Swivel connection device for a child's carriage

Abstract

The utility model relates to a kind of rotary connecting device and baby carriage, the rotary connecting device includes the first connecting seat and the second connecting seat of rotary connection, and first locking piece and first unlocking piece, one of the two components of the first unlocking piece and the first locking piece is provided with driving block, another component is provided with the matching structure of sliding cooperation with the driving block, when driving first unlocking piece rotates, it can make first locking piece translation and move from locking position to unlocking position, realize the unlocking between first connecting seat and second connecting seat.The rotary connecting device has less components, simple structure, convenient operation, also make the baby carriage using the rotary connecting device more convenient when unlocking, bring convenience for the daily use of user.

Description

Technical Field

[0001] This utility model relates to the field of load-bearing products, specifically to a rotating connecting device and a stroller. Background Technology

[0002] Strollers offer great convenience for people taking children out. A stroller includes a frame with multiple rotating supports. The relative rotation between these supports allows the stroller to switch between an unfolded and folded state. Currently, the rotating connections of these supports are made using rotating connection devices to allow relative rotation when unlocked and relative fixation when locked. However, most current rotating connection devices are quite complex in structure and present inconvenience during unlocking. Utility Model Content

[0003] The purpose of this invention is to provide a rotating connection device to solve one or more problems of the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A rotary connection device, the rotary connection device comprising:

[0006] First connecting seat;

[0007] The second connecting seat is rotatably connected to the first connecting seat about the rotation center line;

[0008] The locking mechanism includes a first locking member, which is movably disposed between the first connecting seat and the second connecting seat along the rotation center line. The first locking member has a locked position and an unlocked position. When the first locking member is in the locked position, the locking mechanism is in a locked state, thereby locking the first connecting seat and the second connecting seat to each other. When the first locking member is in the unlocked position, the locking mechanism is in an unlocked state, thereby allowing the first connecting seat and the second connecting seat to rotate relative to each other.

[0009] A first unlocking element is rotatably disposed relative to a first locking element about a rotation center line, wherein the rotation center line extends parallel to or collinear with the rotation center line.

[0010] In this design, one of the two components, the first unlocking component and the first locking component, is provided with a driving block, and the other component is provided with a mating structure that slides with the driving block. The mating structure has a first mating part and a second mating part. When the first unlocking component and the first locking component rotate relative to each other, the distance between the first unlocking component and the first locking component changes as the driving block changes from mating with the first mating part to mating with the second mating part, causing the first locking component to change from a locked position to an unlocked position.

[0011] Preferably, the mating structure further includes a guide portion disposed between the first mating portion and the second mating portion. There are two sets of guide portions. During the process of the first unlocking member rotating relative to the first locking member in a first direction around the rotation center line, or the first unlocking member rotating relative to the first locking member in a second direction opposite to the first direction around the rotation center line, the driving block can move along the guide portion and move from the first mating portion to the second mating portion.

[0012] In some embodiments, the first mating portion, a group of the guide portions, the second mating portion, and another group of the guide portions are sequentially distributed on the same circumference centered on the rotation center line.

[0013] In some embodiments, the first mating portion is a recessed groove in a direction away from the driving block, and the guide portion is an arc-shaped inclined surface that connects with the first mating portion and the second mating portion. The arc-shaped inclined surface extends obliquely from one end of the groove toward the second mating portion and gradually toward the driving block.

[0014] In some embodiments, the first mating part is arc-shaped. When the driving block and the first mating part are engaged, during the process of the first unlocking member rotating relative to the first locking member around the rotation center line, the driving block slides along the first mating part, and the first locking member remains in the locked position.

[0015] In some embodiments, the mating structure and the driving block have two sets of corresponding arrangements, and the two sets of mating structures are respectively distributed on different circumferences centered on the rotation center line.

[0016] In some embodiments, the mating structure is disposed on the first locking member and the driving block is disposed on the first unlocking member, wherein when the first locking member translates from the locking position toward the unlocking position, the first locking member moves toward the first connecting seat and away from the second connecting seat.

