CN110626415B - Telescopic baby carriage - Google Patents

Abstract

The present invention relates to a telescopic baby stroller, comprising a push rod, a front wheel assembly is arranged at the bottom end of the push rod, a positioning assembly is sleeved on the middle part of the push rod, and the positioning assembly is adjustable in position along the axial direction of the push rod, a seat cushion fixing tube is hinged at the front end of the positioning assembly, a rear foot connecting piece is fixedly installed on the push rod on the upper side of the positioning assembly, a seat cushion and a rear foot tube are respectively hingedly connected at the front and rear sides of the rear foot connecting piece, a rear wheel is installed at the bottom end of the rear foot tube, the upper end of the seat cushion fixing tube is hinged to the front end bottom of the seat cushion, and also comprises a seat frame fixing tube, and the two ends of the seat frame fixing tube are respectively hinged at the rear side of the positioning assembly and the middle part of the rear foot tube. The present invention has the following beneficial effects: the telescopic baby stroller described in the present invention has a simple structure and an elegant and beautiful appearance. It has a reasonable structure and strong stability. It has multifunctionality, a simple structure, simple operation and strong safety. It is easy to use, has a small folding volume and is convenient to carry.

Description

Telescopic baby stroller

Technical Field

The invention relates to a telescopic baby stroller and belongs to the technical field of children's products.

Background Art

Strollers have been widely used. It is indeed much more convenient for people to put their children in strollers for outdoor activities. However, when carrying or storing strollers, they are often faced with the problem that they are large in size and require a large space for storage. In addition, the opening and folding of existing strollers are relatively complicated and the operability is poor. The appearance structure is unreasonable and the stability is poor.

Summary of the invention

In view of the above deficiencies in the prior art, the technical problem to be solved by the present invention is: to provide a telescopic baby stroller to solve one of the above problems.

The telescopic baby stroller described in the present invention is characterized in that it includes a push rod, a front wheel assembly is provided at the bottom end of the push rod, a positioning assembly is sleeved on the middle part of the push rod, and the position of the positioning assembly along the axial direction of the push rod is adjustable, the front end of the positioning assembly is hinged with a seat cushion fixing tube, a rear foot connecting piece is also fixedly installed on the push rod on the upper side of the positioning assembly, the front and rear sides of the rear foot connecting piece are respectively hingedly connected with the seat cushion and the rear foot tube, the bottom end of the rear foot tube is equipped with a rear wheel, the upper end of the seat cushion fixing tube is hinged with the front end bottom of the seat cushion, and it also includes a seat frame fixing tube, the two ends of the seat frame fixing tube are respectively hinged at the rear side of the positioning assembly and the middle part of the rear foot tube.

Preferably, the positioning assembly includes a positioning sleeve sleeved in the middle of the push rod, a left connecting block and a right connecting block are integrally arranged on the left and right sides of the positioning sleeve, the front ends of the left connecting block and the right connecting block are hinged with a folding positioning flip piece, the bottom end of the folding positioning flip piece is integrally provided with a locking positioning pin shaft, the bottom end of the positioning sleeve is provided with a locking hole 1 for the locking positioning pin shaft to pass through, the middle part of the push rod is provided with a locking hole 2 that cooperates with the locking positioning pin shaft, and also includes a fixed return compression spring, the fixed return compression spring is a compression spring, the two ends of the fixed return compression spring are respectively abutted against the inner side wall of the folding positioning flip piece and the outer wall of the positioning sleeve, the connection point of the folding positioning flip piece and the fixed return compression spring is located on the upper side of the hinge point of the folding positioning flip piece and the left connecting block.

Preferably, the positioning assembly also includes two safety buckles installed on the right connecting block. The function of the two safety buckles is mainly to prevent the upper part of the folding positioning flip piece from being accidentally pressed, causing the locking positioning pin shaft to accidentally pop out of the locking hole two. A vehicle collection hook is also installed at the tail end of the positioning sleeve.

