Foldable baby carriage

Abstract

The utility model belongs to the technical field of baby carriages, and particularly relates to a foldable baby carriage which comprises a foldable carriage frame, a seat plate and a dinner plate are arranged on the carriage frame, the carriage frame comprises a front wheel carrier and a rear wheel carrier which are rotatably connected, a push rod is movably arranged on the rear wheel carrier, and the seat plate is movably connected with the front wheel carrier and the push rod respectively. A first locking piece and a first elastic piece are arranged on the rear wheel frame; the dinner plate is rotationally arranged on the front wheel frame, a second locking piece and a second elastic piece are arranged on the front wheel frame, and the second elastic piece drives the second locking piece to reset and is matched with the dinner plate, so that the dinner plate and the front wheel frame are relatively fixed; the push rod comprises a push rod body and a connecting seat, the connecting seat is slidably arranged on the rear wheel frame, a transmission connecting rod is arranged between the push rod body and the front wheel frame and rotationally connected with the push rod body and the front wheel frame, and a driving part is arranged on the transmission connecting rod. The utility model aims to provide the foldable baby carriage which is high in structural strength and long in service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of baby carriages, and particularly relates to a foldable baby carriage. Background Art

[0002] A baby stroller is a tool vehicle designed to provide convenience for babies' outdoor activities. In order to facilitate the storage and transportation of baby strollers, most baby strollers on the market are of folding structure.

[0003] In order to facilitate babies to play and eat, many baby strollers are provided with dining trays, such as the folding structure of a baby stroller disclosed in Chinese utility model patent CN202322789889.3, which includes a front bracket, a rear bracket and a rotating seat, a seat plate is rotatably provided on the front bracket, a push rod is provided on the rotating seat, a locking device is provided on the rotating seat, and a telescopic rod connected to the locking device and controlling the opening of the locking device is provided on the push rod; the locking device includes a first locking member and a second locking member, the first locking member connects the rotating seat and the rear bracket, the second locking member connects the rotating seat and the front bracket, the seat plate is connected to the first locking member through a transmission connecting rod, a third locking member is connected to the second locking member, the other end of the third locking member is connected to the first locking member, and the second locking member controls the opening and closing of the first locking member by the third locking member; when the third locking member and the first locking member are in the open state, the rear bracket is folded toward the front bracket relative to the rotating seat, and the rotating seat remains in the unfolded state.

[0004] In the above structure, the front wheel frame, the rear wheel frame and the push rod are hinged at one place, and the force is relatively concentrated. When the front wheel frame, the rear wheel frame and the end of the push rod are subjected to force, the front wheel frame, the rear wheel frame and the push rod are easily damaged, affecting the service life of the stroller. Summary of the invention

[0005] In order to overcome the defects in the prior art, the purpose of the utility model is to provide a foldable baby stroller with high structural strength and long service life.

[0006] The purpose of the utility model is achieved in this way:

[0007] A foldable baby carriage, comprising a foldable frame, a seat plate and a dining tray are arranged on the frame, the frame comprises a front wheel frame and a rear wheel frame which are rotatably connected, a push rod is movably arranged on the rear wheel frame, the seat plate is movably connected with the front wheel frame and the push rod respectively, and the front wheel frame, the rear wheel frame, the push rod and the seat plate form a four-bar mechanism, a first locking member and a first elastic member are arranged on the rear wheel frame, the first elastic member drives the first locking member to cooperate with the push rod to limit the relative movement of the push rod and the rear wheel frame, and keeps the front wheel frame and the rear wheel frame in an unfolded state;

[0008] The dining tray is rotatably arranged on the front wheel frame, and a second locking member and a second elastic member are arranged on the front wheel frame, and the second elastic member drives the second locking member to reset and cooperate with the dining tray, so that the dining tray and the front wheel frame are relatively fixed;

[0009] The push rod comprises a foldable push rod body and a connecting seat, the connecting seat is slidably arranged on the rear wheel frame, a transmission connecting rod is arranged between the push rod body and the front wheel frame, the transmission connecting rod is rotatably connected to the push rod body and the front wheel frame respectively, and a driving part for driving the second locking member to move is arranged on the transmission connecting rod;

[0010] The movement of the first locking piece is controlled so that the push rod and the rear wheel frame can move relative to each other, and the push rod body and the connecting seat are controlled to fold relative to each other so that the push rod body folds close to the rear wheel frame, so that the transmission connecting rod and the front wheel frame move relative to each other, thereby driving the second locking piece to move through the driving part, and further allowing the dining plate and the front wheel frame to be folded relative to each other.

