Handle stem structure and bicycle

Abstract

The utility model discloses a stem structure and a bicycle. The stem structure comprises a stem upper cover, a stem body and a gasket. The end A of the stem upper cover is fixedly connected with the stem body, and the end B of the stem upper cover is detachably connected with the stem body; the gasket is detachably arranged on the inner side of the stem upper cover; compared with the prior art, the strength of connection between the stem body and the stem upper cover is higher; and the assembly process is simpler.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle accessories, in particular to a handle structure. Background Art

[0002] The stem is an important part of a bicycle, also known as the bicycle stem. It is located between the handlebars and the head tube, and plays the role of supporting and connecting the handlebars.

[0003] In the prior art, in order to facilitate the installation of the stem on a straight handlebar or a swing handlebar, the stem body and the stem cover in the stem are both designed as separate parts. During the assembly process, after the stem cover and the stem body are aligned, the stem cover and the stem body are locked together using two pairs of upper and lower fasteners to fix the handlebar. The stem body is the component that connects the handlebar and the riser, and the stem cover is the component that is connected to the stem body to enclose and fix the handlebar.

[0004] The above-mentioned stem structure requires repeated adjustment of the relative positions of the stem cover, the stem body and the handlebars during the assembly process, which makes the assembly process cumbersome and the structural strength of the stem needs to be enhanced. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a handlebar structure and a bicycle that are easy to assemble and have high structural strength.

[0006] The first technical solution adopted by the utility model to solve its technical problem is:

[0007] A stem structure includes a stem upper cover, a stem body, and a gasket;

[0008] The A end of the stem cover is fixedly connected to the stem body, and the B end of the stem cover is detachably connected to the stem body;

[0009] The gasket is detachably arranged on the inner side of the stem upper cover.

[0010] In the stem structure as described above, the gasket is an elastic gasket.

[0011] In the stem structure as described above, the gasket is an arc-shaped gasket that is narrow at both sides and thick in the middle.

[0012] As described above, the stem structure has a notch on one side of the stem upper cover adjacent to the gasket.

[0013] In the stem structure as described above, the length of the gasket is greater than or equal to the length of the stem upper cover.

[0014] The stem structure as described above, wherein the stem body includes a vertical tube end connected to the vertical tube, a handle end connected to the handle, and a connecting portion connecting the vertical tube end and the handle end;

[0015] Along the length direction of the handle, the length of the handle end is greater than the length of the connecting portion.

[0016] In the stem structure as described above, along the length direction of the handle, the connecting portion is connected to the middle portion of the handle end.

[0017] In the stem structure as described above, the B end of the stem upper cover is fixedly connected to the stem body via a fastener.

[0018] In the stem structure as described above, a clearance groove is provided on the side of the B end of the stem cover facing away from the stem body, and the clearance groove is used to hide the fastener under the surface of the stem cover.

[0019] The second technical solution adopted by the present invention to solve its technical problem is:

[0020] A bicycle is characterized by comprising the stem structure described above.

[0021] The beneficial effects of the utility model are:

[0022] Compared with the prior art, the stem body and the A end of the stem cover are fixedly connected, and the fixed connection increases the structural strength of the stem body and the stem cover. When assembling the stem structure in the present invention, the handle is first inserted into the space enclosed between the stem cover and the stem body, and after adjusting to a suitable position, the gasket is inserted between the stem cover and the handle, and then the B end of the stem cover and the stem body are locked. Compared with the prior art, the locking step of the A end of the stem cover is saved, and the assembly process is simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 Schematic diagram of the assembly relationship between the stem structure and the handle in this embodiment;

[0025] Figure 2 2 is a schematic diagram of the three-dimensional structure of the stem structure in this embodiment;

[0026] Figure 3 This is a structural breakdown diagram of the stem structure in this embodiment;

[0027] Figure 4 is a side view of the stem structure in this embodiment;

[0028] Figure 5is a top view of the stem structure in this embodiment;

[0029] The reference numerals are as follows:

[0030] 100-stem structure; 1-stem upper cover; 11-notch; 12-clearance groove; 2-stem body; 21-vertical tube end; 22-handle end; 23-connecting part; 3-gasket; 200-handle. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technical personnel in this field without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the present invention can be combined interactively without conflicting with each other.

