TWM648269U - Lower cover of bicycle head bowl - Google Patents

Abstract

This invention is a front bowl lower cover, wherein: the front bowl lower cover is annular and includes a connected wide diameter section and a narrow diameter section. The outer wall of the narrow diameter section is connected with positioning ribs extending up and down, and the inner wall of the bottom of the narrow diameter section There is a ring-shaped component part connected to it. Since this creation has positioning ribs that protrude outward, the user only needs to process the corresponding positioning grooves on the inner wall of the head tube, or purchase a head tube that already has positioning grooves, so that the positioning ribs can be placed in the positioning grooves to limit The possibility of the lower cover of the front bowl rotating relative to the head tube improves the problem that there is no limiting structure in any direction of rotation between the lower cover of the front bowl and the head tube on the market.

Description

Front bowl lower cover

This invention relates to a lower cover of the headpiece, which is a component of the headset. It is arranged on the top of the head tube and is used to place the bearing (bearing).

The bicycle is an excellent means of transportation. Its kinetic energy comes from manual pedaling. It does not need to consume electricity or fuel. It has excellent functions such as environmental protection and physical fitness. It is generally used for transportation, competitions, sports, etc. Each component of a bicycle is very important. Whether it is the pursuit of riding comfort, stability of the body, or competitive ability, the quality and structure of each component must be pursued.

Among them, the headset is a very important component for bicycle steering control. It is set above the head tube and has a built-in bearing, so that the rider can perform steering operations more smoothly and smoothly. However, there are many other components on the market. There are still some defects that have not been improved in the improvement of the headset. One of them is the lower cover of the headset. Generally, when installing the headset, the lower cover of the headset is first placed on the top of the head tube, and then the bearing is installed. It is placed on the lower cover of the front bowl. However, the current lower cover of the front bowl on the market does not have any rotation direction limit structure between the head tube. Therefore, when the rider swings the handlebar with too much force while traveling, there is a chance that the handlebar will be damaged. The lower cover of the front bowl rotates relative to the head tube. In addition, when installing a fixed head set, the lower cover of the front bowl rotates relative to the head tube, making installation more difficult.

In view of the above, it can be seen that it is necessary to improve the structure of the lower cover of the front bowl to make it less likely to deflect relative to the head tube.

The lower cover of the head tube of this invention has outwardly protruding positioning ribs in the narrow diameter section, so the user only needs to process the corresponding positioning grooves on the inner wall of the head tube, or purchase a head tube that already has positioning grooves. The positioning ribs are placed in the positioning grooves to limit the possibility of the head bowl lower cover rotating relative to the head tube, thus improving the problem of the limiting structure in the market that does not have any direction of rotation between the head bowl lower cover and the head tube.

In order to achieve the above purpose and effect, the invention provides a lower cover of the front bowl, wherein: the lower cover of the front bowl is annular and includes a connected wide diameter section and a narrow diameter section, and the outer wall of the narrow diameter section is connected with an up and down extension. There is a positioning rib, and an annular placement part is connected to the inner wall surface of the bottom of the narrow diameter section.

Further, the lower cover of the head tube is arranged on the head tube, the inner wall surface of the top of the head tube has a positioning groove corresponding to the positioning rib, the positioning rib is located in the positioning groove, the narrow diameter section is located in the head tube, and the wide The diameter section abuts the top of the head tube.

Further, the outer wall surface of the lower end of the narrow diameter section is inwardly contracted.

Furthermore, there is an annular leading angle between the retracted portion and the non-retracted portion of the outer wall surface of the narrow diameter section.

Further, the lower section of the positioning rib is provided with a guide surface on the outer side, and the inclination direction of the guide surface is gradually inclining from top to bottom toward the inside.

Furthermore, the lower section of the positioning rib is provided with a guide surface on the outside, and the inclination direction of the guide surface is gradually inclining from top to bottom toward the inside. The guide surface is connected to the outer wall surface of the annular guide angle and has the same inclination angle.

Further, the connection point between the placement part and the inner wall surface of the narrow diameter section has an inclined surface.

Further, the outer wall surface of the positioning rib is arc-shaped.

In order to understand the implementation of this invention in more detail, please also view it with the diagram. As shown in the first picture, this invention is a front bowl lower cover 1, wherein: the front bowl lower cover 1 is annular and includes connected There is a wide diameter section 11 and a narrow diameter section 12. The outer wall of the narrow diameter section 12 is connected with a positioning rib 13 extending up and down. The inner wall of the bottom of the narrow diameter section 12 is connected with an annular placement part 15.

Continuing with the above content, the implementation of the invention is further described in detail. When actually using the invention, the user only needs to process the corresponding positioning groove 21 on the inner wall of the head tube 2 of the bicycle, or purchase a head tube that already has the positioning groove 21. 2, the positioning rib 13 can be placed in the positioning groove 21 to limit the possibility of the front bowl lower cover 1 rotating relative to the head tube 2, for example, as shown in the third and fourth figures, an example of a head tube matching the positioning rib 13 2 mode, in which the inner wall surface of the top of the head tube 2 has a positioning groove 21 corresponding to the positioning rib 13. When the headset 100 (for examples of components included in the headset 100, please refer to the fifth figure) is placed behind the head tube 2 , as shown in Figures 6 to 8, the placement part 15 is used to place the bearing 200, and the positioning rib 13 is located in the positioning groove 21, the narrow diameter section 12 is located in the head tube 2, and the wide diameter Section 11 is against the top of the head tube 2, so that since the positioning rib 13 is limited by the positioning groove 21, it is difficult for the head bowl lower cover 1 to rotate relative to the head tube 2, which really improves the relationship between the front bowl lower cover and the head tube on the market. There is no problem of limiting structure in any direction of rotation between the tubes, and the invention is indeed novel and progressive.

