A baby stroller folding and unlocking structure and unlocking and folding method

Abstract

The present invention relates to a folding and unlocking structure for a baby stroller and an unlocking and folding method thereof, comprising: an unlocking button arranged in an operation box; an unlocking pull rope, which is configured to move in a direction close to the unlocking button and drive a dial block to rotate when the unlocking button is pressed in the unlocked state; the dial block is rotatably provided on a side connecting section connected to the side of the baby stroller on the push handle; a driving rod, the middle portion of the driving rod is rotatably provided on a slide rail arranged side by side with the side connecting section, and the two ends of the driving rod are respectively a force-bearing end and a driving end, the force-bearing end is forced to rotate under the action of a swinging driving clamp when unlocking so that the driving end applies a thrust to the first pushing block; the first pushing block, one end of the first pushing block abuts against the driving end, and the other end is a driving unlocking surface; the first locking tongue is configured to retract the first protrusion into the inside of the slide rail through the relative sliding of the first driven surface and the driving unlocking surface when unlocking, thereby releasing the lock between the sliding seat and the slide rail.

Description

Technical Field

[0001] The present invention relates to the field of bed design, and in particular to a folding and unlocking structure and an unlocking and folding method for a baby carriage. Background Art

[0002] Existing strollers are primarily designed to confine infants, providing a safe riding space. However, disassembling existing strollers after use is extremely inconvenient, requiring a screwdriver to remove bolts from the frame joints. Furthermore, the removed bolts and frame joints can easily be lost during storage, hindering the subsequent installation and use of the playard.

[0003] To address this issue, one option is to fold and store strollers when not in use. However, the unfolded state of such foldable beds is unstable, often causing them to wobble or deform easily, making them difficult to use safely. Alternatively, a locking mechanism could be considered after unfolding, but current locking methods are inflexible. Unlocking requires laborious manipulation of the frame, legs, and other parts of the stroller, resulting in slow unlocking and folding. Furthermore, the bed is not flexible when unfolded or folded. Summary of the Invention

[0004] Based on this, it is necessary to provide a baby stroller folding and unlocking structure and unlocking and folding method to address at least some of the problems raised above.

[0005] A baby stroller folding and unlocking structure, comprising:

[0006] An operating box is located on the handle of the stroller;

[0007] an unlocking button, disposed in the operation box and movable along a direction of being embedded in the operation box;

[0008] an unlocking pull cord, one end of which is connected to the shift block and the other end of which is linked to the unlocking button, wherein the unlocking pull cord is configured to move toward the unlocking button when the unlocking button is pressed in the unlocked state and drive the shift block to rotate;

[0009] A shift block is rotatably mounted on a side connecting section of the push handle connected to the side of the baby stroller, and the shift block is provided with a driving chuck;

[0010] a driving rod, wherein the middle portion of the driving rod is rotatably disposed on a slide rail arranged side by side with the side connecting section, and the two ends of the driving rod are respectively a force-bearing end and a driving end, the force-bearing end is clamped to the driving clamp in a locked state, and can be rotated under the action of the swinging driving clamp when unlocked so that the driving end applies a thrust to the first push block;

[0011] A first push block is arranged in the slide rail in the same direction as the length of the slide rail, one end of the first push block abuts against the driving end, and the other end is a driving unlocking surface that forms an angle with the length direction of the first push block;

[0012] The first locking tongue is provided in the slide rail and is located at an end of the first pushing block away from the driving rod. The first locking tongue is provided with a first driven surface that is in contact with the driving unlocking surface on the side facing the first pushing block, and a first protrusion is provided on the side facing the sliding surface of the slide rail. In the locked state, the first protrusion protrudes from the sliding surface and is embedded in the first locking hole of the sliding seat, so that the sliding seat is locked to the slide rail; the first locking tongue is configured to be acted upon by the thrust of the first pushing block in the unlocked state, and the first driven surface and the driving unlocking surface are relative slipped to retract the first protrusion into the inside of the slide rail, thereby releasing the lock between the sliding seat and the slide rail.

[0013] A method for unlocking and folding a baby stroller comprises the following steps:

[0014] In the locked state, the first protrusion of the first locking tongue protrudes from the sliding surface and engages with the first locking hole of the sliding seat, thereby locking the sliding seat to the slide rail and preventing the baby stroller from being folded;

[0015] When the lock needs to be released, the unlock button is pressed to drive the unlocking rope to move toward the unlocking button and drive the shift block to rotate;

[0016] The driving clamping head of the shift block swings and drives the driving rod clamped therewith to rotate, and the driving end of the driving rod applies a thrust to the first push block; the first push block moves along the length direction under the action of the thrust, and drives the unlocking surface and the first driven surface to slide relative to each other, so that the first protrusion of the first lock tongue retracts from the first lock hole of the sliding seat to the inside of the slide rail, thereby releasing the lock between the sliding seat and the slide rail.

