Push handle telescopic folding structure of baby carriage

Abstract

The utility model discloses a push handle telescopic folding structure of a baby carriage, which comprises a lower carriage frame, a telescopic push handle rotationally connected to the lower carriage frame and a carriage frame locking mechanism arranged between the lower carriage frame and the telescopic push handle, and the telescopic push handle comprises a grip and a push rod; the frame locking mechanism comprises a spring bolt which is arranged at the lower part of the push rod and can slide relative to the push rod, and a locked part which is arranged on the lower frame and can be locked by the spring bolt, an unlocking hook which can move relative to the grip is arranged at the lower part of the grip, and the unlocking hook can be driven to move by an unlocking assembly on the grip; when the telescopic push handle is contracted to the shortest state, the unlocking hook hooks the to-be-hooked portion corresponding to the spring bolt, at the moment, the unlocking hook and the spring bolt can be driven to move synchronously through unlocking operation of the unlocking assembly to retreat from the locked portion of the lower frame, and unlocking of the frame is achieved. The bicycle frame unlocking device is novel in structure, unlocking of the bicycle frame can be achieved only when the telescopic push handle retracts to the shortest state, accidental unlocking of the bicycle frame caused by misoperation in the using process is avoided, and the using safety performance is greatly improved.

Description

Technical Field

[0001] The utility model relates to a telescopic and foldable handle structure of a baby carriage. Background Art

[0002] A baby stroller in the prior art is a tool vehicle designed to facilitate outdoor activities for babies. It is a means of transportation for babies to go out, and it is also a necessity for taking care of babies. In order to facilitate storage and transportation, most baby strollers on the market are foldable. They generally include a foldable lower frame, a push handle rotatably connected to the lower frame, and a frame locking mechanism arranged at the connection between the push handle and the lower frame. In order to further reduce the volume after folding, many push handles adopt a telescopic structure. Therefore, this type of baby stroller often needs to have a push handle telescopic adjustment mechanism while having a frame locking mechanism. The frame locking mechanism of baby strollers on the market is generally unlocked directly by its corresponding unlocking component, but during use, it is very likely that the frame will be accidentally unlocked due to misoperation, so there are certain safety hazards. Summary of the invention

[0003] The utility model aims to provide a handlebar telescopic and foldable structure for a baby carriage, which has a novel structure and can unlock the frame only when the telescopic handlebar is retracted to the shortest state, thereby avoiding accidental unlocking of the frame due to misoperation during use and greatly improving the safety performance of use.

[0004] The technical scheme of the utility model is: a push handle telescopic folding structure of a baby carriage, comprising a lower frame with an unfolded position and a folded position, a telescopic push handle rotatably connected to the lower frame, and a frame locking mechanism arranged at the connection between the telescopic push handle and the lower frame, the telescopic push handle comprising a grip and a push rod rotatably connected to the connection with the lower frame, the lower part of the grip is movably inserted in the push rod, and the grip has a telescopic adjustment mechanism that can be locked with the push rod in multiple gears;

[0005] The frame locking mechanism comprises a locking tongue arranged at the lower part of the push rod and capable of sliding relative to the push rod, and a locked part arranged on the lower frame and capable of being locked by the locking tongue. The lower part of the handle is provided with an unlocking hook capable of moving relative to the handle, and the unlocking hook can be driven to move by the unlocking assembly on the handle.

[0006] When the telescopic push handle is retracted to the shortest state, the unlocking hook hooks the hook-waiting portion corresponding to the locking tongue. At this time, the unlocking operation of the unlocking assembly can drive the unlocking hook and the locking tongue to move synchronously and withdraw from the locked portion of the lower frame, thereby unlocking the frame.

[0007] As a preferred technical solution, the lower part of the handle is provided with a sliding seat that can slide axially relative to the handle, the unlocking hook is rotatably matched with the sliding seat, the sliding seat is connected to the unlocking assembly through a first traction rope, and the unlocking hook can be driven to slide by the unlocking assembly on the handle through the traction rope and the sliding seat and can be driven to rotate by the telescopic adjustment mechanism;

[0008] When the telescopic push handle is retracted to the shortest state and the unlocking hook hooks the hook-waiting portion corresponding to the lock tongue, the unlocking hook can be driven by the telescopic adjustment mechanism to rotate relative to the sliding seat to disengage the hook-waiting portion of the lock tongue, thereby realizing the separation of the unlocking hook and the lock tongue.

