阅读说明：本技术 一种折叠式碳纤维自行车车架 (Foldable carbon fiber bicycle frame ) 是由 徐亚 于 2021-09-17 设计创作，主要内容包括：本发明属于自行车技术领域,具体涉及一种折叠式碳纤维自行车车架,包括由主管、横管和支撑管组成的前三角架以及由两个第一套管和后轮安装架组成的后三角架,两个第一套管分别与后轮安装架的上下固定端固接,且两者为同轴设置,主管的中部固接有筒状油缸,筒状油缸内部设有环状缸槽,圆环状缸槽密封滑动连接有两个上下分部的环形活塞,两个环形活塞与圆环状缸槽的中部空间围合成第一油腔,环形活塞与圆环状缸槽的端部空间围合成第二油腔,两个环形活塞均设有锁销,筒状油缸前侧开设有两个与锁销相匹配的第一运动槽,该自行车车架能够进行折叠,这样便能减小整个自行车的体积,方便将其放入汽车内,便携性较高。(The invention belongs to the technical field of bicycles, and particularly relates to a folding carbon fiber bicycle frame, which comprises a front tripod consisting of a main pipe, a transverse pipe and a supporting pipe and a rear tripod consisting of two first sleeves and a rear wheel mounting frame, wherein the two first sleeves are fixedly connected with the upper fixed end and the lower fixed end of the rear wheel mounting frame respectively and are coaxially arranged, the middle part of the main pipe is fixedly connected with a cylindrical oil cylinder, an annular cylinder groove is arranged inside the cylindrical oil cylinder, the annular cylinder groove is hermetically and slidably connected with two annular pistons which are distributed up and down, the two annular pistons and the middle space of the annular cylinder groove enclose a first oil cavity, the annular piston and the end space of the annular cylinder groove enclose a second oil cavity, the two annular pistons are provided with lock pins, the front side of the cylindrical oil cylinder is provided with two first motion grooves matched with the lock pins, and the bicycle frame can be folded, so that the volume of the whole bicycle can be reduced, the portable automobile seat is convenient to place in an automobile and high in portability.)

1. The utility model provides a foldable carbon fiber bicycle frame which characterized in that: the two first sleeves are fixedly connected with the upper fixed end and the lower fixed end of the rear wheel mounting frame respectively and are coaxially arranged;

the middle part of the main pipe is fixedly connected with a cylindrical oil cylinder, an annular cylinder groove is arranged in the cylindrical oil cylinder, the annular cylinder groove is connected with two annular pistons distributed up and down in a sealing and sliding mode, the two annular pistons and the middle space of the annular cylinder groove enclose to form a first oil cavity, the annular pistons and the end space of the annular cylinder groove enclose to form a second oil cavity, the middle parts of the side surfaces of the two annular pistons are respectively provided with a lock pin penetrating through the front side of the cylindrical oil cylinder, and the front side of the cylindrical oil cylinder is provided with two first motion grooves matched with the lock pins;

the two first sleeves are sleeved on the outer side of the cylindrical oil cylinder and are positioned on one side of the lock pin, which is far away from the first oil cavity, first lock grooves matched with the lock pin are formed in opposite ends of the front sides of the two first sleeves, a driving oil cylinder is fixedly connected to the middle of the transverse pipe, an oil cylinder piston is connected to the inside of the driving oil cylinder in a sealing and sliding mode, and a spiral spring abutted against the rear wall of the driving oil cylinder is fixedly connected to the front end of the oil cylinder piston;

the oil cylinder piston lower extreme is equipped with a plurality of tooth's sockets, the actuating cylinder lower extreme is connected with the gear with tooth's socket meshing through the support rotation, the gear rear side is equipped with changes the handle, actuating cylinder and violently manage the lower extreme and all set up with gear assorted second motion groove, the actuating cylinder rear end is connected with the first oil pipe of first oil pocket intercommunication, the actuating cylinder front end is connected with two second oil pipes with two second oil pockets intercommunication respectively, first oil pocket, second oil pipe, actuating cylinder, first oil pipe and the inside hydraulic oil that all fills of second oil pipe.

2. A foldable carbon fiber bicycle frame according to claim 1, characterized in that: two second locking grooves matched with the locking pins are formed in the side face of the cylindrical oil cylinder, and the included angle between the first locking groove and the second locking groove is 150-170 degrees.

