JP6546103B2 - Folding vehicle - Google Patents

Description

The present invention relates to a folding vehicle provided with a folding mechanism.

  Conventionally, various types of folding vehicles have been proposed. For example, Patent Document 1 has a front frame and a rear frame connected to a handle holding portion that rotatably supports a handle frame portion, The rear end of the frame and the front end of the rear frame are pivotably connected at one pivoting axis to a deployed use state and a mountain fold non-use state, and provided with a locking mechanism for holding the deployed use state; There is disclosed a three-wheeled vehicle provided with a folding mechanism in which a front frame and a rear frame are rotationally moved in a mountain shape whose apexes are pivots by releasing a locking mechanism when folding.

  In addition, Patent Document 2 discloses a folding bicycle in which a frame and a rear fork between a front wheel and a rear wheel are hinged at a plurality of points and in which each hinge portion can be locked and unlocked by an operation at only one point. It is done.

JP, 2006-111222, A Unexamined-Japanese-Patent No. 10-291488

  The three-wheeled vehicle provided with the folding mechanism disclosed in Patent Document 1 unlocks the lock state in one operation and folds the front frame and the rear frame into a mountain shape with the pivot axis at the top. However, since the front frame is connected to the handle holding portion that rotatably supports the handle frame portion, the entire width is limited by the length of the front frame even in the folded state, and the size is sufficiently reduced. There is a problem that it can not do.

  Furthermore, in the deployed and used state, the locking mechanism and the portal-shaped contact for deployment and holding are stably held, but in the mountain-shaped folded and not used state, the front frame and the rear frame are not held. Therefore, there is a risk of risking inadvertent deployment.

  In addition, since the sitting position and the auxiliary handle connected to the sitting position move forward in the mountain-shaped folded non-use state, the center of gravity moves in the forward direction and becomes unstable, and the mountain-shaped folded non-use state There is a problem that it is difficult to maintain the standing state.

  Although the folding bicycle disclosed in Patent Document 2 is capable of locking and unlocking each hinge portion by the operation of one torque lever, what can be locked and unlocked by the one torque lever is between the front wheel and the rear wheel. Between the front frame, center frame and main frame only. For other parts, such as the handle post and seat post, each part is provided with a plurality of hinges, and the hinges are manually folded or lock mechanisms similar to the one torque lever described above. It is necessary to prepare in part. Therefore, when changing from the unfolded state to the folded state or vice versa, many operations are required, and there is a problem that the operation becomes complicated.

  The present invention has been made to solve the above-mentioned conventional problems, and it is possible to easily fold and unfold the vehicle, to fold it compactly, and to provide a folded vehicle in which the state maintenance in the folded state and the standing posture are stable. Intended to provide.

  In order to achieve the above object, a folding vehicle according to claim 1 is a folding vehicle capable of switching between a loaded state capable of being carried and a folded state for storage and conveyance, and a handle is attached to the upper end portion And a handle shaft holder to which the front wheel is attached at the lower end portion, a handle shaft holder rotatably supporting the handle frame, and a first front end portion is pivotally supported by the handle shaft holder and the first rotation shaft to the handle shaft holder A front frame which can be pivoted, and a first link whose front end is pivotally supported by a handle shaft holder and a second rotation shaft which is above the first rotation shaft and which is pivotable relative to the handle shaft holder A lever and a rear wheel are attached to the rear side, and a second front end portion is pivotally supported by the rear end portion of the front frame and the third rotation shaft. Rear end of the first link lever and the fourth rotation shaft, and the rear end is rearward of the second foremost end of the rear frame. A second link lever pivotally supported by the second front end portion and the fifth rotation shaft and rotatable with respect to the first link lever and the rear frame; While bringing the front end of the frame and the rear end of the rear frame close to each other in an inverted V shape, rotating the first rotating shaft as an axis brings the rear end of the front frame and the handle shaft holder into a V shape. It is characterized in that it is in a folded state.

  A folding vehicle according to claim 2 is the folding vehicle according to claim 1, wherein the front frame is provided with a positioning pin at a first primary front end rearward of the first front end, and the handle shaft holder is a steering wheel. Notched groove in the guide hole where the positioning pin is guided according to the rotation of the front frame with respect to the shaft holder, and at the end of the guide hole, in which the positioning pin fits in each of the opened state and the folded state And.

  A folding vehicle according to a third aspect is the folding vehicle according to the second aspect, wherein the guide hole is formed in an arc shape centering on the first rotation axis.

  A folding vehicle according to a fourth aspect is the folding vehicle according to the third aspect, wherein the notch groove is formed in a radial direction with respect to the arc-like guide hole.

A folding vehicle according to a sixth aspect of the present invention is the folding vehicle according to any one of the second to fifth aspects, wherein the lock handle operates the positioning pin in engagement with the notch groove and away from the notch groove And an inner cable for transmitting the operation by the lock handle to the positioning pin.

A folding vehicle according to a fifth aspect of the present invention is the folding vehicle according to any one of the second to fourth aspects, further comprising a biasing member for biasing the positioning pin in the direction of the notch groove.

A folding vehicle according to a seventh aspect of the present invention is the folding vehicle according to any one of the second to fourth aspects, wherein the biasing member biasing the positioning pin in the direction of the notch groove and the positioning pin to the notch groove And an inner cable for transmitting an operation by the lock handle to the positioning pin, the lock handle being surrounded by the frame-like main body and the frame-like main body provided, and a lock lever which is attracted to the frame-shaped body by squeezing together the frame-shaped body, by pulling the lock lever on the side of the frame-shaped body, the biasing force locating pins by the biasing member through the inner cable It is characterized in that it is pulled against and the positioning pin is separated from the notch groove.

A folding vehicle according to claim 8 is the folding vehicle according to claim 6 or 7 , wherein the seat is attached to the upper end portion and the lock handle is rotatably attached to the lower end portion, and is integrally connected with the front frame The seat handle is provided, and the lock handle is characterized by including a lock handle claw portion that restricts rotation of the rear frame relative to the seat post in the deployed state.

  A folding vehicle according to a ninth aspect of the present invention is the folding vehicle according to any one of the first to eighth aspects, wherein the handle shaft holder comprises a pair of side plates in parallel relation to each other, and a front frame between the pair of side plates And the front end of the first link lever, and the handle shaft holder and the first front end of the front frame and the front end of the first link lever respectively have the first rotation axis and the second rotation. It is characterized by being pivotally supported by a shaft.

