A new type of luggage baby carriage

Abstract

The utility model discloses a novel luggage baby carriage, including hand push rod, folding cover, seat, rear wheel support pole, luggage body, hand push rod can telescopic, folding cover is equipped with on both sides pole of hand push rod, and folding cover includes first rotation part and second rotation part, seat includes seat board and backrest, and seat board both sides rotatable setting in the backrest bottom end inboard, and backrest bottom end outboard rotatable setting in the first rotation part inboard, the top of rear wheel support pole is equipped with the third rotation part, and the third rotation part outboard rotatable setting in the second rotation part inboard, be equipped with the connecting pipe between two third rotation parts, the second rotation part outboard is equipped with first button, and the gear between second rotation part and third rotation part is equipped with, and first button and gear outer end surface abut, and the spring between gear and third rotation part is equipped with, and gear can simultaneously joint second rotation part and third rotation part, or remove second rotation part and only with third rotation part joint, the luggage body detachable installation between two rear wheel support poles.

Description

Technical Field

[0001] This utility model relates to the technical field of baby strollers, specifically to a new type of bag-shaped baby stroller. Background Technology

[0002] In modern life, the convenience of baby travel products is crucial. Traditional strollers have many limitations: First, their folded size is too large to meet airline carry-on baggage size requirements, forcing parents to check them in, increasing the risk of lost luggage and wasting time; second, they are single-function, only providing seating for children and lacking effective luggage storage design, requiring parents to carry additional backpacks or suitcases, increasing the burden of travel; third, existing strollers lack sufficient adjustment functions, with non-adjustable backrest angles or limited adjustment levels, failing to meet the diverse needs of infants and toddlers for lying down and resting, and the fixed handle height cannot accommodate parents of different heights; fourth, folding is complicated and time-consuming, and the folded stroller takes up a lot of space, making it inconvenient for daily carrying and storage. As people travel more frequently, the demand for multifunctional, portable, and practical strollers is becoming increasingly urgent, necessitating the design of a new type of stroller that can solve the above problems. Utility Model Content

[0003] The technical problem to be solved by this utility model is to propose a new type of bag-shaped baby stroller in view of the above-mentioned shortcomings of the prior art.

[0004] To achieve its purpose, this utility model adopts the following technical solution: A new type of luggage stroller includes: A push rod, which is telescopic; A folding sleeve is fitted onto both sides of the push rod, and the folding sleeve includes a first rotating part and a second rotating part; The seat includes a seat plate and a backrest, the two sides of the seat plate are rotatably disposed on the inner side of the bottom end of the backrest, and the outer side of the bottom end of the backrest is rotatably disposed on the inner side of the first rotating part. The rear wheel support rod has a third rotating part at its top, and the outer side of the third rotating part is rotatably disposed inside the second rotating part; a connecting tube is inserted between the two third rotating parts; a first button is provided on the outer side of the second rotating part; a gear is provided between the second rotating part and the third rotating part; the pressing end of the first button abuts against the outer end face of the gear; a spring is provided between the inner end face of the gear and the third rotating part; the gear can simultaneously engage the second rotating part and the third rotating part, or be removed from the second rotating part and only engage with the third rotating part. The bag body is detachably mounted between the two rear wheel support rods.

[0005] Preferably, the top two ends of the bag body are provided with mounting blocks, and a second button is pressed in the mounting groove provided on the mounting block; the lower end of the third rotating part is provided with a first slot, and the top of the second button can enter or move out of the first slot.

[0006] Preferably, the bottom sides of the bag body are provided with positioning protrusions, the bottom end of the rear wheel support rod is connected to the rear wheel mounting bracket, the top of the rear wheel mounting bracket is provided with a second slot, and the positioning protrusions can enter or move out of the second slot.

[0007] Preferably, the push rod includes a first sleeve, a second sleeve nested inside the first sleeve, a third sleeve nested inside the second sleeve, a fourth sleeve nested inside the third sleeve, and a horizontal tube connected to the top of the fourth sleeve. The end of the fourth sleeve located inside the third sleeve is provided with a first unlocking component, and the end of the third sleeve located inside the second sleeve and the end of the second sleeve located inside the first sleeve are both provided with a second unlocking component; A third button is provided on the inner side of the horizontal tube, and the two ends of the third button are connected to the first unlocking component through the first pull rope.