[0011] The utility model is further configured as follows: the driving part is provided with an inclined guiding surface, and the second locking piece is provided with a receiving groove adapted to the driving part; the driving part is guided by the guiding surface and disengaged from the receiving groove, thereby controlling the relative movement of the second locking piece and the dinner plate, thereby allowing the dinner plate and the front wheel frame to be relatively folded.

[0012] The utility model is further configured as follows: a mounting hole is provided on the front wheel frame, the second locking piece is slidably arranged in the mounting hole, the second elastic piece is arranged at the bottom of the mounting hole, a guide protrusion is provided in the mounting hole, and a guide groove adapted to the guide protrusion is provided on the second locking piece.

[0013] The utility model is further configured as follows: a positioning tooth is provided on the second locking member, a positioning groove is provided on the dinner plate, the second elastic member drives the second locking member to reset and makes the positioning tooth cooperate with the positioning groove, so that the dinner plate and the front wheel frame remain in an unfolded state or a folded state, and the driving part can drive the positioning tooth to disengage from the positioning groove, so that the dinner plate and the front wheel frame can rotate relative to each other.

[0014] The utility model is further configured as follows: the second locking piece is rotatably arranged on the front wheel frame, and the second locking piece can move axially and disengage the positioning tooth from the positioning groove, the second locking piece is provided with auxiliary teeth, and the front wheel frame is provided with auxiliary grooves adapted to the auxiliary teeth, the auxiliary teeth and the auxiliary grooves cooperate to improve the connection strength between the second locking piece and the front wheel frame, the cross-sectional area of ​​the auxiliary groove is smaller than the cross-sectional area of ​​the positioning tooth so that the positioning tooth cannot penetrate into the auxiliary groove.

[0015] The utility model is further configured as follows: an extension rod is slidably arranged on the push rod body, a first clamping hole adapted to the first locking piece is arranged on the connecting seat, and the first locking piece can be driven to disengage from the first clamping hole after the extension rod is contracted toward the push rod body, so that the connecting seat can slide relative to the rear wheel frame, and a third locking piece for controlling the extension rod to be relatively fixed to the push rod body is arranged on the extension rod.

[0016] The utility model is further configured as follows: a third elastic member is provided on the extension rod, and a third clamping hole adapted to the third locking member is provided on the push rod body; the third elastic member drives the third locking member to reset and enables the third locking member to cooperate with the third clamping hole, so that the extension rod and the push rod body are relatively fixed; under the action of external force, the third locking member can be disengaged from the third clamping hole.

[0017] The utility model is further configured as follows: an auxiliary connecting rod and a fifth elastic member driving the auxiliary connecting rod to reset are slidably arranged in the push rod body; the extension rod can drive the auxiliary connecting rod to move, and drive the first locking member to disengage from the first clamping hole through the auxiliary connecting rod.

[0018] The utility model is further configured as follows: a first limiting wall is provided on the front wheel frame, a first abutting wall is provided on the rear wheel frame, a second limiting wall is provided on the connecting seat, and a second abutting wall is provided on the push rod body; when the frame is controlled to unfold, the first locking member fixes the connecting seat and the rear wheel frame relatively, the first abutting wall abuts against the first limiting wall to fix the front wheel frame and the rear wheel frame relatively, and the second abutting wall abuts against the second limiting wall to fix the push rod body and the connecting seat relatively.

[0019] The utility model is further configured as follows: the dinner plate includes a detachably connected mounting rod and a dinner plate body, the mounting rod is rotatably connected to the front wheel frame, and a fourth locking piece is provided on the mounting rod, the fourth locking piece is detachably connected to the dinner plate body and relatively fixes the mounting rod and the dinner plate body.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] 1. In the utility model, the front wheel frame, the rear wheel frame, the push rod and the seat plate form a four-bar mechanism, and the front wheel frame, the rear wheel frame, the push rod and the transmission connecting rod form a four-bar mechanism. The stability of the baby stroller is improved through two groups of four-bar mechanisms, and the structural strength of the baby stroller is improved, which is beneficial to extending the service life of the baby stroller. The four-bar mechanism has a simple structure, is convenient for assembly and production, and is beneficial to the stable unfolding or folding of the baby stroller.

