Framework structure of baby carriage

Abstract

The utility model discloses a framework structure of a baby carriage. The framework structure comprises a bottom frame mechanism, the handle mechanism comprises an upper handle assembly and a lower handle assembly, the lower end of the upper handle assembly is rotationally connected with the upper end of the lower handle assembly, and the upper handle assembly and the lower handle assembly are locked or unlocked through a first locking assembly; the supporting mechanism comprises a front foot assembly and a side supporting assembly, the upper end and the lower end of the front foot assembly are rotationally connected with the lower end of the handle lower assembly and the middle of the chassis mechanism in the front-back direction respectively, and the front foot assembly and the handle lower assembly are locked or unlocked through a second locking assembly; the rear end of the side supporting assembly is rotationally connected with the rear end of the bottom frame mechanism, and the middle of the side supporting assembly is rotationally connected with the lower half section of the handle lower assembly. According to the framework structure of the baby carriage, the whole structure is firm, the size is regular after the baby carriage is folded, and the baby carriage is convenient to store.

Description

TECHNICAL FIELD

[0001] The utility model relates to baby carriage technical field especially relates to a baby carriage's framework structure. BACKGROUND

[0002] With the development of baby carriage matures gradually, the consumer puts forward higher requirements to baby carriage, requires lightweight, small size etc. The market most baby carriage is heavy and inconvenient to carry. Although some car tables realize lightweight, but the overall structure is not firm, and the folding and unfolding car is complex and not easy to operate, and the size is irregular after folding, and the folded car is messy and inconvenient to store. SUMMARY

[0003] The utility model aims at solving one of the problems in the prior art to some extent, and therefore proposes a baby carriage framework structure, which is firm and has regular size after folding, and is convenient to store.

[0004] The baby carriage framework structure is achieved by the following technical scheme:

[0005] A baby carriage framework structure comprises a chassis mechanism, a handle mechanism comprising an upper handle assembly and a lower handle assembly, the lower end of the upper handle assembly being rotatably connected to the upper end of the lower handle assembly, and the upper handle assembly and the lower handle assembly being locked or unlocked by a first locking assembly, and a support mechanism comprising a front leg assembly and a side support assembly, the upper and lower ends of the front leg assembly being rotatably connected to the lower end of the lower handle assembly and the middle part of the chassis mechanism in the front-rear direction respectively, and the front leg assembly and the lower handle assembly being locked or unlocked by a second locking assembly, and the rear end of the side support assembly being rotatably connected to the rear end of the chassis mechanism, and the middle part of the side support assembly being rotatably connected to the lower half of the lower handle assembly.

[0006] In some embodiments, when the upper handle assembly and the lower handle assembly move relative to each other to a set angle, the second locking assembly can be linked to unlock or lock the front leg assembly and the lower handle assembly.

[0007] In some embodiments, the handle mechanism further comprises an unlocking assembly arranged on the upper handle assembly and linked to the first locking assembly.

[0008] In some embodiments, the chassis mechanism comprises a front wheel assembly, a rear wheel assembly and two connecting rods, the two connecting rods being connected between the front wheel assembly and the rear wheel assembly, and leaving a gap between the two connecting rods; the lower ends of the front leg assembly are rotatably connected to the middle parts of the two connecting rods in the front-rear direction.

[0009] In some embodiments, the two connecting rods and the rear wheel assembly together enclose a triangle with a small front end and a large rear end, or the front wheel assembly, the two connecting rods and the rear wheel assembly together enclose a trapezoid with a small front end and a large rear end.

[0010] In some embodiments, the upper handle assembly includes an upper handrail and two upper push rods, the upper ends of the two upper push rods being respectively connected to the left and right connecting segments of the upper handrail; the lower handle assembly includes two lower support rods, the upper ends of the two lower support rods being respectively pivotally connected to the lower ends of the two upper push rods, the lower support rods and the upper push rods being locked or unlocked by the first locking assembly; the front foot assembly includes two front support feet, the upper ends of the two front support feet being respectively pivotally connected to the lower ends of the two lower support rods, and the lower ends of the two front support feet being respectively pivotally connected to the left and right sides of the middle part of the chassis mechanism; the side support assembly includes two side support rods, the left and right sides of the rear end of the chassis mechanism being respectively pivotally connected to the middle parts of the two side support rods.

