JP2016164022A - Folded type vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folded type vehicle which securely fastens a front frame to a main frame.SOLUTION: A short side part 11B of a main frame of a vehicle is connected to a guide part 13, to which a front frame is attached, through a connection part 12. A guide groove 13A which guides a fitting part 57 of the connection part 12 in a vehicle vertical direction is provided in the guide part 13. A notch part 41B, in which the fitting part 57 is fitted, is formed at a lower end part of the guide groove 13A. When a holding part 63 of a lever part is rotated in a state where the fitting part 57 is fitted in the notch part 41B, the holding part 63 is fastened by screw parts and the connection part 12 and the guide part 13 are fixed to each other.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a folding vehicle capable of switching states such as a folded state and a driving state, and more particularly to a technique for maintaining or switching the state.

  2. Description of the Related Art Conventionally, various foldable vehicles that can be switched between a driving state in which a user drives and a state in which the user is folded to carry are proposed (for example, Patent Document 1). A kick skater (an example of a foldable vehicle) disclosed in Patent Document 1 includes a front frame to which a front wheel is attached, and a main frame that connects the front frame and the rear wheel. The connecting rod of the front frame is rotatably attached to the connecting base of the main frame. A shaft member is inserted through the connecting rod and the connecting base. A lock lever for fixing the position of the shaft member is provided at one end in the axial direction of the shaft member.

  The lock lever is formed with an arc portion curved at a predetermined angle, and an eccentric shaft is provided at a position deviated from the center of curvature of the arc portion. The lock lever is rotated in a predetermined direction and rotated around the eccentric shaft, so that the distance between the arc portion and the connection base gradually decreases, and the position of the shaft member is fixed while the arc portion tightens the connection base. To fix. By fixing the shaft member to the connection base, the connection rod inserted through the shaft member is also fixed to the connection base.

  A limit ball into which the arc portion of the lock lever is fitted is formed on the connection base. A stereotaxic cover for holding the position of the arc portion is provided between the arc portion and the limit ball.

Utility Model Registration No. 3075243

  In the folding vehicle described above, the relative position between the front frame and the main frame is fixed by the tightening force of the lock lever. However, the lock lever requires a stereo cover to hold its position because the arc rotates around the eccentric shaft, and the front frame is securely fastened to the main frame when the stereo cover is deteriorated. There was a risk of not being done.

  The technology disclosed in the present application has been proposed in view of the above problems. An object of the present invention is to provide a foldable vehicle that can more reliably fasten a front frame to a main frame.

  A foldable vehicle according to one aspect of the present invention includes a front frame to which a front wheel is attached, a main frame to which a rear wheel is attached and a connecting portion for connecting to the front frame, and a main frame attached to the front frame. A guide portion provided with a guide groove for guiding the connecting portion between the first position and the second position, and the guide portion has a notch portion provided at the first position of the guide groove. The connecting portion includes a shaft portion provided with a fitting portion for fitting into the notch portion, and a lever portion provided so as to be rotatable about the axial direction of the shaft portion. By rotating the lever portion in the first direction, the relative movement between the connecting portion and the guide portion is suppressed, and by rotating the lever portion in the second direction opposite to the first direction, Enables relative movement with the guide part, The rear part of the main frame is moved from the first position to the second position along the guide groove by removing the fitting part fitted in the notch part in a state in which the pair can be moved. It is folded as it moves in the direction close to

  In the folding vehicle, the main frame is connected to each other at the front frame and the connecting portion. The front frame includes a guide portion provided with a guide groove that guides the connecting portion of the main frame from the first position to a second position different from the first position. For this reason, the relative position and angle of the main frame and the front frame are changed by moving the connecting portion along the guide groove. Moreover, the notch part for making the fitting part of a connection part fit in the 1st position of a guide groove is provided in the guide part. The lever portion of the connecting portion is rotatable in the first direction or the second direction around the axial direction of the shaft portion provided with the fitting portion. For example, the user suppresses relative movement between the connecting portion and the front frame including the guide portion by rotating the lever portion in the first direction at the first position. That is, the main frame is in a state in which the movement relative to the front frame is suppressed. A mechanism for suppressing relative movement between the connecting portion and the guide portion as the lever portion rotates is arbitrary. For example, you may carry out by the tightening using the reverse screw mentioned later. Alternatively, for example, when the lever portion rotates to a predetermined position in the first direction, a connecting mechanism and a guide portion are provided by fixing the position of the lever portion by providing a holding mechanism that fixes the rotation of the lever portion. Relative movement may be suppressed. Thereby, the front frame can be more securely fastened to the main frame by the fitting portion and the lever portion. In this state, for example, the user can board the foldable vehicle and perform driving or the like.

