Automatic unlocking mechanism of baby carriage handrail and baby carriage frame

Abstract

The utility model relates to an automatic unlocking mechanism of a baby carriage armrest and a baby carriage frame, and the automatic unlocking mechanism of the baby carriage armrest comprises a central base of the frame, a frame handle, an armrest seat, a connecting piece and a seat armrest, and is characterized in that a first rotating piece is arranged on the armrest seat; a second rotating piece is arranged at the end part of the seat armrest, and a locking piece capable of clamping the first rotating piece and the second rotating piece to form a limit is arranged between the first rotating piece and the second rotating piece; the unlocking button is used for driving the locking piece to move so as to unlock, and the elastic piece is used for enabling the locking piece to return to the original position; a triggering piece capable of applying pressure to the unlocking button is arranged on the central base or the frame handle or the connecting piece; when the bicycle is folded, in the process that the handrail base rotates along with the bicycle frame handle, the triggering piece can make contact with the unlocking button and exert pressure on the unlocking button so that unlocking can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of strollers, specifically relating to an automatic unlocking mechanism for stroller armrests and a stroller frame. Background Technology

[0002] Strollers are utility vehicles that provide convenience for infants' outings or outdoor activities. To meet the needs of easy carrying and transportation, foldable strollers are a basic feature. Beyond this, users are increasingly focusing on the folding method and the speed and convenience of the folding operation, as well as the space occupied by the stroller after folding. Factors affecting the space occupied after folding include the structural dimensions of various components such as the seat, armrests, backrest, and handles, and the degree of their folding. Folding the seat armrests during folding is not a common practice; most strollers involve directly removing the seat armrests or manually unlocking and folding them. Summary of the Invention

[0003] This invention addresses the folding problem of existing stroller seat armrests by proposing an automatic unlocking mechanism. Other structural components on the frame press the unlock button, causing the locking mechanism to move and disengage from the locking groove, thus releasing the lock between the first and second rotating components and unlocking the stroller. After unlocking, the second rotating component can rotate flexibly relative to the first rotating component, allowing the seat armrest to fold downwards under gravity or driven by a torsional force component, offering flexibility and convenience. This automatic unlocking mechanism is integrated with the stroller's folding mechanism. When folding the stroller, the armrest seat and trigger mechanism move synchronously due to the flipping action of the frame handle, causing the trigger mechanism to press the unlock button in the seat armrest unlocking mechanism, achieving a linked unlocking operation. Folding the stroller eliminates the need for separate folding of the seat armrest, saving time and effort and simplifying the folding process, making it extremely convenient.

[0004] The purpose of this invention is achieved through the following technical solution: an automatic unlocking mechanism for a stroller armrest, comprising a central base of the stroller frame, a frame handle rotatably hinged above the central base, an armrest seat rotatably hinged to the central base, a connecting member movably connected between the central base and the armrest seat, and a seat armrest connected to the armrest seat, characterized in that a first rotating member is provided on the armrest seat, and a second rotating member is provided at the end of the seat armrest, the first rotating member and the second rotating member being connected to each other and capable of relative rotation.

[0005] A locking member is provided between the first rotating member and the second rotating member to engage them and form a limit position; an unlocking button is also provided for driving the locking member to move and thus unlocking, and an elastic member is provided for returning the locking member to its original position.

[0006] A trigger element capable of applying pressure to the unlock button is provided on the central base, the frame handlebar, or the connecting component; when the bike is put away, as the handlebar seat rotates with the frame handlebar, the trigger element can contact the unlock button and apply pressure to it to unlock it.

[0007] First, by rotating the armrest, frame handlebars, and center base relative to each other, their relative positions are changed. Then, the trigger on the center base or frame handlebars gradually moves closer to the end of the seat armrest until the trigger contacts and applies pressure to the unlock button on the outer side of the end of the seat armrest, thus unlocking the vehicle. The above unlocking method is achieved in one step by synchronously flipping the linkage structure during the folding process, without the need for additional manual pressing to unlock, making it very flexible and quick.

