A bicycle front fork

Abstract

The utility model provides a bicycle front fork frame, include: roof, present rectangular structure, round pole, two round poles symmetry detachable connection in the roof lower extreme, install the cylinder, two install the cylinder respectively to slide in two round pole lower extreme, piston, with the round pole lower extreme connection, piston slide connection in install the cylinder, install the cylinder in the space of piston lower extreme fills with inert gas, elastic part, elastic part install between piston lower extreme and install the cylinder inside bottom end, adjusting part, adjusting part rear end all with two install the cylinder front end connection, auxiliary spare, with install the cylinder upper end intercommunication arrangement, auxiliary spare is located round pole outer end, this design realizes that the front fork frame has double formula damping function on, and oxygen is blocked to elastic part and is handled, effectively protects elastic part, promotes elastic part life, reduces the probability of the abnormal sound etc. when reducing the vibration effectively, effectively guarantees the use effect and quality of front fork frame.

Description

Technical Field

[0001] This utility model relates to a bicycle front fork frame, belonging to the field of bicycle technology. Background Technology

[0002] As an important means of transportation for daily commuting, sports and fitness, and outdoor recreation, the bicycle's front fork is one of its core components. A standard front fork typically consists of a top seat tube, a lower inverted U-shaped tube, a shock absorber fitted onto the vertical end of the inverted U-shaped tube, and a mounting plate on the outer end of the shock absorber. During assembly, the frame is first fixed to the outer end of the top seat tube, then the handlebars are installed on the top end of the top seat tube. The front wheel is then installed via the mounting plate, and the rear wheel is assembled to the frame and connected to the drive unit, thus completing the bicycle assembly. Most existing shock absorbers use a spring structure, and the springs are exposed. During riding, the shock absorber frequently compresses the springs to dampen vibrations, causing the springs to be exposed to air for extended periods. This makes them susceptible to factors such as humidity and oxidation, significantly shortening the lifespan of the shock absorber. Furthermore, the shock absorber generates mechanical friction noise during operation, leading to frequent abnormal noises during riding, which affects the performance and quality of the front fork. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a bicycle front fork frame to solve the problems mentioned in the background art. This utility model is convenient to use, easy to operate, has good stability and high reliability.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a bicycle front fork frame, comprising: The top panel has a rectangular structure. Two round rods are provided, and the two round rods are symmetrically and detachably connected to the lower end of the top plate; The mounting cylinder is provided in two parts, and the two mounting cylinders are slidably connected to the lower ends of two round rods, with the round rods extending into the mounting cylinders; A piston is connected to the lower end of a round rod. The piston is slidably connected inside a mounting cylinder, and the space inside the mounting cylinder located at the lower end of the piston is filled with inert gas. An elastic element is installed between the lower end of the piston and the bottom end of the inner cavity of the mounting cylinder; An adjusting component, the rear end of which is connected to the front end of two mounting cylinders; An auxiliary component is arranged in communication with the upper end of the mounting cylinder, and the auxiliary component is located at the outer end of the round rod.

[0005] Furthermore, the auxiliary component includes an auxiliary cylinder, which is connected to the upper end of the mounting cylinder and is located outside the round rod. The outer end of the round rod is slidably connected to an auxiliary column, which is located inside the auxiliary cylinder. The inner wall of the auxiliary column is recessed outward to form multiple first mounting grooves, and a first sealing element is installed on each of the multiple first mounting grooves. The first sealing element is fitted onto the outer end of the round rod. The outer end of the auxiliary column is recessed inward to form multiple second mounting grooves, and a second sealing element is installed on each of the multiple second mounting grooves. The second sealing element is attached to the inner wall of the auxiliary cylinder.

[0006] Furthermore, the inner wall of the auxiliary cylinder is recessed outward to form a groove, a limiting member is mounted on the groove, and the limiting member is attached to the upper end of the auxiliary column. The outer end of the round rod is slidably connected to a plug, and the plug has a T-shaped cross-section. The horizontal part of the plug is attached to the upper end of the auxiliary cylinder, and the vertical part of the plug is located inside the auxiliary cylinder and above the limiting member. The vertical part of the plug is interference-fitted with the auxiliary cylinder.

[0007] Furthermore, the adjusting component includes a connecting plate, two rectangular cylinders are symmetrically mounted on the rear end of the connecting plate, and the cross-section of the connecting plate is arc-shaped. The two rectangular cylinders are respectively attached to the upper front end of the mounting cylinder. The front ends of the two mounting cylinders are fixedly connected to auxiliary blocks, and the two auxiliary blocks are respectively located inside the two rectangular cylinders. The two rectangular cylinders are rotatably connected to screws, and the two screws respectively pass through the two auxiliary blocks, and the screws are threadedly connected to the auxiliary blocks.