[0008] Preferably, the first unlocking component includes a first top sleeve and a first buckle. The first top sleeve is fitted onto the fourth sleeve, the first buckle is located inside the first top sleeve, a spring is provided between the first buckle and the first top sleeve, the first pull rope is connected to the first buckle, the third sleeve is provided with a first locking hole, and the first buckle can enter the first locking hole.

[0009] Preferably, the second unlocking component includes a second top sleeve, a top block, and a second slider. The second top sleeve is respectively fitted onto the third sleeve and the second sleeve. The second slider is located inside the second top sleeve. The inclined end of the top block cooperates with the inclined surfaces on both sides of the second slider. A spring is provided between one end of the second slider and the second top sleeve, and a second latch is provided at the other end. The second sleeve and the first sleeve are respectively provided with a second lock hole and a third lock hole, and the second latch can enter and exit the second lock hole or the third lock hole.

[0010] Preferably, a fourth button is pressable in the button slot at the upper end of the backrest, and pull cord slots are provided on both sides below the button slot, with the fourth button connected to a second pull cord in the pull cord slot; The backrest has a fourth rotating part on both sides at the bottom end. A pull block is provided in the mounting groove above the fourth rotating part. The end of the second pull rope away from the fourth button is connected to the pull block. A locking block is provided at the lower end of the pull block. The upper edge of the fourth rotating part is provided with a third slot, and the upper edge of the first rotating part is provided with three fourth slots; the card block can be simultaneously inserted into or removed from the third and fourth slots.

[0011] Preferably, guardrails are rotatably provided on both sides of the seat plate.

[0012] Preferably, the seat plate has a fifth rotating part on both sides of the rear end, an arc-shaped protrusion on the outer surface of the fifth rotating part, an annular protrusion on the inner ring of the fourth rotating part, the outer surface of the arc-shaped protrusion is in contact with the annular protrusion, and an arc-shaped recess is provided at the edge of the annular protrusion. The fifth rotating part is connected to the sixth rotating part through a long groove, and the seventh rotating parts at both ends of the guardrail are located inside the sixth rotating part; a third slider is provided between the fifth rotating part and the first rotating part, and a sloping slider is provided at one end of the bottom of the third slider; a retaining strip with a sloping protrusion is installed in the long groove, and the sloping slider is slidably disposed in the sloping protrusion. The end of the inclined slider can enter and exit the fifth slot of the sixth rotating part and the sixth slot of the seventh rotating part.

[0013] Preferably, footrests are provided on both sides of the bottom of the seat plate, and the footrests can rotate around the pivot on the seat plate.

[0014] The beneficial effects of this utility model are: This application provides a novel baby stroller with a case, which achieves rapid folding to a standard size and ensures a secure connection of the case through a multi-stage rotating mechanism and modular case installation design. When folding is required, pressing the first button disengages the gear from the internal groove of the second rotating part, allowing the rear wheel support rod to rotate inward around the second rotating part; the seat backrest folds upward via the first rotating part, and the overall structure flattens after the push rod retracts; the case body is quickly attached and detached from the rear wheel support rod via a slot, and can be used as an independent case during transportation; the push rod is adjustable to accommodate different user heights.

[0015] Therefore, this application can flexibly switch between a suitcase storage form and a stroller unfolded form, meeting the dual needs of children's riding and travel transportation. It achieves a three-dimensional folding form that conforms to aviation dimensions, solving the problem that traditional strollers cannot be taken on board. The detachable bag design expands the storage space while maintaining the functionality of the stroller, reducing the need for users to carry extra luggage. The combination structure of multi-level sleeves and elastic buckles simplifies the height adjustment operation, meeting the usage needs of users of different heights. Attached Figure Description

[0016] For ease of explanation, this utility model is described in detail below with reference to the specific embodiments and accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a schematic diagram of the structure of the rear wheel support rod and the bag body in this embodiment; Figure 3 This is a schematic diagram showing the connection between the bag body and the rear wheel support rod in this embodiment; Figure 4 This is a schematic diagram of the internal structure of the bag body in this embodiment; Figure 5 This is a schematic diagram of the push rod structure in this embodiment; Figure 6 This is a schematic diagram of the internal structure of the fourth sleeve and the horizontal tube in this embodiment; Figure 7 This is a schematic diagram of the first unlocking component structure in this embodiment; Figure 8 This is a schematic diagram of the second unlocking component structure in this embodiment; Figure 9 This is a schematic diagram of the seat structure in this embodiment; Figure 10 This is a schematic diagram of the connection between the backrest and the seat in this embodiment; Figure 11 This is a schematic diagram of the folding sleeve in this embodiment; Figure 12 This is a schematic diagram of the base plate structure in this embodiment; Figure 13 This is a schematic diagram of the guardrail structure in this embodiment; Figure 14 This is a schematic diagram of the backrest structure in this embodiment.

