TWM247491U - Improved axle tube structure for bicycle - Google Patents

Description

4. Description of Creation (1) ^ ______ [Technical Field to which the New Type belongs] This creation is a structural improvement of a bicycle casing set used as a bicycle consumption A g, especially a structural improvement using the [prior art] officer. With the evolution of the times, we have changed our role from today ’s sporting and leisure products to lightweight products. Lightweight is definitely the most important design trend of bicycles. The purpose of lightweighting is to reduce the number of vehicles. Therefore, in order to achieve self-reliance, make no effort. The car dealers have always used the material 'structure and early' since the frame of the car is formed by welding metal pipe fittings. However, the high temperature of the joint processing can easily cause defects or deformation of the metal pipe, and then affect the service life of the bicycle. Therefore, some companies use metal joints to connect metal pipes, and then use adhesive to bond metal pipe fittings with metal joints to avoid problems caused by welding metal pipe fittings. However, because the weight of metal is too heavy, it does not meet the requirements of lightweight bicycles. Design principles, so this approach cannot meet the needs of most businesses and consumers. In order to solve the above problems, some companies use carbon fiber and other composite materials to make bicycle frames. Carbon fiber was originally used in the military aerospace field. After the dissolution of the US-Soviet relations in the 1960s, it was widely used in sports equipment or building materials. Improved, the hardness of the composite material made of carbon fiber and resin is quite amazing, it is 10 times harder than the traditional steel with the same weight, and has the advantages of corrosion resistance and light weight, so the bicycle frame made of carbon fiber composite material , Its weight is less than half of the traditional chrome steel frame, which is quite suitable for the purpose of lightweight bicycles.

g. For the purpose of explanation, the method of using composite materials to make a composite material into a mold and connecting = bicycle car wood is mainly shown in the first figure, but the former bracket t is then processed into a bicycle frame. When the bicycle crank d is made in this way, when making the frame, w. Parts, such as the second five-way pipe shaft preset in the mold, material 14 will be _ not in the molding process;? Then use a large number of composite cymbals to cover and fix the shaft official 12 and the shaft tube 12 to be firmly set in the five-way tube, but one; = Although the position can be shifted, the final formed frame will become the shaft tube. The large amount of composite material 14 around 12 will also increase j = volume, which runs counter to the original intention of lightweight bicycles. In view of this, the overall weight of the car is based on the above-mentioned conventional technologies. The structure of the axle tube is improved. "Effectively overcome the conventional knowledge. [New content] Bai Lijun is missing. The main purpose of the creation is to provide— This kind of bicycle good is to use a tube set to form the axle tube of a bicycle. Ί = = Use a large number of composite materials to fix the axle tube to the other five works. It is to provide a bicycle axle tube. The shaft tube is installed on the five-way tube after the production of the five-way tube is completed. In order to avoid the conventional technology, the shaft tube is fixed in the ^ through-tube, and the position of the shaft tube cannot be readjusted. Solve the problem of possible tube displacement.

According to this creation, the structure of a bicycle axle tube is improved from the first and the right casing, which are respectively inserted into the two sides of the shaft hole of the bicycle five-way tube. I M247491 3. Creation instructions (3) The front section of the right casing It can be attached to the right tube under the shaft hole to make it easier to understand this effect. [Embodiment] When the five-way pipe of the creative department is installed and installed on the five-way pipe as a five-way pipe, the added compound is as shown in the fourth figure. The frame handles of the frames of a bicycle pass through, the pedals, and then With the shaft hole 21 required internally, the original design consists of a shaft tube 21 and a two-tube structure. The left sleeve wall created with reference to the fifth 20 shaft hole 21 can be sleeved in the left sleeve, and the left sleeve tube wall sleeve can be placed on the rear tube wall. Together to form the axle tube structure of the bicycle. For the description of the specific embodiment, compare the attached drawings with the purpose, technical content, characteristics of the creation of the bicycle axle tube, and then complete the knot of the bicycle shaft tube. Heavy composite material weight. As shown in the figure, there is a link at the bottom of the body frame of this creation. The five-way pipe 20 allows the bicycle rider to move the crank shaft and the connection is provided with a threaded design. The side with the structural design is sleeved. The structure is improved by a sleeve connection, which is sleeved on the corresponding sleeves of the bicycle to avoid the conventional technology of fixing the shaft tube in the five-way tube. The embodiment is not intended. It has a shaft hole 21, which can be used to bend the drive structure connected to the crank, and the shaft tube is used for the crank shaft to rotate the left sleeve 22 and the right sleeve 24 minutes. The required axis diagram and the sixth diagram '纟 are the creations of the five-pass tube Xibu = diagram, cross-sectional schematic diagram' φ diagram can be seen, & 22 has an outer ring portion 26 and a link to the outer ring portion "One side

