Bicycle dial plate headstock

Abstract

The utility model relates to a bicycle dial plate headstock which comprises a lower bowl piece and an upper bowl piece which are coaxially arranged, and the lower bowl piece is connected to a front fork steering tube in a sleeving mode and is in interference fit with a head tube; a sunflower hanging core is assembled at the top end of the upper bowl piece, and a fastening screw is connected into the sunflower hanging core in a threaded mode. The top end face of the upper bowl piece is covered with a hanging core cover, the hanging core cover is limited between the sunflower hanging core and the fastening screw, the fastening screw is sleeved with a dust cover, the surface of the dust cover is fixedly connected with a vehicle dial plate, and a plurality of fixing pieces which are evenly distributed in the circumferential direction and can move in the radial direction are arranged on the surface of the dust cover. Springs enabling the fixing pieces to keep the radial outward moving tendency are connected between the fixing pieces and the dustproof cover. L-shaped locking blocks capable of moving up and down are arranged on the surfaces of the fixing pieces, the vehicle dial plate is embedded in a limiting space formed by the multiple locking blocks, and the compass and the vehicle dial plate can be conveniently installed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bicycles, in particular to a bicycle dial head cup. BACKGROUND

[0002] At present, the light aluminum cover is mainly installed on the front fork of the bicycle on the market, which has no practical significance. On the other hand, many friends who love bicycles also like to travel a lot, and they often carry a compass or a watch during the travel. Therefore, it is urgent to combine the two functions into one bicycle dial head cup assembly to solve the problem of checking the compass or the time during the travel by bicycle. CONTENT OF THE UTILITY MODEL

[0003] In order to facilitate the installation of the compass and the dial of the bicycle, the present application provides a bicycle dial head cup.

[0004] The present application provides a bicycle dial head cup, which adopts the following technical scheme:

[0005] A bicycle dial head cup, comprising a coaxially arranged lower cup member and an upper cup member, the lower cup member is sleeved on the front fork steering pipe and is in interference fit with the head tube; the top end of the upper cup member is equipped with a sunflower hanging core, the sunflower hanging core is internally threadedly connected with a fastening screw; the top end surface of the upper cup member is covered with a hanging core cover, the hanging core cover is limited between the sunflower hanging core and the fastening screw, a dust cover is sleeved on the fastening screw, a dial of the bicycle is fixedly connected to the surface of the dust cover, and a plurality of radially movable fixing members are uniformly distributed in the circumferential direction of the dust cover, and a spring for keeping the fixing member in a radially outward moving trend is connected between each fixing member and the dust cover; the surface of each fixing member is provided with an "L"-shaped locking block, and the dial of the bicycle is embedded in the limiting space formed by the plurality of locking blocks.

[0006] By adopting the above technical scheme, the direct fixation of the dust cover and the dial of the bicycle reduces the additional support structure required for the installation of the traditional dial, reduces the overall weight, and avoids the risk of loosening caused by the assembly of multiple components. The spring-driven fixing member forms a limiting space through the "L"-shaped locking block, and the dial of the bicycle is automatically triggered to mechanically lock when it is pressed downward, the installation time is significantly reduced, and the operation efficiency is improved. The dust cover covers the top end of the head cup, blocks the intrusion of mud and rain from the top of the steering pipe, and prolongs the service life of the internal bearing.

[0007] Optionally, a magnetic member is installed on the dust cover, the magnetic member is arranged at one end of the dust cover facing the fastening screw, and forms a magnetic adsorption cooperation with the screw cap of the fastening screw.

[0008] By adopting the technical scheme, the dust cover is closely attached to the head bowl, the axial displacement of the dust cover in riding bumping is reduced, and dial deviation caused by vibration is avoided. During installation, the magnetic attraction effect guides the dust cover and the fastening screw to be automatically centered, the difficulty of manual calibration is reduced, and the method is especially suitable for night or outdoor rapid repair scenes.

[0009] Optionally, the dust cover is provided with radial guide grooves corresponding to the number of fixing members, and the inner walls on both sides of each guide groove are provided with limiting protrusions in interference fit with the fixing members.