[0018] In the picture: 100 - Push rod; 110 - First sleeve; 111 - Third lock hole; 120 - Second sleeve; 121 - Second lock hole; 130 - Third sleeve; 131 - First lock hole; 140 - Fourth sleeve; 150 - Horizontal tube; 151 - Third button; 152 - First pull rope; 160 - First unlocking component; 161 - First top sleeve; 162 - First latch; 170 - Second unlocking component; 171 - Second top sleeve; 172 - Top block; 173 - Second slider; 1731 - Second latch; 200 - Folding sleeve; 210 - First rotating part; 211 - Fourth slot; 220 - Second rotating part; 300 - Seat; 310 - Seat plate; 311 - Fifth rotating part; 3111 - Arc-shaped raised edge; 312 - Long groove; 313 - Sixth rotating part; 3131 - Fifth slot; 314 - Third slider; 3141 - Sloping slider; 315 - Locking strip; 3151 - Sloping protrusion; 316 - Footrest; 320 - Backrest; 321 - Button groove; 322 - Fourth button; 323 - Pull cord groove; 324 - Fourth rotating part; 3241 - Third slot; 3242 - Annular raised edge; 325 - Pull block; 3251 - Locking block; 330 - Guardrail; 331 - Seventh rotating part; 3311 - Sixth slot; 400 - Rear wheel support rod; 410 - Third rotating part; 411 - First slot; 420 - Connecting pipe; 430 - First button; 440 - Gear; 450 - Rear wheel mounting bracket; 451 - Second slot; 500 - Bag body; 510 - Mounting block; 520 - Second button; 530 - Positioning protrusion. Detailed Implementation

[0019] The following are specific embodiments of the present invention described in conjunction with the accompanying drawings, further illustrating the technical solution of the present invention. However, the present invention is not limited to these embodiments. Specific details such as particular configurations and components are provided in the following description merely to aid in a comprehensive understanding of the embodiments of the present invention. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0021] like Figure 1-14 As shown, this embodiment provides a novel bag-shaped stroller, including a retractable push rod 100, a folding sleeve 200, a seat 300, a rear wheel support rod 400, and a bag body 500. The push rod 100 has folding sleeves 200 fitted on both sides. Each folding sleeve 200 has a first rotating part 210 and a second rotating part 220. The bottom outer side of the seat back 320 is rotatably connected to the inner side of the first rotating part 210. The third rotating part 410 at the top of the rear wheel support rod 400 is rotatably connected to the inner side of the second rotating part 220. A [missing information - likely a device or component] is inserted between the two third rotating parts 410. A connecting tube 420 with a spring button; a first button 430 is provided on the outside of the second rotating part 220; a gear 440 is provided between the second rotating part 220 and the third rotating part 410; the pressing end of the first button 430 abuts against the outer end face of the gear 440; a spring is provided between the inner end face of the gear 440 and the third rotating part 410; the gear 440 can simultaneously engage the second rotating part 220 and the third rotating part 410, or be removed from the second rotating part 220 and only engage with the third rotating part 410; the bag body 500 is detachably installed between the rear wheel support rods 400.

[0022] Specifically, when folding is required, pressing the first button 430 causes the gear 440 to disengage from the second rotating part 220 and fully enter the third rotating part 410, allowing the rear wheel support rod 400 to rotate inward around the second rotating part 220; the seat back 320 of the seat 300 folds upward through the first rotating part 210, and the push rod 100 retracts to form a flattened overall structure; the bag body 500 can be quickly attached and detached from the rear wheel support rod 400 via a slot, and can be used as an independent bag during transport; in the unfolded state, the spring button automatically locks the angle of the rear wheel support rod 400, and the push rod 100 can be extended and retracted to adapt to different user heights.