  A folding vehicle according to a tenth aspect of the present invention is the folding vehicle according to any one of the first to ninth aspects, wherein at least a second front end of the rear frame is provided with a pair of frames parallel to each other The rear end portion of the front frame is inserted between the pair of frames, and the second front end portion of the rear frame and the rear end portion of the front frame are pivotally supported by the third rotation shaft.

  A folding vehicle according to an eleventh aspect of the present invention is the folding vehicle according to any one of the first to tenth aspects, wherein the second link lever includes a pair of levers in parallel with each other, and the front ends of the pair of levers The rear end of the first link lever is inserted therebetween, and the front end of the second link lever and the rear end of the first link lever are pivotally supported by the fourth rotation shaft, and the pair of levers of the second link lever The rear end of the second link lever and the second front end of the rear frame are supported by the fifth rotation shaft, with the second front end of the rear frame interposed between the rear ends. Do.

  A folding vehicle according to a twelfth aspect of the present invention is the folding vehicle according to any one of the first to eleventh aspects, wherein in the folded state, the third rotation shaft is positioned outward from the rotation shaft of the rear wheel It is characterized by

  In the folded vehicle according to the first aspect, the front end of the front frame and the rear end of the rear frame are brought close to each other in an inverted V shape by turning about the third rotation axis, and the first rotation axis is about the rotation axis. In order to turn and fold the rear end of the front frame and the handle shaft holder close to each other in a V shape, the entire width in the folded state is the front frame (the front frame of the present invention And the size can be effectively reduced.

  In the folded vehicle according to claim 2, the positioning pin provided at the first front end of the front frame is guided by the guide hole provided in the handle shaft holder according to the rotation of the front frame, and both ends of the guide hole By fitting in any one notch groove of the notch groove, the unfolded state and the folded state can be fixed.

  In the folded vehicle according to the third aspect, the guide hole is formed in an arc shape centering on the first rotation shaft, whereby the positioning pin provided at the first front end of the front frame is turned It becomes possible to guide smoothly according to.

  In the folded vehicle according to the fourth aspect, the notch groove is formed in the radial direction with respect to the arc-shaped guide hole, whereby any one of the positioning pins provided at the first front end of the front frame can be smoothly made. It becomes possible to fit in one notch groove.

In the folded vehicle according to the sixth aspect , it is possible to easily fit the positioning pin into the notch groove and to separate from the notch groove by the operation of the lock handle.

In the folded vehicle according to the fifth aspect , since the positioning pin is biased in the direction of the notch groove by the biasing member, it is possible to maintain the state in which the positioning pin is fitted in the notch groove.

In the folded vehicle according to claim 7, the positioning pin resists the biasing force of the biasing member through the inner cable by squeezing the lock lever with the frame-like main body and pulling the lock lever toward the frame-like main body. Since it is pulled, the positioning pin can be easily separated from the notch groove, and the front frame can be made pivotable.

  In the folded vehicle according to the eighth aspect, the lock handle that is rotatably attached to the lower end portion of the seat post includes the lock handle claw portion. The lock handle claws restrict rotation of the rear frame with respect to the seat post in the unfolded state. Since the seat post is integrally connected to the front frame, the rotation of the rear frame and the front frame is restricted, and in the unfolded (in use) state, the rear frame is folded even if an unintended force is applied to the rear frame from the front and rear direction It is possible to suppress the folding in the direction.

  In the folded vehicle according to claim 9, the first front end of the front frame and the front end of the first link lever are inserted between the pair of side plates of the handle shaft holder, and the first rotation shaft and the second rotation shaft, respectively. As a result, the strength and rigidity increase, and the twisting and bending are suppressed, and it becomes possible to expand and fold comfortably (smoothly).

  In the folded vehicle according to claim 10, the rear end of the front frame is inserted between a pair of frames in parallel with each other provided at least at the second front end of the rear frame, and pivotally supported by the third rotation shaft As a result, strength and rigidity are increased, and twisting and bending are suppressed, and it becomes possible to expand and fold comfortably (smoothly).

  In the folding vehicle according to claim 11, the second link lever is provided with a pair of levers in parallel with each other, and the rear end of the first link lever is sandwiched between the front ends of the pair of levers. The secondary front end is held between the rear ends of the pair of levers and supported by the fourth rotation shaft and the fifth rotation shaft, respectively, to increase strength and rigidity, and to suppress twisting and bending, It can be deployed and folded comfortably.

  In the folded vehicle according to claim 12, in the folded state, the rear frame itself is not locked by restricting rotation by positioning the third rotating shaft outward from the rotating shaft of the rear wheel. Since the wheel is biased in the direction to maintain the folded state, it is possible to prevent the rear wheel from spreading apart from the front wheel in the folded state.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view of the folding vehicle which made the folding vehicle which concerns on embodiment of this invention the (a) expansion | deployment (operation possible) state, and (b) folding state. It is a figure which shows each frame in the (a) expansion | deployment (operation possible) state in the folding mechanism which concerns on embodiment of this invention, and (b) a folding state, a link lever, and the state of a rotating shaft. It is the perspective view which looked at a folding type vehicle in a state where it was set to an unfolded (operable) state according to an embodiment of the present invention as viewed from slightly above. It is the perspective view which looked at the folding vehicle of the state which set the folding vehicle according to the embodiment of the present invention in the folding state from diagonally backward. It is a perspective view which shows the detail of the rear part (portion of a rear frame) of a folding vehicle. It is a perspective view which shows the detail of the front part (portion of a handle shaft holder) of a folding vehicle. It is a perspective view showing lock mechanism L1 concerning an embodiment of the present invention. It is a schematic diagram explaining lock mechanism L1 concerning an embodiment of the present invention. A figure explaining a procedure of folding a folding vehicle concerning an embodiment of the present invention (the 1). A figure explaining the procedure which folds the folding vehicle concerning the embodiment of the present invention (the 2). FIG. 8 is a view for explaining the procedure for folding the folding vehicle according to the embodiment of the present invention (part 3); A figure explaining the procedure which folds the folding vehicle concerning the embodiment of the present invention (the 4). It is a top view which shows the rear frame of the folding vehicle in a vehicle width expansion state. It is a top view which shows the rear frame of the folding vehicle in a vehicle width reduction state. It is sectional drawing which shows the cross section of the rear frame cut | disconnected except the 1st pivot axis in line AA of FIG. It is sectional drawing which shows the cross section of the rear frame cut except the 2nd pivot axis by line B-B of FIG. It is sectional drawing which shows the cross section of the rear frame cut except line | wire CC of FIG. 13 except the 3rd pivot axis. It is sectional drawing which shows the cross section of the rear frame cut | disconnected except the 1st lock pin by line DD of FIG.

