Baby stroller frame and baby stroller

Abstract

The present invention relates to a stroller frame and a stroller. The stroller frame includes an upper handlebar, a lower handlebar, a front foot bar, a rear foot bar, a support bar, a first locking mechanism and a connecting mechanism. The lower handlebar is connected to the upper handlebar. One end of the support bar is connected to the lower handlebar, and the other end of the support bar is connected to the rear foot bar. The first locking mechanism is used to lock the lower handlebar and the support bar, and partially unlocks after the upper handlebar and the lower handlebar are folded relative to each other, so that the first end of the support bar can slide relative to the lower handlebar in a direction away from the upper handlebar. The connecting mechanism is used to connect the front foot bar, the rear foot bar and the lower handlebar, and drives the first locking mechanism to be completely unlocked after the lower handlebar rotates relative to the front foot bar and the rear foot bar, so that the support bar can slide relative to the lower handlebar in a direction close to the upper handlebar. The present invention has a simple folding operation and is relatively convenient to fold.

Description

Technical Field

[0001] The present invention relates to the technical field of baby carriages, and particularly to a baby carriage frame and a baby carriage. Background Art

[0002] When a baby goes out, the baby is usually placed in a baby carriage to relieve the burden on adults. When the baby carriage is not needed, the baby carriage can be folded up to reduce its volume and facilitate storage.

[0003] Currently, most baby carriages are foldable, but there are various folding methods. For the frame of a high - view baby carriage, the handlebar usually includes two upper and lower sections, which brings greater difficulty to the folding of the frame. This kind of frame usually needs to be provided with multiple locks, and when folding, it is necessary to unlock multiple locks separately before the operation can be carried out. The operation is not very convenient, the locking mechanism is relatively complex, and the failure rate is high, reducing the user experience.

[0004] It should be noted that the information disclosed in the background art part of the present invention is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0005] The object of the present invention is to provide a baby carriage frame and a baby carriage to improve the convenience of folding.

[0006] To achieve the above object, the present invention provides a baby carriage frame, comprising:

[0007] An upper handlebar;

[0008] A lower handlebar, connected to the upper handlebar;

[0009] A front foot bar;

[0010] A rear foot bar;

[0011] A support bar, its first end is connected to the lower handlebar, and its second end is connected to the rear foot bar;

[0012] A first locking mechanism for locking the lower handlebar and the support bar, and partially unlocking after the upper handlebar and the lower handlebar are folded relative to each other, so that the first end of the support bar can slide relative to the lower handlebar in a direction away from the upper handlebar; and

[0013] A connecting mechanism for connecting the front foot bar, the rear foot bar and the lower handlebar, and driving the first locking mechanism to be completely unlocked after the lower handlebar rotates relative to the front foot bar and the rear foot bar, so that the support bar can slide relative to the lower handlebar in a direction close to the upper handlebar.

[0014] In some embodiments, the first locking mechanism includes:

[0015] A sliding sleeve is sleeved on the lower handle rod and connected to the first end of the support rod. A first locking hole is provided at one end thereof away from the upper handle rod.

[0016] A first locking block is inserted into the first locking hole and is used to restrict the sliding sleeve from moving away from the upper handle rod from the position relatively locked with the lower handle rod; and

[0017] A first flexible member, with its first end connected to the upper handle rod and its second end connected to the first locking block, is used to drive the first locking block to disengage from the first locking hole when the upper handle rod folds relative to the lower handle rod, so as to release the restriction on the sliding sleeve moving away from the upper handle rod.

[0018] In some embodiments, the first locking mechanism further includes a first elastic member, which is used to drive the first locking block disengaged from the first locking hole to re-insert into the first locking hole.

[0019] In some embodiments, a second locking hole is provided at one end of the sliding sleeve close to the upper handle rod. The first locking mechanism further includes:

[0020] A second locking block is inserted into the second locking hole and is used to restrict the sliding sleeve from moving towards the upper handle rod from the position relatively locked with the lower handle rod; and

[0021] A second flexible member, with its first end connected to the second locking block and its second end connected to the connecting mechanism, is used to drive the second locking block to disengage from the second locking hole when the lower handle rod rotates relative to the front foot rod and the rear foot rod, so as to release the restriction on the sliding sleeve moving towards the upper handle rod.

[0022] In some embodiments, the first locking mechanism further includes:

[0023] A fixed seat is arranged inside the lower handle rod and is provided with a first locking cavity for accommodating the second locking block;

[0024] A slider is slidably arranged relative to the fixed seat. One end thereof away from the upper handle rod is connected to the second flexible member and is provided with a first hole. The shape of the first hole is configured to be able to drive the second locking block to extend out of or retract into the first locking cavity when the slider moves relative to the fixed seat; and

[0025] A first connecting rod is connected to the second locking block and is inserted into the first hole.

[0026] In some embodiments, the fixed seat is further provided with a second lock cavity for accommodating the first lock block. The first lock block moves relative to the fixed seat under the action of the first flexible member to extend or retract into the second lock cavity. The slider is provided with a second hole. The first locking mechanism further includes a second connecting rod, which is connected to the first lock block and inserted into the second hole. The shape of the second hole is configured to drive the first lock block to retract into the second lock cavity under the action of the first flexible member and drive the first lock block to move along the extension direction of the second flexible member when the slider moves relative to the fixed seat.

[0027] In some embodiments, the first locking mechanism further includes a second elastic member for driving the second lock block that has disengaged from the second lock hole to re-insert into the second lock hole.

[0028] In some embodiments, the connecting mechanism includes:

[0029] A connecting seat, mounted on the front foot rod, is provided with a first mounting groove, and the lower handle rod is rotatably mounted in the first mounting groove; and

[0030] A retaining pin, movably disposed on the lower handle rod and connected to the second flexible member, is configured to move relative to the lower handle rod when the lower handle rod rotates relative to the connecting seat, so as to drive the second flexible member to move.

[0031] In some embodiments, the connecting seat is provided with a first inclined surface, which contacts the retaining pin and drives the retaining pin to move when the lower handle rod rotates relative to the connecting seat.

[0032] In some embodiments, the connecting mechanism further includes a first sleeve, which is sleeved on the outer periphery of the lower handle rod, and the outer periphery of the first sleeve is provided with first ribs.

[0033] In some embodiments, a second mounting groove is further provided in the connecting seat, and the rear foot rod is rotatably mounted in the second mounting groove.

