A reversible baby carriage seat frame structure

Abstract

The invention provides a reversible baby stroller seat frame structure that does not require disassembly operation when folding the stroller, comprising two swivel connecting seats and a seat frame detachably connected to the two swivel connecting seats, the swivel connecting seats are provided with a latch pin for locking the swivel connecting seats, two sides of the seat frame are provided with mounting seats detachably connected to the swivel connecting seats, a seat locking assembly is provided between the mounting seat and the swivel connecting seat, a backrest rod is spanned between the two mounting seats, a swivel seat is provided between the end of the backrest rod and the mounting seat, which can enable the backrest rod to rotate relative to the mounting seat, a backrest locking assembly for locking the swivel seat is provided between the swivel seat and the mounting seat, a backrest unlocking assembly for unlocking the backrest locking assembly is provided on the backrest rod, the swivel seat is provided with an arc-shaped recess arranged along its rotation direction for avoiding the latch pin so that the latch pin can slide in the arc-shaped recess when the swivel seat is rotated, and a guiding inclined surface is provided at the end of the arc-shaped recess for pushing the latch pin out to unlock the swivel connecting seat.

Description

[Technical field]

[0001] The invention relates to the field of baby carriages, in particular to a reversible baby carriage seat frame structure. [Background technology]

[0002] In a conventional baby stroller frame with a reversible seat, when the seat needs to be reversible, the seat needs to be removed from the frame first, and then the reversible seat is installed on the frame to achieve the seat reversal. When the frame needs to be folded, the seat needs to be removed first, and then the frame is folded. When storing, the seat and the frame need to be stored separately, which takes up a lot of space. In addition, the seat needs to be reinstalled on the frame when it is used next time, which is very inconvenient. [Summary of the invention]

[0003] The technical problem to be solved by the present invention is to provide a reversible baby carriage seat frame structure which does not require disassembly operation when folding the baby carriage.

[0004] The object of the present invention is achieved in that:

[0005] A reversible baby stroller seat frame structure comprises two rotating connecting seats rotatably arranged on the inner sides of two baby stroller joints and a seat frame detachably connected to the two rotating connecting seats, the rotating connecting seats are provided with a latch pin which can be inserted into a latch hole on the inner side of the baby stroller joint to lock the rotating connecting seats, two sides of the seat frame are provided with mounting seats detachably connected to the rotating connecting seats so that the seat frame can be removed from the rotating connecting seats and reversed, a seat locking assembly for locking the mounting seat is provided between the mounting seat and the rotating connecting seat, and a backrest is provided between the two mounting seats. A rod, a rotating seat is provided between the end of the backrest rod and the mounting seat, which can enable the backrest rod to rotate relative to the mounting seat, a backrest locking assembly is provided between the rotating seat and the mounting seat, and a backrest unlocking assembly is provided on the backrest rod for unlocking the backrest locking assembly, and an arc-shaped recess is provided on the rotating seat along its rotation direction for avoiding the bayonet so that the bayonet can slide in the arc-shaped recess when the rotating seat rotates, and a guiding inclined surface is provided at the end of the arc-shaped recess for pushing the bayonet out to unlock the rotating connecting seat.

[0006] The present invention adopts the above structure, and the seat frame can be reversible relative to the baby carriage frame through the detachable connection between the mounting seats on both sides of the seat frame and the rotating connecting seat. When normally deployed and used, the backrest locking assembly locks the rotating seat, thereby fixing the rotating seat and the backrest rod to the mounting seat, and the mounting seat is fixed to the rotating connecting seat through the seat locking assembly, and the rotating connecting seat is locked by the bayonet pin being engaged in the inner clamping hole of the baby carriage joint, so that the seat frame is stably fixed to the baby carriage frame for use. When the baby carriage frame needs to be folded, the backrest locking assembly is first unlocked through the backrest unlocking assembly, so that the rotating seat can be rotated relative to the mounting seat and the backrest rod is folded. During the rotation of the rotating seat, the latch can slide in the arc-shaped notch of the rotating seat. When the latch slides along the arc-shaped notch to the guiding inclined surface at the end, the rotating seat pushes the latch out to make it disengage from the latch hole and unlocks the rotating connecting seat, so that the rotating connecting seat and the seat frame can be rotated and folded relative to the baby carriage frame as a whole. Finally, the baby carriage frame is folded to complete the folding of the whole vehicle. Therefore, the present invention can be integrated with the baby carriage frame before and after the seat is reversing without disassembly operation, which is very convenient. Moreover, the seat and the baby carriage frame can be stored as a whole after folding, saving storage space. When used next time, there is no need to install it again, which is very convenient.