[0017] The above-mentioned baby stroller folding and unlocking structure and unlocking and folding method have at least the following beneficial technical effects:

[0018] (1) This embodiment can keep the stroller's body shape stable when locked, ensuring safe use. The unlock button is linked to the first lock tongue provided on the rear side of the stroller. When unlocking is required, the unlock button is simply operated to link the first lock tongue at the rear side to release the lock between the sliding seat and the slide rail, thereby performing the folding action.

[0019] (2) In this embodiment, the push handle can be directly held to unlock the baby stroller. The hand does not need to be moved to other parts of the baby stroller for operation, which is extremely convenient and labor-saving. The locking and unlocking operations are fast and the response is timely. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the folding and unlocking structure of a baby stroller provided by an embodiment of the present invention;

[0021] Figure 2 for Figure 1 rear side view;

[0022] Figure 3 for Figure 1 The operation box part is omitted in the internal structure diagram after the operation box;

[0023] Figure 4 for Figure 1 A in the middle is enlarged and the internal structure diagram after omitting the outer tube, inner tube and slide rail;

[0024] Figure 5 for Figure 4 A schematic diagram of the structure in which the second pull block and the second locking tongue are arranged in the inner tube (perspective);

[0025] Figure 6 for Figure 4 A schematic structural diagram of the second pull block and the second lock tongue (perspective);

[0026] Figure 7 for Figure 4 A schematic diagram of the sliding seat in the figure cooperating with the first locking tongue;

[0027] Figure 8 for Figure 1 Schematic diagram of the baby stroller being folded after being unlocked;

[0028] In the figure,

[0029] 1. Stroller; 2. Push handle; 21. Slide rail; 22. Outer tube; 221. Second lock hole; 23. Inner tube; 3. Sliding seat; 31. First lock hole; 4. Swing bar; 5. Front side bar; 6. Front lower enclosure; 7. Rear enclosure;

[0030] 100, operation box; 110, guide rod; 120, waist-shaped guide hole; 130, transition guide rod; 140, button spring; 150, operation lock button; 151, locking rod;

[0031] 200, unlock button; 201, opening; 202, connection hole;

[0032] 210. Unlock the drawstring;

[0033] 220, shift block; 221, drive chuck; 222, shift block drives torsion spring;

[0034] 230, driving rod; 231, force-bearing end; 232, driving end;

[0035] 240, first push block; 241, drive unlocking surface;

[0036] 250, first locking tongue; 251, first driven surface; 252, first protrusion; 253, first locking tongue driving spring;

[0037] 300, adjustment button;

[0038] 310, Adjust the drawstring;

[0039] 320, second pulling block; 321, accommodating cavity; 322, driving adjustment surface;

[0040] 330 , second locking tongue; 331 , second driven surface; 332 , second protrusion; 333 , second locking tongue driving spring. DETAILED DESCRIPTION

[0041] The present invention will be further described below with reference to the accompanying drawings.

[0042] To facilitate understanding of the present invention, various embodiments defined in the claims of the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are shown in the drawings, which contain various specific details to assist in such understanding, but these details should be considered as merely exemplary. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Accordingly, those of ordinary skill in the art will recognize that changes and improvements may be made to the various embodiments described herein without departing from the scope of the present invention as defined by the appended claims. In addition, descriptions of well-known functions and configurations may be omitted for clarity and brevity.

[0043] It will be apparent to those skilled in the art that the following description of various embodiments of the present invention is provided for the purpose of illustration only and not for the purpose of limiting the invention as defined by the appended claims.

[0044] Throughout the specification and claims of this application document, the words "comprise" and "include" and variations of the words, such as "including" and "comprising" mean "including but not limited to", and are not intended to (and will not) exclude other components, integers or steps. Features, integers or characteristics described in conjunction with a particular aspect, embodiment or example of the invention will be understood to be applicable to any other aspect, embodiment or example described herein unless incompatible therewith.

[0045] It should be understood that the singular forms "a", "an", and "the" include plural references unless the context clearly dictates otherwise. The expressions "including" and / or "may include" as used in the present invention are intended to indicate the presence of corresponding functions, operations, or elements, and are not intended to limit the presence of one or more functions, operations, and / or elements. In addition, in the present invention, the terms "including" and / or "having" are intended to indicate the presence of the characteristics, quantities, operations, elements, and components disclosed in the application documents, or a combination thereof. Therefore, the terms "including" and / or "having" should be understood as additional possibilities of the presence of one or more other characteristics, quantities, operations, elements, and components, or a combination thereof.

[0046] In the present invention, the expression "or" includes any or all combinations of the words listed together. For example, "A or B" may include A or B, or may include both A and B.

[0047] It should be understood that when an element is referred to as being “fixed to” another element, it can be directly on the other element or there may also be an intervening element; when an element is considered to be “connected” or “coupled” to another element, it can be directly connected or coupled to the other element or there may also be an intervening element.