[0022] 2. The setting of the storage groove in the utility model is conducive to the close cooperation between the second locking member and the transmission connecting rod, and the setting of the guide surface facilitates the cooperation or disengagement of the second locking member and the transmission connecting rod, which is convenient for users to use and control; the setting of the mounting hole facilitates the hidden setting of the second locking member and the second elastic member, and the setting of the guide protrusion and the guide groove facilitates the synchronous rotation of the second locking member and the front wheel frame, and is convenient for driving the second locking member to move during the folding process of the front wheel frame and the rear wheel frame.

[0023] 3. In the utility model, the second elastic member drives the positioning groove to cooperate with the positioning tooth, and the driving part drives the positioning groove to disengage from the positioning groove. The structure is simple and convenient for controlling the relative fixation of the dining plate and the front wheel frame. The setting of the auxiliary groove and the auxiliary tooth is beneficial to improving the connection strength between the second locking member and the front wheel frame, avoiding damage to the positioning groove and the positioning groove, and because the cross-sectional area of ​​the auxiliary groove is smaller than the cross-sectional area of ​​the positioning tooth, it is avoided that the positioning groove penetrates into the auxiliary groove to affect the relative folding of the dining plate.

[0024] 4. The sliding extension rod in the utility model facilitates the folding and storage of the push rod, and the first locking piece is driven by the extension rod to move, which can prevent the stroller from accidentally folding during use, making it convenient for users to use. The setting of the third locking piece is convenient for users to use and prevents the extension rod from accidentally driving the first locking piece to move; the setting of the fifth elastic piece and the auxiliary connecting rod can not only prevent debris from entering the push rod body, but also prevent the extension rod from accidentally driving the first locking piece to move.

[0025] 5. The first abutting wall, the first limiting wall, the second abutting wall and the second limiting wall in the utility model have simple structures, are easy to produce and process, and are convenient for the stable deployment of the front wheel frame and the rear wheel frame as well as the push rod body and the connecting seat; the detachably connected mounting rod and the dining plate body facilitate the flexible disassembly and installation of the dining plate body, making it convenient for the user to flexibly use the dining plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the utility model in an expanded state;

[0027] Figure 2 It is a schematic diagram of the structure of the utility model in a folded state;

[0028] Figure 3 It is an explosion schematic diagram of the utility model;

[0029] Figure 4 It is a partial cross-sectional view of the connection structure between the rear wheel frame and the push rod in the utility model;

[0030] Figure 5 It is a partial structural schematic diagram of the front wheel frame in the utility model;

[0031] Figure 6 It is a partial cross-sectional view of the front wheel frame of the utility model;

[0032] Figure 7 It is one of the partial cross-sectional views of the push rod in the utility model;

[0033] Figure 8 This is the second partial cross-sectional view of the push rod in the utility model;

[0034] Fig. 9 It is a structural schematic diagram of the transmission connecting rod in the utility model;

[0035] Fig.10 It is a partial cross-sectional view of the Chinese food plate of the utility model;

[0036] Fig.11 It is a structural schematic diagram of the second locking member in the utility model.

[0037] Meanings of the numbers in the figure: 1-front wheel frame; 11-mounting hole; 12-guide protrusion; 13-first limiting wall; 2-rear wheel frame; 21-first abutting wall; 22-first locking member; 23-first elastic member; 3-push rod; 31-push rod body; 32-connecting seat; 33-extension rod; 34-reinforcement rod; 35-auxiliary connecting rod;

[0038] 36-fifth elastic member; 37-limiting pin; 311-third clamping hole; 312-second abutting wall; 321-sliding hole; 322-first clamping hole; 323-inclined surface; 324-second limiting wall; 331-sliding groove; 351-limiting guide groove; 4-transmission connecting rod; 41-rotation hole; 42-driving part; 421-guide surface; 422-support surface; 5-seat plate; 51-backrest rod; 6-dinner plate; 61-dinner plate body; 62-installation rod; 63-fourth locking member;