Preferably, the push rod is a telescopic push rod, which includes a push rod bottom rod, the bottom end of which is connected to the foot pedal, a push rod is inserted into the upper end of the push rod bottom rod, and the push rod is adjustable along the axial direction of the push rod bottom rod, a push handle is installed at the upper end of the push rod, a retractable adjustment button is provided on the push handle, a positioning sleeve is sleeved on the middle part of the push rod, and a locking hole 2 is opened in the middle part of the push rod to cooperate with the locking positioning pin shaft.

Preferably, a telescopic locking device is installed at the bottom end of the push rod, and a rigid adjusting wire is connected to the telescopic locking device, and the other end of the rigid adjusting wire is connected to the extension and retraction adjusting button. The telescopic locking device includes a folding positioning piece fixed to the bottom end of the push rod, and the upper part of the folding positioning piece is provided with an installation groove for installing an axial push rod positioning flat iron. The axial push rod positioning flat iron is installed in the installation groove, and the axial push rod positioning flat iron can slide along the installation groove, and the fixing positioning spring is a compression spring, and the upper end of the fixing positioning spring is connected to the axial push rod positioning flat iron, and the lower end of the fixing positioning spring abuts against the upper end surface of the folding positioning piece, and the bottom of the axial push rod positioning flat iron is provided with two symmetrical long slot holes, and the two long slot holes are distributed in an "eight" shape, and a radial push rod fixing flat iron is respectively inserted on the outer wall of the folding positioning piece, and the inner end of the radial push rod fixing flat iron is provided with a connecting pin, which is installed in the corresponding long slot hole, and a positioning groove matching with the radial push rod fixing flat iron is provided on the outer wall of the push rod bottom rod, and the axial push rod positioning flat iron is fixedly connected to the rigid adjusting wire.

Preferably, a brake handle is installed on the rear wheel, and a fixed support sleeve is provided at the upper end of the push rod bottom rod.

Preferably, the front wheel assembly comprises a foot pedal fixed to the bottom end of the push rod, and the front wheel is mounted on the lower surface of the foot pedal.

Preferably, a front armrest is detachably mounted on the front end of the seat cushion, and a headrest is mounted on the push handle.

Preferably, a toddler seat is detachably mounted on the seat cushion, the toddler seat comprising a large seat cushion, a head canopy seat mounted on the top of the large seat cushion, a head canopy mounted on the head canopy seat, a front surround mounted on the front side of the large seat cushion, a head canopy seat mounted on the bottom of the large seat cushion, a quick-release positioning piece mounted on the bottom of the head canopy seat, and a connecting sleeve matching the quick-release positioning piece mounted at the center of the upper surface of the seat cushion.

Preferably, a front and rear steering member is provided at the rear of the head canopy seat, and the front and rear steering member controls the disassembly or fixation of the quick-release positioning member and the connecting sleeve on the seat cushion.

Preferably, a positioning fixing piece is fixed on the outer wall of the push rod bottom rod to prevent the rear foot connecting piece from moving up and down.

Preferably, two sets of front wheels and two sets of rear wheels are provided.

Compared with the prior art, the present invention has the following beneficial effects: the telescopic baby stroller described in the present invention has a simple structure and an elegant appearance. It has a reasonable structure and strong stability. It is multifunctional, simple in structure, simple to operate, and highly safe. It is easy to use, small in folding volume, and convenient to carry. The telescopic baby stroller described in the present invention is improved and designed according to the double cross triangle principle. The positioning component slides up and down along the bottom rod of the push rod. It is supported according to the triangle principle. The support point is used to fix the positioning component that slides up and down. A rotating fixed origin, the seat cushion is above, and the rear leg tube is below. The cross axis is based on the cross axis upper and lower triangle principle. When the two triangular structure support points are operated at the same point, the other triangular support point rotates, and this can slide and fold along the support rod. When this sliding point is fixed, the two triangular points can be opened at the same time. When it slides to the bottom, it is a folding structure. After folding, the volume is smaller and storage is more convenient.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

FIG1 is a schematic diagram of the present invention in an open state;

Fig. 2 is a second schematic diagram of the present invention in an open state;

FIG3 is a third schematic diagram of the present invention in an open state;

FIG4 is a schematic diagram of the present invention in a folded state;

FIG5 is a second schematic diagram of the folded state of the present invention;

