Backrest folding structure of baby carriage

Abstract

The utility model relates to the technical field of baby products, in particular to a backrest folding structure of a baby carriage, which is characterized in that a seat group is mounted on a seat plate chute group, two ends of a linkage iron sheet are respectively hinged between a backrest and the seat group, a backrest adjusting pull handle is arranged on the back of the seat group, and the backrest adjusting pull handle is connected to a bayonet lock in the seat plate chute group through a steel wire; a sliding groove iron sheet with at least two clamping positions is arranged in the seat plate sliding groove set, and the armrest fixing seats are installed on the left side and the right side of the seat set. The baby carriage has the advantages that the steel wires and the bayonet locks are matched with the clamping positions of the iron sheets of the sliding grooves, so that multi-stage angle adjustment of the backrest is achieved, the sitting state, the semi-lying state and the full-lying state of the baby carriage are achieved, the baby carriage is suitable for infants of different age groups, and the state of the baby carriage can be adjusted according to different travel conditions; when the backrest is adjusted and the seat slides, the center-of-gravity shift of the seat in use is mainly changed, so that the car frame is in a more stable state and is not easy to tip over, and enough sense of safety is brought to a user.

Description

Technical Field

[0001] The utility model relates to the technical field of baby products, and more specifically, to a backrest folding structure of a baby stroller. Background Art

[0002] A baby stroller is a tool vehicle designed to facilitate outdoor activities for babies. It is one of the most favorite means of transportation for babies and a must-have for mothers when taking their babies shopping. Most baby strollers are complicated to fold, and the structural design is not reasonable. They cannot achieve the function of quick folding. Secondly, adjusting the seat angle requires another button or other structure to achieve it, making the operation of the entire baby stroller cumbersome.

[0003] In view of the above-mentioned deficiencies in the folding structure of the baby stroller's backrest, the applicant, adhering to the spirit of research innovation and excellence, combined with production practice, used professional and scientific methods to propose a practical solution, and therefore filed this application. Utility Model Content

[0004] The utility model aims to provide a folding backrest structure of a baby stroller in view of the existing technical status, so as to complete the folding of the seat conveniently and quickly.

[0005] A backrest folding structure for a baby stroller comprises: a backrest, a seat plate slide groove group, a seat group, and an armrest fixing seat. The seat group is installed on the seat plate slide groove group, and the two ends of the linkage iron plates on both sides are respectively hinged between the backrest and the seat group. A backrest adjustment handle is provided on the back of the seat group, and the backrest adjustment handle is connected to a latch pin inside the seat plate slide groove group through a steel wire. A slide groove iron plate with at least two latching positions is provided inside the seat plate slide groove group, and the armrest fixing seat is installed on the left and right sides of the seat group.

[0006] Specifically, the two slide groove iron sheets are distributed and fixed on the seat plate slide groove group, one side of the latch corresponds to the locking position of the slide groove iron sheet, and the other side of the latch is provided with a latch pin positioning spring, one end of the steel wire is connected to the latch, and the other end of the steel wire is connected to the backrest adjustment handle, and the backrest adjustment handle controls the latch to move toward the middle through the steel wire and disengage from the locking position of the slide groove iron sheet, thereby realizing relative sliding of the seat group and the seat plate slide groove group, so that the baby stroller can complete the folding and adjustment of the backrest.

[0007] Specifically, the seat plate slide groove group is provided with a fixed iron plate for fixing the slide groove iron plate inside, and the seat plate slide groove group is installed on the seat fixing seat through the seat plate rotating shaft and bolts. Connecting rods extending obliquely upward are provided on both sides of the seat plate slide groove group, and the connecting rods are hinged to the two outer sides of the bottom of the backrest.

[0008] Specifically, armrest fixing seats are installed in the armrest mounting grooves on both sides of the seat group, and an armrest top block, an armrest pin and an armrest pin return spring are arranged in sequence in the armrest mounting groove. One end of the armrest top block extends to the outside of the armrest mounting groove, and the other end of the armrest top block presses against the armrest pin return spring through the armrest pin. The armrest pin return spring presses against the groove of the armrest fixing seat. The armrest top block, the armrest pin and the armrest pin return spring cooperate with each other to unlock the restriction of the armrest fixing seat and realize the folding of the armrest group.

[0009] Specifically, the two ends of the armrest group are respectively inserted into the armrest fixing seats on both sides. An elastic hook is provided at both ends of the armrest group. The elastic hook corresponds to the hole position of the armrest fixing seat. Pressing the elastic hook disengages it from the hole position, which facilitates the disassembly of the armrest group.

