Locking device and carrier

Abstract

The utility model discloses a locking device and carrier relates to the technical field of riding appliance, and the locking device includes first locking mechanism, second locking mechanism, second unlocking mechanism, and first locking mechanism sets up between first connecting piece and second connecting piece, is used for locking the relative position of first connecting piece and second connecting piece, and second locking mechanism sets up between second connecting piece and third connecting piece, is used for locking the relative position of second connecting piece and third connecting piece, and second unlocking mechanism second unlocking mechanism is used to drive second locking mechanism to unlock, and can drive first locking mechanism synchronous unlocking in the process of second locking mechanism unlocking, and first connecting piece and second connecting piece all rotate relative third connecting piece after second locking mechanism unlocking, thereby make the user only realizes first connecting piece, second connecting piece and third connecting piece's unlocking with once unlocking action, and the operation is convenient, improves user experience.

Description

Technical Field

[0001] This utility model relates to the field of riding equipment technology, and in particular to locking devices and vehicles. Background Technology

[0002] Common passenger vehicles, such as strollers and tow carts, are generally designed to have both folding and unfolding modes to meet storage and transport needs. Current folding methods require some vehicles to unlock each frame individually before folding as a whole, making the folding operation inconvenient. Other vehicles have a linkage unlocking mechanism, but this requires unlocking one locking mechanism first, and then rotating that unlocked frame to unlock the others. This method is prone to failure due to incomplete rotation or improper force, resulting in lengthy folding times and potentially requiring repeated attempts to achieve the desired folding. Utility Model Content

[0003] The main purpose of this utility model is to propose a locking device and carrier. By improving the linkage unlocking method of the two locking mechanisms, the device can be fully unlocked before the user folds the device, thus making the folding process smoother.

[0004] To achieve the above objectives, this utility model proposes a locking device for locking a first connecting member, a second connecting member, and a third connecting member that are pivotally connected via a rotating shaft, comprising:

[0005] A first locking mechanism is disposed between the first connector and the second connector, for locking the relative positions of the first connector and the second connector.

[0006] A second locking mechanism is disposed between the second connector and the third connector to lock the relative positions of the second connector and the third connector.

[0007] The second unlocking mechanism is used to drive the second locking mechanism to unlock, and can drive the first locking mechanism to unlock synchronously during the unlocking process of the second locking mechanism.

[0008] After the second locking mechanism is unlocked, both the first and second connecting members rotate relative to the third connecting member.

[0009] In one embodiment, the first locking mechanism includes a first locking member, which moves along a first direction to unlock;

[0010] The second locking device includes a second locking member and a connecting member. One end of the connecting member engages with the second locking member, and the other end engages with the first locking member. When the second locking member is unlocked, the connecting member can drive the first locking member to move along a first direction, thereby achieving synchronous unlocking.

[0011] In one embodiment, when the second locking mechanism unlocks, the second locking member moves along the first direction and drives the connecting member to move along the first direction, thereby achieving synchronous unlocking.

[0012] In one embodiment, the connector includes a connecting portion, a first stop block disposed at one end of the connecting portion, and a second stop block disposed at the other end of the connecting portion, wherein the connecting portion is slidable relative to the rotating shaft;

[0013] Both the first locking member and the second locking member are arranged in a ring shape and are sleeved on the outside of the connecting part. The first stop and the second stop correspond to the sides of the first locking member and the second locking member that face away from each other.

[0014] In one embodiment, the connecting portion includes at least two elastic arms, one end of each elastic arm being fixed to the first stop, and the other end forming a second stop, the second stop being hook-shaped; and / or,

[0015] The locking device further includes a first elastic element disposed between the first locking member and the first connecting member, which causes the first locking member to reset; and / or,

[0016] The second unlocking mechanism includes a second unlocking member, which is located on the side of the second locking member facing away from the third connecting member. The movement of the second unlocking member can drive the second locking member to slide along a first direction.

[0017] In one embodiment, the locking device further includes a first unlocking mechanism for driving the first locking mechanism to unlock. After the first locking mechanism is unlocked, the first connecting member and the second connecting member can rotate relative to each other.

[0018] The first locking mechanism includes a first locking member, and the first unlocking mechanism includes a first unlocking member. The first unlocking member is disposed on the side of the first locking member facing away from the second connecting member, and the movement of the first unlocking member can drive the first locking member to slide along a first direction.

[0019] This utility model also proposes a carrier having an unfolded state and a folded state, the carrier comprising:

[0020] The frame structure includes a first connecting member, a second connecting member, and a third connecting member that are pivotally connected via a pivot.

[0021] The aforementioned locking device;

[0022] After the second unlocking mechanism is unlocked, both the first and second connectors rotate relative to the third connector to change from the unfolded state to the folded state.

[0023] In one embodiment, the first connector, the second connector, and the third connector are pivotally connected to form a support assembly, the support assembly comprising two members;

[0024] Two locking devices are provided, and the two locking devices cooperate with the two bracket groups respectively.

