Baby carriage
By designing the stroller's frame structure, its overall height is shortened when folded, solving the problem of the stroller's large size and space occupation when folded, and making it convenient to carry and store.
Patent Information
- Application Number
- CN202410462364.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2025-10-24
AI Technical Summary
Existing baby strollers are large in size when folded, occupying a lot of space and being inconvenient to carry and store.
Design a stroller that includes a base frame, an upper frame, a lower frame, and a rear frame. Through specific pivoting and movable connection methods, the upper frame and the lower frame, as well as the rear frame and the base frame, are brought close together to reduce the overall height and achieve a flat and foldable design.
The folded stroller is small in size, easy to carry and store, and takes up little space.
Smart Images
Figure CN120828849A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of infant products, in particular to a baby carriage. BACKGROUND
[0002] Baby carriages are widely used as infant carrying tools. In order to be more convenient to use, the general baby carriages are provided to be convertible between an unfolded state and a folded state. Thus, when the baby carriage is needed to be used, the baby carriage is in the unfolded state, and when the baby carriage is not needed to be used or is needed to be taken to other places, the baby carriage can be folded up. Because the volume of the folded baby carriage is smaller than that of the unfolded baby carriage, the folded baby carriage occupies less space.
[0003] However, the volume of some baby carriages on the market is still relatively large after being folded, and the occupied space is also relatively large, so that the storage and carrying are not very convenient. SUMMARY
[0004] The present application aims to overcome the above-mentioned shortcomings and provide a baby carriage with a small volume after being folded, which is convenient to carry and store.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:
[0006] A baby carriage is convertible between an unfolded state and a folded state. The baby carriage comprises a bottom support, an upper support, a lower support and a rear support. The lower side of the lower support is pivotally connected to the bottom support. The lower side of the upper support is movably connected to the upper side of the lower support. The upper side of the rear support is pivotally connected to the upper support, and the lower side of the rear support is pivotally connected to the bottom support. The pivot connection position of the bottom support and the lower support is located in front of the pivot connection position of the bottom support and the lower side of the rear support.
[0007] The lower side of the upper support is movably connected to the upper side of the lower support.
[0008] The bottom support comprises two bottom tubes. The lower support also comprises two lower connecting tubes. The upper support comprises two upper connecting tubes. The lower sides of the two lower connecting tubes are respectively pivotally connected to the front sides of the two bottom tubes. The lower sides of the two upper connecting tubes are respectively movably connected to the upper sides of the two lower connecting tubes.
[0009] The rear support comprises two rear connecting tubes. The upper sides of the two rear connecting tubes are respectively pivotally connected to the two upper connecting tubes. The lower sides of the two rear connecting tubes are respectively pivotally connected to the two bottom tubes.
[0010] The upper support further comprises an upper cross tube connected to the two upper connecting tubes. The bottom support further comprises a bottom cross tube connected to the rear sides of the two bottom tubes. The rear support comprises a rear connecting tube. The upper side of the rear connecting tube is pivotally connected to the upper cross tube. The lower side of the rear connecting tube is pivotally connected to the bottom cross tube.
[0011] The rear support comprises a rear connecting pipe, a first horizontal pipe connected to the upper side of the rear connecting pipe, a second horizontal pipe connected to the lower side of the rear connecting pipe, the left and right sides of the first horizontal pipe are respectively pivotally connected to two upper connecting pipes, and the left and right sides of the second horizontal pipe are respectively pivotally connected to two bottom pipes.
[0012] The rear connecting pipe is provided as one or two or more.
[0013] The upper side of the lower connecting pipe is movably arranged in the lower side of the upper connecting pipe.
[0014] The lower support further comprises a lower horizontal pipe connected to the left and right sides of the two lower connecting pipes, or / and the bottom support further comprises a front horizontal pipe connected to the left and right sides of the front sides of the two bottom pipes.
[0015] The stroller further comprises front wheels and rear wheels, the front wheels are connected to the lower side of the lower support or / and the front side of the bottom support, and the rear wheels are connected to the rear side of the bottom support or / and the lower side of the rear support.