[0010] Specifically, the backrest is provided with a lifting slide, the lifting slide is fixed on the inner side of the backrest, the headrest group is inserted on the top of the lifting slide and moves up and down along the lifting slide, the lumbar support group is installed on the lifting slide, and the height of the headrest group can be adjusted as needed.

[0011] Specifically, the left and right sides of the lumbar support group and the headrest group are both adjustable hinges, and the ceiling group is installed on the left and right sides of the backrest. The adjustable hinge design can adjust the amplitude of both sides of the lumbar support group and the headrest group, which is suitable for children of different body shapes.

[0012] The beneficial effects of the utility model are as follows: the backrest utilizes steel wire and a latch to cooperate with the locking position of the slide groove iron sheet to realize multi-level angle adjustment of the backrest, realizing the sitting state, semi-lying state and fully lying state of the baby stroller, which is suitable for infants and young children of different age groups, and the state of the baby stroller can be adjusted according to different travel situations; the folding mode and the adjustment of the backrest are both achieved through the backrest adjustment handle, and the operation method is simpler, more convenient and quick; while adjusting the backrest, the seat sliding function mainly changes the center of gravity offset when the seat is in use, so that the stroller reaches a more stable state, is not easy to tip over, and gives the user a sufficient sense of security. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 It is an exploded view of the utility model;

[0014] Attached Figure 2 It is a side view of the utility model;

[0015] Attached Figure 3 This is a diagram of the utility model in a flat lying state;

[0016] Attached Figure 4 This is a folding state diagram of the utility model.

[0017] Description and marking: backrest 1, seat slide group 2, seat group 3, armrest fixed seat 4, linkage iron sheet 5, bayonet 6, steel wire 7, slide iron sheet 8, backrest adjustment handle 9, bayonet pin positioning spring 10, seat plate rotation axis 11, fixed iron sheet 12, armrest installation slot 13, armrest top block 14, armrest bayonet 15, armrest bayonet pin return spring 16, lifting slide 17, lumbar support group 18, headrest group 19, armrest group 20. DETAILED DESCRIPTION

[0018] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0019] See also Figures 1 to 4 As shown, a backrest folding structure of a baby stroller includes: a backrest, a seat plate slide groove group, a seat group, and an armrest fixing seat. The seat group is installed on the seat plate slide groove group, and the two ends of the linkage iron plates on both sides are respectively hinged between the backrest and the seat group. A backrest adjustment handle is provided on the back of the seat group, and the backrest adjustment handle is connected to the latch pin inside the seat plate slide groove group through a steel wire. A slide groove iron plate with at least two latching positions is provided inside the seat plate slide groove group, and the armrest fixing seats are installed on the left and right sides of the seat group.

[0020] Installation steps:

[0021] 1. Align the holes of the backrest and the linkage iron sheet and connect them with rivets for later use;

[0022] 2. Install the armrest top block, armrest bayonet and armrest bayonet return spring into the seat plate assembly in sequence, and then insert it into the armrest fixing seat and connect and fix it with rivets for standby use;

[0023] 3. Assemble the seat plate slideway into the fixed iron sheet, then install the slideway iron sheet, align the holes, and connect and fix it with rivets. Then, use the seat plate rotating shaft to pass through the seat plate slideway assembly and the seat plate fixed seat in sequence, insert the iron gasket, and lock and fix it with nuts.

[0024] 4. Install the steel wire into the backrest adjustment handle, and pass the other end of the steel wire through the backrest groove, the seat plate assembly, the spring in sequence, and then install the bayonet into the seat plate assembly, align the holes, and lock it with the screw;

[0025] 5. Align the other end of the linkage iron sheet with the seat plate assembly and fix them with rivets;

[0026] 6. Put the lifting slide into the headrest assembly and the lumbar support assembly respectively, and then put them into the backrest, align the holes and fix them with screws;

[0027] 7. Assemble the ceiling into the backrest bracket and the armrest into the armrest fixing bracket.

[0028] In the above scheme, the two slide slot iron sheets are distributed and fixed on the seat plate slide slot group, one side of the latch corresponds to the latching position of the slide slot iron sheet, the other side of the latch is provided with a latch positioning spring, one end of the steel wire is connected to the latch, and the other end of the steel wire is connected to the backrest adjustment handle. The seat plate slide slot group is provided with a fixed iron sheet for fixing the slide slot iron sheet, the seat plate slide slot group is installed on the seat fixing seat through the seat plate rotating shaft and bolts, and the two sides of the seat plate slide slot group are provided with connecting rods extending obliquely upward, and the connecting rods are hinged to the two outer sides of the bottom of the backrest.