Hereinafter, embodiments of the present invention will be described based on the drawings.
First, the basic configuration of a folding vehicle according to the present embodiment will be described with reference to FIGS. 1 to 6. The foldable vehicle 100 is provided with a handle shaft holder 3. The handle shaft holder 3 has an upper portion between a pair of side plates 3a, 3a formed in a curved shape in a side view, as shown in FIGS. The holder frame 3b is integrally connected to the lower part by the holder frame 3c.

  A handle frame 24 is attached to the front end portion of the handle shaft holder 3 so as to be rotatable in a substantially horizontal direction. A handle 25 is fixed at the upper end of the handle frame 24, and a wheel support frame 23 is fixed to the lower end of the handle frame 24. The front wheel 20 is rotatably supported by the wheel support frame 23. ing. Further, footlefts 19, 19 are attached below the pair of side plates 3a, 3a.

  The first link lever 4 is below the rear of the handle shaft holder 3 and the front frame 1 is below the first link lever 4. The front end and the first front end are the second rotation shaft 9 and the first rotation, respectively. It is pivotally supported with respect to the handle shaft holder 3 with the shaft 10 as an axial center. Here, the first front end portion is a portion of the front end portion of the front frame 1 which is located at the most front end. Further, a guide hole and a positioning groove 15 are provided at the rear of the handle shaft holder 3, and a positioning pin 16 provided at the first front end of the front frame 1 is engaged. Here, the first order front end portion is a portion of the front end portion of the front frame 1 which is located rearward of the first front end portion. The guide hole and the positioning groove 15 and the positioning pin 16 function as the lock mechanism L1. The lock mechanism L1 will be described later.

  A rear end portion of the front frame 1 and a second front end portion located at the front end of the rear frame 2 are rotatably connected by a third rotation shaft 13. As shown in FIG. 5, the rear frame 2 is provided with a pair of frames 2a and 2a at the front end, and the rear end of the front frame 1 is inserted between the pair of frames 2a and 2a. It is connected. Thus, by setting at least one of the two frames 2a and 2a of the rear frame 2 to be connected when connected by the rotation shaft, the strength and rigidity of the connected portion are increased, and bending or twisting that becomes an obstacle during rotation Thus, the front frame 1 and the rear frame 2 can be pivoted comfortably.

  As shown in FIG. 5, the rear frame 2 is also provided with a pair of frames 2b, 2b at the rear end, and a pair of rear wheel frames 29, 29 for rotatably supporting the rear wheels 21, 21, respectively. Are fixed by bolts to the frames 2b, 2b. Inline motors 18 are attached to the rear wheels 21 respectively, and can be driven by a motor drive control unit 30 attached to the lower surface of the rear frame 2.

  A seat post 27 is integrally connected to the rear end of the front frame 1. The upper portion of the seat post 27 is cylindrical, and a seat support frame 26 in which the seat 6 is fixed at the upper end portion is inserted into the cylindrical portion of the seat post 27 so as to be vertically movable. The seat support frame 26 is fixed and held by a seat lock lever 22 provided at the upper end of the seat post 27. When changing the height of the seat 6, the seat lock lever 22 is operated to move the seat support frame 26 up and down, and then the height of the seat 6 is adjusted, and the seat lock lever 22 is operated to operate the seat support frame Hold 26 firmly. The configuration and operation of the seat lock lever 22 may be any known configuration and operation, and thus the details thereof will be omitted.

  As described above, the front end of the first link lever 4 is rotatably supported at the rear of the handle shaft holder 3 with respect to the handle shaft holder 3 with the second rotation shaft 9 as an axial center. The rear end portion of the first link lever 4 is rotatably connected with the front end portion of the second link lever 5 and the fourth rotary shaft 11 as an axis, and the rear end portion of the second link lever 5 is Of the front end portions, the second front end portion positioned behind the second front end portion and the fifth rotation shaft 12 are rotatably connected with each other as an axial center. In the present embodiment, the second link lever includes a pair of levers 5 in order to give high strength and rigidity to each portion of the fourth rotation shaft 11 and the fifth rotation shaft 12 as in the third rotation shaft 13 described above. The structure of 5 is adopted. The fourth rotating shaft 11 and the fifth rotating shaft are interposed between the rear end of the first link lever 4 and the second front end of the rear frame 2 by the pair of levers 5 of the second link lever. By connecting 12 as an axial center, the strength and rigidity of each connection portion are enhanced, and similarly to the third rotating shaft 13, bending or twisting that becomes an obstacle at the time of rotation is suppressed, and the rear frame 2, the first The link lever 4 and the second link lever 5 can be pivoted comfortably.

  Although not described above, the second rotary shaft 9 at the front end of the first link lever 4 and the first rotary shaft 10 at the first front end of the front frame 1 Since the front end and the first front end of the front frame 1 are inserted between the pair of side plates 3 a of the handle shaft holder 3 and supported by the second rotation shaft 9 and the first rotation shaft 10, Similar to the third, fourth and fifth rotation shafts 13, 11 and 12, the strength and the rigidity can be enhanced and the rotation can be performed comfortably. That is, since all the pivotably connected parts constituting the folding mechanism of the folding vehicle according to the present embodiment have high strength and rigidity as described above, they are comfortably (smoothly) It is possible to switch between the unfolded state and the folded state, and is excellent in durability.

  As described above, the present embodiment can be realized by the front frame 1, the rear frame 2, the first link lever 4, and the second link lever 5 being rotatably coupled to each other by the five rotation shafts. The folding vehicle of the form can be switched easily and comfortably between the unfolded (operable) state and the folded state.

  Next, the lock mechanism L1 according to the present embodiment will be described based on FIG. 7 and FIG. The operation of locking / unlocking by the lock mechanism L1 is the same in the unfolded (operable) state and the folded state, so the details of the unfolded (operable) state will be described here, and the folded state The description is omitted.