[0023] Through the above technical solution, this application can flexibly switch between a suitcase storage mode and a stroller unfolded mode, meeting the dual needs of children's riding and transportation. It achieves a three-dimensional folding form that conforms to aviation dimensions, solving the problem that traditional strollers cannot be taken on airplanes. The detachable bag design expands storage space while maintaining the functionality of the stroller, reducing the need for users to carry extra luggage. The combination structure of multi-level sleeves and elastic buckles simplifies the height adjustment operation, meeting the usage needs of users of different heights.

[0024] This application further proposes that the top of the bag body 500 is provided with mounting blocks 510 at both ends, and a second button 520 is pressed into the mounting groove provided on the mounting block 510; the lower end of the third rotating part 410 is provided with a first slot 411, and the top of the second button 520 can enter or move out of the first slot 411. The bottom of the bag body 500 is provided with positioning protrusions 530 on both sides, and the bottom end of the rear wheel support rod 400 is connected to a rear wheel mounting bracket 450. The top of the rear wheel mounting bracket 450 is provided with a second slot 451, and the positioning protrusions 530 can enter or move out of the second slot 451.

[0025] Specifically, when the bag body 500 needs to be installed, the top of the second button 520 engages with the first slot 411. For disassembly, pressing down on the second button 520 disengages its top from the first slot 411, allowing the bag body 500 to be lifted and separated. The bag body 500 is secured both laterally and longitudinally by positioning protrusions 530 on both sides of its bottom, which are then inserted into the second slot 451 on the top of the rear wheel mounting bracket 450. The engagement of the positioning protrusions 530 with the second slot 451 restricts the lateral sliding tendency of the bag body 500 during movement.

[0026] Through the above technical solution, this application can effectively prevent the bag body 500 from shifting laterally or longitudinally during the movement of the stroller, ensuring that the bag remains stable when carrying items. The detachable design of the positioning protrusion 530 and the second slot 451 makes the bag easy to disassemble, while maintaining the reliability and reusability of the connection structure.

[0027] This application further proposes a push rod 100 including a first sleeve 110, a second sleeve 120 nested within the first sleeve 110, a third sleeve 130 nested within the second sleeve 120, a fourth sleeve 140 nested within the third sleeve 130, and a horizontal tube 150 connected to the top of the fourth sleeve 140; the end of the fourth sleeve 140 located within the third sleeve 130 is provided with a first unlocking component 160, and the ends of the third sleeve 130 located within the second sleeve 120 and the ends of the second sleeve 120 located within the first sleeve 110 are both provided with second unlocking components 170; a third button 151 is provided inside the horizontal tube 150, and the two ends of the third button 151 are connected to the first unlocking component 160 through a first pull rope 152.

[0028] Specifically, when the length of the push rod 100 needs to be adjusted, pressing the third button 151 on the inside of the horizontal tube 150 transmits pulling force to the first unlocking component 160 through the first pull rope 152, causing the latch between the fourth sleeve 140 and the third sleeve 130 to disengage from the lock hole. Simultaneously, the second unlocking component 170 triggers the inclined slider action through the relative sliding between adjacent sleeves, causing the latches between the third sleeve 130 and the second sleeve 120, and between the second sleeve 120 and the first sleeve 110, to sequentially disengage from the lock hole, achieving synchronous unlocking of multiple sleeves. At this time, each sleeve can slide freely along the axial direction, and the extension length of the sleeves can be adjusted to suit different usage needs. When folded for storage, each sleeve can be gradually retracted to a minimum overlap state in the unlocked state, and the nested structure significantly reduces the overall storage volume.

[0029] This application further proposes a first unlocking component 160 including a first top sleeve 161 and a first latch 162. The first top sleeve 161 is fitted onto the fourth sleeve 140, and the first latch 162 is located inside the first top sleeve 161. A spring is provided between the first latch 162 and the first top sleeve 161. A first pull rope 152 is connected to the first latch 162. The third sleeve 130 is provided with a first locking hole 131, and the first latch 162 can enter and exit the first locking hole 131.

