Front fork waterproof bowl set and bicycle

Abstract

The utility model relates to a front fork waterproof bowl group and a bicycle, the front fork waterproof bowl group is installed and used in cooperation with a head tube and a front fork vertical tube of a bicycle frame, the front fork waterproof bowl group comprises two waterproof bowl groups, and the two waterproof bowl groups are sleeved on the front fork vertical tube and symmetrically arranged at two free ends of the head tube; the waterproof bowl set comprises a steel bowl, a second check ring is fixed to the inner wall of the first end of the steel bowl, and a first check ring is embedded in the inner wall, close to the second end, of the steel bowl; the ball bearing is assembled in the first end of the steel bowl and located between the first check ring and the second check ring; an outer stopper; the free end of the head pipe abuts against the second end of the steel bowl, the first end of the outer blocking piece abuts against the second horizontal plane of the second check ring, and the annular outer wall face of the outer blocking piece and the annular inner wall face of the first check ring are assembled in a tight contact mode so that the ball bearing can be waterproof and dustproof. The utility model can effectively prevent water and dust for the bowl group, improve the rotation smoothness and prolong the service life of the bowl group.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a front fork waterproof bowl set and a bicycle. Background Art

[0002] The front end of the existing bicycle frame has a head tube for assembling the front fork, the upper part of the front fork is provided with a front fork riser, the handlebar of the bicycle is provided with a handlebar riser that is tightened and plugged into the upper end of the front fork riser, the front fork riser passes through the head tube from bottom to top and is sleeved into the handlebar riser, but a bowl set needs to be arranged between the head tube and the front fork riser and between the head tube and the handlebar riser to reduce the rotational friction resistance.

[0003] At present, the headset is generally waterproofed by adding a rubber gasket at the connection of the headset, but the rubber gasket can only play a simple sealing role, and will wear and age after a period of use, and the waterproof and dustproof effect is limited. Water and dust can easily enter the headset, causing the bearings in the headset to rust, resulting in abnormal rotation and transmission. To this end, we propose a front fork waterproof headset and a bicycle. Summary of the invention

[0004] The embodiments of the present application provide a waterproof headset fork and a bicycle, so as to at least solve the problem that the headset in the prior art has limited waterproof and dustproof effects, water and dust can easily enter the headset and cause the bearings in the headset to rust, resulting in abnormal rotation noise and smooth transmission.

[0005] In a first aspect, an embodiment of the present application provides a front fork waterproof headset, which is installed and used with a head tube and a front fork riser of a bicycle frame, and includes two waterproof headsets, which are sleeved on the front fork riser and symmetrically arranged at two free ends of the head tube; the waterproof headset includes:

[0006] A steel bowl having a first end and a second end, wherein the inner diameter of the first end is smaller than the inner diameter of the second end, the first end is embedded in the free end of the head pipe, a second retaining ring is fixed on the inner wall of the first end, and a first retaining ring is embedded on the inner wall close to the second end;

[0007] A ball bearing, mounted inside the first end of the steel bowl and located between the first retaining ring and the second retaining ring;

[0008] An outer stopper, which is annular and has a first end which is inserted and assembled from the second end of the steel bowl and abuts against the ball bearing so as to rotate freely with the steel bowl;

[0009] The free end of the head pipe abuts against the second end of the steel bowl, the first end of the outer member abuts against the second horizontal plane of the second retaining ring, and the annular outer wall surface of the outer member is assembled in tight contact with the annular inner wall surface of the first retaining ring to prevent the ball bearing from being waterproof and dusty.

[0010] In some embodiments, an upper retaining ring is sleeved on the outer retaining member located at the upper end of the front fork stem, and the upper retaining ring closes the annular gap formed between the outer retaining member and the second end of the steel bowl to prevent water and dust from entering the ball bearing built into the steel bowl.

[0011] In some embodiments, a side of the second retaining ring facing the second end of the steel bowl is integrally formed with a plurality of coaxially arranged first lips. During assembly, the first lips are deformed by force to close the connection between the outer retaining member and the second retaining ring.

[0012] In some of the embodiments, at least one second lip is formed on the annular inner wall of the first retaining ring, and the second lip is assembled in tight contact with the annular outer wall of the outer retaining member.

