Push handle assembly and stroller thereof

Abstract

The push handle assembly comprises a push rod and a grip, the push rod is of a hollow structure and comprises an upper push rod body and a lower push rod body which are sleeved with each other in a penetrating mode, the upper push rod body and the lower push rod body can slide relatively so that the push rod bodies can stretch out and draw back to adjust the length, and the grip is fixedly connected with the upper push rod body and provided with an operation piece. A flexible and bendable transmission pull wire is arranged in the push rod and comprises an outer sleeve and an inner core wire which are in sliding fit, one end of the outer sleeve is fixed relative to the upper push rod, the other end of the outer sleeve is fixed relative to the lower push rod, one end of the inner core wire is in transmission connection with the operating part, and the other end of the inner core wire is a driving end responding to actions of the operating part. The shape of the outer sleeve changes adaptively, but the length of the outer sleeve is not changed, so that the inner core wire can effectively transmit the traction force applied by the operating part, a bicycle frame can be unlocked with one hand, and operation is more convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to a child product, in particular to a push handle assembly and a child stroller. BACKGROUND

[0002] The existing child stroller has an unfolded state and a folded state, and comprises front legs, rear legs, a telescopic handle, a first locking mechanism and a second locking mechanism, the first locking mechanism is used for keeping the telescopic length of the handle, and the second locking mechanism is used for keeping the child stroller in the unfolded state. Wherein, the first unlocking piece and the second unlocking piece are arranged on the handle, the first unlocking piece is unlocked by a pull wire, and the second unlocking piece is arranged on the upper handle and triggers the unlocking of the second locking mechanism to unlock the frame when the upper handle is telescoped. This causes the folding operation of the child stroller to be based on the premise of the contraction of the handle, which is troublesome to operate and has certain limitations. If the second unlocking piece also unlocks the second locking mechanism by a pull wire, the pull wire cannot effectively transmit the pulling force due to the bending of the pull wire caused by the telescoping of the handle, resulting in unlocking failure. Therefore, the second unlocking piece must be arranged on both lower handles, which causes the operation to be inconvenient to unlock by both hands at the same time. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a push handle assembly which is convenient to operate.

[0004] The present application provides a push handle assembly, comprising a push rod and a handle, the push rod is a hollow structure, and comprises an upper push rod and a lower push rod which are sleeved with each other, the upper push rod and the lower push rod are relatively slidable to make the push rod adjustable in length, the handle is fixedly connected with the upper push rod and is provided with an operating piece, the inside of the push rod is provided with a flexible and bendable transmission pull wire, the transmission pull wire comprises a sleeve tube and an inner core wire which are in sliding fit, one end of the sleeve tube is fixed relative to the upper push rod, and the other end is fixed relative to the lower push rod, one end of the inner core wire is in transmission connection with the operating piece, and the other end is a driving end which responds to the action of the operating piece.

[0005] The following also provides several optional modes, but not as an additional limitation to the above overall scheme, just a further supplement or preferred, without technical or logical contradiction, each optional mode can be combined with the above overall scheme, and can also be combined between multiple optional modes.

[0006] Optionally, the transmission pull wire has a coiled section, and the coiled section can be deformed to adapt to the telescoping of the push rod.

[0007] Optionally, the transmission pull wire has an upper connecting section, a lower connecting section and a coiled section in the middle, and the coiled section is a ring structure formed by winding the transmission pull wire.

[0008] Optionally, two sides of the ring structure are forced to be track-shaped by the inner wall of the push rod, the ring structure is shortened when the push rod is elongated, and the ring structure is elongated when the push rod is shortened.

[0009] Optionally, the outer sleeve comprises a main body portion spirally wound by a wire and two connectors arranged at two ends of the main body portion, and the two connectors are fixedly connected with the upper push rod and the lower push rod respectively.

[0010] Optionally, the main body portion has a plurality of spirals, and adjacent two spirals abut against each other.

[0011] Optionally, the push rods are arranged in pairs, the handle is arranged between the two push rods arranged in pairs, and the operating member is arranged at a middle position of the handle.

[0012] Optionally, the lower push rod comprises a lower rod body and a connecting seat fixed to a bottom end of the lower rod body, the connecting seat is hingedly connected with the front leg rod, the upper push rod comprises an upper rod body and a base fixed to the upper rod body, and two ends of the outer sleeve are fixed to the base and the connecting seat respectively.

[0013] The application also provides a child stroller comprising a front leg assembly, a rear leg assembly and the push handle assembly, the child stroller has a folded state and an unfolded state, and has a locking member for keeping the child stroller in the unfolded state, and the driving end is in transmission connection with the locking member.