In addition, in this invention, the actual number of the positioning ribs 13 of the lower cover of the front bowl 1 and the positioning grooves 21 of the head tube 2 can be changed according to the needs. The minimum requirement is one positioning rib 13 and one positioning groove 21. In this embodiment, The number of each of the positioning ribs 13 and the positioning grooves 21 is two, as an example.

As shown in the seventh figure, the outer wall of the lower end of the narrow-diameter section 12 is inwardly contracted, which makes it easier to insert the narrow-diameter section 12 into the head tube 2 .

As shown in the first figure, there is an annular angle 16 between the retracted portion and the non-retracted portion of the outer wall surface of the narrow-diameter section 12. In this way, when the narrow-diameter section 12 is placed into the head tube 2, even if the annular The guide angle 16 contacts the inner edge of the top of the head tube 2 and the narrow diameter section 12 can be smoothly placed into the head tube due to the guidance of the annular guide angle 16 .

As shown in the first and seventh figures, the lower section of the positioning rib 13 has a guide surface 14 on the outside. The inclination direction of the guide surface 14 is gradually tilted inward from top to bottom, and the guide surface 14 Connected to the outer wall of the annular guide angle 16 and having the same inclination angle, this structure can make the process of placing the positioning rib 13 in the positioning groove 21 smoother and easier.

As shown in the seventh figure, the connection point between the placement part 15 and the inner wall surface of the narrow diameter section 12 has an inclined surface 17. This inclined surface 17 helps the bearing 200 to be placed more easily and stably.

As shown in the first figure, the outer wall surface of the positioning rib 13 is arc-shaped. The purpose of this structure is to improve the smoothness of the positioning rib 13 being inserted into the positioning groove 21 and taken out from the positioning groove 21 to further improve the ease of disassembly and assembly. Smoothness.

The above is only used to explain the preferred embodiments of the present invention, and is not intended to limit the present invention in any form. Therefore, any modifications related to the present invention that are made in the same creative spirit are not allowed. Or changed into other forms that can be implemented and have the same effect, they should still be included in the scope of protection intended by this creative work.

To sum up, the "head bowl lower cover" created by this creation is indeed fully in line with the needs of industrial development in terms of practicality and cost-effectiveness, and the structural creation disclosed is also an unprecedented innovative structure, so it has " There should be no doubt about "novelty", and this invention can be more effective than the conventional structure, so it is also "progressive". It fully complies with the requirements for application for new type patents in my country's patent law, and a patent application is filed in accordance with the law. And we sincerely request Jun Bureau to review it as soon as possible and give it affirmation.

1: Lower cover of front bowl 11:Wide diameter section 12: Narrow diameter section 13: Positioning rib 14:Guide surface 15: Parts Department 16: Annular chamfer 17: Incline 2:Head tube 21: Positioning slot 100:Headset 200:Pelin

The first picture is a three-dimensional schematic diagram of this creation. The second picture is a schematic diagram of this creation from another perspective. The third picture is a schematic diagram of a riser with positioning grooves. The fourth picture is another perspective view of a riser with positioning grooves. The fifth picture is an exploded schematic diagram of the riser and headpiece assembly. The sixth picture is a schematic diagram of the combination of the riser and the headset. The seventh figure is a schematic cross-sectional view of line segment VII-VII in the sixth figure. The eighth figure is a schematic cross-sectional view of line segment VIII-VIII in the sixth figure.

1: Lower cover of front bowl

11:Wide diameter section

12: Narrow diameter section

13: Positioning rib

14:Guide surface

15: Parts Department

16: Annular chamfer

Claims (8)

A lower cover for a front bowl, wherein: The lower cover of the front bowl is annular and includes a connected wide-diameter section and a narrow-diameter section. The outer wall of the narrow-diameter section is connected with a positioning rib extending up and down. The inner wall of the bottom of the narrow-diameter section is connected with an annular rib. A component department. The lower cover of the front bowl of claim 1, wherein the lower cover of the front bowl is arranged on the head tube, and the inner wall surface of the top of the head tube has a positioning groove corresponding to the positioning rib, the positioning rib is located in the positioning groove, and the narrow The diameter section is located in the head tube, and the wide diameter section is against the top of the head tube. The lower cover of the front bowl of claim 1, wherein the outer wall surface of the lower end of the narrow diameter section is inwardly contracted. The lower cover of the front bowl of claim 1, wherein there is an annular leading angle between the retracted portion and the non-retracted portion of the outer wall surface of the narrow diameter section. The lower cover of the front bowl of claim 1, wherein the lower section of the positioning rib is provided with a guide surface on the outside, and the inclination direction of the guide surface is to gradually incline inward from top to bottom. The lower cover of the front bowl of claim 4, wherein the lower section of the positioning rib is provided with a guide surface on the outer side, and the inclination direction of the guide surface is gradually tilted inward from top to bottom, and the guide surface is connected with the annular guide surface. The outer walls of the corners are connected and have the same inclination angle. The lower cover of the front bowl of claim 1, wherein the connection between the mounting part and the inner wall surface of the narrow diameter section has an inclined surface. The lower cover of the front bowl of claim 1, wherein the outer wall of the positioning rib is arc-shaped.

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