TWM621614U - Thermoplastic fiber composite frame - Google Patents

Abstract

A thermoplastic fiber composite frame, comprising an upper pipe fitting, a lower pipe fitting, a vertical pipe fitting, two rear seat fork pipe fittings, two rear fork pipe fittings, a head pipe fitting, a connecting piece, a five-way pipe fitting, and two rear wheel hooks Claw pieces. The upper tube, the lower tube, the riser, the seat stay tubes and the seat stay tubes are made by winding and laminating thermoplastic fiber prepreg sheets and then hot pressing. The head tube is connected to the front end of the upper tube and the front end of the lower tube. The connecting piece is connected to the rear end of the upper pipe piece, the top end of the riser pipe piece and the front end of the seat fork pipe pieces. The five-way pipe is connected to the rear end of the lower pipe, the bottom end of the riser and the rear ends of the seat fork pipes. Each rear wheel dropper is connected to the rear end of the corresponding one of the seat fork tubes and the rear end of the corresponding one of the seat fork tubes.

Description

Thermoplastic fiber composite frame

The new model relates to a vehicle frame, in particular to a thermoplastic fiber composite material vehicle frame.

Today's carbon fiber bicycle frames are mostly made of thermosetting carbon fiber composite materials. However, after the thermosetting carbon fiber composite material is heated and cured, it cannot be heated and softened again. The rack can not be recycled, which will cause environmental protection problems of recycling.

In order to improve the above-mentioned problems, some manufacturers have developed a bicycle thermoplastic composite frame member (Taiwan New Patent No. M576098). As shown in Figures 1 and 2, a frame 1 manufactured by the manufacturer includes a front triangle Frame member 2, a rear upper forklift frame member 3 connected with the front triangle frame member 2, a rear lower forklift frame member 4 connected with the front triangle frame member 2, and two connected with the rear upper forklift frame member 3 and the rear fork connecting piece 5 of the rear lower forklift frame member 4 . The front triangular frame member 2 is split into two shell members 2I, 2II that can be butted with each other in a left and right half way, and each shell member 2I, 2II has at least two butt sides for abutment. Edge 201, the rear upper forklift frame member 3 is split into two shells 3I, 3II that can be matched with each other in the manner of upper and lower halves, and each shell 3I, 3II has at least two for matching Butt side edge 301, the rear lower forklift frame member 4 is split into two shells 4I, 4II that can be butted against each other by means of upper and lower halves, each shell 4I, 4II has at least two The butt side edges 401 are closed.

As shown in FIGS. 2 and 3 , in the forming process of the frame 1 , a thermoplastic composite plate 6 is hot-pressed into the shells 2I and 2II by means of mold hot-pressing. The material of the composite sheet 6 is thermoplastic carbon fiber material or thermoplastic glass fiber material. Similarly, the frame 1 is also hot-pressed to form the thermoplastic composite sheet 6 into these shells by means of mold hot-pressing. 3I, 3II and the shells 4I, 4II; then, as shown in Figure 4, the shells 2I, 2II, the shells 3I, 3II and the shells 4I, 4II are respectively butt-jointed and combined, so that the The shells 2I, 2II, the shells 3I, 3II and the shells 4I, 4II correspond to the butt side edges 201, the butt side edges 301 and the butt side edges 401 which are overlapped alternately. 2II. When these shells 3I, 3II are butt-jointed with these shells 4I, 4II, a built-in inner surface is arranged inside the shells 2I, 2II, the shells 3I, 3II and the shells 4I, 4II. Then, as shown in Figures 4 and 5, the shell parts 2I, 2II, the shell parts 3I, 3II and the butting side edges 201, 301 and 401 of the shells 4I, 4II butted against each other are formed by thermocompression welding to form an integral body, so that the shells 2I, 2II, the shells 3I, 3II and the shells 4I, 4II are respectively joined to form the front triangle frame member 2 (see Figure 1), the rear upper forklift frame member 3 (see Figure 1) and the rear lower forklift frame member 4 (see Figure 1). Figure 1), in this process, the butting side edges 201, 301 and 401 of the shells 2I, 2II, the shells 3I, 3II and the shells 4I, 4II are butted against each other. Then, the inner support located inside the front triangle frame member 2, the rear upper forklift frame member 3 and the rear lower forklift frame member 4 will be respectively turned into a thickened welding convex body 202, 302, 402; Piece 7 is removed.