[0008] Preferably, the trigger is located on the upper part of the connecting member. This trigger can contact the unlock button and apply pressure. When the bike is being retracted, as the armrest rotates with the frame and handlebars, the trigger can contact the unlock button and apply pressure to it, thus unlocking the bike. Specifically, a small protrusion or a small outwardly flared slope can be added to the upper part of the connecting member, making the connecting member also the trigger. This design combines the connecting member and the trigger into one, simplifying the structure while simultaneously serving as both a transmission mechanism and a button-pressing mechanism. In the first half of the retraction process, the connecting member acts as a transmission mechanism, causing the armrest to rotate. In the second half of the retraction process, the connecting member also functions as a trigger, applying pressure to the unlock button by pressing the upper part of the connecting member to complete the unlocking process.

[0009] Preferably, the trigger is located on the inner side of the central base, and the trigger can abut against the unlock button and apply pressure to unlock it. Alternatively, a partial protrusion can be provided on the inner side of the central base, which contacts the unlock button and applies pressure to unlock it. Another option is to directly utilize a joint portion of a protrusion on the central base itself to contact the unlock button and apply pressure to unlock it.

[0010] Preferably, the trigger is located on the lower inner side of the handlebar frame, or the trigger is located on the lower edge of the handlebar frame and extends towards the armrest seat. The trigger can contact the unlock button and apply pressure to unlock it. Alternatively, a partial protrusion can be provided on the inner side of the handlebar frame, which contacts the unlock button and applies pressure to unlock it. Another option is to have a significantly longer extension on the lower edge of the handlebar frame to contact the unlock button and apply pressure to unlock it.

[0011] Preferably, the first rotating member has a first locking groove, and the second rotating member has a second locking groove, and the first locking groove and the second locking groove can overlap and align; the locking member can be simultaneously embedded in the aligned first locking groove and the second locking groove.

[0012] Preferably, the elastic element is disposed between the second rotating element and the locking element; the unlocking button is disposed on the first rotating element and extends into the inner end of the first rotating element, abutting or connecting with the locking element, while the pressing end of the unlocking button is exposed outside the first rotating element; the locking element can disengage from the first locking groove under the drive of the unlocking button, thereby unlocking; after unlocking, the first rotating element and the second rotating element can rotate freely relative to each other.

[0013] When locked, the locking member is simultaneously embedded in the first and second locking slots; when unlocked, the unlocking button is pressed, which pushes the locking member toward the second locking slot until the locking member is completely disengaged from the first locking slot and fully embedded in the second locking slot, at which point the second rotating member can be freely rotated.

[0014] Preferably, a torsional force component is provided between the first and second rotating components to drive the second rotating component to flip from an unfolded state to a folded state. This torsional force component can be a torsion spring. After unlocking, the second rotating component can flip freely, and under the drive of the torsional force component, the second rotating component can quickly flip to the folded state.

[0015] Preferably, the hinged portion of the first rotating member and the second rotating member is configured as a cylindrical annulus with an internal mounting cavity, and the periphery of the mounting cavity is provided with at least two recessed first locking grooves; the hinged portion of the second rotating member and the first rotating member is configured as a cylindrical annulus with an internal mounting cavity, and the periphery of the mounting cavity is provided with at least two recessed second locking grooves; a locking member is provided in the mounting cavity formed by the overlapping and splicing of the hinged portions of the first rotating member and the second rotating member, the main body of the locking member is configured as a cylinder that matches the mounting cavity, and the periphery of the main body has an outwardly extending extension that matches the first locking groove and the second locking groove.

[0016] This utility model also provides a stroller frame, including the aforementioned automatic unlocking mechanism for the stroller armrest, as well as a front frame leg located at the front of the frame, a rear frame leg located at the rear of the frame, and a seat located in the middle of the frame.

[0017] Preferably, the front leg of the frame is rotatably hinged to the front side of the central base, and the rear leg of the frame is fixedly connected to the rear side of the central base; a transmission linkage assembly for achieving linkage folding is provided between the handlebars and the front leg of the frame; wheels are connected to the bottom of the front leg and the rear leg of the frame.