[0030] The second unlocking component 170 includes a second top sleeve 171, a top block 172, and a second slider 173. The second top sleeve 171 is respectively fitted onto the third sleeve 130 and the second sleeve 120. The second slider 173 is located inside the second top sleeve 171. The inclined end of the top block 172 cooperates with the inclined surfaces on both sides of the second slider 173. A spring is provided between one end of the second slider 173 and the second top sleeve 171, and a second latch 1731 is provided at the other end. The second sleeve 120 and the first sleeve 110 are respectively provided with a second locking hole 121 and a third locking hole 111. The second latch 1731 can enter and exit the second locking hole 121 or the third locking hole 111.

[0031] Specifically, when the third button 151 is pressed, the first pull cord 152 causes the first latch 162 to disengage from the first lock hole 131 of the third sleeve 130. At this time, the fourth sleeve 140 can freely extend and retract. After the third button 151 is released, the spring pushes the first latch 162 to reset, and the first latch 162 re-enters the first lock hole 131 to complete the locking. When the fourth sleeve 140 retracts within the third sleeve 130, the first top sleeve 161 pushes the top block 172 inside the second top sleeve 171. The inclined end of the top block 172 pushes the second slider 173 to move laterally, compressing the spring and causing the second latch 1731 to exit from the second lock hole 121, thereby unlocking the third sleeve 130 and allowing it to extend and retract within the second sleeve 120. The principle is the same when the second sleeve 120 retracts as with the third sleeve 130. After the external force is released, the spring pushes the second slider 173 to reset, causing the second latch 1731 to re-enter the lock hole to complete the locking. Through the above technical solution, this application achieves one-click unlocking of multi-stage sleeves, significantly simplifying the folding operation process. The rigid fit between the latch and the locking hole ensures the stability of the frame in the unfolded state and prevents accidental unlocking when not in operation.

[0032] This application further proposes that a fourth button 322 is pressed into the button groove 321 at the upper end of the backrest 320, and pull cord grooves 323 are provided on both sides below the button groove 321. The fourth button 322 is connected to the second pull cord in the pull cord groove 323. A fourth rotating part 324 is provided on both sides at the bottom end of the backrest 320. A pull block 325 is provided in the mounting groove above the fourth rotating part 324. The end of the second pull cord away from the fourth button 322 is connected to the pull block 325. A locking block 3251 is provided at the lower end of the pull block 325. A third locking groove 3241 is provided at the upper edge of the fourth rotating part 324, and three fourth locking grooves 211 are provided at the upper edge of the first rotating part 210. The locking block 3251 can be simultaneously locked into or removed from the third locking groove 3241 and the fourth locking grooves 211.

[0033] Specifically, when the backrest 320 angle needs to be adjusted, the fourth button 322 is pressed downwards, pulling the pull block 325 upwards via the second pull cord. The pull block 325 drives the locking block 3251 to rise simultaneously, completely disengaging it from the third locking slot 3241 of the fourth rotating part 324 and the fourth locking slot 211 of the first rotating part 210. At this time, the backrest 320 can rotate freely around the fourth rotating part 324. When the backrest 320 rotates to the target angle, the fourth button 322 is released, and the spring mechanism pushes the locking block 3251 downwards again. The tip of the locking block 3251 simultaneously engages the third locking slot 3241 of the fourth rotating part 324 at the new position and the fourth locking slot 211 of the corresponding position of the first rotating part 210, forming a double mechanical lock. The three fourth locking slots 211 are distributed circumferentially along the rotating part, corresponding to the three adjustment positions of the backrest 320 tilt angle. For example, 100° sitting position, 145° semi-reclining position, and 180° fully reclining position. The fourth rotating part 324 and the first rotating part 210 are coaxially designed to ensure that the locking block 3251 is always aligned with the slot position during rotation.

[0034] Through the above technical solution, this application achieves a three-position angle adjustment of the backrest 320 with single-hand operation, and the double locking structure effectively prevents accidental unlocking during use. The cooperative design of the card block 3251 and the double card slot improves the adjustment accuracy, and the three positions can meet the different usage needs of infants and young children, such as sitting, semi-reclining, and lying flat. The mechanical linkage mechanism simplifies the operation steps, avoids the complexity of traditional multi-button adjustment, and significantly improves the overall structural reliability.