FIG6 is an enlarged schematic diagram of the structure of the positioning assembly in the open state of the present invention;

FIG7 is a second enlarged schematic diagram of the structure of the positioning assembly in the open state of the present invention;

FIG8 is an enlarged schematic diagram of the structure of the positioning assembly in the folded state of the present invention;

FIG9 is an enlarged schematic diagram of the structure of the positioning assembly in the folded state of the present invention;

FIG10 is an enlarged schematic diagram of the structure of the telescopic locking device;

FIG11 is a second enlarged schematic diagram of the structure of the telescopic locking device;

FIG12 is a schematic diagram of the working state of the telescopic locking device;

FIG13 is a second schematic diagram of the working state of the telescopic locking device;

FIG14 is a third schematic diagram of the working state of the telescopic locking device;

FIG15 is a fourth schematic diagram of the present invention in an open state;

FIG16 is a fifth schematic diagram of the present invention in an open state;

FIG17 is an enlarged schematic diagram of the structure of the child seat;

FIG18 is a second enlarged schematic diagram of the structure of the child seat;

FIG19 is a third enlarged schematic diagram of the structure of the child seat;

In the figure: 1. Folding positioning flip part 2. Two safety buckles 3. Fixed reset compression spring 4. Retracting hook 5. Folding positioning part 6. Radial push rod fixing flat iron 7. Axial push rod positioning flat iron 8. Fixed positioning spring 9. Rigidity adjustment wire 10. Extension and retraction adjustment button 11. Push handle 12. Push rod 13. Push rod bottom rod 14. Head canopy 15. Front armrest 16. Seat 17. Seat cushion fixing tube 18. Rear foot tube 19. Seat frame fixing tube 20. Rear wheel 21. Front wheel 22. Pedal 23. Positioning fixing part 24. Brake handle 25. Rear foot connecting part 26. Large seat cushion 27. Head canopy seat 28. Front and rear steering parts 29. Quick release positioning part 30. Front enclosure 31. Locking positioning pin 32. Positioning sleeve 33. Left connecting block 34. Right connecting block 35. Locking hole 2 36. Fix the support sleeve.

DETAILED DESCRIPTION

The present invention will be further described below in conjunction with the accompanying drawings:

The present invention is further described below by means of specific embodiments, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Embodiment 1

As shown in Figures 1-14, the telescopic baby stroller includes a push rod, a front wheel assembly is provided at the bottom end of the push rod, a positioning assembly is sleeved on the middle part of the push rod, and the positioning assembly is adjustable along the axial direction of the push rod, a seat cushion fixing tube 17 is hinged at the front end of the positioning assembly, a rear foot connecting member 25 is also fixedly installed on the push rod on the upper side of the positioning assembly, the front and rear sides of the rear foot connecting member 25 are respectively hingedly connected to the seat cushion 16 and the rear foot tube 18, a rear wheel 20 is installed at the bottom end of the rear foot tube 18, the upper end of the seat cushion fixing tube 17 is hinged to the front end bottom of the seat cushion 16, and also includes a seat frame fixing tube 19, the two ends of the seat frame fixing tube 19 are respectively hinged to the rear side of the positioning assembly and the middle of the rear foot tube 18.