[0018] When folding the bike, the handlebars flip, causing the armrest seat and trigger to move synchronously. This trigger presses the unlock button in the seat armrest unlocking mechanism, enabling a linked unlocking operation. When folding the bike, there is no need to fold the seat armrest separately. At the same time, the seat, front frame legs, and other structures also flip and fold synchronously under the transmission linkage assembly, ultimately achieving rapid folding of the entire bike.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The automatic unlocking mechanism of this utility model uses other structural components on the vehicle frame to press the unlocking button, which drives the locking component to move and disengage from the locking groove, thereby releasing the locking effect between the first rotating component and the second rotating component and realizing unlocking; after unlocking, the second rotating component can rotate flexibly relative to the first rotating component, so the seat armrest can be flipped downwards and folded under the action of gravity or driven by the torsional force component, which is flexible and convenient.

[0021] This utility model combines an automatic unlocking mechanism with a folding structure. When folding the vehicle, the armrest seat and the trigger move synchronously under the action of the frame handlebars, causing the trigger to press the unlocking button in the unlocking mechanism of the seat armrest, thus realizing the linkage unlocking operation. When folding the vehicle, there is no need to fold the seat armrest separately, simplifying the folding steps and achieving one-step, linkage folding of the entire vehicle. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the automatic unlocking mechanism of the stroller armrest of this utility model;

[0023] Figure 2 This is a partial exploded view of the armrest seat and seat armrest of this utility model;

[0024] Figure 3 This is a schematic diagram of the automatic unlocking mechanism of the stroller of this utility model triggered after it begins to fold (at this time, the seat armrests are in the unfolded state, and the seat armrests are not shown in the figure).

[0025] Figure 4 This is a schematic diagram of the automatic unlocking mechanism of the stroller after folding in the unlocked state (at this time, the seat armrest is in the folded state, and the seat armrest is not shown in the figure).

[0026] Figure 5 This is a partial exploded view of the armrest seat and seat armrest of this utility model (with an added torsional force component).

[0027] Figure 6 This is a schematic diagram of the stroller frame of this utility model;

[0028] Figure 7This is a schematic diagram of the stroller frame of this utility model in a folded state.

[0029] The markings in the diagram are: 1. First rotating component; 11. First locking groove; 2. Second rotating component; 22. Second locking groove; 3. Locking component; 4. Unlocking button; 5. Elastic component; 6. Trigger component; 7. Connecting component; 8. Frame handlebar; 9. Torque component; 10. Handrail base; 13. Front frame foot; 14. Rear frame foot; 15. Drive linkage assembly; 16. Wheel; 80. Center base. Detailed Implementation

[0030] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0031] Example 1:

[0032] like Figure 1 , 2 As shown in Figures 3 and 4, an automatic unlocking mechanism for a stroller armrest mainly consists of a central base 80 of the stroller frame, a frame handle 8 rotatably hinged above the central base 80, an armrest seat 10 rotatably hinged to the central base 80, a connecting member 7 movably connected between the central base 80 and the armrest seat 10, and a seat armrest 12 connected to the armrest seat 10.

[0033] The upper end of the armrest seat 10 is provided as a first rotating member 1, and the two ends of the seat armrest 12 are respectively fixedly connected to the second rotating member 2. The first rotating member 1 and the second rotating member 2 are connected to each other and can rotate relative to each other. A locking member 3 is installed between the first rotating member 1 and the second rotating member 2 to lock the two together to form a limit. It also has an unlocking button 4 for driving the locking member 3 to move to unlock, and an elastic member 5 for returning the locking member 3 to its original position.

[0034] Specifically, the hinged portion of the first rotating member 1 and the second rotating member 2 is configured as a cylindrical annulus, which has an internal mounting cavity, and the periphery of the mounting cavity has two symmetrically arranged recessed first locking grooves 11; the hinged portion of the second rotating member 2 and the first rotating member 1 is configured as a cylindrical annulus, which has an internal mounting cavity, and the periphery of the mounting cavity has two symmetrically arranged recessed second locking grooves 22; a locking member 3 is installed in the mounting cavity formed by the overlapping and splicing of the hinged portions of the first rotating member 1 and the second rotating member 2. The main body of the locking member 3 is a cylinder with a shape matching the mounting cavity. At the same time, the periphery of the main body of the locking member 3 has an outwardly extending extension that matches the shape of the first locking groove 11 and the second locking groove 12; that is, after the first locking groove 11 and the second locking groove 22 overlap and align, the locking member 3 can be simultaneously embedded in the aligned first locking groove 11 and the second locking groove 22, which is the locked state. The locking member 3 restricts the relative rotation between the first rotating member 1 and the second rotating member 2.

