TWM492281U - Folding device for folding bike frame - Google Patents

Description

折疊自行車車架Folding bicycle frame

本創作係有關一種自行車車架，特別是指一種折疊自行車車架。The present invention relates to a bicycle frame, and more particularly to a folding bicycle frame.

在眾多的折疊自行車中，此類自行車在進行折疊時，後三角5繞鉸接軸向前卷折的折疊自行車的車架大部分為如第1圖所示。車架除了在主樑管2上設有折疊接頭外，還在該車設有後車輪10的後三角5與中管1的下端進行鉸接連接；在進行折疊時，後三角5繞鉸接軸向前卷折，主樑管2的前部側向折疊，完成整車折疊。但是後車輪10在向前折疊後，後車輪10在車架的主樑管2的下方，此類車型輕盈，折疊體積較小。但是車架的主樑管2是整個車架受力最大的部分，在騎行時除了承受車輪與地面的碰撞力外，還承受載重的重力，特別是在複雜路段顛簸或者是突然掉入比較深的凹坑時，會使得主樑管2變形或者斷裂，一般的方法僅僅是在主樑管2和中管1連接處焊接一些加強管6，但是只是加強主樑管2與中管1的連接強度，對主樑管2的中部沒有得到加強保護。In many folding bicycles, when such bicycles are folded, the frame of the folding bicycle in which the rear triangle 5 is wound around the hinge axis is mostly as shown in Fig. 1. In addition to the folding joint on the main beam tube 2, the rear frame 5 of the rear wheel 10 is hingedly connected to the lower end of the middle tube 1 in the vehicle; when folding, the rear triangle 5 is wound around the hinge axis. The front roll is folded, and the front portion of the main beam tube 2 is folded laterally to complete the folding of the whole vehicle. However, after the rear wheel 10 is folded forward, the rear wheel 10 is below the main beam tube 2 of the frame, and the type of the vehicle is light and the folding volume is small. However, the main beam tube 2 of the frame is the most stressed part of the whole frame. In addition to bearing the collision force between the wheel and the ground, it also bears the weight of the load, especially in the complicated road section, or suddenly falls into the deep. When the pit is deformed, the main beam tube 2 is deformed or broken. The general method is to weld some reinforcing tubes 6 at the joint of the main beam tube 2 and the middle tube 1, but only strengthen the connection between the main beam tube 2 and the middle tube 1. The strength is not enhanced for the middle of the main beam tube 2.

因此，本創作即提出一種折疊自行車車架，有效解決上述該等問題，具體架構及其實施方式將詳述於下：Therefore, this creation proposes a folding bicycle frame to effectively solve the above problems. The specific structure and its implementation will be described in detail below:

本創作之主要目的在提供一種折疊自行車車架，其結構合理，折疊結構穩定，主樑管的保護強度大的折疊自行車車架。The main purpose of the present invention is to provide a folding bicycle frame with a reasonable structure, a stable folding structure, and a large folding bicycle frame with strong protection strength of the main beam tube.

為達上述之目的，本創作提供一種折疊自行車車架，包括一中管、一主樑管及套設有一後車輪的一後三角，該中管一側與該後三角鉸接；中管另一側連接有至少一下管，該下管另一端與該主樑管連接，該後三角折疊時，該後車輪套接於該下管。For the above purposes, the present invention provides a folding bicycle frame comprising a middle tube, a main beam tube and a rear triangle sleeved with a rear wheel, the middle tube side being hinged to the rear triangle; the middle tube being another The side is connected with at least one lower tube, and the other end of the lower tube is connected with the main beam tube. When the rear triangle is folded, the rear wheel is sleeved to the lower tube.

下管包括連接部，該連接部一端與該後三角鉸接連接，另一側與該下管的一端固定連接。The lower tube includes a connecting portion, one end of which is hingedly connected to the rear triangle, and the other side is fixedly connected to one end of the lower tube.

主樑管中部呈拱起狀，且兩端向下彎曲；該主樑管一端與該中管固定連接，另一端與頭管固定連接；該下管與該主樑管固定連接於頭管方向的該拱起狀處。The middle part of the main beam tube is arched and the two ends are bent downward; one end of the main beam tube is fixedly connected with the middle tube, and the other end is fixedly connected with the head tube; the lower tube and the main beam tube are fixedly connected to the head tube direction The arch is shaped.

下管數目為兩根且在該主樑管間相互對稱，該後車輪套設於兩該下管間。The number of the lower tubes is two and is symmetrical with each other between the main beam tubes, and the rear wheel is sleeved between the two lower tubes.

下管的管體為方形結構。The tube of the lower tube has a square structure.