[0010] By adopting the technical scheme, the guide groove limits the fixing member to move only in the radial direction, eliminates lateral shaking, ensures the installation repeatability of the watch dial, meets the installation requirements of high-precision sensors, the limiting protrusion is in interference fit with the groove of the fixing member, prevents the fixing member from accidentally falling out when the spring fails, and improves the reliability.

[0011] Optionally, a sealing ring is rotatably sleeved on the outer periphery of the dust cover, and the sealing ring is provided with an unlocking hole corresponding to the radial guide groove; when the unlocking hole is aligned with the radial guide groove, the fixing member can be radially displaced outward to protrude out of the outer surface of the sealing ring.

[0012] By adopting the technical scheme, the sealing ring covers the guide groove in the normal state, blocks the invasion path of mud and dust, and after rotating the sealing ring to align the unlocking hole with the guide groove, the fixing member can be operated externally, and the protection and maintenance convenience are considered. The watch dial can be maintained without disassembling the overall structure.

[0013] Optionally, anti-skid stripes are circumferentially distributed on the outer surface of the dust cover.

[0014] By adopting the technical scheme, the anti-skid stripes increase the surface friction coefficient, the torque requirement for rotating the sealing ring when operating with gloves or wet hands is reduced, and slipping is avoided.

[0015] Optionally, an operating protrusion is arranged on the outer side of the fixing member, and an avoiding notch matched with the shape of the operating protrusion is arranged on the inner wall of the unlocking hole of the sealing ring; when the sealing ring is rotated to align the unlocking hole with the guide groove, the operating protrusion can be inserted into the avoiding notch and tightly attached to the sealing ring.

[0016] By adopting the technical scheme, the operating protrusion is flush with the outer surface of the sealing ring after being embedded in the avoiding notch, avoiding the protrusion from scratching clothes or backpacks, improving the appearance neatness, and when the sealing ring is not aligned, the operating protrusion is wrapped by the silica gel ring body, and a certain pressing force needs to be applied to trigger it, reducing the risk of accidental unlocking during riding.

[0017] Optionally, the inner side of the "L"-shaped locking block is provided with a guide slope, and the outer edge of the vehicle dial is provided with a wedge-shaped groove matched with the guide slope; when the vehicle dial is pressed to move downward, the guide slope and the wedge-shaped groove interact to generate a radial component force, which drives the fixing member to move outward radially against the spring force until the vehicle dial is clamped into the locking block limiting area.

[0018] By adopting the above technical scheme, the geometric cooperation of the slope and the wedge-shaped groove automatically generates a radial component force when the vehicle dial is pressed downward, which pushes the fixing member to move outward synchronously, realizes "single-hand pressing to lock", improves the installation fault tolerance, and ensures that the four locking blocks move outward synchronously to balance the circumferential stress of the vehicle dial and avoid plastic cracking caused by unilateral stress concentration.

[0019] In summary, the beneficial technical effects of the present application are that the dust cover is directly fixed with the vehicle dial, the additional support structure required for traditional dial installation is reduced, the overall weight is reduced, and the risk of loosening caused by multi-component assembly is avoided. The fixing member driven by the spring forms a limiting space through the "L"-shaped locking block, and the vehicle dial is automatically triggered to mechanically lock when pressed downward, which significantly reduces the installation time and improves the operation efficiency. The dust cover covers the top end of the head bowl to block mud and rainwater from entering from the top of the steering pipe, prolonging the service life of the internal bearing. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0021] Figure 2 is an exploded structural schematic diagram of the vehicle dial and the dust cover according to the present application.

[0022] Figure 3 is an exploded structural schematic diagram of the head tube in the embodiment of the present application.

[0023] Figure 4 is an exploded structural schematic diagram of the fixing member and the dust cover in the embodiment of the present application.

[0024] Figure 5 is a structural schematic diagram of the operation protrusion leaving the avoidance gap in the embodiment of the present application.