[0008] Furthermore, guide rods are installed inside both rectangular tubes, and the guide rods are located outside the screw. The two guide rods pass through the two auxiliary blocks respectively, and the guide rods are slidably connected to the auxiliary blocks.

[0009] Furthermore, two positioning cylinders are symmetrically installed at the lower end of the top plate, and the two positioning cylinders are respectively located at the upper outer ends of two round rods. A mounting rod is detachably connected to the middle of the upper part of the top plate, and the mounting rod is located between the two positioning cylinders.

[0010] Furthermore, a hanging plate is installed at the lower front end of both mounting cylinders, and an air pipe is connected to the lower end of both mounting cylinders, with a control valve installed on the air pipe.

[0011] The beneficial effects of this utility model are: When used on rough off-road conditions, the piston and mounting cylinder move relative to each other. This compresses the elastic element, generating an elastic force that counteracts vibration. Simultaneously, it compresses the inert gas filling the sealed space below the piston within the mounting cylinder, increasing its pressure and further counteracting vibration. This dual-mode damping effectively reduces the likelihood of handlebar slippage due to vibration, ensuring safety, comfort, and performance. Furthermore, the inert gas in the sealed space below the piston provides oxygen protection to the elastic element, extending its lifespan. The combined effect of the inert gas and the sealed space also reduces noise generated by the elastic element, minimizing abnormal noises during damping and ensuring the overall performance and quality of the fork. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a bicycle front fork frame according to the present invention; Figure 2 This is a cross-sectional view of a bicycle front fork frame according to the present invention; Figure 3 for Figure 2 Enlarged view of section A in the middle; Figure 4 This is an assembly drawing of the mounting cylinder and connecting plate in a bicycle front fork frame according to the present invention; In the picture: 1-Top plate, 11-Mounting rod, 12-Positioning cylinder; 2-Round rod; 3-Installation cylinder, 31-Plug, 32-Auxiliary cylinder, 33-Hanging plate, 34-Air pipe, 35-Auxiliary column, 351-First O-ring, 352-Second O-ring, 36-Snap ring, 37-Auxiliary block; 4-Connecting plate, 41-Rectangular tube, 42-Guide rod, 43-Screw rod; 5-Piston; 6-Elastic element. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0014] Example 1: As Figure 1 and Figure 2As shown, this utility model provides a technical solution: a bicycle front fork frame, including: a top plate 1 with a rectangular structure, a mounting rod 11 located between two positioning cylinders 12 is detachably connected to the middle of the upper end of the top plate 1, the mounting rod 11 provides a mounting carrier for the bicycle frame and handlebars, and two round rods 2 with their lower ends extending into the two mounting cylinders 3 are symmetrically and detachably connected to the lower end of the top plate 1, the round rods 2 provide a mounting carrier for the piston 5, and two positioning cylinders 12 located at the upper outer ends of the two round rods 2 are symmetrically installed on the lower end of the top plate 1, the positioning cylinders 12 are used to position the installation of the round rods 2; Two mounting cylinders 3 are slidably connected to the lower ends of two round rods 2 respectively. The mounting cylinders 3 provide mounting carriers for components such as hanging plates 33. Two pistons 5, which are slidably connected inside the two mounting cylinders 3 respectively, are set on the lower ends of the two round rods 2. The pistons 5 compress the elastic element 6. The elastic element 6 is installed between the lower ends of the two pistons 5 and the bottom ends of the two mounting cylinders 3. The elastic element 6 is used for vibration damping. The elastic element 6 can be a spring. Two mounting plates 33 are respectively installed on the lower front end of the two mounting cylinders 3. The two mounting plates 33 are used together to install the bicycle front wheel. Two air pipes 34 are respectively connected and installed on the lower end of the two mounting cylinders 3. Air is inflated into the mounting cylinders 3 through the air pipes 34. A control valve is installed on the air pipe 34 to control whether the air pipe 34 is open. The space in the mounting cylinder 3 located at the lower end of the piston 5 is filled with inert gas. The inert gas protects the elastic element 6 on the one hand, and works with the piston 5 to reduce the noise generated by the elastic element 6 during vibration damping on the other hand.