[0009] As a preferred technical solution, the telescopic adjustment mechanism includes a sliding linkage component that is arranged in the handle and can slide relative to the handle, an adjustment button that movably cooperates with the sliding linkage component and can drive it to slide, and a positioning pin that radially slides with the handle and slides with the inclined surface of the sliding linkage component. A first spring is provided between the adjustment button and the handle, a second spring is provided between the positioning pin and the handle, and a plurality of positioning holes for the positioning pin to lock into are provided on the push rod; the telescopic adjustment mechanism realizes the length adjustment of the telescopic push handle by plugging and fitting the positioning pin with the positioning holes at different positions;

[0010] When the grip and the push rod of the telescopic push handle are telescopically locked, the positioning pin lock is set in the corresponding positioning hole. At this time, the sliding linkage assembly can be driven to slide by adjusting the button to drive the positioning pin to slide inward and then withdraw from the positioning hole to achieve unlocking between the grip and the push rod.

[0011] As a preferred technical solution, the unlocking hook cooperates with the positioning pin; when the telescopic push handle is retracted to the shortest state and the unlocking hook hooks the hook-waiting part corresponding to the lock tongue, the positioning pin can be driven to slide inward by adjusting the button to drive the unlocking hook to rotate relative to the sliding seat to disengage the hook-waiting part of the lock tongue, thereby realizing the separation of the unlocking hook and the lock tongue.

[0012] As a preferred technical solution, the lower part of the handle has a mounting seat, the positioning pin can be radially slidably assembled on the mounting seat, the sliding seat can be axially slidably mounted on the mounting seat, and there is a movable gap between the mounting seat and the handle for the unlocking hook to rotate and slide axially.

[0013] As a preferred technical solution, there are two positioning pins arranged at intervals, and the unlocking hook is movably matched with the positioning pin in a low position.

[0014] As a preferred technical solution, the sliding linkage assembly includes a first sliding member located at the upper part of the handle and a second sliding member located at the lower part of the handle, the first sliding member cooperates with the inclined surface of the adjustment button, and the second sliding member cooperates with the inclined surface of the positioning pin. The first sliding member and the second sliding member are connected by a second traction rope.

[0015] As a preferred technical solution, the handle is U-shaped, the push rod is movably sleeved on both sides of the handle, the unlocking component is arranged in the middle position of the upper end of the handle and simultaneously controls the sliding seats in the handles on both sides through a traction rope.

[0016] As a preferred technical solution, a lock tongue spring is provided between the lock tongue and the push rod.

[0017] Compared with the prior art, this application has the following advantages:

[0018] 1. The utility model has a novel structure. The frame can be unlocked only when the telescopic push handle is retracted to the shortest state, which avoids accidental unlocking of the frame due to misoperation during use and greatly improves the safety performance of use.

[0019] 2. When the telescopic push handle of the utility model is retracted to the shortest state, the unlocking hook movably arranged at the lower part of the handle hooks the hook-waiting part corresponding to the lock tongue, and the unlocking hook and the lock tongue can be driven to move synchronously and withdraw from the locked part of the lower frame through the unlocking operation of the unlocking assembly, thereby unlocking the frame; at the same time, the movable cooperation between the telescopic positioning pin and the unlocking hook in the telescopic adjustment mechanism is cleverly utilized, and the hooking cooperation between the unlocking hook and the hook-waiting part of the lock tongue can be released by adjusting the button. The structural design is compact and novel, and the internal structure of the handle is simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0022] Figure 1It is a schematic diagram of the three-dimensional structure of the telescopic push handle in the utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of;

[0024] Figure 3 for Figure 2 Schematic diagram of the connection structure of the internal components;

[0025] Figure 4 It is a schematic diagram of the assembly side structure of the telescopic push handle and the lower frame in the utility model;

[0026] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of;

[0027] Figure 6 for Figure 5 A three-dimensional schematic diagram of the connection structure of the internal components;

[0028] Figure 7 for Figure 6 A local enlarged schematic diagram in FIG.