[0032] Reference Figure 1 、 Figure 2 , a stem structure 100, comprising a stem cover 1, a stem body 2 and a gasket 3;

[0033] The A end of the stem cover 1 is fixedly connected to the stem body 2, and the B end of the stem cover 1 is detachably connected to the stem body;

[0034] The gasket 3 is detachably arranged on the inner side of the stem upper cover 1 .

[0035] Compared with the prior art, the stem body 2 is fixedly connected to the A end of the stem cover 1. The fixed connection increases the structural strength of the stem body 2 and the stem cover 1, reduces the stress concentration caused by the fastener fixation, and reduces the risk of stem breakage. The stem structure 100 can better withstand various external forces during use, thereby extending the service life and improving the user experience.

[0036] When assembling the stem structure 100 in this embodiment, the handle 200 is first inserted into the space enclosed between the stem cover 1 and the stem body 2, and after adjusting to a suitable position (such as the middle position of the handle 200), the gasket 3 is inserted between the stem cover 1 and the handle 200, and then the B end of the stem cover 1 and the stem body 2 are locked. Compared with the existing technology, the locking step of the A end of the stem cover 1 is saved, and the assembly process is simplified.

[0037] As you can understand, the primary function of the gasket 3 is to fill the gap between the stem 100 and the handle 200, ensuring a stable relative position between the two components. The gasket 3 effectively secures the stem 100 and the handle 200, preventing them from shifting or loosening during use. When the user operates the handle 200, the stem 100 remains in its intended position, ensuring overall structural stability and smooth operation.

[0038] As an example, during installation, the gasket 3 is installed right in front of the handle 200 , and the A end of the stem cover 1 is located right above the handle 200 .

[0039] In one embodiment, the gasket 3 is an elastic gasket. During the process of inserting the gasket 3 between the handle 200 and the stem structure 100, the elastic gasket can undergo a certain degree of deformation, so that the gasket 3 can better adapt to the spatial difference between the handle 200 and the stem structure 100. The gasket 3 can flexibly adjust its shape and size to fill the gap between the handle 200 and the stem structure 100, further improving the convenience during operation, and enhancing the installation efficiency and user experience of the stem structure 100.

[0040] Specifically, the elastic deformation direction of the elastic gasket is along the radial direction of the handle 200 .

[0041] In one embodiment, the gasket 3 is an arc-shaped gasket with narrow sides and a thick middle portion. The thicker middle portion of the arc-shaped gasket can increase the durability of the gasket 3, allowing it to withstand greater pressure and stress without being easily damaged.

[0042] Reference Figure 3 In one embodiment, a notch 11 is provided on the side of the stem cover 1 adjacent to the gasket 3. The notch 11 allows for external observation of the insertion of the gasket 3, assisting in determining whether the gasket 3 is properly installed and whether any deviation occurs during the installation process.

[0043] In one embodiment, the length of the gasket 3 is greater than or equal to the length of the stem cover 1. Ensuring that the gasket 3 can completely cover the inner sidewall of the stem cover can ensure that the gasket 3 provides uniform stress distribution between the stem cover 1 and the stem body 2, reducing local stress concentration on the gasket 3 that may cause damage to the gasket, and reducing the risk of gasket fatigue and damage.

[0044] The looseness between the handlebar 200 and the stem structure 100 due to the volume problem of the gasket 3 during riding is further reduced, thereby further improving the user experience, increasing the stability of the connection between the stem structure 100 and the handlebar 200, and improving the durability of the stem structure 100.

