Folding baby stroller

Abstract

The utility model discloses a folding baby stroller, and belongs to the technical field of baby products. The rotating joint comprises a push rod connecting piece, a push rod locking plate, a front foot locking plate and a rear foot connecting piece which are hinged in sequence from inside to outside; the two push rod locking plates, the two front foot locking plates and the two rear foot connecting pieces are located on the two sides of the push rod connecting pieces respectively. The push rod connecting piece and the push rod locking plate are connected with the push rod; the front foot locking plates are connected with the front foot supporting rods; and the rear leg connecting pieces are respectively connected with the other ends of the rear leg supporting rods. The lock is simple and novel in structure, low in cost and convenient to operate, and can be unlocked only through the action of the push rod.

Description

Technical Field

[0001] The utility model belongs to the technical field of baby products and discloses a foldable baby stroller which is particularly suitable for traveling with babies. Background Art

[0002] As a necessary tool for infants and young children to travel, baby strollers have been used by a large number of users. At present, in addition to the basic requirements of stability and safety of baby strollers, users are increasingly paying attention to the small size, lightness, foldability and other characteristics of baby strollers.

[0003] The baby stroller in the prior art includes a frame with an unfolded position and a folded position, a front wheel assembly arranged at the front bottom of the frame, a rear wheel assembly arranged at the rear bottom of the frame, a locking mechanism for locking the frame in the unfolded position, and a seat mechanism arranged on the frame for a person to sit on. There are many types of frames of existing baby strollers, and the number of rods of the frames is different, and the connection relationship and connection position between the rods are different, so the folding principle and folding method are different. Utility Model Content

[0004] The utility model provides a foldable baby stroller, which has a simple and novel structure, low cost and convenient operation, and can be unlocked only by the action of a push rod.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A foldable baby stroller comprises a front foot assembly and a rear foot assembly; further comprising a push rod and a rotating joint;

[0007] The front foot assembly includes a front foot support rod and a front caster, and the front caster is located at the end of the front foot support rod; the rear foot assembly includes a rear foot support rod I and a rear foot support rod II, and the ends of the rear foot support rod I and the rear foot support rod II are both provided with rear casters;

[0008] The rotating joint comprises a push rod connecting piece, a push rod locking plate, a front foot locking plate and a rear foot connecting piece which are hinged from the inside to the outside in sequence; wherein the push rod locking plate, the front foot locking plate and the rear foot connecting piece are each provided with two, and are respectively located on both sides of the push rod connecting piece; the push rod connecting piece and the push rod locking plate are both connected to the push rod; the front foot locking plate is both connected to the front foot support rod; the rear foot connecting piece is respectively connected to the other end of the rear foot support rod;

[0009] The main body of the rear foot connecting member is a disc-shaped structure, and a collar and a pin are provided at the inner center thereof; the collar and the pin are coincident in center, and there is a distance between them; a protrusion I extending toward the collar is provided on the side wall of the pin;

[0010] The main bodies of the front foot locking plate, the push rod locking plate and the push rod connecting piece are all annular structures, and each annular structure is provided with three arc-shaped through holes in a circumferential array, and the center of the arc-shaped through holes coincides with the center of the central circular hole; the inner wall of the central circular hole of the push rod connecting piece is provided with a protrusion II extending toward the center; the push rod connecting piece is also provided with three arc-shaped through holes in a circumferential array, and the center of the arc-shaped through holes coincides with the center of the central circular hole; the collar is located in the central circular hole, and the two are matched with bearings;

[0011] The diameters of the three arc-shaped through holes in the circular array are all the same; the arc-shaped through holes of the push rod locking plate and the push rod connecting piece correspond to each other one by one and completely overlap; in the expanded state, there is an angle greater than zero between the arc-shaped through holes of the push rod locking plate and the front foot locking plate, and at each expanded angle position there is a limiting axis that passes through the front foot locking plate, the push rod locking plate and the push rod connecting piece.

