CN101362468A - Stroller with adjustable backrest angle - Google Patents

Abstract

The invention relates to a children's stroller with an adjustable backrest angle, which comprises a frame body, a front wheel arranged at the front and lower part of the frame body, and a rear wheel arranged at the rear and lower part of the frame body. The frame body includes a front wheel support, The rear wheel support, the seat frame arranged between the front wheel support and the rear wheel support, the backrest frame whose lower end is rotatably connected to the seat frame, and the part of the front wheel support above the seat frame or the rear wheel support are rotatably connected with One end of the backrest adjustment rod is provided with a plurality of limit slots along the length of the backrest adjustment rod. A lock block is arranged on the backrest side rod of the backrest frame. The lock block has a first working position and a second working position. The first working position is that the lock block is located in the limit slot, and the second work position is that the lock block is out of the limit slot. When the lock block is located in different limit slots, different angular positions of the backrest relative to the seat frame can be realized , so as to realize the adjustment of multiple angle positions of the backrest frame, the structure is relatively simple and the operation is convenient.

Description

Stroller with adjustable backrest angle

technical field

The invention relates to a child stroller with an adjustable backrest angle.

Background technique

The children's stroller with adjustable backrest angle in the prior art includes a frame body, a front wheel arranged under the front part of the frame body, and a rear wheel arranged under the rear part of the frame body. The front wheel support for placing the front wheels, the rear wheel support for placing the rear wheels, the seat frame arranged between the front wheel support and the rear wheel support, the backrest frame with the lower end connected to the seat frame, the lower end and the front wheel The push handle bar connected to the upper end of the bracket, the existing baby carriage with adjustable backrest angle, as shown in Chinese invention patent 99116937.9, a backrest position adjustment device is arranged between the push handle bar and the backrest frame, and the rear part of the backrest frame is rotatable One end of the second connecting rod is ground connected, one end of the first connecting rod is rotatably connected to the push handle rod, and the other end of the first connecting rod is rotatably connected with the other end of the second connecting rod. During the second connecting rod, the back frame has two angle positions of raising and lowering, but in actual use, the structure of the back frame with only two angle positions cannot meet the actual needs of users.

Contents of the invention

The object of the present invention is to provide a child stroller with a back frame that can be adjusted in multiple angles in order to overcome the shortcomings of the prior art.

In order to achieve the above object, the technical solution adopted by the present invention is: a children's stroller with an adjustable backrest angle, comprising a frame body, a front wheel arranged at the front and bottom of the frame body, and a front wheel arranged at the front and bottom of the cart body The rear wheel below the rear of the frame body. The frame body includes a front wheel bracket for placing the front wheel, a rear wheel bracket for placing the rear wheel, and a rear wheel bracket arranged between the front wheel bracket and the rear wheel bracket. The seat frame in between, the backrest frame whose lower end is rotatably connected to the seat frame, the part of the front wheel bracket or the rear wheel bracket located above the seat frame is rotatably connected to one end of the backrest adjustment rod through the first rotating shaft , the backrest adjustment rod is provided with a plurality of limit slots along its length direction, the backrest frame includes backrest side bars on both sides, and lock blocks are arranged on the backrest side bars. The limit slot is used to limit the position of the lock block relative to the backrest adjustment rod. The lock block has a first working position and a second working position. The first working position is when the lock block is located at the limit position. In the position slot, the second working position is when the lock block breaks away from the limit slot.

One end of the backrest adjusting rod is rotatably connected with the rear wheel bracket.

The backrest frame is provided with an adjustment mechanism for pushing the backrest adjustment lever to switch the lock block between the first working position and the second working position, and the adjustment mechanism includes The adjustment drive block on the backrest side rod axially slides along the backrest side rod, and the other end of the backrest adjustment rod is in conflict with the upper end of the adjustment drive block.

The walls of the two backrest side bars are respectively provided with sliding holes along the axial direction of the backrest side bars, and a sliding pin is fixedly connected to the adjustment drive block, and the sliding pin passes through the The sliding hole is slidably connected to the side bar of the backrest.

