is formed between the backrest 2 and the seat cushion 3, the first shaft 41 is located at the rear end of the first sliding groove 31 in the first sliding groove 31, and the child safety seat is in a sitting posture for use, as shown in fig. 1 to 6.
When the adjusting lever 5 is locked at the second gear position on the housing 1 by the locking structure, the lock pin 61 is located in the gear groove 11 below, a second included angle is formed between the backrest 2 and the seat cushion 3, the second included angle is larger than the first included angle, the first shaft 41 is located at the front end of the first sliding groove 31 in the first sliding groove 31, and the child safety seat is in a lying posture for use, as shown in fig. 7 to 12.
When the child safety seat needs to be adjusted from the sitting posture use state to the lying posture use state, the unlocking handle 7 is pulled backwards, so that the lock pin 61 slides backwards relative to the adjusting rod 5 until the lock pin is separated from the gear groove 11 and enters the connecting groove 12, and the locking structure is unlocked. Pressing the operating portion 52 of the adjusting lever 5 downwards rotates the adjusting lever 5 relative to the housing 1 about the fourth shaft 44, the lock pin 61 moves downwards in the connecting groove 12 along the length extending direction of the connecting groove 12, the first engaging portion 51 of the adjusting lever 5 moves upwards, the backrest 2 rotates upwards about the second shaft 42, the seat cushion 3 rotates upwards about the first shaft 41, the seat cushion 3 slides forwards relative to the housing 1, the first shaft 41 gradually approaches the front end portion of the first sliding groove 31, the included angle between the backrest 2 and the seat cushion 3 gradually increases until the first shaft 41 is located at the front end portion of the first sliding groove 31, the lock pin 61 is located at a position in the connecting groove 12 communicated with the shift position groove 11, the lock pin 61 slides forwards relative to the adjusting lever 5 under the elastic force of the elastic member 62, so as to be released from the connecting groove 12 into the shift position groove 11, and the locking structure is again in a locking state, the child safety seat is in a lying posture for use.
When the child safety seat needs to be adjusted from the lying posture use state to the sitting posture use state, the unlocking handle 7 is operated firstly to unlock the locking structure, and then the operation part 52 of the adjusting rod 5 is pulled upwards, and the movement process of each part is opposite to that of the above.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.