[0048] The terms "up", "down", "left", "right", etc. mentioned in the text are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with the context of the relevant art and this specification, and should not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0050] like Figure 1-Figure 4 、 Figure 7 As shown, in one embodiment of the present invention, a folding and unlocking structure for a baby stroller is provided, comprising:

[0051] The operation box 100 is provided on the handle 2 of the baby stroller 1;

[0052] The unlocking button 200 is provided in the operation box 100 and can move along the direction of being embedded in the operation box 100;

[0053] An unlocking pull cord 210, one end of which is connected to the shift block 220 and the other end of which is linked to the unlocking button 200. When the unlocking button 200 is pressed in the unlocking state, the unlocking pull cord 210 is configured to move toward the unlocking button 200 and drive the shift block 220 to rotate;

[0054] A shift block 220 is rotatably mounted on a side connecting section of the push handle 2 connected to the side of the stroller 1, and a driving clamp 221 is provided on the shift block 220;

[0055] A driving rod 230, wherein the middle portion of the driving rod 230 is rotatably mounted on a slide rail 21 arranged parallel to the side connecting section, and the two ends of the driving rod 230 are respectively a force-bearing end 231 and a driving end 232. The force-bearing end 231 is engaged with the driving clamp 221 in the locked state, and can be rotated under the action of the swinging driving clamp 221 when unlocked so that the driving end 232 applies a thrust to the first pushing block 240;

[0056] A first push block 240 is provided in the slide rail 21 along the length direction of the slide rail 21. One end of the first push block 240 abuts against the driving end 232, and the other end is a driving unlocking surface 241 that forms an angle with the length direction of the first push block 240.

[0057] The first locking tongue 250 is provided in the slide rail 21 and is located at the end of the first pushing block 240 away from the driving rod 230. The first locking tongue 250 is provided with a first driven surface 251 that is in contact with the driving unlocking surface 241 on the side facing the first pushing block 240, and a first protrusion 252 is provided on the sliding surface of the first locking tongue 250 facing the slide rail 21. In the locked state, the first protrusion 252 protrudes from the sliding surface and is embedded in the first locking hole 31 of the sliding seat 3, so that the sliding seat 3 is locked to the slide rail 21; the first locking tongue 250 is configured to be acted upon by the thrust of the first pushing block 240 in the unlocked state, and the first protrusion 252 is retracted into the inside of the slide rail 21 through the relative sliding of the first driven surface 251 and the driving unlocking surface 241, thereby releasing the lock between the sliding seat 3 and the slide rail 21.

[0058] Specifically, in the locked state, the first protrusion 252 of the first locking tongue 250 protrudes from the sliding surface and is embedded in the first locking hole 31 of the sliding seat 3, so that the sliding seat 3 is locked to the slide rail 21, and the baby carriage 1 cannot perform the folding and deformation operation.

[0059] When the lock needs to be released, the operator presses the unlocking button 200, driving the unlocking rope 210 to move in the direction close to the unlocking button 200 and driving the shift block 220 to rotate; the driving clamping head 221 of the shift block 220 swings, driving the driving rod 230 engaged with it to rotate, and the driving end 232 of the driving rod 230 applies a thrust to the first pushing block 240; the first pushing block 240 moves along the length direction under the action of the thrust, and drives the unlocking surface 241 and the first driven surface 251 to slide relative to each other, so that the first protrusion 252 of the first locking tongue 250 retracts from the first locking hole 31 of the sliding seat 3 to the inside of the sliding rail 21, thereby releasing the lock between the sliding seat 3 and the sliding rail 21, and the push handle 2 is moved to perform the folding action.

[0060] The side of the stroller 1 includes a swing arm 4. The rear end of the swing arm 4 is slidably connected to the slide rail 21 of the push handle 2 via a sliding seat 3. The front end of the swing arm 4 is rotationally connected to the rear end of the front side guard bar 5 of the stroller body. The middle portion of the front side guard bar 5 is rotationally connected to the side of the stroller 1, and the front end of the front side guard bar 5 is tilted forward and upward. When folding after unlocking, the push handle 2 is swung backward. Since the swing arm 4 is slidably connected to the slide rail 21 on one side of the push handle 2 via the sliding seat 3, the rear end of the swing arm 4 moves backward along the slide rail 21, and the front end of the front side guard bar 5 folds backward and downward. The front side guard bar 5 also drives the front lower enclosure 6, which is rotatably connected to it, to fold downward and backward. At the same time, the swinging of the swing arm 4 can also drive the rear fence 7 and other components, which are rotatably connected to it, to fold simultaneously.

[0061] This embodiment can maintain the stability of the stroller 1 when locked, ensuring safe use. The unlock button 200 is linked to the first locking tongue 250 provided on the rear side of the stroller 1. To unlock, simply operate the unlock button 200 to engage the first locking tongue 250 at the rear side, releasing the lock between the sliding seat 3 and the slide rail 21, and then folding can be performed.

