阅读说明：本技术 一种儿童自行车限位车头碗 (Limiting head bowl of children bicycle ) 是由 徐利勇 青洵 叶凯望 于 2020-08-19 设计创作，主要内容包括：本发明公开了一种儿童自行车限位车头碗,包括有与前叉上端相螺接的上迫紧,前叉穿置于车头管内,前叉和车头管之间设置有限位上碗,限位上碗和上迫紧之间设置有限位上塞；限位上碗上对称设置有与车头管上端的卡槽相适配的卡块,限位上塞的内周对称凸设有与前叉上部的凹槽相适配的凸起,限位上碗的上部对称设置有限位块,限位块之间形成有转动槽,限位上碗的外周对称设置有限位耳,限位耳置于对应的转动槽内。其优点在于：结构合理、紧凑,能够实现龙头限位,避免了龙头转弯角度过大而造成车身倾覆,大大提高了骑行的安全性。(The invention discloses a limiting head bowl of a child bicycle, which comprises an upper tightening part screwed with the upper end of a front fork, wherein the front fork is arranged in a head tube in a penetrating way; the upper portion symmetry of spacing upper bowl is provided with the stopper, is formed with the rotation groove between the stopper, and the periphery symmetry of spacing upper bowl is provided with spacing ear, and corresponding rotation inslot is arranged in to spacing ear. The advantages are that: reasonable and compact structure, can realize that the tap is spacing, avoid the too big automobile body that causes of tap turn angle to overturn, improved the security of riding greatly.)

1. The utility model provides a spacing headstock bowl of children's bicycle, compels tightly (2) including going up with front fork (1) upper end looks spiro union, front fork (1) wear to arrange in headstock pipe (3), characterized by: a limiting upper bowl (4) is arranged between the front fork (1) and the head tube (3), and a limiting upper plug (5) is arranged between the limiting upper bowl (4) and the upper tightening part (2); spacing upper bowl (4) on the symmetry be provided with fixture block (41) of draw-in groove (31) looks adaptation of locomotive pipe (3) upper end, the protruding arch (51) that are equipped with recess (11) looks adaptation on front fork (1) upper portion of the interior circumference symmetry of spacing upper plug (5), the upper portion symmetry of spacing upper bowl (4) be provided with stopper (42), be formed with between stopper (42) and rotate groove (42a), the periphery symmetry of spacing upper plug (5) be provided with spacing ear (52), spacing ear (52) arrange corresponding rotation groove (42a) in.

2. The child's bicycle limit head cup as set forth in claim 1, wherein: a first inner inclined surface (4a) is formed in the limiting upper bowl (4), and a lower inclined surface (5a) matched with the first inner inclined surface (4a) is formed at the lower part of the limiting upper plug (5).

3. The child's bicycle limit head cup as set forth in claim 2, wherein: the upper packing (2) is internally provided with a second inner inclined plane (2a), and the upper part of the limiting upper plug (5) is provided with an upper inclined plane (5b) matched with the second inner inclined plane (2 a).

4. The child's bicycle limit head cup as set forth in claim 3, wherein: the inclination angles of the lower inclined surface (5a) and the upper inclined surface (5b) are the same.

5. The child's bicycle limit head cup as set forth in claim 4, wherein: the lower part of the upper limiting bowl (4) is provided with a vertical pipe (43), and the vertical pipe (43) extends into the head pipe (3).

6. The child's bicycle limit head cup as set forth in claim 5, wherein: the middle part of the upper limiting bowl (4) is provided with a step surface (4b), and the step surface (4b) is abutted against the upper end surface of the head pipe (3).

7. The child's bicycle limit head cup as set forth in claim 6, wherein: go up the periphery of compeling tight (2) be provided with surrounding edge (21), surrounding edge (21) and second internal inclined plane (2a) between be formed with the cavity, stopper (42) place in the cavity.

8. The child's bicycle limit head cup as set forth in claim 7, wherein: the upper end of the upper tightening part (2) extends inwards to form a flange (22).

9. The child's bicycle limit head cup as set forth in claim 8, wherein: on the front fork (1), the length of the groove (11) is greater than that of the thread section.

10. The child bicycle limiting head bowl as claimed in claim 9, wherein the periphery of the upper packing (2) is provided with a hexagonal wrench surface (2 b).

Technical Field

The invention relates to the technical field of bicycle manufacturing, in particular to a limit head bowl of a child bicycle.

Background

Nowadays, children increasingly enjoy riding bicycles, and the sales volume of the bicycles for the children also rises year by year. With the improvement of economic level, the market demands more and more on the safe reliability of the children bicycle. Because children are small in age and insufficient in control force, the situation that the bicycle body overturns due to unstable gravity center of the bicycle body is often met in the riding process of the children because the steering angle of the steering head is too large, and the children are easily injured by falling once the bicycle body overturns. Therefore, the market derives a strong demand for the rotation angle control of the children bicycle faucet.