[0039] 64-the fourth elastic member; 65-connecting hole; 66-hinge rod; 611-slot; 612-clamping slot; 651-positioning slot; 652-auxiliary slot; 7-the second locking member; 71-the first mounting seat; 72-the second mounting seat; 711-storage slot; 712-pressing surface; 713-guide slot; 714-fixing slot; 715-end face; 721-positioning tooth; 722-auxiliary tooth; 723-rotating rod; 724-hinge hole; 8-the second elastic member; 9-handle; 91-pull rope; 92-sliding seat; 93-the third locking member; 94-the third elastic member; 921-inclined wall; 931-guide wall. DETAILED DESCRIPTION

[0040] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0041] See also Figures 1 to 11As shown, a foldable baby carriage comprises a foldable frame, a seat plate 5 and a dining tray 6 are arranged on the frame, the frame comprises a front wheel frame 1 and a rear wheel frame 2 which are rotatably connected, a push rod 3 is movably arranged on the rear wheel frame 2, the seat plate 5 is movably connected with the front wheel frame 1 and the push rod 3 respectively, and the front wheel frame 1, the rear wheel frame 2, the push rod 3 and the seat plate 5 form a four-bar mechanism, a first locking member 22 and a first elastic member 23 are arranged on the rear wheel frame 2, the first elastic member 23 drives the first locking member 22 to cooperate with the push rod 3 to limit the relative movement between the push rod 3 and the rear wheel frame 2, and keeps the front wheel frame 1 and the rear wheel frame 2 in an unfolded state;

[0042] The dining tray 6 is rotatably arranged on the front wheel frame 1, and a second locking member 7 and a second elastic member 8 are arranged on the front wheel frame 1. The second elastic member 8 drives the second locking member 7 to reset and cooperate with the dining tray 6, so that the dining tray 6 and the front wheel frame 1 are relatively fixed;

[0043] The push rod 3 includes a foldable push rod body 31 and a connecting seat 32, the connecting seat 32 is slidably arranged on the rear wheel frame 2, a transmission connecting rod 4 is arranged between the push rod body 31 and the front wheel frame 1, the transmission connecting rod 4 is rotatably connected to the push rod body 31 and the front wheel frame 1 respectively, and a driving part 42 for driving the second locking member 7 to move is arranged on the transmission connecting rod 4;

[0044] The movement of the first locking member 22 is controlled so that the push rod 3 and the rear wheel frame 2 can move relative to each other, and the push rod body 31 and the connecting seat 32 are controlled to fold relative to each other so that the push rod body 31 is folded close to the rear wheel frame 2, so that the transmission connecting rod 4 and the front wheel frame 1 can move relative to each other, thereby driving the second locking member 7 to move through the driving part 42, and further allowing the dining plate 6 and the front wheel frame 1 to be folded relative to each other.

[0045] In the above structure, the front wheel frame 1, the rear wheel frame 2, the push rod 3 and the seat plate 5 form a four-bar mechanism, and the front wheel frame 1, the rear wheel frame 2, the push rod 3 and the transmission connecting rod 4 form a four-bar mechanism. The stability of the baby stroller is improved by two groups of four-bar mechanisms, and the structural strength of the baby stroller is improved, which is beneficial to extending the service life of the baby stroller. The four-bar mechanism has a simple structure, is convenient for assembly and production, and is beneficial to the stable unfolding or folding of the baby stroller.

[0046] In this embodiment, a backrest rod 51 is rotatably provided at the rear side of the seat plate 5 , and the backrest rod 51 can be turned over and folded toward the seat plate 5 .

[0047] The driving part 42 described in the utility model is provided with an inclined guiding surface 421, and the second locking member 7 is provided with a receiving groove 711 adapted to the driving part 42; the driving part 42 is guided by the guiding surface 421 and disengaged from the receiving groove 711, thereby controlling the relative movement of the second locking member 7 and the dining plate 6, so that the dining plate 6 and the front wheel frame 1 can be folded relative to each other, and the setting of the receiving groove 711 is conducive to the close cooperation between the second locking member 7 and the transmission connecting rod 4, and the setting of the guiding surface 421 facilitates the cooperation or disengagement of the second locking member 7 and the transmission connecting rod 4, which is convenient for the user to use and control.