[0012] Furthermore, the outer edge of the protrusion and the outer edge of the ring are located on the same circumferential surface.

[0013] Furthermore, the thickness of the central circular hole is greater than the thickness of the bump II.

[0014] Furthermore, a locking structure is provided on the push rod connecting member; the locking structure comprises a locking groove, a locking member and an actuating member; the locking groove is located on one side of the push rod connecting member, the locking member is located in the locking groove, a spring I is provided between the locking member and the locking groove, and the locking member is subjected to a continuous outward thrust in the locking groove; one end of the actuating member passes through the side wall of the locking groove, and the inner end thereof abuts against the inclined surface on the outer side of the locking member;

[0015] The front foot locking plate and the push rod locking plate are both provided with locking holes, and locking columns are provided on the outer side of the locking piece; the locking columns and the locking holes correspond one to one.

[0016] Furthermore, the push rod is a telescopic rod structure, including an upper rod and a lower tube that are mounted together, and the upper rod can move freely along the lower tube; one end of the actuating member that passes through the side wall of the locking groove extends into the lower tube of the push rod; the actuating member can move along the central axis of the lower tube; in the stowed state, the bottom of the upper rod is pressed against the end of the actuating member.

[0017] Furthermore, it also includes a vehicle seat and a vehicle seat receiving part; the vehicle seat is located on the top of the vehicle seat receiving part; the vehicle seat receiving part is fixedly connected to the front foot; a movement slide groove is provided at the rear of the vehicle seat receiving part, and the lock buckle is located in the movement slide groove and can slide freely along the movement slide groove; the upper part of the lock buckle is a locking tongue part, and the lower part is a sensing part, and the locking tongue part and the sensing part are an integrated structure; the base of the vehicle seat is provided with a locking port corresponding to the locking tongue part;

[0018] A groove is arranged on the outer arc edge of the push rod connecting piece. In the unfolded state, the lock tongue is located in the lock opening; and the sensing part is located in the groove.

[0019] Furthermore, a turntable is provided at the bottom of the seat; the lock is located at the bottom of the turntable, and the bottom of the seat is connected to the bearing at the top of the turntable.

[0020] Furthermore, the front of the seat receiving member is hinged to the seat via a hinge shaft, and the two can rotate around the hinge shaft.

[0021] Furthermore, a spring II is provided in the movement slide groove, and the lock is subjected to a continuous outward thrust.

[0022] Compared with the background technology, the utility model has the following advantages:

[0023] The utility model realizes the folding and unfolding of the push rod and the rear foot by the cooperation of the push rod connecting piece and the rear foot connecting piece; realizes the folding and unfolding of the push rod and the front foot by the cooperation of the push rod locking plate and the front foot locking plate; realizes the folding of the vehicle seat and the push rod by the cooperation of the groove on the outer edge arc of the push rod connecting piece and the lock buckle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the expanded structure of the utility model in its overall state.

[0025] Figure 2 It is a structural schematic diagram of the rear foot connecting piece in the utility model.

[0026] Figure 3 It is a schematic structural diagram of the front foot locking plate of the utility model.

[0027] Figure 4 It is a structural schematic diagram of the push rod connecting piece in the utility model.

[0028] Figure 5 It is a structural schematic diagram of the vehicle seat receiving member in the utility model.

[0029] Figure 6 It is a schematic diagram of the matching relationship between the lock buckle and the push rod connecting piece in the utility model.

[0030] Figure 7 It is a structural schematic diagram of the push rod locking plate in the utility model.

[0031] Description of the markings in the figure:

[0032] 1. Push rod, 2. Push rod connecting piece, 3. Rear foot connecting piece, 4. Rear foot support rod, 5. Rear caster, 6. Front caster, 7. Front foot support rod, 8. Seat, 10. Lock buckle, 3-1. Bump I, 3-2. Pin, 3-3. Ring, 11. Front foot locking plate, 12. Lock hole II, 13. Arc through hole II, 9, 14. Seat receiving piece, 2-1. Arc through hole, 2-2. Center circular hole, 2-3. Bump II, 2-4. Lock column, 2-5. Action piece, 2-6. Locking piece, 2-7. Inclined surface, 2-8. Groove, 10-1. Lock tongue part, 10-2. Sensing part, 15. Lock hole I, 16. Arc through hole I, 17. Push rod locking plate. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-7 The specific implementation methods of the utility model are further described in detail with examples.

