Folding and standing linkage baby carriage frame

Abstract

The utility model discloses a folding standing linkage baby carriage frame, which comprises a front foot tube group, a rear foot tube group, a handle tube group, a main joint, a seat frame and an auxiliary locking device, the front foot tube group, the rear foot tube group and the handle tube group are pivotally connected through the main joint, the main joint is provided with a main locking device, and when the frame is unfolded, the seat frame is locked by the main locking device. The main locking device can lock rotation of the front foot pipe set, the rear foot pipe set and the handle pipe, the seat frame is arranged between the front foot pipe set and the rear foot pipe set, the front end of the seat frame is installed on the front foot pipe set in a pivoted mode, the rear foot pipe is provided with a connecting plate, and the rear end of the connecting plate is connected with the rear foot pipe in a pivoted mode. The front end of the connecting plate is connected with the rear end of the front foot pipe in a pivoted mode, and the rear foot pipe set is provided with a transverse pipe. The main joint unlocks the locking devices among the front foot pipe set, the rear foot pipe set and the handle pipe set, so that the front foot pipe set, the rear foot pipe set and the handle pipe set can rotate mutually, but the front foot pipe set, the rear foot pipe set and the seat frame are restrained mutually to form a stable triangle.

Description

Technical Field

[0001] The utility model relates to the field of baby carriage products, in particular to a folding and standing linkage baby carriage frame. Background Art

[0002] Baby strollers are mainly used for children to sit and move around, so as to facilitate care. The baby stroller frame has two main states, namely, a folded state and an unfolded state. However, in order to facilitate folding, the existing frame is generally provided with an automatic folding structure to achieve automatic standing (driving the wheels to bring the front leg tube group and the rear leg tube group closer together). However, during the existing automatic folding process, the frame often has the problem of unstable standing and tipping due to the influence of the driving force, which in turn causes the fabric part of the baby stroller to adhere to ground stains, affecting the cleanliness.

[0003] The automatic folding structure can refer to Chinese patent CN201810647800.0. Utility Model Content

[0004] The main purpose of the utility model is to provide a folding and standing linkage baby carriage frame, aiming to improve the automatic folding structure of the frame, which is convenient for folding the baby carriage and can avoid the problem of the frame tipping over.

[0005] To achieve the above-mentioned purpose, the utility model provides a folding and standing linkage baby carriage frame, comprising:

[0006] Front leg tube set;

[0007] Rear leg tube set;

[0008] Handle tube assembly; (consisting of two spaced front tubes, rear tubes and handle tubes, this structure is prior art and will not be described in detail here),

[0009] A main joint, the front leg tube group, the rear leg tube group and the handlebar tube group are pivotally connected through the main joint, and the main joint is provided with a main locking device, and when the frame is unfolded, the main locking device can lock the rotation of the front leg tube group, the rear leg tube group and the handlebar tube;

[0010] A seat frame, the seat frame is arranged between the front leg tube group and the rear leg tube group, the front end of the seat frame is pivotally mounted on the front leg tube group, and the rear leg tube is provided with a connecting plate,

[0011] The rear end of the connecting plate is pivotally connected to the rear leg tube, and the front end of the connecting plate is pivotally connected to the rear end of the front leg tube;

[0012] A secondary locking device, the rear leg tube group is provided with a transverse tube, the secondary locking device is arranged on the transverse tube, and the secondary locking device is used to lock the rotation of the seat tube.

[0013] When the bicycle frame needs to be folded, the main locking device is unlocked, and then the handlebar tube group is folded forward of the front leg tube group. At this time, the front leg tube group and the rear leg tube group are locked by the seat frame and the auxiliary locking device, so that the front leg tube group and the rear leg tube group are in an unfolded standing state. At this time, the auxiliary locking device is unlocked, and the rear end of the seat tube is directly pulled up, so that the front leg tube and the rear leg tube can be driven to fold towards each other, which not only avoids the tipping of the bicycle frame, but also makes it convenient to fold, that is, the rear end of the seat frame can be pulled up to achieve the lifting and folding.

