TWM549733U - Mechanism of dual-arm cranks - Google Patents

Abstract

Despite of a conventional folding bicycle could be folded, the body size of a folded bike is still too large and not very convenient to carry. Also the pedals, handlebar, wheels or chains and other exposed parts might make dirty or scrape the surrounding objects. In order to solve this problem, the present invention provides a novel folding bicycle includes front-folding mechanisms, rear-folding mechanisms and dual-arm folding cranks. By longitudinally folding the front wheel of the bike via the four-linkage part, then by longitudinally folding the rear wheel of the bike via the rocker arm, finally, to make both wheels be stored into the designed space of front frame and rear frame respectively. Then, by laterally folding the middle part of the bike to make the front frame and the rear frame be folded side by side. By the mechanisms described above, the folded bike could become a luggage-like cuboid. All the exposed parts are covered into the frame area. Finally by utilizing the handlebar and the auxiliary wheels, the folded bike is very easy to drag and carry.

Description

Double-arm crank mechanism

The present invention relates to a folding bicycle, and a folding mechanism and a crank for a folding vehicle, and more particularly to a folding bicycle which is folded to form a trunk type such as a trunk type box.

The small-wheel-folding bicycle (referred to as a small folding) can be reduced in size by the folding body for non-riding, so that the user can carry or store it, but in general, there are still pedals and handles after folding. The problem of exposed parts such as wheels or chains is not ideal for soiling or scratching other objects beside them. In addition, in order to further reduce the size of the body after folding, the car has sacrificed the riding performance when the small folding is deployed. In contrast, some of the cars with better riding and easy handling are folded. The rear volume is too large, occupies the storage space and is not conducive to carrying out.

In order to solve the above problems, the present invention discloses a "folding car" and a "folding mechanism" and a "two-arm crank" for a folding car, so that the folding car has a riding geometry equivalent to that of a general mountain bike or a road car. After the folding, the overall approximation is correct, especially the pedals, handlebars, wheels or chains are not exposed. After folding, the volume is similar to the commercially available small and medium-sized suitcases, and is equipped with a tow bar and an auxiliary wheel for convenient use. They go out to carry and store.

The technical features contained in the folding cart, the folding mechanism, and the double-arm crank of the present invention will now be exemplified by the following embodiments. A preferred first embodiment of the present invention is a folding mechanism for a folding vehicle, comprising: a head bowl member, a head tube bundle member, a wheel single arm and a link member, wherein the head portion and the head tube bundle The first end of the piece is pivotally connected, the lower part of the head cup is pivotally connected to the first end of the wheel single arm, and the second end of the head tube bundle is connected to the wheel single arm through the connecting rod member, and the head bowl is connected via the above components The piece, the head tube bundle, the wheel single arm and the link member together form a four-bar linkage.

In another aspect of the folding mechanism, the head tube bundle member is provided with a hollow short tube for connecting the handle to the hollow short tube and coupled to the head tube bundle member, and the second end of the wheel single arm is used for Pivot a wheel.

Further, when the upper portion of the head cup member is pivotally connected to the first end of the head tube bundle member, the pivoting shaft is pivoted. When the handle is pressed down to drive the head tube bundle to rotate, the head tube bundle member drives the link member to move. The connecting rod member moves the single arm movement of the wheel to make the wheel upward and the handle are folded downward synchronously until the head tube bundle is rotated to the designated position.

A preferred second embodiment of the present invention is a folding cart comprising: a front frame and a rear frame, the front frame and the rear frame are connected by at least one hinge point; and the first folding mechanism is disposed at the front The front side of the frame includes: a head bowl member, a head tube bundle member, a front wheel single arm and a link member, and the upper portion of the head bowl member is pivotally connected to the first end of the head tube bundle member, and the lower portion of the head bowl member and the front wheel single arm The first end is pivotally connected, and the second end of the head tube bundle member is coupled to the front wheel single arm through the connecting rod member, so that the head bowl member, the head tube bundle member, the front wheel single arm and the link member form a four-link group, wherein The second end of the front wheel single arm is further provided with a front wheel, and the first folding mechanism is coupled to the front frame by the head cup member; the hand coupled to the first folding mechanism by being worn to the head tube bundle member Cushion and seat tube; and The second folding mechanism is disposed on the rear side of the rear frame, and includes: a rear wheel single arm, the first end of the rear wheel single arm and the rear frame are pivotally connected to each other via a folding pivot, and the second end of the rear wheel single arm is further equipped a rear wheel is provided; when the first folding mechanism and the second folding mechanism are folded, the front wheel and the rear wheel are respectively folded longitudinally to the respective accommodation spaces of the front frame and the rear frame, and the seat tube is lowered and collected in the rear portion. The housing space of the frame, the front frame and the rear frame are folded laterally face to face with at least one hinge point as a pivoting pivot.