  FIG. 7 is a perspective view showing the lock mechanism L1 in the unfolded (operable) state. Then, FIG. 8 is a view schematically showing a locked state by the lock mechanism L1 in the unfolded (operable) state. The side plates 3a, 3a constituting the handle shaft holder 3 are on both sides of the front frame 1, and the guide holes and the positioning grooves 15, 15 formed in the lower portion thereof are also in the respective side plates 3a. In order to do this, as shown in FIG. 8, the explanation will be given based on one side plate 3a.

  As described above, the first front end of the front frame 1 is rotatably supported by the first rotation shaft 10 with respect to the handle shaft holder 3. In the present embodiment, the front frame 1 adopts a hollow square-shaped rectangular pipe so that the inner cable 33 and the outer cable 35 can be placed inside.

  In the locked state, the positioning pin 16 at the primary front end of the front frame 1 and movable in the front-rear direction is an arc-shaped guide hole 15c and a guide hole 15c formed in the side plate 3a of the handle shaft holder 3. Among the guide holes and positioning grooves 15 formed on both ends and including two U-shaped notch grooves 15a (upper notch grooves) and 15b (lower notch grooves), the lower notch grooves 15b are fitted. It is united. The positioning pin 16 is urged in the direction of the first rotation shaft 10 by the tension spring 31. The positioning pin 16 is fitted in the lower notch groove 15b by the biasing force of the tension spring 31, and is held at this position.

  An inner cable 33 is connected to the positioning pin 16 on the opposite side to the first rotation shaft 10. The inner cable 33 extends rearward along the front frame 1 and is connected to an outer cable fixing pin 32 disposed on the front side of the central portion of the front frame 1.

The outer cable fixing pin 32 is inserted into a through hole opened forward from the central portion of the front frame 1, and the inner cable 33 is further extended rearward through the outer cable 35 and the lock handle 7 The lock lever 8 is connected to the front end of the lock lever 8. Thus, by providing the outer cable fixing pin 32 and the outer cable 35, the inner cable 33 can be moved smoothly.
The outer cable 35 is disposed outside the opening formed at the rear end of the front frame 1 and extends to the front of the lock handle 7.

  In such a state, when the lock lever 8 of the lock handle 7 is grasped and the lock lever 8 is moved backward, the positioning pin 16 is urged to the urging force of the tension spring 31 via the outer cable fixing pin 32 and the inner cable 33. It moves backward along the lower notch groove 15b to come off from the lower notch groove 15b (described later in FIG. 9). Thereby, the locked state of the front frame 1 is released, and the folding vehicle 100 becomes rotatable.

  If the lock lever 8 of the lock handle 7 is released to make the lock state, the positioning pin 16 is biased and moved in the direction of the first rotation shaft 10 (forward) by the biasing force of the tension spring 31. The front frame 1 is locked by being fitted into the notch groove 15b (see FIG. 8).

  Although the method of locking / unlocking in the unfolded (operable) state has been described above, in the folded state not shown, the front frame 1 is pivoted in the direction approaching the handle shaft holder 3 to position the positioning pin 16 The front frame 1 is locked in the folded state by being fitted into the upper notch groove 15a of the grooves 15, and the folded state is held.

  As described above, according to the lock mechanism L1 according to the present embodiment, the locking / unlocking can be simplified simply by grasping or releasing the lock lever 8 of the lock handle 7.

Next, a procedure for folding the folding vehicle according to the embodiment of the present invention will be described with reference to FIGS. 8 to 12.
FIG. 8 is a view for explaining the positional relationship of various frames, link levers, lock handles, and the like in the unfolded (operable) state of the folded vehicle according to the embodiment of the present invention.

  In the unfolded state, the positioning pin 16 is fitted in the lower notch groove 15b of the positioning groove 15, and is held (locked) in the unfolded state of the folding vehicle. The lock handle 7 is pivotally supported by a sixth rotation shaft 17 with respect to a seat post 27 integrally connected to the rear end portion of the front frame 1. In the unfolded (operable) state, the lock handle 7 is pivoted to the rear frame 2 side and disposed close to the rear frame 2. When the lock handle 7 is disposed at this position, as shown in FIG. 9, the lock handle claws 14 continuously provided below the lock handle 7 are engaged with the fifth rotation shaft 12. Since the lock handle 7 is integrally connected to the front frame 1 via the seat post 27, the fifth rotation shaft 12 is also fixed to the front frame 1, and the rear connected to the fifth rotation shaft 12 The frame 2 is restrained from pivoting with respect to the front frame 1 about the third rotation axis 13. Therefore, even if a force caused by a collision or the like acts in the front-rear direction, it is possible to suppress an unexpected situation in which the vehicle is deformed in a folded state during operation. The folding vehicle 100 can maintain a stable deployed (drivable) state, and can realize stable driving.

  When switching from this state to the folded state, first, as shown in FIG. 9, the lock lever 8 provided in the lock handle 7 is grasped and the lock lever 8 is pulled rearward. As a result, the inner cable 33 connected to the lock lever 8 is pulled backward, the positioning pin 16 is separated from the lower notch groove 15b, the locked state of the front frame 1 is released, and the front frame 1 is a handle shaft It becomes rotatable with respect to the holder 3.

  Next, as shown in FIG. 10, in a state where the lock lever 8 is gripped, the lock handle 7 is pivoted upward away from the rear frame 2 with the sixth rotation shaft 17 as the rotation center. When the lock handle 7 pivots upward, the lock handle claws 14 continuously provided below the lock handle 7 also pivot and move away from the fifth rotation shaft 12 to form the fifth rotation shaft 12 and the fifth rotation shaft. The rear frame 2 connected to 12 can rotate with respect to the front frame 1 about the third rotation axis 13. Thereby, the folding vehicle 100 can be folded.

  When the lock handle 7 is brought close to the handle frame 24, the handle 25 and the like in a state where the lock lever 8 is grasped, the front frame 1 is coupled with the weight of the folded vehicle 100 via the seat post 27 as shown in FIG. The rear end portion of the wheel pivots in the direction approaching the handle shaft holder 3. In this state, the positioning pins 16 of the front frame 1 are located in the guide holes 15c connecting the upper and lower notch grooves 15a and 15b, and the positioning pins 16 are lower notch grooves with the rotation of the front frame 1. It moves through the guide hole 15c from the position 15b to the position of the upper notch groove 15a. As shown in FIG. 11, when the front frame 1 rotates, the rear frame 2, the first link lever 4, and the second link lever 5 are also rotated in the direction approaching the handle shaft holder 3 by the rotation shafts connected thereto. Move and move.