[0014] That is, the main joint unlocks the locking devices between the front leg tube assembly, the rear leg tube assembly and the handlebar tube assembly, so the three can rotate relative to each other, but the front leg tube assembly, the rear leg tube assembly and the seat frame are constrained to each other to form a stable triangle.

[0015] When locked, the seat frame unfolds and provides support. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an exploded view of the utility model;

[0017] Figure 2 It is a three-dimensional schematic diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the utility model in a folded state;

[0019] Figure 4 This is a schematic diagram of the seat frame and the connecting plate;

[0020] Figure 5 Schematic diagram after hiding the wheels for the frame.

[0021] In the figure, 11 is the front leg tube group, 12 is the rear leg tube group, 13 is the handlebar tube group, 131 is the handlebar upper tube, 132 is the handlebar lower tube, 133 is the secondary joint, 2 is the main joint, 3 is the seat frame, 31 is the connecting plate, 4 is the secondary locking device, 41 is the bayonet pin, 42 is the slot, 5 is the cross tube, and 51 is the positioning plate. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0025] like Figures 1 to 5 As shown, a folding and standing linkage baby carriage frame comprises:

[0026] Front leg pipe group 11;

[0027] Rear leg tube set 12;

[0028] Handlebar tube set 13;

[0029] The device is composed of two spaced front foot tubes, a rear foot tube and a handle tube. This structure is a prior art and will not be described in detail here.

[0030] A main joint 2, wherein the front leg tube set 11, the rear leg tube set 12 and the handlebar tube set 13 are pivotally connected via the main joint 2, and the main joint 2 is provided with a main locking device, and when the frame is unfolded, the main locking device can lock the rotation of the front leg tube set 11, the rear leg tube set 12 and the handlebar tube;

[0031] The seat frame 3 is arranged between the front leg tube group 11 and the rear leg tube group 12. The front end of the seat frame 3 is pivotally mounted on the front leg tube group 11. The rear leg tube is provided with a connecting plate 31.

[0032] The rear end of the connecting plate 31 is pivotally connected to the rear leg tube, and the front end of the connecting plate 31 is pivotally connected to the rear end of the front leg tube;

[0033] Auxiliary locking device 4, the rear leg tube group 12 is provided with a transverse tube 5, the auxiliary locking device 4 is arranged on the transverse tube 5, and the auxiliary locking device 4 is used to lock the rotation of the seat tube.

[0034] When the bicycle frame needs to be folded, the main locking device is unlocked, and then the handlebar tube group 13 is folded toward the front of the front leg tube group 11. At this time, the front leg tube group 11 and the rear leg tube group 12 are locked by the seat frame 3 and the auxiliary locking device 4, so that the front leg tube group 11 and the rear leg tube group 12 are in an unfolded standing state. At this time, the auxiliary locking device 4 is unlocked, and the rear end of the seat tube is directly pulled up, so that the front leg tube and the rear leg tube can be driven to fold toward each other, which not only avoids the tipping of the bicycle frame, but also makes it convenient to fold, that is, the rear end of the seat frame 3 can be pulled up to achieve its lifting and folding.

[0035] That is, the main joint 2 unlocks the locking devices between the front leg tube set 11, the rear leg tube set 12 and the handlebar tube set 13, so the three can rotate relative to each other, but the front leg tube set 11, the rear leg tube set 12 and the seat frame 3 are constrained to each other to form a stable triangle.

[0036] When in the locked state, the seat frame 3 will be unfolded and form a support.

[0037] Specifically, the handlebar tube group 13 includes a handlebar upper tube 131 and a handlebar lower tube 132 connected by a secondary joint 133. When folded, the handlebar upper tube 131 is folded forward, thereby moving the center of gravity of the frame forward, effectively ensuring that the front leg tube group 11 moves closer to the rear leg tube group 12.

[0038] In the embodiment of the utility model, a folding rope is provided at the top of the handlebar upper tube 131, and the folding rope can unlock the secondary joint 133 and the main joint 2, thereby realizing linkage folding, wherein the setting of the folding rope can refer to the prior art, and will not be described in detail here.