[0062] In this embodiment, the lock can be unlocked by directly holding the push handle 2, and the hand does not need to move to other parts of the baby carriage 1 for operation, which is extremely convenient and labor-saving; the locking and unlocking operations are fast and the response is timely.

[0063] refer to Figure 3 In some embodiments, the unlocking pull cord 210 is housed in the push handle 2. The inner cavity of the push handle 2 is used to protect the unlocking pull cord 210, and it can also prevent accidental unlocking caused by exposure to the outside.

[0064] refer to Figure 3In some embodiments, there are two unlocking pull cords 210. One end of each of the two unlocking pull cords 210 is connected to a shift block 220 provided on one side of the stroller 1, and the other end is connected to the unlocking button 200. In this embodiment, by symmetrically arranging the unlocking structure and the unlocking pull cords 210 on both sides, a secure locking can be ensured. Even if the lock on one side fails, the other side can still be firmly locked. When unlocking, the unlocking pull cords 210 on both sides can be operated synchronously to unlock. In this embodiment, one end of the unlocking pull cords 210 is connected to the connection hole 202 provided on the surface of the unlocking button 200. Furthermore, the ends of the two unlocking pull cords 210 connected to the unlocking button 200 can also be connected, so that they can be wrapped around the unlocking button 200 at the same time, making assembly easier.

[0065] refer to Figure 4 and Figure 7 In some embodiments, it further includes: a first lock tongue driving spring 253, which is arranged on the side of the first lock tongue 250 facing away from the first protrusion 252, and the two ends of the first lock tongue driving spring 253 respectively press against the surface of the first lock tongue 250 and the inner wall of the slide rail 21, and is configured to be compressed and shortened by the thrust of the first push block 240 when unlocking and accumulate elastic potential energy, and to lengthen and push the first protrusion 252 to protrude from the sliding surface and embed into the first lock hole 31 of the sliding seat 3 when locking, and at the same time reversely drive the first push block 240 to reset.

[0066] Specifically, the first lock tongue drive spring 253 can be compressed and shortened by the thrust of the first push block 240 when unlocking, and accumulate elastic potential energy. When locking is required, the elastic potential energy is released, and after the length is increased, the first protrusion 252 is pushed back to protrude from the sliding surface and insert into the first lock hole 31 of the sliding seat 3 to achieve secure locking, while simultaneously driving the first push block 240 back to its original position. Therefore, when relocking is required after unlocking, the first protrusion 252 of the first lock tongue 250 and the first lock hole 31 are automatically locked in engagement, without the need for manual operation, which is beneficial to saving operation steps and achieving automatic locking.

[0067] refer to Figure 4 In some embodiments, it also includes: a shift block driving torsion spring 222, which is sleeved on the rotating shaft of the shift block 220, and the end thereof abuts against the inner wall of the push handle 2, and is configured to rotate simultaneously with the shift block 220 and accumulate elastic potential energy when unlocking, and rotate in the opposite direction and drive the shift block 220 to rotate in the opposite direction and reset when locking is required.

[0068] Specifically, the shift block driving torsion spring 222 can rotate simultaneously with the shift block 220 and accumulate elastic potential energy when unlocking, and release the elastic potential energy when locking is required, rotating in the opposite direction and driving the shift block 220 to rotate and reset in the opposite direction. Therefore, when locking again after unlocking, the shift block 220 automatically returns to the locked state, eliminating the need for manual operation, saving steps and achieving automatic locking.

[0069] refer to Figure 3-Figure 6 In some embodiments, a handle adjustment mechanism is further included, wherein the handle adjustment mechanism includes:

[0070] The adjustment button 300 is arranged side by side with the unlocking button 200 in the operation box 100 and can be moved along the direction of being embedded in the operation box 100;

[0071] An adjustment cord 310, one end of which is connected to the second pull block 320 and the other end of which is linked to the adjustment button 300. The adjustment cord 310 is configured to move toward the adjustment button 300 when the adjustment button 300 is pressed, thereby driving the second pull block 320 to translate along the length direction;

[0072] The second pull block 320 is arranged in the inner tube 23 of the push handle 2 in the same length direction as the push handle 2. The inner tube 23 is in the same length direction as the push handle 2. One end of the second pull block 320 is connected to the adjustment rope 310. One side of the second pull block 320 is provided with an accommodating cavity 321 for accommodating the second locking tongue 330. The inner wall of the accommodating cavity 321 at the end away from the adjustment rope 310 is a driving adjustment surface 322.

[0073] A second locking tongue 330 is disposed in the accommodating cavity 321. A second driven surface 331 is provided on the end of the second locking tongue 330 away from the adjustment rope 310, and is in contact with the driving adjustment surface 322. A second protrusion 332 is provided on the side of the second locking tongue 330 facing the bottom of the accommodating cavity 321. The second driven surface 331 is gradually inclined from top to bottom in a direction away from the second protrusion 332.

