CN111422290A

CN111422290A - Frame assembly and combination vehicle

Info

Publication number: CN111422290A
Application number: CN201910815308.4A
Authority: CN
Inventors: 应佳伟; 孙新生; 肖科平
Original assignee: Hangzhou Chic Intelligent Technology Co Ltd
Current assignee: Hangzhou Chic Intelligent Technology Co Ltd
Priority date: 2019-01-09
Filing date: 2019-08-30
Publication date: 2020-07-17
Also published as: CN109703673A; CN211223711U; CN211766044U; CN211223712U

Abstract

The invention provides a frame assembly and a combined vehicle, wherein the frame assembly comprises a frame, at least one front wheel pivoted on the front side of the frame and a rotary connecting mechanism arranged on the rear side of the frame, wherein the rotary connecting mechanism is used for rotatably connecting the frame to a balance vehicle, so that when the frame rotates relative to the balance vehicle, the front wheel which contacts the ground can leave the ground; the frame assembly can be rotatably connected with the balance car to form the combined car, the combined car is converted between the balance car and a tricycle, the combined car is suitable for a wide range of people, such as the old, children and the like, can also be ridden, is also suitable for beginners of balance cars, and solves the problem that the beginners are easy to cause due to inertia effect during braking and acceleration; secondly, the turning operation of the combined vehicle can be realized through a balance vehicle or a vehicle frame or the balance vehicle and the vehicle frame in a matching way, and the turning is more flexible and more stable.

Description

Frame assembly and combination vehicle

Technical Field

The invention belongs to the field of electric vehicles, and particularly relates to a frame assembly and a combined vehicle.

Background

The existing balance car mainly comprises two wheels and a pedal arranged between the two wheels, and a user mainly controls the car to move forward by means of self gravity. The existing two-wheeled balance vehicle generally has a high gravity center, and a beginner easily falls down due to the inertia effect when braking and accelerating; the existing two-wheeled balance car is mainly pedaled or has handles, the riding mode is single, the balance car can not be ridden in various modes, and the playability is single; the common balance car is mainly controlled by feet and legs, the turning is mainly realized by the deviation of the gravity center, and the car is not stable enough during the turning.

Disclosure of Invention

The invention aims to provide a frame assembly, which comprises a frame, at least one front wheel pivoted on the front side of the frame and a rotary connecting mechanism arranged on the rear side of the frame, wherein the rotary connecting mechanism is used for rotatably connecting the frame to a balance car so that the front wheel which contacts the ground can leave the ground when the frame rotates relative to the balance car; the frame assembly can be rotatably connected with the balance car to form the combined car, the combined car is converted between the balance car and a tricycle, the combined car is suitable for a wide range of people, such as the old, children and the like, can also be ridden, is also suitable for beginners of balance cars, and solves the problem that the beginners are easy to cause due to inertia effect during braking and acceleration; secondly, the turning operation of the combined vehicle can be realized through a balance vehicle or a vehicle frame or the balance vehicle and the vehicle frame in a matching way, and the turning is more flexible and more stable.

Preferably, the rotary connecting mechanism comprises a rotating shaft, and the rear side of the frame is rotatably connected with the balance car through the rotating shaft.

Preferably, the rotating connection mechanism comprises a fixed seat for mounting the balance car, the rear side of the frame is rotatably connected with the fixed seat through a rotating shaft, and the frame can rotate around the rotating shaft relative to the fixed seat; through providing the fixing base, need not to change the structure of original balance car, can realize changing the balance car into the combination car.

Preferably, the rotary connecting mechanism comprises a connecting seat arranged on the rear side of the frame, and the connecting seat is rotatably connected with the fixed seat through a rotating shaft; through the cooperation of the connecting seat and the fixed seat, the rotation process is stable, the inconvenience in mounting the frame caused by direct pin joint of the frame and the fixed seat is avoided, and the rear side of the frame is prevented from protruding out of the combined vehicle.

Preferably, the fixing seat is of a detachable structure, the fixing seat is fixedly connected with the balance car in a detachable mode, the balance car can be released from the combined car through detachable operation, and the selection mode of the riding car is more.