[0011] In some embodiments, when the stroller is in an unfolded state, the front support feet are arranged in a straight line or at an angle with the lower support rods; when the stroller is in a folded state, the connection between the front support feet and the lower support rods is arranged outside the left / right connecting rod of the chassis mechanism.

[0012] In some embodiments, the lower handle assembly further includes a handle connecting rod connected between the middle parts of the two side support rods; and / or the side support assembly further includes an upper connecting rod connected between the upper ends of the two side support rods and / or a lower connecting rod connected between the lower ends of the two side support rods.

[0013] In some embodiments, a canopy assembly is further included, the canopy assembly being pivotally connected to the upper end of the upper handle assembly, and the free end of the canopy assembly being movable between being unfolded in front of the upper handle assembly and being attached to the back of the upper handle assembly.

[0014] In some embodiments, a seat assembly is further included, the seat assembly being arranged in front of the handle mechanism, the upper end of the seat assembly being connected to the upper end of the upper handle assembly, the front side of the lower end of the seat assembly being connected to the upper end of the side support assembly, and the rear side of the lower end of the seat assembly being respectively connected to the lower end of the upper handle assembly and the middle part of the lower handle assembly.

[0015] Compared with the prior art, the present application has at least the following advantages:

[0016] 1. The framework structure of the utility model can switch between folding and unfolding state, because the chassis mechanism, the handle lower assembly, the front leg assembly and the side support assembly roughly constitute a triangle when unfolding, so that the whole vehicle structure is firm after unfolding, and the chassis mechanism, the handle lower assembly, the front leg assembly and the side support assembly form a four-bar linkage after folding, which is convenient to store.

[0017] 2. By setting the unlocking assembly on the handle upper assembly and linking with the first locking assembly, the handle upper assembly and the handle lower assembly can link the second locking assembly when moving to a set angle, so as to realize one-key operation, gravity folding and simple unfolding. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure diagram of the framework structure of the baby carriage in the utility model embodiment Figure 1 ;

[0019] Figure 2 It is the structure diagram of the framework structure of the baby carriage in the utility model embodiment Figure 2 ;

[0020] Figure 3 It is the right view of the baby carriage in the unfolded state in the utility model embodiment

[0021] Figure 4 It is the right view of the baby carriage after folding the top cover assembly in the utility model embodiment

[0022] Figure 5 It is the right view of the baby carriage folding handle mechanism in the utility model embodiment

[0023] Figure 6 It is the right view of the baby carriage folding handle mechanism in the utility model embodiment

[0024] Figure 7 It is the right view of the baby carriage in the folded state in the utility model embodiment

[0025] Figure 8 It is the standing view of the baby carriage after folding in the utility model embodiment

[0026] In the drawing: 11-front wheel assembly, 12-rear wheel assembly, 13-connecting rod; 21-handle upper assembly, 211-upper handrail, 212-upper push rod, 22-handle lower assembly, 221-lower support rod, 222-handle connecting rod, 23-unlocking assembly; 31-front leg assembly, 311-front support leg, 32-side support assembly, 321-side support rod, 322-upper connecting rod, 323-lower connecting rod; 41-top cover assembly, 42-seat assembly. DETAILED DESCRIPTION

[0027] The following embodiments are used to illustrate the present application, but the present application is not limited to these embodiments. Modifications to the specific embodiments of the present application or equivalent replacements to some technical features without departing from the spirit of the present application should be included in the technical solution range claimed by the present application.

