CN105480348A - Bicycle frame structure that can be expanded and folded - Google Patents

Abstract

A frame structure of a bicycle capable of being extended and folded, comprising: the front frame and the rear frame are connected with each other through a pin joint device, wherein the front frame and the rear frame can be folded to a folded state and unfolded to a use state by taking the pin joint device as a midpoint, and the pin joint device is provided with a locking device for maintaining the front frame and the rear frame in the use state; wherein the front frame includes a first frame section, a second frame section, and a fastener, the first frame section and the second frame section being combined together in a relatively slidable relationship such that the first frame section is slidable relative to the second frame section between a first position and a second position, wherein the fastener can fix and release the first frame section and the second frame section in and from the relatively immovable position; the invention can be folded and adjusted in size easily, and has the advantages of convenient carrying and suitability for users of different statures.

Description

Bicycle frame structure that can be expanded and folded

technical field

The invention relates to a bicycle frame, in particular to a bicycle frame structure capable of both expansion and contraction and folding.

Background technique

Under the concept of advocating health and environmental protection, cycling has become one of the most popular sports among modern people. Driven by this trend, the bicycle-related industries are also developing vigorously. Due to the improvement of material living standards in modern society, the function of bicycles is no longer mainly for transportation. In order to better meet the needs of modern consumers and strive for market share, bicycle manufacturers continue to improve the design of bicycles. It can be divided into two categories: sports and leisure.

In addition to riding bicycles for sports purposes, many modern people living in cities have gone one step further to use bicycles as a daily means of transportation. Many people will carry bicycles as one of the leisure tools when driving to other places; therefore, in order to carry and store bicycles more conveniently, the industry has proposed foldable bicycles so that users can easily and Carry and store your bike conveniently.

No. 453962 Taiwan Invention Patent "Foldable Bicycle" has been announced, which discloses a collapsible bicycle, which includes a front frame and a rear frame. Apart from the fold and tie points on or near the seat tube, the front and rear frames are oriented so that the imaginary line between them protrudes forward or rear without Contact with either frame, except when the front and rear frames are engaged and secured together such that the bicycle is in an operational riding position.

Although the aforementioned foldable bicycles that have been announced can be folded together, the distance between the front axle and the rear axle cannot be adjusted. But can not arbitrarily adjust the size of the bicycle to be suitable for users of different statures.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned problems of existing bicycles, and to provide a bicycle frame structure that can be folded and adjusted to accommodate users of different sizes such as adults or children.

To achieve the above object, the present invention adopts the following technical solutions:

A bicycle frame structure that can be expanded and folded, including: a front frame and a rear frame, the front frame and the rear frame are connected to each other through a pivot joint, wherein the front frame and the rear frame The frames can be folded in half to a folded state and unfolded to a use state with the pivot joint as the midpoint, and the pivot joint has a locker to maintain the front frame and the rear frame in use; wherein the front frame It includes a first frame part, a second frame part and a fixer, the second frame part is connected with the rear frame through a pivot joint, and the first frame part and the second frame part are relatively slidable The relationship is combined so that the first frame part can slide between a first position and a second position relative to the second frame part, wherein the anchor can fix the first frame part and the second frame part In and released from a relatively immobile fixed position.

To further illustrate the present invention, the pivot joint is a hinge, and the locking device is a quick-release structure arranged on the hinge.

As a further description of the present invention, the second frame part is a hollow pipe body, and the first frame part is a pipe member that can slide along the axis direction of the pipe body of the second frame part.

To further illustrate the present invention, one embodiment of the anchor is a quick release structure, the anchor passes through the cross-section of the first frame part and the second frame part, and the anchor can connect the side of the first frame part The wall is pressed toward the direction of the second frame part to tightly clamp the first frame part and the second frame part together.

The beneficial effect of the present invention is that the telescopic and foldable bicycle frame structure of the present invention can be easily folded and adjusted in size, and has the advantages of being convenient to carry and suitable for riding by users of different sizes.