[0013] In some embodiments, a fastener is further provided at the upper end of the waterproof headset located at the upper end of the front fork riser, and the fastener includes:

[0014] An upper fixing ring, which has a first external octagonal step formed on the outside and a first internal threaded surface formed on the inside, and the first external octagonal step cooperates with a tool to thread the upper fixing ring through the first internal threaded surface and the external threaded surface preset on the front fork stem;

[0015] A collar gasket is arranged between the upper fixing ring and the waterproof bowl assembly at the upper end to prevent loosening.

[0016] In some embodiments, a trapezoidal ring is mounted on the upper end of the upper fixing ring, and the inner wall surface of the trapezoidal ring is in close contact with the annular outer wall surface of the handlebar stem and closes the upper end surface of the front fork stem.

[0017] In some embodiments, the outer stopper located at the upper end of the front fork riser also includes:

[0018] A second internal thread surface formed on the inner wall surface of the outer member;

[0019] A second outer octagonal step is formed on the outer wall surface of the second end of the outer stopper to cooperate with a tool to threadably assemble the second inner thread surface with the outer thread surface.

[0020] In some embodiments, the steel bowl comprises:

[0021] A bowl-shaped body having a first end and a second end, wherein the first end and the second end are axially connected, the inner diameter of the first end is smaller than the inner diameter of the second end, and the first end is embedded in the free end of the head pipe;

[0022] An extended rib is integrally formed on the outer side of the second end of the bowl-shaped body so as to be positioned and abutted against the free end of the head pipe;

[0023] An annular receiving groove is provided on the inner wall of the bowl-shaped body close to the second end to match and embed the first retaining ring;

[0024] A fixed step surface is integrally formed on the hole wall of the first end of the bowl-shaped body.

[0025] In some embodiments, an annular assembly groove is formed on the annular outer wall of the second retaining ring, and the annular assembly groove is fixedly assembled on an annular step integrally formed on the inner wall of the first end of the bowl-shaped body.

[0026] In a second aspect, an embodiment of the present application provides a bicycle comprising the waterproof front fork headset assembly described in the first aspect.

[0027] Compared with the related art, the front fork waterproof headset and bicycle provided by the embodiment of the present application have at least the following technical effects:

[0028] By assembling the upper and lower parts of the waterproof headset, the rotational friction resistance between the head tube and the front fork seat tube can be effectively reduced, and the structural design of the waterproof headset can effectively prevent the ball bearing assembled in the steel bowl from being waterproof and dusty, preventing moisture from entering the interior of the headset, thereby extending the service life of the headset, keeping the ball bearing working smoothly for a long time, and improving the smoothness of rotation.

[0029] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a three-dimensional assembly structure diagram of a front fork waterproof headset according to an exemplary embodiment.

[0032] Figure 2 The figure is a half-section view of an assembled waterproof headset for a front fork according to an exemplary embodiment.

[0033] Figure 3 yes Figure 2 A magnified schematic diagram of the structure in the middle.

[0034] Figure 4 yes Figure 2 A magnified schematic diagram of structure B in the middle.

[0035] Figure 5 The figure is a cross-sectional view of an exploded half side of an upper waterproof bowl assembly according to an exemplary embodiment.

[0036] Description of reference numerals:

[0037] Head pipe 10, collar gasket 20, upper fixing ring 30, first internal thread surface 301, first external octagonal step 302, trapezoidal ring 303, waterproof bowl assembly 40, steel bowl 401, extended rib 4011, annular mounting groove 4012, annular step 4013,

[0038] Ball bearing 402 , outer stopper 403 , ball groove 4031 , second inner thread surface 4032 , second outer octagonal step 4033 , first stop ring 404 , second stop ring 405 , upper stop ring 406 , front fork riser 50 , and handlebar riser 60 . DETAILED DESCRIPTION

[0039] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the related art, the current headset waterproofing is generally achieved by adding rubber gaskets at the joints of the headset, but the rubber gaskets can only play a simple sealing role and will wear and age after a period of use. The waterproof and dustproof effects are limited. Water and dust can easily enter the headset and cause the bearings in the headset to rust, resulting in abnormal rotation noise and smooth transmission.

[0043] Based on the above situation, an embodiment of the utility model provides a front fork waterproof headset and a bicycle, which are described in detail below in conjunction with specific embodiments and drawings.