[0028] Reference Figures 1-8 The present embodiment provides a framework structure of a baby carriage, which comprises a chassis mechanism, a handle mechanism and a supporting mechanism. The handle mechanism comprises an upper handle assembly 21 and a lower handle assembly 22. The lower end of the upper handle assembly 21 is rotatably connected to the upper end of the lower handle assembly 22. The upper handle assembly 21 and the lower handle assembly 22 are locked or unlocked by a first locking assembly (not shown in the figure). When the first locking assembly is unlocked, the upper handle assembly 21 can rotate relative to the lower handle assembly 22 under the action of gravity or external force, so that the handle mechanism can be folded or unfolded. When the first locking assembly is locked, the upper handle assembly 21 cannot rotate relative to the lower handle assembly 22. At this time, the handle mechanism can be stably and reliably maintained in an unfolded state, ensuring the stability and reliability of product use.

[0029] The supporting mechanism comprises a front leg assembly 31 and a side supporting assembly 32. The upper and lower ends of the front leg assembly 31 are rotatably connected to the lower end of the lower handle assembly 22 and the middle part of the chassis mechanism in the front-rear direction, respectively. The front leg assembly 31 and the lower handle assembly are locked or unlocked by a second locking assembly (not shown in the figure). When the second locking assembly is unlocked, the lower handle assembly 22 can rotate relative to the front leg assembly 31 under the action of gravity. When the second locking assembly is locked, the front leg assembly 31 cannot rotate relative to the lower handle assembly 22. At this time, the front leg assembly 31 can stably and reliably support the lower handle assembly 22. The rear end of the side supporting assembly 32 is rotatably connected to the rear end of the chassis mechanism. The middle part of the side supporting assembly 32 is rotatably connected to the lower half of the lower handle assembly 22. At this time, the side supporting assembly 32 and the lower handle assembly 22 are surrounded to form an "X" shape.

[0030] It can be seen that in the unfolded state, the chassis mechanism, the lower handle assembly 22, the front leg assembly 31 and the side supporting assembly 32 are roughly surrounded to form a triangle, so that the structure of the whole vehicle after unfolding is more firm. In the folded state, the handle mechanism and the front leg assembly 31 form a three-fold structure. When the front leg assembly 31 is folded, it can drive the side supporting assembly 32 to fold. The chassis mechanism, the lower handle assembly, the front leg assembly and the side supporting assembly form a four-bar linkage after folding the vehicle. The size is regular, the volume is small, and it is convenient to store.

[0031] Reference Figures 4-7In the present embodiment, the second locking assembly is linked when the upper handle assembly 21 and the lower handle assembly 22 move relative to each other to a set angle, so as to unlock or lock the front leg assembly 31 and the lower handle assembly. When the handle mechanism is folded, the second locking assembly is linked when the upper handle assembly 21 and the lower handle assembly 22 move relative to each other to a set angle, so as to unlock the front leg assembly 31 and the lower handle assembly 22. At this time, the front leg assembly 31 can be folded and collapsed relative to the chassis mechanism and the lower handle assembly 22, respectively, so that the front leg assembly 31 and the lower handle assembly can be folded and collapsed towards the chassis mechanism. When the lower handle assembly is folded and collapsed, the side support assembly 32 can be folded and collapsed towards the chassis mechanism. When folded and collapsed, the front leg assembly 31, the lower handle assembly 22, and the upper handle assembly 21 form a three-folded structure, so that the overall vehicle has a smaller size after being collapsed.

[0032] Further, the handle mechanism further comprises an unlocking assembly 23 arranged on the upper handle assembly 21 and linked with the first locking assembly. Thus, when the first locking assembly is unlocked by the unlocking assembly 23, the second locking assembly can be unlocked when the upper handle assembly 21 and the lower handle assembly 22 move relative to each other to a set angle, so that the front leg assembly 31 drives the lower handle assembly 22 to fold and collapse relative to the chassis mechanism, and the lower handle assembly can drive the side support assembly 32 to fold and collapse towards the chassis mechanism when the lower handle assembly is folded and collapsed, thereby realizing one-key operation and gravity folding and collapsing of the vehicle. Conversely, lifting the upper handle assembly 21 can realize unfolding. When unfolded to a position, the front leg assembly 31 will be locked with the lower handle assembly 22 by the second locking assembly, and the lower handle assembly 22 will be locked with the upper handle assembly 21 by the first locking assembly, thereby realizing simple unfolding of the vehicle.