Preferably, the frame includes the body frame and connects the preceding frame in the body frame front side, the lower extreme at preceding frame is established to the front wheel pivot, the upper end of preceding frame is equipped with a handlebar, the body frame rear side passes through rotation coupling mechanism and balance car rotatable coupling, the handlebar can make the frame rotate for this balance car to realize that the frame subassembly is whole to be lifted, ride the driving and can lift the frame whole through operating the handlebar, ride and feel cool more, realize the effect of drift car.

Preferably, the mounting position of the connecting seat on the frame can be adjusted, so that the distance between the front wheel and the balance car can be adjusted to adapt to the use requirements of people with different heights.

Preferably, the height of the handlebar relative to the front wheel can be adjusted to adapt to the use requirements of people with different heights.

Preferably, the frame includes the body frame and connects the front frame in the body frame front side, be equipped with the installation department that multiunit and front wheel distance are different on the body frame, the connecting seat is installed at different installation departments through the selection, adjusts the distance between front wheel and the balance car, through this simple structure, can the quick adjustment front wheel with the distance between the balance car.

Another object of the present invention is to provide a combination vehicle, which comprises a balance vehicle and the above-mentioned frame assembly, wherein the frame is rotatably connected to the balance vehicle through a rotating connection mechanism, and when the frame rotates relative to the balance vehicle, the ground-contacting front wheel can leave the ground; the invention provides a frame component which can be used for rotationally connecting the frame component with a balance car so as to construct a combined car, the combined car can be converted between the balance car and a tricycle, is suitable for wide crowds, such as the old, children and the like, can also be ridden, is also suitable for beginners of balance cars, and solves the problem that the beginners are easy to cause due to inertia effect when braking and accelerating; secondly, the turning operation of the combined vehicle can be realized through a balance vehicle or a vehicle frame or the balance vehicle and the vehicle frame in a matching way, and the turning is more flexible.

Through the frame assembly provided by the invention, the combined vehicle is improved in safety compared with a single balance vehicle, is convenient and easy to get on hand, and is suitable for beginners and children or old people needing certain protection to ride; through the rotary connecting mechanism provided by the invention, the front wheel of the frame assembly can be lifted off the ground, and various riding modes are provided, such as a balance bike can be ridden independently, and the balance bike can be matched with the front wheel to be converted into a tricycle; is suitable for young people, is cool and has stronger playability.

Brief description of the drawings

FIG. 1 is a schematic structural view of a combination vehicle provided by the present invention;

FIG. 2 is a schematic view of a front wheel ground contact and ground separation state of the combined vehicle provided by the invention;

FIGS. 3 and 4 are a schematic structural view and an exploded structural view, respectively, of a vehicle frame assembly provided by the present invention;

FIG. 5 is a schematic exploded view of the frame according to the present invention;

fig. 6 is a schematic structural view of a vehicle frame assembly with a function expansion member provided in the present invention.

Detailed Description

Preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the specific features in any suitable way, and the invention will not be further described in relation to the various possible combinations in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

In the description of the present invention, it is to be understood that the terms "front", "back", "inner", "outer", "upper", "lower", "radial", and "longitudinal", etc., indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced device or component must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in FIG. 1, the embodiment of the present invention provides a frame assembly comprising a frame 2, at least one front wheel 3 pivotally arranged at the front side of the frame, and a rotation connection mechanism arranged at the rear side of the frame; the frame 2 is rotatably connected to the balance car 1 via a rotation connection mechanism, and the front wheel 3 which contacts the ground can leave the ground when the frame 2 rotates relative to the balance car 1 via the rotation connection mechanism.

The above "ground-contacting front wheels are able to leave the ground", which is to be understood broadly as meaning that at least one front wheel is able to change from a ground-contacting state to a ground-leaving state, and ground is also to be interpreted broadly as: other platforms or surfaces, etc. having a certain supporting effect on the front wheels.

The frame assembly is used in combination with a balance car, wherein the balance car comprises a single-wheel or multi-wheel self-balancing vehicle; preferably, the invention adopts a double-wheel rodless balance car.