Although the frame 1 can be formed into the front triangle frame member 2, the rear upper forklift frame member 3 and the rear lower forklift frame member 4 by using the above-mentioned molding method, the shell members 2I, 2II. During the process of thermo-compression welding of the butt side edges 201, 301 and 401 of the shell pieces 3I, 3II and the shell pieces 4I, 4II that are butted against each other, only the butt side edges of the butt joints 201. The butt side edge 301 and the butt side edge 401 are partially unbonded. In the future, when the front triangle frame member 2, the rear upper forklift frame member 3 and the rear lower forklift frame member 4 are subjected to external forces, the Stress concentration will occur in this place, resulting in structural damage, and when the shells 2I, 2II, the shells 3I, 3II and the shells 4I, 4II need to face each other The more the number of pairs of the butted side edges 201 , 301 and 4 of the butted side edges 4 that are joined together, the more likely the above-mentioned problem of stress concentration will occur.

Accordingly, it is an object of the present invention to provide a thermoplastic fiber composite frame that overcomes at least one of the disadvantages of the prior art.

Therefore, the novel thermoplastic fiber composite frame includes an upper pipe fitting, a lower pipe fitting, a riser pipe fitting, two rear seat fork pipe fittings, two rear fork pipe fittings, a head pipe fitting, a connecting piece, a five-way pipe fitting, and two Rear wheel dropout.

The upper pipe is made of several thermoplastic fiber prepreg sheets that are wound and laminated and then hot pressed.

The lower tube is located under the upper tube, and the lower tube is made by winding and laminating several thermoplastic fiber prepreg sheets and then hot pressing.

The riser is located behind the upper pipe and the lower pipe, and the riser is made by winding and laminating several thermoplastic fiber prepreg sheets and then hot pressing.

The seat fork tubes are located behind the seat tube, and each seat fork tube is made by winding and laminating several thermoplastic fiber prepreg sheets and then hot pressing.

The chainstay tubes are located behind the seat tube and below the seatstay tubes, and each chainstay tube is made of a number of thermoplastic fiber prepreg sheets that are wound and laminated and then hot-pressed.

The head tube is connected to the front end of the upper tube and the front end of the lower tube.

The connecting piece is connected to the rear end of the upper pipe piece, the top end of the riser pipe piece and the front end of the seat fork pipe pieces.

The five-way pipe is connected to the rear end of the lower pipe, the bottom end of the riser and the rear ends of the seat fork pipes.

Each rear wheel dropper is connected to the rear end of the corresponding one of the seat fork tubes and the rear end of the corresponding one of the seat fork tubes.

The effect of the new model is that the new model utilizes that the upper pipe fitting, the lower pipe fitting, the riser pipe fitting, the rear seat fork pipe fittings and the rear lower fork pipe fittings are wound and laminated by the thermoplastic fiber prepreg sheets The design made by hot pressing can make the head end of the latter piece of the thermoplastic fiber prepreg sheet and the tail end of the former piece of the thermoplastic fiber prepreg sheet staggered in the circumferential direction to effectively avoid molding The upper pipe fitting, the lower pipe fitting, the seat pipe fitting, the seat fork fittings and the rear fork fittings form a stress concentration point due to the thickening of the thickness at a specific point, so that when the frame is in use When the rider is subjected to external force during riding, the upper tube, the lower tube, the riser, the seat fork tubes and the chain fork tubes are not prone to structural damage due to stress concentration.

6 , 7 , and 8 , it is an embodiment of a novel thermoplastic fiber composite frame 100 . The frame 100 includes an upper pipe 10 , a lower pipe 20 , a riser 30 , two rear fork pipes 40 , Two chainstay tubes 50 , a head tube 60 , a connecting member 70 , a bottom bracket tube 80 , and two rear wheel dropout members 90 .

As shown in FIGS. 7 , 8 and 9 , the upper tube 10 is made of several thermoplastic fiber prepreg sheets 200 (see FIGS. 10 and 11 ) which are wound and laminated and then hot-pressed.