[0033] Reference Figures 1-3 The chassis mechanism comprises a front wheel assembly 11, a rear wheel assembly 12, and two connecting rods 13 connected between the front wheel assembly 11 and the rear wheel assembly 12, and a gap (not shown in the figure) is left between the two connecting rods 13. The lower end of the front leg assembly 31 is rotatably connected to the middle of the front and rear directions of the two connecting rods 13, so as to facilitate reliable connection and support of the front leg assembly 31 by the two connecting rods 13. In the present embodiment, the front wheel assembly 11, the two connecting rods 13, and the rear wheel assembly 12 together form a trapezoid with a small front end and a large rear end, so as to make the chassis mechanism more stable and reliable, thereby improving the stability and reliability of the entire mechanism. In other embodiments, the two connecting rods 13 and the rear wheel assembly 12 can together form a triangle with a small front end and a large rear end.

[0034] Reference Figures 1-4 and Figures 7-8The upper handle assembly 21 comprises an upper handle 211 and two upper push rods 212, the upper ends of the two upper push rods 212 are connected with the left and right connecting segments of the upper handle 211 respectively, the lower ends of the two upper push rods are used for being rotatably connected with the lower handle assembly 22, of course, the lower ends of the two upper push rods are also used for being connected with the rear end of the seat assembly 42. In the embodiment, the upper handle 211 is in a "concave" shape structure which is open forwardly, the left and right connecting arms of the upper handle 211 are used for being connected with the left and right sides of the upper end of the seat assembly, and the left and right ends of the rear connecting arm of the upper handle 211 are used for being connected with the two upper push rods 212 respectively, and the upper handle 211 is provided with an unlocking assembly 23.

[0035] The lower handle assembly 22 comprises two lower support rods 221, the upper ends of the two lower support rods 221 are rotatably connected with the lower ends of the two upper push rods 212 of the upper handle assembly 21 respectively, and the upper ends of the two lower support rods are used for being connected with the rear end of the seat assembly 42, each lower support rod 221 is locked or unlocked with the corresponding upper push rod 212 through a first locking assembly, so that the lower support rod 221 can be folded or unfolded by rotating relative to the corresponding upper push rod. Further, the lower handle assembly 22 also comprises a handle connecting rod 222, the handle connecting rod 222 is connected between the middle portions of the two side support rods 321, so as to strengthen the overall strength of the lower handle assembly 22, prevent the relative movement of the two lower support rods 221, and facilitate to provide the stability after the whole vehicle is unfolded.

[0036] The front leg assembly 31 comprises two front support legs 311, the upper ends of the two front support legs 311 are pivotally connected with the lower ends of the two lower support rods 221 of the lower handle assembly 22 respectively, and the lower ends of the two front support legs 311 are pivotally connected with the left and right sides of the middle portion of the chassis mechanism respectively, in the embodiment, the lower ends of the two front support legs 311 are connected with the middle portions of the two connecting rods 13 of the chassis mechanism respectively, so that the front support legs 311 can rotate relative to the chassis mechanism and the lower handle assembly, and the front support legs 311, the lower support rods 221 and the upper push rods 212 jointly constitute a three-link mechanism.