[0025] Reference signs: 1, lower bowl member; 2, upper bowl member; 3, head tube; 4, handle riser tube; 5, axial through hole; 6, sunflower hanging core; 7, fastening screw; 8, hanging core cover; 9, dust cover; 10, vehicle dial; 11, fixing member; 12, spring; 13, locking block; 14, limiting space; 15, radial guide groove; 16, limiting protrusion; 17, sealing ring; 18, unlocking hole; 19, anti-skid stripes; 20, operation protrusion; 21, avoidance gap; 22, guide slope. DETAILED DESCRIPTION

[0026] The following will be described in detail with reference to the accompanying drawings Figures 1-5Further details of the application are provided below.

[0027] The application discloses a bicycle front fork crown assembly. As shown in Figure 1 、 Figure 2 and Figure 3 , the head crown comprises coaxially arranged lower crown member 1 and upper crown member 2. The lower crown member 1 is sleeved on the outside of the front fork steering tube through interference fit and is fixed with the head tube 3. The upper crown member 2 is provided with a sunflower hanging core 6 at the top end, and the hanging core is internally threadedly connected with a fastening screw 7. A hanging core cover 8 is covered on the top end of the upper crown member 2 and is pressed and limited by the sunflower hanging core 6 and the screw cap of the fastening screw 7. A dust cover 9 is sleeved on the outside of the fastening screw 7, the top of which is fixed with a watch dial 10, and the bottom extends above the hanging core cover 8 to form a sealed shield.

[0028] As shown in Figure 2 、 Figure 3 and Figure 4 , the dust cover 9 serves as the bearing body of the watch dial 10, and the cylindrical structure thereof is sleeved on the outside of the fastening screw 7, and the top is fixed with the base of the watch dial 10 through the buckle structure. The bottom of the dust cover 9 is embedded with a ring-shaped neodymium iron boron magnet, the outer diameter of which is accurately matched with the steel screw cap of the fastening screw 7, so that the axial fitting stability of the dust cover 9 and the head crown is enhanced through magnetic attraction, and the small displacement caused by riding bumping can be offset.

[0029] Four radial guide grooves 15 are formed in the middle of the dust cover 9, which are uniformly distributed at 90° along the circumference. The inner walls on both sides are molded into limiting protrusions 16, which form accurate constraints on the sliding track of the fixing member 11. The fixing member 11 is stamped into a “T” shaped sliding block structure made of stainless steel, and the horizontal wing plate is embedded into the guide groove, which keeps a single-sided gap with the groove wall, thereby ensuring smooth sliding without shaking.

[0030] As shown in Figure 3 、 Figure 4 , the fixing member 11 is provided with a rectangular operation protrusion 20 on the outside and an “L” type locking block 13 which can slide up and down on the inside. A guide inclined surface 22 is arranged on the inside of the short side of the locking block 13, and the long side is vertically upward to form a limiting stop edge, which forms a geometric cooperation with the wedge-shaped groove of the outer edge of the watch dial 10. When the watch dial 10 is pressed to move downward, the wedge-shaped groove inclined surface contacts the guide inclined surface 22 to generate a radial component force, which pushes the fixing member 11 to overcome the resistance of the spring 12 to displace outward until the watch dial 10 is completely embedded in the limiting space 14 surrounded by the locking block 13, at which time the compressed spring 12 rebounds to drive the fixing member 11 to reset, and the mechanical self-locking is completed.

[0031] As shown in Figure 3 、 Figure 4 and Figure 5As shown, in order to realize the balance between waterproof and dustproof and convenient operation, the dust cover 9 is sleeved with a sealing ring 17 made of silica gel, and the sealing ring 17 is rotationally connected to the dust cover 9. Four unlocking holes 18 corresponding to the guide grooves are formed on the surface of the sealing ring 17, and the inner wall of the hole is designed to have an avoiding notch 21 which is accurately matched with the structure of the rectangular operation protrusion 20. When the sealing ring 17 is rotated to align the unlocking hole 18 with the guide groove, the operation protrusion 20 can be inserted into the avoiding notch 21 and tightly abut against the inner wall thereof. When the sealing ring 17 is reversely rotated in any direction, the unlocking hole 18 and the operation protrusion 20 are dislocated, and the silica gel ring body completely covers the opening of the guide groove, thereby blocking the path of the external pollutants. The design can keep the user in a completely sealed state during normal use, and only when disassembly is needed, the operation interface is exposed by rotating the sealing ring 17, so that the functionality and reliability are considered.