Disclosure of Invention

The invention aims to solve the technical problem of providing a limit head bowl of a children bicycle, which has a reasonable and compact structure, can realize the limit of a head and has high safety.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a child bicycle limiting head bowl comprises an upper packing screwed with the upper end of a front fork, the front fork penetrates through a head tube, a limiting upper bowl is arranged between the front fork and the head tube, and a limiting upper plug is arranged between the limiting upper bowl and the upper packing; the upper portion symmetry of spacing upper bowl is provided with the stopper, is formed with the rotation groove between the stopper, and the periphery symmetry of spacing upper bowl is provided with spacing ear, and corresponding rotation inslot is arranged in to spacing ear.

The optimized technical measures further comprise:

a first inner inclined plane is formed in the limiting upper bowl, and a lower inclined plane matched with the first inner inclined plane is formed at the lower part of the limiting upper plug.

The upper packing is internally provided with a second inner inclined plane, and the upper part of the limiting upper plug is provided with an upper inclined plane matched with the second inner inclined plane.

The inclination angles of the lower inclined plane and the upper inclined plane are the same.

The lower part of the upper limiting bowl is provided with a vertical pipe, and the vertical pipe extends into the head pipe.

The middle part of the limiting upper bowl is provided with a step surface which is abutted against the upper end surface of the head pipe.

The periphery of compeling tightly on foretell is provided with the surrounding edge, is formed with the cavity between surrounding edge and the second internal inclined plane, and the stopper is arranged in the cavity.

The upper end of the upper fastening part extends inwards to form a flange.

On the front fork, the length of the groove is larger than that of the threaded section.

The periphery of the upper tightening part is provided with a hexagonal wrench face.

The invention discloses a limiting head bowl of a child bicycle, which is reasonable and compact in structure and comprises a limiting upper bowl, a limiting upper plug and an upper tightening device, wherein the limiting upper bowl is assembled with a head tube through the matching of a clamping block and a clamping groove at the upper end of the head tube, the limiting upper plug is assembled with a front fork through the matching of a protrusion on the inner periphery and a groove on the upper part of the front fork, the upper part of the limiting upper bowl is symmetrically provided with limiting blocks, a rotating groove is formed among the limiting blocks, when the upper tightening device is locked with the front fork through a screw joint, the head bowl is ensured not to generate longitudinal movement, at the moment, a limiting lug is arranged in the corresponding rotating groove, and the limiting blocks limit the rotating angle of the limiting upper plug, so that the phenomenon that the body of the child bicycle topples due to the overlarge rotating angle of a faucet is avoided, the riding safety is greatly.

Drawings

FIG. 1 is a schematic view of an exploded structure of the present invention;

FIG. 2 is a schematic cross-sectional structural view of the present invention;

FIG. 3 is a cross-sectional structural schematic view of another aspect of the present invention;

FIG. 4 is a perspective view of the upper bowl of FIG. 1;

FIG. 5 is a perspective view of the upper bowl of FIG. 1 from another perspective;

FIG. 6 is a perspective view of the stopper upper plug of FIG. 1;

FIG. 7 is a perspective view of the stopper plug of FIG. 1 from another perspective

FIG. 8 is a top packing perspective view of FIG. 1;

fig. 9 is a perspective view of fig. 1 from another perspective.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 9, which are schematic structural views of the present invention,

wherein the reference numerals are: the front fork comprises a front fork 1, a groove 11, an upper tightening 2, a second inner inclined surface 2a, a hexagonal wrench surface 2b, a surrounding edge 21, a retaining edge 22, a head pipe 3, a clamping groove 31, a limiting upper bowl 4, a first inner inclined surface 4a, a step surface 4b, a clamping block 41, a limiting block 42, a rotating groove 42a, a vertical pipe 43, a limiting upper plug 5, a lower inclined surface 5a, an upper inclined surface 5b, a protrusion 51 and a limiting lug 52.

As shown in figures 1 to 9 of the drawings,

a children bicycle limit head bowl comprises an upper packing 2 in threaded connection with the upper end of a front fork 1, wherein the front fork 1 penetrates into a head tube 3, a limit upper bowl 4 is arranged between the front fork 1 and the head tube 3, and a limit upper plug 5 is arranged between the limit upper bowl 4 and the upper packing 2; the limiting upper bowl 4 is symmetrically provided with clamping blocks 41 matched with clamping grooves 31 at the upper end of the head pipe 3, the inner circumference of the limiting upper plug 5 is symmetrically and convexly provided with protrusions 51 matched with grooves 11 at the upper part of the front fork 1, the upper part of the limiting upper bowl 4 is symmetrically provided with limiting blocks 42, rotating grooves 42a are formed between the limiting blocks 42, the outer circumference of the limiting upper bowl 4 is symmetrically provided with limiting lugs 52, and the limiting lugs 52 are arranged in the corresponding rotating grooves 42 a.