[0017] In some embodiments, the rotating connection device further includes a third connecting seat, which is rotatably connected to the first connecting seat about the rotation center line, and the first unlocking member is connected to the third connecting seat so as to be able to rotate synchronously with the third connecting seat.

[0018] In some embodiments, the rotary connection device further includes a second locking member and a second unlocking member movably disposed between the third connecting seat and the first connecting seat. When the second locking member engages with both the first connecting seat and the third connecting seat simultaneously, the third connecting seat and the first connecting seat are locked together. The second unlocking member engages with the second locking member to drive the second locking member to move and disengage it from the third connecting seat or the first connecting seat.

[0019] In some embodiments, the second locking member is translatably disposed between the first connecting seat and the third connecting seat along the extension direction of the rotation center line, and a driving structure is provided between the second locking member and the second unlocking member so that the second locking member is driven to translate when the second unlocking member rotates.

[0020] This utility model also provides a stroller, including a first bracket and a second bracket, wherein one end of the first bracket and one end of the second bracket are connected by a rotating connection device as described above.

[0021] In some embodiments, the stroller further includes a third bracket, which is rotatably connected to the first bracket about the rotation center line, and the unlocking member engages with the third bracket to be able to rotate synchronously with the third bracket.

[0022] In some embodiments, during the process of the stroller changing from an unfolded state to a folded state, the third bracket rotates and retracts with the first bracket or the second bracket, prior to the first bracket and the second bracket rotating and retracting with each other.

[0023] Due to the application of the above technical solution, this utility model has the following advantages: The rotary connecting device provided by this utility model can provide a rotary connection and locking between the first connecting seat and the second connecting seat. When the first unlocking member is driven to rotate, the first locking member can be translated and moved from the locked position to the unlocked position, thereby realizing the unlocking between the first connecting seat and the second connecting seat. This rotary connecting device has few components, a simple structure, and is easy to operate.

[0024] The stroller provided by this utility model has multiple brackets that are rotatably connected by the aforementioned rotating connection device. By rotating the brackets, the first unlocking component is driven to rotate, thereby unlocking the first bracket from the second bracket. The unlocking operation is convenient and facilitates the user's daily use. Attached Figure Description

[0025] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a side view of the stroller in its first use state according to an embodiment of the present invention;

[0027] Figure 2 for Figure 1 A side view diagram of the stroller during the folding process;

[0028] Figure 3 for Figure 1 A side view diagram of the stroller in its folded state;

[0029] Figure 4 for Figure 1 A side view diagram of the stroller when it is switched to its second use mode;

[0030] Figure 5 for Figure 4 A side view diagram of the stroller during the folding process;

[0031] Figure 6 for Figure 4 A side view diagram of the stroller in its folded state;

[0032] Figure 7 for Figure 1 A structural breakdown diagram of some components in a children's stroller;

[0033] Figure 8 for Figure 7 Enlarged diagram of section A in the middle;

[0034] Figure 9 for Figure 7 A schematic diagram of the connection structure between the third bracket and the first unlocking component;

[0035] Figure 10 for Figure 7 A schematic diagram of the structure of the first locking component;

[0036] Figure 11 for Figure 7 A schematic diagram of the structure of the first unlocking component;

[0037] Figure 12 for Figure 11 A structural schematic diagram of the first unlocking component from another perspective;

[0038] Figure 13 for Figure 1 A structural breakdown diagram of some components in a children's stroller;

[0039] Figure 14 for Figure 13 Enlarged schematic diagram of section B in the middle;

[0040] Figure 15 for Figure 1 A structural breakdown diagram of some components in a children's stroller;

[0041] Figure 16 for Figure 15 Enlarged diagram of section C;

[0042] Figure 17 for Figure 1 A longitudinal sectional view of the stroller.

[0043] Figure 18 for Figure 17 A structural diagram illustrating the folding process of a stroller;

[0044] Figure 19 for Figure 17 A schematic diagram of the stroller in its folded state;

[0045] Figure 20 for Figure 4 A longitudinal sectional view of the stroller.