[0045] Reference Figure 5 In one embodiment, the stem body 2 includes a vertical tube end 21 connected to the vertical tube, a handle end 22 connected to the handle, and a connecting portion 23 connecting the vertical tube end 21 and the handle end 22;

[0046] Along the length direction of the handle, the length of the handle end 22 is greater than the length of the connecting portion 23 .

[0047] When the user is riding, the weight of the hand is transferred to the stem structure 100 via the handlebar 200. The longer handle end 22 means that the stem structure 100 has a larger contact area with the handlebar 200, which reduces stress concentration in the stem structure 100 and deformation of the stem structure 100, thereby improving stability and safety during riding.

[0048] Reference Figure 5 Furthermore, along the length of the handlebar, the connecting portion 23 connects to the middle of the handlebar end 22, helping to balance the bicycle's weight distribution and making it easier for the user to maintain control and balance during riding. The stem structure 100 is a critical component of a bicycle, connecting the handlebars and front fork and directly impacting riding safety and controllability. This embodiment reduces deformation of the stem structure 100, ensuring that it maintains good performance over extended use, extending its service life, and improving the overall riding experience.

[0049] Reference Figure 3 In one embodiment, the B end of the stem cover 1 is fixedly connected to the stem body 2 by a fastener, and the tightness between the B end of the stem cover 1 and the stem body 2 can be quickly adjusted, making assembly convenient and quick.

[0050] Specifically, when fasteners are used to fix the B end of the stem cover 1 and the stem body 2, the direction of the fastener head is away from the vertical tube because there is more space on this side. This design makes it easier for the operator or user to disassemble and assemble the stem structure 100 in this embodiment.

[0051] Reference Figure 3 Furthermore, a clearance groove 12 is provided on the side of the B end of the stem cover 1 facing away from the stem body 2. The clearance groove 12 is used to hide the fastener under the surface of the stem cover 1, so that the fastener is flush with the material surface, reducing the protrusions in the appearance and making the product more beautiful.

[0052] Specifically, the fastener is a screw.

[0053] A bicycle includes the stem structure 100 according to any one of the above embodiments. Since the bicycle has the stem structure, it has the beneficial effects of any one of the above embodiments.

[0054] The above is a specific description of the preferred implementation of the present invention, but the invention of the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A stem structure, characterized in that: It comprises a stem upper cover (1), a stem body (2) and a gasket (3); The A end of the stem upper cover (1) is fixedly connected to the stem body (2), and the B end of the stem upper cover (1) is detachably connected to the stem body; The gasket (3) is detachably arranged on the inner side of the stem upper cover (1).

2. The stem structure according to claim 1, wherein: The gasket (3) is an elastic gasket.

3. The stem structure according to claim 1, wherein: The gasket (3) is an arc-shaped gasket with narrow sides and a thick middle.

4. The stem structure according to claim 1, wherein: A notch (11) is provided on one side of the stem upper cover (1) adjacent to the gasket (3).

5. The stem structure according to claim 1, wherein: The length of the gasket (3) is greater than or equal to the length of the stem upper cover (1).

6. The stem structure according to claim 1, wherein: The stem body (2) comprises a vertical tube end (21) connected to the vertical tube, a handle end (22) connected to the handle, and a connecting portion (23) connecting the vertical tube end (21) and the handle end (22); Along the length direction of the handle, the length of the handle end (22) is greater than the length of the connecting portion (23).

7. The stem structure according to claim 6, wherein: Along the length direction of the handle, the connecting portion (23) is connected to the middle portion of the handle end (22).

8. The stem structure according to claim 1, wherein: The B end of the stem upper cover (1) and the stem body (2) are fixedly connected via fasteners.

9. The stem structure according to claim 8, wherein: A clearance groove (12) is provided on the side of the B end of the stem cover (1) facing away from the stem body (2), and the clearance groove (12) is used to hide the fastener under the surface of the stem cover (1).

10. A bicycle, characterized in that: The invention comprises the stem structure as described in any one of claims 1 to 9.

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