In this embodiment, the positioning assembly includes a positioning sleeve 32 sleeved on the middle part of the push rod, and the left and right sides of the positioning sleeve 32 are integrally provided with a left connecting block 33 and a right connecting block 34, the front ends of the left connecting block 33 and the right connecting block 34 are hinged with a folding positioning flip member 1, and the bottom end of the folding positioning flip member 1 is integrally provided with a locking positioning pin shaft 31, and the bottom end of the positioning sleeve 32 is provided with a locking hole 1 for the locking positioning pin shaft 31 to pass through, and the middle part of the push rod is provided with a locking hole 2 35 that cooperates with the locking positioning pin shaft 31, and also includes a fixed return compression spring 3, which is a compression spring, and the two ends of the fixed return compression spring 3 are respectively abutted against the inner side wall of the folding positioning flip member 1 and the outer wall of the positioning sleeve 32, and the folding positioning flip member 1 and the fixed return compression spring 3 are respectively abutted. The connection point is located on the upper side of the hinge point between the folding positioning flip member 1 and the left connecting block 33; the positioning assembly also includes two safety buckles 2 installed on the right connecting block 34, and the function of the two safety buckles 2 is mainly to prevent the upper part of the folding positioning flip member 1 from being accidentally pressed, causing the locking positioning pin shaft 31 to accidentally pop out of the locking hole 2, and the tail of the positioning sleeve 32 is also installed with a vehicle collection hook 4; the push rod is a telescopic push rod. The push rod includes a push rod bottom rod 13, and the bottom end of the push rod bottom rod 13 is connected to the foot pedal 22. The upper end of the push rod bottom rod 13 is inserted with a push rod 12, and the push rod 12 is adjustable in the axial direction of the push rod bottom rod 13. A push handle 11 is installed on the upper end of the push rod 12, and a retraction adjustment button 10 is provided on the push handle 11. The positioning sleeve 32 is sleeved from the push rod 12. A locking hole 2 35 cooperating with the locking positioning pin shaft 31 is provided in the middle of the push rod 12; a telescopic locking device is installed at the bottom end of the push rod 12, and a rigid adjustment wire 9 is connected to the telescopic locking device, and the other end of the rigid adjustment wire 9 is connected to the extension and retraction adjustment button 10. The telescopic locking device includes a folding positioning member 5 fixed to the bottom end of the push rod 12, and an installation groove 1 for installing an axial push rod positioning flat iron 7 is provided on the upper part of the folding positioning member 5. The axial push rod positioning flat iron 7 is installed in the installation groove 1, and the axial push rod positioning flat iron 7 can slide along the installation groove 1. The fixed positioning spring 8 is a compression spring, and the upper end of the fixed positioning spring 8 is connected to the axial push rod positioning flat iron 7, and the lower end of the fixed positioning spring 8 abuts against the upper end surface of the folding positioning member 5. Two symmetrical long slots are provided at the bottom of the positioning flat iron 7, and the two long slots are distributed in an "eight" shape. A radial push rod fixing flat iron 6 is inserted on the outer wall of the folding positioning member 5, and a connecting pin is provided at the inner end of the radial push rod fixing flat iron 6. The connecting pin is installed in the corresponding long slot hole. A positioning groove matching with the radial push rod fixing flat iron 6 is provided on the outer wall of the push rod bottom rod 13, and the axial push rod positioning flat iron 7 is fixedly connected with the rigidity adjustment wire 9; a brake handle 24 is installed on the rear wheel 20, and a fixed support sleeve 36 is provided at the upper end of the push rod bottom rod 13; the front wheel assembly includes a foot pedal 22 fixed to the bottom end of the push rod 12, and a front wheel 21 is installed on the lower surface of the foot pedal 22; a front armrest 15 is detachably installed at the front end of the seat cushion 16, and a head canopy 14 is installed on the push handle 11.

Embodiment 2, referring to Figures 15-19, is different from the embodiment in that a toddler seat is detachably mounted on the seat cushion 16, and the toddler seat comprises a large seat cushion 26, a head canopy seat 27 is mounted on the top of the large seat cushion 26, a head canopy 14 is mounted on the head canopy seat 27, a front enclosure 30 is mounted on the front side of the large seat cushion 26, a head canopy seat 27 is mounted on the bottom of the large seat cushion 26, a quick-release positioning piece 29 is mounted on the bottom of the head canopy seat 27, and a connecting sleeve matching the quick-release positioning piece 29 is mounted at the center of the upper surface of the seat cushion 16; a front and rear steering piece 28 is arranged at the rear of the head canopy seat 27, and the front and rear steering piece 28 controls the quick-release positioning piece 29 to be disassembled or fixed to the connecting sleeve on the seat cushion 16; a positioning fixing piece 23 for preventing the rear foot connecting piece 25 from moving up and down is also fixed on the outer wall of the push rod bottom rod 13, so as to facilitate use by toddlers aged about 1-3 years old.