The lower pipe part 20 is located under the upper pipe part 10 , and the lower pipe part 20 is made of several thermoplastic fiber prepreg sheets 200 (see FIGS. 10 and 11 ) which are wound and laminated and then hot-pressed.

The riser 30 is located behind the upper pipe 10 and the lower pipe 20 . The riser 30 is made of several thermoplastic fiber prepreg sheets 200 (see FIGS. 10 and 11 ) that are wound and laminated and then hot-pressed.

The seat stay tubes 40 are located behind the seat tube 30 , and each seat stay tube 40 is made by winding and laminating several thermoplastic fiber prepreg sheets 200 (see FIGS. 10 and 11 ) and then hot pressing.

The chainstay tubes 50 are located behind the seat tube 30 and below the seatstay tubes 40, and each chainstay tube 50 is made of several thermoplastic fiber prepreg sheets 200 (see FIG. 10, 11) It is made by winding and laminating and then hot pressing.

The head tube 60 is connected to the front end of the upper tube 10 and the front end of the lower tube 20 . In this embodiment, the head tube member 60 has a head tube portion 61 , an upper tube front connecting portion 62 connected to the head tube portion 61 and extending backward, and a head tube portion 61 connected to and extending backward. Downtube front connection part 63.

The connecting member 70 is connected to the rear end of the upper tube member 10 , the top end of the seat tube member 30 and the front end of the seat fork tube members 40 . In the present embodiment, the connector 70 has a riser upper connecting portion 71 , an upper pipe rear connecting portion 72 connected to the riser upper connecting portion 71 and extending forward, and a riser upper connecting portion 71 is connected to a seatstay front connecting portion 73 extending rearward.

The bottom bracket 80 is connected to the rear end of the lower tube 20 , the bottom end of the riser 30 and the rear ends of the seat fork tubes 40 . In this embodiment, the five-way pipe 80 has a crank pipe portion 81 , a lower pipe rear connecting portion 82 connected with the crank pipe portion 81 and extending forward, and a lower pipe rear connecting portion 82 connected with the crank pipe portion 81 and extending upward The lower connecting part 83 of the seat pipe, and a front connecting part 84 of the chainstay which is connected with the crank pipe part 81 and extends rearward. The front connecting part 84 of the chainstay has two connecting pipe sections 841 .

Each rear wheel dropout member 90 is connected to the rear end of the corresponding one of the seat stay tubes 40 and the rear end of the corresponding one of the chainstay tubes 50 . In this embodiment, each rear wheel dropout member 90 has a hook portion 91 , a seat stay rear connecting portion 92 connected with the hook portion 91 , and a chain stay rear connecting portion connected with the hook portion 91 . Section 93.

In this embodiment, the head tube 60 , the connecting member 70 , the bottom bracket 80 and the rear wheel dropout members 90 can be formed by long fiber injection molding, or by metal processing.

The upper pipe member 10 is connected between the upper pipe front connecting portion 62 and the upper pipe rear connecting portion 72 . The lower tube member 20 is connected between the lower tube front connecting portion 63 and the lower tube rear connecting portion 82 . The standpipe member 30 is connected between the standpipe upper connecting portion 71 and the standpipe lower connecting portion 83 . The front ends of the seat stay tubes 40 are connected to the seat stay front connecting portion 73 , and the front ends of the seat stay tubes 50 are connected to the connecting pipe section 841 of the chain stay front connection portion 84 . The seat stay rear connecting portion 92 of each rear wheel dropout member 90 is connected to the rear end of the corresponding one of the seat stay pipe members 40 , and the chain stay rear connecting portion 93 of each rear wheel dropout member 90 is connected to the rear end of the corresponding seat stay pipe member 40 . The rear end of the corresponding one of the chainstay tubes 50 is connected.

In this embodiment, glue 94 is used to bond the head tube 60 to the upper tube 10 and the lower tube 20 , and glue 94 is used to bond the connector 70 to the upper tube 10 , the riser 30 and the rear upper Fork tube 40, use glue 94 to bond the bottom bracket 80 and the lower tube 20, the riser 30 and the rear lower fork tube 50, and use glue 94 to bond each rear wheel dropout 90 to the corresponding One of the seat stay tubes 40 and the corresponding one of the seat stay tubes 50 .