[0025] In one embodiment, both locking devices include the first locking mechanism, the second locking mechanism, and the second unlocking mechanism; or,

[0026] Two of the first connectors in the two bracket assemblies are arranged along the second direction, and one of the locking devices further includes the first unlocking mechanism; or,

[0027] The two first connectors in the two bracket groups are arranged along a first direction, and the two locking devices each include a first locking mechanism, a second locking mechanism, a second unlocking mechanism, and a first unlocking mechanism.

[0028] In one embodiment, the vehicle includes a child trolley or a stroller.

[0029] In the technical solution of this utility model, the first connector, the second connector, and the third connector are arranged in the inward and outward directions. Through the cooperation of the second unlocking mechanism and the two locking mechanisms, the first locking mechanism can be driven to unlock simultaneously with the second locking mechanism. This allows the user to fully unlock the first connector, the second connector, and the third connector with only one unlocking action, which is convenient to operate. The first connector and the second connector rotate relative to the third connector without encountering any resistance during the rotation of the first connector and the second connector, thus improving the user experience. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0031] Figure 1A structural schematic diagram of the first embodiment (deployed position) of the vehicle provided by this utility model;

[0032] Figure 2 for Figure 1 3D exploded view of the vehicle;

[0033] Figure 3 for Figure 1 A schematic diagram of the locking device.

[0034] Figure 4 for Figure 1 A structural schematic diagram of the medium-sized vehicle (in its deployed state);

[0035] Figure 5 for Figure 4 A schematic diagram of the structure of part A (the locked state of the first unlocking mechanism and the second unlocking mechanism);

[0036] Figure 6 for Figure 1 A structural schematic diagram of the medium-sized vehicle (in a partially folded state);

[0037] Figure 7 for Figure 6 A schematic diagram of the unlocked state of the first unlocking mechanism;

[0038] Figure 8 for Figure 1 A structural diagram of the medium-sized vehicle (fully folded state);

[0039] Figure 9 for Figure 8 A schematic diagram of the structure in which the first and second unlocking mechanisms cooperate to unlock;

[0040] Figure 10 A structural schematic diagram of the second embodiment (deployed position) of the vehicle provided by this utility model;

[0041] Figure 11 for Figure 10 A magnified view of a portion of the middle edge BB (the second unlocking mechanism in the locked state);

[0042] Figure 12 for Figure 10 A magnified view of the middle edge BB (the second unlocking mechanism in the unlocked state).

[0043] Explanation of icon numbers:

[0044] 100. Vehicle; 1. Frame structure; 11. First connecting member; 111. First front bulkhead; 112. Second front bulkhead; 12. Second connecting member; 121. First rear bulkhead; 122. Second rear bulkhead; 13. Third connecting member; 131. Wheel bracket; 132. Push handle bracket; 2. Locking device; 21. First locking mechanism; 211. First locking element; 22. Second locking mechanism; 221. Second locking element; 222. Connecting member; 2221. First stop block; 2222. Elastic arm; 3. First unlocking mechanism; 31. First unlocking element; 32. First driving element; 4. Second unlocking mechanism; 41. Second unlocking element; 42. Second driving element.

[0045] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0048] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0049] Common passenger vehicles, such as strollers, child seats, and child trolleys, are generally designed to have both folding and unfolding modes to meet storage and transportation needs.

[0050] The current folding methods are usually set to the following two:

[0051] In one method, the vehicle needs to unlock each frame separately before folding it as a whole, which makes the folding operation inconvenient.

[0052] In another approach, the vehicle is equipped with a linkage unlocking mechanism, eliminating the need to unlock each frame individually. However, the actual operation usually requires unlocking one of the locking mechanisms first, and then rotating the frame unlocked by that mechanism to achieve linkage unlocking of other components. This approach is prone to failure due to incomplete rotation or improper rotation force, which may require repeated attempts to achieve the final folding purpose, resulting in long folding time and a poor user experience.

[0053] Based on this, in order to improve the folding position of the seat, the structure of the two locking mechanisms for linkage unlocking was improved, thereby changing the user's unlocking and folding operation method, so that the seat can be fully unlocked before the user folds, thus making the folding process smoother.

[0054] To better understand the embodiments of this application, the carrier provided according to the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0055] Please refer to Figures 1 to 2 The vehicle 100 has an unfolded state and a folded state. The vehicle includes a first connector 11, a second connector 12, and a third connector 13 pivotally connected by a pivot. The three are engaged by a locking device 2 to achieve mutual locking and rotational engagement. The locking device 2 includes a first locking mechanism 21, a second locking mechanism 22, and a second unlocking mechanism 4. The first locking mechanism 21 is disposed between the first connector 11 and the second connector 12 to lock the relative positions of the first connector 11 and the second connector 12. The second locking mechanism 22 is disposed between the second connector 12 and the third connector 13 to lock the relative positions of the second connector 12 and the third connector 13. The second unlocking mechanism 4 is used to drive the second locking mechanism 22 to unlock, and can drive the first locking mechanism 21 to unlock synchronously during the unlocking process of the second locking mechanism 22. After the second locking mechanism 22 is unlocked, the first connector 11 and the second connector 12 both rotate relative to the third connector 13, so that the vehicle 100 can be converted from the unfolded state to the folded state.