Another aspect of the folding bicycle further includes: a five-way spindle member having a right card hole and a left card hole; and a right-hand arm crank and a left-hand arm crank, a right-hand arm crank connecting the right foot pedal, and a left-hand arm The crank is connected to the left foot pedal; wherein the five-way main shaft member is disposed on the rear frame, the right-hand arm crank is coupled to the right card hole, and the first large disc and the foldable joint member are included between the left-hand arm crank and the left card hole. The left side of the crank, the first large disc, the foldable joint and the left snap are combined, and the foldable joint is used to make the left and right cranks can be folded up and down.

Another aspect of the folding vehicle further includes: a first transmission chain, a first flywheel, a second large disk, a second transmission chain, and a second flywheel; further, the first large disk is connected and drives the first through the first transmission chain The flywheel, the first flywheel and the second folding mechanism share the same mandrel with the single wheel and the second large disk. The first flywheel and the second large disk are integrally linked, but are not interlocked with the rear wheel single arm. Finally, The second large disk driven by the first flywheel is connected via the second transmission chain and drives the second flywheel and the rear wheel.

In another aspect of the folding vehicle, the right-hand arm crank includes a foldable link for connecting to the right card hole, and the foldable link member allows the right-hand arm crank to be folded up and down.

In another aspect of the folding cart, the right side arm crank includes a lock for attaching to the right card hole, and the lock body fixes the right side arm crank upward to the right card hole.

In some aspects of the folding cart described above, the foldable link is a detachable quick release component such that the left and right arm cranks are detachable from the left and right snap holes, respectively.

In some aspects of the folding cart described above, the right foot pedal is coupled to either end of the right arm crank by the first foldable pedal seat, and the left foot pedal is coupled to the left arm crank by the second foldable pedal seat At either end, further, the right and left foot pedals can be folded and accommodated into the space enclosed by the right arm crank and the left arm crank, each forming a flush plane.

In another aspect of the folding bicycle, when the folding bicycle is continuously folded, the right foot pedal is stored in the space enclosed by the right-hand arm crank, and the right-hand arm crank is upward, and the left foot pedal is also stored. The space enclosed by the crank of the left side of the arm, and the foldable link of the left arm crank is folded upward, so that the left and right arms are in a state of facing the face and forming a plane with the rear frame. Finally, when the current frame and the rear frame are folded laterally face-to-face with at least one hinge point as a pivoting pivot, the folding car will form an approximately rectangular luggage-type case, and the handle can be lowered into the luggage type after being lowered. In the space surrounded by the cabinet.

In another aspect of the folding vehicle, the method further includes: at least one auxiliary wheel disposed on the front frame or the rear frame, when the handle is pulled out, the holding direction of the handle can be rotated, and at least one auxiliary is utilized The baggage type box after the towing is folded.

In another aspect of the folding bicycle, the front frame and the rear frame are frame-type frame structures composed of a plurality of long and short frame strips, frame tubes, pipes or shackles.

In another aspect of the above folding bicycle, the first transmission chain and the second transmission chain are one of a chain, a belt, a gear or a transmission shaft.

A preferred third embodiment of the present invention is a dual-arm crank mechanism for a folding vehicle, comprising: a first long arm and a second long arm that are symmetric and parallel; and a first short arm for connecting The first long arm and the second long arm form a U-shaped structure; and the second short arm is connected to the opening of the U-shaped structure; the second short arm is connected to the foot pedal as a foldable pedal seat, and When the folding pedal seat is folded, the foot pedal can be folded and accommodated into the space enclosed by the U-shaped structure to form a flush planar structural component; wherein the first short arm is connected with the connecting member, and the connecting member is made through the connecting member The aforementioned flush planar structural components can be incorporated into a folding cart.