[0035] This application further proposes that guardrails 330 are rotatably provided on both sides of the seat plate 310. Fifth rotating parts 311 are provided on both sides of the rear end of the seat plate 310. An arc-shaped protrusion 3111 is provided on the outer surface of the fifth rotating part 311. An annular protrusion 3242 is provided on the inner ring of the fourth rotating part 324. The outer surface of the arc-shaped protrusion 3111 is in contact with the annular protrusion 3242, and an arc-shaped recess is provided at the edge of the annular protrusion 3242. The fifth rotating part 311 is connected to a sixth rotating part 313 via a long slot 312. The seventh rotating parts 331 at both ends of the guardrails 330 are located at the sixth rotating part. Inside part 313; a third slider 314 is provided between the fifth rotating part 311 and the first rotating part 210. One end of the bottom of the third slider 314 is provided with a sloping slider 3141. A retaining strip 315 with a sloping protrusion 3151 is installed in the long groove 312. The sloping slider 3141 is slidably disposed on the sloping protrusion 3151. The end of the sloping slider 3141 can enter and exit the fifth retaining groove 3131 of the sixth rotating part 313 and the sixth retaining groove 3311 of the seventh rotating part 331.

[0036] Specifically, when the backrest 320 needs to be folded, the fourth rotating part 324 rotates around the fifth rotating part 311, and its outer annular protrusion 3242 rotates along the arc-shaped protrusion 3111. When the arc-shaped recess rotates to above the third slider 314, the third slider 314 slides upward, and the bottom inclined slider 3141 slides along the inclined protrusion 3151 of the locking strip 315, generating a vertical displacement. This causes the end of the inclined slider 3141 to simultaneously move out of the fifth locking slot 3131 of the sixth rotating part 313 and the sixth locking slot 3311 of the seventh rotating part 331, thereby unlocking the seat plate 310 from the guardrail 330, allowing the guardrail 330 to rotate and fold. This linkage design allows the folding and adjustment of the backrest 320 to be completed synchronously with the guardrail 330, reducing operation steps while improving connection stability and making folding and folding the car more convenient.

[0037] This application further proposes that footrests 316 are provided on both sides of the bottom of the seat 310, and the footrests 316 can rotate around the pivot on the seat 310. Specifically, the footrests 316 form a rotatable connection structure with the seat 310 through the pivot. When the infant is in a sitting position, the footrests 316 can be adjusted to a horizontal position to support the feet to hang naturally; when it is necessary to lie down and rest, the footrests 316 can be pulled out and rotated to form a support surface, so that the feet can maintain a comfortable angle.

[0038] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0039] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

Claims

1. A novel stroller bag, characterized in that, include: A push rod (100) is telescopic; Folding sleeve (200), the folding sleeve (200) is sleeved on both sides of the push rod (100), the folding sleeve (200) includes a first rotating part (210) and a second rotating part (220). The seat (300) includes a seat plate (310) and a backrest (320). The two sides of the seat plate (310) are rotatably disposed on the inner side of the bottom end of the backrest (320), and the outer side of the bottom end of the backrest (320) is rotatably disposed on the inner side of the first rotating part (210). A rear wheel support rod (400) is provided with a third rotating part (410) at the top of the rear wheel support rod (400). The outer side of the third rotating part (410) is rotatably disposed inside the second rotating part (220). A connecting tube (420) is inserted between the two third rotating parts (410). A first button (430) is provided on the outer side of the second rotating part (220). A gear (440) is provided between the second rotating part (220) and the third rotating part (410). The pressing end of the first button (430) abuts against the outer end face of the gear (440). A spring is provided between the inner end face of the gear (440) and the third rotating part (410). The gear (440) can simultaneously engage the second rotating part (220) and the third rotating part (410), or move out of the second rotating part (220) and only engage with the third rotating part (410). The bag body (500) is detachably mounted between two rear wheel support rods (400).

2. A novel type of stroller according to claim 1, characterized in that, The top two ends of the bag body (500) are provided with mounting blocks (510), and a second button (520) is pressed in the mounting groove provided on the mounting block (510); the lower end of the third rotating part (410) is provided with a first slot (411), and the top of the second button (520) can enter or move out of the first slot (411).

3. A novel type of stroller according to claim 2, characterized in that, The bottom sides of the bag body (500) are provided with positioning protrusions (530), the bottom end of the rear wheel support rod (400) is connected to the rear wheel mounting bracket (450), the top of the rear wheel mounting bracket (450) is provided with a second slot (451), and the positioning protrusions (530) can enter or move out of the second slot (451).