In the present embodiment, the thermoplastic fiber prepreg sheet 200 of the upper tube 10 , the lower tube 20 , the riser 30 , the seat stay tubes 40 and the seat stay tubes 50 (see FIG. 10 ) , 11) The materials are all unidirectional carbon fiber filaments impregnated with thermoplastic resin, the weight percentage of the unidirectional carbon fiber filaments is between 40% and 70%, and the weight percentage of the thermoplastic resin is between 30% and 60%. But not limited to this, the material of the thermoplastic fiber prepreg sheet 200 of the upper tube 10 , the lower tube 20 , the riser 30 , the seat stay tubes 40 and the seat stay tubes 50 is also A carbon fiber woven cloth impregnated with thermoplastic resin can be used instead, the weight percentage of the carbon fiber woven cloth is between 40% and 70%, and the weight percentage of the thermoplastic resin is between 30% and 60%.

In this embodiment, as shown in FIGS. 9 , 10 and 11 , in the forming process of the upper tube 10 , the lower tube 20 , the riser 30 , the seat fork tubes 40 and the seat fork tubes 50 In the above, each thermoplastic fiber prepreg sheet 200 can be heated by a worktable 300 with a heating function through a release paper 400; then, a core mold 500 can be used to repeatedly wind the sheets on the release paper 400 Thermoplastic fiber prepreg sheet 200 to form the upper tube 10 , the lower tube 20 , the riser 30 , the seat stay tubes 40 and the seat stay tubes 50 500 and make the head end 210 of the latter piece of the thermoplastic fiber prepreg sheet 200 and the trailing end 220 of the former piece of the thermoplastic fiber prepreg sheet 200 staggered in the circumferential direction; The tube 10, the lower tube 20, the riser 30, the seat fork tubes 40 and the preforms of the seat fork tubes 50 together with the core mold 500 are pressed into the mold and hot-pressed; then, the upper tube 10 is taken out by opening the mold , the lower pipe piece 20, the riser piece 30, the rear seat fork pipe pieces 40 and the rear fork pipe pieces 50; then, the mandrel 500 is removed from the upper pipe piece 10, the lower pipe piece 20, the riser pipe piece 30, The seat fork tubes 40 and the seat fork tubes 50 are pulled out; then, the head tube 60 is bonded to the upper tube 10 and the lower tube 20 by glue 94 , and the connecting piece 70 is glued with glue 94 Adhere to the upper tube 10, the riser 30 and the rear seat fork tubes 40, and use the glue 94 to glue the bottom bracket 80 to the lower tube 20, the riser 30 and the rear fork tubes 50, Using glue 94, each rear wheel dropout member 90 is bonded with one of the corresponding seat stay tubes 40 and one of the corresponding seat stay tubes 50 to form the frame 100; finally, the frame 100 in an oven (not shown) to heat.

In this way, as shown in FIG. 6 , the manufacture of the vehicle frame 100 can be completed.

Through the above description, the advantages of the present invention can be summarized as follows:

1. Compared with the prior art, the present invention utilizes that the upper tube 10, the lower tube 20, the riser 30, the seat fork tubes 40 and the seat fork tubes 50 are made of the thermoplastic fibers The design of the prepreg sheet 200 is made by winding and laminating and then hot pressing, so that the head end 210 of the thermoplastic fiber prepreg sheet 200 of the latter piece is connected to the front end of the thermoplastic fiber prepreg sheet 200. The tail ends 220 are staggered in the circumferential direction, so as to effectively prevent the formed upper tube 10 , the lower tube 20 , the riser 30 , the seat stay tubes 40 and the chain stay tubes 50 , in certain places. A stress concentration point is formed due to the thickening of the thickness. In this way, when the frame 100 is subjected to an external force during the riding process of the user, the upper tube 10 , the lower tube 20 , the riser 30 , and the seat forks The tube member 40 and the chainstay tube members 50 are less likely to be structurally damaged due to stress concentration.