In another aspect of the above-described double-arm crank mechanism, the connecting member is a foldable connecting member, and the above-mentioned flush planar structural component can be folded up and down through the foldable connecting member.

In another aspect of the above-described dual-arm crank mechanism, the foldable link is fixedly coupled to the folding cart.

In another aspect of the above-described dual-arm crank mechanism, the foldable link is detachably coupled to the folding cart.

100‧‧‧Folding mechanism

10‧‧‧ head bowls

11‧‧‧ head tube bundle

12‧‧‧Connecting parts

13‧‧‧ wheel single arm

101‧‧‧Top part of the bowl

102‧‧‧Under the head of the bowl

111‧‧‧First end of the head tube bundle

112‧‧‧The second end of the head tube bundle

113‧‧‧ hollow short tube

121‧‧‧The first end of the connecting rod

122‧‧‧The second end of the connecting rod

131‧‧‧ First end of the wheel single arm

132‧‧‧Board of the single arm of the wheel

133‧‧‧ the second end of the wheel single arm

200‧‧‧ faucet assembly

14‧‧‧ Wheels

15‧‧‧handle

300‧‧‧Folding car

31‧‧‧Front frame

32‧‧‧Hinging point

33‧‧‧ rear frame

34‧‧‧ seat cushion

35‧‧‧ seat tube

110‧‧‧First folding mechanism

16‧‧‧Front wheel single arm

161‧‧‧The first end of the front wheel single arm

162‧‧‧The front wheel single arm pivot hole

163‧‧‧The second end of the front wheel single arm

17‧‧‧handle

18‧‧‧ Front wheel

120‧‧‧Second folding mechanism

26‧‧‧ Rear wheel single arm

261‧‧‧The first end of the rear wheel single arm

262‧‧‧second end of the rear wheel single arm

27‧‧‧Folding pivot

28‧‧‧ Rear wheel

400‧‧‧Folding car

50‧‧‧5-way spindle parts

501‧‧‧Right card hole

511‧‧‧left card hole

503‧‧‧right pedal

505‧‧‧Right arm crank

513‧‧‧ Left foot pedal

515‧‧‧left arm crank

520‧‧‧The first big market

530‧‧‧First pass chain

540‧‧‧First Flywheel

550‧‧‧ second largest

560‧‧‧Second wheel chain

570‧‧‧second flywheel

38‧‧‧Assistance wheel

60‧‧‧Bisly crank

601‧‧‧First long arm

602‧‧‧ second long arm

611‧‧‧First short arm

612‧‧‧second short arm

613‧‧‧ pedals

625‧‧‧Foldable links

630‧‧‧Locker

Figure 1 is a folding mechanism for a folding cart proposed in the present invention.

Figure 2A is a faucet assembly composed of the folding mechanism of the present invention combined with the handlebar and the wheel.

Figures 2B and 2C show the folding mechanism of the novel folding mechanism and the handlebar and the whole wheel.

Figures 3A and 3B show an embodiment of the novel folding bicycle of the present invention.

Figures 3C, 3D and 3E show the overall folding operation of the folding bicycle.

4A and 4B are another embodiment of the novel folding bicycle of the present invention.

The 5A to 5J drawings show the folding operation mode of the whole folded bicycle.

Fig. 5K is a luggage type box structure in which the folding bicycle of the present invention is folded and includes at least one auxiliary wheel.

Figures 6A and 6B show the double-arm crank mechanism and the folding operation mode of the novel type for folding bicycle.

The folding cart and the folding mechanism for the folding cart and the double-arm crank mechanism of the present invention will be described in detail with reference to the drawings, including the folding mechanism, the folding cart and the double-arm crank. The description of the components, the connection between the various components, and the manner in which the components are operated, it is to be understood that the preferred embodiments are merely illustrative of the novel creations and are not intended to limit the embodiments of the present invention. Therefore, the creations realized by simple changes based on the spirit of the present invention should belong to the equal scope of the claimed claims, and at the same time in the novel scope of the present invention, the technical features or technical means described in the present invention are simple. Combinations, modifications, substitutions, transfers, etc., and those of the prior art may not be separated from the scope of the novel and the scope of claims claimed.