[0056] In the technical solution of this utility model, the first connecting member 11, the second connecting member 12, and the third connecting member 13 are arranged in the inward and outward directions. Through the cooperation of the second unlocking mechanism 4 and the two locking mechanisms, the first locking mechanism 21 can be driven to unlock simultaneously with the unlocking of the second locking mechanism 22. This allows the user to fully unlock the first connecting member 11, the second connecting member 12, and the third connecting member 13 with only one unlocking action, which is convenient to operate. The first connecting member 11 and the second connecting member 12 rotate relative to the third connecting member 13. There is no resistance when the first connecting member 11 and the second connecting member 12 rotate, which improves the user experience.

[0057] It should be noted that a limiting structure can be provided on the front side of the frame structure 1 to limit the maximum rotational travel of the first connecting member 11 when the first locking mechanism 21 is in the unlocked state. The structural composition of the limiting structure is not limited in this utility model.

[0058] In this invention, the first direction and the second direction are two intersecting directions. In this embodiment, the first direction corresponds to the left-right direction, and the second direction corresponds to the up-down direction.

[0059] This utility model does not limit the structural form of the first locking mechanism 21. In some embodiments, the first locking mechanism 21 includes a first locking member 211. The first locking member 211 moves along a first direction to unlock, that is, it is slidably disposed between the first connecting member 11 and the second connecting member 12 along the axis of the rotating shaft. When the first locking mechanism 21 is locked, both the first connecting member 11 and the second connecting member 12 cooperate with the first locking member 211. After the first locking mechanism 21 is unlocked, one of the first connecting member 11 and the second connecting member 12 cooperates with the first locking member 211, and the other disengages from the first locking member 211. During the movement of the first locking member 211 in the first direction, the peripheral side of the first locking member 211 can simultaneously abut against the first connecting member 11 and the second connecting member 12. By adding a concave-convex structure or a wedge structure, the abutting and fitting effect is ensured, thereby ensuring the relative position of the first locking member 211, the first connecting member 11 and the second connecting member 12, and achieving the locking effect. When the first locking mechanism 21 is unlocked, the first locking member 211 is driven to move towards the second connecting member 12, thereby separating from the first connecting member 11. At this time, the first connecting member 11 is not restrained and can therefore rotate along the axis of the rotating shaft.

[0060] The shape of the first locking member 211 is not limited; it can be a regular or irregular shape, or a ring or a sheet.

[0061] To facilitate concealment, corresponding groove-shaped structures should be provided on the sides of the first connector 11 and the second connector 12 facing each other, thereby providing space for the installation of the first locking mechanism 21.

[0062] In some embodiments, the first locking member 211 is provided with a first locking tooth, the first connecting member 1111 is provided with a first tooth groove that engages with the first locking tooth, and the second connecting member 1112 is provided with a second tooth groove that engages with the first locking tooth. When the first locking mechanism 21 is in the locked state, the first locking tooth on the first locking member 211 engages with the first tooth groove and the second tooth groove, respectively. When the first locking mechanism 21 is in the unlocked state, the first locking tooth on the first locking member 211 engages with the first tooth groove and disengages from the second tooth groove.

[0063] The locking device should also include a first elastic element (not shown in the figure), which is disposed between the first locking member 211 and the first connecting member 11 to reset the first locking member 211. Based on the above embodiment, the elastic force of the first elastic element is used to drive the first locking member 211 to slide in the direction that makes the first locking tooth engage with the second tooth groove, that is, the elastic force of the first elastic element resets the first locking mechanism 21 from the unlocked state to the locked state. One end of the first elastic element is disposed on the first locking member 211, and the other end of the first elastic element is disposed on the first connecting member 11.

[0064] To facilitate concealment, corresponding groove-shaped structures should be provided on the sides of the second connector 12 and the third connector 13 facing each other, thereby providing space for the installation of the second locking mechanism 22.

[0065] The second locking mechanism 22 not only needs to lock the second connector 12 and the third connector 13, but also needs to drive the first locking member 211 to move synchronously. In this embodiment, the second locking mechanism 22 includes a second locking member 221 and a connector 222. The second locking member 221 is slidably disposed between the second connector 12 and the third connector 13 along the first direction. One end of the connector 222 cooperates with the second locking member 221, and the other end cooperates with the first locking member 211. When the second locking member 221 is unlocked, the connector 222 can drive the first locking member 211 to move along the first direction to achieve synchronous unlocking.

[0066] Specifically, when the second locking mechanism 22 unlocks, the second locking member 221 moves along the first direction, and drives the connecting member 222 to move along the first direction, achieving synchronous unlocking. That is, the second locking member 221 can move synchronously with the connecting member.

[0067] Specifically, the extension direction of the connector 222 is consistent with that of the rotating shaft, that is, it is set along the first direction. The connector 222 can be used directly as the rotating shaft, or it can be sleeved on the outside of the rotating shaft. This utility model does not limit this.

