TWM634950U - Collapsible bicycle frame - Google Patents

Abstract

A foldable bicycle frame, comprising a first element, a second element, a positioning unit and a locking unit, the first element includes a matching portion and a through hole, the second element has a joint portion and A plurality of positioning holes corresponding to the joint portion, the positioning unit is installed on the first component, and can pass through the through hole and be embedded in one of the positioning holes, the locking unit can detachably fasten the second component to the the first element. Utilizing the detachable connection of the second element to the first element and the cooperation between the positioning unit and the locking unit, the bicycle components can be folded.

Description

Collapsible bicycle frame

The present invention relates to a bicycle, in particular to a foldable bicycle frame.

Generally, the bicycle without folding function can only be detached from the frame of the front wheel and the rear wheel when it is to be packed and carried. However, the frame still occupies a considerable volume, and the volume of packing is large, and the freight will also increase.

An existing foldable bicycle (patent application number TW201109223A) includes a front frame, a rear frame and a folding device. The front frame includes a handle and a vertical tube, and the vertical tube is connected to a front wheel. The rear frame is connected to a rear wheel by a rear fork. The folding device includes a folding front section, a folding middle section and a folding rear section. The pivot pivotally connects the folding middle section to the folding front section, and the front section pivot is further provided with a quick release part, and the front section pivot can be pivoted or fixed by quickly releasing the quick release part. In the shape of a notch, one end is inserted into the folded middle section and pivotally connected to the folded rear section by a rear pivot, and a quick-release part is arranged on the rear pivot, and the rear part is quickly pivoted by the quick-release part. The shaft can be pivoted or fixed by loosening, and the other end of the folded rear section is inserted into the connecting part of the rear fork and is pivotally connected by a rear fork pivot, so that the rear fork can be pivoted relative to the rear fork with the rear fork pivot as the pivot center. The folding device pivots, and the rear fork pivot is connected with a quick-release part, and the rear fork pivot can be quickly loosened and pivoted or fixed by the quick-release part.

Although the frame of this bicycle can be folded, even if the folding front section, the folding middle section and the folding rear section of the folding device are folded, the entire bicycle is only slightly shortened in front and rear length, and the whole still occupies a considerable volume, which is still ineffective. Solve the problem of shrinking volume and increasing freight.

Therefore, the purpose of the present invention is to provide a collapsible bicycle frame that can be folded into a smaller volume.

Therefore, the foldable bicycle frame of the present invention includes a first component, a second component, a positioning unit and a locking unit. The first element includes a fitting portion, and a perforation corresponding to the fitting portion. The second element is detachably connected to the first element, and has a concave and convex complementary to the fitting portion and can be embedded with each other. The joint part of the cover, and a plurality of positioning holes corresponding to the joint part, the positioning unit is installed on the first element, and can pass through the through hole and be embedded in one of the positioning holes, the locking unit detachably puts the The second element is bound to the first element.

The effect of the new model is: using the second element to be detachably connected to the first element, using the positioning unit to be embedded in the first element and the second element, and using the locking unit to connect the second element The function of being bound to the first element can make the frame of the bicycle switch between a riding state and a folded state, and the volume of the folded state is small, which can achieve the purpose of saving space and reducing shipping costs.

Referring to Fig. 1 to Fig. 3, an embodiment of the new folding type bicycle frame includes a first element 10 located at the rear section of the vehicle frame, a second element 20 located at the front section of the vehicle frame, a positioning unit 30 and a lock Solid unit 40.

The first element 10 extends along a transverse axis X and has a hollow tubular shape with an elliptical cross-section, including a tubular wall 12 that can define a fitting portion 11 with an elliptical hole-shaped cross-section, and a tube wall 12 disposed on the tubular wall 12 and The through hole 14 communicating with the sleeve portion 11 from the outside, and a pair of pivot ears 16 disposed on the other side of the through hole 14 . At least one slot 121 extending along the transverse axis X is defined at the end of the tube wall 12 .

The second element 20 is detachably connected to the first element 10, the cross section of the second element 20 is oval and hollow tubular, and has a concavo-convex joint complementary to the fitting portion 11 and can be nested with each other. portion 21, and a plurality of positioning holes 22 disposed on the joint portion 21, and the positioning holes 22 are arranged at intervals along the transverse axis X.

The positioning unit 30 is installed on the first component 10, and includes an operating rod 31 pivotally connected to the pivot ears 16, a movable pin 32 connected to the operating rod 31, and a movable pin installed between the operating rod 31 and the operating rod 31. An elastic member 33 is provided between the first element 10 and the movable pin 32 keeps extending toward the through hole 14 . The movable pin 32 has a pin rod 321 and a screw 322 threaded through the operating rod 31 and screwed to the pin rod 321 , the movable pin 32 can pass through the through hole 14 and be embedded in one of the positioning holes 22 , The elastic member 33 of this embodiment is a torsion spring.

The locking unit 40 fastens the second element 20 to the first element 10 detachably. The locking unit 40 includes an elliptical hollow ring 41, and a quick release group 42 passing through the ring 41, the ring 41 is sleeved on the end of the tube wall 12, and can be The notch 121 is deformed in a constricted manner.

In order to further understand the functions produced by the coordination of the various components of the present invention, the use of technical means, and the expected effects, it will be explained as follows. It is believed that the present invention can be understood more deeply and specifically.