[0037] The side support assembly 32 comprises two side support rods 321, which are respectively pivotally connected to the left and right sides of the rear end of the chassis mechanism. In the embodiment, the lower ends of the two side support rods 321 are respectively connected to the left and right ends of the rear wheel assembly 12 of the chassis mechanism, so that the force point falls on the rear wheel assembly of the chassis mechanism. The middle portions of the two side support rods 321 are respectively pivotally connected to the middle portions of the two lower support rods 221, so that the side support rod 321 and the corresponding lower support rod 221 are surrounded to form an "X" shape. Further, the side support assembly 32 further comprises an upper connecting rod 322 and / or a lower connecting rod 323. The upper connecting rod 322 is connected between the upper ends of the two side support rods 321, which is used to strengthen the overall strength of the upper end of the side support assembly, and is also used to be connected to the front side of the lower end of the seat assembly 42. The lower connecting rod 323 is connected between the lower ends of the two side support rods 321, which is used to strengthen the overall strength of the lower end of the side support assembly, and can prevent the two side support rods 321 from moving close to each other.

[0038] When the stroller is in the unfolded state, the front support foot 311 is arranged in a straight line with the lower support rod 221 and forms an edge, which, together with the lower end of the side support rod 321 and the rear end of the connecting rod 13, substantially surrounds a triangle (see Figures 1-5 The stability of the triangle makes the whole stroller more reliable. It is particularly pointed out that, of course, the front support foot 311 and the lower support rod 221 can also be designed to be arranged at an angle, so that the front support foot 311, the lower end of the lower support rod 221, the lower end of the side support rod 321 and the rear end of the connecting rod 13 are surrounded to form a quadrilateral.

[0039] When the stroller is in the folded and collapsed state, the connection between the front support foot 311 and the lower support rod 221 is arranged outside the left / right side of the connecting rod 13 of the chassis mechanism. In the embodiment, the support foot 311 and the connection between the support foot 311 and the lower support rod 221 are both turned to the left / right side outside the connecting rod 13 (see Figures 7-8 , which facilitates reducing the height of the whole stroller after folding and reducing the space occupied by the stroller. It is particularly pointed out that, of course, the support foot 311 and the connection between the support foot 311 and the lower support rod 221 can also be designed to be located between the two connecting rods 13.

[0040] Referring to Figures 1-8 , further comprising a canopy assembly 41, which is pivotally connected to the upper end of the handlebar upper assembly 21. In the embodiment, the canopy assembly 41 is connected to the upper handrail 211 of the handlebar upper assembly 21, and the free end of the canopy assembly 41 can move between being unfolded to the front of the handlebar upper assembly 21 and being attached to the back of the handlebar upper assembly 21, so that the canopy assembly 41 can be switched between the unfolded state and the folded and collapsed state, thereby facilitating reducing the space occupied by the canopy assembly 41 after folding the stroller.

[0041] Further, the seat assembly 42 is arranged in front of the handle mechanism, the upper end of the seat assembly 42 is connected with the upper end of the handle upper assembly 21, the front side of the lower end of the seat assembly 42 is connected with the upper end of the side support assembly 32, and the rear side of the lower end of the seat assembly 42 is respectively connected with the lower end of the handle upper assembly 21 and the middle part of the handle lower assembly 22. When the product is unfolded, the seat assembly 42 is pulled tight by the side support assembly 32, the handle upper assembly 21 and the handle lower assembly 22; on the contrary, when the product is folded, the seat assembly 42 is loosened and is folded together with the handle mechanism and the support mechanism.

[0042] The above merely describes some embodiments of the present application. For those skilled in the art, without departing from the inventive concept, some modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A frame structure of a stroller, characterized by, The utility model relates to a kind of foldable bicycle, including: Chassis mechanism; Handlebar mechanism, including handlebar upper assembly (21) and handlebar lower assembly (22), the lower end of the handlebar upper assembly (21) is rotatably connected with the upper end of the handlebar lower assembly (22), and the handlebar upper assembly (21) is locked or unlocked with the handlebar lower assembly (22) by first locking assembly; And Support mechanism, including front leg assembly (31) and side support assembly (32), the upper and lower ends of the front leg assembly (31) are rotatably connected with the lower end of the handlebar lower assembly (22) and the middle part of the chassis mechanism in front-rear direction respectively, and the front leg assembly (31) is locked or unlocked with the handlebar lower assembly by second locking assembly, the rear end of the side support assembly (32) is rotatably connected with the rear end of the chassis mechanism, and the middle part of the side support assembly (32) is rotatably connected with the lower half of the handlebar lower assembly (22).