  As shown in FIG. 12, when it is further rotated, the positioning pin 16 of the front frame 1 abuts on the end surface of the upper side of the guiding hole 15 c on the side of the notch groove 15 a, and the rotation of the front frame 1 is suppressed. When the lock lever 8 is released in a state in which the rotation of the front frame 1 is suppressed, the positioning pin 16 of the front frame 1 is fitted in the upper notch groove 15a. Since the positioning pin 16 is held at this position by the biasing force of the tension spring 31 as described above, the front frame 1 is locked in this folded position. The rotation of the front frame 1 causes the rear frame 2, the first link lever 4 and the second link lever 5 to rotate further in the direction closer to the handle shaft holder 3 by the rotation shafts connected to each other. The tatami mat vehicle 100 is folded as shown in FIG. 1 (b), FIG. 4 and FIG. 12, and this state is held by the lock mechanism L1 described above.

  When the folded vehicle 100 is to be switched from the folded state to the unfolded (operable) state, the procedure is performed in the reverse order. That is, when the lock lever 8 is grasped and the lock lever 8 is pulled, the lock of the front frame 1 is released. When the lock handle is pushed downward together with the handle 25 and the handle frame 24 while holding the lock lever 8, the front frame 1 is pivoted away from the handle shaft holder 3, and the other frames The link lever also pivots, and the folding vehicle 100 is in the unfolded state. When the lock lever 8 is released, the front frame 1 is locked and the unfolded (operable) state is maintained.

  As described above, in the present embodiment, the folding operation and the unfolding operation of the folding vehicle 100 can be performed by the lock handle 7 rotatably fixed to the seat post 27 integrally connected to the front frame 1 It is. Since the lock handle 7 is at a position away from the first rotation axis 10 serving as the axis of rotation of the front frame 1, a large moment can be obtained for the rotation, and even if it is a relatively weak force, it is folded Enables manipulation and deployment operations. Therefore, a person with relatively weak strength, such as an elderly person or a woman, can easily operate the folding and unfolding of the folding vehicle 100 according to the present embodiment.

  Further, the inline motors 18, 18 are disposed on the rear wheels 21, 21, and the motor drive control unit 30 is disposed on the rear surface of the rear frame 2, so that the center of gravity moves downward when erected in the folded state. The folding vehicle 100 can be stably maintained in the folded state.

  Furthermore, since the third rotation shaft 13 is positioned outward from the rotation shafts of the rear wheels 21 and 21 in the folded state, the rear frame 2 itself is folded even if there is no lock for restricting rotation. In the tatami mat state, the rear wheels 21 and 21 are urged toward the front wheel 20 so that the folded state can be maintained. In the folded state, it is possible to prevent the rear wheels 21 and 21 from spreading apart from the front wheel 20.

When moving the folding vehicle 100 in the folded state, it is preferable to hold the lock handle 7 by hand and pull it forward to pull it. Thus, the folded vehicle 100 is supported by the rear wheels 21 in a state where the front wheels 20 are separated from the ground. The rearward rotation of the rear wheel enables the user to grip and move the lock handle 7 in a manner to carry the carry bag.
Therefore, it moves to various places and the folding vehicle 100 becomes available.

Here, the tension spring 31 is an example of a biasing member, and the upper notch groove 15a and the lower notch groove 15b are an example of a notch groove .

  Next, vehicle width switching in the unfolded (operable) state of the folded vehicle according to the embodiment of the present invention will be described with reference to FIGS. 13 to 18. The foldable vehicle 100 can be switched to two stages of the vehicle width expansion state shown in FIG. 13 or the vehicle width reduction state shown in FIG. For that purpose, the rear frame 2 is configured by a link structure composed of a plurality of arm members as shown in FIGS. 13 and 14. Furthermore, the link structure is held and reinforced by the plurality of lock pins and the plurality of stay members.

  The rear frame 2 has a pair of frames 2C and 2C. The pair of frames 2C, 2C has a first arm member 101, a second arm member 102, and a third arm member 103. The first arm member 101 is made of a square pipe material. The second arm member 102 and the third arm member 103 are made of channel material. The inline motor 18 and the rear wheel 21 are attached to the third arm member 103.

  The rear end portion of the first arm member 101 is joined to the front end portion of the second arm member 102 via a first pivot axis P1. In the bonding, as shown in FIG. 15, the first pivot axis P1 is behind the first arm member 101 with the rear end of the first arm member 101 inserted into the front end of the second arm member 102. The end portion and the front end portion of the second arm member 102 are axially mounted. Thus, the second arm member 102 is rotatably attached to the first arm member 101 via the first pivot axis P1. The first pivot axis P1 is composed of a bolt B1 and a nut N1. Moreover, the code | symbol H3 is the 3rd fixing hole H3 mentioned later.

  The rear end portion of the second arm member 102 is joined to the front end portion of the third arm member 103 via a second pivot axis P2. In the bonding, as shown in FIG. 16, the second pivot axis P2 is behind the second arm member 102 in a state where the rear end of the second arm member 102 is inserted into the front end of the third arm member 103. The end portion and the front end portion of the third arm member 103 are axially mounted. Thus, the third arm member 103 is rotatably attached to the second arm member 102 via the second pivot axis P2. The second pivot axis P2 is configured by a bolt B2, a nut N2, and the like.

  Between the pair of frames 2C, 2C, the upper end portions of the first arm members 101, 101 are joined via the third rotation shaft 13, and the rear end portions of the first arm members 101, 101 are the fourth arm member 104. Bonded through. Thereby, the first arm members 101 and 101 and the fourth arm member 104 are fixed. The fourth arm member 104 is made of a square pipe in the same manner as the first arm member 101.

