阅读说明：本技术 立柱高度可调的儿童滑板车 (Children scooter with adjustable height of upright post ) 是由 孔正华 张炜 赵留海 王凯 于 2019-12-02 设计创作，主要内容包括：本发明公开了一种立柱高度可调的儿童滑板车,包括车把组件、立柱、前轮、连接轴、后轮和底座,立柱包括上立柱和下立柱,上立柱的下部和下立柱的上部之间通过快拆结构连接,通过改变快拆上通孔的形状并匹配形状相适应的螺栓,使螺栓与卡接环之间不能相对转动。本发明一是保证手柄每次都能转至相同且转到锁紧位置；二是,避免在长时间使用颠簸过程中螺栓松动的可能性；三是,通过设置一圈夹持齿,相较于通过整圈的内侧面与立柱接触锁紧的情况,前者能够增加夹持力或摩擦力,从而提高锁紧效果,上述均可消除使用者使用滑板车时存在的安全隐患,保障使用者操作的可靠性和使用的安全性。(The invention discloses a -type upright-height-adjustable child scooter which comprises a handlebar assembly, uprights, a front wheel, a connecting shaft, a rear wheel and a base, wherein each upright comprises an upper upright and a lower upright, the lower part of each upper upright is connected with the upper part of each lower upright through a quick-release structure, and the bolts and clamping rings cannot rotate relatively by changing the shape of a quick-release upper through hole and matching bolts with adaptive shapes.)

child scooter with adjustable stand height, which is characterized in that the scooter comprises a handlebar assembly (1), a stand (2), a front wheel (3), a connecting shaft (4), a rear wheel (5) and a base (6), wherein the handlebar assembly is installed at the upper end of the stand, the base is installed at the lower end of the stand, the connecting shaft is installed at the front end of the base, the front wheel is installed at two ends of the connecting shaft respectively, the rear wheel is installed at the rear end of the base,

the upright post comprises an upper upright post (21) and a lower upright post (22), the lower part of the upper upright post is connected with the upper part of the lower upright post through a quick-release structure (7), the quick-release structure comprises a handle (71), a bolt (72) and a clamping ring (73), the clamping ring is provided with an opening (731), the clamping ring comprises a connecting part (732) close to the handle and a second connecting part (733) far away from the handle, the connecting part is provided with a through hole (7321), the second connecting part is provided with a second through hole (7331), the end of the bolt is rotatably connected with the handle, and the other end of the bolt penetrates through the through hole and the second through hole;

the bolt is provided with a -th rod section (721) at a position corresponding to the -th through hole, a second rod section (722) at a position corresponding to the second through hole, the -th rod section or the second rod section is a positioning section which is matched with the limiting through hole and has a non-circular cross section, and the positioning section penetrates through the limiting through hole and stops rotating;

the inner ring of the upper edge of the clamping ring is provided with a clamping part, and the clamping part is a plurality of clamping teeth (734) which are arranged at intervals and used for increasing the clamping force.

2. The children's scooter with adjustable upright height of claim 1, wherein: the clamping teeth are wedge-shaped teeth or rectangular teeth.

3. The children's scooter with adjustable upright height of claim 1, wherein: the inner side surface of the clamping tooth is an arc surface matched with the outer surface of the upper upright post.

4. The children's scooter with adjustable upright height of claim 1, wherein: the handlebar assembly comprises a transverse handle (11) and a handle sleeve (12), and the handle sleeve is arranged at two ends of the transverse handle.

5. The children's scooter with adjustable upright height of claim 4, wherein the handlebar is a hollow tube, the handlebar has th air holes (111) corresponding to the position where the handlebar sheath is installed, the handlebar sheath has second air holes (121), the aperture sizes of the th air holes and the second air holes are , the hole distance (D1) of the th air holes is larger than the aperture of the th air holes, and the hole distance (D2) of the second air holes is also larger than the aperture of the second air holes.

6. The children's scooter with adjustable upright height of claim 1, wherein: the limiting through hole is a square hole.

7. The children's scooter with adjustable upright height of claim 1, wherein: the quick-release structure further comprises a nut (735) for locking the bolt, and the bolt is provided with a thread matched with the nut.

8. The children's scooter with adjustable upright height of claim 1, wherein: the second through hole is a limiting through hole, and the second rod section is a positioning section.

Technical Field

The invention belongs to the technical field of mechanical products, and particularly relates to types of scooters.

Background

The scooter is a novel product form of scooter motion following the traditional scooter, which is simple labor-saving motion machines, the children scooter is a children motion entertainment tool, which is more popular, children especially children 3-5 years old grow faster, therefore the height of the scooter is required to be adjusted, the existing locking structure for adjusting the scooter is mainly divided into a screw locking structure and a quick-release structure, the former is troublesome and can be adjusted by means of tools, the latter adopts a plurality of quick-release structures, the quick-release structure comprises threaded bolts, nuts for locking the bolts and handles installed on the bolts, the quick-release structure utilizes the principle of the cams to be mainly characterized in that the handles are used for primarily fixing the bolts, rotating shafts of the quick-release handles penetrate through holes in the bolt heads and can rotate relative to the bolts, the root parts of the handles are shaped into cams, and the cams are matched with handle seats, when the handles are in an opening state, the cams are in a minimum diameter state, and when the handles are rotated to a closing state, the cams are in a maximum diameter state, thereby achieving the purpose of locking.