[0029] In the above scheme, armrest mounting grooves on both sides of the seat group are installed with armrest fixing seats, and the armrest mounting grooves are provided with armrest top blocks, armrest pins and armrest pin return springs in sequence. One end of the armrest top block extends to the outside of the armrest mounting groove, and the other end of the armrest top block is supported by the armrest pin return spring through the armrest pin. The armrest pin return spring is supported by the groove of the armrest fixing seat. The two ends of the armrest group are respectively inserted in the armrest fixing seats on both sides, and an elastic hook is provided at both ends of the armrest group, and the elastic hook is correspondingly buckled in the hole position of the armrest fixing seat.

[0030] In the above scheme, the backrest is provided with a lifting slide, the lifting slide is fixed on the inner side of the backrest, the headrest group is inserted on the top of the lifting slide and moves up and down along the lifting slide, the lumbar support group is installed on the lifting slide, the lumbar support group and the headrest group have adjustable hinges on the left and right sides, and the ceiling group is installed on the left and right sides of the backrest.

[0031] Backrest adjustment function of the baby stroller: pull the backrest adjustment handle to disengage the pin from the slide slot iron plate position through the steel wire, then move the backrest forward or backward to adjust to a suitable angle and release the backrest adjustment handle, and the pin returns to the slide slot iron plate position through the spring; while adjusting the backrest angle, the backrest rotates through the fulcrum of the seat plate slide slot group, so that the linked iron plate pushes forward or pulls backward the seat plate group to achieve the linked sliding function.

[0032] The baby stroller's backrest folding function: when folding the backrest, in the sitting state, pull the backrest adjustment handle to release the lock pin and fold it forward. At the same time, the protrusion at the bottom of the backrest rotates to make the top block of the armrest move toward the armrest fixing seat to unlock the armrest pin. At this time, the armrest group automatically folds down. When using, first adjust the backrest to the sitting state, then lift the armrest group to the use position, and the armrest group automatically locks.

[0033] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A backrest folding structure of a baby stroller, comprising: A backrest, a seat plate slide groove group, a seat group, and an armrest fixing seat, characterized in that: the seat group is installed on the seat plate slide groove group, the two ends of the linkage iron plates on both sides are respectively hinged between the backrest and the seat group, a backrest adjustment handle is provided on the back of the seat group, the backrest adjustment handle is connected to the latch pin inside the seat plate slide groove group through a steel wire, a slide groove iron plate with at least two latching positions is provided inside the seat plate slide groove group, and the armrest fixing seat is installed on the left and right sides of the seat group.

2. The folding backrest structure of a baby stroller according to claim 1, characterized in that: The two slide slot iron sheets are distributed and fixed on the seat plate slide slot group, one side of the bayonet corresponds to the position of the slide slot iron sheet, the other side of the bayonet is provided with a bayonet positioning spring, one end of the steel wire is connected to the bayonet, and the other end of the steel wire is connected to the backrest adjustment handle.

3. The folding backrest structure of a baby stroller according to claim 2, characterized in that: The seat plate slide groove group is provided with a fixed iron plate for fixing the slide groove iron plate inside. The seat plate slide groove group is installed on the seat fixing seat through the seat plate rotating shaft and bolts. Connecting rods extending obliquely upward are provided on both sides of the seat plate slide groove group, and the connecting rods are hinged to the two outer sides of the bottom of the backrest.

4. A backrest folding structure for a baby stroller according to claim 1 or 3, characterized in that: The armrest mounting grooves on both sides of the seat group are equipped with armrest fixing seats, and the armrest mounting grooves are provided with armrest top blocks, armrest pins and armrest pin return springs in sequence. One end of the armrest top block extends to the outside of the armrest mounting groove, and the other end of the armrest top block is supported by the armrest pin return spring through the armrest pin, and the armrest pin return spring is supported by the groove of the armrest fixing seat.

5. The backrest folding structure of a baby stroller according to claim 4, characterized in that: The two ends of the armrest group are respectively inserted into the armrest fixing seats on both sides. Both ends of the armrest group are provided with an elastic hook, and the elastic hook is correspondingly buckled in the hole position of the armrest fixing seat.

6. The backrest folding structure of a baby stroller according to claim 1, characterized in that: The backrest is provided with a lifting slide, which is fixed on the inner side of the backrest, the headrest group is inserted on the top of the lifting slide and moves up and down along the lifting slide, and the lumbar support group is installed on the lifting slide.

7. The folding backrest structure of a baby stroller according to claim 6, characterized in that: The waist support group and the headrest group are both adjustable at the left and right sides, and the ceiling group is installed at the left and right sides of the backrest.

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