[0029] Figure 8 for Figure 6 Schematic diagram of the assembly structure of the internal components;

[0030] Fig. 9 for Figure 5 Schematic diagram of partial assembly structure of internal components;

[0031] Fig.10 It is a schematic diagram of the side structure of the utility model when it is in an unfolded state during implementation;

[0032] Fig.11 It is a schematic diagram of the three-dimensional structure in the folding process when the utility model is implemented;

[0033] Fig.12 It is a schematic diagram of the side structure of the utility model in the folding process during implementation.

[0034] Wherein: 1 lower frame; 101 front support; 102 rear support; 103 bottom support frame; 104 front wheel assembly; 105 rear wheel assembly;

[0035] 2 telescopic push handle; 201 grip; 202 push rod; 203 mounting seat

[0036] 3 frame locking mechanism; 301 locking tongue; 3011 hooking portion; 302 locked portion; 303 locking tongue spring;

[0037] 4 telescopic adjustment mechanism; 401 sliding linkage assembly; 4011 first sliding member; 4012 second sliding member; 4013 second traction rope; 402 adjustment button; 403 positioning pin; 403a positioning pin in a low position; 404 positioning hole;

[0038] 5 unlocking hook; 501 frame body; 502 hook setting part;

[0039] 6 sliding seat;

[0040] 7 first traction rope;

[0041] 8 Unlock components. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the embodiment of the present application will be clearly and completely described below in conjunction with the drawings of the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application. It can be understood that, in the absence of conflict, some technical means of the various embodiments described herein can be replaced or combined with each other.

[0043] In the description of the specification and claims of this application, if there are terms such as "first", "second", etc., they are only used to distinguish the objects described and do not have any order or technical meaning. Therefore, the objects defined as "first", "second", etc. may explicitly or implicitly include one or more of the objects. In addition, "one" or "a" and similar words do not indicate a quantitative limitation, but indicate the existence of at least one, and "multiple" means no less than two.

[0044] In the description of the specification and claims of this application, if there are terms such as "connect", "install", "fix", "contain", etc., unless otherwise specified, they should be understood in a broad sense. For example, "connection" can be a separate connection or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a non-detachable connection or a detachable connection. For another example, "contain" does not necessarily mean complete containment of the whole. The concept also includes the partial containment of a part protruding from the outside. For those skilled in the art, the specific meanings of the aforementioned terms in this application can be understood according to the specific circumstances.

[0045] In the description of the specification and claims of this application, if there are terms such as "upper", "lower", "horizontal" and the like indicating an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the application clearly and simply, and does not indicate or imply that the elements referred to must have a specific direction, be constructed and operated in a specific orientation. These directional terms are relative concepts, used for relative description and clarification, and may change accordingly according to the change in the orientation of the components placed in the drawings. For example, if the device in the figure is turned over, the elements described as "below" other elements will be positioned "above" other elements.

[0046] In the description of the specification and claims of this application, if the term "if" is present, it can generally be interchanged with "when" or "at" or "in response to determining" or "in response to detecting", depending on the context.

[0047] In the description of the specification and claims of this application, if there is a "direction" of movement, including movement with a directional component, the term "in the direction" is not necessarily understood as movement only in that one direction. For those skilled in the art, the specific meaning of the aforementioned terms in this application can be understood according to the specific circumstances.

[0048] like Figures 1 to 12 As shown, a handlebar telescopic folding structure of a baby carriage comprises a lower frame 1 having an unfolded position and a folded position, a telescopic handle 2 rotatably connected to the lower frame 1 , and a frame locking mechanism 3 arranged at the connection between the telescopic handle 2 and the lower frame 1 .

[0049] In this embodiment, the telescopic push handle 2 includes a grip 201 and a push rod 202 rotatably connected to the lower frame 1, the lower portion of the grip 201 is movably inserted into the push rod 202, and the grip 201 has a telescopic adjustment mechanism 4 that can be locked with the push rod 202 in multiple gears.

[0050] In this embodiment, the frame locking mechanism 3 includes a locking tongue 301 disposed at the lower part of the push rod 202 and slidable relative thereto, a locked portion 302 disposed on the lower frame 1 and locked by the locking tongue 301, and a locking tongue spring 303 is disposed between the locking tongue 301 and the push rod 202. An unlocking hook 5 is disposed at the lower part of the handle 201 and movable relative thereto.