[0034] Reference Figure 1 , is a schematic diagram of the expanded structure of this embodiment. In this state:

[0035] The front foot assembly includes a front foot support rod and a front caster, and the front caster is located at the end of the front foot support rod; the rear foot assembly includes a rear foot support rod I and a rear foot support rod II, and the ends of the rear foot support rod I and the rear foot support rod II are both provided with rear casters;

[0036] The front foot support rod, the rear foot support rod and the push rod are all hinged on the rotating joint, and the seat is connected to the front foot support rod through the seat receiving member. In this embodiment, a storage basket is provided below the seat and a sunshade is provided above the seat; the folding of the seat in this embodiment is not the focus of this patent, so it will not be described in detail.

[0037] Reference Figures 2 to 4 as well as Figure 6 and Figure 7 The rotary joint structure disclosed in this embodiment includes a push rod connecting member, a push rod locking plate, a front foot locking plate and a rear foot connecting member, which are centrally hinged from the inside to the outside in sequence; wherein the push rod locking plate, the front foot locking plate and the rear foot connecting member are each provided with two, and are respectively located on both sides of the push rod connecting member; the push rod connecting member and the push rod locking plate are both connected to the push rod; the front foot locking plate is both connected to the front foot support rod; the rear foot connecting members are respectively connected to the other end of the rear foot support rod;

[0038] The main body of the rear foot connecting member is a disc-shaped structure, and a collar and a pin are provided at the inner center thereof; the collar and the pin are coincident in center, and there is a distance between them; a protrusion I extending toward the collar is provided on the side wall of the pin;

[0039] The main bodies of the front foot locking plate, the push rod locking plate and the push rod connecting member are all annular structures, and each annular structure is provided with three arc-shaped through holes in a circumferential array, and the center of the arc-shaped through holes coincides with the center of the central circular hole; the inner wall of the central circular hole of the push rod connecting member is provided with a protrusion II extending toward the center; the push rod connecting member is also provided with three arc-shaped through holes in a circumferential array, and the center of the arc-shaped through holes coincides with the center of the central circular hole;

[0040] The diameters of the three arc-shaped through holes in the circular array are all the same; the arc-shaped through holes of the push rod locking plate and the push rod connecting piece correspond to each other one by one and completely overlap; in the expanded state, there is an angle greater than zero between the arc-shaped through holes of the push rod locking plate and the front foot locking plate, and at each expanded angle position there is a limiting axis that passes through the front foot locking plate, the push rod locking plate and the push rod connecting piece.

[0041] In this embodiment, the collars of the two rear foot connecting members are both located in the central circular hole, and the two are in bearing fit. The outer edge of the protrusion and the outer edge of the collar are located on the same circumferential surface. The thickness of the central circular hole is the sum of the thickness of the protrusion II and the thickness of the two collars.

[0042] Reference Figure 1 and Figure 4 The push rod is a telescopic rod structure, including a set of upper rod and lower tube, the upper rod can move freely along the lower tube; one end of the action piece passing through the side wall of the locking groove extends into the lower tube of the push rod; the action piece can move along the central axis of the lower tube; in the stored state, the bottom of the upper rod is pressed on the end of the action piece.