[0074] In the fixed state, the second protrusion 332 passes through the bottom of the accommodating cavity 321 and the inner tube 23 in sequence, and protrudes out of the second locking hole 221 on the outer tube 22 of the push handle 2, so that the inner tube 23 and the outer tube 22 are relatively fixed;

[0075] When in the adjustment state, the second pull block 320 is configured to move upward under the pulling force of the adjustment rope 310, and to drive the second protrusion 332 to retract into the inner tube 23 by driving the relative sliding of the adjustment surface 322 and the second driven surface 331, thereby releasing the relative fixation between the inner tube 23 and the outer tube 22, and then operating to pull the push handle 2, so that the push handle 2 drives the inner tube 23 to move along the length direction relative to the outer tube 22.

[0076] Specifically, in the fixed state, the second protrusion 332 passes through the bottom of the accommodating cavity 321, the inner tube 23, and protrudes from the second locking hole 221 on the outer tube 22, so that the inner tube 23 and the outer tube 22 are relatively fixed. At this time, the push handle 2 cannot be adjusted.

[0077] When the height of the push handle 2 needs to be adjusted, the operation is to press the adjustment button 300, which drives the adjustment rope 310 to move toward the direction close to the adjustment button 300 and drives the second pull block 320 to move along the length direction, and drives the second protrusion 332 to retract into the inner tube 23 by driving the relative sliding of the adjustment surface 322 and the second driven surface 331, thereby releasing the relative fixation between the inner tube 23 and the outer tube 22, and then operating to pull the push handle 2, and the push handle 2 drives the inner tube 23 to move relative to the outer tube 22 along the length direction to change the relative position between the inner tube 23 and the outer tube 22, thereby changing the overall height of the push handle 2. When the push handle 2 is moved to an appropriate height position and the second protrusion 332 is opposite to another second locking hole 221 on the outer tube 22, the adjustment button 300 is released, and under the reverse action of the second lock tongue driving spring 333, the second protrusion 332 successively passes through the groove bottom of the accommodating cavity 321, the inner tube 23, and protrudes out of the second locking hole 221, so that the inner tube 23 and the outer tube 22 are relatively fixed. At this time, the push handle 2 cannot be adjusted.

[0078] In this embodiment, the push handle 2 cannot be adjusted while fixed, which maintains the stability of the stroller 1 and ensures safe use. The adjustment button 300 is linked to the second locking tongue 330 of the push handle 2. When adjustment is required, simply operate the adjustment button 300 to release the second locking tongue 330, releasing the fixation between the outer tube 22 and the inner tube 23, and then perform the adjustment.

[0079] In this embodiment, the adjustment can be performed by directly holding the push handle 2 without moving the hand to other parts of the baby stroller 1, which is extremely convenient to operate; the adjustment operation is fast and the response is timely.

[0080] refer to Figure 4 and Figure 6In some embodiments, it further includes: a second lock tongue driving spring 333, which is provided on the side of the second lock tongue 330 facing away from the second protrusion 332, and the two ends of the second lock tongue driving spring 333 respectively press against the surface of the second lock tongue 330 and the inner wall of the inner tube 23, and is configured to shorten and accumulate elastic potential energy under the thrust of the second lock tongue 330 when the push handle 2 is adjusted, and can be lengthened to push the second protrusion 332 to pass through the bottom of the groove of the accommodating cavity 321, the inner tube 23, and protrude out of the second lock hole 221 of the outer tube 22 in sequence, so that the inner tube 23 and the outer tube 22 are relatively fixed, and at the same time, the second pull block 320 can be driven in the reverse direction to reset.

[0081] Specifically, the first lock tongue drive spring 253 can be shortened and accumulate elastic potential energy by the thrust of the second lock tongue 330 when the push handle 2 is adjusted. When the push handle 2 no longer needs to be adjusted, the elastic potential energy is released, the length increases, and the second protrusion 332 is pushed out of the groove bottom of the accommodating cavity 321, the inner tube 23, and protrudes out of the second lock hole 221 of the outer tube 22, thereby fixing the inner tube 23 and the outer tube 22 relative to each other, and at the same time, the second pull block 320 can be reversed to reset. Therefore, when the push rod needs to be fixed again after adjustment, the second protrusion 332 of the second lock tongue 330 is automatically kept in engagement and fixed with the inner tube 23 and the outer tube 22, eliminating the need for manual operation, which helps save operating steps and achieve automatic locking.

[0082] refer to Figure 3 In some embodiments, the operating box 100 further includes two guide rods 110 fixedly disposed in the operating box 100;

[0083] The unlocking button 200 and the adjusting button 300 are respectively provided with waist-shaped guide holes 120, and the two guide rods 110 are respectively passed through the two waist-shaped guide holes 120. When the unlocking button 200 and the adjusting button 300 move, the waist-shaped guide holes 120 cooperate with the guide rods 110 to provide guidance for the unlocking button 200 and the adjusting button 300;

[0084] The unlocking pull rope 210 and the adjusting pull rope 310 are respectively passed around the lower side of the circumferential surface of the guide rod 110 and are respectively fixed to the unlocking button 200 and the adjusting button 300.