Referring to fig. 2, the frame assembly provided by the invention can combine the frame assembly with a balance car to obtain a combined car; it can be understood that the number of the front wheels on the front side can be more than one, and the combined vehicle can be used as a balance vehicle and a multi-wheel vehicle; in the embodiment, the front side of the frame is pivoted with a front wheel, so that the combined vehicle can be converted between a balance vehicle and a tricycle, and particularly, when the front wheel is supported on the ground, the combined vehicle is a tricycle, compared with the balance vehicle, the tricycle is greatly improved in safety and stability, and wide in applicable crowd, such as the old, children and the like, and can also be ridden; the device can also be suitable for beginners of the balance car to avoid the problem that the beginners are easy to cause due to inertia effect when braking and accelerating; when the front wheel is lifted off the ground by utilizing the rotary connecting mechanism, the combined vehicle is converted into an independent balance vehicle for riding; in addition, the combined vehicle provided by the invention can be used for a rider to lift the front wheel for playing, the effect of drifting the vehicle is realized by matching the front wheel which is away from the ground with the balance vehicle, the playability of the product is improved, and the fun of returning to childhood is realized.

Through the combined vehicle, the invention provides multiple turning modes, and particularly, when a rider rides the combined vehicle, the rider can stand on the pedal of the balance vehicle and can realize turning by depending on the turning function of the balance vehicle; the turning of the combined vehicle can also be controlled by depending on the vehicle frame, for example, by controlling the rotation of the front wheels of the vehicle frame; the turning function of the frame and the balance car can be combined for use, and the turning control process is more flexible;

in the embodiment of the invention, the frame 2 provided by the invention comprises a main frame 20 and a front frame connected to the front side of the main frame 20, wherein the front wheel 3 is pivoted at the lower end of the front frame, the upper end of the front frame is provided with a handle 21, and the rear side of the main frame 20 is rotatably connected with the balance car through the rotating connecting mechanism; lifting the handlebar 21 may be sufficient to cause the frame assembly 2 to rotate relative to the balance car, thereby effecting lifting the front wheel 3 off the ground, providing a form of play similar to a drifting car; and the existence of handlebar makes the person of riding can ride on handlebar 21 with walking, and the process of riding is more steady safety.

The handle bars 21 in the above embodiments may be coupled to the front wheels to control the left and right steering of the front wheels through the handle bars. Due to the arrangement, compared with a single riding balance car, the steering control of the combined car is more flexible in steering and more convenient to control; and when riding the combination vehicle, ride the passerby and can stand on the balance car, control the front wheel through the handlebar and lift to control the front wheel simultaneously and turn to about, so playable nature is stronger, is fit for pursuing the young person of brand-new experience and rides.

In the embodiment of the invention, the frame is a foldable frame, so that the storage volume of the combined vehicle can be effectively reduced, and the combined vehicle is convenient to store and carry.

In the embodiment of the invention, the rotary connecting mechanism comprises a rotating shaft 6 arranged at the rear side of the frame, and the frame 2 can rotate around the rotating shaft; optionally, the frame is directly connected with the balance car in a rotating manner through a rotating shaft, so that the frame can rotate around the rotating shaft relative to the balance car, and the front wheels which touch the ground can be lifted off the ground under the condition that the balance car is not moved; in other embodiments of the present invention, in order to avoid improving the structure of the existing balance car, the rotational connection mechanism provided by the present invention further includes a fixing seat 4 for mounting the balance car, that is, the fixing seat is mounted on the balance car, and then the frame is rotationally connected to the fixing seat through a rotating shaft, so that the frame can rotate around the rotating shaft relative to the fixing seat, and thus, by providing the fixing seat 4 on the balance car 1, the rotation of the frame relative to the balance car can be realized without changing the structure of the balance car 1.

In the embodiment of the invention, the rotary connecting mechanism comprises a connecting seat 5 arranged at the rear side of the frame, the connecting seat 5 is rotatably connected with a fixed seat 4 through a rotating shaft 6, and thus, the connecting seat 5 is matched with the fixed seat 4 to rotatably connect the frame assembly 2 with the balance car 1; it will be appreciated that the attachment sockets may be fixed directly to the rear side of the frame, and may also be fixedly attached to the rear side of the frame in a removable manner.

