CN216943234U

CN216943234U - Backrest folding structure of baby strolling vehicle

Info

Publication number: CN216943234U
Application number: CN202220679993.XU
Authority: CN
Inventors: 韩福辰
Original assignee: Maixiang Tianjin Technology Co ltd
Current assignee: Maixiang Tianjin Technology Co ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-07-12
Anticipated expiration: 2032-03-21

Abstract

The utility model discloses a folding structure of a backrest of a baby strolling vehicle, which aims to overcome the problem that the backrest of the baby strolling vehicle is easy to clamp hands in the prior art, and comprises a seat, a bolt, an elastic piece and a pull rope, wherein the seat comprises a seat plate and the backrest, the bolt is arranged on the seat in a sliding manner, and if the bolt is inserted on the seat plate and the backrest, the bolt fixedly arranges the backrest on the seat plate; if the bolt is separated from the seat plate or the backrest, the backrest is rotatably arranged on the seat plate, the elastic piece is used for forcing the bolt to be kept inserted on the seat plate and the backrest, and the pull rope is used for driving the bolt to slide on the seat.

Description

Backrest folding structure of baby strolling vehicle

Technical Field

The utility model belongs to the technical field of infant strollers, and particularly relates to a backrest folding structure of a baby strolling vehicle.

Background

The child walking vehicle is also called a child stroller, is a vehicle for carrying small infants to do outdoor activities for adults, and provides great convenience for adults to carry children.

Among the prior art, a child car of sauntering is disclosed, including seat and back, the back articulates on the seat, the fixed first connecting piece that is provided with on the seat, it is provided with the second connecting piece to slide on the back, if the second connecting piece is connected on first connecting piece, the second connecting piece is with the fixed setting of back on the seat, if the second connecting piece breaks away from when first connecting piece, the back can free rotation on the seat, be provided with the elastic component on the second connecting piece, the elastic component forces the second connecting piece to keep connecting on first connecting piece, the user can drive the second connecting piece with the hand, reach the effect of adjusting the angle between back and the seat.

However, the prior art is not perfect, the first connecting piece and the second connecting piece are respectively arranged at the hinged position between the backrest and the seat plate, when a user presses the second connecting piece to adjust the angle of the backrest relative to the seat plate, the problem of hand clamping is easy to occur, and the problem of unsafe use is caused.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects and problems in the prior art, the utility model provides a backrest folding structure of a baby strolling vehicle.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a walk beta structure of child car back, includes:

a seat comprising a seat pan and a backrest;

the bolt is arranged on the seat in a sliding mode, if the bolt is inserted into the seat plate and the backrest, the bolt fixes the backrest on the seat plate, and if the bolt is separated from the seat plate or the backrest, the backrest is rotatably arranged on the seat plate;

the elastic piece is used for forcing the bolt to be kept plugged on the seat plate and the backrest;

and the pull rope is used for driving the bolt to slide on the seat.

Preferably, the seat further comprises a cam, and the pull rope drives the bolt to slide on the seat through the cam.

Preferably, the cam is rotatably provided in the seat, the latch is abutted against the cam, and the rope is wound around the cam.

Preferably, the cam includes a spool portion for winding the cord.

Preferably, the cam includes a hook portion for hooking the pull rope.

Preferably, the cam is also slidably arranged on the seat, and the seat comprises a protruding part which drives the cam to slide on the seat when the cam rotates on the seat; if the cam slides on the seat, the bolt can be driven to be separated from the seat plate or the backrest.

Preferably, the cam comprises a first curved surface portion, the latch has a second curved surface portion adapted to the first curved surface portion, and the latch is disengaged from the seat plate or the backrest if the first curved surface portion and the second curved surface portion are adapted together.

Preferably, the seat is provided with a groove, and the bolt and the cam are respectively arranged in the groove.

Preferably, the seat is provided with a wire groove, and a pull rope is arranged in the wire groove in a penetrating mode.

Preferably, the seat further comprises a button, the button is fixedly arranged on the pull rope, and the button is further arranged on the seat in a sliding mode.

Preferably, the chair also comprises an armrest, the bolt comprises a positioning pin, and if the bolt is inserted on the seat plate and the backrest, the positioning pin is inserted on the armrest; if the bolt is separated from the seat plate or the backrest, the positioning pin is separated from the handrail; if the positioning pin is inserted on the armrest, the armrest and the seat are fixedly arranged together by the positioning pin; if the positioning pin is separated from the armrest, the armrest can be rotatably arranged on the seat.