[0016] Because the application adopts the above technical scheme, the following beneficial effects are achieved:
[0017] After folding, the overall height of the upper support and the lower support is shortened, and the upper support, the lower support and the rear support are close to the bottom support, so that the overall stroller after folding is very flat, the overall volume is small, and the carrying and storage do not need to occupy too much space, which is very convenient. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a planar schematic view of the first embodiment of the stroller of the application in an unfolded state;
[0019] Figure 2 It is a three-dimensional schematic view of the first embodiment of the stroller of the application in an unfolded state;
[0020] Figure 3 It is a planar schematic view of the first embodiment of the stroller of the application in a folding process;
[0021] Figure 4 It is a three-dimensional schematic view of the first embodiment of the stroller of the application in a folding process;
[0022] Figure 5 It is a planar enlarged schematic view of the first embodiment of the stroller of the application after folding;
[0023] Figure 6 It is a three-dimensional enlarged schematic view of the first embodiment of the stroller of the application after folding;
[0024] Figure 7 It is a three-dimensional schematic view of the second embodiment of the stroller of the application in an unfolded state;
[0025] Figure 8 is a plan view of a third embodiment of the baby stroller of the present invention in an unfolded state;
[0026] Figure 9 is a plan view of a fourth embodiment of the baby stroller of the present invention in an unfolded state;
[0027] Figure 10 FIG1 is a plan view of a fifth embodiment of a baby stroller according to the present invention in an unfolded state. DETAILED DESCRIPTION
[0028] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0029] The present invention discloses a baby carriage, such as Figures 1 to 6 The first embodiment of the baby stroller of the present invention is shown. In this embodiment, it can be converted between an expanded state and a folded state. The baby stroller includes a bottom bracket 1, an upper bracket 2, a lower bracket 3 and a rear bracket 4. The lower side of the lower bracket 3 is pivotally connected to the bottom bracket 1, and the lower side of the upper bracket 2 is connected to the lower bracket 3 so as to be relatively movable up and down. The upper side of the rear bracket 4 is pivotally connected to the upper bracket 2, and the lower side is pivotally connected to the bottom bracket 1. The pivotal position of the bottom bracket 1 and the lower bracket 3 is located in front of the pivotal position of the bottom bracket 1 and the lower side of the rear bracket 4.
[0030] When the stroller of the present invention is to be folded, the upper support 2 is moved downward and simultaneously rotated rearward and downward, or force is directly applied to the rear support 4 to rotate the rear support 4 forward and downward, so that the upper support 2 moves downward relative to the lower support 3 and the upper support 2 and the lower support 3 rotate backward and downward together, while the rear support 4 rotates forward and downward (such as Figure 3 、 4 As shown), until the components can no longer rotate or move relative to each other, the stroller is in the folded state (as shown Figure 5 、 6 Because the baby stroller of the present invention adopts the above arrangement, when folded, the overall height of the upper bracket 2 and the lower bracket 3 becomes shorter, and the upper bracket 2, the lower bracket 3 and the rear bracket 4 are all close to the bottom bracket 1, so that the baby stroller after folding is very flat and has a small overall volume. Therefore, it does not take up too much space when carried or stored, which is very convenient.
[0031] Electric devices can be arranged between the bottom support 1, the upper support 2, the lower support 3 and the rear support 4 to control the downward movement of the upper support 2 or the forward and downward rotation of the rear support 4. For example, a cylinder or a motor can be arranged between the bottom support 1 and the rear support 4 to pull the rear support 4 to rotate forward and downward when the cylinder or the motor is working, so as to fold the stroller. The electric devices can not be arranged and the stroller can be folded manually.
[0032] Preferably, the lower side of the upper support 2 is movably connected to the upper side of the lower support 3, so that the overall height of the upper support 2 and the lower support 3 is higher when the stroller is unfolded, so as to facilitate the parents to push the stroller. When the stroller is folded, the upper support 2 moves downward relative to the lower support 3 to reduce the overall height of the upper support 2 and the lower support 3, so as to not affect the overall size of the folded stroller.
[0033] The bottom support 1 comprises two bottom tubes 11, the lower support 3 comprises two lower connecting tubes 31, and the upper support 2 comprises two upper connecting tubes 21. The lower sides of the two lower connecting tubes 31 are respectively pivotally connected to the front sides of the two bottom tubes 11, and the lower sides of the two upper connecting tubes 21 are respectively movably connected to the lower sides of the two lower connecting tubes 31.