[0068] Based on the above embodiments, please refer to Figure 5When the second locking mechanism 22 is locked, both the second connecting member 12 and the third connecting member 13 cooperate with the second locking member 221, and the connecting member 222 can move relative to the second locking member 221 under the action of the first locking member 211; please refer to Figures 6 to 7 When the first locking mechanism 21 unlocks, the position of the second locking member 221 remains unchanged, still holding fixed against the second connecting member 12 and the third connecting member 13. Therefore, the connecting member 222 is restricted by the second locking member 221. In one embodiment, the first locking member 211 can drive the connecting member 222 to move synchronously until it is completely separated from the first connecting member 11. At this time, the end of the connecting member 222 can protrude from the second locking member 221. In another embodiment, the first locking member 211 can move relative to the connecting member 222 until it is completely separated from the first connecting member 11. During this process, the connecting member 222 and the second locking member 221 remain fixed. It should be understood that the cooperation relationship among the three in the first folded position varies depending on the different cooperation and limiting forms of the connecting member 222 with the first locking member 211 and the second locking member 221. Please refer to... Figures 8 to 9 After the second locking mechanism 22 is unlocked, the third connecting member 13 cooperates with the second locking member 221. The connecting member 222 and the first locking member 211 are both fixed relative to the second locking member 221. When the first connecting member 11, the second connecting member 12 and the third connecting member 13 are arranged sequentially from the inside to the outside, when the second locking member 221 is driven to move in the direction away from the first connecting member 11, it can drive the connecting member 222 and the first locking member 211 to move synchronously. When the second locking member 221 abuts against the third connecting member 13, the first locking member 211 abuts against the second connecting member 12. At this time, the second connecting member 12 and the second locking member 221 do not contact each other, and the first connecting member 11 and the first locking member 211 do not contact each other, thus achieving a fully unlocked state. The first connecting member 11, the second connecting member 12 and the third connecting member 13 can rotate separately. When the second connector 12, the first connector 11, and the third connector 13 are arranged sequentially from the inside to the outside, when the second locking member 221 is driven to move in the direction away from the second connector 12, it can drive the connector 222 and the first locking member 211 to move synchronously. When the second locking member 221 abuts against the third connector 13, the first locking member 211 abuts against the first connector 11. At this time, the first connector 11 and the second locking member 221 do not contact each other, and the second connector 12 and the first locking member 211 do not contact each other, thus achieving a fully unlocked state. The first connector 11, the second connector 12, and the third connector 13 can rotate separately.

[0069] In some embodiments, the second locking member 221 is provided with a second locking tooth, the second connecting member 12 is also provided with a third tooth groove that cooperates with the second locking tooth, and the third connecting member 13 is provided with a fourth tooth groove that cooperates with the second locking tooth. When the second locking mechanism 22 is in the locked state, the second locking tooth on the second locking member 221 engages with the third tooth groove and the fourth tooth groove respectively. When the second locking mechanism 22 is in the unlocked state, the second locking tooth on the second locking member 221 engages with the fourth tooth groove and disengages from the engagement with the third tooth groove.

[0070] The second locking mechanism 22 may further include a second elastic element (not shown in the figure). The elastic force of the second elastic element is used to drive the second locking member 221 to slide in the direction that makes the second locking tooth engage with the third tooth groove, that is, the elastic force of the second elastic element resets the second locking mechanism 22 from the unlocked state to the locked state. One end of the second elastic element is disposed on the second locking member 221, and the other end of the second elastic element is disposed on the second connecting member 12.

[0071] In this embodiment, please refer to Figure 3 The connector 222 includes a connecting portion, a first stop 2221 disposed at one end of the connecting portion, and a second stop at the other end of the connecting portion. The connecting portion is slidable relative to the pivot. The first locking member 211 and the second locking member 221 are both arranged in a ring and are both sleeved on the outside of the connecting portion. The first stop 2221 and the second stop are used to correspond to the sides of the first locking member 211 and the second locking member 221 facing away from each other, respectively. Based on the limitation of the first stop 2221 and the second stop, when the second stop abuts against the side wall corresponding to the third connector 13, the connector 222 cannot continue to move toward the third connector 13. Similarly, when the first stop 2221 abuts against the side wall of the first connector 11, the connector 222 cannot move toward the first connector 11. Therefore, based on the limiting relationship, different cooperation relationships can be achieved when the corresponding locking members move in different directions.

[0072] Furthermore, the connecting part includes at least two elastic arms 2222. One end of each elastic arm 2222 is fixed to the first stop 2221, and the other end forms a second stop. The second stop is hook-shaped. At this time, the first locking member 211 and the second locking member 221 are both sleeved on the outside of the elastic arm 2222. Relying on the elastic properties of the elastic arm 2222, deformation fastening can be achieved.

[0073] The second unlocking mechanism 4 includes a second unlocking member 41, which is located on the side of the second locking member 221 facing away from the third connecting member 13. The movement of the second unlocking member 41 can drive the second locking member 221 to slide along a first direction. The second unlocking member 41 and the second locking member 221 can be engaged by an inclined plane, so that when the second unlocking member 41 is driven to rotate, the inclined plane converts the rotational drive of the second unlocking member 41 into a linear drive of the second locking member 221, thereby causing the second locking member 221 to move along the axis of rotation. The second unlocking member 41 and the second locking member 221 can also be engaged by teeth, so that the rotation of the second unlocking member 41 can drive the second locking member 221 to rotate while simultaneously moving linearly, thereby achieving a driving effect. This rotational engagement structure allows for a more compact spatial layout, making it suitable for narrow spaces.