Compared with the prior art, the utility model has the outstanding and beneficial technical effects that:

(1) in the utility model, a user can drive the bolt to switch between the locked state and the unlocked state by pulling the pull rope, and the hand can be far away from the bolt and the hinged position between the seat plate and the backrest, thereby avoiding the problem that the hand is pinched, therefore, the folding structure of the backrest of the baby strolling vehicle has the advantages of high safety, simple and convenient operation and simple structure.

(2) In the utility model, the pull rope drives the bolt to slide on the seat through the cam, the bolt can work according to expected movement by pulling the pull rope, and the cam mechanism structure formed by the cam, the bolt and the seat has the advantages of simplicity, compactness and more convenient design.

(3) In the utility model, the button is arranged on one side surface of the backrest, and the cam and the bolt are arranged on the other side surface of the backrest, so that a hand pressing on the button is far away from the cam and the bolt, and the hand of a user is further prevented from being pinched.

Drawings

FIG. 1 is a schematic perspective view of the present invention in a lying state;

FIG. 2 is a schematic perspective view of the present invention in a sitting position;

FIG. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is an enlarged schematic view of the utility model at "A";

FIG. 5 is one of the schematic views of the explosive structure of the present invention;

FIG. 6 is a second schematic illustration of the explosive structure of the present invention;

FIG. 7 is one of the structural schematic diagrams of the cam of the present invention;

FIG. 8 is a second schematic view of the cam of the present invention;

FIG. 9 is a schematic structural view of the latch of the present invention;

in the figure: 1-seat plate, 2-backrest, 3-latch, 4-elastic part, 5-pull rope, 6-cam, 7-button, 8-cover plate, 9-armrest, 11-first groove, 12-first key groove, 13-first shaft hole, 14-protrusion, 21-second groove, 22-second key groove, 23-second shaft hole, 24-wire groove, 31-second curved surface part, 32-positioning pin, 33-key block, 34-third shaft hole, 61-wire shaft part, 62-positioning groove, 63-hook part, 64-first curved surface part, 65-recess part, 91-positioning hole, 92-third key groove and 93-rotating shaft part.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings and the specific embodiments.

As shown in fig. 1 to 9, a folding structure of a backrest of a stroller for walking comprises a seat, a latch 3, an elastic member 4 and a pull rope 5.

The seat comprises a seat plate 1 and a backrest 2.

Wherein, the sitting plate 1 refers to an appliance for people to sit on. The backrest 2 refers to an appliance for a person to lean on.

In particular, the backrest 2 is hinged on the seat plate 1. A first shaft hole 13 is formed in the seat plate 1, a second shaft hole 23 is formed in the backrest 2, and a rotating shaft (not shown in the figure) penetrates through the first shaft hole 13 and the second shaft hole 23 and is used for hinging the backrest 2 on the seat plate 1. Specifically, the rotating shaft is a bolt and a nut connected together.

The bolt 3 is arranged on the seat in a sliding manner, and if the bolt 3 is inserted into the seat plate 1 and the backrest 2, the bolt 3 fixes the backrest 2 on the seat plate 1; if the bolt 3 is separated from the seat plate 1 or the backrest 2, the backrest 2 is rotatably arranged on the seat plate 1.

Wherein, if the bolt 3 fixes the backrest 2 on the seat plate 1, the included angle between the backrest 2 and the seat plate 1 is kept unchanged, and a user sitting on the seat plate 1 can stably lean on the backrest 2. If the backrest 2 is rotatably disposed on the seat board 1, the angle between the backrest 2 and the seat board 1 is adjustable, so as to adjust the angle between the backrest 2 and the seat board 1.

Specifically, the user may lie flat or be sitting in the seat. If the user lies on the seat, the angle between the backrest 2 and the seat plate 1 is 170 °. If the user is sitting on the chair, the angle between the backrest 2 and the seat plate 1 is 102 °.

The elastic member 4 is used to force the latch 3 to remain plugged on the seat plate 1 and the backrest 2.

Wherein, the elastic member 4 refers to a member made of an elastic material. The elastic member 4 may generate an elastic force to the plug pin 3, thereby blocking the plug pin 3 from being separated from the seat plate 1 or the backrest 2.

Specifically, the elastic member 4 is a coil spring. One end of the elastic element 4 is abutted against the seat plate 1, and the other end of the elastic element 4 is abutted against the bolt 3. The resilient member 4 is also arranged in the recess.

The pull rope 5 is used for driving the bolt 3 to slide on the seat.

The pull rope 5 is a strip made of soft and tough material, and plays a role in transmission between the bolt 3 and a user.

This folding structure of car back of sauntering still includes cam 6, and stay cord 5 passes through cam 6 and drives bolt 3 and slide on the seat.