[0043] Specific reference Figure 4 , a locking structure is also provided on the push rod connecting member; the locking structure includes a locking groove, a locking member and an actuating member; the locking groove is located on one side of the push rod connecting member, the locking member is located in the locking groove, a spring I is provided between the locking member and the locking groove, and the locking member is subjected to a continuous outward thrust in the locking groove; one end of the actuating member passes through the side wall of the locking groove, and the inner end thereof abuts against the inclined surface on the outer side of the locking member;

[0044] The front foot locking plate and the push rod locking plate are both provided with locking holes, and locking columns are provided on the outer sides of the locking parts; the locking columns correspond to the locking holes one by one.

[0045] Reference Figure 5 The vehicle seat is located at the top of the vehicle seat receiving part; the vehicle seat receiving part is fixedly connected to the front foot; a movement slide groove is provided at the rear of the vehicle seat receiving part, and the lock buckle is located in the movement slide groove and can slide freely along the movement slide groove; the upper part of the lock buckle is a lock tongue part, and the lower part is a sensing part, and the lock tongue part and the sensing part are an integrated structure; the base of the vehicle seat is provided with a lock port corresponding to the lock tongue part; a spring II is provided in the movement slide groove, and the lock buckle is subjected to a continuous outward thrust.

[0046] A groove is arranged on the outer arc edge of the push rod connecting piece, and in the unfolded state, the lock tongue is located in the lock mouth; the sensing part is located in the groove. The front of the seat receiving piece is hinged with the turntable piece through a hinge shaft, and the two can rotate around the hinge shaft.

[0047] In this embodiment: a turntable is provided at the bottom of the vehicle seat; the locking port is located at the bottom of the turntable, and the bottom of the vehicle seat is connected to a bearing at the top of the turntable.

[0048] The principle of this embodiment is further described and elaborated below in conjunction with the unfolding and folding process:

[0049] In the expanded state (see Figure 1 ): The push rod, the rear foot support rod and the front foot support rod are at a certain angle; the upper rod and the lower tube of the push rod are at the maximum length; the locking member in the locking groove is subjected to the elastic force of the spring I, so that the lock column passes through the lock holes of the push rod locking plate and the front foot locking plate, and the arcs of the push rod locking plate and the front foot locking plate maintain the minimum angle; the protrusions I on the two rear foot connecting members are against the same side of the protrusions II. The end of the sensing part of the lock buckle is located in the groove, and the lock tongue is located in the lock opening of the turntable member.

[0050] When folding is required, the upper rod of the push rod is pressed into the lower tube, so that the upper rod applies pressure to the action piece in the lower tube; the action piece moves downward under the pressure, and the locking piece moves inward due to the cooperation of the inclined surfaces of the two, and applies pressure to the spring I to store potential energy; under this condition, the lock column retracts from the lock hole, so that the push rod locking plate and the front foot condensation plate are unlocked, and the arc-shaped through hole and the limit shaft are hinged, and at this time, the push rod, the front foot support rod, and the rear foot support rod can be rotated relative to each other by human power, so as to achieve folding;

[0051] During the folding process, the front foot support rod and the seat receiving part rotate along the outer edge of the push rod connecting part; the lock buckle disengages from the groove and retracts along the moving slide groove, so that the lock tongue disengages from the lock mouth. At this time, the seat is rotated along the hinge axis and folded; finally, the entire folding process is completed.