The adjustment mechanism further includes a drag cable arranged in the inner cavity of the backrest side bar, and the lower end of the drag cable is connected with the sliding pin.

The back frame is provided with a traction operation part, and the upper end of the traction rope is connected with the traction operation part.

The inner cavity of the backrest side bar is also provided with an elastic piece, one end of the elastic piece is connected with the locking block and the other end is connected with the sliding pin.

A guide groove is formed on the backrest adjusting rod along its length direction, and each of the limiting grooves communicates with the guide groove.

A torsion spring is sheathed on the first rotating shaft, one end of the torsion spring is connected to the rear wheel support and the other end is connected to the backrest adjustment rod.

The locking block is fixedly arranged on the side bar of the backrest.

Due to the use of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art: due to the part of the front wheel bracket or the rear wheel bracket positioned above the seat frame is rotatably connected with an end of the backrest adjustment rod through the first rotating shaft, and There are a plurality of limit slots on the backrest adjustment rod along its length direction, and lock blocks are arranged on the backrest side bars on both sides of the backrest frame. The limit slots are used to limit the adjustment of the lock blocks relative to the backrest. The position of the rod, when the lock blocks are located in different limiting grooves, can realize different angular positions of the backrest relative to the seat frame, thereby realizing the adjustment of multiple angular positions of the backrest, the structure is relatively simple and the operation is convenient.

Description of drawings

Accompanying drawing 1 is the three-dimensional structural diagram of children's stroller of the present invention;

Accompanying drawing 2 is the left side view of children's stroller of the present invention (backrest frame is in sitting position);

Accompanying drawing 3 is the left side view of children's stroller of the present invention (the back frame is between sitting position and semi-lying position);

Accompanying drawing 4 is the left side view of children's stroller of the present invention (the back frame is in the semi-lying posture position);

Accompanying drawing 5 is the magnified rear sectional view of the connection relationship between the backrest frame and the backrest adjustment rod of the present invention;

Accompanying drawing 6 is the enlarged partial sectional view of the connection relationship between the backrest frame, the backrest adjustment rod and the seat frame of the present invention;

Among them: 1. Frame body; 2. Front wheel; 3. Rear wheel; 4. Rear wheel bracket; 5. Front wheel bracket; 6. Push handle bar; 7. Backrest side bar; 8. Backrest frame; 9. Seat frame ;10, backrest adjustment lever; 11, traction operation part; 12, backrest support rod; 13, adjustment drive block; 14, guide groove; 15, limit groove; 16, traction rope; 17, lock block; ; 19, torsion spring; 22, the first rotating shaft; 23, sliding hole; 24, sliding pin.

Detailed ways

The specific content of the present invention is described in detail below in conjunction with accompanying drawing:

As shown in accompanying drawings 1 to 4, the stroller is an umbrella handle car, including a frame body 1, a pair of front wheels 2 arranged on the front and bottom of the frame body 1, and a pair of front wheels 2 arranged behind the frame body. A pair of rear wheels 3 below, the frame body 1 includes front wheel brackets 5 located on both sides and the lower ends are respectively connected to the front wheels 2, located on both sides and the lower ends are respectively connected to the rear The rear wheel support 4 that the wheel 3 is connected, the push handle bar 6 that is positioned at both sides and the lower end is connected with the upper end of the front wheel support 5 on both sides respectively, the upper end of the rear wheel support 4 is connected with the upper end of the push handle bar 6 respectively. In connection, the vehicle frame body 1 further includes a seat frame 9 arranged between the front wheel frame 5 and the rear wheel frame 4 , and a backrest frame 8 whose lower end is rotatably connected to the seat frame 9 .

The back frame 8 includes backrest side bars 7 located on both sides, and backrest support bars 12 arranged crosswise and whose upper and lower ends are connected to the backrest side bars 7 on both sides.