[0032] The embodiment of the application discloses an implementation principle of a bicycle dial 10 head bowl, which comprises the following steps: during assembly, an operator first aligns the bottom of the dial 10 with the clamping groove at the top of the dust cover 9 and applies a vertical downward pressure. During the process, the outer edge of the dial 10 is in contact with the guide inclined surface 22 of the locking block 13, and a radial component force is generated to push the four fixing members 11 to move outward synchronously and compress the spring 12 to store energy. When the dial 10 moves downward to the limit position, the vertical blocking edge of the locking block 13 is clamped into the edge groove of the dial, the spring 12 releases the stored energy to drive the fixing member 11 to reset, and radial locking is completed.

[0033] During disassembly, the unlocking hole 18 is aligned with the guide groove by rotating the sealing ring 17, and the sealing ring 17 is rotated to drive the fixing member 11 to release the limiting of the dial 10, so that the dial can be vertically lifted out. The whole disassembly process does not need tools.

[0034] The above are preferred embodiments of the application, and are not intended to limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A bicycle head tube cup (10) comprising a lower cup member (1) and an upper cup member (2) arranged coaxially, the lower cup member (1) being sleeved on a front fork steerer tube and being in interference fit with a head tube (3); the upper cup member (2) being provided at a top end thereof with a sunflower stem (6), the sunflower stem (6) being internally threaded to connect a fastening screw (7); and a top end face of the upper cup member (2) being covered with a stem cover (8), the stem cover (8) being limited between the sunflower stem (6) and the fastening screw (7), characterized in that: The dust cover (9) is provided with a plurality of radially movable fixing members (11) which are uniformly distributed in the circumferential direction, and each fixing member (11) is connected with the dust cover (9) through a spring (12) which makes the fixing member (11) keep a tendency of radial outward movement; each fixing member (11) is provided with an "L"-shaped locking block (13), and the car dial (10) is embedded in the limiting space (14) formed by the plurality of locking blocks (13).

2. A bicycle head badge (10) according to claim 1, characterized in that: A magnetic member is installed on the dust cover (9), and the magnetic member is arranged at one end of the dust cover (9) facing the fastening screw (7) and forms a magnetic adsorption cooperation with the screw cap of the fastening screw (7).

3. A bicycle head badge (10) according to claim 1, characterized in that: The dust cover (9) is provided with a plurality of radial guide grooves (15) corresponding to the number of fixing members (11), and each guide groove is provided with a limiting protrusion (16) on the inner wall of both sides of the guide groove, which forms an interference fit with the fixing member (11).

4. A bicycle head badge (10) according to claim 3, wherein: The dust cover (9) is rotatably provided with a sealing ring (17) on the outer periphery, and the sealing ring (17) is provided with an unlocking hole (18) corresponding to the radial guide groove (15); when the unlocking hole (18) is aligned with the radial guide groove (15), the fixing member (11) can be radially displaced outward to protrude out of the outer surface of the sealing ring (17).

5. A bicycle dial (10) head cup according to claim 4, characterized in that: The dust cover (9) is provided with anti-slip stripes (19) which are uniformly distributed in the circumferential direction on the outer surface.

6. A bicycle dial (10) head cup according to claim 5, characterized in that: The fixing member (11) is provided with an operation protrusion (20) on the outer side, and the inner wall of the unlocking hole (18) of the sealing ring (17) is provided with an avoidance notch (21) which is matched with the shape of the operation protrusion (20); when the sealing ring (17) is rotated to align the unlocking hole (18) with the guide groove, the operation protrusion (20) can be inserted into the avoidance notch (21) and tightly attached to the sealing ring (17).

7. A bicycle head badge (10) according to claim 1, characterized in that: The inner side of the "L"-shaped locking block (13) is provided with a guide inclined surface (22), and the outer edge of the car dial (10) is provided with a wedge-shaped groove which is matched with the guide inclined surface (22); when the car dial (10) is pressed to move downward, the guide inclined surface (22) and the wedge-shaped groove interact to generate a radial component force, which drives the fixing member (11) to move radially outward against the force of the spring (12) until the car dial (10) is clamped into the locking block (13) limiting area.

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