[0034] In the embodiment, the upper sides of the lower connecting tubes 31 are movably arranged in the lower sides of the upper connecting tubes 21. In this way, the overall structure of the unfolded stroller looks more compact, and the overall size of the upper support 2 and the lower support 3 is smaller when the stroller is folded. In other embodiments, the upper connecting tubes 21 can be movably connected to the outer sides of the lower connecting tubes 31.
[0035] In the embodiment, the upper support 2 further comprises an upper cross tube 22 connected to the two upper connecting tubes 21, and the bottom support 1 further comprises a bottom cross tube 12 connected to the rear sides of the two bottom tubes 11. The rear support 4 comprises a rear connecting tube 41, the upper side of which is pivotally connected to the upper cross tube 22, and the lower side of which is pivotally connected to the bottom cross tube 12. In this way, the upper side and the lower side of the rear support 4 are pivotally connected to the upper support and the bottom support, respectively.
[0036] The rear connecting tube 41 can be provided as a single one. When provided as a single one, preferably, the upper side of the rear connecting tube 41 is pivotally connected to the middle position of the upper connecting tube 21, and the lower side is pivotally connected to the middle position of the bottom cross tube 12, thereby making the force on the entire stroller more even and making the stroller more stable when deployed. In other embodiments, the rear connecting tubes can be provided as two or more at intervals, with the upper sides of the two or more rear connecting tubes pivotally connected to the upper cross tube 22 at intervals, and the lower sides pivotally connected to the bottom cross tube 12 at intervals. Under the above arrangement, the upper cross tube 21 can be fixedly connected, pivotally connected, or connected in any other feasible manner to the two upper connecting tubes 21. Similarly, the bottom cross tube 12 can be fixedly connected, pivotally connected, or connected in any other feasible manner to the two bottom tubes 11. In other words, the connection method between the upper cross tube 21 and the two upper connecting tubes 21 is not limited, and the connection method between the bottom cross tube 12 and the two bottom tubes 11 is not limited, as long as it can achieve the above functions.
[0037] In other embodiments (not shown), the rear bracket may further include a first transverse tube connected to the upper side of the rear connecting tube 41, with the left and right sides of the upper transverse tube respectively pivotally connected to the two first connecting tubes. Similarly, the rear bracket may further include a second transverse tube connected to the lower side of the rear connecting tube 41, with the left and right sides of the second transverse tube respectively pivotally connected to the two bottom tubes 11. This also achieves the purpose of pivotally connecting the upper and lower sides of the rear bracket 4 to the upper bracket 2 and the bottom bracket 1. Similarly, the rear connecting tube 41 may be provided as a single one, or as two or more at intervals.
[0038] Preferably, in order to make the stroller more stable, the lower bracket 3 further includes a lower transverse tube 32 connected to the two lower connecting tubes 31 on the left and right sides respectively; or / and, the bottom bracket 1 further includes a front transverse tube (not shown) connected to the front sides of the two bottom tubes 11 on the left and right sides respectively.
[0039] like Figure 7 As shown, in the second embodiment, the difference between the baby stroller and the aforementioned embodiment is that the rear support 4-1 includes two left and right rear connecting tubes 41-1, and the upper sides of the two rear connecting tubes 41-1 are respectively pivotally connected to the two upper connecting tubes 21-1, and the lower sides are respectively pivotally connected to the two bottom tubes 11-1.
[0040] In this embodiment, since the rear connecting tube 41-1 is provided as described above, the upper transverse tube and the bottom transverse tube may not be provided. However, in order to make the stroller more stable in the unfolded state, the bottom transverse tube 12-1 and the upper transverse tube 22-1 may be provided, or a bottom transverse tube connecting the left and right bottom tubes 11-1 may be provided at other appropriate positions.
[0041] The connection mode of the lower bracket and the bottom bracket can be that the lower end of the lower bracket 3 is pivotally connected to the front end of the bottom bracket 1, that is, the lower connecting tube 31 is pivotally connected to the front end of the bottom tube 11 (such as Figures 1-6Alternatively, the front end of the bottom bracket 1-2 extends outside the front side of the lower bracket 3-2 (as shown in FIG. Figure 8 As shown in the third embodiment), the front end of the bottom tube 11-2 on the same side extends out of the front side of the lower connecting tube 31-2; it can also be that the lower end of the lower bracket 3-3 extends out of the lower side of the bottom bracket 1-3 (as shown in the third embodiment). Figure 9 As shown in the fourth embodiment, the lower end of the lower connecting pipe 31-3 on the same side extends out of the lower side of the bottom pipe 11-3.