  Further, for example, the user can relatively move the connecting portion and the guide portion by rotating the lever portion in the second direction at the first position. In a state where this relative movement is possible, the fitting portion fitted into the notch portion is pulled out using, for example, a lever portion, so that the fitting can be released. The user operates the lever portion of the connecting portion to move the fitting portion from the first position to the second position along the guide groove. Thereby, the folding vehicle is in a folded state as the rear wheel of the main frame moves in a direction approaching the front frame side. In such a configuration, the connecting portion connected to the guide portion of the front frame is switched between the first position and the second position, so that, for example, a state in which the user drives and a folded state in which the user carries it, etc. Can be easily switched. The lever portion of the connecting portion has two functions of a lock lever for fixing the main frame and the front frame and an operation lever for switching the state, thereby improving the operability of the operating user. It becomes possible.

  A foldable vehicle according to another aspect of the present invention is the foldable vehicle according to claim 1, wherein the shaft portion includes a first screw portion provided at an end portion on one side in the axial direction; A second screw portion provided at an end portion on the other side and having a reverse screw relationship with the first screw portion, and the lever portion is a first screw portion screwed into the first screw portion; A second threaded portion that is threadedly engaged with the second threaded portion, and the first and second threaded portions of the shaft portion of the first portion are rotated in the first direction as the lever portion rotates in the first direction. It moves to the direction which adjoins mutually toward an axial direction, and is characterized by clamping a notch part.

  In the foldable vehicle, the shaft portion includes a first screw portion and a second screw portion at each of both end portions in the axial direction. The first and second screw portions have a reverse screw relationship. The lever portion is provided with a first screwing portion screwed into the first screw portion and a second screwing portion screwed into the second screw portion. When the lever portion is rotated in the first direction at the first position, for example, the first and second screwing portions are rotated in a direction of tightening with respect to the first and second screw portions. The first and second screwing portions move in directions close to each other as the lever portion rotates, and clamp the notch portions from both sides to fix the main frame to the guide portion. In such a configuration, in addition to fitting the fitting portion to the notch portion, the main frame is attached to the guide portion (front frame) by applying the tightening force of the first and second screwing portions. It becomes possible to fix more firmly. In addition, the user can rotate the lever portion to tighten the two screwed portions of the first and second screwed portions at the same time, so that the main frame can be easily and more securely attached to the guide portion (front Frame).

  Moreover, the foldable vehicle which concerns on the other side surface of this invention is a foldable vehicle of Claim 1 or Claim 2, Comprising: The guide part fits the fitting part of a shaft part in a 2nd position. The second notch portion is provided.

  In the folding vehicle, the guide portion includes a second notch portion for fitting the fitting portion at the second position in addition to the first position. For this reason, in a state where the fitting portion is moved to the second position, that is, in a state where the vehicle is folded, the fitting portion is fitted to the second notch portion, so that the relative relationship between the main frame and the front frame is achieved. It becomes possible to suppress movement. Thereby, similarly to the first position, the fitting portion is fitted into the second notch portion, or the holding state or the release of the folded state is switched by releasing the fitting portion from the fitting of the second notch portion. Is possible.

  According to the technology disclosed in the present application, it is possible to provide a foldable vehicle that can more reliably fasten the front frame to the main frame.

It is a side view for explaining the composition of the folding type vehicle of an embodiment roughly, and illustrates the state where a user can drive in a sitting posture. It is AA sectional view taken on the line of FIG. It is the elements on larger scale which expanded the part concerning the 1st connection part of FIG. It is a BB sectional view taken on the line of FIG. It is a perspective view of the axial part provided in the 1st connection part. FIG. 2 is a side view schematically illustrating the configuration of the foldable vehicle in FIG. 1 and illustrates a state in which the vehicle is folded.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment embodying a foldable vehicle according to the present invention will be described with reference to the drawings. In the drawings used for the following description, the dimensional ratio of each part is not necessarily drawn accurately. FIG. 1 is a side view schematically showing a configuration of a foldable vehicle 10 (hereinafter sometimes simply referred to as “vehicle 10”) according to an embodiment of the present invention. In the state shown in FIG. 1, the vehicle 10 is in a state in which a user can sit on the seat portion 25 and drive on the vehicle running surface 8 (hereinafter sometimes referred to as “driving state”). .