[0074] The second unlocking mechanism 4 also includes a second driving component 42, which can be configured as an unlocking pinch or an unlocking handle. The user can unlock the device by pressing or prying it open. A traction cable or other transmission structure can be configured to drive and connect the second driving component 42 and the second unlocking component 41, such as a beveled fit or a concave-convex structure.

[0075] Furthermore, the locking device 100 also includes a first unlocking mechanism 3 for driving the first locking mechanism 21 to unlock. After the first locking mechanism 21 is unlocked, the first connecting member 11 and the second connecting member 12 can rotate relative to each other. The first locking mechanism 21 includes a first locking member 211, and the first unlocking mechanism 3 includes a first unlocking member 31. The first unlocking member 31 is located on the side of the first locking member 211 facing away from the second connecting member 12. The movement of the first unlocking member 31 can drive the first locking member 211 to slide along a first direction. By setting the first unlocking mechanism 3 to unlock the first locking mechanism 21 separately, one of the second connecting member 12 and the first connecting member 11 can be unlocked on one side, thereby facilitating children's getting in and out of the vehicle. This allows the vehicle 100 to have two usage states: fully unfolded and partially folded, enhancing the versatility of the vehicle 100's use.

[0076] During the use of the vehicle 100, the first connector 11 has two positions: one position is locked to the second connector 12 and the third connector 13, and the other position is able to rotate independently relative to the second connector 12 and the third connector 13.

[0077] It should be noted that, depending on the different structural forms of the vehicle 100, the positional relationship between the first connecting member 11 and the second connecting member 12 in the deployed state of the vehicle 100 varies. Please refer to [reference needed]. Figure 1When the vehicle 100 is a tow truck, in the unfolded state, the first connecting member 11 and the second connecting member 12 are flush. When the first connecting member 11 is unlocked, it can form an angle with the second connecting member 12, thus creating an entrance / exit for children to get in and out from the side. Please refer to... Figure 10 When the vehicle 100 is a trolley, in the unfolded state, there is an angle between the first connector 11 and the second connector 12.

[0078] Specifically, the first unlocking member 31 and the first locking member 211 can be engaged by inclined surfaces, so that when the first unlocking member 31 is driven to rotate, the inclined surfaces convert the rotational drive into a linear drive, thereby causing the first locking member 211 to move along the first direction. The first unlocking member 31 and the first locking member 211 can also be engaged by teeth, so that the rotation of the first unlocking member 31 can drive the first locking member 211 to rotate while simultaneously moving linearly, thereby achieving the driving effect. This rotational engagement structure allows for a more compact spatial layout, making it suitable for narrow spaces.

[0079] It should be understood that the first unlocking component 31 only needs to be able to cooperate with the first locking component 211, so the cooperation relationship between the first unlocking component 31 and the first connecting component 11 and the second connecting component 12 is not limited.

[0080] The first unlocking mechanism 3 also includes a first driving component 32, which can be configured as an unlocking pinch or an unlocking handle. The user can unlock the device by pressing or prying it open. A traction cable or other transmission structure can be configured to drive the connection between the first driving component 32 and the first unlocking component 31, such as a beveled fit or a concave-convex structure.

[0081] Based on the above embodiments, please refer to Figure 3 and Figure 5From the inside out, a first unlocking member 31, a first locking member 211, a second unlocking member 41, and a second locking member 221 are respectively provided. The first locking member 211 and the first unlocking member 31 are located in a first cavity defined by a first connecting member 11 and a second connecting member 12, and the second locking member 221 and the second unlocking member 41 are located in a second cavity defined by a second connecting member 12 and a third connecting member 13. A connecting member 222 passes through the two cavities, and a first stop 2221 is located between the first locking member 211 and the first unlocking member 31. In the locked state, the first unlocking member 31 abuts against the side wall of the first cavity in the axial direction of the rotating shaft, and the peripheral side wall of the first locking member 211 abuts against both the first connecting member 11 and the second connecting member 12. However, there is a gap between the first locking member 211 and the other side wall of the first cavity in the axial direction of the rotating shaft. The second unlocking member 41 abuts against the side wall of the second chamber near the first chamber, and the peripheral side wall of the second locking member 221 abuts against the third connecting member 13 and the second connecting member 12 simultaneously, but there is a gap between the second locking member 221 and the side wall of the second chamber facing away from the first chamber. At this time, the second stop of the connecting member 222 abuts against the side of the second locking member 221.

[0082] The first unlocking component 31 is activated, causing the first locking component 211 and the connecting component 222 to move together toward the second chamber. Please refer to... Figures 6 to 7 In the partially folded state, the first unlocking member 31 is spaced apart from the side wall of the first chamber, the peripheral side wall of the first locking member 211 abuts against the second connecting member 12, and the first locking member 211 abuts against the other side wall of the first chamber in the axial direction of the rotating shaft. The positions of the second locking member 221 and the second unlocking member 41 remain unchanged, and the second stop is located in the gap between the second locking member 221 and the corresponding side wall of the second chamber.