The effects of the preferred embodiments, embodiments, and technical means of the present invention can be further understood from the following detailed description and drawings.

In principle, the same components shown in different drawings are denoted by the same symbols. In order to clearly indicate the symbols of the respective components, the symbols of the same components in the drawing will be omitted and will not be displayed repeatedly. In the drawings, only the symbols of the first-time components are indicated, but they can be marked repeatedly if necessary, as described above.

1 is a folding mechanism (100) for a folding bicycle, comprising: a head bowl member (10), a head tube bundle member (11), a wheel single arm (13), and a link member (12). Wherein, the head bowl member (10) is a component having an appearance of an approximately L shape, and is a main component of the folding mechanism (100) and the frame assembly, and the head bowl member (10) is centered on the upper portion of the head bowl member. (101) pivotally connected to the first end (111) of the head tube bundle member, pivoting the lower portion (102) of the head cup member to the first end (131) of the wheel single arm, and then the second portion of the head tube bundle member The end (112) is coupled to a pivot hole (132) on the single arm of the wheel through the connecting rod member (12), wherein The first end (121) of the rod is pivotally connected to the second end (112) of the head tube bundle member, and the second end (122) of the link member is pivotally connected to the pivot hole (132) of the wheel single arm, The connection between the components enables the head cup member (10), the head tube bundle member (11), the wheel single arm (13) and the link member (12) to form a collapsible folding mechanism such as the same four-link group .

Referring to FIG. 1 and FIG. 2A simultaneously, the head tube bundle member (11) of the folding mechanism (100) is provided with a hollow short tube (113) for passing the components of the handle (15) through the hollow short tube. (113) in combination with the folding mechanism (100), and another portion of the folding mechanism (100) is coupled to the wheel (14) by the second end (133) of the wheel single arm being coupled to the wheel axle, via the folding mechanism ( 100), after the handlebar (15) and the wheel (14) are assembled together, it is a faucet assembly (200) having a folding function.

Continuing to refer to Figures 2B and 2C, including Figures 2A, 2B to 2C, the mechanism of the mechanism of the faucet assembly (200) of the assembled folding mechanism (100) before, during, and after folding is shown. Continuous operation mode: the pivoting shaft is pivoted at the upper portion (101) of the head cup member and the first end (111) of the head tube bundle member, and the head tube bundle is driven when the handle (15) is pressed down ( 11) When rotating, the head tube bundle member (11) drives the relative movement of the link member (12), and the link member (12) moves the wheel single arm (13) to move the wheel (14) upwards and the handlebar ( 15) Folded downwardly synchronously until the head tube bundle (11) is rotated to the designated position to cause the handle (15) to assume a horizontal posture, thus providing the wheel (14) with a function of longitudinal folding.

FIG. 3A is an embodiment of the folding bicycle (300) of the present invention. In order to clearly illustrate the folding mechanism of the folding vehicle and the "frame portion", the folding bicycle illustrated in FIG. 3A temporarily does not include the transmission system and the foot. Step on the parts.

Referring now to Figures 3A and 3B and in conjunction with Figure 1, the folding cart (300) shown in Figures 3A and 3B includes: a front frame (31), a rear frame (33), a handlebar (17), and a first Folding mechanism (110), front The wheel (18), the seat cushion (34), the seat tube (35), the second folding mechanism (120) and the rear wheel (28) are connected as follows: the front frame (31) and the rear frame ( 33) connected by one or more hinge points (32), the first folding mechanism (110) is disposed on the front side of the front frame (31) (near the faucet side), which comprises a head bowl (10), a head tube The tube bundle member (11), the front wheel single arm (16) and the link member (12) are centered on the head bowl member (10), and the upper portion (101) of the head cup member and the first end of the head tube bundle member (111) Pivoting, pivoting the lower portion (102) of the head cup member to the first end (161) of the front wheel single arm, and then connecting the second end (112) of the head tube bundle member to the front wheel through the connecting rod member (12) a single arm pivot hole (162), wherein the first end (121) of the link member is pivotally connected to the second end (112) of the head tube bundle member, and the second end (122) of the link member is aligned with the front wheel The pivot hole (162) of the arm is pivotally connected, and the head cup member (10), the head tube bundle member (11), the front wheel single arm (16) and the connecting rod member (12) together form a four-link group, and The second end (163) of the front wheel single arm is more coupled to the axle and coupled to the front wheel (18).