[0048] The front wheel frame 1 is provided with a mounting hole 11, the second locking member 7 is slidably arranged in the mounting hole 11, the second elastic member 8 is arranged at the bottom of the mounting hole 11, and a guide protrusion 12 is arranged in the mounting hole 11, and a guide groove 713 adapted to the guide protrusion 12 is arranged on the second locking member 7. The setting of the mounting hole 11 facilitates the hidden setting of the second locking member 7 and the second elastic member 8, and the setting of the guide protrusion 12 and the guide groove 713 facilitates the synchronous rotation of the second locking member 7 and the front wheel frame 1, and facilitates driving the second locking member 7 to move during the folding process of the front wheel frame 1 and the rear wheel frame 2.

[0049] The second locking member 7 is provided with a positioning tooth 721, and the dining plate 6 is provided with a positioning groove 651. The second elastic member 8 drives the second locking member 7 to reset and makes the positioning tooth 721 cooperate with the positioning groove 651, so that the dining plate 6 and the front wheel frame 1 remain in an unfolded state or a folded state, and the driving part 42 can drive the positioning tooth 721 to disengage from the positioning groove 651, so that the dining plate 6 and the front wheel frame 1 can rotate relatively. In this structure, the second elastic member 8 drives the positioning groove 651 to cooperate with the positioning tooth 721, and the driving part 42 drives the positioning groove 651 to disengage from the positioning groove 651. The structure is simple and convenient for controlling the relative fixation of the dining plate 6 and the front wheel frame 1.

[0050] In this embodiment, the second locking member 7 includes a first mounting seat 71 and a second mounting seat 72 that are detachably connected. The receiving groove 711 is arranged on the first mounting seat 71, and an inclined tightening surface 712 is arranged on the side of the receiving groove 711. The guide surface 421 is in contact with the tightening surface 712 and can slide relatively along the tightening surface 712, thereby disengaging the driving part 42 from the receiving groove 711.

[0051] The driving portion 42 is provided with a supporting surface 422, and the first mounting seat 71 is provided with an end surface 715. After the driving surface is disengaged from the receiving groove 711, the supporting surface 422 presses against the end surface 715 so that the positioning tooth 721 and the positioning groove 651 remain disengaged. The positioning tooth 721 and the auxiliary tooth 722 are both provided on the second mounting seat 72, and the second mounting seat 72 is provided with a hinge hole 724, and the dining plate 6 is provided with a hinge rod 66 adapted to the hinge hole 724.

[0052] Preferably, the second locking member 7 is rotatably arranged on the front wheel frame 1, and the second locking member 7 can move axially and disengage the positioning tooth 721 from the positioning groove 651. Auxiliary teeth 722 are arranged on the second locking member 7, and an auxiliary groove 652 adapted to the auxiliary teeth 722 is arranged on the front wheel frame 1. The auxiliary teeth 722 cooperate with the auxiliary groove 652 to improve the connection strength between the second locking member 7 and the front wheel frame 1. The cross-sectional area of ​​the auxiliary groove 652 is smaller than the cross-sectional area of ​​the positioning tooth 721, so that the positioning tooth 721 cannot penetrate into the auxiliary groove 652. The setting of the auxiliary groove 652 and the auxiliary tooth 722 is beneficial to improving the connection strength between the second locking member 7 and the front wheel frame 1, avoiding damage to the positioning groove 651 and the positioning groove 651. Since the cross-sectional area of ​​the auxiliary groove 652 is smaller than the cross-sectional area of ​​the positioning tooth 721, the positioning groove 651 is avoided from penetrating into the auxiliary groove 652 to affect the relative folding of the dining plate 6.

[0053] The dinner plate 6 is provided with a connecting hole 65 , and the positioning groove 651 and the auxiliary groove 652 are circumferentially arranged on the side wall of the connecting hole 65 .