[0083] The second unlocking component 41 is activated, causing the second locking component 221, the connecting component 222, and the first locking component 211 to move together in a direction away from the first chamber. Please refer to... Figures 8 to 9 In the fully folded state, the position of the first unlocking member 31 remains unchanged, abutting against the side wall of the first chamber in the axial direction of the pivot axis. The second locking member 221 abuts against the corresponding side wall of the second chamber, and the peripheral side wall of the second locking member 221 abuts against the third connecting member 13. The first locking member 211 abuts against the corresponding side wall of the first chamber. At this time, the first locking member 211 abuts against the second connecting member 12, and the first locking member 211 is separated from the first unlocking member 31. The first locking member 211 can be reset to the engagement state with the first unlocking member 31 by setting an elastic structure. It should be understood that, based on the engagement state of the connecting member 222, the first locking member 211, and the second locking member 221, only one elastic structure can be set for the first locking member 211 to reset, so that the second locking mechanism 22 can be reset synchronously at the same time as the first locking member 211 resets.

[0084] The first connector 11, the second connector 12, and the third connector 13 are part of the frame structure 1 of the vehicle 100. For example, the first connector 11, the second connector 12, and the third connector 13 can be the front frame, the rear frame, and the bracket assembly, respectively. Accordingly, the first locking mechanism 21 is used to lock the relative positions of the front frame and the rear frame, and the second locking mechanism 22 is used to lock the relative positions of the rear frame and the bracket assembly. The first unlocking mechanism 3 is used to drive the first locking mechanism 21 to unlock, and the second unlocking mechanism 4 is used to drive the second locking mechanism 22 to unlock, and can drive the first locking mechanism 21 to unlock synchronously during the unlocking of the second locking mechanism 22. After the first locking mechanism 21 is unlocked, one of the rear frame and the front frame can rotate relative to the bracket assembly. After the second locking mechanism 22 is unlocked, both the front frame and the rear frame rotate relative to the bracket assembly 13.

[0085] Specifically, the vehicle 100 has an unfolded state, a partially folded state, and a fully folded state;

[0086] When unfolded, both the first locking mechanism 21 and the second locking mechanism 22 are locked, and the front frame, rear frame and support assembly are fixed in the preset extension direction, allowing children to ride in them.

[0087] In the partially folded state, the first unlocking mechanism drives the first locking mechanism 21 to unlock. At this time, the rear frame and the front frame can rotate relative to each other, allowing one of them to rotate relative to the support assembly, thereby changing the relative angle and fully exposing the seat portion of the vehicle 100. This state facilitates children getting in and out of the vehicle and reduces obstruction during their entry and exit. It should be understood that the unlocking action of the first locking mechanism 21 does not affect the locking state of the second locking mechanism 22.

[0088] In the fully folded state, relying on the linkage unlocking effect of the second locking mechanism 22 and the first locking mechanism 21, the user only needs to drive the second unlocking mechanism 4 to work. At this time, both the rear frame and the front frame can rotate freely relative to the bracket assembly, so that they can be rotated and folded as needed.

[0089] To improve the support performance of the frame structure 1, the first connector 11, the second connector 12, and the third connector 12 are pivotally connected to form a bracket assembly. Two bracket assemblies are included, and two locking devices 2 are provided, each cooperating with one of the two bracket assemblies. The two bracket assemblies correspond to the upper and lower structures of the frame structure 1. This arrangement allows both the upper and lower structures to be unlocked via a linkage unlocking mechanism, making the unlocking and folding of the entire frame structure 1 more convenient.

[0090] Furthermore, the upper structure support assembly includes a first front support rod 111, a first rear support rod 121, and a wheel bracket 131, while the lower structure support assembly includes a second front support rod 112, a second rear support rod 122, and a push handle bracket 132. The ends of the first front support rod 111 and the first rear support rod 121 close to each other are rotatably connected to the wheel bracket 131, and the ends of the second front support rod 112 and the second rear support rod 122 close to each other are rotatably connected to the push handle bracket 132. In the unfolded state, the second front support rod 112 and the second rear support rod 122 can work together as a bottom support, and the first front support rod 111 and the first rear support rod 121 can work together to form an upper support. When the structure is a tractor, a cover can be fitted onto the upper and lower structures, giving it a sturdy appearance.

[0091] In some embodiments, the two bracket groups are spaced apart along the second direction, and the two first connectors 11 and the two second connectors 12 are arranged in a corresponding manner. Accordingly, the two first connectors 11 are the first front rail 111 and the second front rail 112, the two second connectors 12 are the first rear rail 121 and the second rear rail 122, and the two third connectors 13 are the wheel bracket 131 and the push handle bracket 132.