[0007] As described above, a reversible baby carriage seat frame structure, the lower end of the rotating connection seat is provided with a protrusion, the bayonet includes a pin that can be telescopically movable in the protrusion to penetrate the rotating connection seat and be inserted into the locking hole, and a pin connecting piece arranged at the end of the pin, the pin connecting piece can slide relative to the arc-shaped recess when the rotating seat rotates, and push the pin out to disengage from the locking hole when sliding to the guide inclined surface. In normal use, the pin of the bayonet is inserted into the inner locking hole of the baby carriage joint to lock the rotating connection seat, and the pin connecting piece is located in the arc-shaped recess of the rotating seat. When the car needs to be folded, the backrest rod is first folded, and the rotating seat rotates to make the pin connecting piece slide in the arc-shaped recess of the rotating seat. When the pin connecting piece slides along the arc-shaped recess to the guide inclined surface at the end, the rotating seat pushes the pin connecting piece together with the pin to make the pin disengage from the locking hole and unlock the rotating connection seat, so that the rotating connection seat and the seat frame can be rotated and folded relative to the baby carriage frame.

[0008] In the reversible baby carriage seat frame structure as described above, the mounting seat is provided with a clamping sleeve, and correspondingly, the rotating connecting seat is provided with a clamping block that is clamped and connected to the clamping sleeve. The clamping connection between the clamping block and the clamping sleeve can realize a detachable connection between the seat frame and the rotating connecting seat, thereby realizing the reversal of the seat.

[0009] In the above-mentioned reversible baby carriage seat frame structure, the seat locking assembly includes a bayonet provided on the front and rear sides of the bayonet block, a bayonet column provided in the mounting seat and elastically retractable relative to the clamping sleeve to be connected with the bayonet by a buckle, and an unlocking pressing block protruding from the mounting seat and used to disengage the bayonet column from the bayonet. When the seat frame is mounted on the rotating connecting seat, the bayonet column is elastically engaged with the bayonet on the front or rear side of the bayonet block, thereby locking the seat frame. When the seat frame needs to be removed, the unlocking pressing block needs to be pressed to disengage the bayonet column from the bayonet, at which time the seat frame is unlocked and can be removed from the rotating connecting seat.

[0010] In the above-mentioned reversible baby carriage seat frame structure, the backrest locking assembly includes a toothed groove provided on the inner side of the mounting seat and a movable block movably provided between the mounting seat and the rotating seat, and the upper and lower ends of the movable block are provided with limiting bosses respectively connected to the toothed grooves on the upper and lower sides of the mounting seat, and the backrest locking assembly also includes an elastic pressing member provided in the backrest rod and used to press the movable block so that the limiting boss is inserted into the toothed groove. When the backrest is normally deployed and used, the limiting boss is inserted into the toothed groove under the pressing action of the elastic pressing member, so that the rotating seat is fixed on the mounting seat.

[0011] In the above-mentioned reversible baby carriage seat frame structure, the inner side of the mounting seat is provided with an arc-shaped guide groove connected with the tooth-shaped groove so that the limiting protrusion can slide therein to adjust the position of the limiting protrusion relative to the tooth-shaped groove. When the limiting protrusion is separated from the tooth-shaped groove, the backrest rod and the rotating seat can rotate relative to the mounting seat, and the limiting protrusion slides in the arc-shaped guide groove, so that the limiting protrusion can slide to other positions of the tooth-shaped groove to adjust the angle of the backrest rod, and the limiting protrusion can also slide in the arc-shaped guide groove to retract the backrest rod.