2. Compared with the prior art, the upper tube 10, the lower tube 20, the riser 30, the seat fork tubes 40 and the chain fork tubes 50 of the present invention do not need to carry out the shell of the conventional technology The steps of butt joint assembly can simplify the forming steps of frame pipe fittings.

To sum up, the novel thermoplastic fiber composite frame can not only avoid the structural damage of the frame tube due to stress concentration, but also simplifies the forming steps of the frame tube, so it can indeed achieve the purpose of the new model.

However, the above are only examples of the present invention, which should not limit the scope of the present invention. Any simple equivalent changes and modifications made according to the scope of the patent application for this new model and the contents of the patent specification are still within the scope of the present invention. within the scope of this new patent.

100: Frame 10: Upper pipe fittings 20: Lower pipe fittings 30: Riser fittings 40: Seat fork fittings 50: Chainstay pipe fittings 60: Head Fittings 61: Head tube 62: Front connection part of the upper tube 63: Down tube front connector 70: Connector 71: Connecting part on the riser 72: Rear connection part of the upper tube 73: Front connecting part of seat fork 80: Five-way pipe fittings 81: Crank tube 82: Rear connection part of down tube 83: lower connection part of riser 84: Front link of chainstay 841: Connecting Pipe Sections 90: Rear wheel dropout 91: Hook 92: rear connecting part of seat fork 93: Chainstay rear connecting part 94: glue 200: Thermoplastic fiber prepreg sheet 210: Head end 220: tail end 300: Workbench 400: release paper 500: mandrel 1: Frame 2: Front triangle frame components 2Ⅰ: Shell 2Ⅱ: Shell 201: Butt side edge 202: Welding convex body 3: Rear upper forklift frame components 3Ⅰ: Shell 3Ⅱ: Shell 301: Butt side edge 302: Welding convex body 4: Rear upper forklift frame components 4Ⅰ: Shell 4Ⅱ: Shell 401: Butt side edge 402: Welding convex body 5: Rear fork connector 6: Thermoplastic composite sheet 7: Inner support

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: 1 is a combined perspective view of a conventional thermoplastic composite frame of a bicycle; Fig. 2 is an exploded perspective view of the thermoplastic composite frame of the bicycle; FIG. 3 is a perspective view illustrating that during the molding process of the thermoplastic composite frame of the bicycle, a thermoplastic composite sheet is hot-pressed into a shell; FIG. 4 is a combined cross-sectional view illustrating the pairing of two shell members with an inner support member during the molding process of the thermoplastic composite frame of the bicycle; FIG. 5 is a view similar to FIG. 4 , illustrating that during the molding process of the thermoplastic composite frame of the bicycle, two shell members are thermocompressionally bonded to form a frame member; 6 is a combined perspective view of an embodiment of the novel thermoplastic fiber composite frame; Fig. 7 is an exploded perspective view of this embodiment; Fig. 8 is a view similar to Fig. 7, but viewed from a different angle; Fig. 9 is a partial combined cross-sectional view of this embodiment; 10 is a perspective view illustrating a worktable, a release paper, and a core mold used in the molding process of this embodiment. In this embodiment, the worktable is used to heat a thermoplastic fiber through the release paper. prepreg sheets; and FIG. 11 is an incomplete cross-sectional view illustrating that in this embodiment, a plurality of thermoplastic fiber prepreg sheets are repeatedly wound on the release paper by using the mandrel, so that a plurality of the thermoplastic fiber prepreg sheets are rolled. The windings are laminated on the mandrel.