[0015] During assembly, first insert the two round rods 2 into the two positioning cylinders 12 respectively, so that the round rods 2 are positioned and installed. Then, use bolts and other fasteners to fasten the round rods 2 to the top plate 1. Then, install the two elastic elements 6 into the bottom of the two mounting cylinders 3 and the lower end of the two pistons 5 respectively, and insert the pistons 5 at the lower end of the two round rods 2 into the two mounting cylinders 3 respectively. Under the action of piston 5, the space at the lower end of piston 5 in the mounting cylinder 3 is sealed. Then, the sealed space is evacuated by air pipe 34. Inert gas is then filled into the vacuum-sealed space through air pipe 34. The control valve is then closed, so that the elastic element 6 is oxygen blocked by inert gas, which effectively protects the elastic element 6 and extends its service life. At the same time, the inert gas and the sealed space work together to reduce the noise generated by the elastic element 6 during operation, effectively reducing the probability of abnormal noise during vibration damping, and effectively ensuring the performance and quality of the front fork. Then, install the mounting rod 11 onto the top of the top plate 1, then install the bicycle frame onto the outer end of the mounting rod 11, then assemble the handlebars onto the top of the mounting rod 11, then install the two mounting cylinders 3 onto the left and right ends of the front wheel of the bicycle respectively through the two hanging plates 33, then assemble the rear wheel of the bicycle onto the rear of the frame, and connect the rear wheel to the drive on the frame to complete the assembly of the bicycle. When a bicycle is used on rough off-road terrain, the front wheel vibrates and transmits the vibration to the mounting cylinder 3. This causes relative movement between the piston 5 and the mounting cylinder 3. On one hand, this compresses the elastic element 6, generating an elastic force. The vibration is counteracted by the elastic force of the elastic element 6. On the other hand, it compresses the inert gas in the sealed space, increasing the gas pressure and further counteracting the vibration. This achieves a dual-mode vibration damping function on the front fork, effectively reducing the probability of handlebar slippage due to vibration damping and other factors, and ensuring the safety, comfort, and performance of the front fork.

[0016] Example 2: Figure 1 and Figure 4 As shown, two rectangular tubes 41 symmetrically installed at the rear end of the connecting plate 4 are respectively attached to the upper front end of the mounting tube 3. The cross-section of the connecting plate 4 is arc-shaped. The rectangular tubes 41 provide a mounting carrier for the screw 43. Two auxiliary blocks 37 located in the two rectangular tubes 41 are respectively fixedly connected to the front end of the two mounting tubes 3. The mounting tubes 3 can move up and down through the auxiliary blocks 37. Two screws 43, which are threaded through the two auxiliary blocks 37 respectively, are rotatably connected to the two rectangular cylinders 41. The auxiliary blocks 37 move up and down through the screws 43. Two guide rods 42, which are slidably connected to the two auxiliary blocks 37 and located outside the screws 43 respectively, are installed in the two rectangular cylinders 41. The movement of the auxiliary blocks 37 is guided by the guide rods 42.

[0017] During assembly, first insert the two round rods 2 into the two positioning cylinders 12 respectively, so that the round rods 2 are positioned and installed. Then, use bolts and other fasteners to fasten the round rods 2 to the top plate 1. Then, install the two elastic elements 6 into the bottom of the two mounting cylinders 3 and the lower end of the two pistons 5 respectively, and insert the pistons 5 at the lower end of the two round rods 2 into the two mounting cylinders 3 respectively. Under the action of piston 5, the space at the lower end of piston 5 in the mounting cylinder 3 is sealed. Then, the sealed space is evacuated by air pipe 34. Inert gas is then filled into the vacuum-sealed space through air pipe 34. The control valve is then closed. The mounting rod 11 is then installed on the upper end of the top plate 1. The bicycle frame is then installed on the outer end of the mounting rod 11. Finally, the handlebars are assembled on the upper end of the mounting rod 11. When a deviation occurs between the two mounting plates 33, the corresponding screw 43 can be rotated. Since the screw 43 is threadedly connected to the auxiliary block 37, the rotation of the screw 43 causes the auxiliary block 37 to move up and down, which in turn causes the corresponding mounting cylinder 3 to move up and down, thereby moving the corresponding mounting plate 33 to the appropriate position. Then, the two mounting cylinders 3 are installed on the left and right ends of the bicycle's front wheel through the two mounting plates 33. The rear wheel of the bicycle is then assembled onto the rear of the frame, and the rear wheel is connected to the drive unit on the frame, thus completing the bicycle assembly. This allows for the adjustment of the corresponding positions of the two mounting cylinders 3, effectively reducing the probability of obstructing the installation of the front wheel due to factors such as front fork assembly errors, and effectively ensuring assembly efficiency and the performance of the front fork.