[0042] Similarly, the connection method of the bottom bracket and the rear bracket can be that the lower end of the rear bracket 4 is pivotally connected to the rear end of the bottom bracket 1, that is, the left and right ends of the bottom cross tube 12 are respectively connected to the rear ends of the left and right bottom tubes 11, and the lower end of the rear connecting tube 41 is connected to the bottom cross tube 12 (such as Figures 1-6 As shown), or, the lower end of the rear connecting pipe is pivotally connected to the rear end of the bottom pipe; it can also be, as shown Figure 7 、 8 As shown, the rear end of the bottom bracket 1-2 extends out of the rear side of the lower bracket 3-2, that is, the rear end of the bottom tube 11-2 extends out of the rear side of the rear connecting tube 41-2 or the second cross tube; it can also be that the lower end of the rear bracket 4-3 extends out of the lower side of the bottom bracket 1-3 (as shown in FIG. Figure 9 As shown), that is, the lower end of the rear connecting pipe 41-3 extends out of the lower side of the front bottom pipe 11-3, or the lower end of the rear connecting pipe extends out of the lower side of the bottom cross pipe.
[0043] The above-mentioned various connection modes of the lower bracket and the bottom bracket and the connection mode of the bottom bracket and the rear bracket can be arranged in various combinations, such as Figures 1-9 Several embodiments shown in FIG. Figure 10 As shown in the fifth embodiment, the front end of the bottom bracket 1-4 extends out of the front side of the lower bracket 3-4, and the lower end of the rear bracket 4-4 extends out of the lower side of the bottom bracket 1-4.
[0044] As stated Figure 8 、 9 The connections between the upper brackets 2-2, 2-3, 2-4 and other components in the different embodiments shown in FIG. 10 are the same as those in the other aforementioned embodiments, and the arrangement of the subsequent connecting pipes can also be the same as in the aforementioned embodiments.
[0045] The baby carriage further comprises a front wheel 5 and a rear wheel 6, wherein the front wheel 5 is connected to the lower side of the lower support or / and the front side of the bottom support, and the rear wheel 6 is connected to the rear side of the bottom support or / and the lower side of the rear support. Figure 8 As shown, the front wheel 5 is connected to the front side of the bottom bracket 1-2, and the rear wheel 6 is connected to the rear side of the bottom bracket 1-2; the connection method of the bottom bracket 1-1, the lower bracket 3-1 and the rear bracket 4-1 of the baby carriage is as follows Figure 9At this time, the front wheels 5 are connected to the lower side of the lower support 3-3, and the rear wheels 6 are connected to the lower side of the rear support 4-3.
[0046] Specifically, the front wheels 5 can be provided with two groups of left and right, and each group is connected to the front side of the bottom pipe 11 or / and the lower side of the lower connecting pipe 31 of the same side; or, two groups of front wheels are connected to the front cross pipe (such as Figure 8 , 10 When designed, a front cross pipe can be arranged on both sides of the two bottom pipes); or, two groups of front wheels are connected to the lower cross pipe (such as Figure 9 When designed, a lower cross pipe can be arranged on both sides of the two lower connecting pipes. Similarly, the rear wheels 6 can also be provided with two groups of left and right, and each group is connected to the rear side of the bottom pipe 11 or / and the lower side of the rear connecting pipe 41 of the same side, or, two groups of rear wheels are connected to the bottom cross pipe (such as Figure 8 When designed, a bottom cross pipe can be arranged on the rear side of the two bottom pipes). Also, the front wheels 5 can be provided with two groups, and the rear wheels 6 are provided with only one group, and the rear wheels 6 are connected to the bottom cross pipe. Or, the rear wheels 6 are provided with two groups, and the front wheels 5 are provided with only one group, and the one group of front wheels 5 is connected to the front cross pipe or the lower cross pipe.
[0047] The specific connection structure of the front wheels 5, the rear wheels 6 and other components can be any known and feasible structure, so it is not described here.