[0012] In the above-mentioned reversible baby carriage seat frame structure, the backrest unlocking assembly comprises an unlocking block provided on the backrest rod and a pull cord provided in the backrest rod and used to pull the movable block to make the limiting protrusion disengage from the toothed groove, and the two ends of the pull cord are respectively connected to the unlocking block and the movable block. By bending the unlocking block, the pull cord can pull the movable block to overcome the elastic force of the elastic top pressure piece and make the limiting protrusion disengage from the toothed groove, so that the backrest rod can be adjusted in angle or retracted.

Brief Description of the Drawings

[0013] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2It is a schematic diagram of the connection structure between the rotating connection seat and the joint of the baby carriage according to the present invention;

[0016] Figure 3 It is a structural schematic diagram of the seat frame of the present invention;

[0017] Figure 4 It is a structural schematic diagram of the rotating connecting seat of the present invention;

[0018] Figure 5 It is a partial structural schematic diagram of the seat locking assembly of the present invention;

[0019] Figure 6 This is a schematic diagram of the inner structure of the mounting seat of the present invention;

[0020] Figure 7 It is a structural schematic diagram of the back-rest locking assembly of the present invention;

[0021] Figure 8 A reference diagram of the backrest rod of the present invention when it is folded;

[0022] Fig. 9 A reference diagram of the use state of the baby carriage frame applicable to the present invention when the whole carriage is folded;

[0023] Fig.10 A reference diagram of the use state of the backrest rod when it is folded after the direction is reversed in the present invention;

[0024] Fig.11 This is a reference diagram of the use state of the baby carriage frame applicable to the present invention after the reversal when the whole carriage is folded. [Specific implementation method]

[0025] A reversible baby stroller seat frame structure, comprising two rotating connecting seats 1 rotatably arranged on the inner sides of two baby stroller joints 10 and a seat frame 2 detachably connected to the two rotating connecting seats 1, the rotating connecting seat 1 is provided with a latch pin 11 that can be inserted into a latch hole 101 inside the baby stroller joint 10 to lock the rotating connecting seat 1, and both sides of the seat frame 2 are provided with mounting seats 21 detachably connected to the rotating connecting seat 1 so that the seat frame 2 can be removed from the rotating connecting seat 1 and reversed, a seat locking assembly 3 for locking the mounting seat 21 is provided between the mounting seat 21 and the rotating connecting seat 1, and a locking assembly 3 for locking the mounting seat 21 is provided between the two mounting seats 21 A backrest rod 4 is straddled, and a rotating seat 5 is provided between the end of the backrest rod 4 and the mounting seat 21, which allows the backrest rod 4 to rotate relative to the mounting seat 21; a backrest locking assembly 6 is provided between the rotating seat 5 and the mounting seat 21, and a backrest unlocking assembly 7 for unlocking the backrest locking assembly 6 is provided on the backrest rod 4; an arc-shaped recess 51 is provided on the rotating seat 5 along its rotation direction for avoiding the bayonet 11 so that the bayonet 11 can slide in the arc-shaped recess 51 when the rotating seat 5 rotates; a guide inclined surface 52 is provided at the end of the arc-shaped recess 51 for pushing the bayonet 11 out to unlock the rotating connecting seat 1.

[0026] A protrusion 12 is provided at the lower end of the rotating connecting seat 1, and the locking pin 11 includes a pin 111 that can be telescopically movable in the protrusion 12 to penetrate the rotating connecting seat 1 and be locked in the locking hole 101, and a pin connecting piece 112 provided at the end of the pin 111. The pin connecting piece 112 can slide relative to the arc-shaped recess 51 when the rotating seat 5 rotates and push the pin 111 out to disengage from the locking hole 101 when sliding to the guide inclined surface 52. During normal use, the pin 111 of the latch 11 is inserted into the inner clamping hole 101 of the baby carriage joint to lock the rotating connection seat 1, and the pin connecting piece 112 is located in the arc-shaped recess 51 of the rotating seat 5. When the baby carriage needs to be folded, the backrest rod 4 is first folded, and the rotating seat 5 rotates to make the pin connecting piece 112 slide in the arc-shaped recess 51 of the rotating seat 5. When the pin connecting piece 112 slides along the arc-shaped recess 51 to the guiding inclined surface 52 at the end, the rotating seat 5 pushes out the pin connecting piece 112 together with the pin 111 to make the pin 111 disengage from the clamping hole 101 and unlock the rotating connection seat 1, so that the rotating connection seat 1 and the seat frame 2 can be rotated and folded relative to the baby carriage frame. In order to prevent the pin 111 from falling off the protrusion 12, a limiting boss (not shown in the figure) can be set in the protrusion 12.