[0034] In some embodiments, the connecting mechanism further includes a second sleeve, which is sleeved on the outer periphery of the rear foot rod, and the outer periphery of the second sleeve is provided with second ribs.

[0035] In some embodiments, the baby stroller frame further includes:

[0036] A second locking mechanism for locking the upper handle rod and the lower handle rod; and

[0037] An unlocking mechanism for unlocking the second locking mechanism.

[0038] In some embodiments, the baby stroller frame further includes a seat board, a first connecting rod, and a second connecting rod. The front foot rod is in an inverted T shape. The seat board is connected to the lower handle rod. The first end of the first connecting rod is connected to the seat board, the second end of the first connecting rod is connected to the second connecting rod, the middle of the first connecting rod is connected to the front foot rod, and the second connecting rod is connected to the rear foot rod.

[0039] In some embodiments, the stroller frame further includes a first rear wheel, a second rear wheel, and a braking mechanism. The first rear wheel and the second rear wheel are rotatably mounted on the rear footrest, and the braking mechanism is used to relatively fix the first rear wheel and the second rear wheel to the rear footrest.

[0040] In some embodiments, the braking mechanism includes:

[0041] A first shift lever;

[0042] A second shift lever;

[0043] A first rotating seat rotatably arranged on the rear footrest and used to drive the first shift lever to move along the axial direction of the first rear wheel when rotating relative to the first rear wheel to block the rotation of the first rear wheel;

[0044] A brake pedal mounted on the first rotating seat;

[0045] A second rotating seat rotatably arranged on the rear footrest and used to drive the second shift lever to move along the axial direction of the second rear wheel when rotating relative to the second rear wheel to block the rotation of the second rear wheel; and

[0046] A third flexible member, with its first end connected to the first rotating seat and its second end connected to the second rotating seat, and used to drive the second rotating seat to rotate after the brake pedal is depressed and drives the first rotating seat to rotate.

[0047] In some embodiments, the first rotating seat is provided with a second inclined surface for contacting the first shift lever and driving the first shift lever to move; and / or, the second rotating seat is provided with a third inclined surface for contacting the second shift lever and driving the second shift lever to move.

[0048] In some embodiments, the first rotating seat is provided with a first stop groove arranged at the end of the second inclined surface to enter the first stop groove after driving the first shift lever to move to a position where the first rear wheel is blocked from rotating; and / or, the second rotating seat is provided with a second stop groove arranged at the end of the third inclined surface to enter the second stop groove after driving the second shift lever to move to a position where the second rear wheel is blocked from rotating.

[0049] To achieve the above object, the present invention also provides a stroller including the above stroller frame.

[0050] Based on the above technical solution, when the present invention is folded, after unlocking the lock between the upper handle rod and the lower handle rod, the first locking mechanism can be partially unlocked during the folding process of the upper handle rod relative to the lower handle rod, so that the upper handle rod and the lower handle rod can rotate downward together. During the rotation process, the first locking mechanism can be completely unlocked, so that the upper handle rod and the lower handle rod can continue to fold forward until complete folding is achieved. The folding operation is simple and convenient; moreover, the first locking mechanism is set to be unlocked in two steps, which is beneficial to reducing the number of locking mechanisms and simplifying the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0052] Figure 1 It is a schematic structural diagram of an embodiment of the baby carriage frame of the present invention.

[0053] Figure 2 It is a side view of an embodiment of the baby carriage frame of the present invention.

[0054] Figure 3 It is an exploded view of the first locking mechanism in an embodiment of the baby carriage frame of the present invention.

[0055] Figure 4 It is a schematic structural diagram of the assembled first locking mechanism in an embodiment of the baby carriage frame of the present invention.

[0056] Figure 5 It is a schematic structural diagram of the cooperation between the first locking mechanism and the second locking mechanism in an embodiment of the baby carriage frame of the present invention.

[0057] Figure 6 It is a schematic structural diagram of the connecting mechanism in an embodiment of the baby carriage frame of the present invention.

[0058] Figure 7 It is an exploded view of the connecting mechanism in an embodiment of the baby carriage frame of the present invention.

[0059] Figure 8 It is a sectional view of the assembled connecting mechanism in an embodiment of the baby carriage frame of the present invention.

[0060] Figure 9 It is an exploded view of the braking mechanism in an embodiment of the baby carriage frame of the present invention.

[0061] Figure 10 It is a schematic structural diagram of the assembled braking mechanism in an embodiment of the baby carriage frame of the present invention.

[0062] Figure 11Schematic structural diagram of an embodiment of the stroller frame of the present invention in the first folded state.

[0063] Figure 12 Schematic structural diagram of an embodiment of the stroller frame of the present invention in the second folded state.

[0064] Figure 13 Schematic structural diagram of an embodiment of the stroller frame of the present invention in the third folded state.

[0065] Figure 14 Schematic structural diagram of an embodiment of the stroller frame of the present invention in the fourth folded state.

[0066] Figure 15 Schematic structural diagram of an embodiment of the stroller frame of the present invention in the fully folded state.

[0067] In the figure:

[0068] 10. Upper handlebar; 20. Lower handlebar; 30. Front foot bar; 31. Footrest; 40. Rear foot bar; 50. Support rod; 60. Canopy bar; 70. Armrest bar; 80. Backrest bar; 90. Seat adjustment mechanism; 100. First locking mechanism; 110. Seat plate; 120. Support piece; 130. Backrest adjustment mechanism; 140. First connecting rod; 150. Second connecting rod; 160. First rear wheel; 170. Second rear wheel; 180. First front wheel; 190. Second front wheel; 200. Connecting mechanism; 210. Support member; 300. Second locking mechanism; 301. Turntable.

[0069] 101. Sliding sleeve; 102. First lock block; 103. First flexible member; 104. First elastic member; 105. Second lock block; 106. Second flexible member; 107. Fixed seat; 108. Slide block; 109. First connecting rod; 111. Second connecting rod; 112. Second elastic member; 113. Third connecting rod.

[0070] 1011. First lock hole; 1012. Second lock hole; 1013. Connecting hole.

[0071] 1071. Fourth hole; 1072. Fifth hole; 1073. Sixth hole.

[0072] 1081. First hole; 1082. Second hole; 1083. Third hole.