[0046] Figure 21 for Figure 20 A structural diagram illustrating the folding process of a stroller;

[0047] Figure 22 for Figure 21 A schematic diagram of the stroller in its folded state;

[0048] In the attached diagrams above:

[0049] 10. First support; 101. First rod; 102. First tooth groove;

[0050] 20. Second bracket; 201. Second rod; 202. Second tooth groove;

[0051] 30. Third support; 301. Third rod; 302. Third tooth groove;

[0052] 40. First-round components; 50. Second-round components;

[0053] 100. Rotary connecting device; 1. First connecting seat; 2. Second connecting seat; 3. Third connecting seat; 4. First locking element; 41. First mating part; 42. Second mating part; 43. Guide part; 44. First locking tooth; 45. Through hole; 5. First unlocking element; 51. Drive block; 52. First rotating part; 53. Second rotating part; 54. Mounting hole; 6. Second locking element; 61. Second locking tooth; 7. Second unlocking element; 8. Rotating shaft; 81. First shaft section; 82. Second shaft section; 9. Seat pocket connecting seat. Detailed Implementation

[0054] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0055] In this document, the terms “up,” “down,” “left,” “right,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings with the stroller in the unfolded state. They are used only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0056] See Figures 1 to 6 As shown, the stroller provided in this embodiment includes a first support 10 and a second support 20 rotatably connected to each other, a first wheel assembly 40 disposed at the bottom of the first support 10, and a second wheel assembly 50 disposed at the bottom of the second support 20. The stroller also includes a third support 30, which is rotatably connected to the first support 10 and the second support 20. In the unfolded state, the first support 10 and the second support 20 are unfolded relative to each other at a certain angle, and the first wheel assembly 40 and the second wheel assembly 50 are spaced apart in the front-to-back direction, allowing the stroller to be supported on the ground. The third support 30 is a push rod frame, which can rotate relative to the first support 10 and the second support 20 to switch its position when pushed, and can also be folded relative to the first support 10 and the second support 20 to allow the stroller to be folded.

[0057] The stroller also includes a seat connector 9 for mounting a seat assembly, which is fixed to the upper part of the first bracket 10 or the upper part of the second bracket 20. When switching the usage position during pushing, the third bracket 30 can change the orientation of the seat assembly without altering its position, allowing for convenient selection of whether the child in the seat is facing forward or towards the person pushing the stroller.

[0058] like Figure 1 As shown, the third support 30 is currently in the first usage position, in which the third support 30 and the first support 10 are located on the same side; when it is necessary to fold the stroller, as... Figure 2 As shown, the third support 30 is rotated relative to the first support 10 so that it folds up to one side of the first support 10, and then the second support 20 is folded up to the other side of the first support 10, thus folding the stroller into shape as shown. Figure 3 The structure shown. (As illustrated) Figure 4 As shown, the third support 30 is currently in the second usage position. In this second usage position, the third support 30 and the second support 20 are on the same side. When it is necessary to fold the stroller, as... Figure 5 As shown, the third support 30 is rotated relative to the second support 20 to fold it to one side of the second support 20, and then the first support 10 is folded to the other side of the second support 20, thus folding the stroller into shape as shown. Figure 6 The structure shown.

[0059] The first support 10, the second support 20, and the third support 30 are rotatably connected by a rotatable connecting device 100. The first support 10 includes a first rod 101 and a first connecting seat 1 at one end of the first rod 101; the second support 20 includes a second rod 201 and a second connecting seat 2 at one end of the second rod 201; and the third support 30 includes a third rod 301 and a third connecting seat 3 at one end of the third rod 301. The first connecting seat 1, the second connecting seat 2, and the third connecting seat 3 are rotatably connected.