[0051] Specifically, a sliding seat 6 which can slide axially relative to the handle 201 is provided at the lower part of the handle 201, and the unlocking hook 5 is rotatably cooperated with the sliding seat 6. The sliding seat 6 is connected to the unlocking component 8 on the handle 201 through a first traction rope 7. The unlocking hook 5 can be driven to slide axially by the unlocking component 8 on the handle 201 through the traction rope 7 and the sliding seat 6, and can be driven to rotate by the telescopic adjustment mechanism 4.

[0052] In this embodiment, the telescopic adjustment mechanism 4 includes a sliding linkage component 401 arranged in the handle 201 and capable of sliding relative to the handle 201, an adjustment button 402 movably cooperates with the sliding linkage component 401 and can drive the sliding thereof, and a positioning pin 403 radially slidingly cooperates with the handle 201 and slidingly cooperates with the inclined surface of the sliding linkage component 401. A first spring is provided between the adjustment button 402 and the handle 201, a second spring is provided between the positioning pin 403 and the handle 201, and a plurality of positioning holes 404 for the positioning pin 403 to lock into are provided on the push rod 202; the telescopic adjustment mechanism 4 realizes the length adjustment of the telescopic push handle 2 by plugging and fitting the positioning pin 403 with the positioning holes 404 at different positions.

[0053] When the handle 201 and the push rod 202 of the telescopic push handle 2 are telescopically locked, the positioning pin 403 is locked in the corresponding positioning hole 404. At this time, the sliding linkage assembly 401 can be driven to slide by adjusting the button 402 to drive the positioning pin 403 to slide inward and then exit the positioning hole 404, thereby achieving unlocking between the handle 201 and the push rod 202.

[0054] In this embodiment, the positioning pins 403 are preferably two arranged at intervals in the axial direction, and the unlocking hook 5 is movably matched with the positioning pin 403a at the lower position. Specifically, the side wall of the positioning pin 403a at the lower position has an upper protrusion and a lower protrusion, and a movable groove is formed between the upper protrusion and the lower protrusion. The unlocking hook 5 has a frame body 501 and a hooking portion 502 formed at the front end of the frame body 501 and corresponding to the hooking portion 3011 of the lock tongue 301. The frame body is sleeved outside the corresponding positioning pin and the side frame strip is embedded in the movable groove and can move up and down relative to it.

[0055] When the telescopic push handle 2 is retracted to the shortest state and the unlocking hook 5 hooks the hook-waiting portion 3011 corresponding to the lock tongue 301, the frame body 501 of the unlocking hook 5 is located at the bottom of the movable groove. At this time, if the adjustment button 402 drives the positioning pin 403 to slide inward, the lower protrusion of the positioning pin 403 can lift the frame body 501 upward, drive the unlocking hook 5 to rotate, and realize the separation of the unlocking hook 5 and the lock tongue 301.

[0056] In this embodiment, the lower part of the handle 201 has a mounting seat 203, the positioning pin 403 can be radially slidably assembled on the mounting seat 203, the sliding seat 6 can be axially slidably installed on the mounting seat 203, and there is a movable gap between the mounting seat 203 and the handle 201 for the unlocking hook 5 to rotate and slide axially.

[0057] In this embodiment, the sliding linkage assembly 401 includes a first sliding member 4011 located at the upper part of the handle 201 and a second sliding member 4012 located at the lower part of the handle 201, the first sliding member 4011 cooperates with the inclined surface of the adjustment button 402, the second sliding member 4012 cooperates with the inclined surface of the above-mentioned positioning pin 403, and the first sliding member 4011 and the second sliding member 4012 are connected by a second traction rope 4013.

[0058] Preferably, a second guiding slope is formed on the second sliding member 4012, and an arc-shaped guiding surface is formed at the bottom of the side projection of the positioning pin 403. The positioning pin 403 slides with the second guiding slope of the second sliding member 4012 through the arc-shaped guiding surface, thereby realizing the extension and retraction of the positioning pin 403. A first guiding slope is formed on the first sliding member 4011, and a guiding block is provided at the inner end of the adjusting button 402. The adjusting button 402 slides with the first guiding slope of the first sliding member 4011 through the guiding block, thereby driving the first sliding member 4011 to slide axially.