Description of drawings

Fig. 1 is a structural diagram of the first frame of the bicycle frame structure capable of both retracting and folding according to the present invention sliding to the first position.

Fig. 2 is a structural view of the first frame of the bicycle frame structure capable of both retracting and folding according to the present invention sliding to the second position.

Fig. 3a is a top structural view of the locking device of the pivot joint of the front frame at the locking position.

Fig. 3b is a top structural view of the locking device of the pivot joint of the front frame in the unlocked position.

Fig. 4a is a cross-sectional structural view of the fixer at position IV-IV in Fig. 1 in a tight position.

Fig. 4b is a schematic diagram of the anchor of Fig. 4b in a released position.

Fig. 5 is a schematic view of the folded state of the front frame and the rear frame of the present invention.

Explanation of reference numbers:

A front frame B rear frame

W2 rear wheel set 10 pivot joint

10A second pivot joint 11 first wing plate

111 the first gap 12 the second wing plate

121 second notch 122 rotating shaft

13 Pivot 20 Locker

21 Pull rod 211 Tail end

212 Bolt 22 Cam lever

221 Cam 222 Shift lever

30 The first frame part 31 Perforation

32 Head pipe 33 Front fork

34 handle pipe 40 second frame part

50 Fixer 51 Pull rod

511 Nut 52 Cam lever

521 Cam 60A Seat stay

60B Chainstay 70 Riser

71 Front bracket 72 Seat tube

73 Reinforcing rod.

detailed description

The specific implementation manner of the present invention will be described below in conjunction with accompanying drawings 1 to 7.

First, referring to Fig. 1, it is a structural diagram of a specific embodiment of a bicycle frame structure capable of stretching and folding of the present invention, wherein the disclosed bicycle frame structure of stretching and folding includes: a front frame A and a The rear frame B, the front frame A and the rear frame B are connected to each other through a pivot joint 10, wherein the front frame A and the rear frame B can be folded in half with the pivot joint 10 as the midpoint to a fold state (see FIG. 3b ) and extend to a use state (see FIG. 3a ), the pivot joint 10 has a locker 20 for maintaining the front frame A and the rear frame B in the use state.

In a specific embodiment of the present invention, the pivot joint 10 is a hinge, and the locking device 20 is a quick release structure arranged on the hinge; the pivot joint 10 includes a first Wing plate 11 and a second wing plate 12 that is fixed on front vehicle frame A, one end of first wing plate 11 and second wing plate 12 is rotatably pivoted together by a pivot 13, therefore, front vehicle frame A and the rear frame B can be folded in half to a folded state (see FIG. 5 ) and unfolded to a use state (see FIG. 1 ) with the pivot joint 10 as the midpoint.

3a and 3b, in a specific embodiment of the present invention, the locking device 20 is a quick release structure, the quick release structure includes a pull rod 21 and a cam lever 22, on the first wing plate 11 and the other end of the second wing plate 12 respectively have a first notch 111 and a second notch 121, the opening of the first notch 111 extends to the edge of the first wing plate 11, the opening of the second notch 121 extends to the second wing The edge of the plate 12, the tie rod 21 passes through the first notch 111 of the first wing plate 11 and the second notch 121 of the second wing plate 12 in a loose fit relationship, and the tail end 211 of the tie rod 21 passes through the second notch of the second wing plate 12. On the outside, the tail end 211 of the pull rod 21 is rotatably pivoted on the outside of the second wing plate 12. For example, a bolt 212 is provided at the tail end 211 of the pull rod 21, and the bolt 212 is screwed to a rotating shaft outside the second wing plate 12. 122, the front end of the pull rod 21 passes through the outside of the first wing plate 11, the cam lever 22 includes a cam 221 and a lever 222 connected to the cam 221, the eccentric shaft of the cam 221 is pivotally arranged at the front end of the pull rod 21, refer to the figure 3a, the front frame A and the rear frame B are spread out to a use state with the pivot 13 of the pivot joint 10 as the rotation point, the first wing plate 11 and the second wing plate 12 can be close to each other, and then the cam is turned When the lever 22 is moved to the locking position shown in FIG. 3 a , the cam 221 of the cam lever 22 can press the first wing plate 11 toward the second wing plate 12 to prevent the first wing plate of the pivot joint 10 from 11 and the second wing plate 12 are separated to achieve the purpose of maintaining the front frame A and the rear frame B in use; In the unlocked position shown, the cam 221 of the cam lever 22 leaves the surface of the first wing plate 11, and then the cam lever 22 is rotated with the tail end 211 of the pull rod 21 as the rotation center, so that the cam lever 22 leaves the first wing plate The first notch 111 of 11 and the second notch 121 of the second wing plate 12 can fold the front frame A and the rear frame B to a folded state ( See Figure 5).