[0027] A clamping sleeve 211 is provided on the mounting seat 21, and correspondingly, a clamping block 13 which is clamped to the clamping sleeve 211 is provided on the rotating connecting seat 1. The clamping connection between the clamping block 13 and the clamping sleeve 211 can realize a detachable connection between the seat frame 2 and the rotating connecting seat 1, thereby realizing the reversal of the seat.

[0028] The seat locking assembly 3 includes a bayonet 31 provided on both sides of the front and rear of the bayonet block 13, a bayonet post 32 provided in the mounting seat 21 and elastically retractable relative to the clamping sleeve 211 to be snap-connected with the bayonet 31, and an unlocking pressing block 33 protruding from the mounting seat 21 and used to disengage the bayonet post 32 from the bayonet 31. A pressing spring for pressing the bayonet post 32 to elastically snap into the bayonet 31 is also provided in the mounting seat 21. When the seat frame 2 is mounted on the rotating connecting seat 1, the bayonet post 32 is elastically snapped into the bayonet 31 on the front or rear side of the bayonet block 13 under the pressing action of the pressing spring (when the seat frame 2 is not reversed, such as Figure 1 or Figure 8 As shown, the seat frame 2 faces forward, and the clamping column 21 is clamped on the clamping hole 31 on the front side of the clamping block 13; when the seat frame 2 is reversed, as shown in FIG. Fig.10 As shown, the seat frame 2 faces backward, and the clamping column 21 is clamped on the clamping hole 31 on the rear side of the clamping block 13), thereby locking the seat frame 2. When the seat frame 2 needs to be removed, the unlocking pressing block 33 needs to be pressed to disengage the clamping column 32 from the clamping hole 31. At this time, the seat frame 2 is unlocked and can be removed from the rotating connecting seat 1.

[0029] The backrest locking assembly 6 includes a toothed groove 61 provided on the inner side of the mounting seat 21 and a movable block 62 movably provided between the mounting seat 21 and the rotating seat 5. The upper and lower ends of the movable block 62 are provided with limiting bosses (not shown in the figure) respectively connected with the toothed grooves 61 on the upper and lower sides of the mounting seat 21. The backrest locking assembly 6 also includes an elastic pressing member provided in the backrest rod 4 and used to press the movable block 62 so that the limiting boss is inserted into the toothed groove 61. When the backrest is normally deployed and used, the limiting boss is inserted into the toothed groove 61 under the pressing action of the elastic pressing member, so that the rotating seat 5 is fixed on the mounting seat 21. The elastic pressing member is preferably a spring.

[0030] The inner side of the mounting seat 21 is provided with an arc-shaped guide groove 64 connected with the tooth-shaped groove 61 for the limiting boss to slide therein to adjust the position of the limiting boss relative to the tooth-shaped groove 61. When the limiting boss is separated from the tooth-shaped groove 61, the backrest rod 4 and the rotating seat 5 can rotate relative to the mounting seat 21, and the limiting boss slides in the arc-shaped guide groove 64, so that the limiting boss can slide to other positions of the tooth-shaped groove 61 to adjust the angle of the backrest rod 4, and the limiting boss can also slide in the arc-shaped guide groove 64 to retract the backrest rod 4.

[0031] The backrest unlocking assembly 7 comprises an unlocking block 71 disposed on the backrest rod 4 and a pull rope (not shown in the figure) disposed in the backrest rod 4 and used to pull the movable block 62 to make the limiting protrusion disengage from the toothed groove 61, and the two ends of the pull rope are respectively connected to the unlocking block 71 and the movable block 62. By bending the unlocking block 71, the pull rope can pull the movable block 62 to overcome the elastic force of the elastic pressing member and make the limiting protrusion disengage from the toothed groove 62, so that the backrest rod 4 can be adjusted in angle or retracted.