[0059] In this embodiment, the handle 201 is preferably U-shaped, the push rod 202 is movably sleeved on both sides of the handle 201, and the unlocking assembly 8 is arranged at the middle position of the upper end of the handle 201 and controls the sliding seats 6 in the handles 201 on both sides through the first traction rope 7. This design facilitates the one-hand unlocking operation, making the unlocking more convenient and quick. Since the unlocking assembly 8 has various structures and is a conventional mechanism in the technical field, it is not specifically limited or elaborated here. It can be a press-type unlocking assembly, a rotating unlocking assembly, a sliding unlocking assembly, etc.

[0060] The lower frame 1 in the figure of this embodiment includes a front bracket 101 with a front wheel assembly 104, a rear bracket 102 with a rear wheel assembly 105, and a bottom support frame 103. The front part of the bottom support rod 103 is rotatably connected to the upper part of the front bracket 101, and the rear part is rotatably connected to the rear extension rod on the rear bracket 102. The lower end of the push rod 202 of the telescopic push handle 2 is rotatably connected to the upper end of the front bracket 101, and the frame locking mechanism 3 is arranged at the connection between the push rod 202 and the front bracket 101. The upper end of the rear bracket 102 is rotatably connected to the push rod 202. When the frame locking mechanism 3 is unlocked, the telescopic push handle 2 is pressed down to realize the folding of the whole vehicle. The specific structure of this lower frame is only a specific implementable method, and its structure is not limited to this.

[0061] The working principle of the utility model is:

[0062] When the stroller of the utility model is unfolded, the telescopic handle 2 is arranged in an inclined manner with the front lower and the rear higher, and the locked portion 302 in the lower frame 1 (the front frame in the figure of this embodiment) is locked by the locking tongue 301 in the push rod 202. At this time, the frame locking mechanism 3 is in a locked state, and the telescopic handle 2 cannot rotate relative to the front frame. However, the telescopic handle 2 can be adjusted in its usable length through the telescopic adjustment mechanism 4.

[0063] When the stroller of the utility model needs to be folded, the sliding linkage assembly 401 is first driven to slide by the adjusting button 402, and the positioning pin 403 is driven to slide and retract, and then exit the positioning hole 404, so as to unlock the handle 201 and the push rod 202. Then, the telescopic push handle 2 is retracted to the shortest state, at which time the unlocking hook 5 hooks the hooking portion 3011 corresponding to the locking tongue 301, and then the unlocking operation of the unlocking assembly 8 drives the unlocking hook 5 and the locking tongue 301 to move synchronously and exit the locked portion 302 of the lower frame 1, so as to unlock the frame.

[0064] When the telescopic push handle 2 is retracted to the shortest state and the unlocking hook 5 hooks the hook-waiting portion 3011 corresponding to the lock tongue 301, the positioning pin 403 can be driven to slide inward by adjusting the button 402, thereby driving the unlocking hook 5 to rotate relative to the sliding seat 6 to disengage the hook-waiting portion 3011 of the lock tongue 301, thereby realizing the separation of the unlocking hook 5 from the lock tongue 301.

[0065] The utility model has a novel structure, and the frame can be unlocked only when the telescopic push handle 2 is retracted to the shortest state, thereby avoiding accidental unlocking of the frame due to misoperation during use, and greatly improving the safety performance of use.

[0066] The utility model ingeniously utilizes the movable cooperation between the telescopic positioning pin 403 and the unlocking hook 5 in the telescopic adjustment mechanism 4, and the hooking cooperation between the unlocking hook 5 and the hooking portion 3011 of the locking tongue 301 can be released by adjusting the button 402. The structural design is compact and novel, and simplifies the internal structure of the handle 201.

[0067] As preferred embodiments of the present invention, in the description of this specification, the reference terms "preferred", "optional", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0068] The above embodiments are only used to illustrate the detailed scheme of the present invention, and the present invention is not limited to the above detailed scheme, that is, it does not mean that the present invention must rely on the above detailed scheme to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of various raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. A handlebar telescopic folding structure for a baby stroller, comprising a lower frame having an unfolded position and a folded position, a telescopic handle rotatably connected to the lower frame, and a frame locking mechanism arranged at the connection between the telescopic handle and the lower frame, characterized in that: The telescopic push handle comprises a grip and a push rod rotatably connected to the lower frame, the lower portion of the grip is movably inserted into the push rod, and the grip has a telescopic adjustment mechanism that can be locked with the push rod in multiple gears; The frame locking mechanism comprises a locking tongue arranged at the lower part of the push rod and capable of sliding relative to the push rod, and a locked part arranged on the lower frame and capable of being locked by the locking tongue. The lower part of the handle is provided with an unlocking hook capable of moving relative to the handle, and the unlocking hook can be driven to move by the unlocking assembly on the handle. When the telescopic push handle is retracted to the shortest state, the unlocking hook hooks the hook-waiting portion corresponding to the locking tongue. At this time, the unlocking operation of the unlocking assembly can drive the unlocking hook and the locking tongue to move synchronously and withdraw from the locked portion of the lower frame, thereby unlocking the frame.