The first folding mechanism (110) is coupled to the front frame (31) by the head cup member (10), and the joint portion of the head cup member (10) and the front frame (31) is axially upwardly facing. When the folding vehicle (300) is deployed, the front wheel (18) can be rotated left and right. When the front wheel (18) is to be folded, the front wheel (18) can be operated only by operating the four-link group of the first folding mechanism (110). ) Fold in a longitudinal fold.

The aforementioned folding cart (300) further includes: a handle for riding control (17), which is provided by the handlebar (17) being pierced and fixed to the hollow short tube (113) of the head tube bundle member (11). The first folding mechanism (110) is combined; the seat cushion (34) and the seat tube (35) for carrying the person, and the seat tube (35) is fixed under the seat cushion (34), and the seat tube (35) is fixed on the seat tube (35) a rear frame (33), and the length can be adjusted up and down so that the height of the seat cushion (34) can meet the riding requirements of different body types; and the second folding mechanism (120) is disposed on the rear side of the rear frame (33) (near the rear wheel side), which includes a rear wheel single arm (26) and a folding pivot (27), between the first end (261) of the rear wheel single arm and the rear frame (33) via a folding pivot (27) ) pivotal to each other, rear wheel single arm The second end (262) is extended to the axle and coupled with the rear wheel (28), wherein the folding pivot (27) and the rear frame (33) are pivotally connected to each other when the rear wheel is to be folded (28), the rear wheel (28) can be folded in a longitudinal manner by merely operating the folding pivot (27) of the second folding mechanism (120).

Referring to Figures 3C, 3D to 3E, the continuous operation of the mechanism of the assembled folding cart (300) during the folding process is shown: when the first folding mechanism (110) and the second folding mechanism ( 120) When folded, the front wheel (18) and the rear wheel (28) are respectively folded in the "longitudinal direction" to the respective accommodation spaces of the front frame (31) and the rear frame (33), and thereafter the seat tube ( 35) Lowering the space occupied by the rear frame (33), and the seat cushion (34) is in close contact with the upper edge of the rear frame (33) (Fig. 3C), the front frame (31) and the rear car The frame (33) is folded in a "transverse" direction with one or more hinge points (32) as a pivotal axis (Fig. 3D), and finally the length of the handle (17) is shortened for storage (Fig. 3E).

3A, 3B, 4A, 4B and FIG. 6, compared to the folding cart (300), FIG. 4 is illustrated as a folding cart (400) including a transmission system and a pedal part, except the folding cart (300). In addition to the included components, the folding cart (400) further includes: a five-way spindle member (50), a right-hand arm crank (505), a left-hand bell crank (515), a first large disc (520), and a first The transmission chain (530), the first flywheel (540), the second large disk (550), the second transmission chain (560), and the second flywheel (570) are connected as follows: the five-way spindle member (50) is disposed at the rear The frame (33) is close to the lower part of the side of one or more hinge points (32), and has a right card hole (501) and a left card hole (511) at both ends (Fig. 3A, 3B), and the right arm crank (505) is coupled to the right card hole (501), and the first large disk (520) is interposed between the left arm crank (515) and the left card hole (511), and is foldable as shown in FIG. The connecting member (625) is connected to the left card hole (511), and the pedal assembly is a left-hand arm crank (515), a first large plate (520), a foldable link (625) and a left card hole (511). The sequence is combined with the left card hole (511) of the five-way spindle member (50), and the foldable link (625) It is also used to make the left arm crank (515) can be folded up and down (Fig. 6B), wherein the left side The bell crank (515) is connected to the left foot pedal (513), the right side arm crank (505) and the right foot pedal (503) (as shown in Figs. 4A, 4B) for riding and pedaling.