後三角包括相互對稱的三角形構架和橫板；該橫板與兩該三角形構架固定連接呈一體並與該連接部鉸接。The rear triangle includes mutually symmetrical triangular frames and transverse plates; the transverse plates are integrally connected to the two triangular frames and hinged to the connecting portion.

三角形構架包括平管、上管和立管；該平管一端與該上管一端固定連接，另一端與該立管一端固定連接；該立管另一端與該上管另一端固定連接，兩該立管與該橫板固定連接，兩該立管的底端與該連接部鉸接。The triangular frame includes a flat pipe, an upper pipe and a riser; one end of the flat pipe is fixedly connected to one end of the upper pipe, and the other end is fixedly connected to one end of the riser; the other end of the riser is fixedly connected with the other end of the upper pipe, The riser is fixedly connected to the horizontal plate, and the bottom ends of the two risers are hinged to the connecting portion.

本創作之優點為：下管一端與主樑管連接，另一端與中管的一側連接，下管和中管以及主樑管形成三角形結構，強度高，結構穩定。而且下管與主樑管連接起到加強的作用，增加主樑管的強度，不易斷裂；後三角折疊時，後車輪套接於下管，使得折疊後的車架折疊定位的穩定，牢固。The advantages of this creation are: one end of the lower pipe is connected with the main beam pipe, the other end is connected with one side of the middle pipe, and the lower pipe and the middle pipe and the main beam pipe form a triangular structure with high strength and stable structure. Moreover, the connection between the lower tube and the main beam tube plays a reinforcing role, increasing the strength of the main beam tube and not easily breaking; when the rear triangle is folded, the rear wheel is sleeved to the lower tube, so that the folded frame is stable and firm.

底下藉由具體實施例詳加說明，當更容易瞭解本創作之目的、技術內容、特點及其所達成之功效。The details of the creation, the technical content, the features and the effects achieved by the present invention are more easily explained by the detailed description of the specific embodiments.

本創作提供一種折疊自行車車架，請參考第2圖至第4圖所示，折疊自行車車架，包括一中管1、一主樑管2、至少一下管3和套設有一後車輪10的一後三角5；中管1包括一連接部4，連接部4位於下端，且連接部4套設有五通管。後三角5包括相互對稱的兩三角形構架和一橫板51；每一個三角形構架包括一平管52、一上管53和一立管54；平管52一端與上管53一端固定連接，另一端與立管54一端固定連接；立管54另一端與上管53另一端固定連接，形成三角形構架；橫板51與兩三角形構架固定連接呈一體，形成後三角5，後三角5在車架後部，呈三角狀更為穩定，具有強度高，穩定性好。兩立管54的底端與連接部4鉸接連接，使得後三角5能向前繞鉸接處向前卷折。The present invention provides a folding bicycle frame. Referring to Figures 2 to 4, the folding bicycle frame includes a middle pipe 1, a main beam pipe 2, at least a lower pipe 3, and a rear wheel 10. A rear triangle 5; the middle tube 1 includes a connecting portion 4, the connecting portion 4 is located at the lower end, and the connecting portion 4 is sleeved with a five-way tube. The rear triangle 5 includes two triangular frames symmetrical with each other and a horizontal plate 51; each triangular frame includes a flat tube 52, an upper tube 53 and a riser 54; one end of the flat tube 52 is fixedly connected to one end of the upper tube 53, and the other end is The riser 54 is fixedly connected at one end; the other end of the riser 54 is fixedly connected with the other end of the upper pipe 53 to form a triangular frame; the horizontal plate 51 is fixedly connected with the two triangular frames to form a rear triangle 5, and the rear triangle 5 is at the rear of the frame. It is more stable in triangle shape, with high strength and good stability. The bottom ends of the two risers 54 are hingedly connected to the connecting portion 4 so that the rear cam 5 can be folded forward forward about the hinge.