[0085] Specifically, when unlocking or adjusting the push rod, the unlocking button 200 and the adjusting button 300 are pressed to drive the unlocking pull rope 210 and the adjusting pull rope 310 to move upward to pull the shift block 220 and the second pull block 320 respectively. During the movement, the waist-shaped guide hole 120 cooperates with the guide rod 110 to provide guidance for the unlocking button 200 and the adjusting button 300.

[0086] And because the unlocking pull rope 210 and the adjusting pull rope 310 respectively pass around the lower side of the circumferential surface of the guide rod 110, when the button moves upward, the position of the guide rod 110 is fixed and the connection point between the pull rope and the button moves upward. Compared with the method of not passing around the lower surface of the guide rod 110, the pull rope moves a longer distance along its own length, the stroke of pulling the shift block 220 to rotate and the second pull block 320 to move is longer, and the unlocking and adjustment action amplitude is larger, thereby ensuring that the action response is sensitive and reliable.

[0087] refer to Figure 3 In some embodiments, a transition guide rod 130 is further included, which is arranged side by side with the guide rod 110 between the two guide rods 110. The unlocking pull rope 210 and the adjusting pull rope 310 pass through the lower side of the circumferential surface of the transition guide rod 130 and are fixed to the unlocking button 200 and the adjusting button 300 respectively.

[0088] Specifically, taking the unlocking pull cord 210 as an example, the unlocking pull cords 210 on both sides of the unlocking button 200 bypass the lower side of the circumferential surface of the guide rods 110 in the unlocking button 200 and the adjustment button 300, respectively. Because one of the guide rods 110 in the adjustment button 300 is farther away from the unlocking button 200, when the unlocking button 200 is pressed, if the transition guide rod 130 is not provided, the travel distance of the unlocking pull cord 210 bypassing the guide rod 110 in the adjustment button 300 will be shorter. However, with the provision of the transition guide rod 130, compared to the arrangement without the transition guide rod 130, the unlocking pull cord 210 bypassing the guide rod 110 in the adjustment button 300 and then bypassing the transition guide rod 130 will travel a longer distance along its own length, resulting in a larger rotation angle of the shift block 220 and a larger unlocking amplitude, thereby ensuring a sensitive and reliable action response.

[0089] Similarly, with the transition guide rod 130, the adjustment cord 310, which has passed through the guide rod 110 in the unlocking button 200, then passes through the transition guide rod 130. Compared to a configuration without the transition guide rod 130, the adjustment cord 310 can travel a greater distance along its length after passing through the guide rod 110 and the transition guide rod 130 in the unlocking button 200, thereby increasing the travel distance of the second pull block 320 and increasing the adjustment range. This ensures a sensitive and reliable adjustment response.

[0090] refer to Figure 3In some embodiments, a button spring 140 is further included, which is respectively embedded in the mounting grooves of the unlocking button 200 and the adjusting button 300, and the length direction is consistent with the moving direction of the button. The upper end of the button spring 140 abuts against the abutment column on the inner wall of the operation box 100, and the lower end abuts against the inner wall of the mounting groove; the button spring 140 is configured to shorten and accumulate elastic potential energy when the button is pressed by the thrust of the corresponding button, and to lengthen and push the corresponding button to move in the opposite direction and reset when the button is released.

[0091] Specifically, the button is the unlock button 200 or the adjustment button 300. When the button is pressed, the button spring 140 can be shortened by the thrust of the corresponding button and accumulate elastic potential energy, and reversely drive the button to move and reset, thereby eliminating the need to manually pull out the button, which is beneficial to saving operating steps and realizing automatic operation.

[0092] refer to Figure 3 In some embodiments, the operation lock button 150 is further included, which is provided on the upper portion of the operation box 100 , and the locking rod 151 at the lower portion of the operation lock button 150 is inserted downward into the operation box 100 ;

[0093] The operation lock button 150 is configured to limit the movement of the unlock button 200 by abutting against the upper end surface of the unlock button 200 through the locking rod 151, and is configured to be movable to be opposite to the opening 201 of the upper end surface and offset from the upper end surface to release the restriction on the movement of the unlock button 200.

[0094] Specifically, the stroller 1 needs to be kept locked during normal use. To avoid accidental unlocking, the locking rod 151 of the operation lock button 150 abuts against the upper end surface of the unlock button 200 to limit the movement of the unlock button 200, thereby avoiding accidental unlocking and safety accidents. When unlocking is required, the operation lock button 150 is pushed to one side so that the locking rod 151 at the lower part of the operation lock button 150 is opposite to the opening 201 up and down. At this time, the unlock button 200 can be freely operated and pressed.