[0044] Embodiment 1, the embodiment of the utility model provides a waterproof headset for a front fork. Figure 5 is a diagram showing the assembly of a waterproof headset for a front fork according to an exemplary embodiment. Figure 5 The front fork waterproof bowl set is installed and used with a head tube 10 and a front fork riser 50 of a bicycle frame; specifically, the bicycle frame is provided with a head tube 10, and the handlebars of the bicycle are provided with a handlebar riser 60 which is plugged and fixed to the upper end of the front fork riser 50. The front fork riser 50 passes through the head tube 10 from bottom to top and is inserted into the lower end of the handlebar riser 60 for tightening. The front fork waterproof bowl set of the utility model is divided into an upper waterproof bowl set and a lower waterproof bowl set. Both the upper waterproof bowl set and the lower waterproof bowl set are sleeved on the front fork riser 50, and the lower waterproof bowl set is located between the lower end of the head tube 10 and the bottom end of the front fork riser 50, and the upper waterproof bowl set is located at the connection between the upper end of the head tube 10 and the handlebar riser 60.

[0045] Figure 1 It is a three-dimensional assembly structure diagram of a front fork waterproof headset according to an exemplary embodiment. Figure 2 FIG. 1 is a half-section view of an assembly of a waterproof headset for a front fork according to an exemplary embodiment. Figure 1-2 As shown, the front fork waterproof headset assembly includes two waterproof headset assemblies 40, which are sleeved on the front fork riser 50 and symmetrically arranged between the lower end of the head tube 10 and the bottom end of the front fork riser 50, and between the upper end of the head tube 10 and the handlebar riser 60;

[0046] Figure 3 yes Figure 2 See attached for an enlarged schematic diagram of the structure A. Figure 1-3 , the lower waterproof bowl set 40 includes:

[0047] The steel bowl 401 has a first end and a second end. The inner diameter of the first end is smaller than that of the second end. The first end is embedded in the free end of the head pipe 10. A second retaining ring 405 is fixed on the inner wall of the first end. A first retaining ring 404 is embedded on the inner wall near the second end.

[0048] Specifically, the steel bowl 401 includes: a bowl-shaped main body, which has a first end and a second end, and the first end and the second end are axially connected, the inner diameter of the first end is smaller than the inner diameter of the second end, and the first end is embedded in the free end of the head pipe 10; an extended rib 4011, which is integrally formed on the outer side of the second end of the bowl-shaped main body to position and abut against the free end of the head pipe 10; an annular mounting groove 4012, which is opened on the inner wall of the bowl-shaped main body near the second end to match the embedded first retaining ring 404; a fixed step surface 4013, which is integrally formed on the hole wall of the first end of the bowl-shaped main body.

[0049] Optionally, an annular assembly groove is provided on the annular outer wall of the second retaining ring 405, and the annular assembly groove is fixedly assembled on an annular step 4013 integrally formed on the inner wall of the first end of the bowl-shaped body.

[0050] The ball bearing 402 is assembled inside the first end of the steel bowl 401 and is located between the first retaining ring 404 and the second retaining ring 405; it can be understood that the ball cage of the ball bearing 402 is made of nylon, which will not rust, can solve the waterproof problem and has a better rotation effect, and the ball bearing 402 is coated with grease, which can withstand low temperatures below 20 degrees Celsius without solidifying and high temperatures above 120 degrees Celsius without losing. The grease is purchased from the market and the model is 501TSHY.

[0051] The outer stopper 403 is annular and has a ball groove 4031 formed on the annular outer wall of the first end thereof. One end of the outer stopper 403 close to the ball groove 4031 is inserted and assembled from the second end of the steel bowl 401 and abuts against the ball bearing 402 to freely rotate with the steel bowl 401. The second end of the outer stopper 403 is connected to the bottom of the front fork seat tube 50 to cooperate with the downward force of the head tube 10 to form axial positioning;

[0052] Among them, the free end of the head pipe 10 abuts the extended retaining edge 4011 of the second end of the steel bowl 401, the first end of the outer member 403 abuts the second horizontal plane of the second retaining ring 405, and the annular outer wall surface of the outer member 403 is tightly contacted and assembled with the annular inner wall surface of the first retaining ring 404 to prevent water and dust from the ball bearing 402.