[0032] When the present invention is deployed and used normally, the backrest locking assembly 6 locks the rotating seat 5, thereby fixing the rotating seat 5 and the backrest rod 4 to the mounting seat 21, and the mounting seat 21 is fixed to the rotating connection seat 1 through the seat locking assembly 3, and the rotating connection seat 1 is locked by the bayonet 11 being engaged in the inner clamping hole 101 of the baby carriage joint, so that the seat frame 2 is stably fixed on the baby carriage frame for use. During use, if the angle of the backrest rod 4 needs to be adjusted, the unlocking block 71 can be moved to make the pull rope pull the movable block 62 to overcome the elastic force of the elastic top pressure piece and make the limiting protrusion disengage from the toothed groove 62, and then the backrest rod 4 can be rotated to adjust to a proper angle. During the adjustment process, the rotating seat 5 rotates relative to the mounting seat 21, so that the limiting protrusion slides in the arc-shaped guide groove 64, so that the limiting protrusion slides to the toothed groove 61 at the corresponding position, thereby completing the angle adjustment of the backrest rod 4. When the seat needs to be changed, it is necessary to press the unlocking pressing block 33 to disengage the clamping column 32 from the clamping socket 31. At this time, the seat frame 2 is unlocked and can be removed from the rotating connecting seat 1 for changing direction. After the reversal is completed, under the pressure of the top pressure spring, the clamping column 32 elastically clamps on the clamping socket 31 on the rear side of the clamping block 13 (when the seat frame 2 has not changed direction, the seat frame 2 faces forward, and the clamping column 21 is clamped on the clamping socket 31 on the front side of the clamping block 13), thereby re-locking the seat frame 2.

[0033] When the baby carriage frame needs to be folded, the operation is basically the same regardless of whether the seat is reversed. First, the unlocking block 71 is moved to allow the pull rope to pull the movable block 62 and allow the limiting protrusion to disengage from the toothed groove 62. At this time, the backrest rod 4 can be rotated to fold it. During the folding of the backrest rod 4, the rotating seat 5 rotates relative to the mounting seat 21, allowing the limiting protrusion to slide in the arc-shaped guide groove 64, and at the same time allowing the pin connecting piece 112 to slide in the arc-shaped recess 51 of the rotating seat 5. When the pin connecting piece 112 slides along the arc-shaped recess 51 to the guiding inclined surface 52 at the end, the rotating seat 5 pushes out the pin connecting piece 112 together with the pin 111 to disengage the pin 111 from the clamping hole 101 and unlock the rotating connecting seat 1, so that the rotating connecting seat 1 and the seat frame 2 can be rotated and folded relative to the baby carriage frame as a whole (when the seat is not reversed, such as Figure 8 As shown, when folded, the connecting seat 1 and the seat frame 2 are folded together toward the front foot rod 20 of the baby carriage frame; when the seat is reversed, as shown in FIG. Fig.10 As shown in the figure, when folded, the connecting seat 1 and the seat frame 2 are integrally folded toward the rear foot rod 30 of the baby stroller frame), and finally the push rod 40, the rear foot rod 30 and the front foot rod 20 of the baby stroller frame are folded together to complete the folding of the baby stroller (as shown in the figure). Fig. 9 or Fig.11Therefore, the seat can be folded together with the baby carriage frame without disassembly before and after the seat is turned, which is very convenient. The seat can also be stored together with the baby carriage frame after folding, saving storage space. When the baby carriage is used next time, the push rod 40, the rear foot rod 30, the front foot rod 20, the seat frame 2 and the backrest rod 4 of the baby carriage frame can be directly unfolded for reuse without the need to install the seat again, which is very convenient.