[0048] The stroller is also provided with a locking mechanism for locking it in an unfolded state and an unlocking structure for unlocking the locking mechanism. The locking mechanism can be arranged between the upper support 2 and the lower support 3 and used to limit the relative up-down movement of the two, or arranged between any two of the bottom support 1, the upper support 2, the lower support 3 and the rear support 4 and used to limit the relative rotation of the two. When the locking mechanism is in the locked state, the stroller cannot be folded; when the stroller is to be folded, the locking mechanism is unlocked by the unlocking structure, and then the upper support 2 is moved downward and the upper support 2 is rotated rearwardly downward or the rear support 4 is directly rotated forwardly downward, so that the stroller is folded.
[0049] The locking mechanism and the unlocking mechanism can be any known and feasible structure, as it is not the point of the invention, so it is not described here.
[0050] In the above orientation description, the orientations or position relationships indicated by "left", "right", "front", "back", "up", "down" and the like are based on the orientations or position relationships shown in the drawings, for example, in this application, the front wheel 5 is in front, the rear wheel 6 is in back, the upper support 2 is in up, the front wheel 5 and the rear wheel 6 are in down, and the two upper supports 2 are in left and right. These orientation descriptions are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and the above orientation or position relationship will also change when the visual observation changes, so it cannot be understood as a limitation on the application.
[0051] The above detailed description of the embodiments of the application is only a preferred embodiment of the application, and cannot be considered as limiting the scope of the application. Any equivalent changes and improvements made within the scope of the application shall still belong to the patent scope of the application.
Claims
1. A stroller convertible between an expanded state and a collapsed state, characterized by: The stroller comprises a bottom support, an upper support, a lower support and a rear support, the lower support is pivotally connected to the bottom support at its lower side, the upper support is movably connected to the lower support at its lower side, the rear support is pivotally connected to the upper support at its upper side and to the bottom support at its lower side, and the pivot connection position of the bottom support and the lower support is located in front of the pivot connection position of the bottom support and the rear support.
2. The stroller of claim 1, wherein: The upper support is movably connected to the lower support at its lower side.
3. The pram of claim 1 or 2, characterized in that: The bottom support comprises two bottom tubes, the lower support comprises two lower connecting tubes, and the upper support comprises two upper connecting tubes, the lower sides of the two lower connecting tubes are respectively pivotally connected to the front sides of the two bottom tubes, and the lower sides of the two upper connecting tubes are respectively movably connected to the two lower connecting tubes.
4. The stroller of claim 3, wherein: The rear support comprises two rear connecting tubes, the upper sides of the two rear connecting tubes are respectively pivotally connected to the two upper connecting tubes, and the lower sides of the two rear connecting tubes are respectively pivotally connected to the two bottom tubes.
5. The stroller of claim 3, wherein: The upper support further comprises an upper cross tube connected to the two upper connecting tubes, and the bottom support further comprises a bottom cross tube connected to the rear sides of the two bottom tubes, the rear support comprises a rear connecting tube, the upper side of the rear connecting tube is pivotally connected to the upper cross tube, and the lower side of the rear connecting tube is pivotally connected to the bottom cross tube.
6. The stroller of claim 3, wherein: The rear support comprises a rear connecting tube, a first cross tube connected to the upper side of the rear connecting tube, and a second cross tube connected to the lower side of the rear connecting tube, the left and right sides of the first cross tube are respectively pivotally connected to the two upper connecting tubes, and the left and right sides of the second cross tube are respectively pivotally connected to the two bottom tubes.
7. The pram of claim 5 or 6, characterized in that: The rear connecting tube is provided as one or two or more.
8. The pram of any one of claims 3 to 7, characterized in that: The upper side of the lower connecting tube is movably arranged in the lower side of the upper connecting tube.
9. The pram of any one of claims 3 to 8, characterized in that: The lower support further comprises a lower cross tube connected to the two lower connecting tubes, and / or the bottom support further comprises a front cross tube connected to the front sides of the two bottom tubes.
10. The stroller of any one of claims 1 to 9, wherein: The stroller further comprises a front wheel and a rear wheel, the front wheel is connected to the lower side of the lower support and / or the front side of the bottom support, and the rear wheel is connected to the rear side of the bottom support and / or the lower side of the rear support.