In this specific embodiment, on the rear wheel support 4 of the seat frame 9 top part, an end portion of the backrest adjustment rod 10 is rotatably provided with the first rotating shaft 22, and an end portion of the backrest adjustment rod 10 can also be connected with the front wheel support 5. Phase rotation connection, this structure will not be described in detail here.

On the backrest adjusting rod 10, there are a plurality of limiting grooves 15 along its length direction. There is a guide groove 14, and each of the limiting grooves 15 communicates with the guide groove 14.

A lock block 17 is fixedly connected to the backrest side bar 7, and the lock block 17 has a first working position and a second working position, and the first working position is that the lock block 17 is located in the limiting groove 15 In the second working position, the lock block 17 is disengaged from the limit groove 15, and the lock block 17 is set at different limit positions through the conversion of the lock block 17 between the first working position and the second working position. In the groove 15, the purpose of adjusting the angle of the backrest is reached in this way.

As shown in accompanying drawings 5 and 6, the backrest frame 8 is also provided with a device for pushing the backrest adjustment lever 10 so that the locking block 17 is between the first working position and the second working position The adjustment mechanism of conversion, the adjustment mechanism includes the adjustment driving block 13 that is arranged on the backrest side rod 7 and slides axially along the backrest side rod 7, and is arranged on the walls of the two backrest side rods 7 along the described Sliding holes 23 are respectively provided in the axial direction of the backrest side bar 7, and a sliding pin 24 is fixedly connected to the adjustment driving block 13, and the sliding pin 24 passes through the sliding hole 23 and is slidably connected to the on the backrest side rod 7, so that the adjustment drive block 13 can slide in the slide hole 23, and the other end of the backrest adjustment rod 10 is in conflict with the upper end of the adjustment drive block 13, so that the adjustment drive block is pushed upwards. The block 13 can switch the locking block 17 between a first working position and a second working position.

The adjustment mechanism also includes a traction cable 16 arranged in the inner cavity of the backrest side bar 7, the lower end of the traction cable 16 is connected with the sliding pin 24, and at the same time, the backrest The frame 8 is also provided with a traction operation part 11, and the upper end of the traction rope 16 is connected with the traction operation part 11, so that when the angle position of the backrest needs to be adjusted, the traction operation part 11 only needs to be pulled. Pulling rope 16 is pulled upwards so that the slide pin 24 fixed on the lower end of pulling rope 16 is lifted upwards, and slide pin 24 will drive the adjustment driving block 13 fixedly connected with it to move upwards, so that locking block 17 can move from one of the stop slots 15 When the lock block 17 slides along the guide groove 14 to a position opposite to the other limiting groove 15, the traction operation member 11 is released to adjust the driving block 13 under the action of gravity. Down and down, so that the locking block 17 enters the opposite limiting groove 15 .

At the same time, an elastic member 18 is also provided in the cavity of the backrest side bar 7, and one end of the elastic member 18 is connected with the lock block 17 and the other end is connected with the slide pin 24, and the The elastic member 17 is a spring. When the traction cable 16 is pulled up, the elastic member 18 is elongated. When the traction cable 16 is released, the elastic member 18 recovers quickly so that the adjustment driving block 13 slides down quickly.

And the torsion spring 19 is also sheathed on the first rotating shaft 22, one end of the torsion spring 19 is connected with the rear wheel bracket 4 and the other end is connected with the backrest adjusting rod 10, the torsion The spring 19 serves to guide the tendency of the locking block 17 to slide in the guide groove 14 .

The specific operation is as follows: when the angle position of the backrest needs to be adjusted from the state position shown in accompanying drawing 2 to the state position shown in accompanying drawing 4, pull the traction operation member 11 so that the adjustment driving block 13 pushes the backrest adjustment lever 10 upwards, and the locking block 17 will enter the guide groove 14 from the limit groove 15 where the accompanying drawing 2 is located. At this time, the elastic member 18 is stretched under force, and the torsion spring 19 is also forced to control the sliding of the lock block 17 in the guide groove 14. When it slides to When the relative position of the limiting groove 15 shown in accompanying drawing 4 is located, release the traction operation member 11, so that the elastic member 18 is released so that the adjustment driving block 13 slides downward and the locking block enters the limiting groove shown in accompanying drawing 4 15, thereby realizing the angular conversion of the backrest angle position from the state position shown in accompanying drawing 2 to the state position shown in accompanying drawing 4, the adjustment of different angular positions of the backrest position can be realized in the same way.