  As shown in FIG. 1, the vehicle 10 includes a main frame 11, a guide portion 13, a front frame 15, a front wheel 18, a rear wheel 21, a seat support frame 23, and a seat portion 25. The vehicle 10 of the present embodiment is a folding tricycle including, for example, one front wheel 18 and a pair of left and right rear wheels 21. Further, the vehicle 10 does not include a prime mover, a pedal, or the like, and obtains a propulsive force for moving forward by a user kicking the vehicle running surface 8 or the like. The vehicle 10 may be configured to include a pedal that rotates the front wheel 18. Alternatively, the vehicle 10 may have a configuration including, for example, an electric motor as a prime mover that drives at least one of the front wheels 18 and the rear wheels 21. Further, the vehicle 10 may have a configuration in which an inline motor is built in at least one of the front wheel 18 and the rear wheel 21.

  The main frame 11 includes a long side portion 11A extending in the front-rear direction and a short side portion 11B formed continuously obliquely upward at a predetermined angle from the front end portion of the long side portion 11A. Yes. This predetermined angle is an obtuse angle (for example, 120 °) in the example shown in FIG. In the driving state shown in FIG. 1, the long side portion 11 </ b> A is arranged on the vehicle travel surface 8 side with respect to the short side portion 11 </ b> B. Therefore, the main frame 11 has a substantially L shape with the front side curved in a side view (vehicle width direction) shown in FIG. Moreover, the guide part 13 is connected with the front-end | tip of the short side part 11B by the 1st connection part 12 mentioned later.

  The guide portion 13 has a substantially rectangular shape with long sides extending in the vertical direction in a side view. The guide portion 13 is configured by arranging a pair of flat plates formed in a substantially rectangular shape so as to face each other in the left-right direction. A front frame 15 is accommodated in a portion on the front side between the guide portions 13 facing in the left-right direction. The front frame 15 is formed in a bar shape extending in the vertical direction, and penetrates between the pair of guide portions 13 in the horizontal direction in the vertical direction. The front frame 15 is attached to the guide portion 13 by a holding member (not shown) so that the front frame 15 can be relatively rotated around the axis and cannot be moved in the axial direction.

  The upper end portion 15A of the front frame 15 is curved forward, and a handle 27 is fixed to the curved tip portion. A front wheel 18 is attached to a lower end portion 15B of the front frame 15 on the vehicle running surface 8 side so as to be rotatable about an axle 18A. In the state shown in FIG. 1, the front wheel 18 is attached with the axle 18 </ b> A along the left-right direction. In such a configuration, the user operates the handle 27 to rotate the front frame 15 relative to the guide portion 13 around the axis, thereby causing the front wheels 18 (axle axles) to the guide portion 13 and the main frame 11. 18A), that is, the steering angle can be changed.

  Further, a rear wheel 21 is attached to the rear end portion of the long side portion 11A of the main frame 11 so as to be rotatable about the axle 21A. FIG. 2 shows a cross-sectional view taken along line AA in FIG. 1 as viewed from the direction of the arrow, and corresponds to a front view of the rear configuration of the vehicle 10 as viewed from the front side. As shown in FIGS. 1 and 2, the main frame 11 has a pair of flat plates formed in a substantially L-shape each having the long side portion 11A and the short side portion 11B described above facing each other in the left-right direction. It is configured.

  The seat support frame 23 is provided between the main frames 11 (long side portions 11A) facing each other in the left-right direction, and is formed in a plate shape extending in the up-down direction. The seat support frame 23 is configured by arranging a pair of longitudinal flat plates facing each other in the left-right direction. The seat support frame 23 is connected to the main frame 11 by the second connecting portion 24. Specifically, the long side portion 11 </ b> A of the main frame 11 is attached to both end portions in the axial direction of the shaft member 24 </ b> A inserted through the seat support frame 23 at the lower end portion of the seat support frame 23. . Each of the pair of seat support frames 23 is provided to be rotatable relative to the main frame 11 around the axis of the shaft member 24A.