In the specific embodiment of the present invention, the structure and implementation of the aforementioned pivot joint 10 is one of many possible ways, and it is not intended to limit the implementation of the aforementioned pivot joint 10. Anyone who is familiar with this technical field Those with ordinary knowledge, after understanding the technical content of the aforementioned pivot joint 10 of the present invention, should be able to easily transform it into other equivalent structures, but such simple transformation should still be regarded as the technical scope of the present invention.

In a specific embodiment of the present invention, the rear frame B includes: a rear seat stay 60A, a rear chain stay 60B, a standpipe 70 and a front bracket 71, the front bracket 71 is connected to the front frame A through the pivot joint 10 In one embodiment of the invention, the first wing plate 11 of the pivot joint 10 is fixed at one end of the front bracket 71 of the rear frame B, and the second wing of the pivot joint 10 The plate 12 is fixed on one end of the second frame portion 40 of the front frame A; wherein the standpipe 70 is used to support a pipe 72, and the large chainring and the crankset of the bicycle can be assembled at the bottom of the standpipe 70, Wherein the upper end of the seat stay 60A is fixedly connected to the position near the upper end of the seat tube 70, the upper end of the seat stay 60B is fixedly connected to the position near the lower end of the seat tube 70, and the lower ends of the seat stay 60A and the seat tube 60B are connected together for use. For the assembly of the rear wheel set W2, the seat tube 70, the seat stay 60A and the chain stay 60B form a triangular structure, one end of the front bracket 71 is fixedly connected to the seat tube, and the other end of the front bracket 71 faces the front wheel The direction of frame A stretches out, and as shown in Figure 1, in a preferred embodiment, front support 71 comprises a reinforcement rod 73, and the bottom end of reinforcement rod 73 is fixedly connected to the position near the lower end of standpipe 70, and the position of reinforcement rod 71 The top end is fixedly connected to the lower side of the front bracket 71, and a triangular structure is formed by the standpipe 70, the front bracket 71 and the reinforcing rod 73, which can obtain better structural strength.

In a specific embodiment of the present invention, wherein the front frame A includes a first frame portion 30, a second frame portion 40 and a fixer 50, and the second frame portion 40 is connected to the rear frame through the pivot joint 10 The frame B is connected, and the first frame part 30 and the second frame part 40 are combined together in a relatively slidable relationship, so that the first frame part 30 can be in a first position and a relative to the second frame part 40. Sliding between the second positions, the anchor 50 can fix the first frame part 30 and the second frame part 40 in a relatively immobile fixed position and release from the fixed position. In a specific embodiment of the present invention, when the first frame part 30 slides to the first position, the distance between the first frame part 30 and the second frame part 40 is the shortest, and the frame length of the bicycle is shortened to the shortest. position (see Figure 1), on the contrary, when the first frame part 30 slides to the second position, the distance between the first frame part 30 and the second frame part 40 is the farthest, and the frame length of the bicycle can be Extend to the longest position (see Figure 2). Therefore, users of different sizes can freely adjust the frame length of the bicycle to obtain a comfortable and better riding posture.