[0018] Example 3: Figures 1-4 As shown, two auxiliary cylinders 32 located on the outer sides of the two round rods 2 are respectively connected and installed on the upper ends of the two mounting cylinders 3. The auxiliary cylinders 32 provide installation space for the auxiliary columns 35, and the two auxiliary columns 35 located in the two auxiliary cylinders 32 are respectively slidably connected to the outer ends of the two round rods 2. The auxiliary columns 35 provide processing carriers for components such as the first mounting groove. Multiple first mounting grooves are formed by recessing the inner wall of the auxiliary column 35 outwards. The first mounting grooves provide installation space for the first seals. Multiple first seals fitted on the outer end of the round rod 2 are respectively assembled on the multiple first mounting grooves. The multiple first seals work together to make the round rod 2 and the auxiliary column 35 sealed together. The first seals can be the second O-ring 352. Multiple second mounting grooves are formed by recessing the outer end face of the auxiliary column 35 inward. The second mounting grooves provide installation space for the second seals. Multiple second seals that fit against the inner wall of the auxiliary cylinder 32 are respectively assembled on the multiple second mounting grooves. The multiple second seals work together to make a sealing connection between the auxiliary column 35 and the auxiliary cylinder 32. The second seals can be the first O-ring 351. A groove is formed by recessing the inner wall of the auxiliary cylinder 32 outwards. The groove provides installation space for the limiting component. The limiting component, which is attached to the upper end of the auxiliary column 35, is assembled into the groove. The limiting component limits the installation between the auxiliary column 35 and the auxiliary cylinder 32. The limiting component can be a retaining spring 36. A plug 31 with a T-shaped cross-section, whose vertical part is located inside the auxiliary cylinder 32 and on the upper side of the limiting component, is slidably connected to the outer end of the round rod 2. The vertical part of the plug 31, whose horizontal part is attached to the upper end of the auxiliary cylinder 32, is interference-fitted with the auxiliary cylinder 32. The plug 31 seals the opening of the auxiliary cylinder 32.

[0019] During assembly, first, the two auxiliary columns 35 and the two plugs 31 are respectively fitted onto the outer ends of the two round rods 2. Then, the upper ends of the two round rods 2 are respectively inserted into the two positioning cylinders 12 to position and install the round rods 2. Then, bolts and other fasteners are used to fasten the round rods 2 to the top plate 1. Then, the two elastic elements 6 are respectively installed on the bottom ends of the two mounting cylinders 3 and the lower ends of the two pistons 5, and the pistons 5 at the lower ends of the two round rods 2 are respectively inserted into the two mounting cylinders 3. Then, the auxiliary column 35 is placed into the corresponding auxiliary cylinder 32, and the retaining ring 36 is assembled into the retaining groove to limit the installation between the auxiliary column 35 and the auxiliary cylinder 32. Then, the plug 31 is installed into the opening of the auxiliary cylinder 32. At this time, the first O-ring 351 and the second O-ring 352 are used to make the auxiliary column 35 sealed to the auxiliary cylinder 32 and the round rod 2 respectively, so as to achieve double sealing of the inert gas in the space located at the lower end of the piston 5 in the mounting cylinder 3, effectively reducing the probability of inert gas leakage to the outside, effectively reducing the probability of weakening of the gas damping of the front fork, and effectively ensuring the performance.

[0020] Under the action of piston 5, the space at the lower end of piston 5 in the mounting cylinder 3 is sealed. Then, the sealed space is evacuated by air pipe 34. Inert gas is then filled into the vacuum-sealed space through air pipe 34. The control valve is then closed. The mounting rod 11 is then installed on the upper end of the top plate 1. The bicycle frame is then installed on the outer end of the mounting rod 11. Finally, the handlebars are assembled on the upper end of the mounting rod 11. When a deviation occurs between the two mounting plates 33, the corresponding screw 43 can be rotated. Since the screw 43 is threadedly connected to the auxiliary block 37, the rotation of the screw 43 causes the auxiliary block 37 to move up and down, which in turn causes the corresponding mounting cylinder 3 to move up and down, thereby moving the corresponding mounting plate 33 to the appropriate position. Then, the two mounting cylinders 3 are installed on the left and right ends of the bicycle's front wheel through the two mounting plates 33. The rear wheel of the bicycle is then assembled onto the rear of the frame, and the rear wheel is connected to the drive unit on the frame, thus completing the bicycle assembly. This allows for the adjustment of the corresponding positions of the two mounting cylinders 3, effectively reducing the probability of obstructing the installation of the front wheel due to factors such as front fork assembly errors, and effectively ensuring assembly efficiency and the performance of the front fork.