In the embodiment of the invention, the fixed seat is a detachable structure, and the fixed seat 4 is detachably and fixedly connected with the balance car 1, so that the connection between the balance car 1 and the frame 2 can be released through the detaching operation, so that an independent balance car can be separated from the combined car, and the balance car and the frame assembly can be combined together to form the combined car for riding according to the requirement;

optionally, the fixed seat 4 is a quick release structure, and the quick release structure is used for locking the balance car; in this embodiment, as shown in fig. 3 and 4, the fixing base includes an upper clamping member 41, a lower clamping member 44, and a locking mechanism; the upper clamping piece 41 and the lower clamping piece 44 are matched to form a limiting surface 40 for locking the balance car 1, the upper clamping piece 41 and the lower clamping piece 44 are locked or unlocked through a locking mechanism, referring to fig. 5, pivot holes (410, 501 and 502) for the rotating shaft 6 to pivot through are correspondingly formed in the upper clamping piece 41 and the connecting seat 5; optionally, the rotating shaft is a pair of

locking screws

61, 62, and the pair of

locking screws

61, 62 passes through the upper clamping piece through a spacer 63 and a pivot hole (410, 501, 502) arranged corresponding to the connecting base; specifically, the pair of locking screws pass through the pivot holes through the spacer bushes; the connecting seat is fixedly connected to the rear side of the frame component, and the frame component can drive the connecting seat 6 to rotate around the pair of locking screws; thus, when the rider lifts the handlebar, the frame, the front wheel and the connecting seat are lifted integrally through the rotating connection relationship between the upper clamping piece and the connecting seat; in a specific embodiment of the present invention, the upper clamping member 41 and the lower clamping member 44 respectively have a first side and a second side which are oppositely disposed, the first side of the upper clamping member is hinged to the first side of the lower clamping member, the hinge shaft is a pair of locking screws 431,432, and the second side of the upper clamping member or the second side of the lower clamping member is provided with a locking mechanism for locking or unlocking the upper clamping member and the lower clamping member; with the arrangement, the upper clamping piece and the lower clamping piece can be matched with the shapes of various balance cars, so that the locking mechanism can be suitable for various balance cars; and the locking or unlocking of the man-machine interaction balance car can be controlled through the upper clamping piece, the lower clamping piece and the locking mechanism, so that the locking or unlocking operation is facilitated. In the above alternative embodiment, the upper clamping member and the lower clamping member have limiting surfaces respectively, and the two limiting surfaces are used for locking the balance car by matching with the ring;

in this embodiment, the locking mechanism includes a lever 47 and a bolt 46, one end of the bolt 46 is hinged to one end of the lever 47, the other end of the bolt is hinged to the second side edge of the upper clamping member 41, the second side edge of the lower clamping member 44 is correspondingly provided with a locking groove, the lever is used for driving the bolt 46 to enter the locking groove and rotate the pull-up bolt, the second side edges of the upper and lower clamping members are close to each other to lock the balance car in a ring-locking manner, and the lever 47 is also used for driving the bolt to leave the locking groove to unlock the upper and lower clamping; specifically, one end of the bolt is hinged to one end of the lever through a connecting shaft 45, the connecting shaft 45 is horizontally installed at one end of the lever, one end of the bolt 46 is rotatably connected to the connecting shaft 45, and the bolt can move in two dimensions relative to the lever, that is, the lever can swing up and down and rotate horizontally relative to the bolt; the other end of the bolt is hinged with the second side edge of the upper clamping piece through a connecting shaft 42, the connecting shaft 42 is horizontally arranged on the second side edge of the upper clamping piece, the other end of the bolt is rotatably connected with the connecting shaft 42, and the bolt can move in two dimensions relative to the upper clamping piece, namely can horizontally rotate and swing up and down; the trip bar can drive the bolt and get into the locking groove to the trip bar is rotatory, can make the tip rotate around the bolt, because the trip bar tip is an eccentric circle axle construction, along with the trip bar rotates, the bolt can be driven to the direction motion of keeping away from lower clamping piece, thereby the second side that drives upper clamping piece is close to lower clamping piece is along the second side, preferred two second sides align the butt. The rotation angle of the lever determines the degree of clamping of the upper clamping member and the lower clamping member. The handle end of the pull rod is also provided with a concave surface facing one side of the downward clamping piece, one end of the concave surface is connected with a convex surface facing one side of the downward clamping piece, the pull rod rotates to the second side edge of the lower clamping piece, the upper clamping piece and the lower clamping piece are clamped mutually, the concave surface of the pull rod 47 can accommodate the second side edge of the upper clamping piece, the second side edge of the upper clamping piece and the second side edge of the lower clamping piece, and the convex surface of the pull rod can be just clamped on the second side edge of the upper clamping piece, so that the middle part of.