Claims (10)

1. A child stroller with an adjustable backrest angle, comprising a frame body (1), a front wheel (2) arranged on the front and lower side of the frame body (1), and a front wheel (2) arranged on the frame body (1). (1) the rear wheel (3) below the rear, the vehicle frame body (1) includes a front wheel bracket (5) for placing the front wheel (2), and a rear wheel bracket for placing the rear wheel (3) (4), the seat frame (9) that is arranged between the described front wheel frame (5) and the described rear wheel frame (4), the backrest that the lower end is rotatably connected with the seat frame (9) rack(8), It is characterized in that one end of the backrest adjustment rod (10) is rotatably connected to the part of the front wheel support (5) or the rear wheel support (4) above the seat frame (9) through the first rotating shaft (22), so The backrest adjustment rod (10) is provided with a plurality of limit slots (15) along its length direction, and the backrest frame (8) includes backrest side bars (7) on both sides, and on the backrest side A lock block (17) is provided on the rod (7), and the position limiting groove (15) is used to limit the position of the lock block (17) relative to the backrest adjustment rod (10), and the lock block ( 17) It has a first working position and a second working position. The first working position is that the locking block (17) is located in the limiting groove (15), and the second working position is that the locking block (17) ) break away from the limiting groove (15). 2. The child stroller with adjustable backrest angle according to claim 1, characterized in that: one end of the backrest adjustment rod (10) is rotatably connected to the rear wheel bracket (4). 3. The child stroller with adjustable backrest angle according to claim 1, characterized in that: the backrest frame (8) is provided with a pusher for pushing the backrest adjustment lever (10) so that the lock block (17) An adjustment mechanism that switches between the first working position and the second working position. The adjustment mechanism includes an adjustment mechanism that is arranged on the backrest side rod (7) and slides axially along the backrest side rod (7). The drive block (13), the other end of the backrest adjustment rod (10) is in conflict with the upper end of the adjustment drive block (13). 4. The children's stroller with adjustable backrest angle according to claim 3, characterized in that: the walls of the two backrest side bars (7) along the axial direction of the backrest side bars (7) are respectively A sliding hole (23) is opened, and a sliding pin (24) is fixedly connected to the adjustment driving block (13), and the sliding pin (24) passes through the sliding hole (23) and is slidably connected to the On the backrest side bar (7). 5. The children's stroller with adjustable backrest angle according to claim 4, characterized in that: said adjustment mechanism further comprises a traction cable (16) arranged in the inner cavity of said backrest side bar (7) , the lower end of the traction cable (16) is connected with the slide pin (24). 6. The children's stroller with adjustable backrest angle according to claim 5, characterized in that: said backrest frame (8) is provided with a traction operation member (11), and the upper end of said traction rope (16) The part is connected with the traction operation member (11). 7. The children's stroller with adjustable backrest angle according to claim 5, characterized in that: the inner cavity of the backrest side bar (7) is also provided with an elastic piece (18), and the elastic piece (18) One end is connected with the lock block (17) and the other end is connected with the sliding pin (24). 8. The children's stroller with adjustable backrest angle according to claim 1, characterized in that: said backrest adjustment lever (10) is provided with a guide groove (14) along its length direction, each of said The limiting groove (15) communicates with the guide groove (14). 9. The child stroller with adjustable backrest angle according to claim 8, characterized in that: a torsion spring (19) is sheathed on the first rotating shaft (22), and one end of the torsion spring (19) It is connected with the rear wheel bracket (4) and the other end is connected with the backrest adjustment rod (10). 10. The children's stroller with adjustable backrest angle according to claim 1, characterized in that: said locking block (17) is fixedly arranged on said backrest side bar (7).

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