100: Frame

10: Upper pipe fittings

20: Lower pipe fittings

30: Riser fittings

40: Seat fork fittings

50: Chainstay pipe fittings

60: Head Fittings

61: Head tube

62: Front connection part of the upper tube

63: Down tube front connector

70: Connector

71: Connecting part on the riser

72: Rear connection part of the upper tube

73: Front connecting part of seat fork

80: Five-way pipe fittings

81: Crank tube

82: Rear connection part of down tube

83: lower connection part of riser

84: Front link of chainstay

841: Connecting Pipe Sections

90: Rear wheel dropout

91: Hook

92: rear connecting part of seat fork

93: Chainstay rear connecting part

94: glue

Claims (5)

A thermoplastic fiber composite frame comprising: An upper pipe fitting is made of several thermoplastic fiber prepreg sheets, which are wound and laminated, and then hot pressed; A lower pipe piece, located under the upper pipe piece, the lower pipe piece is made by winding and laminating several thermoplastic fiber prepreg sheets and then hot pressing; a riser piece, located behind the upper piece and the lower piece, the riser piece is made by winding and laminating several thermoplastic fiber prepreg sheets and then hot pressing; Two seat fork pipes, located behind the riser, each seat fork pipe is made by winding and laminating several thermoplastic fiber prepreg sheets and then hot pressing; Two chainstay tubes, located behind the seat tube and below the seatstay tubes, each chainstay tube is made by winding and laminating several thermoplastic fiber prepreg sheets and then hot pressing; a pipe fitting connected to the front end of the upper pipe fitting and the front end of the lower pipe fitting; a connecting piece connected to the rear end of the upper pipe piece, the top end of the riser pipe piece and the front end of the seat stay pipe pieces; a five-way pipe connected to the rear end of the lower pipe, the bottom end of the riser and the rear ends of the seat stay pipes; and There are two rear wheel hooks, each of which is connected to the rear end of the corresponding one of the seat stay tubes and the rear end of the corresponding one of the chainstay tubes. The thermoplastic fiber composite frame of claim 1, wherein the head tube member has a head tube portion, a front upper tube connection portion connected to the head tube portion and extending rearwardly, and a head tube portion connected to the head tube portion. The front connecting part of the lower pipe connected to and extending backward, the connecting piece has an upper connecting part of the riser, a rear connecting part of the upper pipe connected to the upper connecting part of the riser and extending forward, and a connecting part of the upper pipe The connecting part is connected to the front connecting part of the seat fork and extends backward. The five-way pipe has a crank pipe part, a lower pipe rear connecting part connected with the crank pipe part and extending forward, and a lower pipe rear connecting part connected with the crank pipe part. The lower connecting part of the seat pipe extending upward, and a front connecting part of the chainstay connected to the crank pipe part and extending backward; the upper pipe part is connected between the front connecting part of the upper pipe and the rear connecting part of the upper the lower pipe is connected between the front connecting part of the lower pipe and the rear connecting part of the lower pipe; The front end of the rear fork is connected with the front connecting part of the chainstay, the front ends of the chainstay pipes are connected with the front connecting part of the chainstay, each rear wheel hook piece has a hook part, a rear hook part connected with the hook part a seat stay rear connection part, and a chain stay rear connection part connected with the hook part, the seat stay rear connection part of each rear wheel dropper is connected with the rear end of one of the corresponding seat stay pipe parts, The chainstay rear connecting portion of each rear wheel dropper is connected with the rear end of the corresponding one of the chainstay pipes. The thermoplastic fiber composite frame as claimed in claim 1, wherein the head pipe piece, the upper pipe piece and the lower pipe piece are glued together with glue, and the connecting piece and the upper tube piece, the riser piece and the lower tube piece are glued with glue Wait for the seat stays, use glue to bond the bottom bracket, the riser and the chain stays, and glue each rear wheel dropout to one of the corresponding seat stays A pipe fitting and one of the corresponding chainstay pipe fittings. The thermoplastic fiber composite frame of claim 1, wherein the upper tube, the lower tube, the riser, the seat stay tubes and the seat stay tubes are thermoplastic fiber prepreg sheets The material of the material is unidirectional carbon fiber impregnated with thermoplastic resin, the weight percentage of the unidirectional carbon fiber is between 40% and 70%, and the weight percentage of the thermoplastic resin is between 30% and 60%. The thermoplastic fiber composite frame of claim 1, wherein the upper tube, the lower tube, the riser, the seat stay tubes and the seat stay tubes are thermoplastic fiber prepreg sheets The material of the material is carbon fiber woven cloth impregnated with thermoplastic resin, the weight percentage of the carbon fiber woven cloth is between 40% and 70%, and the weight percentage of the thermoplastic resin is between 30% and 60%.

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