[0014] Optionally, the front leg assembly comprises a front leg rod and a front wheel, the rear leg assembly comprises a rear leg rod and a rear wheel, a top of the front leg rod is hingedly connected with a bottom of the lower push rod, a top of the rear leg rod is hingedly connected with the front leg rod, and a connecting rod is hingedly connected between the rear leg rod and the lower push rod.

[0015] The push handle assembly of the application has the following advantages: the length of the push rod changes, the outer sleeve changes adaptively, the inner core wire slides in the channel with a constant length established in the outer sleeve, the pulling force applied by the operating member can be effectively transmitted, and the corresponding operation, such as unlocking the frame with one hand, can be realized, and the operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural view of a push handle assembly according to an embodiment of the application;

[0017] Figure 2 FIG. 4 is a structural view of a child stroller according to an embodiment of the application in an unfolded state;

[0018] Figure 3 FIG. 5 is a structural view of the child stroller according to the embodiment of the application in a folded state;

[0019] Figure 4 FIG. 6 is a structural view of a child stroller according to another embodiment of the application in an unfolded state; Figure 2A perspective view of the stroller from an overhead angle;

[0020] Figure 5 For Figure 4 A partial cross-sectional view in the A-A direction;

[0021] Figure 6 For Figure 5 A partial cross-sectional view of the push rod retraction;

[0022] Figure 7 For Figure 5 An enlarged view of the B portion;

[0023] Figure 8 A structural view of the transmission pull wire in the push handle assembly of an embodiment of the present application;

[0024] Figure 9 A partial structural view of the outer sleeve body portion of an embodiment of the present application.

[0025] The accompanying drawings are described as follows:

[0026] 1000, a stroller;

[0027] 100, a push handle assembly; 110, a push rod; 111, an upper push rod; 1111, an upper rod body; 1112, a base;

[0028] 112, a lower push rod; 1121, a lower rod body; 1122, a connecting seat; 120, a handle grip;

[0029] 130, an operating member; 140, a front leg assembly; 141, a front leg rod; 142, a front wheel;

[0030] 150, a rear leg assembly; 151, a rear leg rod; 152, a rear wheel;

[0031] 160, a locking member; 170, an elastic member; 180, a connecting rod;

[0032] 200, a transmission pull wire; 210, an inner core wire; 211, a driving end; 220, an outer sleeve; 221, a body portion; 222, a joint; 231, an upper connecting segment; 232, a lower connecting segment; 233, a coiled segment. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0034] It is to be understood that when a component is referred to as being "connected to" another component, it can be directly connected to the other component or intervening components can be present. When a component is referred to as being "configured to" perform a task or process, it can be understood that the component is "configured to" perform the task or process, but is not necessarily directly configured to perform the task or process on its own. That is, the component can include another component that is directly configured to perform the task or process, in which case the "configured to" can be understood to mean either that the component itself or the other component is "configured to" perform the task or process.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0036] In this application, the terms "first", "second", etc. are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number, order of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0037] Reference Figures 1 to 9 In an embodiment of the application, a push handle assembly 100 is provided, which comprises a push rod 110 and a handle 120, and the push handle assembly 100 is connected to a support frame to form a frame, and the frame is installed with a seat to form a stroller. Wherein, the frame provided by the application is a foldable structure, which has an unfolded state and a folded state, the push handle assembly 100 and the support frame are hinged, and a locking mechanism is provided to keep the frame in the unfolded state.

[0038] The push rod 110 is one or two symmetrical push rods as shown in the drawings, and the handle 120 is connected between the two push rods 110, or each push rod 110 is provided with a handle 120. The push rod 110 is a hollow structure and comprises an upper push rod 111 and a lower push rod 112 which are sleeved with each other, the lower push rod 112 is connected to the support frame, and the upper push rod 111 is slidable relative to the lower push rod 112 so that the length of the push rod 110 can be adjusted. The handle 120 is fixedly connected with the upper push rod 111 and is provided with an operating member 130.

[0039] The inside of the push rod 110 is provided with a flexible and bendable transmission pull wire 200, and the transmission pull wire 200 has poor elasticity, that is, the two ends are difficult or unable to be elongated when subjected to pulling force. The transmission pull wire 200 comprises a slidingly fitted outer sleeve tube 220 and an inner core wire 210, one end of the outer sleeve tube 220 is fixed relative to the upper push rod 111, and the other end is fixed relative to the lower push rod 112, one end of the inner core wire 210 extends out of the outer sleeve tube 220 and is in transmission connection with the operating member 130, and the other end is a driving end 211 which responds to the action of the operating member 130.