[0060] Referring to the accompanying drawings, the second connecting seat 2 and the first connecting seat 1 are rotatably connected about the rotation center line X. The rotating connection device 100 also includes a locking mechanism disposed between the first connecting seat 1 and the second connecting seat 2 to lock them together. The locking mechanism includes a first locking member 4, which is translatably disposed between the first connecting seat 1 and the second connecting seat 2 along the rotation center line X. The first locking member 4 has a locked position and an unlocked position. When the first locking member 4 is in the locked position, the first connecting seat 1 and the second connecting seat 2 are locked together and cannot rotate relative to each other. When the first locking member 4 is in the unlocked position, the locking mechanism is in an unlocked state, allowing the first connecting seat 1 and the second connecting seat 2 to rotate relative to each other. The first locking member 4 switches between the locked position and the unlocked position during its translation along the rotation center line X.

[0061] See Figures 13 to 16As shown, in this locking mechanism, the outer periphery of the first locking member 4 is provided with a plurality of first locking teeth 44, the first connecting seat 1 is provided with a first tooth groove 102, and the second connecting seat 2 is provided with a second tooth groove 202. Both the first tooth groove 102 and the second tooth groove 202 have a plurality of teeth spaced apart on a circumference centered on the rotation center line X. All the first locking teeth 44 can be inserted into the plurality of first tooth grooves 102 and the plurality of second tooth grooves 202 in a corresponding axial manner. When the first locking member 4 is in the locked position, one end of the first locking tooth 44 on the first locking member 4 is inserted into the first tooth groove 102 and the other end is inserted into the second tooth groove 202, so that the first connecting seat 1 and the second connecting seat 2 cannot rotate relative to each other. When the first locking member 4 is in the unlocked position, the first locking tooth 44 is disengaged from either the first tooth groove 102 or the second tooth groove 202, so that the first connecting seat 1 and the second connecting seat 2 can rotate around the rotation center line X.

[0062] The rotating connection device 100 also includes a first unlocking member 5, which is rotatably arranged relative to the first locking member 4 about the rotation center line so as to drive the first locking member 4 to translate during rotation, thereby enabling the first locking member 4 to move from the locked position to the unlocked position. The aforementioned rotation center line and rotation center line X extend parallel to each other or collinearly. Here, the rotation center line and rotation center line X extend collinearly.

[0063] Specifically, in this embodiment, the first unlocking member 5 is provided with a driving block 51, and the first locking member 4 is provided with a sliding engagement structure that engages with the driving block 51. This engagement structure has a first engagement portion 41 and a second engagement portion 42. The relative rotation of the first unlocking member 5 and the first locking member 4 causes the distance between them to change as the driving block 51 engages with the first engagement portion 41 and then with the second engagement portion 42. This changes the distance between the first unlocking member 5 and the first locking member 4, thereby causing the first locking member 4 to change from a locked position to an unlocked position. The locking mechanism also includes a first elastic member (not shown in the figure), which provides the force required for the first locking member 4 to move toward the first unlocking member 5, i.e., provides the force required for the first locking member 4 to move toward the locked position. This ensures that the first locking member 4 remains in the locked position when not driven to translate by the first unlocking member 5, thus maintaining the locking mechanism in the locked state. Of course, in other embodiments, the driving block 51 can be disposed on the first locking member 4, and the above-mentioned cooperating structure can be disposed on the first unlocking member 5. When the first unlocking member 5 and the first locking member 4 rotate relative to each other, the first locking member 4 can switch between the above-mentioned locking position and unlocking position through the cooperation of the driving block 51 and the cooperating structure.

[0064] See Figure 10As shown, in this embodiment, the mating structure further includes a guide portion 43 disposed between the first mating portion 41 and the second mating portion 42. There are two sets of guide portions 43. During the rotation of the first unlocking member 5 relative to the first locking member 4 about a first direction around the rotation center line, or during the rotation of the first unlocking member 5 relative to the first locking member 4 about a second direction opposite to the first direction around the rotation center line, the driving block 51 can move along the guide portion 43 and move from the first mating portion 41 to the second mating portion 42. Viewed along the direction extending from the rotation center line, one of the first and second directions is clockwise, and the other is counterclockwise. That is, when the first locking member 4 is in the locked position, driving the first unlocking member 5 to rotate relative to the first locking member 4 in any direction will cause the first locking member 4 to translate to the unlocked position, thus unlocking the locking mechanism.