[0073] 201. Connecting seat; 202. Pin; 203. First sleeve; 204. Second sleeve; 205. First rivet; 206. Second rivet; 207. Connecting pin; 208. Handle; 209. Third rivet.

[0074] 400. The third flexible member; 401. The first mounting seat; 402. The first support seat; 403. The first rotating seat; 404. The first stop lever; 405. The first stop piece; 406. The third elastic member; 407. The fifth elastic member; 408. The first baffle; 409. The fourth rivet.

[0075] 501. The second mounting seat; 502. The second support seat; 503. The second rotating seat; 504. The second stop lever; 505. The second stop piece; 506. The fourth elastic member; 507. The sixth elastic member; 508. The second baffle; 509. The fifth rivet. Detailed implementation manners

[0076] Next, the technical solutions in the embodiments will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0077] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "transverse", "longitudinal", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention.

[0078] As Figure 1 and Figure 2 shown, in an embodiment of the stroller frame provided by the present invention, the frame includes a handle upper rod 10, a handle lower rod 20, a front foot rod 30, a rear foot rod 40, a support rod 50, a first locking mechanism 100, and a connecting mechanism 200. The handle lower rod 20 is connected to the handle upper rod 10. The first end of the support rod 50 is connected to the handle lower rod 20, and the second end of the support rod 50 is connected to the rear foot rod 40. The first locking mechanism 100 is used to lock the handle lower rod 20 and the support rod 50, and partially unlocks after the handle upper rod 10 and the handle lower rod 20 are relatively folded, so that the first end of the support rod 50 can slide relative to the handle lower rod 20 along a direction away from the handle upper rod 10. The connecting mechanism 200 is used to connect the front foot rod 30, the rear foot rod 40, and the handle lower rod 20, and drives the first locking mechanism 100 to be completely unlocked after the handle lower rod 20 rotates relative to the front foot rod 30 and the rear foot rod 40, so that the support rod 50 can slide relative to the handle lower rod 20 along a direction close to the handle upper rod 10.

[0079] When folding, after releasing the lock between the handlebar upper rod 10 and the handlebar lower rod 20, the first locking mechanism 100 can be partially unlocked, i.e., one-way unlocking, during the process of folding the handlebar upper rod 10 relative to the handlebar lower rod 20, so that the first end of the support rod 50 can move along the handlebar lower rod 20 in the direction away from the handlebar upper rod 10, so that the handlebar upper rod 10 and the handlebar lower rod 20 can rotate downward together. During the rotation process, the first locking mechanism 100 can be completely unlocked, i.e., two-way unlocking is achieved, so that the support rod 50 can move along the handlebar lower rod 20 in the direction close to the handlebar upper rod 10 and pass the initial locking position, so that the handlebar upper rod 10 and the handlebar lower rod 20 can continue to fold forward until they are fully folded, and the folding operation is simple and convenient; and the first locking mechanism is set to be unlocked in two steps, which is conducive to reducing the number of locking mechanisms and simplifying the structure.

[0080] like Figures 3 - 5 As shown, the first locking mechanism 100 includes a sleeve 101, a first locking block 102 and a first flexible member 103. The sleeve 101 is sleeved on the handlebar lower rod 20, the sleeve 101 is connected to the first end of the support rod 50, the end of the sleeve 101 away from the handlebar upper rod 10 is provided with a first locking hole 1011, the first locking block 102 is inserted in the first locking hole 1011, the first locking block 102 is used to limit the sleeve 101 from moving in a direction away from the handlebar upper rod 10 from a position relatively locked with the handlebar lower rod 20, the first end of the first flexible member 103 is connected to the handlebar upper rod 10, the second end of the first flexible member 103 is connected to the first locking block 102, the first flexible member 103 is used to drive the first locking block 102 to disengage from the first locking hole 1011 when the handlebar upper rod 10 is folded relative to the handlebar lower rod 20, so as to release the restriction on the movement of the sleeve 101 in a direction away from the handlebar upper rod 10.

[0081] Furthermore, the first locking mechanism 100 further includes a first elastic member 104 for driving the first locking block 102 that has escaped from the first locking hole 1011 to be reinserted into the first locking hole 1011 .

[0082] A second locking hole 1012 is provided at one end of the sliding sleeve 101 close to the handlebar upper rod 10, and the first locking mechanism 100 includes a second locking block 105 and a second flexible member 106. The second locking block 105 is inserted in the second locking hole 1012, and the second locking block 105 is used to limit the sliding sleeve 101 from moving in a direction close to the handlebar upper rod 10 from a position locked relative to the handlebar lower rod 20. The first end of the second flexible member 106 is connected to the second locking block 105, and the second end of the second flexible member 106 is connected to the connecting mechanism 200. The second flexible member 106 is used to drive the second locking block 105 to disengage from the second locking hole 1012 when the handlebar lower rod 20 rotates relative to the front foot rod 30 and the rear foot rod 40, so as to release the restriction on the movement of the sliding sleeve 101 in a direction close to the handlebar upper rod 10.

[0083] The first locking mechanism 100 further includes a fixed seat 107, a slider 108, and a first connecting rod 109. The fixed seat 107 is disposed inside the lower handle rod 20. The fixed seat 107 is provided with a first locking cavity for accommodating the second locking block 105. The slider 108 is slidably disposed relative to the fixed seat 107. One end of the slider 108 away from the upper handle rod 10 is connected to the second flexible member 106. The slider 108 is provided with a first hole 1081. The shape of the first hole 1081 is configured to be able to drive the second locking block 105 to extend out of or retract into the first locking cavity when the slider 108 moves relative to the fixed seat 107. The first connecting rod 109 is connected to the second locking block 105, and the slider 108 is inserted into the first hole 1081.

[0084] The fixed seat 107 is further provided with a second locking cavity for accommodating the first locking block 102. The first locking block 102 moves relative to the fixed seat 107 under the action of the first flexible member 103 to extend out of or retract into the second locking cavity. The slider 108 is provided with a second hole 1082. The first locking mechanism 100 further includes a second connecting rod 111. The second connecting rod 111 is connected to the first locking block 102 and inserted into the second hole 1082. The shape of the second hole 1082 is configured to be able to drive the first locking block 102 to retract into the second locking cavity under the action of the first flexible member 103 and drive the first locking block 102 to move along the extending direction of the second flexible member 106 when the slider 108 moves relative to the fixed seat 107.