下管3數目為兩根，依需要也可為其他數目。主樑管2中部呈拱起狀，且兩端向下彎曲；主樑管2一端與中管1固定連接，另一端與一頭管9固定連接。連接部4一端與後三角5鉸接，另一端與兩下管3的一端固定連接，兩下管3另一端與主樑管2固定連接於頭管9方向的主樑管2長度的三分之二處，且相互對稱，使得易於套接後車輪10。下管3和中管1以及主樑管2形成三角形結構，強度高，結構穩定。而且下管3固定連接於頭管9方向的主樑管2長度的三分之二處，即主樑管2長度的三分之二與下管3形成三角形結構，最大限度的加強主樑管2的強度。主樑管2呈拱起狀有利於自行車在折疊時，後車輪10套接在主樑管2的下面，減小折疊體積。主樑管2兩端向下彎曲時，使得頭管9高度降低，從而使得前叉和車把在折疊時，高度更低，有利於折疊高度。主樑管2和連接部4間固定連接的兩下管3相互對稱，可加強主樑管2的受力強度，車架平衡受力、壽命長。自行車在進行折疊時，後三角5繞鉸接軸向前卷折，主樑管2的前部側向折疊，後車輪10在向前折疊後，後車輪10套接在車架和主樑管2的下方的兩下管3間，兩下管3套接後車輪10，使得折疊後的後車輪10定位穩定，折疊後車架定位牢固、穩定。The number of the lower tubes 3 is two, and may be other numbers as needed. The central portion of the main beam tube 2 is arched and has two ends bent downward; one end of the main beam tube 2 is fixedly connected with the middle tube 1 and the other end is fixedly connected with a head tube 9. One end of the connecting portion 4 is hinged to the rear triangle 5, and the other end is fixedly connected to one end of the two lower tubes 3. The other end of the two lower tubes 3 is fixedly connected to the main beam tube 2 by a third of the length of the main beam tube 2 in the direction of the head tube 9. Two locations, and symmetrical to each other, make it easy to nest the rear wheel 10. The lower tube 3 and the middle tube 1 and the main beam tube 2 form a triangular structure with high strength and stable structure. Moreover, the lower tube 3 is fixedly connected to two-thirds of the length of the main beam tube 2 in the direction of the head tube 9, that is, two-thirds of the length of the main beam tube 2 and the lower tube 3 form a triangular structure, and the main beam tube is maximally strengthened. The strength of 2. The main beam tube 2 is arched to facilitate the folding of the rear wheel 10 under the main beam tube 2 when the bicycle is folded, thereby reducing the folding volume. When the ends of the main beam tube 2 are bent downward, the height of the head tube 9 is lowered, so that the front fork and the handlebar are lower in height when folded, which is advantageous for the folding height. The two lower tubes 3 fixedly connected between the main beam tube 2 and the connecting portion 4 are symmetrical with each other, and the strength of the main beam tube 2 can be strengthened, and the frame is balanced and has a long service life. When the bicycle is folded, the rear triangle 5 is folded forward around the hinge axis, the front portion of the main beam tube 2 is folded laterally, and the rear wheel 10 is folded forward, and the rear wheel 10 is sleeved on the frame and the main beam tube 2 The lower two tubes 3 and the lower tubes 3 are sleeved to the rear wheel 10, so that the folded rear wheel 10 is stably positioned, and the frame is firmly and stably positioned after folding.

主樑管2的管體、後三角5的管體和下管3的管體均為方形結構。方形結構的方形邊起到加強筋的作用，因此方形結構使得管體強度增大，打破車架的管體常規使用類似橢圓形管體或者橢圓形管體和圓形管體的做法。在車架管體強度達到自行車行業標準時，方形結構的管體體積可以相應的減小，車架管體的體積能夠相應減小，結構合理。且方形結構的管體強度大，因此，對材料要求不苛刻，節約成本。本創作中所稱的方形結構可以使具有菱形邊的管體和四方形的管體，或者其他多邊形，管體外部具有多變菱形邊，或者有多邊形和圓形弧線相結合的管體。The tube body of the main beam tube 2, the tube body of the rear triangle 5, and the tube body of the lower tube 3 have a square structure. The square side of the square structure acts as a reinforcing rib, so the square structure increases the strength of the pipe body, and the pipe body that breaks the frame conventionally uses an elliptical pipe body or an elliptical pipe body and a circular pipe body. When the strength of the frame body reaches the bicycle industry standard, the volume of the square structure can be correspondingly reduced, and the volume of the frame body can be correspondingly reduced, and the structure is reasonable. Moreover, the square structure has a large strength, and therefore, the material requirements are not critical and cost is saved. The square structure referred to in this creation can be a tube body having a rhombic edge and a square tube body, or other polygons, a rhomboided edge outside the tube body, or a tube body having a combination of a polygon and a circular arc.

唯以上所述者，僅為本創作之較佳實施例而已，並非用來限定本創作實施之範圍。故即凡依本創作申請範圍所述之特徵及精神所為之均等變化或修飾，均應包括於本創作之申請專利範圍內。The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, any change or modification of the characteristics and spirit described in the scope of this application shall be included in the scope of the patent application for this creation.