The transmission system of the folding cart (400) is as shown in FIGS. 4A and 4B. When the left and right foot grips are driven to step on the left and right foot pedals, the left and right arms are cranked (515) and the first large disc (520). The rotation of the first transmission chain (530) is transmitted to the first flywheel (540), and then the rotation of the first flywheel (540) drives the operation of the second large disk (550) through the second transmission chain ( 560) continuing to transfer the power of the second large disk (550) to the second flywheel (570), and finally, the rear wheel (28) is driven by the rotation of the second flywheel (570); it should be noted that the second folding mechanism (120) The operation of the folding member and the rear wheel power transmission component are independent of each other, and the first flywheel (540) is shared with the second folding mechanism (120) after the wheel single arm (26) and the second large disk (550). a same mandrel, wherein the first flywheel (540) and the second large disk (550) are integrally linked, and the folding pivot (27) shares the same axis with the first flywheel (540) and the second large disk (550), but The rear wheel single arm (26) is only sleeved on the outer layer of the concentric shaft, so the folding of the rear wheel single arm (26) does not interfere with the transmission of the first flywheel (540) and the second large disk (550), nor does it versus This linkage.

It is worth mentioning that the transmission system for the folding bicycle (400) belongs to the secondary speed increasing transmission system. The so-called "secondary speed increasing" refers to: because the disk diameter of the first large disk (520) is larger than the first flying wheel (540), the diameter of the disk between the first large disk (520) and the first flywheel (540) can be used to achieve the first speed increase effect, when the first flywheel (540) passes through the first transmission chain (530) while being driven by the first large disk (520), since the first flywheel (540) and the second large disk (550) are integrally linked, the first flywheel (540) and the second large disk (550) are maintained. One to one power output, the second large disk (550) drives the second flywheel (570) through the second transmission chain (560), and then uses the disk between the second large disk (550) and the second flywheel (570) The difference in the diameter achieves the effect of the second increase in speed, wherein since the second flywheel (570) is fixed to the rear wheel (28), the power is continuously transmitted to the rear wheel (28).

For example, the ratio of the diameter of the first large disk (520) to the first flywheel (540) is 2:1, and the ratio of the second large disk (550) to the second flywheel (570) is 3:1. After the second speed increase, the total speed increase effect is 6:1. When the ride on the pedal drives the first large plate (520) to rotate one turn, the second flywheel (570) will be rotated six times in conjunction with each other. It can make the power efficiency of stepping on the front of the body more than six times, and it makes the pedaling more labor-saving. However, it is still not limited by the above-mentioned disk diameter ratio, and reasonable speed increase effect can be obtained through proper configuration. Finally, compared with the conventional folding truck with a single large single drive and a single transmission chain, the use of the two-speed folding bicycle with the two-speed small-sized toothed disc also has the advantage of reducing the storage volume after folding.

The mechanism for the pedal portion of the folding bicycle (400) is further described as follows: the left and right side of the folding vehicle (400) and the detailed components of the left and right side pedals of the folding vehicle (400) as shown in Figs. 4A and 4B The composition is further presented in FIG. 6. For convenience of explanation, FIG. 6 only separately shows the right-hand arm crank (505) including the right foot pedal (503) and the left-hand arm crank including the left foot pedal (513) ( 515) and a portion of the connecting member that connects the left and right side arms to the five-way spindle member (50).

The dual-arm crank (60) mechanisms on both sides include: a first parallel arm (601) and a second long arm (602) that are symmetric and parallel, and are used to connect the first long arm (601) and the second long arm (602) together forming a first short arm (611) of a U-shaped structure, and a second short arm (612) for connecting an opening of the U-shaped structure, as shown in FIG. 6A, a second short arm (612) The two ends are respectively disposed on the first long arm (601) and the second long arm (602) to form a pivotal connection so that the foot pedal (613) connected to the second short arm (612) can be Folding or unfolding, as illustrated in Figures 6A-(1) and 6A-(2), the foot pedal (613) sandwiched in the space enclosed by the U-shaped structure is in an unfolded state (Fig. 6A-( 1) shown in the state of the folding state (as shown in Fig. 6A-(2)), when the foot pedal (613) is folded and received into the folding space of the U-shaped structure, the foot pedal (613) ) and the double-arm crank (60) will collectively form a flush planar structural component, such as This allows the pedal unit of the folding cart (400) to not interfere with the interaction of adjacent other component generating mechanisms when folded.