[0065] In the above-mentioned mating structure, the first mating part 41, a set of guide parts 43, the second mating part 42 and another set of guide parts 43 are distributed sequentially on the same circumference centered on the rotation center line. During the process of the first unlocking member 5 rotating relative to the first locking member 4 around the rotation center line, the driving block 51 mats with one of the first mating part 41, the set of guide parts 43, the second mating part 42 and the other set of guide parts 43.

[0066] See Figure 10 As shown, the first mating part 41 is a recessed groove away from the driving block 51, and the guide part 43 is an arc-shaped inclined surface that connects with the first mating part 41 and the second mating part 42. This arc-shaped inclined surface extends obliquely from one end of the groove toward the second mating part 42 and gradually approaches the driving block 51. The second mating part 42 is specifically the axial end face of the first locking member 4. When the driving block 51 and the first mating part 41 are mated together and located in the groove, the distance between the first locking member 4 and the first unlocking member 5 is small, and the first locking member 4 is in the locked position. When the first unlocking member 5 rotates relative to the first locking member 4, causing the driving block 51 to slide along the arc-shaped inclined surface of the guide part 43 from the first mating part 41 to the second mating part 42, that is, when the driving block 51 abuts against the axial end face of the first locking member 4, the distance between the first locking member 4 and the first unlocking member 5 increases. At this time, the first locking tooth 44 on the first locking member 4 can disengage from either the first tooth groove 102 or the second tooth groove 202, thereby unlocking the locking mechanism. Specifically, the first locking member 4 is positioned near the first connecting seat 1, and the first unlocking member 5 is positioned between the first locking member 4 and the second connecting seat 2. When the first locking member 4 moves from the locked position to the unlocked position, the first locking member 4 moves toward the first connecting seat 1 and away from the second connecting seat 2, thereby unlocking the locking mechanism.

[0067] In this embodiment, two sets of mating structures and driving blocks 51 are correspondingly arranged. These two sets of mating structures are distributed on different circumferences centered on the rotation center line, thus staggered along the radial direction of the first locking member 4. This allows both the first mating part 41 and the second mating part 42 to have a large radius, enabling the first unlocking member 5 to rotate relative to the first locking member 4 within a certain angle range when the first locking member 4 is in either the locked or unlocked position. Simultaneously, the simultaneous engagement of the two sets of driving blocks 51 with the mating structures makes the engagement between the first locking member 4 and the first unlocking member 5 more stable and reliable, and the first locking member 4 more stable during driven translation. Here, the two sets of driving blocks 51 are distributed at a 180° interval.

[0068] In this embodiment, the first mating part 41 is arc-shaped, specifically an arc-shaped groove. When the driving block 51 and the first mating part 41 are engaged, during the rotation of the first unlocking member 5 relative to the first locking member 4 around the rotation center line, the driving block 51 slides along the first mating part 41, and the first locking member 4 remains in the locked position. That is to say, in this rotating connection device 100, even when the first connecting seat 1 and the second connecting seat 2 are locked by the locking mechanism, the first unlocking member 5 can still rotate relative to the first locking member 4 within a certain angle range.

[0069] Specifically, in the stroller of this embodiment, the third connecting seat 3 is rotatably connected to the first connecting seat 1 around a rotation center line, and the first unlocking member 5 is connected to the third connecting seat 3 so as to rotate synchronously with the third connecting seat 3. Thus, when the first bracket 10 and the second bracket 20 are locked together, the third bracket 30 with the third connecting seat 3 can rotate relative to the first bracket 10 and the second bracket 20 within a certain angle range. Here, the third bracket 30 is a push rod bracket, and correspondingly, its position can be switched when rotating within the aforementioned angle range. Figure 2 The first usage position shown is... Figure 5 Switch between the second usage positions shown.