In this embodiment, the limiting surface 40 is a surface that matches the shape of the human-computer interaction balance vehicle, and the limiting surface can be a surface structure that can lock any part of the human-computer interaction balance vehicle, and can be called a limiting surface, and the shape of the limiting surface can be various, for example, a plane, a curved surface, a circular limiting surface, an inward concave arc limiting surface, or other irregular limiting surfaces. So set up, upper and lower clamping piece can come the ring to lock the middle part of man-machine interaction balance car through spacing face, perhaps other can come the ring to lock other positions through upper and lower clamping piece. The locking mechanism is suitable for a balance car with a position matched with the limiting surface, for example, the man-machine interaction balance car can be provided with a cross rod arranged between two wheels or between two pedals.

Further, in the embodiment of the invention, the distance between the front wheel 3 provided by the invention and the balance car 1 can be adjusted to adapt to riders with different heights and different riding requirements; when one front wheel is pivoted to the front side of the frame as in the present embodiment, the "distance between the front wheel 3 and the balance car 1" herein means: taking the front wheel as a reference base, wherein the distance between the reference base and the balance car is larger than the distance between the front wheel and the balance car; when more than two front wheels are pivoted on the front side of the frame, the "distance between the front wheel 3 and the balance car 1" refers to: and taking one front wheel as a reference datum, and taking the distance between the reference datum and the balance car.

In the specific embodiment of the invention, the distance between the front wheel 3 and the balance car 1 is realized by adjusting the mounting position of the connecting seat on the car frame; specifically, the rear side of the frame is provided with a plurality of groups of mounting parts along the longitudinal extension direction of the frame, the plurality of groups of mounting parts can be arranged in a straight line or staggered in the longitudinal direction, and the distance between the front wheels and the balance car can be adjusted by arranging the frame in the longitudinal direction; as shown in fig. 3, in the present embodiment, the frame 2 includes a main frame 20 and a front frame connected to a front side of the main frame, a handlebar 21 is disposed on the front frame, the main frame 20 is provided with a plurality of sets of mounting portions having different distances from the front wheels, and the connecting seat 5 is selectively mounted on the different mounting portions to adjust a distance between the front wheel 3 and the balance car 1; specifically, in the present embodiment, the main frame 20 has a connecting rod 204 and a transition rod 205 for connecting the connecting rod 204 with the front frame, and the multiple sets of mounting portions are multiple sets of mounting holes a201, 202, 203 that are formed at intervals in the longitudinal extension direction of the connecting rod 204; the connecting seats 5 are arranged in different groups of mounting holes to adjust the distance between the front wheels 3 and the balance car 1; the connecting seat 5 is provided with a mounting hole B corresponding to the mounting hole A; as shown in fig. 6, in the present embodiment, the connecting base 5 is provided with two pairs of mounting holes B (551, 552, 553, 554), wherein one pair of mounting holes B551 and B553 are provided on the connecting base in a left-right direction, and the other pair of mounting holes B552 and B554 are provided on the connecting base in a left-right direction; correspondingly, a set of mounting holes a is arranged as a pair of mounting holes a (e.g., the mounting hole a201 includes a first mounting hole a2011 and a second mounting hole a2012 arranged in pair with the first mounting hole a 2011); when the connecting seat is installed on the frame assembly, a group of mounting holes A are selected according to the use requirements of riders, and then the connecting seat is fixedly connected to the frame through the matching of fasteners with the mounting holes A and the mounting holes B; optionally, the mounting holes a are two spacers penetrating through the rear side of the frame; for example, when the connecting base needs to be connected to the mounting hole a201, the connecting base is locked by the locking screws 1(511, 512) passing through the mounting holes B (551, 553) and the first mounting hole a 2011; a locking screw 2(521, 522) passes through the mounting hole B (552, 554) and the second mounting hole A2012 to be locked; thus, the connecting seat is connected to the mounting hole A201; optionally, the connecting seat 5 forms an inner concave surface 53 for positioning the rear end of the connecting rod 204 therein, avoiding the rear end of the connecting rod protruding outside.