[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bicycle front fork frame, characterized in that, include: The top plate (1) has a rectangular structure; Two round rods (2) are provided, and the two round rods (2) are symmetrically and detachably connected to the lower end of the top plate (1); Mounting cylinder (3), there are two mounting cylinders (3), the two mounting cylinders (3) are slidably connected to the lower ends of two round rods (2), and the round rods (2) extend into the mounting cylinders (3); The piston (5) is connected to the lower end of the round rod (2). The piston (5) is slidably connected inside the mounting cylinder (3). The space inside the mounting cylinder (3) located at the lower end of the piston (5) is filled with inert gas. Elastic element (6), said elastic element (6) is installed between the lower end of the piston (5) and the bottom end of the inner cavity of the mounting cylinder (3); Adjusting components, the rear ends of which are connected to the front ends of the two mounting cylinders (3); An auxiliary component is arranged in connection with the upper end of the mounting cylinder (3), and the auxiliary component is located at the outer end of the round rod (2).

2. The bicycle front fork frame according to claim 1, characterized in that: The auxiliary component includes an auxiliary cylinder (32), which is connected to the upper end of the mounting cylinder (3) and is located outside the round rod (2). The outer end of the round rod (2) is slidably connected to an auxiliary column (35), and the auxiliary column (35) is located inside the auxiliary cylinder (32). The inner wall of the auxiliary column (35) is recessed outward to form multiple first mounting grooves. Each of the multiple first mounting grooves is equipped with a first sealing element, and the first sealing element is fitted onto the outer end of the round rod (2). The outer end of the auxiliary column (35) is recessed inward to form multiple second mounting grooves. Each of the multiple second mounting grooves is equipped with a second sealing element, and the second sealing element is attached to the inner wall of the auxiliary cylinder (32).

3. The bicycle front fork frame according to claim 2, characterized in that: The inner wall of the auxiliary cylinder (32) is recessed outward to form a groove. A limiting member is installed on the groove and the limiting member is attached to the upper end of the auxiliary column (35). The outer end of the round rod (2) is slidably connected to the plug (31), and the plug (31) has a T-shaped cross-section. The horizontal part of the plug (31) is attached to the upper end of the auxiliary cylinder (32), and the vertical part of the plug (31) is located inside the auxiliary cylinder (32) and above the limiting member. The vertical part of the plug (31) is interference-fitted with the auxiliary cylinder (32).

4. The bicycle front fork frame according to claim 1, characterized in that: The adjusting component includes a connecting plate (4), two rectangular tubes (41) are symmetrically installed at the rear end of the connecting plate (4), and the cross-section of the connecting plate (4) is arc-shaped. The two rectangular tubes (41) are respectively attached to the upper front end of the mounting tube (3). The front ends of the two mounting tubes (3) are fixedly connected to auxiliary blocks (37), and the two auxiliary blocks (37) are respectively located inside the two rectangular tubes (41). The two rectangular tubes (41) are rotatably connected to screws (43), and the two screws (43) pass through the two auxiliary blocks (37) respectively, and the screws (43) are threadedly connected to the auxiliary blocks (37).

5. The bicycle front fork frame according to claim 4, characterized in that: Guide rods (42) are installed inside both rectangular tubes (41), and the guide rods (42) are located outside the screw (43). The two guide rods (42) pass through the two auxiliary blocks (37) respectively, and the guide rods (42) are slidably connected to the auxiliary blocks (37).

6. The bicycle front fork frame according to claim 1, characterized in that: Two positioning cylinders (12) are symmetrically installed at the lower end of the top plate (1), and the two positioning cylinders (12) are located at the upper outer ends of the two round rods (2). The middle of the upper end of the top plate (1) is detachably connected to the mounting rod (11), and the mounting rod (11) is located between the two positioning cylinders (12).

7. The bicycle front fork frame according to claim 1, characterized in that: A hanging plate (33) is installed at the lower front end of each of the two mounting cylinders (3), and an air pipe (34) is connected to the lower end of each of the two mounting cylinders (3), and a control valve is installed on the air pipe (34).

Images