3. A foldable carbon fiber bicycle frame according to claim 1, characterized in that: violently the pipe left and right sides has all been seted up and has been erected the groove, two erect the groove and all be located the left and right sides of gear, two erect equal sliding connection in the inslot and have the bracing piece, two the common fixedly connected with of bracing piece lower extreme is located the gear downside and with gear assorted jam plate, two the common fixedly connected with preforming of upper end of the support bar, fixedly connected with leaf spring between preforming and the violently pipe.

4. A foldable carbon fiber bicycle frame according to claim 1, characterized in that: and the side surfaces of the two first sleeves are provided with semi-ring grooves matched with the second oil pipe.

5. A foldable carbon fiber bicycle frame according to claim 1, characterized in that: the front tripod and the rear tripod are both made of carbon fiber materials.

6. A foldable carbon fiber bicycle frame according to claim 1, characterized in that: the front end of the front tripod is provided with a headstock tube.

7. A foldable carbon fiber bicycle frame according to claim 1, characterized in that: the rear wheel mounting rack is provided with a rear wheel mounting groove for mounting a rear wheel of the bicycle.

Technical Field

The invention belongs to the technical field of bicycles, and particularly relates to a folding carbon fiber bicycle frame.

Background

With the improvement of living standard, more and more people choose self-driving tour. At present, many people choose to carry a bicycle on the automobile during self-driving tour, the bicycle is flexible and convenient, and riders can reach places where the automobile is not convenient to reach, so that the travel pleasure is improved. But current bicycle frame is great, is not convenient for put into the car, carries comparatively inconveniently, to above-mentioned problem, we have provided a foldable carbon fiber bicycle frame.

Disclosure of Invention

The purpose of the invention is: aims to provide a folding type carbon fiber bicycle frame for solving the problems existing in the background technology.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:

a folding carbon fiber bicycle frame comprises a front tripod consisting of a main pipe, a transverse pipe and a supporting pipe and a rear tripod consisting of two first sleeves and a rear wheel mounting frame, wherein the two first sleeves are fixedly connected with the upper fixed end and the lower fixed end of the rear wheel mounting frame respectively and are coaxially arranged;

the middle part of the main pipe is fixedly connected with a cylindrical oil cylinder, an annular cylinder groove is arranged in the cylindrical oil cylinder, the annular cylinder groove is connected with two annular pistons distributed up and down in a sealing and sliding mode, the two annular pistons and the middle space of the annular cylinder groove enclose to form a first oil cavity, the annular pistons and the end space of the annular cylinder groove enclose to form a second oil cavity, the middle parts of the side surfaces of the two annular pistons are respectively provided with a lock pin penetrating through the front side of the cylindrical oil cylinder, and the front side of the cylindrical oil cylinder is provided with two first motion grooves matched with the lock pins;

the two first sleeves are sleeved on the outer side of the cylindrical oil cylinder and are positioned on one side of the lock pin, which is far away from the first oil cavity, first lock grooves matched with the lock pin are formed in opposite ends of the front sides of the two first sleeves, a driving oil cylinder is fixedly connected to the middle of the transverse pipe, an oil cylinder piston is connected to the inside of the driving oil cylinder in a sealing and sliding mode, and a spiral spring abutted against the rear wall of the driving oil cylinder is fixedly connected to the front end of the oil cylinder piston;

the oil cylinder is characterized in that a plurality of tooth grooves are formed in the lower end of the oil cylinder piston, the lower end of the driving oil cylinder is rotatably connected with a gear meshed with the tooth grooves through a support, a rotating handle is arranged on the rear side of the gear, second moving grooves matched with the gear are formed in the lower ends of the driving oil cylinder and the transverse pipe, the rear end of the driving oil cylinder is connected with a first oil pipe communicated with a first oil cavity, and the front end of the driving oil cylinder is connected with two second oil pipes communicated with two second oil cavities respectively.

Two second locking grooves matched with the locking pins are formed in the side face of the cylindrical oil cylinder, and the included angle between the first locking groove and the second locking groove is 150-170 degrees.

Violently the pipe left and right sides has all been seted up and has been erected the groove, two erect the groove and all be located the left and right sides of gear, two erect equal sliding connection in the inslot and have the bracing piece, two the common fixedly connected with of bracing piece lower extreme is located the gear downside and with gear assorted jam plate, two the common fixedly connected with preforming of upper end of the support bar, fixedly connected with leaf spring between preforming and the violently pipe.

And the side surfaces of the two first sleeves are provided with semi-ring grooves matched with the second oil pipe, and the semi-ring grooves are used for allowing the second oil pipe to pass through.

The front tripod and the rear tripod are both made of carbon fiber materials.

The front end of the front tripod is provided with a headstock tube.