7 Page 7 M247491 4. Creation instructions (4) Official wall 28; and the right sleeve 24 also has a tube wall 32 with a thickness variation.卩 30 and the different connection with the outer ring portion 30 are divided into the first-stage pipe wall 32 and the second-stage pipe 24. The pipe wall of the second-stage pipe 24 has the same inner diameter according to the thickness 34, but the first total = s soil 4, this-stage pipe Wall 32, wall 34. The diameter of the first section of pipe 32 and the second section of soil 32 is larger than that of the second section of pipe & the soil is connected to the outer ring Qiu q straight out of the tube wall 28 of the left casing 22. The dip cloth is on the outer diameter The pipe wall 32 of the same section and the outer diameter of the wall is connected to the first diameter, so the pipe wall 34 of the second section can only hold = the pipe wall 28 of the straight casing 22 within the pipe 22 can be abutted ^ f In the left sleeve tube wall 28 'and the left connection surface', the second tube wall 32 and the second section of the tube wall are described above, except 4; the second L4: inter-joined at-from inside the shaft. Stable =: knot: up: designed to make the two sleeves stick the left and right sleeves 22 and 24 together, and it can be formed by using glued tubes 22 and 24 such as glue, and then use the adhesive The glue will add the stability of the left and right sleeves to the shaft tube, and can be inserted into the shaft hole 21 ', so as to increase the function of the crank shaft. 乂 Make sure that the shaft tube can stably function for supply. See also ϋ shaft tube structure There is no bag around; first 3 can clearly find 'the material of this creation, because this creation is in five: ;;; technique: a large number of composite materials 22, 24 sets of mandrel holes 21 revealed ^ 2 = only after completion Take advantage of left and right sleeves The composite material fixes the shaft tube = hole = a large number of composite materials are required to fix the shaft tube during the production of the five-way tube. The shaft is selected as +. This can reduce the use of the shaft tube fixed by the composite material and avoid the problem of offset defects. In the shaft hole 21, it is difficult to rework and form defects

The description of U2a1A9X 4 1 丨 (5), the above-mentioned embodiments are only the preferred embodiments of this creation, and should be included in the scope of the patent application for this creation to limit the scope of implementation of this creation. Therefore, according to the creation of the patent application, the shape, structure, characteristics, and spirit of the same changes and modifications of the drawing number description 10 shaft hole 14 composite material 21 shaft hole 24 right sleeve 28 tube wall 32 brother-section tube Wall 12 Shaft tube 20 Five-way tube 2 2 Left sleeve 26 Outer ring 30 Outer ring 34 Second wall

Page 9 M247491 Brief description of the diagram The first diagram is a schematic diagram of a conventional frame covered with a shaft tube by a composite material. The second figure is a schematic view of the five-way pipe of the first figure. The third figure is a schematic sectional view of the A_A 'line segment of the second figure. The fourth figure is a schematic diagram of the creative embodiment. The fifth figure is a schematic view of the five-way pipe in the fourth figure. The sixth figure is a schematic cross-sectional view of the fifth A-A 'line segment.

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Claims (1)

M247491 V. Application for patent scope 1. A structural improvement of a bicycle shaft tube, which is fixed in a shaft hole of a five-way tube, and includes a left sleeve and a right sleeve, which can be respectively divided by two of the shaft hole. Side-sleeve and can be fixed together. 2. The structural improvement of the bicycle axle tube described in item 1 of the scope of the patent application, wherein the right sleeve has two sections of first wall and second wall, which are different in thickness and connected together, and the first section of tube The outer diameter of the wall is larger than the outer diameter of the pipe wall of the second section, but the inner diameter of the two sections is the same, and the second pipe wall can be sleeved in the left sleeve. 3. The structural improvement of the bicycle axle tube described in item 2 of the scope of the patent application, wherein the diameter of the outer wall of the first section is equal to the outer diameter of the left sleeve, and one end of the left sleeve tube wall is just topped Connected to the first section of pipe wall. 4. As the structure improvement of the bicycle axle tube described in item 1 of the scope of patent application, the shaft tube structure can be improved and fixed in the axle hole by using adhesive. Page 11