Wherein the cam 6 means a member having a curved surface or a curved groove. The cam 6, the bolt 3 and the seat constitute a cam mechanism. If the cam 6 moves on the seat, the cam 6 can drive the bolt 3 to slide on the seat. The cam 6 acts as a transmission between the pull cord 5 and the latch 3 for converting the movement of the pull cord 5 into the movement of the latch 3.

In particular, the cam 6 is rotatably or slidably arranged on the seat. If the cam 6 is slidably arranged on the seat, the cam 6 is a moving cam 6. If the cam 6 is rotatably provided on the seat, the cam 6 is a cylindrical cam 6.

In this embodiment, the cam 6 is rotatably provided in the seat, the latch 3 abuts on the cam 6, and the rope 5 is wound around the cam 6.

In the practical use, the pull rope 5 can be paid off or taken up on the cam 6, and the redundant pull rope 5 can be wound on the cam 6, so that the pull rope 5 is prevented from being clamped at the connecting position between the cam 6 and the backrest 2, and the working reliability of the folding structure of the backrest of the baby strolling vehicle is improved.

Specifically, the cam 6 is rotatably disposed on the backrest 2, and the cam 6 can drive the latch 3 to disengage from the backrest 2.

The cam 6 includes a spool portion 61, and the spool portion 61 is used to wind the rope 5.

Here, the spool portion 61 refers to a circular shaft-shaped portion of the cam 6 for winding the cord 5.

The spool portion 61 is formed with a positioning groove 62, and the pull rope 5 is inserted into the positioning groove 62.

The cord 5 wound around the spool portion 61 is allowed to pass through the positioning groove 62. The positioning groove 62 plays a positioning role for the pulling rope 5, so that the pulling rope 5 is prevented from being separated from the bobbin part 61, and the reliability of the structure is further improved.

The cam 6 comprises a hook part 63, and the hook part 63 is used for hanging the pull rope 5.

Wherein the pull rope 5 can be hung on the hook part 63. If the cam 6 rotates on the seat, the pull rope 5 can be wound or unwound on the cam 6.

Specifically, the hook portion 63 is provided on the spool portion 61, and the hook portion 63 is provided on one side of the positioning groove 62.

The cam 6 is also slidably arranged on the seat, the seat comprises a protruding part 14, and if the cam 6 rotates on the seat, the protruding part 14 can drive the cam 6 to slide on the seat; if the cam 6 slides on the seat, the cam 6 can drive the bolt to separate from the seat plate or the backrest.

Wherein, be formed with the axial region on the seat, the axial region sets up in first recess 11, and cam 6 cover is established on the axial region, and cam 6 can rotate around the axial region, also can slide along the axial of axial region. If the cam 6 slides on the seat, the cam 6 can move closer to or further away from the latch 3. If the cam 6 is close to the bolt 3, the bolt 3 can be driven to be separated from the seat plate 1 or the backrest 2.

Specifically, the protrusion 14 is a portion of the upper surface of the seat plate 1 protruding outward. The cam 6 is formed with a recess 65. The recess 65 is a portion where the upper surface of the cam 6 is recessed inward. The protrusion 14 may pass the recess 65 if the cam 6 is rotated on the seat. If the protrusion 14 is in the recess 65, the protrusion 14 slides on the seat without the cam 6. When the protrusion 14 is separated from the recess 65, the protrusion 14 abuts on the cam 6 and slides the cam 6 on the seat.

In this embodiment, if the user pulls the pulling rope 5, the first curved surface portion 64 of the cam 6 can drive the latch 3 to disengage from the seat plate 1 or the backrest 2, and the protrusion 14 of the seat plate drives the latch to disengage from the seat plate 1 or the backrest 2 through the cam 6, thereby further improving the convenience of operation.

The cam 6 comprises a first curved surface part 64, the bolt 3 is provided with a second curved surface part 31 which can be matched with the first curved surface part 64, and if the first curved surface part 64 and the second curved surface part 31 are matched together, the bolt 3 is separated from the seat plate 1 or the backrest 2.

The first curved surface portion 64 and the second curved surface portion 31 are adaptable, that is, the first curved surface portion 64 completely fits on the second curved surface portion 31 when the first curved surface portion 64 and the second curved surface portion 31 are fitted together. The latch 3 now acts as a resistance to the rotation of the cam 6 on the seat, which resistance relieves the user of the tension required to pull on the pull cord 5 to rotate the backrest 2 on the seat plate 1 when the user pulls on the pull cord 5.

Specifically, the first curved surface is an outwardly convex surface on the cam 6. The second curved surface is an inwardly recessed surface on the pin 3.