[0053] In the technical solution of the above embodiment, refer to the attached Figure 1-3, assemble the second retaining ring 405 with the fixed step surface 4013 of the steel bowl 401, insert the ball bearing 402, and then assemble the first retaining ring 404 with the annular mounting groove 4012; then insert and assemble the outer retaining member 403 from the second end of the steel bowl 401, and the ball groove 4031 of the outer retaining member 403 abuts against the ball bearing 402 to rotate freely with the steel bowl 401. The lower waterproof bowl assembly is assembled, and then the whole is inserted into the front fork stem 50, and the head tube 10 is subsequently assembled so that the lower waterproof bowl assembly is located under the head tube 10. The outer stopper 403 is connected to the step formed at the bottom end of the front fork stem 50 for positioning. The first end of the steel bowl 401 is embedded in the lower end surface of the head tube 10. The second stopper 405 cooperates with the first end of the outer stopper 403 to form a seal. The first stopper 404 and the annular outer wall of the outer stopper 403 form a tight contact assembly seal. The two cooperate to seal the ball bearing 402 against dust, thereby maintaining the smooth rotation between the lower end of the head tube 10 and the bottom end of the front fork stem 50 to prevent water and dust, thereby improving the smoothness of rotation.

[0054] Figure 4 yes Figure 2 A magnified schematic diagram of structure B in the middle. Figure 5 FIG. 1 is a cross-sectional view of an exploded half side of a waterproof bowl assembly located at the upper portion according to an exemplary embodiment. Figure 1-5 , the upper waterproof headset 40 includes:

[0055] The steel bowl 401 has a first end and a second end. The inner diameter of the first end is smaller than that of the second end. The first end is embedded in the free end of the head pipe 10. A second retaining ring 405 is fixed on the inner wall of the first end. A first retaining ring 404 is embedded on the inner wall near the second end.

[0056] Optionally, the steel bowl 401 includes: a bowl-shaped body, which has a first end and a second end, and the first end and the second end are axially connected, the inner diameter of the first end is smaller than the inner diameter of the second end, and the first end is embedded in the free end of the head pipe 10; an extended rib 4011, which is integrally formed on the outer side of the second end of the bowl-shaped body to position and abut with the free end of the head pipe 10; an annular mounting groove 4012, which is opened on the inner wall of the bowl-shaped body near the second end to match the embedded first retaining ring 404; a fixed step surface 4013, which is integrally formed on the hole wall of the first end of the bowl-shaped body.

[0057] Optionally, an annular assembly groove is provided on the annular outer wall of the second retaining ring 405, and the annular assembly groove is fixedly assembled on an annular step 4013 integrally formed on the inner wall of the first end of the bowl-shaped body.

[0058] The ball bearing 402 is assembled inside the first end of the steel bowl 401 and is located between the first retaining ring 404 and the second retaining ring 405; it can be understood that the ball cage of the ball bearing 402 is made of nylon, which will not rust, can solve the waterproof problem and has a better rotation effect, and the ball bearing 402 is coated with grease, which can withstand low temperatures below 20 degrees Celsius without solidifying and high temperatures above 120 degrees Celsius without losing. The grease is purchased from the market and the model is 501TSHY.

[0059] The outer member 403 is annular and its first end is inserted and assembled from the second end of the steel bowl 401 and abuts against the ball bearing 402 so as to rotate freely with the steel bowl 401; wherein the outer member 403 includes: a second internal thread surface 4032 formed on the inner wall surface of the outer member 403; a second external octagonal step 4033 formed on the outer wall surface of the second end of the outer member 403 so as to cooperate with a tool to thread the second internal thread surface 4032 with the external thread surface preset on the front fork seat tube 50;

[0060] The upper retaining ring 406 is sleeved on the outer retaining member 403, and the upper retaining ring 406 closes the annular gap formed between the outer retaining member 403 and the second end of the steel bowl 401 to prevent water and dust from the ball bearing 402 built into the steel bowl 401;

[0061] Among them, the free end of the head pipe 10 abuts the extended retaining edge 4011 of the second end of the steel bowl 401, the first end of the outer member 403 abuts the second horizontal plane of the second retaining ring 405, and the annular outer wall surface of the outer member 403 is tightly contacted and assembled with the annular inner wall surface of the first retaining ring 404 to prevent water and dust from the ball bearing 402.