The rear wheel mounting rack is provided with a rear wheel mounting groove for mounting a rear wheel of the bicycle.

The invention provides a folding carbon fiber bicycle frame which can be folded, so that the volume of the whole bicycle can be reduced, the bicycle can be conveniently placed in an automobile, and the portability is high.

Drawings

The invention is further illustrated by the non-limiting examples given in the figures.

FIG. 1 is a schematic structural view of a foldable carbon fiber bicycle frame according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is an enlarged view of the structure at B in FIG. 2;

FIG. 5 is an enlarged view of the structure at C in FIG. 2;

FIG. 6 is an enlarged view of the structure at D in FIG. 2;

FIG. 7 is a schematic view of the present invention in a folded state;

FIG. 8 is a schematic structural view of the rear frame of the present invention;

FIG. 9 is a schematic view of the connection of the annular piston to the locking pin of the present invention.

The main element symbols are as follows:

the hydraulic oil cylinder comprises a main pipe 1, a transverse pipe 11, a support pipe 12, a first sleeve 2, a rear wheel mounting frame 21, a cylindrical oil cylinder 3, an annular cylinder groove 31, an annular piston 32, a lock pin 33, a first moving groove 34, a first lock groove 341, a driving oil cylinder 4, an oil cylinder piston 41, a spiral spring 411, a tooth groove 42, a gear 43, a rotating handle 44, a second moving groove 45, a first oil pipe 56, a second oil pipe 57, a second lock groove 6, a support rod 62, a lock plate 63, a pressing sheet 64, a sheet spring 65, a semi-ring groove 66, a headstock pipe 7 and a rear wheel mounting groove 71.

Detailed Description

In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.

As shown in fig. 1-9, the foldable carbon fiber bicycle frame of the present invention comprises a front tripod consisting of a main tube 1, a horizontal tube 11 and a support tube 12, and a rear tripod consisting of two first sleeves 2 and a rear wheel mounting frame 21, wherein the two first sleeves 2 are respectively fixedly connected with the upper and lower fixed ends of the rear wheel mounting frame 21, and are coaxially arranged;

the middle part of the main pipe 1 is fixedly connected with a cylindrical oil cylinder 3, an annular cylinder groove 31 is arranged in the cylindrical oil cylinder 3, the annular cylinder groove 31 is connected with two annular pistons 32 distributed up and down in a sealing and sliding mode, the two annular pistons 32 and the middle space of the annular cylinder groove 31 are enclosed to form a first oil chamber, the annular pistons 32 and the end space of the annular cylinder groove 31 are enclosed to form a second oil chamber, lock pins 33 penetrating through the front side of the cylindrical oil cylinder 3 are arranged in the middle parts of the side surfaces of the two annular pistons 32, and two first motion grooves 34 matched with the lock pins 33 are arranged on the front side of the cylindrical oil cylinder 3;

the two first sleeves 2 are sleeved on the outer side of the cylindrical oil cylinder 3 and are positioned on one side of the lock pin 33 far away from the first oil cavity, first lock grooves 341 matched with the lock pin 33 are formed in opposite ends of the front sides of the two first sleeves 2, the middle part of the transverse pipe 11 is fixedly connected with a driving oil cylinder 4, an oil cylinder piston 41 is connected inside the driving oil cylinder 4 in a sealing and sliding mode, and a spiral spring 411 abutted to the rear wall of the driving oil cylinder 4 is fixedly connected to the front end of the oil cylinder piston 41;

the lower end of the oil cylinder piston 41 is provided with a plurality of tooth grooves 42, the lower end of the driving oil cylinder 4 is rotatably connected with a gear 43 meshed with the tooth grooves 42 through a support 43, the rear side of the gear 43 is provided with a rotating handle 44, the lower ends of the driving oil cylinder 4 and the transverse pipe 11 are both provided with second moving grooves 45 matched with the gear 43, the rear end of the driving oil cylinder 4 is connected with a first oil pipe 56 communicated with a first oil cavity, and the front end of the driving oil cylinder 4 is connected with two second oil pipes 57 respectively communicated with two second oil cavities.