[0054] In this embodiment, the transmission connecting rod 4 is provided with a rotating hole 41, the second mounting seat 72 is provided with a rotating rod 723 adapted to the rotating hole 41, the first mounting seat 71 is provided with a fixing groove 714, the rotating rod 723 is inserted in the fixing groove 714 and fixed relative to the first mounting seat 71.

[0055] An extension rod 33 is slidably arranged on the push rod body 31, and a first clamping hole 322 adapted to the first locking piece 22 is arranged on the connecting seat 32. After the extension rod 33 is contracted toward the push rod body 31, the first locking piece 22 can be driven to disengage from the first clamping hole 322, so that the connecting seat 32 can slide relative to the rear wheel frame 2. A third locking piece 93 for controlling the extension rod 33 to be relatively fixed to the push rod body 31 is arranged on the extension rod 33. The sliding extension rod 33 facilitates the folding and storage of the push rod 3, and driving the first locking piece 22 to move by the extension rod 33 can avoid accidental folding during use of the baby stroller, which is convenient for users.

[0056] The extension rod 33 in the utility model is provided with a third elastic member 94, and the push rod body 31 is provided with a third clamping hole 311 adapted to the third locking member 93. The third elastic member 94 drives the third locking member 93 to reset and makes the third locking member 93 cooperate with the third clamping hole 311, so that the extension rod 33 and the push rod body 31 are relatively fixed; under the action of external force, the third locking member 93 can be disengaged from the third clamping hole 311.

[0057] The extension rod 33 described in this embodiment is U-shaped as a whole, and a push rod body 31 is slidably provided at both ends of the U-shaped extension rod 33, and a connecting seat 32 is rotatably provided on the push rod body 31. A reinforcing rod 34 is provided between the two connecting seats 32. The setting of the reinforcing rod 34 prevents the push rod 3 from bending and being damaged. A sliding hole 321 is provided on the connecting seat 32, and the rear wheel frame 2 is slidably set in the sliding hole 321, and a first clamping hole 322 is provided on the side wall of the sliding hole 321, and preferably, an inclined surface 323 is provided at the end of the sliding hole 321. When the connecting seat 32 slides relatively along the rear wheel frame 2, the inclined surface 323 can drive the first locking member 22 to move and make the first locking member 22 cooperate with the first clamping hole 322.

[0058] A handle 9 is provided at the bottom of the U-shaped extension rod 33, and a pull rope 91 is connected to the handle 9, and a slide 92 is connected to the pull rope 91, and an inclined wall 921 is provided on the slide 92. A slide groove 331 is provided on the extension rod 33, and a third locking piece 93 is slidably set in the slide groove 331. The third locking piece 93 is provided with a guide wall 931 adapted to the inclined wall 921. The handle 9 drives the slide 92 to move through the pull rope 91, and drives the third locking piece 93 to disengage from the third clamping hole 311 through the inclined wall 921. Preferably, two third clamping holes 311 are provided on the push rod body 31, and the third locking piece 93 respectively cooperates with the two third clamping holes 311 when the extension rod 33 and the push rod body 31 are relatively contracted or relatively expanded.

[0059] An auxiliary connecting rod 35 and a fifth elastic member 36 for driving the auxiliary connecting rod 35 to return to its original position are slidably disposed in the push rod body 31 . The extension rod 33 can drive the auxiliary connecting rod 35 to move, and drive the first locking member 22 to disengage from the first engaging hole 322 through the auxiliary connecting rod 35 .

[0060] In this embodiment, a limiting guide groove 351 is provided on the auxiliary connecting rod 35, and a limiting pin 37 adapted to the limiting guide groove 351 is provided on the push rod body 31. The limiting guide groove 351 and the limiting pin 37 can not only limit the movement range of the auxiliary connecting rod 35, but also facilitate the stable sliding of the auxiliary connecting rod 35. Preferably, the push rod body 31 and the connecting seat 32 are rotatably connected via the limiting pin 37.