4. The novel luggage-baby carriage according to claim 1, wherein The push rod (100) includes a first sleeve (110), a second sleeve (120) nested in the first sleeve (110), a third sleeve (130) nested in the second sleeve (120), a fourth sleeve (140) nested in the third sleeve (130), and a horizontal tube (150) connected to the top of the fourth sleeve (140). The end of the fourth sleeve (140) located inside the third sleeve (130) is provided with a first unlocking component (160), and the end of the third sleeve (130) located inside the second sleeve (120) and the end of the second sleeve (120) located inside the first sleeve (110) are both provided with a second unlocking component (170). The inner side of the horizontal tube (150) is provided with a third button (151), and the two ends of the third button (151) are connected to the first unlocking component (160) through the first pull rope (152).

5. A novel type of stroller according to claim 4, characterized in that, The first unlocking component (160) includes a first top sleeve (161) and a first latch (162). The first top sleeve (161) is fitted onto the fourth sleeve (140). The first latch (162) is located inside the first top sleeve (161). A spring is provided between the first latch (162) and the first top sleeve (161). The first pull rope (152) is connected to the first latch (162). The third sleeve (130) is provided with a first locking hole (131). The first latch (162) can enter the first locking hole (131).

6. A novel type of stroller according to claim 4 or 5, characterized in that, The second unlocking component (170) includes a second top sleeve (171), a top block (172), and a second slider (173). The second top sleeve (171) is respectively fitted onto the third sleeve (130) and the second sleeve (120). The second slider (173) is located inside the second top sleeve (171). The inclined end of the top block (172) cooperates with the inclined surfaces on both sides of the second slider (173). A spring is provided between one end of the second slider (173) and the second top sleeve (171), and a second latch (1731) is provided at the other end. The second sleeve (120) and the first sleeve (110) are respectively provided with a second locking hole (121) and a third locking hole (111), and the second latch (1731) can enter and exit the second locking hole (121) or the third locking hole (111).

7. A novel type of stroller according to claim 1, characterized in that, A fourth button (322) is pressed into the button groove (321) at the upper end of the backrest (320). Pull cord grooves (323) are provided on both sides below the button groove (321). The fourth button (322) is connected to the second pull cord in the pull cord groove (323). The backrest (320) has a fourth rotating part (324) on both sides of the bottom end. A pull block (325) is provided in the mounting groove above the fourth rotating part (324). The end of the second pull rope away from the fourth button (322) is connected to the pull block (325). A locking block (3251) is provided at the lower end of the pull block (325). The upper edge of the fourth rotating part (324) is provided with a third slot (3241), and the upper edge of the first rotating part (210) is provided with three fourth slots (211); the card block (3251) can be simultaneously inserted into or removed from the third slot (3241) and the fourth slot (211).

8. A novel type of stroller according to claim 7, characterized in that, The seat plate (310) is provided with guardrails (330) on both sides.

9. A novel type of stroller according to claim 8, characterized in that, The seat plate (310) has a fifth rotating part (311) on both sides of the rear end. The outer side of the fifth rotating part (311) has an arc-shaped protrusion (3111). The inner ring of the fourth rotating part (324) has an annular protrusion (3242). The outer surface of the arc-shaped protrusion (3111) is in contact with the annular protrusion (3242). The edge of the annular protrusion (3242) has an arc-shaped recess. The fifth rotating part (311) is connected to the sixth rotating part (313) through the long groove (312), and the seventh rotating parts (331) at both ends of the guardrail (330) are located in the sixth rotating part (313); a third slider (314) is provided between the fifth rotating part (311) and the first rotating part (210), and a slope slider (3141) is provided at one end of the bottom of the third slider (314). A retaining strip (315) with a slope protrusion (3151) is installed in the long groove (312), and the slope slider (3141) slides on the slope protrusion (3151). The end of the inclined slider (3141) can enter and exit the fifth slot (3131) of the sixth rotating part (313) and the sixth slot (3311) of the seventh rotating part (331).

10. A novel type of stroller according to claim 1, characterized in that, Footrests (316) are provided on both sides of the bottom of the seat plate (310), and the footrests (316) can rotate around the pivot on the seat plate (310).

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