The two first sleeves 2 are sleeved on the outer side of the cylindrical oil cylinder 3, so that the rear tripod can rotate relative to the front tripod;

in the initial state, the coil spring 411 will push the cylinder piston 41 backward, so that the hydraulic oil at the rear of the driving cylinder 4 is squeezed into the first oil chamber by the first oil pipe 56, the first oil chamber is filled with hydraulic oil and forces the two annular pistons 32 to move up and down, respectively, the lock pins 33 at the side surfaces of the two annular pistons 32 are inserted into the two first lock grooves 341, at this time, the front tripod and the rear tripod are fixed into a frame in an unfolded state, and in this state, the tooth socket 42 will drive the rotating handle 44 of the gear 43 to rotate to a state of inclining to the rear lower side;

when a user needs to fold the bicycle frame, the transverse tube 11 and the rotating handle 44 are simultaneously kneaded by one hand, at this time, the rotating handle 44 drives the gear 43 to rotate clockwise, the gear 43 rotates clockwise, the oil cylinder piston 41 is driven to move forward by overcoming the elasticity of the spiral spring 411 through the tooth socket 42, when the oil cylinder piston 41 moves forward, the hydraulic oil at the front part of the driving oil cylinder 4 is pushed forward towards 1, the hydraulic oil is respectively extruded into the two second oil cavities through the two second oil tubes 57, the hydraulic oil entering the second oil cavities pushes the two annular pistons 32 towards the middle part, the lock pins 33 at the side surfaces of the two annular pistons 32 are withdrawn from the two first lock grooves 341, at this time, the front tripod and the rear tripod are released from fixation, at this time, the hydraulic oil in the first oil groove flows back to the rear part of the driving oil cylinder 4 through the first oil tube 56, and in the unlocking state, the user can directly fold the two into a folding state, the size of the whole bicycle can be reduced, the bicycle can be conveniently placed in an automobile, the carrying is convenient, the unlocking operation during folding can be completed only by kneading with one hand, the operation is very simple, the use by a user is facilitated, the two triangular supports are connected by sleeving the two first sleeves 2 on the main pipe 1, and the connecting mode has larger contact area and stronger connecting strength, so that the whole bicycle frame is more firm and durable;

the side surface of the cylindrical oil cylinder 3 is provided with two second locking grooves 6 matched with the locking pins 33, and the included angle between the first locking groove 341 and the second locking groove 6 is 155 degrees; after two tripods are in the unblock state and with two infolding 155 degrees, two lockpins 33 can align with two second locked groove 6 respectively, if the user loosens the rotatory handle 44 hand of kneading this moment, coil spring 411 just can kick-back and drive hydro-cylinder piston 41 backward movement, make two lockpins 33 insert respectively in two second locked groove 6, just so can be with preceding tripod and back tripod locking for fixed state, whole locking process only needs to loosen the hand of kneading rotatory handle 44, the operation process is simple and convenient equally, do benefit to the user and use, the operation that expandes two tripods is with above-mentioned operation with the same reason, therefore here is no longer repeated.

Vertical grooves are formed in the left side and the right side of the transverse pipe 11, the two vertical grooves are located on the left side and the right side of the gear 43, supporting rods 62 are connected in the two vertical grooves in a sliding mode, the lower ends of the two supporting rods 62 are jointly and fixedly connected with locking plates 63 which are located on the lower side of the gear 43 and matched with the gear 43, pressing sheets 64 are jointly and fixedly connected to the upper ends of the two supporting rods 62, and sheet springs 65 are fixedly connected between the pressing sheets 64 and the transverse pipe 11;

under the initial condition, leaf spring 65 can cooperate violently pipe 11 to jack up preforming 64 upwards, make two bracing pieces 62 drive jam plate 63 upward movement, make jam plate 63 insert in the gear 43, just so can lock gear 43, avoid changeing 44 and being touched by accident and drive the unexpected rotation of gear 43, and then prevent that two tripods from being by unexpected unblock, the user can mediate violently pipe 11 and commentaries on classics 44 when the unblock, because preforming 64 is located the upside of gear 43, so preforming 64 can be mediated simultaneously, preforming 64 just can overcome leaf spring 65's elasticity and drive jam plate 63 downstream through two bracing pieces 62 this moment, just so can carry out automatic unblock to gear 43, make the user just can carry out the unblock to gear 43 earlier automatically when carrying out the unblock to two tripods through such setting, in order to facilitate the user to use.

The side surfaces of the two first casings 2 are provided with semi-ring grooves 66 matched with the second oil pipes 57, and the semi-ring grooves 66 are used for the second oil pipes 57 to penetrate through.

The front tripod and the rear tripod are both made of carbon fiber materials.

The front end of the front tripod is provided with a headstock tube 7.

The rear wheel mounting bracket 21 is provided with a rear wheel mounting groove 71 for mounting a rear wheel of the bicycle.

The foregoing embodiments are merely illustrative of the principles of the present invention and its efficacy, and are not to be construed as limiting the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.