  The second connecting portion 24 is switched by a lock mechanism (not shown) between a variable state where the relative rotation of the seat support frame 23 with respect to the long side portion 11A and a locked state where the rotation is impossible. It is configured. As this lock mechanism, for example, a known structure such as a screw mechanism or a meshing gear mechanism is appropriately used. That is, in the variable state, the seat support frame 23 is rotatable relative to the main frame 11 around the axis of the shaft member 24A. Further, the seat support frame 23 cannot be rotated relative to the main frame 11 around the axis of the shaft member 24A in the locked state. The locked state is established when the main frame 11 and the seat support frame 23 are at a predetermined angle, but may not be established in other cases. Preferably, the angle between the main frame 11 and the seat support frame 23 in a state where the user shown in FIG. 1 operates in the sitting position, and the main frame 11 and the seat support frame 23 in a state in which the vehicle 10 shown in FIG. 6 is folded. The locked state may be established by limiting to the angle.

  A seat portion 25 is attached to the upper end portion of the seat support frame 23. The seat portion 25 corresponds to a so-called saddle on which the user sits in the driving state. The seat portion 25 is connected to the pair of seat support frames 23 by the third connecting portion 29. Specifically, the seat portion 25 is attached to both end portions in the axial direction of the shaft member 29 </ b> A inserted through the seat support frame 23 at the upper end portion of the seat support frame 23. The seat portion 25 is provided so as to be rotatable relative to the seat support frame 23 around the axis of the shaft member 29A. The third connecting portion 29 includes a locking mechanism (not shown), like the second connecting portion 24, and a variable state that allows the seat portion 25 to rotate relative to the seat support frame 23, and the rotation The lock state to be disabled can be switched.

  Next, the structure of the 1st connection part 12 which connects the main frame 11 and the guide part 13 is demonstrated. As shown in FIG. 1, the guide portion 13 is formed with a guide groove 13A extending in the vertical direction. 13 A of guide grooves are provided as a groove part which guides the 1st connection part 12 between the position of the lower end part side, and the position of an upper end part side. The guide groove 13 </ b> A has a substantially rectangular shape that is long in the vertical direction when viewed from the side, and extends in a direction substantially parallel to the axial direction of the front frame 15. 13 A of guide grooves are formed in each of the guide part 13 which opposes in the left-right direction. The guide groove 13A has a constant width W (see FIG. 3) in the direction along the short side of the guide portion 13 and is directed toward the direction along the long side (slightly rearward in the state shown in FIG. 1). ) And is formed through the guide portion 13. The width W is formed in such a size that a fitting portion 57 of the shaft portion 51 described later can freely move. At the upper end of the guide groove 13A, a notch is formed in the direction perpendicular to the longitudinal direction of the guide groove 13A, that is, in the direction along the short side of the guide portion 13 when viewed from the left-right direction and backward. A portion 41A is formed. The notch portion 41A is formed by narrowing the width of the groove according to the shape of the fitting portion 57 described later, and communicates with the upper end portion of the guide groove 13A.

  FIG. 3 is an enlarged view of a portion where the first connecting portion 12 in FIG. 1 is provided. 4 is a cross-sectional view of the cross section taken along the line BB in FIG. 1 as viewed from the direction of the arrow. As shown in FIG. 3, a notch 41B having the same shape as the notch 41A at the upper end is formed at the lower end of the guide groove 13A. The notch portion 41B is formed in the direction along the short side of the guide portion 13 when viewed from the left-right direction and toward the front. The notch portion 41B communicates with the lower end portion of the guide groove 13A. Accordingly, the notch 41A at the upper end and the notch 41B at the lower end are formed in opposite directions in the front-rear direction. The first connecting portion 12 attached to the main frame 11 is fitted and fixed in the two notch portions 41A and 41B of the guide groove 13A. In the operation state shown in FIG. 1, the first connecting portion 12 is fixed to the lower notch portion 41 </ b> B. In the folded state shown in FIG. 6, the first connecting portion 12 is fixed to the upper notch portion 41A.