[0040] In actual operation, after the upper push rod 111 slides and extends relative to the lower push rod 112, the outer sleeve 220 changes in curvature and establishes a fixed-length channel for the inner core wire 210. By pulling one end of the inner core wire 210 through the operating member 130, the pulling force can be transmitted to the driving end 211, for example, to unlock the aforementioned locking mechanism to unlock the frame.

[0041] The transmission pull wire 200 has an upper connecting section 231, a lower connecting section 232, and a middle coiled section 233. The coiled section 233 can deform to adapt to the extension and contraction of the push rod 110. The shape of the coiled section 233 is not limited, and it changes its shape to adapt to the extension and contraction of the push rod 110. When the push rod 110 extends and contracts, the upper push rod 111 and the lower push rod 112 respectively apply a pulling force or a pushing force to the upper connecting section 231 and the lower connecting section 232, thereby driving the outer sleeve 220 to change in curvature.

[0042] For example Figure 5 and Figure 6 As shown, the coiled section 233 is a ring structure formed by winding the transmission pull wire 200. The two sides of the ring structure are forced to become a racetrack type or a waist type due to the inner wall of the push rod 110. When the push rod 110 shortens, the length L of the ring structure elongates but still remains a waist type. When the push rod 110 elongates, the length of the ring structure shortens. When the push rod 110 elongates to a certain length, the ring structure can be released from abutting against the inner wall of the push rod 110 and become a circular shape. The shape change of the coiled section 233 has a certain rule, making the deformation more smooth and reducing the resistance to the sliding and extension of the push rod 110. During installation, the transmission pull wire 200 is wound around one turn to form the coiled section 233, and then the upper connecting section 231 and the lower connecting section 232 are fixed to the corresponding positions, facilitating installation.

[0043] The outer sleeve 220 includes a main body 221 formed by spirally winding a metal wire and connectors 222 arranged at both ends of the main body 221. The cross-sectional shape of the metal wire includes but is not limited to a circular shape. The two connectors 222 are fixedly connected, for example, clamped, to the upper push rod 111 and the lower push rod 112, respectively. The spiral winding allows the outer sleeve 220 to have the ability to change in curvature. Preferably, the main body 221 has multiple spirals, and adjacent two spirals abut against each other.

[0044] In an embodiment, the push rod 110 is symmetrically arranged in two, and the handle 120 is connected between the two push rods 110. Correspondingly, the operating member 130 is arranged at the middle position of the handle, and the transmission pull wire 200 is two and is transmissionally connected to the same operating member 130.

[0045] A locking structure is arranged between the upper push rod 111 and the lower push rod 112 to keep the push rod 110 fixed to a certain length, which includes a plurality of locking slots arranged on the lower push rod 112 and a locking pin movably arranged in the upper push rod 111, the locking pin extends into one of the locking slots to limit the sliding of the upper push rod 111. The upper push rod 111 movably has an unlocking member arranged thereon for driving the locking pin to exit the locking slot.

[0046] One of the frames provided in the present application (i.e. the stroller 1000 described below) is shown in Figures 2 to 9 The stroller 1000 includes a front leg assembly 140, a rear leg assembly 150 and a push handle assembly 100, and the push handle assembly 100 is as described in the foregoing embodiments. The stroller 1000 has an unfolded state and a folded state, and has a locking member 160 for keeping the stroller in the unfolded state, and the driving end 211 is in transmission connection with the locking member 160. The front leg assembly 140 includes a front leg rod 141 and a front wheel 142 mounted at the bottom of the front leg rod, and the rear leg assembly 150 includes a rear leg rod 151 and a rear wheel 152 mounted at the bottom of the rear leg rod. The top of the front leg rod 141 is hingedly connected to the bottom of the lower push rod 112, and has a locking slot matched with the locking member 160. The top of the rear leg rod 151 is hingedly connected to the front leg rod 141, and a connecting rod 180 is hingedly connected between the rear leg rod 151 and the lower push rod 112. When folded, the push handle assembly 100 is rotated to close to the rear leg rod 151, and the front leg rod 141 is rotated to close to the rear leg rod 151.