In a specific embodiment of the present invention, wherein the front end of the first frame part 30 is provided with a head tube 32, the front fork 33 of the bicycle is rotatably pivoted on the head tube 32, and the upper end of the front fork 33 is connected with a handle tube 34, And the handlebar of bicycle is installed on handle pipe 34, and in a preferred embodiment, handle pipe 34 is connected to the top of front fork 33 by a second pivot joint 10A, and the structure of second pivot joint 10A can be with aforementioned The pivot joint 10 is the same, therefore, the handle and the handle pipe 34 of the bicycle can also be folded with the second pivot joint 10A as the rotation point, which further reduces the occupied space of the bicycle frame after folding, and is also more convenient to carry and store.

In a specific embodiment of the present invention, the second frame part 40 of the front frame A is a hollow tube body, and the first frame part 30 can be along the axis direction of the tube body of the second frame part 40 Sliding tubes, in one embodiment, the first frame part 30 extends into the second frame part 40 in a slidable relationship, and the front end of the first frame part 30 has a head pipe. One embodiment of the retainer 50 is a quick-release configuration, and one embodiment of the quick-release configuration may be similar to the latch 20 . Referring to Fig. 1 and Fig. 4a, the first frame part 30 has a long and narrow through hole 31, the tie rod 51 of the fixer 50 passes through the cross section of the second frame part 40 and the through hole 31 of the first frame part 30, the tie rod The front end of 51 passes through the outside of the second vehicle frame portion 40, and a cam lever 52 is pivotally arranged at the front end of the pull rod 51, and the tail end of the pull rod 51 passes through the outside of the second frame portion 40, and the tail end of the pull rod 51 is provided with There is a rotatable nut 511. After the user adjusts the frame length of the bicycle to a suitable length by sliding the first frame part 30 and the second frame part 40, the user then turns the cam The lever 52 is moved to the pressing position (see Fig. 4a), the cam 521 of the cam lever 52 is pushed against the outer surface of the second frame part 40, and the nut 511 at the tail end of the pull rod 51 is pushed against the second frame at the same time The other opposite outer surface of the frame portion 40 can press the side wall of the second frame portion 40 toward the direction of the first frame portion 30, so as to tighten the first frame portion 30 and the second frame portion 40. clamp together tightly, and then maintain the frame length of the bicycle at the adjusted length; on the contrary, when users of different sizes want to readjust the frame length of the bicycle, the cam lever 52 can be moved to the position shown in Figure 4b In the shown release position, the cam 521 and the nut 511 of the cam lever 52 will not be pressed against the outer surface of the second frame part 40 temporarily, and the user can easily slide the first frame part 30 and the second frame part 40 again. The frame part 40 adjusts the frame length of the bicycle to a suitable length, and then reuses the fixer 50 to fix the first frame part 30 and the second frame part 40 in a relatively immobile fixed position, so that the bicycle frame The length of the frame is maintained at the adjusted length; wherein the nut 511 is rotatably screwed to the tail end of the pull rod 51, the position of the nut 511 can be adjusted by turning the nut 511, and the cam lever 52 can be moved When reaching the release position as shown in Figure 4b, the cam 521 and the nut 511 of the cam lever 52 will not be pressed against the outer surface of the second frame part 40 for the time being, and the cam lever 52 is moved to the position shown in Figure 4b. In the tight position shown in 4a, the cam 521 and the nut 511 of the cam lever 52 are pressed against the outer surface of the second frame part 40 .

The above description does not limit the technical scope of the present invention in any way. All modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the scope of the technical solution of the present invention.

Claims (9)

1. one kind can have flexible and folding bicycle frame structure concurrently, comprise: a front vehicle frame and a Rear frame, it is connected to each other that this front vehicle frame and this Rear frame pass through a hinge connector, wherein this front vehicle frame and this Rear frame can with this hinge connector for mutual doubling to folding states of mid point and be expanded to mutually a using state, and this hinge connector has a locking device in order to this front vehicle frame and this Rear frame are maintained this using state; It is characterized in that: described front vehicle frame comprises one first vehicle frame portion, one second vehicle frame portion and a fixer, this the second vehicle frame portion is connected with described Rear frame by described hinge connector, this the first vehicle frame portion and this second vehicle frame portion are with can together with the composition of relations of relative sliding, make this first vehicle frame portion can slide between a primary importance and a second place relative to this second vehicle frame portion, wherein this first vehicle frame portion can be fixed on relative motionless fixed position with this second vehicle frame portion and discharge from this fixed position by this fixer.