  As shown in FIGS. 3 and 4, the first connecting portion 12 has a shaft portion 51 for insertion through the guide groove 13 </ b> A and a lever portion 53 provided to be rotatable with respect to the shaft portion 51. doing. The shaft portion 51 has a substantially cylindrical shape extending in the left-right direction, and has a cylindrical-shaped large-diameter portion 55 at the center portion in the axial direction.

  FIG. 5 is a perspective view of an end portion on one side of the shaft portion 51 in the axial direction. As shown in FIG. 5, the large-diameter portion 55 is provided with a fitting portion 57 formed from the axial end surface 55 </ b> A toward the outside in the axial direction. The fitting portion 57 is inserted into the guide groove 13A of the guide portion 13 and is fitted to the notch portions 41A and 41B. The fitting portion 57 is positioned equidistantly across the central axis of the shaft portion 51 and has a side surface portion 57A (only one is shown in FIG. 5) having a plane parallel to the radial direction of the large diameter portion 55. The large-diameter portion 55 is formed in a substantially plate shape surrounded by an outer peripheral surface portion 57B (only one is shown in FIG. 5) that connects the end portion of the side surface portion 57A in the radial direction along the circumference of the large-diameter portion 55. ing. The side surface portion 57A is configured by a plane along a direction perpendicular to the end surface 55A.

  As shown in FIG. 3, the distal end portion 11C of the short side portion 11B has an arc shape in a side view, and the fitting portion 57 is inserted. The notch portion 41B is formed to protrude forward from the lower end portion of the guide groove 13A. The notch portion 41 </ b> B is formed in a shape that matches the outer shape of the fitting portion 57. For this reason, the fitting portion 57 is fitted into the notch portion 41B while bringing the side surface portion 57A and the outer peripheral surface portion 57B into sliding contact with the inner peripheral surface of the notch portion 41B. On the other hand, the guide groove 13A is formed with a larger width W than the fitting portion 57, and the fitting portion 57 can freely move in the vertical direction in the groove.

  As shown in FIG. 4, the shaft portion 51 is drivingly connected to the main frame 11 in a state where the fitting portion 57 is inserted into the through hole 11D of the distal end portion 11C. In addition, a bush 31 is interposed between the end surface 55A of the shaft portion 51 and the inner peripheral surface 11E in the left-right direction of the tip portion 11C to mitigate an impact when the lever portion 53 is operated. FIG. 5 shows a state where the bush 31 is removed.

  As shown in FIG. 5, the fitting portion 57 is provided with a cylindrical screw portion 59 extending in the axial direction from an end surface 57C on the outer side in the axial direction. The screw portion 59 is provided at the center of the fitting portion 57, that is, at a position along the central axis of the large diameter portion 55. As shown in FIG. 4, the threaded portion 61 of the lever portion 53 is screwed into each of the threaded portions 59 provided on both sides of the shaft portion 51 in the axial direction. In the following description, when it is necessary to distinguish between the screw part 59 and the screwing part 61 provided in the axial direction of the shaft part 51, the screw part 59A, the screw part 59B, and the screwing part are described. An explanation will be made by adding an alphabetical character after the reference number as in 61A and 61B. In addition, when it is not necessary to distinguish, the alphabet part is omitted and the screw part 59 and the screwing part 61 are collectively referred to.

  A threaded portion 61A is threadedly engaged with the threaded portion 59A. A screwing part 61B is screwed to the screw part 59B. The threaded portion 61 has a disc shape with a plate thickness formed with a thickness corresponding to the axial length of the screw portion 59. The lever portion 53 is provided such that a grip portion 63 for operating the first connecting portion 12 connects the two screwed portions 61A and 61B. In the state shown in FIG. 4, the gripping portion 63 has a substantially U shape with the rear side serving as the bottom. The gripping portion 63 has a rod shape that is curved so as to surround the rear side of the guide portion 13, and screwed portions 61 </ b> A and 61 </ b> B are integrally provided at both ends thereof. For this reason, as shown in FIG. 1, when the lever portion 53 is rotated clockwise or counterclockwise around the rotation axis of the shaft portion 51, the screwing portions 61A and 61B rotate in the same direction. Move.