Claims

1. A reversible baby carriage seat frame structure, characterized in that The invention comprises two rotating connection seats (1) rotatably arranged on the inner sides of two baby carriage joints (10) and a seat frame (2) detachably connected to the two rotating connection seats (1); the rotating connection seat (1) is provided with a latch pin (11) which can be inserted into a latch hole (101) on the inner side of the baby carriage joint (10) to lock the rotating connection seat (1); two sides of the seat frame (2) are provided with mounting seats (21) detachably connected to the rotating connection seat (1) so that the seat frame (2) can be removed from the rotating connection seat (1) and reversed; a seat locking assembly (3) for locking the mounting seat (21) is provided between the mounting seat (21) and the rotating connection seat (1); a backrest rod (4) is provided between the two mounting seats (21); the backrest rod (4) A rotating seat (5) is provided between the end of the backrest rod (4) and the mounting seat (21) so as to enable the backrest rod (4) to rotate relative to the mounting seat (21); a backrest locking assembly (6) is provided between the rotating seat (5) and the mounting seat (21) so as to lock the rotating seat (5); a backrest unlocking assembly (7) is provided on the backrest rod (4) so ​​as to unlock the backrest locking assembly (6); an arc-shaped recess (51) is provided on the rotating seat (5) along its rotation direction for avoiding the bayonet (11) so that the bayonet (11) can slide in the arc-shaped recess (51) when the rotating seat (5) rotates; and a guiding inclined surface (52) is provided at the end of the arc-shaped recess (51) so as to enable the bayonet (11) to be pushed out so as to unlock the rotating connecting seat (1).

2. A reversible baby carriage seat frame structure according to claim 1, characterized in that A protrusion (12) is provided at the lower end of the rotating connection seat (1), and the locking pin (11) comprises a pin shaft (111) which can be telescopically movable in the protrusion (12) to penetrate the rotating connection seat (1) and be locked in the locking hole (101), and a pin shaft connecting piece (112) provided at the end of the pin shaft (111), and the pin shaft connecting piece (112) can slide relative to the arc-shaped recess (51) when the rotating seat (5) rotates, and when sliding to the guide inclined surface (52), the pin shaft (111) is pushed out to be separated from the locking hole (101).

3. A reversible baby carriage seat frame structure according to claim 1 or 2, characterized in that The mounting seat (21) is provided with a clamping sleeve (211), and correspondingly, the rotating connection seat (1) is provided with a clamping block (13) which is clamped and connected to the clamping sleeve (211).

4. A reversible baby carriage seat frame structure according to claim 3, characterized in that The seat locking assembly (3) comprises a bayonet (31) provided on both sides of the front and rear of the bayonet block (13), a bayonet column (32) provided in the mounting seat (21) and elastically retractable relative to the clamping sleeve (211) to be snap-connected with the bayonet (31), and an unlocking pressing block (33) protruding from the mounting seat (21) and used to disengage the bayonet column (32) from the bayonet (31).

5. A reversible baby carriage seat frame structure according to claim 1 or 2, characterized in that The backrest locking assembly (6) comprises a toothed groove (61) provided on the inner side of the mounting seat (21) and a movable block (62) movably provided between the mounting seat (21) and the rotating seat (5); upper and lower ends of the movable block (62) are provided with limiting bosses respectively connected to the toothed grooves (61) on the upper and lower sides of the mounting seat (21); the backrest locking assembly (6) further comprises an elastic pressing member provided in the backrest rod (4) and used for pressing the movable block (62) so that the limiting boss is inserted into the toothed groove (61).

6. A reversible baby carriage seat frame structure according to claim 5, characterized in that An arc-shaped guide groove (64) communicating with the tooth-shaped groove (61) is provided on the inner side of the mounting seat (21) for the limiting boss to slide therein so as to adjust the position of the limiting boss relative to the tooth-shaped groove (61).

7. A reversible baby carriage seat frame structure according to claim 5, characterized in that The backrest unlocking assembly (7) comprises an unlocking block (71) arranged on the backrest rod (4) and a pull rope arranged in the backrest rod (4) and used for pulling the movable block (62) so that the limiting protrusion is separated from the toothed groove (61), and the two ends of the pull rope are respectively connected to the unlocking block (71) and the movable block (62).

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