The working principle of the present invention is as follows: when the positioning assembly slides to the bottom of the push rod bottom rod 13, it is in the folding structure. After folding, the volume is smaller and storage is more convenient. When the positioning assembly slides to the middle of the push rod bottom rod 13, the locking positioning pin shaft 31 is inserted into the locking hole 35 and locked, and it is in the open structure. The child can be directly placed on the seat cushion 16. Specifically, first, the second safety buckle 2 is buckled to a certain angle, then the folding positioning flip part 1 is pressed, and the other end of the folding positioning flip part 1 is tilted, and at the same time, the locking positioning pin shaft 31 leaves the corresponding locking hole 2 35 of the push rod bottom rod 13, and then the rear foot tube 18 is pressed hard, and then the positioning assembly moves downward, because the positioning assembly is hinged with the seat frame fixing tube 19 and can rotate, the seat frame fixing tube 19 is hinged with the rear foot tube 18, the rear foot tube 18 is hinged with the rear foot connecting piece 25, the seat cushion fixing tube 17 is hinged with the seat cushion 16, and the seat cushion 16 is hinged with the rear foot connecting piece 25. When the positioning assembly moves, all the connected parts rotate accordingly. When the positioning assembly reaches the bottom, it is in the folding state, and then the extension and retraction adjustment button 10 is pressed, and the radial push rod fixing flat iron 6 moves inward, and then the push rod can be extended and retracted to the bottom end of the push rod bottom rod, and then the whole vehicle is in the folding state. Similarly, the opposite is the opening state, and the steps are not repeated.

The working principle of the positioning component is that after the two safety buckles 2 are pried open by hand, the upper part of the folding positioning flip piece 1 is pressed to overcome the thrust of the fixed reset compression spring 3. At this time, the folding positioning flip piece 1 will tilt up one end, and there is a locking positioning pin 31 at the other end. The locking positioning pin 31 is pulled out from the insertion locking hole 35. At this time, the component can slide up and down. When it reaches the lowest end, the two safety buckles 2 are released; the component slides downward, and when it reaches the lowest end, under the action of the fixed reset compression spring 3, the folding positioning flip piece 1 will tilt up one end, and there is a locking positioning pin 31 at the other end. The locking positioning pin 31 at the other end of the folding positioning flip piece 1 will be inserted into the locking hole 35. At this time, the two safety buckles 2 move to the bottom of the folding positioning flip piece 1, so that the component cannot move up and down, and the other end cannot tilt up, thereby playing a positioning role.

The push rod is a telescopic push rod, and the push rod is in an extension and retraction positioning state. When the extension and retraction adjustment button 10 is pressed by hand, the rigid adjustment wire 9 presses the axial push rod positioning flat iron 7, and the radial push rod fixing flat iron 6 retracts inward. When the radial push rod fixing flat iron 6 retracts to the innermost end, the push rod 12 can slide up and down in the push rod bottom rod 13. The inner wall of the push rod bottom rod 13 is provided with a groove that cooperates with the radial push rod fixing flat iron 6. When it reaches the highest end, the radial push rod fixing flat iron 6 moves to both sides under the action of the fixed positioning spring 8, and is stuck in the groove on the push rod bottom rod 13, and cannot move up and down. At this time, it is in the open state.

The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims (4)