2. The handlebar telescopic folding structure of a baby stroller according to claim 1, characterized in that: The lower part of the handle is provided with a sliding seat which can slide axially relative to the handle, the unlocking hook is rotatably matched with the sliding seat, the sliding seat is connected to the unlocking assembly through a first traction rope, the unlocking hook can be driven to slide by the unlocking assembly on the handle through the traction rope and the sliding seat, and can be driven to rotate by the telescopic adjustment mechanism; When the telescopic push handle is retracted to the shortest state and the unlocking hook hooks the hook-waiting portion corresponding to the lock tongue, the unlocking hook can be driven by the telescopic adjustment mechanism to rotate relative to the sliding seat to disengage the hook-waiting portion of the lock tongue, thereby realizing the separation of the unlocking hook and the lock tongue.

3. The telescopic and foldable handle structure of a baby stroller according to claim 2, characterized in that: The telescopic adjustment mechanism includes a sliding linkage component that is arranged in the handle and can slide relative to the handle, an adjustment button that movably cooperates with the sliding linkage component and can drive it to slide, and a positioning pin that radially slides with the handle and slides with the inclined surface of the sliding linkage component. A first spring is provided between the adjustment button and the handle, a second spring is provided between the positioning pin and the handle, and a plurality of positioning holes for the positioning pin to lock into are provided on the push rod; the telescopic adjustment mechanism realizes the length adjustment of the telescopic push handle by plugging and fitting the positioning pin with the positioning holes at different positions; When the grip and the push rod of the telescopic push handle are telescopically locked, the positioning pin lock is set in the corresponding positioning hole. At this time, the sliding linkage assembly can be driven to slide by adjusting the button to drive the positioning pin to slide inward and then withdraw from the positioning hole to achieve unlocking between the grip and the push rod.

4. The telescopic and foldable handle structure of a baby stroller according to claim 3, characterized in that: The unlocking hook cooperates with the positioning pin; when the telescopic push handle is retracted to the shortest state and the unlocking hook hooks the hook-waiting portion corresponding to the lock tongue, the positioning pin can be driven to slide inward by adjusting the button to drive the unlocking hook to rotate relative to the sliding seat to disengage the hook-waiting portion of the lock tongue, thereby realizing the separation of the unlocking hook and the lock tongue.

5. The handle telescopic folding structure of a baby stroller according to claim 4, characterized in that: The lower part of the handle is provided with a mounting seat, the positioning pin can be radially slidably assembled on the mounting seat, the sliding seat can be axially slidably mounted on the mounting seat, and there is a movable gap between the mounting seat and the handle for the unlocking hook to rotate and slide axially.

6. The handle telescopic folding structure of a baby stroller according to claim 4, characterized in that: The number of the positioning pins is two and they are spaced apart from each other, and the unlocking hook is movably matched with the positioning pin in the lower position.

7. The handlebar telescopic folding structure of a baby stroller according to claim 3, characterized in that: The sliding linkage assembly includes a first sliding member located at the upper part of the handle and a second sliding member located at the lower part of the handle, the first sliding member cooperates with the inclined surface of the adjustment button, and the second sliding member cooperates with the inclined surface of the positioning pin.

8. The handlebar telescopic folding structure of a baby stroller according to claim 7, characterized in that: The first sliding member is connected to the second sliding member via a second traction rope.

9. The handlebar telescopic folding structure of a baby stroller according to claim 2, characterized in that: The handle is U-shaped, the push rod is movably sleeved on both sides of the handle, the unlocking assembly is arranged at the middle position of the upper end of the handle and controls the sliding seats in the handles on both sides at the same time through the traction rope.

10. The handle telescopic folding structure of a baby stroller according to claim 1, characterized in that: A lock tongue spring is arranged between the lock tongue and the push rod.

Images