[0085] The first locking mechanism 100 further includes a second elastic member 112 for driving the second locking block 105 that has disengaged from the second locking hole 1012 to re-insert into the second locking hole 1012.

[0086] As Figure 6 shown, the connecting mechanism 200 includes a connecting seat 201 and a pin 202. The connecting seat 201 is mounted on the front foot rod 30. The connecting seat 201 is provided with a first mounting groove. The lower handle rod 20 is rotatably mounted in the first mounting groove. The pin 202 is movably disposed on the lower handle rod 20 and is connected to the second flexible member 106. The pin 202 is used to move relative to the lower handle rod 20 when the lower handle rod 20 rotates relative to the connecting seat 201, so as to drive the second flexible member 106 to move.

[0087] The connecting seat 201 is provided with a first inclined surface. The first inclined surface contacts the pin 202 and drives the pin 202 to move when the lower handle rod 20 rotates relative to the connecting seat 201.

[0088] The connecting mechanism 200 further includes a first sleeve 203. The first sleeve 203 is sleeved on the outer periphery of the lower handle rod 20. The outer periphery of the first sleeve 203 is provided with first ribs.

[0089] The connecting seat 201 further has a second mounting groove. The rear foot rod 40 is rotatably mounted in the second mounting groove.

[0090] The connecting mechanism 200 further includes a second sleeve 204 which is sleeved on the outer periphery of the rear foot rod 40, and second ribs are provided on the outer periphery of the second sleeve 204.

[0091] By providing the first sleeve 203 and the second sleeve 204, the rotation of the handle lower rod 20 and the rear foot rod 40 relative to the connecting seat 201 can be realized even when they are non-circular.

[0092] The baby stroller frame further includes a second locking mechanism 300 and an unlocking mechanism. The second locking mechanism 300 is used to lock the handle upper rod 10 and the handle lower rod 20, and the unlocking mechanism is used to unlock the second locking mechanism 300.

[0093] There are various choices for the specific structural form of the unlocking mechanism. For example, in the Figure 1 illustrated embodiment, the unlocking mechanism is provided outside the second locking mechanism 300, and the second locking mechanism 300 can be unlocked by laterally pressing the unlocking mechanism. In other embodiments, the unlocking mechanism can also be provided in the middle of the lateral rod of the handle upper rod 10. The unlocking mechanism provided at this position can be connected to the second locking mechanisms 300 on both sides of the frame at the same time, so as to realize single-handed unlocking.

[0094] The baby stroller frame further includes a seat board 110, a first connecting rod 140 and a second connecting rod 150. The front foot rod 30 is in an inverted T shape. The seat board 110 is connected to the handle lower rod 20. The first end of the first connecting rod 140 is connected to the seat board 110. The second end of the first connecting rod 140 is connected to the second connecting rod 150. The middle part of the first connecting rod 140 is connected to the front foot rod 30, and the second connecting rod 150 is connected to the rear foot rod 40.

[0095] The baby stroller frame further includes a first rear wheel 160, a second rear wheel 170 and a braking mechanism. The first rear wheel 160 and the second rear wheel 170 are rotatably mounted on the rear foot rod 40, and the braking mechanism is used to relatively fix the first rear wheel 160 and the second rear wheel 170 to the rear foot rod 40.

[0096] Such as Figure 9 and 10As shown in the figure, the braking mechanism includes a first shift lever 404, a second shift lever 504, a first rotating seat 403, a brake pedal, a second rotating seat 503, and a third flexible member 400. The first rotating seat 403 is rotatably arranged on the rear foot lever 40. The first rotating seat 403 is used to drive the first shift lever 404 to move along the axial direction of the first rear wheel 160 when rotating relative to the first rear wheel 160, so as to block the rotation of the first rear wheel 160. The brake pedal is installed on the first rotating seat 403. The second rotating seat 503 is rotatably arranged on the rear foot lever 40. The second rotating seat 503 is used to drive the second shift lever 504 to move along the axial direction of the second rear wheel 170 when rotating relative to the second rear wheel 170, so as to block the rotation of the second rear wheel 170. The first end of the third flexible member 400 is connected to the first rotating seat 403, and the second end of the third flexible member 400 is connected to the second rotating seat 503. The third flexible member 400 is used to drive the second rotating seat 503 to rotate after the brake pedal is depressed and drives the first rotating seat 403 to rotate.

[0097] The first rotating seat 403 is provided with a second inclined surface, and the second inclined surface is used to contact the first shift lever 404 and drive the first shift lever 404 to move; and / or, the second rotating seat 503 is provided with a third inclined surface, and the third inclined surface is used to contact the second shift lever 504 and drive the second shift lever 504 to move.

[0098] The first rotating seat 403 is provided with a first stop groove, and the first stop groove is arranged at the end of the second inclined surface to enter the first stop groove after driving the first shift lever 404 to move to a position where it blocks the rotation of the first rear wheel 160; and / or, the second rotating seat 503 is provided with a second stop groove, and the second stop groove is arranged at the end of the third inclined surface to enter the second stop groove after driving the second shift lever 504 to move to a position where it blocks the rotation of the second rear wheel 170.

[0099] In each of the above embodiments, the first flexible member 103, the second flexible member 106, and the third flexible member 400 can be bent but are basically inextensible, and steel wire ropes or the like can be used.

[0100] In each of the above embodiments, the rods can be solid rods or hollow rods (i.e., tubes), such as the upper handle rod 10, the lower handle rod 20, the front foot rod 30, the rear foot rod 40, the support rod 50, the ceiling rod 60, the armrest rod 70, the backrest rod 80, the first connecting rod 140, and the second connecting rod 150, etc., so as to reduce the overall weight of the frame.

[0101] The following combines the attached Figures 1 - 15 Describe the structure and working process of an embodiment of the stroller frame of the present invention:

[0102] Such as Figure 1As shown, the stroller frame includes an upper handlebar 10, a lower handlebar 20, a front foot bar 30, a rear foot bar 40, a support bar 50, a canopy bar 60, an armrest bar 70, a backrest bar 80, and a seat board 110.

[0103] The upper handlebar 10 is connected to the lower handlebar 20, and a second locking mechanism 300 is provided between the upper handlebar 10 and the lower handlebar 20. An unlocking mechanism is also provided on the frame for unlocking the second locking mechanism 300.