[0092] Based on the above embodiments, in one cooperation scenario, both locking devices 2 may each include a first locking mechanism 21, a second locking mechanism 22, and a second unlocking mechanism 4, that is, both bracket groups can achieve linkage unlocking when the second unlocking mechanism 4 is unlocked. In another configuration, considering the different functions of the upper and lower structures, the upper structure corresponds to the child's hands and upper body, while the lower structure only needs to meet the requirements of unfolding support and folding storage. Therefore, the locking device 2 corresponding to the upper structure includes a first locking mechanism 21, a second locking mechanism 22, a first unlocking mechanism 3, and a second unlocking mechanism 4, so that the first front rail 111 can be unlocked on one side. Specifically, in the unfolded state, the first front rail 111 and the first rear rail 121 are located above the second front rail 112 and the second rear rail 122. The first front rail 111, the first rear rail 121, and the wheel bracket 131 are connected by one of the locking devices 2 and unlocked by the first unlocking mechanism 3 and one of the second unlocking mechanisms 4. At this time, the first front rail 111 or the first rear rail 121 can be unlocked on one side by cooperating with the first unlocking mechanism 3 and the first locking mechanism 21, thereby reducing the obstruction of the upper structure for children getting in and out of the car. The locking device 2 corresponding to the lower structure includes a first locking mechanism 21, a second locking mechanism 22, and a second unlocking mechanism 4, so that in the corresponding bracket group, the first connecting member 11 and the second connecting member 12 both rotate relative to the third connecting member 13, or the relative positions of the first connecting member 11, the second connecting member 12, and the third connecting member 13 are locked. Based on the above embodiment, the second front rail 112, the second rear rail 122, and the push handle bracket 132 can be unlocked by the second unlocking mechanism 4, which links the first locking mechanism 21 and the second locking mechanism 22.

[0093] In another embodiment, the two first connecting members 11 in the two bracket assemblies are arranged along a first direction, and both locking devices 2 include a first locking mechanism 21, a second locking mechanism 22, a second unlocking mechanism 3, and a first unlocking mechanism 4. In this case, the two first connecting members 11 are respectively a first front rail 111 and a push handle bracket 132, the two second connecting members 12 are respectively a first rear rail 121 and a second rear rail 122, and the two third connecting members 13 are respectively a wheel bracket 131 and a second front rail 112. In this case, the first front rail 111 and the push handle bracket 132 can be unlocked unilaterally by the first unlocking mechanism 3.

[0094] In the first embodiment, the vehicle 100 includes a child trolley. During use, the child trolley is in the unfolded state as follows: Figure 4When children need to get on or off the vehicle, pressing the first drive member 32 of the first front bar 111 pulls the corresponding first unlocking member 31 through the traction cable, which in turn holds the corresponding first locking member 211, allowing the first front bar 111 to be unlocked independently. After unlocking, the first front bar 111 can rotate downwards independently, thereby forming an entrance / exit on the front side to facilitate children getting on and off the vehicle.

[0095] When folding for storage, pressing the second drive member 42 of the first rear rail 121 pulls the upper second unlocking member 41 via the traction cable, causing it to press against the corresponding second locking member 221. This causes the second locking member 221 to move synchronously with the connecting member 222 and the first locking member 211, achieving a linked unlocking state. At this time, both the first front rail 111 and the first rear rail 121 can rotate downwards, achieving upper-level unlocking. Then, pressing the second drive member 42 on the push handle bracket 132 pulls the lower second unlocking member 41 via the traction cable, causing it to press against the corresponding second locking member 221. This causes the lower first locking mechanism 21 and the second locking mechanism 22 to unlock synchronously. At this time, all rotating connected parts can move relative to each other, and the second front rail 112 and the second rear rail 122 can also rotate downwards, finally completing the folding. This allows for a more convenient unlocking operation when folding the entire frame.

[0096] In the first embodiment, please refer to Figure 4 Figure 6 Figure 8 The vehicle 100 has an unfolded state, a partially folded state, and a fully folded state. In the unfolded state, the first connecting member 11 and the second connecting member 12 extend in the same direction, both horizontally. The first locking mechanism 21 locks the relative positions of the first connecting member 11 and the second connecting member 12, and the second locking mechanism 22 locks the relative positions of the second connecting member 12 and the third connecting member 13. At this time, the first connecting member 11, the second connecting member 12, and the third connecting member 13 are arranged sequentially from the inside to the outside. In the partially folded state, the first unlocking mechanism 3 drives the first locking mechanism 21 to unlock. One of the second connecting member 12 and the first connecting member 11 is inclined and forms an angle with the other. At this time, the first connecting member 11 and the second connecting member 12 can be set at an obtuse angle, so that the vehicle 100 is unfolded at the front, and children can get on and off the vehicle from the open position at the front, which is more convenient. In the fully folded state, the second unlocking mechanism 4 drives the second locking mechanism 22 to unlock simultaneously with the first locking mechanism 21. The first connector 11 and the second connector 12 can rotate towards each other until they are in contact with the third connector 13. At this time, the first connector 11 and the second connector 12 are facing down and rotating towards each other, so that the first connector 11 and the second connector 12 can move closer to the third connector 13, thereby achieving the folding effect.

[0097] Please refer to Figures 10 to 12In the second embodiment, the vehicle 100 is set as a stroller with an unfolded state and a folded state. It can drive the first locking mechanism 21 to unlock simultaneously with the second locking mechanism 22, so that the user can fully unlock the first connector 11, the second connector 12 and the third connector 13 with only one unlocking action.