[0062] In the technical solution of the above embodiment, refer to the attached Figure 1-5 The assembly process of the upper waterproof bowl set is as follows: assemble the second retaining ring 405 with the fixed step surface 4013 of the steel bowl 401, install the ball bearing 402, and then assemble the first retaining ring 404 with the annular receiving groove 4012; then assemble the upper retaining ring 406 from the second end of the steel bowl 401 in sequence and insert and assemble it into the outer member 403, the ball groove 4031 of the outer member 403 abuts the ball bearing 402 to rotate freely with the steel bowl 401, and the installation of the upper retaining ring 406 can close the annular gap formed between the outer member 403 and the second end of the steel bowl 401, and the assembly of the upper waterproof bowl set is completed;

[0063] After the assembly is completed, it is sleeved on the front fork stem 50 and after the overall assembly is located between the upper end of the head tube 10 and the handlebar stem 60, at this time, the first end of the steel bowl 401 is embedded in the upper end surface of the head tube 10, the second retaining ring 405 cooperates with the first end of the outer member 403 to form a closure, the first retaining ring 404 and the annular outer wall of the outer member 403 form a tight contact assembly seal, the two cooperate to dust-proof seal the ball bearing 402, and the upper retaining ring 406 closes the second end of the steel bowl 401, the outer member 403 is threadedly assembled and fixed on the front fork stem 50 to maintain axial fixation, thereby maintaining smooth rotation between the upper end of the head tube 10 and the upper end of the front fork stem 50 to prevent water and dust, thereby improving the smoothness of rotation.

[0064] Optionally, refer to the attached Figure 2-5 The second retaining ring 405 has a plurality of first lips integrally formed on one side facing the second end of the steel bowl 401 , and during assembly, the first lips are deformed by force to close the connection between the outer retaining member 403 and the second retaining ring 405 .

[0065] Optionally, refer to the attached Figure 2-5 At least one second lip is formed on the annular inner wall of the first retaining ring 404, and the second lip is assembled in tight contact with the annular outer wall of the outer retaining member 403.

[0066] In summary, the front fork waterproof bowl set provided by the embodiment of the utility model can effectively reduce the rotational friction resistance between the head tube and the front fork stem through the combined assembly of the upper and lower parts of the waterproof bowl set 40, and the structural design of the waterproof bowl set 40 can effectively prevent water and dust from the ball bearings assembled in the steel bowl. After testing, the dustproof effect reaches the IP5 level, and the waterproof system is improved to the IP4 level, which prevents moisture from entering the inside of the bowl set, thereby extending the service life of the bowl set, maintaining the long-term smooth operation of the ball bearings, and improving the smoothness of rotation.

[0067] Embodiment 2: The difference between this embodiment and embodiment 1 is that: Figure 5 is a diagram of a front fork waterproof headset assembly according to an exemplary embodiment, with reference to the attached Figure 1-5 The upper end of the waterproof bowl assembly 40 located at the upper end of the front fork riser 50 is also provided with a fastener, and the fastener includes:

[0068] The upper fixing ring 30 has a first outer octagonal step 302 formed on the outside and a first inner threaded surface 301 formed on the inside. The first outer octagonal step 302 cooperates with a tool to thread the upper fixing ring 30 with a preset outer threaded surface on the front fork stem 50 through the first inner threaded surface 301. Optionally, a trapezoidal ring 303 is installed on the upper end of the upper fixing ring 30. The inner wall surface of the trapezoidal ring 303 is in close contact with the annular outer wall surface of the handlebar stem 60 and closes the upper end surface of the front fork stem 50.

[0069] There is a collar gasket 20, which is disposed between the upper fixing ring 30 and the waterproof bowl assembly 40 located at the upper end to prevent loosening.

[0070] In the technical solution of the above embodiment, refer to the attached Figure 1-5 The threaded installation of the upper fixing ring 30 can further compress and fix the axial position of the waterproof headset, and play a role in preventing loosening, so that the front fork waterproof headset proposed in this embodiment will not loosen due to the vibration of the bicycle when traveling, and effectively ensure the effectiveness of tightening the front fork gap. The setting of the trapezoidal ring 303 can effectively close the connection between the handlebar stem 60 and the front fork stem 50, and play a role in auxiliary waterproof and dustproof sealing.