[0104] The canopy bar 60 is pivotally connected to one end of the upper handlebar 10 close to the lower handlebar 20. The bottom of the backrest bar 80 is pivotally connected to a backrest adjustment mechanism 130, and the backrest adjustment mechanism 130 is fixed to the lower handlebar 20.

[0105] The top of the support plate 120 is pivotally connected to the armrest bar 70, and the bottom of the support plate 120 is pivotally connected to the seat board 110. The seat board 110 is pivotally connected to the backrest adjustment mechanism 130, the seat adjustment mechanism 90 is pivotally connected to the seat board 110, and the bottom of the armrest bar 70 is pivotally connected to the lower handlebar 20.

[0106] The front foot bar 30, the rear foot bar 40, and the lower handlebar 20 are connected by a connecting mechanism 200. The front foot bar 30 is in an inverted T shape, and the horizontal part of the front foot bar 30 is a footrest 31. When the baby is sitting, the feet can be placed on the footrest 31. The first front wheel 180 and the second front wheel 190 are respectively installed at both ends of the footrest 31. The rear foot bar 40 is in an inverted U shape, and the first rear wheel 160 and the second rear wheel 170 are respectively installed at both ends of the rear foot bar 40.

[0107] The frame further includes a support member 210 provided on the upper handlebar 10 for supporting the rear side of the canopy.

[0108] As Figure 2 shown, the first connecting rod 140 is in a bent shape. The top of the first connecting rod 140 is pivotally connected to the seat board 110, the middle of the first connecting rod 140 is pivotally connected to the front foot bar 30, the bottom of the first connecting rod 140 is pivotally connected to the top of the second connecting rod 150. The second connecting rod 150 is a straight rod, and the bottom of the second connecting rod 150 is pivotally connected to the rear foot bar 40. The top of the support bar 50 is pivotally connected to the lower handlebar 20, and the bottom of the support bar 50 is pivotally connected to the rear foot bar 40.

[0109] As Figure 3 shown, the first locking mechanism includes a sliding sleeve 101, a first lock block 102, a first flexible member 103, a first elastic member 104, a second lock block 105, a second flexible member 106, a fixed seat 107, a slider 108, a first connecting rod 109, a second connecting rod 111, a second elastic member 112, and a third connecting rod 113.

[0110] The sliding sleeve 101 is installed on the outer periphery of the lower handle rod 20. The sliding sleeve 101 is provided with a first locking hole 1011, a second locking hole 1012 and a connecting hole 1013. The first locking hole 1011 is arranged at one end of the sliding sleeve 101 away from the upper handle rod 10, and the second locking hole 1012 is arranged at one end of the sliding sleeve 101 close to the upper handle rod 10. Both the first locking hole 1011 and the second locking hole 1012 are holes with an opening on one side in the circumferential direction. The opening of the first locking hole 1011 faces away from the upper handle rod 10, and the opening of the second locking hole 1012 faces close to the upper handle rod 10. The connecting hole 1013 is used to connect the sliding sleeve 101 and the support rod 50.

[0111] The fixing seat 107 is fixedly installed inside the lower handle rod 20. Grooves are respectively arranged on the top surface and the bottom surface of the fixing seat 107. The slider 108 is U-shaped, and the vertical part includes a first sliding piece and a second sliding piece. When the slider 108 is inserted on the fixing seat 107, the first sliding piece and the second sliding piece are respectively stuck in the grooves on the top surface and the bottom surface of the fixing seat 107. Blocking parts are arranged on three sides (i.e., the front side, the rear side and the right side) of the groove, which have a limiting effect on the first sliding piece and the second sliding piece.

[0112] The fixing seat 107 is provided with a first locking cavity and a second locking cavity. Fourth holes 1071, fifth holes 1072 and sixth holes 1073 are respectively arranged on the top surface and the bottom surface of the fixing seat 107. The fourth hole 1071 on the top surface and the fourth hole 1071 on the bottom surface are exactly opposite and communicate with the first locking cavity. The fifth hole 1072 on the top surface and the fifth hole 1072 on the bottom surface are exactly opposite and communicate with the second locking cavity.

[0113] A first elastic member 104 is arranged in the second locking cavity, and the first elastic member 104 is connected with the first locking block 102. A second elastic member 112 is arranged in the first locking cavity, and the second elastic member 112 is connected with the second locking block 105.

[0114] First holes 1081, second holes 1082 and third holes 1083 are respectively arranged on the first sliding piece and the second sliding piece of the slider 108. The first hole 1081 is in the shape of a long strip hole inclined relative to the extending direction of the second flexible member 106. The second hole 1082 is in the shape of a right triangle, and the two right sides are respectively parallel and perpendicular to the extending direction of the second flexible member 106. The third hole 1083 is also in the shape of a long strip hole, and its length direction is parallel to the extending direction of the second flexible member 106.

[0115] As Figure 4As shown, the first connecting rod 109 passes through the first hole 1081 on the first sliding piece of the slider 108, the fourth hole 1071 on the fixed seat 107, the first locking cavity on the fixed seat 107, and the first hole 1081 on the second sliding piece of the slider 108. The second connecting rod 111 passes through the second hole 1082 on the first sliding piece of the slider 108, the fifth hole 1072 on the fixed seat 107, the second locking cavity on the fixed seat 107, and the second hole 1082 on the second sliding piece of the slider 108. The third connecting rod 113 passes through the third hole 1083 on the first sliding piece of the slider 108, the sixth hole 1073 on the fixed seat 107, and the third hole 1083 on the second sliding piece of the slider 108.

[0116] As Figure 5 shown, the second locking mechanism 300 includes a turntable connected to the upper handle rod 10. When the upper handle rod 10 rotates relative to the lower handle rod 20, the turntable rotates together. The first flexible member 103 is fixedly connected to the turntable. Therefore, when the turntable rotates, it drives the first flexible member 103 to move towards the upper handle rod 10, thereby driving the first locking block 102 to retract and realizing the unlocking of the first locking block 102. After the first locking block 102 is unlocked, even if the second locking block 105 still extends and is in the locked state, it will not affect the movement of the sliding sleeve 101 relative to the lower handle rod 20 in the direction away from the upper handle rod 10.

[0117] As Figure 6 shown, the connecting mechanism 200 connects the lower handle rod 20, the front foot rod 30, and the rear foot rod 40.