The two-armed cranks (60) on both sides are respectively coupled to the five-way main shaft member (50) of the folding cart (400) shown in FIG. 4 by the connection of the respective first short arms (611) and the at least one connecting member. On the left and right side of the card hole, the aforementioned connecting element comprises two embodiments, one of which is fixed and non-foldable, and the other two are fixed and foldable, in the embodiment illustrated in FIG. 6A, the right side The double-arm crank (60) is fixed to the right side hole of the five-way main shaft member (50) of the folding cart (400) with a locking member (630), and the left-hand double-arm crank (60) is a foldable connecting member. (625) fixed to the left side of the five-way main shaft member (50) of the folding cart (400), as shown in the crank folding operation of Figures 6B-(1) and 6B-(2), wherein only the left side The double-arm crank (60) allows the crank portion to be folded up and down by the use of the foldable link (625), but the right-hand double-arm crank (60) is locked by the extension mechanism without the foldable mechanism The firmware (630) is fixed such that the crank portion is constrained in an upward direction, depending on whether the crank portion is retractable with a lock (630) or a foldable link (625) to connect the crank.

In some embodiments of the folding cart (400), in addition to the embodiment in which the left-hand double-arm crank (60) is foldable and the right-hand double-arm crank (60) is not foldable, the link can be simply replaced. Another embodiment in which the left-hand double-armed crank (60) is fixed with a lock (630) and is not foldable, and the right-hand double-armed crank (60) is fixed and foldable by a foldable link (625), The manner of replacing the connecting component with the above includes the two-armed crank (60) fixed to the left and right sides by the foldable joint (625) so that both are foldable and fixed by the fastener (630). The double-armed cranks (60) on the left and right sides make the two unfoldable embodiments.

In some implementations of the folding cart (400), the foldable link (625) is a detachable quick release component such that the left arm crank (515) and the right arm crank (505) are separately accessible from the five links. The left card hole (511) and the right card hole (501) of the spindle member (50) are detached, so that the crank replacement is more convenient, and in addition, the foot pedal (613) shown in FIGS. 6A and 6B can be removed. In addition to the folding storage, the quick release component that is easy to disassemble and install can also be used to join the foot pedal to the crank, so in some implementations of the folding bicycle (400), the left-hand arm crank (515) and the right-hand arm crank ( The 505) is detachable, and the left foot pedal (513) and the right foot pedal (503) are also detachable.

The folding vehicle (400) shown in Figures 4A and 4B will now be described to illustrate the complete folding operation of the vehicle, and with reference to Figures 5A to 5J (including two viewing angles, such as Figures 5A-(1) and Figures 5A-(2) The illustrations are respectively shown in a one-step folding operation, as detailed below: Figure 5A shows the initial state of the folding vehicle (400) fully deployed and available for riding, in the order of folding of the folding vehicle (400) In the first step, first step on the left and right side pedals so that the right arm crank (505) and the left arm crank (515) are both in parallel with the seat tube (35) (see Figure 5B- (1) and FIG. 5B-(2)); in the second step, the right foot pedal (503) is folded and stored to the right-hand arm crank (505), and the left foot pedal (513) is folded and stored to the left side. The bell crank (515) (as shown in Fig. 5C-(1) and Fig. 5C-(2)); the third step, the left arm crank (515) is reversed by the upward folding of the foldable link (625) The fold-up state of the face-to-face of the lining between the folded-up and the right-hand locked right-hand crank (505) (as shown in Figures 5D-(1) and 5D-(2)), after which the fold is folded The foot pedals on both sides and the bell crank and the rear frame form a plane in space , do not interfere with each other, and there is no problem with the exposed parts, which is conducive to reducing the overall volume of the whole vehicle after the folding car (400) is folded; the fourth step, holding the handshake (17) forward and pressing down A folding mechanism (110) rotates the faucet assembly (200) to rotate the handle (17) outwardly and the front wheel (18) inwardly (as shown in Fig. 5E-(1) and Fig. 5E-( 2)), then the rear wheel (28) is folded by the folding pivot (27) of the second folding mechanism (120), and the front wheel (18) and the rear wheel (28) are respectively folded It is folded into the space of the front frame (31) and the rear frame (33) by the "longitudinal" (as shown in the figure). 5F-(1) and FIG. 5F-(2)), from the operation of FIGS. 5E to 5F, since the folding vehicle (400) uses a two-stage transmission chain to constitute the transmission system, when the rear wheel (28) is longitudinally At the time of folding, the first transmission chain (530) and the second transmission chain (560) are not detached due to the folding, so that the components related to the transmission system can be effectively accommodated.