[0095] In the above description, although expressions such as "first" and "second" may be used to describe various elements of the present invention, they are not intended to limit the corresponding elements. For example, the above expressions are not intended to limit the order or importance of the corresponding elements. The above expressions are used to distinguish one component from another.

[0096] The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. A singular expression includes a plural expression unless there is a significant difference in context or scheme between them.

[0097] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the appended claims.

[0098] Those skilled in the art will understand that the various technical features of the above-described embodiments may be omitted, added, or combined in any manner accordingly. To make the description concise, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, and simple transformation methods that can be thought of by those skilled in the art, as well as solutions for making adaptive and functional structural transformations of existing technologies, should be considered to be within the scope of this specification.

[0099] The embodiments described above merely represent several implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patented invention. It should be noted that while the present invention has been shown and described with reference to various embodiments, it will be apparent to those skilled in the art that various variations and improvements in form and detail may be made without departing from the spirit of the present invention, and without departing from the scope of the present invention as defined by the appended claims, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patented invention shall be based on the appended claims.

Claims

1. A baby stroller folding and unlocking structure, characterized in that: include: An operating box is located on the handle of the stroller; an unlocking button, disposed in the operation box and movable along a direction of being embedded in the operation box; an unlocking pull cord, one end of which is connected to the shift block and the other end of which is linked to the unlocking button, the unlocking pull cord being configured to move toward the unlocking button and drive the shift block to rotate when the unlocking button is pressed in the unlocked state; the unlocking pull cord is accommodated in the push handle, one end of which is connected to the shift block provided on one side of the stroller, and the other end of which is wound around the unlocking button; A shift block is rotatably mounted on a side connecting section of the push handle connected to the side of the baby stroller, and the shift block is provided with a driving chuck; a driving rod, wherein the middle portion of the driving rod is rotatably disposed on a slide rail arranged side by side with the side connecting section, and the two ends of the driving rod are respectively a force-bearing end and a driving end, the force-bearing end is clamped to the driving clamp in a locked state, and can be rotated under the action of the swinging driving clamp when unlocked so that the driving end applies a thrust to the first push block; A first push block is arranged in the slide rail in the same direction as the length of the slide rail, one end of the first push block abuts against the driving end, and the other end is a driving unlocking surface that forms an angle with the length direction of the first push block; The first locking tongue is provided in the slide rail and is located at an end of the first pushing block away from the driving rod. The first locking tongue is provided with a first driven surface that is in contact with the driving unlocking surface on the side facing the first pushing block, and a first protrusion is provided on the side facing the sliding surface of the slide rail. In the locked state, the first protrusion protrudes from the sliding surface and is embedded in the first locking hole of the sliding seat, so that the sliding seat is locked to the slide rail; the first locking tongue is configured to be acted upon by the thrust of the first pushing block in the unlocked state, and the first driven surface and the driving unlocking surface are relative slipped to retract the first protrusion into the inside of the slide rail, thereby releasing the lock between the sliding seat and the slide rail.

2. The baby stroller folding and unlocking structure according to claim 1, characterized in that: Also includes: The first lock tongue driving spring is arranged on the side of the first lock tongue facing away from the first protrusion, and the two ends of the first lock tongue driving spring respectively press against the surface of the first lock tongue and the inner wall of the slide rail. The first lock tongue driving spring is configured to be compressed and shortened by the thrust of the first push block and accumulate elastic potential energy when unlocking, and to be longer in length and push the first protrusion to protrude from the sliding surface and embed into the first lock hole of the sliding seat when locking, and at the same time drive the first push block in the reverse direction to reset.

3. The baby stroller folding and unlocking structure according to claim 1, characterized in that: Also includes: The shift block drives the torsion spring, which is sleeved on the rotating shaft of the shift block and has its end abutted against the inner wall of the push handle. It is configured to rotate simultaneously with the shift block and accumulate elastic potential energy when unlocking, and rotate in the opposite direction and drive the shift block to rotate in the opposite direction and reset when locking is required.