[0118] As Figure 7 shown, the connecting mechanism 200 includes a connecting seat 201, a pin 202, a first sleeve 203, and a second sleeve 204. The connecting seat 201, the first sleeve 203, and the second sleeve 204 are all split structures.

[0119] The connecting seat 201 includes an upper seat body and a lower seat body. The upper seat body is fixedly installed on the front foot rod 30, and the upper seat body is buckled above the lower seat body. After the upper seat body and the lower seat body are buckled, they are connected and fixed by a connecting pin 207.

[0120] The connecting seat 201 is internally provided with a first installation groove and a second installation groove, and both the first installation groove and the second installation groove are cylindrical in shape. The first sleeve 203 includes an upper tube body and a lower tube body. The upper tube body is installed in the upper seat body, and the lower tube body is installed in the lower seat body. The upper tube body is buckled above the lower tube body. The upper tube body and the lower tube body are sleeved on the outer periphery of the lower handle rod 20 and are fixedly connected to the lower handle rod 20 by a first rivet 205. The second sleeve 204 includes a front tube body and a rear tube body. The front tube body is buckled in front of the rear tube body. The front tube body and the rear tube body are sleeved on the outer periphery of the rear foot rod 40 and are fixedly connected to the rear foot rod 40 by a second rivet 206. The front tube body and the rear tube body are arranged in the second installation groove of the connecting seat 201.

[0121] The middle section of the first sleeve 203 has a smaller diameter than the diameters at both ends. There are two first limiting holes provided at the position where the diameter is smaller in the middle section. At the position on the lower handle rod 20 wrapped by the first sleeve 203, there are two second limiting holes corresponding to the first limiting holes. Two pins 202 are respectively passed through the corresponding first limiting holes and second limiting holes and are arranged in the first sleeve 203 and the lower handle rod 20. Both the first limiting holes and the second limiting holes are long holes, and their length directions are parallel to the transverse direction (left - right direction) of the lower handle rod 20 and parallel to the extending direction of the second flexible member 106. A collar is provided at the end of the second flexible member 106, and the pin 202 is inserted into the collar.

[0122] On the inner wall of the first installation groove of the connection seat 201, there is a first inclined surface, and the first inclined surface is a spiral protrusion. There is an included angle between the circle formed by the protrusion and the radial cross - section of the first installation groove. When the lower handle rod 20 drives the first sleeve 203 to rotate relative to the connection seat 201, the pin 202 rotates together with the first sleeve 203. During the rotation process, under the action of the first inclined surface, the pin 202 moves transversely, thereby driving the left and right second flexible members 106 to move relative to each other, as Figure 8 shown, and then driving the second lock block 105 to retract, unlocking the second lock block 105. At the same time, the slider 108 can also keep the first lock block 102 still in the unlocked state, so that the sliding sleeve 101 can move up or down along the lower handle rod 20.

[0123] A handle 208 is provided at the top of the connection seat 201. The handle 208 is installed on the connection seat 201 through a third rivet 209. After the frame is folded, the entire frame can be lifted through the handle 208, which is convenient for moving the frame.

[0124] As Figure 9 shown, the braking mechanism includes a brake pedal, a first shift lever 404, a second shift lever 504, a first rotating seat 403, a second rotating seat 503, and a third flexible member 400.

[0125] A connecting rod is provided between the two bottom ends of the rear foot rod 40. The braking mechanism includes a first mounting seat 401 and a second mounting seat 501. The first mounting seat 401 is connected to the bottom end of one side of the rear foot rod 40 and is also connected to the connecting rod. The second mounting seat 501 is connected to the bottom end of the other side of the rear foot rod 40 and is also connected to the connecting rod. The third flexible member 400 is passed through the first mounting seat 401, the connecting rod, and the second mounting seat 501.

[0126] The first mounting seat 401 is mounted on the first support seat 402, and the second mounting seat 501 is mounted on the second support seat 502. A third elastic member 406 is provided between the first mounting seat 401 and the first support seat 402, and a fourth elastic member 506 is provided between the second mounting seat 501 and the second support seat 502 to avoid the overall vibration of the vehicle frame.

[0127] The outer side of the first rotating seat 403 is rotatably mounted on the inner side of the first support seat 402. The first baffle 408 is mounted on the inner side of the first rotating seat 403 by a fourth rivet 409. The first rear wheel 160 is mounted on the outer side of the first support seat 402. The outer side of the second rotating seat 503 is rotatably mounted on the inner side of the second support seat 502. The second baffle 508 is mounted on the inner side of the second rotating seat 503 by a fifth rivet 509. The second rear wheel 170 is mounted on the outer side of the second support seat 502.

[0128] One end of the third flexible member 400 is connected to the first rotating seat 403, and the other end is connected to the second rotating seat 503.

[0129] The first rotating seat 403 is provided with a second inclined surface, which is used to contact the first shift lever 404 during the rotation of the first rotating seat 403, and then drive the first shift lever 404 to extend axially. After extension, it is inserted into the spoke gap of the first rear wheel 160 to block the continuous rotation of the first rear wheel 160. The second rotating seat 503 is provided with a third inclined surface, which is used to contact the second shift lever 504 during the rotation of the second rotating seat 503, and then drive the second shift lever 504 to extend axially. After extension, it is inserted into the spoke gap of the second rear wheel 170 to block the continuous rotation of the second rear wheel 170, achieving the braking purpose.

[0130] A fifth elastic member 407 is further provided between the first rotating seat 403 and the first support seat 402. The fifth elastic member 407 is used to assist the first shift lever 404 to reset to release the blocking effect on the first rear wheel 160. A sixth elastic member 507 is further provided between the second rotating seat 503 and the second support seat 502. The sixth elastic member 507 is used to assist the second shift lever 504 to reset to release the blocking effect on the second rear wheel 170.

[0131] The first rotating seat 403 is also provided with a first stop groove, which is arranged at the end of the second inclined surface. In this way, when the second inclined surface drives the first stop lever 404 to move to a position where it can block the rotation of the first rear wheel 160, the first stop lever 404 can enter the first stop groove, so as to ensure that the first stop lever 404 will not automatically reset in the braking state, and the first rear wheel 160 can continue to rotate. The second rotating seat 503 is provided with a second stop groove, which is arranged at the end of the third inclined surface. In this way, when the third inclined surface drives the second stop lever 504 to move to a position where it can block the rotation of the second rear wheel 170, the second stop lever 504 can enter the second stop groove to prevent the second stop lever 504 from accidentally resetting. When it is necessary to release the braking state, just push the cart slightly, and the first stop lever 404 can be disengaged from the first stop groove, and the second stop lever 504 can be disengaged from the second stop groove.