Claims

1. A foldable baby stroller, comprising a front foot assembly and a rear foot assembly; characterized in that: Also includes push rods and revolute joints; The front foot assembly includes a front foot support rod and a front caster, and the front caster is located at the end of the front foot support rod; the rear foot assembly includes a rear foot support rod I and a rear foot support rod II, and the ends of the rear foot support rod I and the rear foot support rod II are both provided with rear casters; The rotating joint comprises a push rod connecting piece, a push rod locking plate, a front foot locking plate and a rear foot connecting piece which are centrally hinged from the inside to the outside in sequence; wherein the push rod locking plate, the front foot locking plate and the rear foot connecting piece are each provided with two, and are respectively located on both sides of the push rod connecting piece; the push rod connecting piece and the push rod locking plate are both connected to the push rod; the front foot locking plates are both connected to the front foot support rod; the rear foot connecting pieces are respectively connected to the other end of the rear foot support rod; The main body of the rear foot connecting member is a disc-shaped structure, and a collar and a pin are provided at the inner center thereof; the collar and the pin are coincident in center, and there is a distance between them; a protrusion I extending toward the collar is provided on the side wall of the pin; The main bodies of the front foot locking plate, the push rod locking plate and the push rod connecting piece are all annular structures, and each annular structure is provided with three arc-shaped through holes in a circumferential array, and the center of the arc-shaped through holes coincides with the center of the central circular hole; the inner wall of the central circular hole of the push rod connecting piece is provided with a protrusion II extending toward the center; the push rod connecting piece is also provided with three arc-shaped through holes in a circumferential array, and the center of the arc-shaped through holes coincides with the center of the central circular hole; the collar is located in the central circular hole, and the two are matched with bearings; The diameters of the three arc-shaped through holes in the circular array are all the same; the arc-shaped through holes of the push rod locking plate and the push rod connecting piece correspond to each other one by one and completely overlap; in the expanded state, there is an angle greater than zero between the arc-shaped through holes of the push rod locking plate and the front foot locking plate, and at each expanded angle position there is a limiting axis that passes through the front foot locking plate, the push rod locking plate and the push rod connecting piece.

2. A foldable baby stroller according to claim 1, characterized in that: The outer edge of the protrusion and the outer edge of the collar are located on the same circumferential surface.

3. A foldable baby stroller according to claim 1, characterized in that: The thickness of the central circular hole is greater than the thickness of the bump II.

4. A foldable baby stroller according to claim 1, characterized in that: The push rod connecting member is also provided with a locking structure; the locking structure comprises a locking groove, a locking member and an actuating member; the locking groove is located on one side of the push rod connecting member, the locking member is located in the locking groove, a spring I is provided between the locking member and the locking groove, and the locking member is subjected to a continuous outward thrust in the locking groove; one end of the actuating member passes through the side wall of the locking groove, and the inner end thereof abuts against the inclined surface on the outer side of the locking member; The front foot locking plate and the push rod locking plate are both provided with locking holes, and locking columns are provided on the outer side of the locking piece; the locking columns and the locking holes correspond one to one.

5. A foldable baby stroller according to claim 4, characterized in that: The push rod is a telescopic rod structure, including an upper rod and a lower tube that are set together, and the upper rod can move freely along the lower tube; one end of the action piece that penetrates the side wall of the locking groove extends into the lower tube of the push rod; The action piece can move along the central axis of the lower tube; in the storage state, the bottom of the upper rod is pressed on the end of the action piece.

6. A foldable baby stroller according to claim 1, characterized in that: It also includes a vehicle seat and a vehicle seat receiving part; the vehicle seat is located on the top of the vehicle seat receiving part; the vehicle seat receiving part is fixedly connected to the front foot; a movement slide groove is arranged at the rear of the vehicle seat receiving part, and the lock buckle is arranged in the movement slide groove and can slide freely along the movement slide groove; the upper part of the lock buckle is a locking tongue part, and the lower part is a sensing part, and the locking tongue part and the sensing part are an integrated structure; the base of the vehicle seat is provided with a locking port corresponding to the locking tongue part; A groove is arranged on the outer arc edge of the push rod connecting piece. In the unfolded state, the lock tongue is located in the lock opening; and the sensing part is located in the groove.

7. A foldable baby stroller according to claim 6, characterized in that: A turntable is provided at the bottom of the vehicle seat; the lock is located at the bottom of the turntable, and the bottom of the vehicle seat is connected to a bearing at the top of the turntable.

8. The foldable baby stroller according to claim 6, characterized in that: The front of the vehicle seat receiving component is hinged to the vehicle seat through a hinge shaft, and the two can rotate around the hinge shaft.

9. The foldable baby stroller according to claim 6, characterized in that: A spring II is arranged in the movement slide groove, and the lock buckle is subjected to a continuous outward thrust.

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