1‧‧‧中管
2‧‧‧主樑管
3‧‧‧下管
4‧‧‧連接部
5‧‧‧後三角
51‧‧‧橫板
52‧‧‧平管
53‧‧‧上管
54‧‧‧立管
6‧‧‧加強管
9‧‧‧頭管
10‧‧‧後車輪1‧‧‧中管
2‧‧‧ main beam tube
3‧‧‧Under the tube
4‧‧‧Connecting Department
5‧‧‧After the triangle
51‧‧‧ horizontal plate
52‧‧‧ flat tube
53‧‧‧Upper tube
54‧‧‧Riser
6‧‧‧ Strengthening the tube
9‧‧‧ head tube
10‧‧‧ rear wheel

第1圖為現有的折疊自行車車架的整體結構示意圖。 第2圖為本創作折疊自行車車架之整體結構示意圖。 第3圖為本創作折疊自行車車架裝設有車輪並折疊後車輪之整體結構示意圖。 第4圖為本創作折疊自行車車架裝設有車輪且前後車輪折疊之整體結構示意圖。Fig. 1 is a schematic view showing the overall structure of a conventional folding bicycle frame. The second figure is a schematic diagram of the overall structure of the folding bicycle frame. The third figure is a schematic view of the overall structure of the wheel of the created folding bicycle frame with the wheel and the folded wheel. Fig. 4 is a schematic view showing the overall structure of the folding bicycle frame with the wheels and the front and rear wheels folded.

1‧‧‧中管 1‧‧‧中管

2‧‧‧主樑管 2‧‧‧ main beam tube

3‧‧‧下管 3‧‧‧Under the tube

4‧‧‧連接部 4‧‧‧Connecting Department

5‧‧‧後三角 5‧‧‧After the triangle

51‧‧‧橫板 51‧‧‧ horizontal plate

52‧‧‧平管 52‧‧‧ flat tube

53‧‧‧上管 53‧‧‧Upper tube

54‧‧‧立管 54‧‧‧Riser

9‧‧‧頭管 9‧‧‧ head tube

10‧‧‧後車輪 10‧‧‧ rear wheel

Claims (7)

一種折疊自行車車架，包括：一中管、一主樑管及套設有一後車輪的一後三角，該中管一側與該後三角鉸接；以及 其特徵在於，該中管另一側連接有至少一下管，該下管另一端與該主樑管連接，該後三角折疊時，該後車輪套接於該下管。A folding bicycle frame comprising: a middle tube, a main beam tube and a rear triangle sleeved with a rear wheel, the middle tube side being hinged to the rear triangle; and wherein the middle tube is connected on the other side There is at least one tube, the other end of which is connected to the main beam tube, and when the rear triangle is folded, the rear wheel is sleeved to the lower tube. 如請求項1所述之折疊自行車車架，其中該中管包括一連接部，該連接部一端與該後三角鉸接連接，另一側與該下管的一端固定連接。The folding bicycle frame of claim 1, wherein the middle tube comprises a connecting portion, one end of the connecting portion is hingedly connected to the rear triangle, and the other side is fixedly connected to one end of the lower tube. 如請求項2所述之折疊自行車車架，其中該主樑管之中部呈一拱起狀，且兩端向下彎曲；該主樑管一端與該中管固定連接，另一端與一頭管固定連接；該下管與該主樑管固定連接於該頭管方向的該拱起狀處。The folding bicycle frame according to claim 2, wherein the main beam tube has an arched shape and the two ends are bent downward; the main beam tube is fixedly connected to the middle tube at one end, and the other end is fixed to the first tube. Connecting; the lower tube and the main beam tube are fixedly connected to the arched portion in the direction of the head tube. 如請求項3所述之折疊自行車車架，其中該下管數目為兩根且在該主樑管間相互對稱，該後車輪套設於兩該下管間。The folding bicycle frame according to claim 3, wherein the number of the lower tubes is two and is symmetric with each other between the main beam tubes, and the rear wheel is sleeved between the two lower tubes. 如請求項4所述之折疊自行車車架，其中該下管的管體為方形結構。The folding bicycle frame of claim 4, wherein the tubular body of the lower tube has a square structure. 如請求項4所述之折疊自行車車架，其中該後三角包括相互對稱的兩個三角形構架和一橫板；該橫板與兩該三角形構架固定連接呈一體並與該連接部鉸接。The folding bicycle frame of claim 4, wherein the rear triangle comprises two triangular frames and a transverse plate that are symmetrical with each other; the horizontal plate is fixedly coupled to the two triangular frames and hinged to the connecting portion. 如請求項6所述之折疊自行車車架，其中每一該三角形構架包括一平管、一上管和一立管；該平管之一端與該上管之一端固定連接，另一端與該立管之一端固定連接；該立管之另一端與該上管之另一端固定連接，兩該立管與該橫板固定連接，兩該立管的底端與該連接部鉸接。The folding bicycle frame of claim 6, wherein each of the triangular frames comprises a flat tube, an upper tube and a riser; one end of the flat tube is fixedly connected to one end of the upper tube, and the other end is connected to the riser One end of the riser is fixedly connected; the other end of the riser is fixedly connected to the other end of the upper pipe, and the two risers are fixedly connected with the horizontal plate, and the bottom ends of the two risers are hinged with the connecting portion.