[0132] The first rear wheel 160 is installed on the outside of the first support seat 402 through a first pin. The first retaining piece 405 is inserted into the jack of the first support seat 402 and into the groove of the first pin to realize the relative fixation of the first rear wheel 160 and the first support seat 402; when removing the first rear wheel 160, pull out the first retaining piece 405, and the first rear wheel 160 can be quickly disassembled. The second rear wheel 170 is installed on the outside of the second support seat 502 through a second pin. The second retaining piece 505 is inserted into the jack of the second support seat 502 and into the groove of the second pin to realize the relative fixation of the second rear wheel 170 and the second support seat 502; when removing the second rear wheel 170, pull out the second retaining piece 505, and the second rear wheel 170 can be quickly disassembled.

[0133] As Figure 10 shown, the brake pedal is installed on the first rotating seat 403.

[0134] Frame folding process:

[0135] As Figure 11 shown, first fold the ceiling rod 60 upward so that it is basically parallel to the upper handle rod 10;

[0136] Then, as Figure 12 shown, operate the unlocking mechanism to unlock the second locking mechanism, and then fold the upper handle rod 10 downward so that the ceiling rod 60 and the upper handle rod 10 are folded backward below the lower handle rod 20 and are basically parallel to the lower handle rod 20;

[0137] During the rotation of the upper handle rod 10 relative to the lower handle rod 20, the turntable 301 drives the first flexible member 103 to move upward, and then drives the first lock block 102 to retract, and the first locking mechanism is partially unlocked. At this time, as Figure 13As shown, the sliding sleeve 101 can move downward relative to the lower handle rod 20. Therefore, the canopy rod 60, the upper handle rod 10, and the lower handle rod 20 can rotate forward together until the lower handle rod 20 is substantially in a straight line with the rear foot rod 40;

[0138] When the lower handle rod 20 is folded upward, that is, rotated relative to the front foot rod 30 and the rear foot rod 40, the first inclined plane in the connecting seat 201 drives the pin 202 to move laterally, driving the two second flexible members 106 to move relative to each other, and further causing the second lock block 105 to retract, and the first locking mechanism is fully unlocked. At this time, as Figure 14 shown, the sliding sleeve 101 can move upward relative to the lower handle rod 20 until it passes over the fixed seat 107 and continues to move upward, so that the canopy rod 60, the upper handle rod 10, and the lower handle rod 20 can continue to fold forward until they overlap with the front foot rod 30, as Figure 15 shown. At this time, the frame of the stroller is in a fully folded state, and the volume shrinks to the minimum.

[0139] Braking process:

[0140] When the brake pedal is depressed, the first rotating seat 403 rotates. During the rotation, the second inclined plane drives the first shift lever 404 to extend axially and insert into the spoke gap of the first rear wheel 160, thereby blocking the first rear wheel 160 from continuing to rotate.

[0141] When the first rotating seat 403 rotates, it can drive the second rotating seat to rotate through the third flexible member 400. During the rotation, the third inclined plane drives the second shift lever 504 to extend axially and insert into the spoke gap of the second rear wheel 170, thereby blocking the second rear wheel 170 from continuing to rotate, thus achieving the purpose of braking.

[0142] Based on the above stroller frame, the present invention also provides a stroller, which includes the above stroller frame.

[0143] The positive technical effects of the stroller frame in the above various embodiments are equally applicable to the stroller, and will not be elaborated here.

[0144] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: without departing from the principle of the present invention, modifications can still be made to the specific embodiments of the present invention or equivalent substitutions can be made to some technical features, and these modifications and equivalent substitutions should be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A baby stroller frame, It is characterized in that include: Handlebar upper rod (10); A handlebar lower rod (20) connected to the handlebar upper rod (10); Front foot bar (30); rear foot bar (40); A support rod (50), a first end of which is connected to the handlebar lower rod (20), and a second end of which is connected to the rear foot rod (40); a first locking mechanism (100) for locking the handlebar lower rod (20) and the support rod (50), and partially unlocking the handlebar upper rod (10) and the handlebar lower rod (20) after they are relatively folded, so that the first end of the support rod (50) can slide relative to the handlebar lower rod (20) in a direction away from the handlebar upper rod (10), the first locking mechanism (100) comprising a sliding sleeve (101), the sliding sleeve (101) being sleeved on the handlebar lower rod (20) and connected to the first end of the support rod (50), and a first locking hole (1011) being provided at one end of the sliding sleeve (101) away from the handlebar upper rod (10); and a connecting mechanism (200) for connecting the front foot rod (30), the rear foot rod (40) and the handlebar lower rod (20), and driving the first locking mechanism (100) to be completely unlocked after the handlebar lower rod (20) rotates relative to the front foot rod (30) and the rear foot rod (40), so that the support rod (50) can slide relative to the handlebar lower rod (20) in a direction close to the handlebar upper rod (10); Wherein, a second locking hole (1012) is provided at one end of the sliding sleeve (101) close to the handlebar upper rod (10), and the first locking mechanism (100) further comprises: a second locking block (105) inserted into the second locking hole (1012) and used to restrict the sliding sleeve (101) from moving from a position locked relative to the handlebar lower rod (20) toward a direction approaching the handlebar upper rod (10); and A second flexible member (106), a first end of which is connected to the second locking block (105), and a second end of which is connected to the connecting mechanism (200), is used to drive the second locking block (105) to disengage from the second locking hole (1012) when the handlebar lower rod (20) rotates relative to the front foot rod (30) and the rear foot rod (40), so as to release the restriction on the movement of the sliding sleeve (101) in a direction close to the handlebar upper rod (10).

2. The baby stroller frame according to claim 1, It is characterized in that The first locking mechanism (100) further comprises: a first locking block (102) inserted into the first locking hole (1011) and used to restrict the sliding sleeve (101) from moving from a position locked relative to the handlebar lower rod (20) in a direction away from the handlebar upper rod (10); and The first flexible member (103), having its first end connected to the upper handle rod (10) and its second end connected to the first locking block (102), is configured to drive the first locking block (102) out of the first locking hole (1011) when the upper handle rod (10) folds relative to the lower handle rod (20), so as to release the restriction on the movement of the sliding sleeve (101) in a direction away from the upper handle rod (10).