  Further, between the pair of frames 2C, 2C, both ends of the fifth arm member 105 are joined to the rear end of the second arm member 102 and the front end of the third arm member 103 via the second pivot axis P2. Be done. In the joining, as shown in FIG. 16, one end of the fifth arm member 105 is inserted into the rear end of the second arm member 102, and the rear end of the second arm member 102 is the third arm member 103. The second pivot axis P2 is axially mounted on one end of the fifth arm member 105, the rear end of the second arm member 102, and the front end of the third arm member 103 in a state of being inserted into the front end of . Thus, the third arm member 103 and the fifth arm member 105 are rotatably attached to the second arm member 102 via the second pivot axis P2.

  The fifth arm member 105 is made of a channel material and includes the sixth arm member 106 and the seventh arm portion 107. The sixth arm member 106 and the seventh arm portion 107 are joined at the center between the pair of frames 2C, 2C via the third pivot axis P3. Furthermore, the first stay member 108 extends along the rear side (the lower side in the drawing) of the sixth arm member 106 and the rear side (the lower side in the drawing) of the seventh arm portion 107. It is attached to the arm portion 107 via the third pivot axis P3. The first stay member 108 has an equal length on the left and right of the third pivot axis P3 and is made of a channel material.

  On the third pivot axis P3, as shown in FIG. 17, one end of the sixth arm member 106 is inserted into one end of the seventh arm 107, and one end of the seventh arm 107 is the first stay member. It is in the state of being interpolated at 108. That is, the third pivot axis P3 is axially mounted on one end of the sixth arm member 106, one end of the seventh arm portion 107, and the central portion of the first stay member 108 in such an inserted state. Thereby, the sixth arm member 106, the seventh arm portion 107, and the first stay member 108 are rotatably attached to each other via the third pivot axis P3. Furthermore, at one end portion of the seventh arm portion 107, the side surface on the first stay member 108 side is cut out, and a space is provided between the first stay member 108 and the side surface. Thus, when the first stay member 108 is moved to the left in the drawing, the sixth arm member 106 and / or the seventh arm portion 107 is not caught. The third pivot axis P3 is composed of a bolt B3 and a nut N3.

  Between the third pivot axis P3 and the second pivot axis P2, the front end portion of the second stay member 109 moves the fourth pivot axis P4 to the fifth arm member 105 (the sixth arm member 106 or the seventh arm portion 107). Bonded through. Thereby, the second stay member 109 is rotatably attached to the fifth arm member 105 (the sixth arm member 106 or the seventh arm portion 107) via the fourth pivot axis P4. Although not shown, the fourth pivot axis P4 is formed of a bolt, a nut or the like in the same manner as the pivot axes P1, P2 and P3.

  At the rear end of the first arm member 101, a first fixing hole H1 is provided. A second fixing hole H2 is provided through the front end of the second arm member 102. Furthermore, at the front end portion of the second arm member 102, a third fixing hole H3 is provided through a tip end portion provided on the fourth arm member 104 side. Fourth fixing holes H <b> 4 are provided at both ends of the fourth arm member 104. The first fixing hole H1, the second fixing hole H2, the third fixing hole H3, and the fourth fixing hole H4 are located on the same circle centered on the first pivot axis P1.

  A fifth fixing hole H5 is provided in a longitudinally central portion of the third arm member 103. At the rear end of the third arm member 103, a sixth fixing hole H6 is provided. Furthermore, at the rear end of the third arm member 103, a seventh fixing hole H7 is formed through the end portion provided on the inline motor 18 side. An eighth fixing hole H8 is formed through the fifth arm member 105 (the sixth arm member 106 and the seventh arm portion 107) in the vicinity of the third pivot axis P3 with respect to the fourth pivot axis P4.

  Although not shown, fixing holes for the first stay member are provided at both ends of the first stay member 108. Furthermore, a fixing hole for the second stay member is formed through the rear end of the second stay member 109.

  The first lock pin F1, the second lock pin F2, and the third lock pin F3 are used to maintain the vehicle width expansion state of FIG. 13 or the vehicle width reduction state of FIG.

  In the vehicle width expansion state of FIG. 13, the first lock pin F1 is inserted into the first fixing hole H1 of the first arm member 101 and the second fixing hole H2 of the second arm member 102. The second lock pin F2 is inserted into the fixing hole for the first stay member of the first stay member 108 and the eighth fixing hole H8 of the fifth arm member 105 (the sixth arm member 106 and the seventh arm portion 107). The third lock pin F3 is inserted into the fifth fixing hole H5 of the third arm member 103 and the second stay fixing hole of the second stay member 109.

  As shown in FIG. 18, the first lock pin F1 is composed of a shaft portion FB1 and a ball lock portion FB2. The ball lock portion FB2 is provided at the tip of the shaft portion FB1 and can be easily taken in and out of the shaft portion FB1. In the first lock pin F1, after the shaft portion FB1 is inserted into the first fixed hole H1 of the first arm member 101 and the second fixed hole H2 of the second arm member 102, the ball lock portion FB2 is inserted from the shaft portion FB1. It is projected. Thereby, the first lock pin F1 fixes the first arm member 101 (the fourth arm member 104 fixed to the first arm member 101) and the second arm member 102 in the vehicle width enlarged state.

  Although not shown, such a fixing structure is the same for the second lock pin F2 and the third lock pin F3. The second lock pin F2 fixes the first stay member 108 and the fifth arm member 105 (the sixth arm member 106 and the seventh arm portion 107) in the vehicle width enlarged state. The third lock pin F3 fixes the third arm member 103 and the second stay member 109 in the vehicle width expanded state.

  Furthermore, the second lock pin F2 and the third lock pin F3 secure a large rigidity in the vehicle width expansion state by fixing the first stay member 108 and the second stay member 109 in the vehicle width expansion state.

  In the vehicle width reduction state of FIG. 14, the first lock pin F1 is inserted into the third fixing hole H3 of the second arm member 102 and the fourth fixing hole H4 of the fourth arm member 104. The second lock pin F 2 is inserted into the first stay member fixing hole of the first stay member 108 and the seventh fixing hole H 7 of the third arm member 103. The third lock pin F3 is inserted into a sixth fixing hole H6 of the third arm member 103 and a fixing hole for the second stay member of the second stay member 109.

  Thereby, the first lock pin F1 fixes the fourth arm member 104 (the first arm member 101 fixed to the fourth arm member 104) and the second arm member 102 in the vehicle width reduced state. The second lock pin F2 fixes the first stay member 108 and the third arm member 103 in the vehicle width reduced state. Furthermore, the second lock pin F2 fixes the fifth arm member 105 (the sixth arm member 106 and the seventh arm portion 107) in the vehicle width reduced state via the second pivot axis P2 and the third pivot axis P3. The third lock pin F3 fixes the second stay member 109 in the reduced vehicle width state.