[0098] Compared to the first embodiment, the second embodiment does not require the design of a first unlocking mechanism 3 to achieve independent unlocking. Only a linkage unlocking related structure needs to be set. Specifically, the first connecting member 11 serves as the front wheel assembly, the second connecting member 12 serves as the push handle, and the third connecting member 13 serves as the rear wheel assembly. When set up, the second locking mechanism 22 can be unlocked by the second unlocking mechanism 4, thereby driving the first locking mechanism 21 to unlock synchronously.

[0099] Please refer to Figures 11 to 12 In the second embodiment, during the use of the stroller, the front wheel assembly and push handle define a first chamber for housing the first locking member 211, and the push plate and rear wheel assembly define a second chamber for housing the second locking member 221 and the second unlocking member 41. The second unlocking member 41 is located between the first locking member 211 and the second locking member 221, and the connecting member 222 passes through the first chamber and the second chamber.

[0100] When folding and storing, by pressing the second drive member 42 on the push handle, the second unlocking member 41 is pulled by the traction cable to push against the corresponding second locking member 221, so that the second locking member 221 drives the connecting member 222 and the first locking member 211 to move synchronously and achieve the linkage unlocking state. At this time, the front wheel assembly and the push handle can rotate and move closer to the rear wheel assembly to achieve the desired effect.

[0101] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A locking device for locking a first connecting member, a second connecting member, and a third connecting member that are pivotally connected via a rotating shaft, characterized in that, include: A first locking mechanism is disposed between the first connector and the second connector, for locking the relative positions of the first connector and the second connector. A second locking mechanism is disposed between the second connector and the third connector to lock the relative positions of the second connector and the third connector. The second unlocking mechanism is used to drive the second locking mechanism to unlock, and can drive the first locking mechanism to unlock synchronously during the unlocking process of the second locking mechanism. After the second locking mechanism is unlocked, both the first and second connecting members rotate relative to the third connecting member.

2. The locking device as claimed in claim 1, characterized in that, The first locking mechanism includes a first locking element, which moves in a first direction to unlock; The second locking mechanism includes a second locking member and a connecting member. One end of the connecting member engages with the second locking member, and the other end engages with the first locking member. When the second locking member is unlocked, it can drive the first locking member to move along a first direction through the connecting member, thereby achieving synchronous unlocking.

3. The locking device as described in claim 2, characterized in that, When the second locking mechanism is unlocked, the second locking member moves along the first direction and drives the connecting member to move along the first direction, thereby achieving synchronous unlocking.

4. The locking device as described in claim 3, characterized in that, The connector includes a connecting part, a first stop block disposed at one end of the connecting part, and a second stop block disposed at the other end of the connecting part. The connecting part is slidable relative to the rotating shaft. Both the first locking member and the second locking member are arranged in a ring shape and are sleeved on the outside of the connecting part. The first stop and the second stop correspond to the sides of the first locking member and the second locking member facing away from each other, respectively.

5. The locking device as described in claim 4, characterized in that, The connecting portion includes at least two elastic arms, one end of each elastic arm being fixed to the first stop, and the other end forming a second stop, the second stop being hook-shaped; and / or The locking device further includes a first elastic element, which is disposed between the first locking element and the first connecting element to reset the first locking element. And / or, The second unlocking mechanism includes a second unlocking member, which is located on the side of the second locking member facing away from the third connecting member. The movement of the second unlocking member can drive the second locking member to slide along a first direction.

6. The locking device as claimed in claim 1, characterized in that, The locking device further includes a first unlocking mechanism for driving the first locking mechanism to unlock. After the first locking mechanism is unlocked, the first connecting member and the second connecting member can rotate relative to each other. The first locking mechanism includes a first locking member, and the first unlocking mechanism includes a first unlocking member. The first unlocking member is disposed on the side of the first locking member facing away from the second connecting member, and the movement of the first unlocking member can drive the first locking member to slide along a first direction.

7. A vehicle, characterized in that, The vehicle has an unfolded state and a folded state, and the vehicle includes: The frame structure includes a first connecting member, a second connecting member, and a third connecting member that are pivotally connected via a pivot. The locking device as described in any one of claims 1 to 6; After the second unlocking mechanism is unlocked, both the first and second connectors rotate relative to the third connector, so that the vehicle can be converted from the unfolded state to the folded state.

8. The vehicle as claimed in claim 7, characterized in that, The first connector, the second connector, and the third connector are pivotally connected to form a support assembly, which includes two supports. Two locking devices are provided, and the two locking devices cooperate with the two bracket groups respectively.

9. The vehicle as claimed in claim 8, characterized in that, Both locking devices include the first locking mechanism, the second locking mechanism, and the second unlocking mechanism; or, Two of the first connectors in the two bracket assemblies are arranged along the second direction, and one of the locking devices further includes the first unlocking mechanism; or, The two first connectors in the two bracket groups are arranged along a first direction, and the two locking devices each include a first locking mechanism, a second locking mechanism, a second unlocking mechanism, and a first unlocking mechanism.

10. The vehicle as claimed in claim 7, characterized in that, The vehicle includes a child trolley or a child stroller.

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