[0070] See Figures 7 to 16 As shown, the rotating connection device 100 also includes a second locking member 6 and a second unlocking member 7 movably disposed between the third connecting seat 3 and the first connecting seat 1. When the second locking member 6 engages with both the first connecting seat 1 and the third connecting seat 3 simultaneously, the first connecting seat 1 and the third connecting seat 3 are locked together. The second unlocking member 7 engages with the second locking member 6 to drive the second locking member 6 to move and disengage it from the third connecting seat 3 or the first connecting seat 1, thereby unlocking the first connecting seat 1 and the third connecting seat 3, and allowing the third connecting seat 3 to rotate relative to the first connecting seat 1.

[0071] Specifically, the second locking member 6 is movably disposed between the first connecting seat 1 and the third connecting seat 3 along the extension direction of the rotation center line. It unlocks when it moves away from the third connecting seat 3. Here, the outer periphery of the second locking member 6 is provided with multiple second locking teeth 61, and the third connecting seat 3 is correspondingly provided with a third tooth groove 302. The side of the first connecting seat 1 facing the third connecting seat 3 is also correspondingly provided with a fourth tooth groove (not shown in the figure). When both ends of the second locking teeth 61 are simultaneously located in the third tooth groove 302 and the fourth tooth groove, the second locking member 6 is in a locked state; and when the second locking member 6 moves so that the second locking teeth 61 disengage from the third tooth groove 302, the second locking member 6 switches to an unlocked state. A second elastic member (not shown in the figure) is also provided between the second locking member 6 and the first connecting seat 1 to provide the required force for the second locking member 6 towards the third connecting seat 3.

[0072] The second unlocking member 7 is disposed between the second locking member 6 and the third connecting seat 3, and is rotatably disposed relative to the third connecting seat 3 about a rotation center line. A driving structure is provided between the second locking member 6 and the second unlocking member 7 so that the second locking member 6 can be driven to translate when the second unlocking member 7 rotates. Specifically, the driving structure can be configured as an inclined structure on the end faces of the second unlocking member 7 and the second locking member 6 facing each other, and an unlocking operation member is provided on the third bracket 30. The unlocking operation member is connected to the second unlocking member 7 by a traction member. Thus, by operating the unlocking operation member, the second unlocking member 7 is pulled by the traction member to rotate, thereby unlocking it through the second locking member 6.

[0073] In a specific configuration, a rotating shaft 8 is fixed on the third connecting seat 3. This rotating shaft 8 has a first shaft segment 81 and a second shaft segment 82 connected axially. The first shaft segment 81 has an irregular cross-section, specifically a square shape; the second shaft segment 82 has a circular cross-section. The second shaft segment 82 is fixed to the third connecting seat 3, and the axis of rotation of the rotating shaft 8 forms the rotation center line X and the rotation center line. The second unlocking member 7, the second locking member 6, and the first connecting seat 1 are all rotatably connected around the second shaft segment 82. The first unlocking member 5 is fitted onto the first shaft segment 81, and the other end of the first shaft segment 81 is rotatably connected to the second connecting seat 2 via a pin (not shown in the figure). The first unlocking member 5 has a mounting hole 54, and the first shaft segment 81 is correspondingly fitted into the mounting hole 54 to achieve a mounting connection with the first unlocking member 5, so that when the third connecting seat 3 rotates synchronously with the rotating shaft 8, it also drives the first unlocking member 5 to rotate synchronously.

[0074] The first unlocking component 5 specifically includes a first rotating part 52 and a second rotating part 53. The outer diameter of the first rotating part 52 is smaller than the outer diameter of the second rotating part 53, and a stepped surface is formed between them to facilitate axial positioning when it is installed with the first locking component 4. The first locking component 4 is provided with a through hole 45 that extends axially. The first rotating part 52 is rotatably fitted into the through hole 45. Two sets of driving blocks 51 are respectively arranged on the end face of the second rotating part 53 facing the first rotating part 52.

[0075] The following details the specific usage of the stroller in this embodiment:

[0076] See Figure 1 , Figure 17 As shown, the stroller is in the unfolded state, with the third support 30 in the first use position. The third support 30 and the first support 10 are located on the same side of the rotation center line X. The person pushing the stroller stands on the same side of the third support 30 and the first support 10, facing the direction of the second support 20. At this time, the first locking member 4 is in the locked state, and the two sets of driving blocks 51 of the first unlocking member 5 respectively cooperate with the two sets of first mating parts 41, and are located in the groove of the first mating part 41 near the guide part 43 on one side.