[0035] The elastic element 5 is a spring segment, installed between the second rotating element 2 and the locking element 3; the unlocking button 4 consists of a pressing surface and two pushing feet extending from the periphery of the pressing surface. The unlocking button 4 is installed on the first rotating element 1, and the two pushing feet of the unlocking button 4 extend into the first rotating element 1 and abut against the locking element 3. The pressing surface of the unlocking button 4 is exposed outside the first rotating element 1.

[0036] When pressed, the unlock button 4 pushes the locking member 3 inward, and the locking member 3 moves towards the second rotating member 2 and the second locking groove 22 until it is completely disengaged from the first locking groove 11 and fully inserted into the second locking groove 22, thereby unlocking. After unlocking, the first rotating member 1 and the second rotating member 2 can rotate freely relative to each other. At the same time, during the folding process, the seat armrest 12 tilts downward, and under the action of gravity, the second rotating member 2 and the seat armrest flip down and fold down synchronously. When it is necessary to unfold, simply flip the seat armrest 12 upward to the locked state.

[0037] In this embodiment, in order to provide pressing force to the unlock button 4 and to combine the retraction linkage of the frame with the unlocking structure, a small local protrusion or a small inclined and outwardly flared surface is added to the upper part of the connecting member 7 as a trigger 6. The trigger 6 is used to contact the unlock button 4 and apply pressure. Specifically, when retracting the bike, as the armrest seat 10 rotates with the handlebar 8 of the frame, the trigger 6 can contact the unlock button 4 and apply pressure to it to unlock it.

[0038] Example 2:

[0039] like Figure 5 As shown, compared with Embodiment 1, the difference in this embodiment is that a torsion member 9 is also installed between the first rotating member 1 and the second rotating member 2. The torsion member 9 is a torsion spring. Specifically, one pin of the torsion spring is connected to the first rotating member 1, and the other pin is connected to the second rotating member 2. When unlocked, the second rotating member 2 can quickly flip from the unfolded state to the folded state under the action of the torsion spring, that is, the seat armrest 12 can quickly flip down and fold. When it needs to be unfolded, the seat armrest 12 can be flipped up to the locked state by hand.

[0040] Example 3:

[0041] Compared with Embodiments 1 and 2, the difference in Embodiment 1 is that the trigger 6 is set on the central base 80. Specifically, a small local protrusion is added to the inner side of the central base 80 as the trigger 6. The trigger 6 is used to contact the unlock button 4 and apply pressure to unlock it.

[0042] Example 4:

[0043] Compared with embodiments 1, 2, and 3, the difference in this embodiment is that the trigger 6 is set on the handlebar 8 of the frame. Specifically, a small local protrusion is added to the lower inner side of the handlebar 8 as the trigger 6, or a trigger 6 extends from the lower edge of the handlebar 8 toward the armrest seat 10. The trigger 6 is used to contact the unlock button 4 and apply pressure to unlock it.

[0044] Example 5:

[0045] like Figure 6 As shown, a stroller frame employs the automatic unlocking mechanism of the stroller armrest described in Examples 1-3. A set of front frame legs 13 are rotatably hinged to the front side of the central base 80, and a set of rear frame legs 14 are fixedly connected to the rear side of the central base 80. Wheels 16 are connected to the bottom of the front frame legs 13 and the rear frame legs 14. A transmission linkage assembly 15 is connected between the frame handlebar 8 and the front frame legs 13. This transmission linkage assembly 15 is used to achieve coordinated folding. Specifically, when the frame handlebar 8 is flipped, under the transmission action of the transmission linkage assembly 15, the front frame legs 13 and the seat fold synchronously. At the same time, the automatic unlocking mechanism of the armrest unlocks synchronously, and the seat armrest 12 completes folding, ultimately achieving the folding of the entire stroller. Figure 7 As shown.