In the fifth step, the seat tube (35) is lowered into the accommodation space of the rear frame (33), and the seat cushion (34) is closely attached to the upper edge of the rear frame (33) (Fig. 5G-(1) And FIG. 5G-(2)); in the sixth step, the front frame (31) and the rear frame (33) are face-to-face "transversely" with one or more hinge points (32) as pivoting pivots. The folding, by this folding, makes the folding cart (400) form an approximately rectangular luggage-type box (as shown in Figure 5H-(1) and Figure 5H-(2)); finally, the lifting handle (17) will be folded. The car (400) stands upright and uses the handlebar (17) as a handle for holding, lifting and towing the luggage compartment (as shown in Figure 5I-(1) and Figure 5I-(2)). When the folded folding cart (400) is stored or stored, the handlebar (17) can be lowered and hidden in the space enclosed by the luggage compartment (Fig. 5J-(1) and Fig. 5J-(2) As shown in the above, after the folding cart (400) is operated as shown in FIGS. 5A to 5J, the components including the pedal, the handlebar, the wheel or the chain are completely folded to the front and rear frames. The accommodation space; it should be noted that the folding order of the folding cart (400) is not limited to the above illustrated example of FIG. 5.

As shown in FIG. 5K (including two viewing angles, such as those shown in FIG. 5K-(1) to FIG. 5K-(4) respectively), another aspect of the folding bicycle (400) further includes: being disposed at the front portion At least one auxiliary wheel (38) of at least one of the frame (31) or the rear frame (33), when the handle (17) is pulled out, the holding direction of the handle (17) can be rotated and utilized At least one auxiliary wheel (38) tows the folded luggage box.

In another aspect of the folding bicycle, the front frame (31) and the rear frame (33) are frame-type frame structures composed of a plurality of long and short frame strips, long and short frame tubes or long and short tubes. It is also possible to change and combine a plurality of pieces to form a part of the frame of the folding bicycle (400).

In another aspect of the above folding cart, the first transmission chain (530) and the second transmission chain (560) are one of a chain, a belt, a gear or a transmission shaft.

In summary, the folding cart, the folding mechanism, and the double-arm crank mechanism provided by the embodiments of the present invention can effectively solve the problem that many small parts are exposed after the folding is folded. The vertical and horizontal folding methods exemplified in this case can completely store the components into the luggage-type box formed by the front and rear frames of the frame. The design of the secondary chain makes the diameter of the first large plate and the second large plate The large-sized disk diameter smaller than the general commercially available small folding makes the folding bicycle proposed by the present invention can effectively reduce the volume of the vehicle body after folding, and the right to be protected by the present invention is mainly attached to the patent application scope.

60‧‧‧Bisly crank

601‧‧‧First long arm

602‧‧‧ second long arm

611‧‧‧First short arm

612‧‧‧second short arm

613‧‧‧ pedals

625‧‧‧Foldable links

630‧‧‧Locker

Claims (5)

A double-arm crank mechanism includes: a first long arm and a second long arm that are symmetric and parallel; and a first short arm for connecting the first long arm and the second long arm to form a U-shape a second short arm for connecting the opening of the U-shaped structure; the second short arm is coupled to a foot pedal as a foldable pedal seat, when the folding pedal base is folded The footrest can be folded and received into the space enclosed by the U-shaped structure to form a flush planar structural component; wherein the first short arm is further connected with a connecting member to make the aforementioned double-arm crank The mechanism is coupled to the left or right side of the five-way spindle of a folding cart via the link. The double-arm crank mechanism according to claim 1, wherein the connecting member is a foldable connecting member, and the foldable connecting member can fold the structural component of the flush plane up and down. The double-arm crank mechanism of claim 2, wherein the foldable link is fixedly coupled to the folding cart. The double-arm crank mechanism of claim 2, the foldable link being detachably coupled to the folding cart. The two-arm crank mechanism according to any one of claims 1 to 4, wherein the foot pedal connected to the second short arm is detachable.