As shown in FIGS. 1 and 3 , it shows that the bicycle is in a rideable state. At this time, the engaging portion 21 of the second element 20 is nested in the fitting portion 11 of the first element 10, and the positioning unit 30 The movable pin 32 passes through the through hole 14 and is embedded in one of the positioning holes 22 . Cooperate with the quick release group 42 of the locking unit 40 to form a locking shape, so that the end of the first component 10 can be fixed to the second component 20 by the tightening ring 41, the notch 121 can be tightened and deformed, and The second elements 20 are held firmly in the riding state relative to the first element 10 .

As shown in FIG. 4 , when the operator pulls the quick release assembly 42 of the locking unit 40 , it is in a loose state, and the clamp ring 41 slides relative to the first component 10 (or the second component 20 ). The operator then presses the operating rod 31 of the positioning unit 30 (at this time, the elastic member 33 contains a return elastic force), and the operating rod 31 drives the movable pin 32 to move toward the outside of the first element 10 relative to the through hole 14 , the movable pin 32 will also disengage from the corresponding positioning hole 22 .

At this time, as shown in FIG. 5 , the operator can operate the second element 20 to move relative to the first element 10, and make the engaging portion 21 move out from the sleeve portion 11, the second element 20 and the first element The first element 10 is completely separated, and when folded, the second element 20 and the first element 10 can be arranged side by side. In this way, the length of the vehicle frame and the overall volume can be shortened. And when the force applied to the operating rod 31 pressing the positioning unit 30 is released, the movable pin 32 will be embedded in the through hole 14 by utilizing the elastic force of the elastic member 33 .

As shown in FIG. 6 , the operator can also operate the second element 20 to retract and move relative to the inside of the first element 10 , and make the joint portion 21 retract into the sleeve portion 11 , and the second element 20 and The length of the first element 10 can be reduced.

Therefore, the present invention utilizes the function that the second element 20 can be disassembled and retracted relative to the first element 10, and utilizes the positioning unit 30 to be embedded in the first element 10 and the second element 20, utilizes the lock The function of the fixing unit 40 to fix the second element 20 inside the first element 10 can make the frame of the bicycle switch between the riding state and the folded state, and the volume of the folded state is small, which can reach The purpose of saving space and reducing shipping costs.

It is worth mentioning that, the cross-section of the first element 10 is elliptical, and the cross-section of the second element 20 is elliptical, which can increase the structural strength of the first element 10 and the second element 20, and can make The bicycle front fork wheel frame has high stability and will not swing when riding. In addition, the clamping ring 41 of the locking unit 40 is also in the shape of an elliptical hollow ring, and the clamping ring 41 itself has the force of springing outwards, so the quick release assembly 42 does not need to add a spring.

In addition, by using any positioning hole 25 of the second component 20 to cooperate with the movable pin 32 of the positioning unit 30 , the installation length of the second component 20 relative to the first component 10 can be adjusted.

To sum up, the foldable bicycle frame of the present invention has a simple overall structure and is easy to operate, and can indeed achieve the purpose of the present invention.

But the above-mentioned person is only the embodiment of the present invention, and should not limit the scope of implementation of the present invention with this, and all simple equivalent changes and modifications made according to the patent scope of the present application and the content of the patent specification are still within the scope of the present invention. Within the scope covered by this patent.

10: The first component 11: Fitting Department 12: pipe wall 121: Grooving 14: perforation 16: hub ear 20:Second component 21: Joint 22: Positioning hole 30: Positioning unit 31: Joystick 32: Activity pin 321: pin rod 322: screw 33: Elastic parts 40: Locking unit 41: beam ring 42: Quick release group X: Horizontal axis

Other features and effects of the present invention will be clearly presented in the implementation manner with reference to the drawings, wherein: Fig. 1 is a three-dimensional combination schematic diagram of an embodiment of the novel foldable bicycle frame; Fig. 2 is a three-dimensional exploded schematic diagram of this embodiment; Fig. 3 is a combination schematic view of this embodiment; Fig. 4 is a schematic diagram of a folding operation of this embodiment; Fig. 5 is a schematic diagram showing that a second component of this embodiment is detached relative to a first component; and Fig. 6 is a schematic diagram of the retraction of the second element relative to the first element of the embodiment.

10: The first component

11: Fitting Department

12: pipe wall

121: Grooving

14: perforation

16: hub ear

20:Second component

21: Joint

22: Positioning hole

30: Positioning unit

31: Joystick

32: Activity pin

321: pin rod

322: screw

33: Elastic parts

40: Locking unit

41: beam ring

42: Quick release group

X: Horizontal axis

Claims (3)

A foldable bicycle frame, comprising: A first element, including a fitting portion, and a perforation corresponding to the fitting portion; A second element, which is detachably connected to the first element, has a concavo-convex joint complementary to the fitting part and can be nested with each other, and a plurality of positioning holes corresponding to the joint; A positioning unit is installed on the first element, and can pass through the through hole and be embedded in one of the positioning holes; and A locking unit fastens the second element to the first element detachably. The collapsible bicycle frame according to claim 1, wherein the positioning unit includes an operating rod pivotally connected to the first element, a movable pin passing through the operating rod, and a constant Keeping the elastic piece protruding towards the through hole, the movable pin can pass through the through hole and be embedded in one of the positioning holes. The retractable bicycle frame as described in claim 2, wherein the first element is hollow tubular and includes a tubular wall that can define a fitting portion with an elliptical hole in cross section, and the end of the tubular wall is opened There is at least a slit, the perforation is arranged on the pipe wall, the cross section of the second element is elliptical and hollow tubular, and the locking unit includes a set of bundles arranged at the end of the pipe wall and in the shape of an elliptical hollow ring ring, and a quick-release set that passes through the ring.

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