The overall structure of the first curved surface is axisymmetric, and the overall structure of the second curved surface is axisymmetric, so that the cam 6 and the bolt 3 can be positively arranged on one side of the seat, and the cam 6 and the bolt 3 can be reversely arranged on the other side of the seat, thereby improving the universality of parts.

The first curved surface part 64 is arranged on the inner side of the line shaft part 61, when a user pulls the pull rope 5, the power arm of the pull rope 5 to the cam 6 is larger than the resistance arm of the bolt 3 to the cam 6, so that the effect of a labor-saving lever is formed, and the bolt 3 can be driven by the user to be separated from the seat plate 1 or the backrest 2 conveniently.

The seat is provided with a groove, and the bolt 3 and the cam 6 are respectively arranged in the groove.

Wherein, bolt 3 and cam 6 set up in the recess, and the seat plays airtight protection's effect to bolt 3 and cam 6, has improved the reliability and the security of work.

Specifically, first recess 11 has been seted up on seat 1, second recess 21 has been seted up on back 2, if back 2 installs on seat 1, first recess 11 and the cooperation of second recess 21 form the recess to be convenient for bolt 3 and cam 6 to install in the recess.

The inner side of the first groove 11 is provided with a first key groove 12, the inner side of the second groove 21 is provided with a second key groove 22, and the plug pin 3 can be inserted into the first key groove 12 and the second key groove 22.

Wherein, the insertion of the plug pin 3 on the seat plate 1 and the backrest 2 means that the plug pin 3 is inserted in the first key slot 12 and the second key slot 22. The bolt 3 is disengaged from the seat plate 1 or the backrest 2, which means that the bolt 3 is disengaged from the first key groove 12 or the second key groove 22.

The seat is provided with a wire slot 24, and the pull rope 5 is arranged in the wire slot 24.

The wire groove 24 is a strip-shaped groove formed in the seat, and the pull rope 5 can move along the wire groove 24.

The seat also comprises a cover plate 8, and the cover plate 8 covers the wire groove 24.

Wherein, apron 8 is used for avoiding the stay cord 5 to break away from wire casing 24, also is convenient for through dismouting apron 8, and the stay cord 5 of being convenient for is placed in wire casing 24.

Specifically, the wire groove 24 is opened on the backrest 2, and one end of the wire groove 24 is communicated with the second groove 21.

This folding structure of car back of sauntering still includes button 7, and button 7 is fixed to be set up on stay cord 5, and button 7 still sets up on the seat slidable.

In actual use, a user can pull the pull rope 5 by driving the button 7, so that the pull rope 5 in the wire slot 24 is conveniently driven.

Specifically, the button 7 is slidably disposed on one side of the backrest 2, the cam 6 and the bolt 3 are respectively disposed on the other side of the backrest 2, a mounting hole is disposed on the cover plate 8, the button 7 penetrates through the mounting hole, and the cover plate 8 is exposed outside through the mounting hole.

The folding structure of the baby walker backrest 2 further comprises an armrest 9, the bolt 3 comprises a positioning pin 32, and if the bolt 3 slides on the seat, the positioning pin 32 can be inserted on the armrest 9 or separated from the armrest 9; if the positioning pin 32 is inserted into the armrest 9, the positioning pin 32 fixes the armrest 9 and the seat together; if the positioning pin 32 is disengaged from the armrest 9, the armrest 9 is rotatably provided on the seat.

Here, the armrest 9 refers to a member for a person to grasp. In actual use, the user can hold the armrest 9 with his or her hand while sitting or lying on the seat. The positioning pin 32 refers to a portion of the plug pin 3 for locking the armrest 9. If the armrest 9 is rotated on the seat, the armrest 9 may be unfolded on the seat board 1 or folded on the seat board 1.

Specifically, if the positioning pin 32 is inserted into the armrest 9, the latch 3 is inserted into the seat plate 1 and the backrest 2. If the positioning pin 32 is disengaged from the armrest 9, the latch 3 is disengaged from the seat plate 1 or the backrest 2. Thus, if the armrest 9 is freely rotatable on the seat, the backrest 2 is freely rotatable on the seat plate 1, and the armrest 9 and the backrest 2 can be folded together on the seat plate 1. If the armrest 9 is fixedly arranged on the seat, the backrest 2 is also fixedly arranged on the seat plate 1.

The positioning hole 91 is formed in the handrail 9, the positioning hole 91 is matched with the positioning pin 32, and the connection firmness of the positioning pin 32 and the handrail 9 is improved.