1. A telescopic stroller, characterized in that: comprises a push rod, a front wheel assembly is arranged at the bottom end of the push rod, a positioning assembly is sleeved at the middle part of the push rod, the position of the positioning assembly along the axial direction of the push rod is adjustable, the front end of the positioning assembly is hinged with a seat cushion fixing pipe (17), a rear foot connecting piece (25) is fixedly arranged on the push rod at the upper side of the positioning assembly, the front side and the rear side of the rear foot connecting piece (25) are respectively hinged with a seat cushion (16) and a rear foot pipe (18), the bottom end of the rear foot pipe (18) is provided with a rear wheel (20), the upper end of the seat cushion fixing pipe (17) is hinged with the bottom of the front end of the seat cushion (16), the rear foot connecting piece also comprises a seat frame fixing pipe (19), the two ends of the seat frame fixing pipe (19) are respectively hinged at the rear side of the positioning assembly and the middle part of the rear foot pipe (18), the positioning assembly comprises a positioning sleeve (32) sleeved at the middle part of the push rod, a left connecting block (33) and a right connecting block (34) are integrally arranged at the left side and the right side of the positioning sleeve (32), the front ends of the left connecting block (33) and the right connecting block (34) are hinged with a folding positioning overturning piece (1), the bottom end of the folding positioning overturning piece (1) is integrally provided with a locking positioning pin shaft (31), the bottom end of the positioning sleeve (32) is provided with a first locking hole for the locking positioning pin shaft (31) to pass through, the middle part of the push rod is provided with a second locking hole (35) matched with the locking positioning pin shaft (31), The positioning assembly further comprises a fixed reset pressure spring (3), the fixed reset pressure spring (3) is a compression spring, two ends of the fixed reset pressure spring (3) are respectively abutted against the inner side wall of the folding positioning overturning piece (1) and the outer wall of the positioning sleeve (32), the connection point of the folding positioning overturning piece (1) and the fixed reset pressure spring (3) is positioned at the upper side of the hinging point of the folding positioning overturning piece (1) and the left connecting block (33), the positioning assembly further comprises a second safety catch (2) arranged on the right connecting block (34), the function of the second safety catch (2) is mainly to prevent the upper part of the folding positioning overturning piece (1) from being accidentally pressed, so that the locking positioning pin shaft (31) is accidentally ejected out of the second locking hole, The tail of the positioning sleeve (32) is also provided with a coupler (4), the push rod is a telescopic push rod, the telescopic push rod comprises a push rod bottom rod (13), the bottom end of the push rod bottom rod (13) is connected with a pedal plate (22), the upper end of the push rod bottom rod (13) is inserted with a push rod upper rod (12), the position of the push rod upper rod (12) along the axial direction of the push rod bottom rod (13) is adjustable, the upper end of the push rod upper rod (12) is provided with a push handle (11), the push handle (11) is provided with a telescopic adjusting button (10), the positioning sleeve (32) is sleeved at the middle part of the push rod upper rod (12), the middle part of the push rod upper rod (12) is provided with a locking hole II (35) matched with a locking positioning pin shaft (31), The bottom end of the push rod upper rod (12) is provided with a telescopic locking device, the telescopic locking device is connected with a rigid adjusting iron wire (9), the other end of the rigid adjusting iron wire (9) is connected with a telescopic adjusting button (10), the telescopic locking device comprises a folding positioning piece (5) fixed at the bottom end of the push rod upper rod (12), the upper part of the folding positioning piece (5) is provided with a first mounting groove for mounting an axial push rod positioning flat iron (7), the axial push rod positioning flat iron (7) is mounted in the first mounting groove, the axial push rod positioning flat iron (7) can slide along the first mounting groove, a fixed positioning spring (8) is a compression spring, the upper end of the fixed positioning spring (8) is connected with the axial push rod positioning flat iron (7), The lower extreme butt of fixed location spring (8) is on the up end of folding setting element (5), the bottom of axial push rod location band iron (7) is equipped with two symmetrical slotted holes, two slotted holes are eight characters and distribute, insert respectively on the outer wall of folding setting element (5) and be equipped with a radial push rod fixed band iron (6), the inner of radial push rod fixed band iron (6) is provided with the connecting pin, the connecting pin is installed in corresponding slotted hole, be provided with on the outer wall of push rod sill bar (13) with radial push rod fixed band iron (6) matched with constant head tank, axial push rod location band iron (7) and rigidity regulation iron wire (9) fixed connection.

2. The telescopic stroller of claim 1, wherein: the rear wheel (20) is provided with a brake handle (24), and the upper end of the push rod bottom rod (13) is provided with a fixed support sleeve (36).

3. The telescopic stroller of claim 2, wherein: the front wheel assembly comprises a pedal plate (22) fixed at the bottom end of the push rod upper rod (12), and a front wheel (21) is arranged on the lower surface of the pedal plate (22).

4. A telescopic stroller according to claim 3, wherein: the front end of the seat cushion (16) is detachably provided with a front handrail (15), and the push handle (11) is provided with a head cover (14).