[0047] In the illustration, the lower push rod 112 includes a lower rod body 1121 and a connecting seat 1122 fixed to the bottom end of the lower rod body 1121. The connecting seat 1122 partially extends into the lower rod body 1121 and partially extends out of the lower rod body 1121 to be hingedly connected to the front leg rod 141. The upper push rod 111 includes an upper rod body 1111 and a base 1112 fixed to the upper rod body 1111. The locking member 160 is slidingly arranged in the connecting seat 1122, and the two ends of the outer sleeve 220 are fixed to the base 1112 and the connecting seat 1122, respectively. The connecting seat 1122 is provided with an elastic member 170, such as a spring, which acts on the locking member 160 to reset. The distance between the base 1112 and the operating member 130 is always constant, so it will not affect the length change of the inner core wire 210. In the illustration, the base 1112 is embedded at the bottom end of the upper rod body 1111.

[0048] When folding: press the operating member 130, apply pulling force to one end of the inner core wire 210, the driving end 211 responds and pulls the locking member 130 to slide out of the locking slot, allowing the push rod 110 to rotate and close to the rear foot assembly, while driving the front foot assembly to rotate and close to the rear foot assembly; When unfolding, the locking member 160 is aligned with the locking slot, the elastic member 170 acts on the locking member 160 to make it extend into the locking slot, and the driving end 211 of the inner core wire 210 is applied to make the inner core wire 210 slide back. In the folding and unfolding operation, no matter how long the push rod 110 slides to extend, the transmission pull wire 200 deforms adaptively, and the outer sleeve 220 establishes a fixed-length channel, so that the inner core wire 210 can effectively transmit the pulling force applied by the operating member.

[0049] The push handle assembly of the present application, the length of the push rod changes, the outer sleeve changes adaptively, and the inner core wire effectively transmits the pulling force applied by the operating member in the fixed-length channel established by the outer sleeve, so that the corresponding operation can be realized, such as single-handed unlocking of the frame.

[0050] The technical features of the above embodiments can be combined in any way. To make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present disclosure. When the technical features in different embodiments are embodied in the same figure, it can be considered that the figure also discloses the combination of each embodiment involved.

[0051] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application.

Claims

1. A push handle assembly, comprising a push rod and a grip, wherein the push rod is a hollow structure and includes an upper push rod and a lower push rod that are interlocked, the upper push rod and the lower push rod being slidable relative to each other to allow the push rod to be telescopically adjustable in length, the grip being fixedly connected to the upper push rod and provided with an operating element, characterized in that, The inner part of the push rod is provided with a flexible and bendable transmission pull wire, which comprises a slidingly fitted outer sleeve and an inner core wire, one end of the outer sleeve is fixed relative to the upper push rod, the other end is fixed relative to the lower push rod, one end of the inner core wire is in transmission connection with the operating member, and the other end is a driving end responding to the action of the operating member.

2. The push handle assembly of claim 1, wherein, The transmission pull wire has a bending section which can be deformed to adapt to the extension and contraction of the push rod.

3. The push handle assembly of claim 2, wherein, The transmission pull wire has an upper connecting section, a lower connecting section and a middle bending section, and the bending section is a ring structure formed by winding the transmission pull wire.

4. The push handle assembly of claim 3, wherein, The two sides of the ring structure are forced to be in a racetrack shape by the inner wall of the push rod, and when the push rod is extended, the ring structure is shortened, and when the push rod is shortened, the ring structure is lengthened.

5. The push handle assembly of claim 1, wherein, The outer sleeve comprises a main body portion spirally wound by a metal wire and connectors arranged at both ends of the main body portion, and the two connectors are respectively fixedly connected with the upper push rod and the lower push rod.

6. The push handle assembly of claim 5, wherein, The main body portion has a plurality of spirals, and adjacent two spirals abut against each other.

7. The push handle assembly of claim 1, wherein, The push rods are arranged in pairs, the handle is arranged between the two push rods arranged in pairs, and the operating member is arranged at the middle position of the handle.

8. The push handle assembly of claim 1, wherein, The lower push rod comprises a lower rod body and a connecting seat fixed to the bottom end of the lower rod body, and the upper push rod comprises an upper rod body and a base fixed to the upper rod body, and the two ends of the outer sleeve are respectively fixed to the base and the connecting seat.

9. A stroller, characterized in that The child stroller comprises a front leg assembly, a rear leg assembly and a push handle assembly as claimed in any one of claims 1-8, the child stroller has a folded state and an unfolded state, and has a locking member for keeping the child stroller in the unfolded state, and the driving end is in transmission connection with the locking member.

10. The stroller of claim 9, wherein, The front leg assembly comprises a front leg rod and a front wheel, and the rear leg assembly comprises a rear leg rod and a rear wheel, the top of the front leg rod is hinged to the bottom of the lower push rod, the top of the rear leg rod is hinged to the front leg rod, and a connecting rod is hinged between the rear leg rod and the lower push rod.

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