2. A framework structure for a pushchair according to claim 1, wherein, When the handlebar upper assembly (21) and the handlebar lower assembly (22) move oppositely to a set angle, the second locking assembly can be linked to unlock or lock the front leg assembly (31) and the handlebar lower assembly.

3. A framework structure for a pushchair according to either claim 1 or claim 2, wherein, The handlebar mechanism further includes unlocking assembly (23), and the unlocking assembly (23) is arranged on the handlebar upper assembly (21) and linked with the first locking assembly.

4. A framework structure for a pushchair according to claim 1, wherein, The chassis mechanism includes front wheel assembly (11), rear wheel assembly (12) and two connecting rods (13), two connecting rods (13) are connected between the front wheel assembly (11) and the rear wheel assembly (12), and a gap is left between the two connecting rods (13); the lower end of the front leg assembly (31) is rotatably connected with the middle part of the two connecting rods (13) in front-rear direction respectively.

5. A framework structure for a pushchair according to claim 4, wherein The two connecting rods (13) and the rear wheel assembly (12) jointly enclose a triangle with small front end and large rear end, or the front wheel assembly (11), the two connecting rods (13) and the rear wheel assembly (12) jointly enclose a trapezoid with small front end and large rear end.

6. A framework structure for a pushchair according to claim 1 or 4 or 5 wherein, The handlebar upper assembly (21) includes upper handrail (211) and two upper push rods (212), and the upper ends of the two upper push rods (212) are connected with the left and right segments of the upper handrail (211) respectively. The handlebar lower assembly (22) includes two lower support rods (221), and the upper ends of the two lower support rods (221) are rotatably connected with the lower ends of the two upper push rods (212) respectively, and the lower support rods (221) are locked or unlocked with the upper push rods (212) by the first locking assembly. The front leg assembly (31) includes two front support legs (311), and the upper ends of the two front support legs (311) are rotatably connected with the lower ends of the two lower support rods (221) respectively, and the lower ends are rotatably connected with the left and right sides of the middle part of the chassis mechanism respectively. The side support assembly (32) includes two side support rods (321), and the left and right sides of the rear end of the chassis mechanism are rotatably connected with the two side support rods (321) respectively, and the middle parts are rotatably connected with the middle parts of the two lower support rods (221) respectively.

7. A framework structure for a pushchair according to claim 6, wherein In the unfolded state of the stroller, the front support leg (311) is arranged in line or at an angle with the lower support rod (221); in the folded state of the stroller, the connection between the front support leg (311) and the lower support rod (221) is arranged on the left / right outer side of the connecting rod (13) of the chassis mechanism.

8. A framework structure for a pushchair according to claim 6, wherein, The lower handle assembly (22) further comprises a handle connecting rod (222) connected between the middle portions of the two side support rods (321); and / or the side support assembly (32) further comprises an upper connecting rod (322) connected between the upper ends of the two side support rods (321) and / or a lower connecting rod (323) connected between the lower ends of the two side support rods (321).

9. A framework structure for a pushchair according to claim 1, wherein, A canopy assembly (41) is further included, which is rotatably connected to the upper end of the handle upper assembly (21), and the free end of the canopy assembly (41) can be moved between being unfolded in front of the handle upper assembly (21) and being attached to the back of the handle upper assembly.

10. A framework structure for a pushchair according to either claim 1 or claim 9, wherein, A seat assembly (42) is further included, which is arranged in front of the handle mechanism, the upper end of the seat assembly (42) is connected to the upper end of the handle upper assembly (21), the front side of the lower end of the seat assembly (42) is connected to the upper end of the side support assembly (32), and the rear side of the lower end of the seat assembly (42) is respectively connected to the lower end of the handle upper assembly (21) and the middle portion of the handle lower assembly (22).

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