[0077] When the stroller needs to be folded, first unlock the third bracket 30 from the first bracket 10, so that the second locking member 6 is in the unlocked state. Then, flip the third bracket 30 downwards so that it flips and folds towards the side of the first bracket 10. During the rotation of the third bracket 30 around the rotation center line, the two sets of drive blocks 51 move along the corresponding guide parts 43 to engage with the second mating parts 42. In this process, the first locking member 4 is driven away from the first unlocking member 5, thereby moving from the locked position to the unlocked position, so that the first bracket 10 and the second bracket 20 are unlocked. Figure 18 As shown. Next, by driving the third support 30, the first support 10 and the second support 20 to rotate and fold together, the stroller can be folded.

[0078] exist Figure 17 In the indicated state, when it is necessary to switch the third bracket 30 to the second usage position, first unlock the third bracket 30 from the first bracket 10, so that the second locking member 6 is switched to the unlocked state. Then, rotate the third bracket 30 towards the second bracket 20. At this time, the two sets of driving blocks 51 slide along the arc-shaped grooves of the corresponding first mating parts 41 until they reach the guide part 43 on the other side of the groove in the first mating part 41, thus completing the switching of the usage position of the third bracket 30 and forming... Figure 4 , Figure 20In the state shown, the third support 30 and the second support 20 are located on the same side of the rotation center line X. The person pushing the stroller stands on the same side of the third support 30 and the second support 20, facing the direction of the first support 10 and pushes the stroller. During the above process, the first locking member 4 is not driven by the first unlocking member 5 and remains in the locked position, and the first support 10 and the second support 20 remain in the locked state.

[0079] exist Figure 20 In the state shown, when the stroller needs to be folded, similarly, first unlock the third bracket 30 and the second bracket 20, so that the second locking member 6 is switched to the unlocked state. Then, flip the third bracket 30 downwards so that it flips and folds towards the side of the second bracket 20. During the rotation of the third bracket 30 around the rotation center line, the two sets of drive blocks 51 move along the corresponding guide parts 43 to engage with the second mating parts 42. In this process, the first locking member 4 is driven away from the first unlocking member 5, thereby moving from the locked position to the unlocked position, so that the first bracket 10 and the second bracket 20 are unlocked. Figure 21 As shown. Next, the third support 30, the first support 10 and the second support 20 are driven to rotate and fold together. During this process, the drive block 51 remains engaged with the second mating part 42, thus completing the folding of the stroller.

[0080] In summary, in the stroller provided in this embodiment, when the third bracket 30 can rotate around the rotation center line to any side, it can drive the first unlocking member 5 to rotate and drive the first locking member 4 to translate, thereby releasing the lock between the first bracket 10 and the second bracket 20.

[0081] Furthermore, while the first bracket 10 and the second bracket 20 are locked together, the third bracket 30 can be driven to rotate relative to the first bracket 10 and the second bracket 20, thereby changing the position of the third bracket 30. In this way, the push rod frame can be used in different directions while providing stable support for the stroller, which is convenient for users' daily use.

[0082] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0083] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. In the event of any contradiction or inconsistency between the definitions used herein and those contained in other published documents, the definitions used herein shall prevail.

[0084] It should also be noted that "rotational connection" in the above embodiments refers to pivot connection, unless the context clearly indicates other rotational connection methods.