[0061] The front wheel frame 1 is provided with a first limiting wall 13, the rear wheel frame 2 is provided with a first abutting wall 21, the connecting seat 32 is provided with a second limiting wall 324, and the push rod body 31 is provided with a second abutting wall 312; to control the unfolding of the frame, the first locking piece 22 makes the connecting seat 32 and the rear wheel frame 2 relatively fixed, the first abutting wall 21 abuts against the first limiting wall 13 to fix the front wheel frame 1 and the rear wheel frame 2 relatively, and the second abutting wall 312 abuts against the second limiting wall 324 to fix the push rod body 31 and the connecting seat 32 relatively fixed. The first abutting wall 21, the first limiting wall 13, the second abutting wall 312 and the second limiting wall 324 have a simple structure, are easy to produce and process, and are convenient for the stable unfolding of the front wheel frame 1 and the rear wheel frame 2 and the push rod body 31 and the connecting seat 32.

[0062] The dinner plate 6 described in the utility model includes a detachably connected mounting rod 62 and a dinner plate body 61, the mounting rod 62 is rotatably connected to the front wheel frame 1, and a fourth locking piece 63 is provided on the mounting rod 62, the fourth locking piece 63 is detachably connected to the dinner plate body 61 and makes the mounting rod 62 and the dinner plate body 61 relatively fixed, the detachably connected mounting rod 62 and the dinner plate body 61 facilitate the flexible disassembly and installation of the dinner plate body 61, and the user is convenient to flexibly use the dinner plate 6.

[0063] In this embodiment, a slot 611 is provided on the dining plate body 61, and a snap-in slot 612 is provided on the side wall of the slot 611. The mounting rod 62 is inserted into the slot 611 and makes the fourth locking piece 63 cooperate with the snap-in slot 612. The fourth locking piece 63 is slidably provided on the mounting rod 62, and a fourth elastic piece 64 is provided on the mounting rod 62 for driving the fourth locking piece 63 to cooperate with the snap-in slot 612.

[0064] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A foldable baby stroller, comprising a foldable frame, on which a seat plate (5) and a dining tray (6) are arranged, characterized in that: The frame comprises a front wheel frame (1) and a rear wheel frame (2) which are rotatably connected, a push rod (3) is movably arranged on the rear wheel frame (2), a seat plate (5) is movably connected to the front wheel frame (1) and the push rod (3), and the front wheel frame (1), the rear wheel frame (2), the push rod (3) and the seat plate (5) form a four-bar mechanism, a first locking member (22) and a first elastic member (23) are arranged on the rear wheel frame (2), and the first elastic member (23) drives the first locking member (22) to cooperate with the push rod (3) to limit the relative movement between the push rod (3) and the rear wheel frame (2), and keeps the front wheel frame (1) and the rear wheel frame (2) in an unfolded state; The dining tray (6) is rotatably mounted on the front wheel frame (1), and a second locking member (7) and a second elastic member (8) are mounted on the front wheel frame (1). The second elastic member (8) drives the second locking member (7) to reset and cooperate with the dining tray (6), thereby fixing the dining tray (6) and the front wheel frame (1) relatively. The push rod (3) comprises a foldable push rod body (31) and a connecting seat (32), the connecting seat (32) being slidably arranged on the rear wheel frame (2), a transmission connecting rod (4) being arranged between the push rod body (31) and the front wheel frame (1), the transmission connecting rod (4) being rotatably connected to the push rod body (31) and the front wheel frame (1), and a driving part (42) for driving the second locking member (7) to move being arranged on the transmission connecting rod (4); The first locking member (22) is controlled to move so that the push rod (3) and the rear wheel frame (2) can move relative to each other, and the push rod body (31) and the connecting seat (32) are controlled to fold relative to each other so that the push rod body (31) folds toward the rear wheel frame (2), so that the transmission connecting rod (4) and the front wheel frame (1) can move relative to each other, thereby driving the second locking member (7) to move through the driving part (42), and further allowing the dining plate (6) and the front wheel frame (1) to fold relative to each other.

2. A foldable baby stroller according to claim 1, characterized in that: The driving part (42) is provided with an inclined guide surface (421), and the second locking member (7) is provided with a storage groove (711) adapted to the driving part (42); the driving part (42) is guided by the guide surface (421) and disengaged from the storage groove (711), thereby controlling the relative movement of the second locking member (7) and the dining tray (6), thereby enabling the dining tray (6) and the front wheel frame (1) to be folded relative to each other.