4. The baby stroller folding and unlocking structure according to claim 1, characterized in that: The push handle adjustment mechanism is further included, and the push handle adjustment mechanism includes: An adjustment button is provided in the operation box side by side with the unlocking button and is movable along a direction of being embedded in the operation box; an adjustment cord, one end of which is connected to the second pull block and the other end of which is linked to the adjustment button, wherein the adjustment cord is configured to move toward the adjustment button when the adjustment button is pressed and drive the second pull block to translate along the length direction; A second pull block is arranged in the inner tube of the push handle in the same length direction as the push handle, and the inner tube is in the same length direction as the push handle. One end of the second pull block is connected to the adjustment rope. One side of the second pull block is provided with an accommodating cavity for accommodating a second locking tongue, and the inner wall of the accommodating cavity at the end away from the adjustment rope is a driving adjustment surface; A second locking tongue is disposed in the accommodating cavity, wherein an end of the second locking tongue away from the adjustment rope is provided with a second driven surface that is in contact with the driving adjustment surface, and a second protrusion is provided on a side of the second locking tongue facing the bottom of the accommodating cavity, and the second driven surface is gradually inclined from top to bottom in a direction away from the second protrusion; In the fixed state, the second protrusion passes through the groove bottom of the accommodating cavity, the inner tube, and protrudes out of the second locking hole on the outer tube of the push handle in sequence, so that the inner tube and the outer tube are relatively fixed; When in the adjustment state, the second pull block is configured to move upward under the pulling force of the adjustment rope, and to drive the second protrusion to retract into the inner tube by driving the relative sliding of the adjustment surface and the second driven surface, thereby releasing the relative fixation between the inner tube and the outer tube, and then operating the push handle to drive the inner tube to move relative to the outer tube along the length direction.

5. The baby stroller folding and unlocking structure according to claim 4, characterized in that: Also includes: The second lock tongue driving spring is arranged on the side of the second lock tongue facing away from the second protrusion, and the two ends of the second lock tongue driving spring respectively press against the second lock tongue surface and the inner wall of the inner tube. It is configured to shorten and accumulate elastic potential energy under the thrust of the second lock tongue when the push handle is adjusted, and can be lengthened to push the second protrusion to pass through the groove bottom of the accommodating cavity, the inner tube, and the second lock hole of the outer tube in sequence, so that the inner tube and the outer tube are relatively fixed, and at the same time, the second pull block can be driven in the reverse direction to reset.

6. The baby stroller folding and unlocking structure according to claim 4, characterized in that: It also includes two guide rods fixedly arranged in the operation box; The unlocking button and the adjusting button are respectively provided with waist-shaped guide holes, and the two guide rods are respectively passed through the two waist-shaped guide holes, and when the unlocking button and the adjusting button move, the waist-shaped guide holes cooperate with the guide rods to provide guidance for the unlocking button and the adjusting button; The unlocking pull rope and the adjusting pull rope are respectively passed around the lower side of the circumferential surface of the guide rod and are respectively fixed to the unlocking button and the adjusting button.

7. The baby stroller folding and unlocking structure according to claim 6, characterized in that: It also includes a transition guide rod, which is arranged side by side with the guide rod between the two guide rods. The unlocking pull rope and the adjustment pull rope pass around the lower side of the circumferential surface of the transition guide rod and are respectively fixed to the unlocking button and the adjustment button.

8. The baby stroller folding and unlocking structure according to claim 4, characterized in that: It also includes a button spring, which is respectively embedded in the mounting grooves of the unlocking button and the adjusting button, and the length direction is consistent with the moving direction of the button. The upper end of the button spring abuts against the abutment column on the inner wall of the operation box, and the lower end abuts against the inner wall of the mounting groove; the button spring is configured to shorten and accumulate elastic potential energy due to the thrust of the corresponding button when the button is pressed, and to lengthen and push the corresponding button to move in the opposite direction and reset when the button is released.

9. The baby stroller folding and unlocking structure according to claim 1, characterized in that: It also includes an operation locking button, which is provided on the upper part of the operation box, and a locking rod at the lower part of the operation locking button is inserted downward into the operation box; The operation lock button is configured to restrict the movement of the unlock button by abutting against the upper end surface of the unlock button through a locking rod, and is configured to be movable to be opposite to the opening of the upper end surface and offset from the upper end surface to release the restriction on the movement of the unlock button.

10. A method for unlocking and folding a baby stroller with the folding and unlocking structure of claim 1, characterized in that: The steps include: In the locked state, the first protrusion of the first locking tongue protrudes from the sliding surface and engages with the first locking hole of the sliding seat, thereby locking the sliding seat to the slide rail and preventing the baby stroller from being folded; When the lock needs to be released, the unlock button is pressed to drive the unlocking rope to move toward the unlocking button and drive the shift block to rotate; The driving clamping head of the shift block swings and drives the driving rod clamped therewith to rotate, and the driving end of the driving rod applies a thrust to the first push block; the first push block moves along the length direction under the action of the thrust, and drives the unlocking surface and the first driven surface to slide relative to each other, so that the first protrusion of the first lock tongue retracts from the first lock hole of the sliding seat to the inside of the slide rail, thereby releasing the lock between the sliding seat and the slide rail.

11. The method for unlocking and folding a baby stroller according to claim 10, characterized in that: After the locking between the sliding seat and the slide rail is released, the method further comprises: Swing the push handle backward, so that the rear end of the swing rod moves backward along the slide rail, and the front end of the front side guard rod rotatably connected to the swing rod folds backward and downward; the front side guard rod simultaneously drives the front lower enclosure rotatably connected to it to fold downward and backward; At the same time, the swing rod swings to drive the rear fence connected to the swing rod to fold.

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