However, the locking force of the current quick-release structure is insufficient, and after the locking, especially a child slips on the uneven ground or hollow ground, the bolt is easy to loose after a long time, the quick-release structure has the possibility of loosening, the risk that the scooter starts to be used when the handle is not rotated to the locking position exists, and the potential safety hazard of is existed.

Disclosure of Invention

The invention mainly solves the technical problem of providing child scooters with height-adjustable upright columns, which can realize the height adjustment of the scooter, increase the locking force of the scooter through the design of a quick-release structure, solve the problem that the quick-release structure can be loosened after being used for a long time and improve the safety.

In order to solve the technical problems, technical schemes adopted by the invention are to provide a upright post height-adjustable child scooter, which comprises a handlebar assembly, upright posts, a front wheel, a connecting shaft, a rear wheel and a base, wherein the handlebar assembly is arranged at the upper ends of the upright posts, the base is arranged at the lower ends of the upright posts, the connecting shaft is arranged at the front end of the base, the front wheel is respectively arranged at two ends of the connecting shaft, the rear wheel is arranged at the rear end of the base,

the quick-release structure comprises a handle, a bolt and a clamping ring, the clamping ring is provided with an opening and comprises a th connecting part close to the handle and a second connecting part far away from the handle, the connecting part is provided with a th through hole, the second connecting part is provided with a second through hole, the end of the bolt is rotatably connected with the handle, and the other end of the bolt penetrates through the th through hole and the second through hole;

the bolt is provided with a -th rod section at a position corresponding to the -th through hole, a second rod section at a position corresponding to the second through hole on the bolt, a -th rod section or a -th rod section is a positioning section which is matched with the limiting through hole and has a non-circular cross section, and the positioning section penetrates through the limiting through hole and stops rotating;

the inner ring of the upper edge of the clamping ring is provided with a clamping part, and the clamping part is a plurality of clamping teeth which are arranged at intervals and used for increasing the clamping force.

, the gripping teeth are wedge shaped teeth or rectangular teeth.

, the inner side of the holding tooth is a circular arc surface matching with the outer surface of the upper upright post

, the handlebar assembly includes a handlebar and a handlebar sleeve mounted to both ends of the handlebar.

, the handlebar is a hollow tube, the handlebar has a plurality of rows of air holes corresponding to the positions where the handlebar cover is installed, the handlebar cover has a plurality of rows of second air holes, the sizes of the th air holes and the second air holes are , the hole distance of the th air holes is larger than the hole diameter of the th air holes, and the hole distance of the second air holes is also larger than the hole diameter of the second air holes.

, the limiting through hole is a square hole.

, the quick release structure further comprises a nut for locking the bolt, and the bolt is provided with a thread matching with the nut.

, the second through hole is a limit through hole, and the second rod section is a positioning section.

The invention has the beneficial effects that:

the scooter comprises a handlebar assembly, an upright post, a front wheel, a connecting shaft, a rear wheel and a base, wherein the upright post comprises an upper upright post and a lower upright post, the lower part of the upper upright post is connected with the upper part of the lower upright post through a quick-release structure, the bolt and a clamping ring cannot relatively rotate by changing the shape of a quick-release upper through hole and matching the shape with a bolt, ensures that a handle can rotate to the same position and rotate to a locking position every time;

furthermore, the transverse handle can be a hollow pipe, the position of the transverse handle corresponding to the handle sleeve is provided with a plurality of rows of th air holes, the handle sleeve is provided with a plurality of rows of second air holes, the aperture sizes of the th air holes and the second air holes are , the hole spacing of the th air holes is larger than that of the th air holes, and the hole spacing of the second air holes is also larger than that of the second air holes.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of a quick release structure of the present invention;

FIG. 2 is an external view of the present invention;

FIG. 3 is a schematic view of the structure at the opening of the snap ring of the present invention;

FIG. 4 is a schematic structural view of the bolt of the present invention;

FIG. 5 is an exploded view of the handlebar and grip cover of the present invention (the arrow indicates the direction of insertion of the grip cover);

FIG. 6 is a second developed view of the handlebar and handlebar grip of the present invention (arrows indicate the direction of insertion of the grip);

the parts in the drawings are marked as follows:

handlebar assembly 1, handlebar 11, th through hole 111, handlebar sleeve 12, second through hole 121, upright 2, upper upright 21, lower upright 22, front wheel 3, connecting shaft 4, rear wheel 5, base 6, quick release structure 7, handle 71, bolt 72, th through hole 7321, snap ring 73, opening 731, th connecting part 732, second connecting part 733, second through hole 7331, th rod section 721, second rod section 722, clamping tooth 734, nut 735, hole spacing D1 of th through hole, and hole spacing D2 of second through hole.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and the present invention will be described in detail with reference to the accompanying drawings. The invention may be embodied in other different forms, i.e. it is capable of various modifications and changes without departing from the scope of the invention as disclosed.