[0085] As indicated in this specification and claims, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0086] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0087] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0088] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made based on the essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A rotating connection device, characterized in that, The rotary connection device includes: First connecting seat; The second connecting seat is rotatably connected to the first connecting seat about the rotation center line; The locking mechanism includes a first locking member, which is movably disposed between the first connecting seat and the second connecting seat along the rotation center line. The first locking member has a locked position and an unlocked position. When the first locking member is in the locked position, the locking mechanism is in a locked state, thereby locking the first connecting seat and the second connecting seat to each other. When the first locking member is in the unlocked position, the locking mechanism is in an unlocked state, thereby allowing the first connecting seat and the second connecting seat to rotate relative to each other. A first unlocking element is rotatably disposed relative to a first locking element about a rotation center line, wherein the rotation center line extends parallel to or collinear with the rotation center line. In this design, one of the two components, the first unlocking component and the first locking component, is provided with a driving block, and the other component is provided with a mating structure that slides with the driving block. The mating structure has a first mating part and a second mating part. When the first unlocking component and the first locking component rotate relative to each other, the distance between the first unlocking component and the first locking component changes as the driving block changes from mating with the first mating part to mating with the second mating part, causing the first locking component to change from a locked position to an unlocked position.

2. The rotating connection device according to claim 1, characterized in that: The mating structure further includes a guide portion disposed between the first mating portion and the second mating portion. There are two sets of guide portions. During the process of the first unlocking member rotating relative to the first locking member around the rotation center line in a first direction, or the first unlocking member rotating relative to the first locking member around the rotation center line in a second direction opposite to the first direction, the driving block can move along the guide portion and move from the first mating portion to the second mating portion.

3. The rotating connection device according to claim 2, characterized in that: The first mating part, a group of the guide parts, the second mating part, and another group of the guide parts are distributed sequentially on the same circumference centered on the rotation center line.

4. The rotating connection device according to claim 2, characterized in that: The first mating part is a recessed groove in the direction away from the driving block, and the guide part is an arc-shaped inclined surface that connects with the first mating part and the second mating part. The arc-shaped inclined surface extends obliquely from one end of the groove toward the second mating part and gradually toward the driving block.

5. The rotating connection device according to claim 1, characterized in that: The first mating part is arc-shaped. When the driving block and the first mating part are mated, during the process of the first unlocking member rotating relative to the first locking member around the rotation center line, the driving block slides along the first mating part, and the first locking member remains in the locked position.

6. The rotating connection device according to claim 1, characterized in that: The mating structure and the driving block have two sets of corresponding arrangements, and the two sets of mating structures are respectively distributed on different circumferences centered on the rotation center line.

7. The rotating connection device according to claim 1, characterized in that: The mating structure is disposed on the first locking member, and the driving block is disposed on the first unlocking member. When the first locking member moves from the locking position to the unlocking position, the first locking member moves toward the first connecting seat and away from the second connecting seat.

8. The rotating connection device according to claim 7, characterized in that: The rotating connection device further includes a third connecting seat, which is rotatably connected to the first connecting seat about the rotation center line, and the first unlocking member is connected to the third connecting seat so that it can rotate synchronously with the third connecting seat.

9. The rotating connection device according to claim 8, characterized in that: The rotary connection device further includes a second locking member and a second unlocking member movably disposed between the third connecting seat and the first connecting seat. When the second locking member engages with both the first connecting seat and the third connecting seat simultaneously, the third connecting seat and the first connecting seat are locked together. The second unlocking member engages with the second locking member to drive the second locking member to move and disengage it from the third connecting seat or the first connecting seat.

10. The rotating connection device according to claim 9, characterized in that: The second locking member is translatably disposed between the first connecting seat and the third connecting seat along the extension direction of the rotation center line. A driving structure is provided between the second locking member and the second unlocking member so that the second locking member is driven to translate when the second unlocking member rotates.

11. A children's stroller, characterized in that: It includes a first bracket and a second bracket, wherein one end of the first bracket and one end of the second bracket are connected by a rotating connection device as described in any one of claims 1 to 10.

12. The stroller according to claim 11, characterized in that: It also includes a third bracket, which is rotatably connected to the first bracket about the rotation center line, and the unlocking member engages with the third bracket to rotate synchronously with the third bracket.

13. The stroller according to claim 12, characterized in that: During the process of the stroller changing from an unfolded state to a folded state, the third bracket rotates and retracts with the first bracket or the second bracket, prior to the first bracket and the second bracket rotating and retracting with each other.

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