Still further, the height of the handlebar 21 relative to the front wheel 3 can be adjusted to accommodate riders of different heights and riding needs.

In the embodiment of the present invention, as shown in fig. 4, the front frame further includes a head tube 25, and a straight rod 23 and a front fork 27 respectively inserted into the head tube 25 from the upper end and the lower end of the head tube 25, the front wheel 3 is pivotally disposed on the front fork, the upper end of the straight rod 23 is used for connecting the head 22 and the handlebar 21, the straight rod 23 is telescopically inserted into the head tube 25, and the height of the handlebar 21 relative to the front wheel is adjusted by the telescopic movement of the straight rod 23 in the head tube 25;

in the present embodiment, referring to fig. 4, the straight rod 23 has an upper straight rod 231 and a lower straight rod 232 which are abutted against each other, and a chamfer 233 which is matched with each other is formed at the abutment of the upper straight rod 231 and the lower straight rod 232, it can be understood that the chamfer includes a lower chamfer at the bottom of the upper straight rod and an upper chamfer at the top of the lower straight rod, when the lower chamfer at the lower end of the upper straight rod can be staggered and abutted against the upper chamfer at the upper end of the lower straight rod, the upper straight rod and the lower straight rod are matched to widen the straight rod in the head pipe, the widened straight rod can be clamped in the head pipe 25, and when the lower chamfer at the lower end of the upper straight rod is matched and abutted against the upper chamfer at the upper end of the lower straight rod, the straight rod has a radial size in the head pipe which allows it to move up and down in the head pipe, so that when the height of the handlebar needs to be adjusted, the upper straight rod, after the height is adjusted to a preset height, the upper straight rod and the lower straight rod are in staggered butt joint, and the straight rod is integrally clamped in the head pipe; optionally, a driving piece is provided for driving the lower straight rod to move up and down in the head pipe, so that the upper oblique plane of the lower straight rod is enabled to be in matched abutting joint or staggered abutting joint with the upper oblique plane of the upper straight rod; in an embodiment of the present invention, the driving member may be a screw 28, the screw 28 has a head, a cylinder section located in the middle section, and a threaded section located in the bottom section, the head is fastened to the vehicle head, the main body section rotatably penetrates through the vehicle head and the upper straight rod, the threaded section is screwed into the bottom of the lower straight rod, so that the lower straight rod is driven by the adjusting screw to move up and down in the head pipe, and further the oblique plane of the upper straight rod is driven by the adjusting screw to be staggered with or butt-jointed with the oblique plane of the lower straight rod; specifically, when the adjusting screw rod is tight, the lower straight rod can be connected with the upper straight rod in a staggered mode, so that the lower straight rod can be widened in the radial direction of the head pipe and can be used for tensioning the head pipe to fix the head pipe and the head pipe; the structure is adjustable from top to bottom and from left to right, and is suitable for a wide range of people;

optionally, the lower straight rod preferably has a rough outer wall, so that the friction force between the outer wall of the straight rod and the inner wall of the head pipe is increased, and the tightness of the straight rod in the head pipe is enhanced; the rough outer wall can be uneven outer wall or made of anti-friction material, in the embodiment, the lower straight rod can be a tungsten filament head structure, and the tungsten filament head can enhance the fixing strength of the straight rod in the head tube.

Optionally, the straight rod 23 is inserted into the head tube 25 through the ball bowl 24, so as to realize the rotatable function of the handlebar; the upper end of the front fork tube is inserted into the head tube through a ball bowl; in some embodiments of the present invention, the handlebar has a handlebar tube 211 and handle

sleeves

212, 213 inserted into two ends of the handlebar tube; the handlebar tubes are disposed through the handlebar 22.