[0039] Specifically, the secondary locking device 4 includes a latch pin 41 disposed at the rear end of the seat frame 3 and a latch slot 42 disposed at the cross tube 5 , and the latch pin 41 can be hooked in the latch slot 42 .

[0040] In the embodiment of the utility model, the transverse tube 5 is provided with a positioning plate 51 extending upward, and the clamping groove 42 is provided on the positioning plate 51 .

[0041] Specifically, the transverse tube 5 is disposed on the connecting plate 31 or fixedly disposed between the rear leg tube groups 12 .

[0042] In the embodiment of the utility model, the transverse tube 5 is pivotally mounted on the connecting plate 31 or the positioning plate 51 is pivotally mounted on the transverse tube 5 .

[0043] Specifically, the middle part of the transverse tube 5 is arranged to protrude outward in an arc shape, so that the distance between the card slot 42 and the card pin 41 is farther, so the card engagement is more stable and the unlocking is more convenient.

[0044] In the embodiment of the present utility model, the cross section of the connecting plate 31 is quasi-triangular.

[0045] The transverse tube 5 is arranged below the seat tube, and can ensure stable support of the seat frame 3 even without the secondary locking device 4 .

[0046] The secondary locking device 4 includes magnetic components or snap-fit ​​components respectively arranged on the transverse tube 5 and the seat tube, thereby realizing mutual locking of the seat frame 3 and the transverse tube 5 .

[0047] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A folding and standing baby carriage frame, characterized in that: include: Front leg tube set; Rear leg tube set; Handlebar tube set; A main joint, the front leg tube group, the rear leg tube group and the handlebar tube group are pivotally connected through the main joint, and the main joint is provided with a main locking device, and when the frame is unfolded, the main locking device can lock the rotation of the front leg tube group, the rear leg tube group and the handlebar tube; A seat frame, the seat frame is arranged between the front leg tube group and the rear leg tube group, the front end of the seat frame is pivotally mounted on the front leg tube group, and the rear leg tube is provided with a connecting plate, The rear end of the connecting plate is pivotally connected to the rear leg tube, and the front end of the connecting plate is pivotally connected to the rear end of the front leg tube; A secondary locking device, the rear leg tube group is provided with a transverse tube, the secondary locking device is arranged on the transverse tube, and the secondary locking device is used to lock the rotation of the seat tube.

2. The folding and standing linkage baby carriage frame according to claim 1, characterized in that: The handlebar tube assembly comprises an upper handlebar tube and a lower handlebar tube connected by a secondary joint. When folded, the upper handlebar tube is folded forward.

3. The folding and standing linkage baby carriage frame according to claim 2, characterized in that: A bicycle closure rope is arranged at the top end of the handlebar upper tube, and the bicycle closure rope can unlock the secondary joint and the main joint.

4. The folding and standing linkage baby carriage frame according to claim 2, characterized in that: The secondary locking device comprises a bayonet pin arranged at the rear end of the seat frame and a bayonet slot arranged at the transverse tube, and the bayonet pin can be hooked in the bayonet slot.

5. The folding and standing linkage baby carriage frame according to claim 4, characterized in that: The transverse tube is provided with a positioning plate extending upward, and the clamping groove is arranged on the positioning plate.

6. The folding and standing linkage baby carriage frame according to claim 5, characterized in that: The transverse tube is arranged on the connecting plate or fixedly arranged between the rear leg tube groups.

7. The folding and standing linkage baby carriage frame according to claim 6, characterized in that: The cross tube is pivotally mounted on the connecting plate or the positioning plate is pivotally mounted on the cross tube.

8. The folding and standing linkage baby carriage frame according to claim 1, characterized in that: The middle part of the transverse tube is arranged to protrude outward in an arc shape.

9. The folding and standing linkage baby carriage frame according to claim 1, characterized in that: The transverse tube is arranged below the seat tube.

10. The folding and standing linkage baby carriage frame according to claim 1, characterized in that: The secondary locking device comprises a magnetic member or a snap-fit ​​member respectively arranged on the transverse tube and the seat tube.

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