  Furthermore, the second lock pin F2 and the third lock pin F3 secure a large rigidity in the reduced vehicle width state by fixing the first stay member 108 and the second stay member 109 in the reduced vehicle width state.

  In order to switch from the vehicle width expansion state of FIG. 13 to the vehicle width reduction state of FIG. 14, first, the first lock pin F1, the second lock pin F2, and the third lock pin F3 are pulled out. Subsequently, the fifth arm member 105 (the sixth arm member 106 and the seventh arm portion 107) has the third pivot axis P3 as an apex by the first stay member 108 being moved backward (downward in the drawing). The figure is V-shaped. Further, the third arm members 103, 103 are moved to the inline motor 18 side, whereby the distance between the third arm members 103, 103 becomes narrow, and the rear end portions of the second arm members 102, 102 The distance becomes narrower.

  Then, the first stay member fixing hole of the first stay member 108 and the seventh fixing hole H7 of the third arm member 103 are superimposed on each other, and the second lock pin F2 is the first state of the first stay member 108. It is inserted into the stay member fixing hole and the seventh fixing hole H7 of the third arm member 103. Further, the third fixing hole H3 of the second arm member 102 and the fourth fixing hole H4 of the fourth arm member 104 are overlapped, and the first lock pin F1 is the third fixing hole of the second arm member 102. It is inserted into the fourth fixing hole H4 of H3 and the fourth arm member 104. Further, the sixth fixing hole H6 of the third arm member 103 and the fixing hole for the second stay member of the second stay member 109 are superimposed on each other, and the third lock pin F3 is inserted into the sixth lock hole F6 of the third arm member 103. It is inserted into the fixing hole H 6 and the fixing hole for the second stay member of the second stay member 109.

  As a result, the vehicle width reduction state of FIG. 13 is switched to the vehicle width reduction state of FIG. 14, and the vehicle width reduction state of FIG. 14 is held and reinforced.

  On the other hand, in order to switch from the vehicle width reduction state of FIG. 14 to the vehicle width expansion state of FIG. 13, first, the first lock pin F1, the second lock pin F2 and the third lock pin F3 are pulled out. Subsequently, as the first stay member 108 is moved forward (upward in the figure), the fifth arm member 105 (the sixth arm member 106 and the seventh arm portion 107) has the left-right direction as the longitudinal direction. At the same time, the third pivot axis P3 is made linear with the longitudinal center thereof. Furthermore, by moving the third arm members 103 and 103 toward the rear wheel 21, the distance between the third arm members 103 and 103 increases, and the rear end portions of the second arm members 102 and 102 The distance becomes wider.

  Then, the first stay member fixing hole of the first stay member 108 and the eighth fixing hole H8 of the fifth arm member 105 (the sixth arm member 106 and the seventh arm portion 107) are superimposed on each other, The lock pin F2 is inserted into the fixing hole for the first stay member of the first stay member 108 and the eighth fixing hole H8 of the fifth arm member 105 (the sixth arm member 106 and the seventh arm portion 107). Further, the first fixing hole H1 of the first arm member 101 and the second fixing hole H2 of the second arm member 102 are superimposed on each other, and the first lock pin F1 is a first fixing hole of the first arm member 101. H1 and the second fixing hole H2 of the second arm member 102 are inserted. Furthermore, the fifth fixing hole H5 of the third arm member 103 and the fixing hole for the second stay member of the second stay member 109 are superimposed on each other, and the third lock pin F3 is inserted into the fifth lock hole F5 of the third arm member 103. The fixing holes H <b> 5 and the fixing holes for the second stay member of the second stay member 109 are inserted.

  Thereby, the vehicle width reduction state of FIG. 14 is switched to the vehicle width expansion state of FIG. 13, and the vehicle width expansion state of FIG. 13 is held and reinforced.

In this manner, the folded vehicle 100 can be switched to the vehicle width expansion state of FIG. 13 or the vehicle width reduction state of FIG. 14, so that the vehicle width suitable for the use situation (that is, the distance between the pair of rear wheels 21 and 21) Change to).

  For example, although there are flat spaces in urban areas and event venues, many pedestrians are crowded, so it is necessary to narrow the vehicle width (that is, the distance between the pair of rear wheels 21 and 21) as much as possible. The case is assumed. In such a case, the folded vehicle 100 is switched to the vehicle width reduction state shown in FIG. 14 so that the vehicle width (that is, the distance between the pair of rear wheels 21 and 21) is narrowed to the maximum. I can travel.

  On the other hand, although there are few pedestrians, etc. in the suburbs, it is assumed that it is necessary to widen the vehicle width (that is, the distance between the pair of rear wheels 21 and 21) as much as possible. . In such a case, the folded vehicle 100 is switched to the vehicle width expansion state shown in FIG. 13 to maximize the vehicle width (that is, the distance between the pair of rear wheels 21 and 21). I can travel.

  Therefore, since the width of the vehicle (that is, the distance between the pair of rear wheels 21 and 21) can be changed in accordance with the use environment, the traveling conditions, and the like, the foldable vehicle 100 is highly convenient mobility.

  In the folding vehicle 100, when the vehicle width (that is, the distance between the pair of rear wheels 21 and 21) is changed, insertion and removal of the lock pins F1, F2 and F3, and the front of the first stay member 108 and the like The shape of the link structure of the rear frame 2 is easily changed like a pantograph by performing movement or the like of the upper side of the drawing or the rear (lower side of the drawing). Therefore, the folding vehicle 100 can easily change the width of the vehicle (that is, the distance between the pair of rear wheels 21 and 21) in a short time.

  As mentioned above, although the embodiment of the present invention has been described in detail, these are merely examples, and the present invention is not construed as being limited in any way by the specific description in the embodiment, and those skilled in the art The present invention can be implemented in an embodiment to which various changes, modifications, improvements, etc. are added based on knowledge, and any such embodiment is within the scope of the present invention unless it deviates from the spirit of the present invention. It should be understood that it is included in

  Further, in the present embodiment, the brake levers provided on both sides of the handle 25 and the wiring between the brake lever and the brake, the battery for driving the motor, the wiring related to the power supply, etc. are omitted. At the time of implementation, they may be set appropriately.