3. The stroller frame according to claim 2, wherein, the first locking mechanism (100) further includes a first elastic member (104) configured to drive the first locking block (102) that has disengaged from the first locking hole (1011) to re-insert into the first locking hole (1011).

4. The stroller frame according to claim 1, wherein, the first locking mechanism (100) further includes: a fixed seat (107) disposed inside the lower handle rod (20) and having a first locking cavity for accommodating the second locking block (105); a slider (108) slidably disposed relative to the fixed seat (107), having its end remote from the upper handle rod (10) connected to the second flexible member (106), and having a first hole (1081), the shape of the first hole (1081) being configured to drive the second locking block (105) to extend out of or retract into the first locking cavity when the slider (108) moves relative to the fixed seat (107); and a first connecting rod (109) connected to the second locking block (105) and inserted into the first hole (1081).

5. The stroller frame according to claim 4, wherein, the fixed seat (107) further has a second locking cavity for accommodating the first locking block (102), the first locking block (102) moves relative to the fixed seat (107) under the action of the first flexible member (103) to extend out of or retract into the second locking cavity, the slider (108) has a second hole (1082), the first locking mechanism (100) further includes a second connecting rod (111), the second connecting rod (111) is connected to the first locking block (102) and inserted into the second hole (1082), and the shape of the second hole (1082) is configured to drive the first locking block (102) to retract into the second locking cavity under the action of the first flexible member (103) and drive the first locking block (102) to move along the extension direction of the second flexible member (106) when the slider (108) moves relative to the fixed seat (107).

6. The stroller frame according to claim 1, wherein, the first locking mechanism (100) further includes a second elastic member (112) configured to drive the second locking block (105) that has disengaged from the second locking hole (1012) to re-insert into the second locking hole (1012).

7. The stroller frame according to claim 1, wherein, the connecting mechanism (200) includes: The connecting seat (201) is installed on the front foot rod (30) and is provided with a first installation groove, and the lower handle rod (20) is rotatably installed in the first installation groove; and The pin (202) is movably arranged on the lower handle rod (20) and is connected to the second flexible member (106), and is used for moving relative to the lower handle rod (20) when the lower handle rod (20) rotates relative to the connecting seat (201), so as to drive the second flexible member (106) to move.

8. The baby stroller frame according to claim 7, wherein, The connecting seat (201) is provided with a first inclined surface, and the first inclined surface contacts the pin (202) and drives the pin (202) to move when the lower handle rod (20) rotates relative to the connecting seat (201).

9. The baby stroller frame according to claim 7, wherein, The connecting mechanism (200) further includes a first sleeve (203), the first sleeve (203) is sleeved on the outer periphery of the lower handle rod (20), and the outer periphery of the first sleeve (203) is provided with first ribs.

10. The baby stroller frame according to claim 7, wherein, A second installation groove is further provided in the connecting seat (201), and the rear foot rod (40) is rotatably installed in the second installation groove.

11. The baby stroller frame according to claim 10, wherein, The connecting mechanism (200) further includes a second sleeve (204), the second sleeve (204) is sleeved on the outer periphery of the rear foot rod (40), and the outer periphery of the second sleeve (204) is provided with second ribs.

12. The baby stroller frame according to claim 1, wherein, It further includes: A second locking mechanism (300) for locking the upper handle rod (10) and the lower handle rod (20); and An unlocking mechanism for unlocking the second locking mechanism (300).

13. The baby stroller frame according to claim 1, wherein, It further includes a seat board (110), a first connecting rod (140) and a second connecting rod (150), the front foot rod (30) is in an inverted T shape, the seat board (110) is connected to the lower handle rod (20), the first end of the first connecting rod (140) is connected to the seat board (110), the second end of the first connecting rod (140) is connected to the second connecting rod (150), the middle part of the first connecting rod (140) is connected to the front foot rod (30), and the second connecting rod (150) is connected to the rear foot rod (40).

14. The baby stroller frame according to claim 1, wherein, It further includes a first rear wheel (160), a second rear wheel (170) and a braking mechanism, the first rear wheel (160) and the second rear wheel (170) are rotatably installed on the rear foot rod (40), and the braking mechanism is used to relatively fix the first rear wheel (160) and the second rear wheel (170) to the rear foot rod (40).

15. The baby stroller frame according to claim 14, wherein, The braking mechanism includes: A first shift lever (404); A second shift lever (504); A first rotating seat (403), rotatably arranged on the rear foot rod (40), and used for driving the first shift lever (404) to move along the axial direction of the first rear wheel (160) when rotating relative to the first rear wheel (160), so as to block the rotation of the first rear wheel (160); A brake pedal, mounted on the first rotating seat (403); A second rotating seat (503), rotatably arranged on the rear foot rod (40), and used for driving the second shift lever (504) to move along the axial direction of the second rear wheel (170) when rotating relative to the second rear wheel (170), so as to block the rotation of the second rear wheel (170); and A third flexible member (400), whose first end is connected to the first rotating seat (403), and whose second end is connected to the second rotating seat (503), and is used for driving the second rotating seat (503) to rotate after the brake pedal is depressed and drives the first rotating seat (403) to rotate.

16. The stroller frame according to claim 15, wherein, The first rotating seat (403) is provided with a second inclined surface, and the second inclined surface is used for contacting the first shift lever (404) and driving the first shift lever (404) to move; and / or, the second rotating seat (503) is provided with a third inclined surface, and the third inclined surface is used for contacting the second shift lever (504) and driving the second shift lever (504) to move.

17. The stroller frame according to claim 16, wherein, The first rotating seat (403) is provided with a first stop groove, and the first stop groove is arranged at the end of the second inclined surface, so as to enter the first stop groove after driving the first shift lever (404) to move to a position where it blocks the rotation of the first rear wheel (160); and / or, the second rotating seat (503) is provided with a second stop groove, and the second stop groove is arranged at the end of the third inclined surface, so as to enter the second stop groove after driving the second shift lever (504) to move to a position where it blocks the rotation of the second rear wheel (170).

18. A stroller, wherein, It includes the stroller frame according to any one of claims 1 to 17.

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