[0046] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An automatic unlocking mechanism for a stroller armrest, comprising a central base (80) of the stroller frame, a frame handle (8) rotatably hinged above the central base (80), an armrest seat (10) rotatably hinged to the central base (80), a connecting member (7) movably connected between the central base (80) and the armrest seat (10), and a seat armrest (12) connected to the armrest seat (10), characterized in that, The armrest seat (10) is provided with a first rotating component (1), and the end of the seat armrest (12) is provided with a second rotating component (2). The first rotating component (1) and the second rotating component (2) are connected to each other and can rotate relative to each other. A locking member (3) is provided between the first rotating member (1) and the second rotating member (2) to engage the two to form a limit; an unlocking button (4) is also provided for driving the locking member (3) to move and thus unlocking, and an elastic member (5) is provided for returning the locking member (3) to its original position; A trigger (6) capable of applying pressure to the unlock button (4) is provided on the central base (80), the frame handlebar (8), or the connecting member (7); when the bike is put away, as the armrest seat (10) rotates with the frame handlebar (8), the trigger (6) can contact the unlock button (4) and apply pressure to it to unlock it.

2. The automatic unlocking mechanism for the stroller armrest according to claim 1, characterized in that, The trigger (6) is located on the upper part of the connector (7), and the trigger (6) can abut against the unlock button (4) and apply pressure.

3. The automatic unlocking mechanism for the stroller armrest according to claim 1, characterized in that, The trigger (6) is located inside the central base (80). The trigger (6) can contact the unlock button (4) and apply pressure to unlock it.

4. The automatic unlocking mechanism for the stroller armrest according to claim 1, characterized in that, The trigger (6) is located on the lower inner side of the handlebar of the frame, or the trigger (6) is located on the lower edge of the handlebar of the frame and extends toward the armrest seat (10). The trigger (6) can contact the unlock button (4) and apply pressure to unlock it.

5. The automatic unlocking mechanism for a stroller armrest according to any one of claims 1-3, characterized in that, The first rotating part (1) is provided with a first locking groove (11), and the second rotating part (2) is provided with a second locking groove (22). The first locking groove (11) and the second locking groove (22) can overlap and align; the locking part (3) can be simultaneously embedded in the aligned first locking groove (11) and the second locking groove (22).

6. The automatic unlocking mechanism for the stroller armrest according to claim 4, characterized in that, The elastic element (5) is disposed between the second rotating element (2) and the locking element (3); the unlocking button (4) is disposed on the first rotating element (1) and the unlocking button (4) extends into the inner end of the first rotating element (1) and abuts or connects with the locking element (3); the pressing end of the unlocking button (4) is exposed outside the first rotating element (1). The locking member (3) can be released from the first locking groove (11) under the drive of the unlocking button (4) to unlock; after unlocking, the first rotating member (1) and the second rotating member (2) can rotate freely relative to each other.

7. The automatic unlocking mechanism for a stroller armrest according to claim 5, characterized in that, A torsional member (9) is provided between the first rotating member (1) and the second rotating member (2) for driving the second rotating member (2) to flip from the unfolded state to the folded state.

8. The automatic unlocking mechanism for a stroller armrest according to claim 5, characterized in that, The first rotating part (1) is hinged to the second rotating part at a cylindrical annular shape, which has an internal mounting cavity, and the periphery of the mounting cavity is provided with at least two recessed first locking grooves (11); the second rotating part (2) is hinged to the first rotating part at a cylindrical annular shape, which has an internal mounting cavity, and the periphery of the mounting cavity is provided with at least two recessed second locking grooves (22); a locking part (3) is provided in the mounting cavity formed by the overlapping and splicing of the hinged parts of the first rotating part (1) and the second rotating part (2). The main body of the locking part (3) is set as a cylinder that matches the mounting cavity, and the periphery of the main body has an outwardly extending extension that matches the first locking groove (11) and the second locking groove (22).

9. A stroller frame, characterized in that, The stroller armrest automatic unlocking mechanism according to any one of claims 1-8 further includes a front frame leg (13) located at the front of the frame, a rear frame leg (14) located at the rear of the frame, and a seat located in the middle of the frame.

10. The stroller frame according to claim 9, characterized in that, The front leg (13) of the frame is rotatably hinged to the front side of the central base (80), and the rear leg (14) of the frame is fixedly connected to the rear side of the central base (80); a transmission linkage assembly (15) for realizing linkage folding is provided between the handlebar (8) and the front leg (13) of the frame; and wheels (16) are connected to the bottom of the front leg (13) and the rear leg (14) of the frame.

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