Specifically, the circumferential direction of the positioning pin 32 is formed with the key blocks 33, the circumferential direction of the positioning hole 91 is formed with the third key grooves 92, the number of the key blocks 33 is at least two, the two or more key blocks 33 are uniformly arranged in the circumferential direction of the positioning pin 32, the number of the third key grooves 92 is at least two, the two or more third key grooves 92 are uniformly arranged in the circumferential direction of the positioning hole 91, the third key grooves 92 correspond to the key blocks 33 one by one, and the key blocks 33 are inserted into the corresponding third key grooves 92.

In practical use, if the armrest 9 is rotated by a certain angle on the backrest 2, the positioning pin 32 can be inserted into the positioning hole 91, so that the armrest 9 can be fixedly disposed on the backrest 2 at a plurality of unfolding angles. The certain angle is an angle between adjacent key blocks 33.

The bolt 3 comprises a third shaft hole 34, the armrest 9 comprises a rotating shaft part 61, the rotating shaft part 61 is rotatably arranged in the third shaft hole 34, and the bolt 3 limits the rotation of the armrest 9, so that the armrest 9 can be rotatably arranged on the seat.

Specifically, the positioning pin 32 and the key block 33 are disposed in the third shaft hole 34. The armrest 9 is slidable in the axial direction of the third shaft hole 34. When the plug pin 3 slides on the seat, the armrest 9 slides in the axial direction of the third shaft hole 34, so that the positioning pin 32 can be disengaged from the positioning hole 91.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The utility model provides a walk beta structure of baby's car back which characterized in that includes:

a seat comprising a seat plate (1) and a backrest (2);

the bolt (3) is arranged on the seat in a sliding mode, if the bolt (3) is inserted into the seat plate (1) and the backrest (2), the backrest (2) is fixedly arranged on the seat plate (1) through the bolt (3), and if the bolt (3) is separated from the seat plate (1) or the backrest (2), the backrest (2) is rotatably arranged on the seat plate (1);

the elastic piece (4) is used for forcing the bolt (3) to be kept plugged on the seat plate (1) and the backrest (2);

and the pull rope (5) is used for driving the bolt (3) to slide on the seat.

2. The folding structure of the backrest of a strolling baby car as claimed in claim 1, further comprising a cam (6), wherein the pull rope (5) drives the bolt (3) to slide on the seat through the cam (6).

3. A folding structure for walking baby car backrest as claimed in claim 2, characterized in that said cam (6) is rotatably mounted on the seat, the latch (3) abuts against the cam (6), and the pull rope (5) is wound around the cam (6).

4. A folding structure for strolling a baby car backrest as claimed in claim 3, wherein said cam (6) comprises a spool portion (61), the spool portion (61) being used to wind the pull cord (5).

5. A folding structure for walking baby carriage backrest as claimed in claim 3 or 4, characterized in that said cam (6) is also slidably arranged on the seat, the seat comprises a protrusion (14) which drives the cam (6) to slide on the seat if the cam (6) rotates on the seat; if the cam (6) slides on the seat, the bolt (3) can be driven to separate from the seat plate (1) or the backrest (2).

6. A folding structure for strolling a baby car backrest as claimed in claim 2 or 3 or 4, wherein said cam (6) comprises a first curved portion (64), and the latch (3) has a second curved portion (31) adapted to the first curved portion (64), and the latch (3) is disengaged from the seat plate (1) or the backrest (2) if the first curved portion (64) and the second curved portion (31) are adapted together.

7. A folding structure for strolling a baby car backrest as claimed in claim 2, 3 or 4 wherein the seat is provided with a groove and the latch (3) and the cam (6) are respectively arranged in the groove.

8. A foldable structure for strolling a baby stroller backrest according to claim 1, wherein the seat is provided with a wire slot (24), and the wire slot (24) is used for passing the pull rope (5).

9. A folding structure for walking baby carriage backrest according to claim 1 or 8, characterized by further comprising a button (7), wherein the button (7) is fixedly arranged on the pull rope (5), and the button (7) is also slidably arranged on the seat.

10. A folding structure for walking baby car backrest as claimed in claim 1, further comprising a handrail (9), wherein the bolt (3) comprises a positioning pin (32), and if the bolt (3) is inserted on the seat plate (1) and the backrest (2), the positioning pin (32) is inserted on the handrail (9); if the bolt (3) is separated from the seat plate (1) or the backrest (2), the positioning pin (32) is separated from the handrail (9); if the positioning pin (32) is inserted on the armrest (9), the positioning pin (32) fixes the armrest (9) and the seat together; when the positioning pin (32) is separated from the armrest (9), the armrest (9) can be rotatably arranged on the seat.