In another embodiment of the present invention, referring to fig. 6, the frame comprises a main frame and a front frame connected to the front side of the main frame, the rear side of the frame is connected with a balance car, and a function expansion piece is mounted on the frame, the function expansion piece comprises an object carrier 8, so as to solve the problem that the existing balance car is only suitable for playing and can not be used for shopping, and has no storage space; providing a storage space or a carrying function; in the present invention, the term "article" includes living and non-living objects, such as adults, babies, animals, boxes, etc.

Optionally, the carrying piece is arranged on the main frame, so that the practicability is increased while riding is not influenced; the carrying piece is arranged on the main frame, and in one embodiment of the invention, the carrying piece is detachably arranged on the main frame so as to provide a multifunctional riding mode; for example, when the balance car needs to be used as a balance car or used as a drift car, the carrying object can be firstly detached from the main frame, and then the operation of lifting the frame and the front wheels is carried out, so that the problem that the weight of the carrying object causes the labor of a rider for lifting the frame can be avoided; when the combined vehicle is used as a combined vehicle, the carrying piece can be arranged on the main frame.

Optionally, the main frame is provided with a connecting rod 204 and a transition rod 205 for connecting the connecting rod 204 with the front frame, the transition rod 205 is connected to the head pipe 25 through screw nuts 206, 207, and an accommodating space is formed between the connecting rod and the transition rod, or on the non-front-wheel side of the single transition rod, or above the connecting rod for accommodating the loading piece; therefore, the carrying object with strong bearing capacity and large volume can be accommodated; optionally, the shape of the object carrying piece is matched with that of the accommodating space, so that a gap between the accommodating piece and the frame can be avoided, the situation that sundries are accumulated or dangerous to ride can be prevented, and a large accommodating volume can be provided.

In this embodiment, the carrier is fixed to the connecting rod 204; alternatively, the loading piece may be fixedly installed at an installation part formed on the connection rod; for example, a set of mounting holes 201 is selected to mount the object carrying member on the connecting rod, or a plurality of sets of

mounting holes

201, 202, 203 are selected to mount the object carrying member on the connecting rod; (ii) a The installation part can be used for adjusting the distance between the front wheel and the rear wheel assembly such as a balance car, and can be used for installing articles, so that the multifunctional purpose of the installation part is realized.

In this embodiment, the carrier 8 comprises a storage basket, a delivery box, a baby basket or a child seat.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention.

Claims

1. A frame assembly comprising a frame, at least one front wheel pivotally mounted to a front side of the frame, and a swivel connection mounted to a rear side of the frame for rotatably connecting the frame to a balance vehicle such that the ground engaging front wheel can be moved off the ground when the frame is rotated relative to the balance vehicle.

2. A frame assembly according to claim 1, wherein the rotational connection comprises a pivot through which the rear side of the frame is rotatably connected to the balance car.

3. A frame assembly according to claim 2, wherein the rotatable connection comprises a mounting for mounting a balance vehicle, the rear side of the frame being rotatably connected to the mounting by a pivot axis about which the frame can rotate relative to the mounting.

4. A frame assembly according to claim 3, wherein the rotary connection means comprises a connection socket mounted on the rear side of the frame, the connection socket being rotatably connected to the mounting socket by a rotary shaft.

5. A frame assembly according to claim 3, wherein the mounting is a removable structure for removable connection to the balance car.

6. The frame assembly of claim 1, wherein the frame comprises a main frame and a front frame coupled to a front side of the main frame, the front wheel being pivotally mounted to a lower end of the front frame, the front frame having a handle bar at an upper end thereof, the rear side of the main frame being rotatably coupled to the balance car via the rotational coupling mechanism.

7. A frame assembly according to claim 4, wherein the mounting position of the attachment socket on the frame is adjustable so that the distance between the front wheel and the balance car is adjustable.

8. A frame assembly according to claim 6, wherein the height of said handlebar relative to the front wheel is adjustable.

9. The frame assembly of claim 7, wherein the frame comprises a main frame and a front frame connected to the front side of the main frame, the main frame is provided with a plurality of sets of mounting parts with different distances from the front wheels, and the connecting seat is selectively mounted on the different mounting parts to adjust the distance between the front wheels and the balance car.

10. A combination vehicle, characterised in that it comprises a balance vehicle and a frame assembly according to any one of claims 1 to 9.