3. A foldable baby stroller according to claim 2, characterized in that: The front wheel frame (1) is provided with a mounting hole (11), the second locking member (7) is slidably arranged in the mounting hole (11), the second elastic member (8) is arranged at the bottom of the mounting hole (11), and a guide protrusion (12) is arranged in the mounting hole (11), and the second locking member (7) is provided with a guide groove (713) adapted to the guide protrusion (12).

4. A foldable baby stroller according to claim 1, characterized in that: The second locking member (7) is provided with a positioning tooth (721), and the dining plate (6) is provided with a positioning groove (651). The second elastic member (8) drives the second locking member (7) to reset and enables the positioning tooth (721) to cooperate with the positioning groove (651), so that the dining plate (6) and the front wheel frame (1) are kept in an unfolded state or a folded state, and the driving part (42) can drive the positioning tooth (721) to disengage from the positioning groove (651), so that the dining plate (6) and the front wheel frame (1) can rotate relative to each other.

5. A foldable baby stroller according to claim 4, characterized in that: The second locking member (7) is rotatably arranged on the front wheel frame (1), and the second locking member (7) can move axially to disengage the positioning tooth (721) from the positioning groove (651); the second locking member (7) is provided with an auxiliary tooth (722); the front wheel frame (1) is provided with an auxiliary groove (652) adapted to the auxiliary tooth (722); the auxiliary tooth (722) cooperates with the auxiliary groove (652) to improve the connection strength between the second locking member (7) and the front wheel frame (1); the cross-sectional area of ​​the auxiliary groove (652) is smaller than the cross-sectional area of ​​the positioning tooth (721), so that the positioning tooth (721) cannot penetrate into the auxiliary groove (652).

6. The foldable baby stroller according to claim 1, characterized in that: An extension rod (33) is slidably arranged on the push rod body (31), and a first clamping hole (322) adapted to the first locking member (22) is arranged on the connecting seat (32). After the extension rod (33) is retracted toward the push rod body (31), the first locking member (22) can be driven to disengage from the first clamping hole (322), so that the connecting seat (32) can slide relative to the rear wheel frame (2), and a third locking member (93) for controlling the extension rod (33) and the push rod body (31) to be relatively fixed is arranged on the extension rod (33).

7. A foldable baby stroller according to claim 6, characterized in that: The extension rod (33) is provided with a third elastic member (94), and the push rod body (31) is provided with a third clamping hole (311) adapted to the third locking member (93). The third elastic member (94) drives the third locking member (93) to reset and makes the third locking member (93) cooperate with the third clamping hole (311), so that the extension rod (33) and the push rod body (31) are relatively fixed; under the action of external force, the third locking member (93) can be disengaged from the third clamping hole (311).

8. The foldable baby stroller according to claim 6, characterized in that: An auxiliary connecting rod (35) and a fifth elastic member (36) for driving the auxiliary connecting rod (35) to return to its original position are slidably arranged in the push rod body (31); the extension rod (33) can drive the auxiliary connecting rod (35) to move, and drive the first locking member (22) to disengage from the first clamping hole (322) through the auxiliary connecting rod (35).

9. The foldable baby stroller according to claim 1, characterized in that: The front wheel frame (1) is provided with a first limiting wall (13), the rear wheel frame (2) is provided with a first abutting wall (21), the connecting seat (32) is provided with a second limiting wall (324), and the push rod body (31) is provided with a second abutting wall (312); to control the frame to unfold, the first locking member (22) fixes the connecting seat (32) and the rear wheel frame (2) relatively, the first abutting wall (21) abuts against the first limiting wall (13) to fix the front wheel frame (1) and the rear wheel frame (2) relatively, and the second abutting wall (312) abuts against the second limiting wall (324) to fix the push rod body (31) and the connecting seat (32) relatively.

10. The foldable baby stroller according to claim 1, characterized in that: The dining tray (6) comprises a detachably connected mounting rod (62) and a dining tray body (61); the mounting rod (62) is rotatably connected to the front wheel frame (1); a fourth locking member (63) is provided on the mounting rod (62); the fourth locking member (63) is detachably connected to the dining tray body (61) and relatively fixes the mounting rod (62) and the dining tray body (61).

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