[0071] For other structures not described, refer to Example 1.

[0072] The embodiment of the present application also provides a bicycle, comprising the front fork waterproof headset set of any one of the above embodiments 1-2.

[0073] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A waterproof headset for a front fork, which is installed and used with a head tube and a front fork riser of a bicycle frame, characterized in that: It includes two waterproof bowl sets, which are sleeved on the front fork riser and symmetrically arranged at the two free ends of the head tube; the waterproof bowl set includes: A steel bowl having a first end and a second end, wherein the inner diameter of the first end is smaller than the inner diameter of the second end, the first end is embedded in the free end of the head pipe, a second retaining ring is fixed on the inner wall of the first end, and a first retaining ring is embedded on the inner wall close to the second end; A ball bearing, mounted inside the first end of the steel bowl and located between the first retaining ring and the second retaining ring; An outer stopper, which is annular and has a first end which is inserted and assembled from the second end of the steel bowl and abuts against the ball bearing so as to rotate freely with the steel bowl; The free end of the head pipe abuts against the second end of the steel bowl, the first end of the outer member abuts against the second horizontal plane of the second retaining ring, and the annular outer wall surface of the outer member is assembled in tight contact with the annular inner wall surface of the first retaining ring to prevent the ball bearing from being waterproof and dusty.

2. The waterproof headset for front fork according to claim 1, characterized in that: An upper retaining ring is also sleeved on the outer retaining member at the upper end of the front fork riser, and the upper retaining ring closes the annular gap formed between the outer retaining member and the second end of the steel bowl to prevent water and dust from entering the ball bearing built into the steel bowl.

3. The waterproof headset for front fork according to claim 1, characterized in that: A plurality of first lips arranged coaxially are integrally formed on one side of the second retaining ring facing the second end of the steel bowl. During assembly, the first lips are deformed by force to close the connection between the outer retaining member and the second retaining ring.

4. The waterproof headset for front fork according to claim 1, characterized in that: At least one second lip is formed on the annular inner wall of the first retaining ring, and the second lip is assembled in tight contact with the annular outer wall surface of the outer retaining member.

5. The waterproof headset for front fork according to claim 1, characterized in that: A fastener is also provided at the upper end of the waterproof bowl assembly located at the upper end of the front fork riser, and the fastener includes: An upper fixing ring, which has a first external octagonal step formed on the outside and a first internal threaded surface formed on the inside, and the first external octagonal step cooperates with a tool to thread the upper fixing ring through the first internal threaded surface and the external threaded surface preset on the front fork stem; A collar gasket is arranged between the upper fixing ring and the waterproof bowl assembly at the upper end to prevent loosening.

6. The waterproof headset for front fork according to claim 5, characterized in that: The upper end of the upper fixing ring is equipped with a trapezoidal ring member, the inner wall surface of the trapezoidal ring member tightly contacts the annular outer wall surface of the handlebar riser and closes the upper end surface of the front fork riser.

7. The waterproof headset for front fork according to claim 1, characterized in that: The outer stopper located at the upper end of the front fork riser also includes: A second internal thread surface formed on the inner wall surface of the outer member; The second outer octagonal step is formed on the outer wall surface of the second end of the outer stopper to cooperate with a tool to threadably assemble the second inner thread surface with a preset outer thread surface on the front fork seat tube.

8. The waterproof headset for front fork according to claim 1, characterized in that: The steel bowl includes: A bowl-shaped body having a first end and a second end, wherein the first end and the second end are axially connected, the inner diameter of the first end is smaller than the inner diameter of the second end, and the first end is embedded in the free end of the head pipe; An extended rib is integrally formed on the outer side of the second end of the bowl-shaped body so as to be positioned and abutted against the free end of the head pipe; An annular receiving groove is provided on the inner wall of the bowl-shaped body close to the second end to match and embed the first retaining ring; A fixed step surface is integrally formed on the hole wall of the first end of the bowl-shaped body.

9. The waterproof headset for front fork according to claim 8, characterized in that: An annular assembly groove is provided on the annular outer wall of the second retaining ring, and the annular assembly groove is fixedly assembled on an annular step integrally formed on the inner wall of the first end of the bowl-shaped main body.

10. A bicycle, characterized in that: A front fork waterproof headset as claimed in any one of claims 1 to 9.

Images