2. can have flexible and folding bicycle frame structure according to claim 1 concurrently, it is characterized in that: described hinge connector is a kind of hinge, described locking device is a kind of Quick-dismantling construction being arranged at this hinge.

3. can have flexible and folding bicycle frame structure according to claim 1 concurrently, it is characterized in that: described second vehicle frame portion is a kind of body of hollow, described first vehicle frame portion is the pipe fitting that can slide along the axis direction of the body in this second vehicle frame portion.

4. can have flexible and folding bicycle frame structure according to claim 1 concurrently, it is characterized in that: described fixer is a kind of Quick-dismantling construction, this fixer passes the transversal surface in described first vehicle frame portion and described second vehicle frame portion, this fixer can by the direction packing of the sidewall in this first vehicle frame portion towards this second vehicle frame portion, in order to be clipped together tightly in this first vehicle frame portion and this second vehicle frame portion.

5. can have flexible and folding bicycle frame structure according to claim 4 concurrently, it is characterized in that: described first vehicle frame portion has the perforation of a sleeve configuration, described fixer comprises a pull bar and a cam driving lever, this pull bar of this fixer passes the perforation of the transversal surface in described second vehicle frame portion and this sleeve configuration in this first vehicle frame portion, the front end of this pull bar passes the outside in this second vehicle frame portion, this cam driving lever is pivoted with in the front end of this pull bar, the tail end of this pull bar passes the outside in this second vehicle frame portion, a rotating nut is provided with at the tail end of this pull bar, this cam driving lever comprises a cam and is connected to a driving lever of this cam, the eccentric shaft of this cam is hubbed at the front end of this pull bar.

6. can have flexible and folding bicycle frame structure according to claim 1 concurrently, it is characterized in that: described hinge connector comprises one second wing plate being fixed on described front vehicle frame and one first wing plate being fixed on described Rear frame, one end of this first wing plate and this second wing plate is articulated rotationally by a pivot, described locking device comprises a pull bar and a cam driving lever, at the other end of this first wing plate and this second wing plate, there is one first breach and one second breach respectively, the opening of this first breach extends to the edge of this first wing plate, the opening of this second breach extends to the edge of this second wing plate, this pull bar passes this first breach and this second breach with the relation of easy fit, the tail end of this pull bar passes the outside of this second wing plate, this tail end of this pull bar is hubbed at the outside of this second wing plate rotationally, the front end of this pull bar passes the outside of this first wing plate, this cam driving lever comprises a cam and is connected to a driving lever of this cam, the eccentric shaft of this cam is hubbed at the front end of this pull bar.

7. can have flexible and folding bicycle frame structure according to claim 6 concurrently, it is characterized in that: described Rear frame comprises: a Seat stay, a Chain stay, a standpipe and a front frame, this standpipe, this Seat stay and this Chain stay form a kind of leg-of-mutton structure, one end of this front frame is fixedly connected on this standpipe, the other end of this front frame stretches out towards the direction of described front vehicle frame, described first wing plate is fixedly arranged on one end of this front frame, and this second wing plate is fixedly arranged on the one end in described second vehicle frame portion.

8. can have flexible and folding bicycle frame structure according to claim 7 concurrently, it is characterized in that: the upper end of described Seat stay is fixedly connected on the position of described standpipe near upper end, the upper end of described Chain stay is fixedly connected on the position of this standpipe near lower end, forms this leg-of-mutton structure together with this Seat stay is connected to each other with this Chain stay lower end.

9. can have flexible and folding bicycle frame structure according to claim 7 concurrently, it is characterized in that: described front frame comprises a stirrup, the bottom of this stirrup is fixedly connected on the position of described standpipe near lower end, the top of this stirrup is fixedly connected on the downside of this front frame, and this standpipe, this front frame and this stirrup form a kind of triangular structure.