  Moreover, in the said embodiment, although two are provided with the upper notch groove 15a and the lower notch groove 15b as a notch groove, a notch groove is not limited to two, but three or more are provided May be Since locking is possible at various angles, for example, if it is held open compared to the folded state of the present embodiment, the distance between the front wheel and the rear wheel is increased, and the standing state is maintained more stably, and standing up It is safe to leave it in the state.

  In the above embodiment, one front wheel is used. However, two or more front wheels may be provided, and the number of rear wheels is not limited to two, and may be three or more. By increasing the number, more stable operation becomes possible.

  Further, in the above embodiment, the lock / unlock is performed by the lock lever 8 of the lock handle 7 connected to the seat post 27. However, the present invention is not limited to this.

1 · · · Front frame 2 · · Rear frame 3 · · Handle shaft holder 4 · · First link lever 5, 5 · · Second link lever 6 · · · Seat 7 · Lock handle 8 · · Lock lever 9 · · · 2 rotary shaft 10 · · first rotary shaft 11 · · fourth rotary shaft 12 · · fifth rotary shaft 13 · · third rotary shaft 14 · lock handle claw portion 15 · · · guiding hole and positioning groove 16 · · · · Positioning pin 17 · · Sixth rotation shaft 18 · 18 · Inline motor 19 · 19 · Foot left 20 · · Front wheel 21, 21 · · Rear wheel 22 · · Seat lock lever 23 · · Front wheel support frame 24 · · · Handle frame 25 ··· Handle 26 · · · Seat support frame 27 · · · Seat post 29, 29 · · · Rear wheel frame 30 · · Motor drive control unit 31 · · Tension spring 32 · · · Tar cable fixing pin 33 ... inner cable 35 ... outer cable 100 ... folding vehicle

Claims (12)

A foldable vehicle capable of switching between a deployable state capable of being carried and a folded state for storage and conveyance,
A handle frame having a handle attached to the upper end and a front wheel attached to the lower end;
A handle shaft holder rotatably supporting the handle frame;
A front frame pivotally supported relative to the handle shaft holder by a first front end portion pivotally supported on the handle shaft holder by a first rotation shaft;
A front end portion is pivotally supported by the handle shaft holder and a second rotation shaft above the first rotation shaft, and a first link lever that is rotatable relative to the handle shaft holder;
A rear frame having a rear wheel attached to the rear side, a second front end portion pivotally supported by a rear end portion of the front frame and a third rotation shaft, and rotatable relative to the front frame;
The front end portion is pivotally supported by the rear end portion of the first link lever and the fourth rotation shaft, and the rear end portion is formed by the second front end portion rearward of the second front end portion of the rear frame and the fifth rotation shaft A second link lever pivotally supported relative to the first link lever and the rear frame;
The third frame is rotated about an axis to move the front end of the front frame and the rear end of the rear frame in an inverted V shape, and the first frame is rotated about an axis to rotate the front frame A folded vehicle is characterized in that the rear end portion of the handle and the handle shaft holder are brought close to each other in a V-shape. The front frame is provided with a positioning pin at a first primary front end behind the first front end.
The handle shaft holder has a guide hole through which the positioning pin is guided in response to rotation of the front frame with respect to the handle shaft holder.
The folding vehicle according to claim 1, further comprising: a notch groove at an end portion of the guide hole, in which the positioning pin is fitted in each of a deployed state and a folded state.   The said guide hole is formed in circular arc shape centering on the said 1st rotating shaft, The foldable vehicle of Claim 2 characterized by the above-mentioned.   The said notch groove is radially formed with respect to the said circular arc-like guide hole, The folding vehicle of Claim 3 characterized by the above-mentioned. The folding vehicle according to any one of claims 2 to 4 , further comprising a biasing member that biases the positioning pin in the direction of the notch groove. A lock handle that operates the positioning pin in engagement with the notch groove and away from the notch groove;
The inner cable which transmits operation by the said lock handle to the said positioning pin is provided, The folding vehicle in any one of the Claims 2 thru | or 5 characterized by the above-mentioned. A biasing member for biasing the positioning pin in the direction of the notch groove;
A lock handle that operates the positioning pin in engagement with the notch groove and away from the notch groove;
And an inner cable for transmitting the operation by the lock handle to the positioning pin,
The lock handle is
Frame-like body,
And a lock lever which is provided so as to be surrounded by the frame-like main body, and is pulled toward the frame-like main body by squeezing together with the frame-like main body ;
By pulling the lock lever toward the frame-like main body , the positioning pin is pulled against the biasing force of the biasing member via the inner cable, and the positioning pin separates from the notch groove. The folding vehicle according to any one of claims 2 to 4 , characterized by The seat is attached to the upper end portion and the lock handle is rotatably attached to the lower end portion, and the seat handle is integrally coupled to the front frame,
The foldable vehicle according to claim 6 or 7 , wherein the lock handle includes a lock handle claw portion that restricts rotation of the rear frame with respect to the seatpost in a deployed state. The handle shaft holder comprises a pair of side plates in parallel relation to each other,
Inserting the first front end of the front frame and the front end of the first link lever between the pair of side plates;
The handle shaft holder, and the first front end of the front frame and the front end of the first link lever are supported by the first rotation shaft and the second rotation shaft, respectively. The folded vehicle according to any one of 1 to 8. At least the second foremost end of the rear frame comprises a pair of frames in parallel relationship with one another,
Inserting the rear end of the front frame between the pair of frames;
The folding vehicle according to any one of claims 1 to 9, wherein a second front end of the rear frame and a rear end of the front frame are supported by the third rotation shaft. . The second link lever comprises a pair of levers in parallel relation to each other,
Inserting the rear end of the first link lever between the front ends of the pair of levers;
The front end of the second link lever and the rear end of the first link lever are pivotally supported by the fourth rotation shaft,
The second front end of the rear frame is interposed between the rear ends of the pair of levers of the second link lever,
The fold according to any one of claims 1 to 10, wherein a rear end portion of the second link lever and a secondary front end portion of the rear frame are pivotally supported by the fifth rotation shaft. Tatami vehicles.   The folded vehicle according to any one of claims 1 to 11, wherein, in the folded state, the third rotation shaft is positioned outward from the rotation shaft of the rear wheel.

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