  As shown in FIG. 4, the screwing portion 61 is formed with a portion (for example, a female screw) where the screw portion 59 is screwed into a circular center. In the screw portions 59A and 59B of the present embodiment, portions (for example, male screws) to be screwed into the screwing portions 61A and 61B are opposite to each other, that is, in a reverse screw relationship. In the present embodiment, for example, the screw portion 59A on the left side in the left-right direction (vehicle width direction) is a screw (for example, a positive screw) that is tightened by rotating the screwing portion 61A clockwise. Further, the right screw portion 59B is a screw (for example, reverse screw) that is tightened by rotating the screwing portion 61B counterclockwise. Therefore, when the screwing portions 61A and 61B are rotated in the direction in which the gripping portion 63 is tightened, the screwing portions 61A and 61B move in the axial direction of the shaft portion 51, that is, in the directions close to each other from both sides in the left-right direction in FIG. To do. As a result, the guide portion 13 and the distal end portion 11C are sandwiched between the end face 55A and the screwing portion 61 in the left-right direction, and cannot be relatively rotated and moved. As a result, the position of the guide portion 13 with respect to the main frame 11 is fixed.

  Next, an operation for switching the driving state and the folded state of the vehicle 10 will be described. First, as shown in FIG. 1, when the vehicle 10 is in a driving state, the second connecting portion 24 and the third connecting portion 29 are in a locked state, respectively. The first connecting portion 12 is fixed in a state of being fitted to a notch portion 41 </ b> B communicating with the lower end portion of the guide portion 13. Specifically, for example, the user operates the lever part 53 to push the fitting part 57 into the notch part 41B and fit the fitting part 63 as shown in FIG. Accordingly, the rotation of the fitting portion 57 is restricted. Then, with the fitting portion 57 fitted to the notch portion 41B, as shown in FIG. 1, for example, the lever portion 53 is fixed as indicated by a solid line from the position where the fixation indicated by the alternate long and short dash line is released. Rotate to the position. The guide portion 13 is fixed to the main frame 11 by tightening the screwing portion 61 with respect to the screw portion 59. As a result, the vehicle 10 is locked in the driving state shown in FIG. 1 by the cooperation of the first to third connecting portions 12, 24, and 29. Then, the user can enjoy driving safely by sitting on the seat portion 25.

  In order to shift from the operating state to the folded state shown in FIG. 6, for example, the second connecting portion 24 is unlocked, and the seat support frame 23 is rotatable with respect to the long side portion 11 </ b> A of the main frame 11. And Then, the seat support frame 23 is rotated in the direction approaching the main frame 11 (in the state shown in FIG. 1, it is rotated counterclockwise).

  At this time, when the seat portion 25 comes into contact with another member, the lock of the third connecting portion 29 is released, and the seat portion 25 is rotated with respect to the seat support frame 23 so that the angle is set. You may work while changing. After the seat support frame 23 is rotated to a position close to the main frame 11 as a whole, the second connecting portion 24 and the third connecting portion 29 are brought into a locked state. Further, the lever portion 53 is rotated from the fixed position indicated by the solid line in FIG. 1 to the position where the fixation indicated by the alternate long and short dash line is released. As a result, the tightening of the guide portion 13 and the main frame 11 by the screwing portion 61 is released.

  Next, by pulling the grip portion 63 to the rear side in FIG. 1, the fitting portion 57 fitted in the notch portion 41B is pulled out to the guide groove 13A. Since the shaft part 51 of the 1st connection part 12 is penetrated by the front-end | tip part 11C, the main frame 11 moves with the movement of the fitting part 57. FIG. In this state, the grip portion 63 is operated to move the fitting portion 57 along the guide groove 13A upward from the vehicle travel surface 8 side in FIG. The main frame 11 moves in the direction in which the long side portion 11 </ b> A and the rear wheel 21 approach the front frame 15 in accordance with the movement of the fitting portion 57, that is, the movement of the first connecting portion 12. And the main frame 11 changes from the substantially parallel state with respect to the vehicle travel surface 8 shown in FIG. 1 to the state standing with respect to the vehicle travel surface 8 shown in FIG.

  Next, by operating the gripping portion 63 and pushing the fitting portion 57 into the notch portion 41A communicating with the upper end portion of the guide groove 13A as shown in FIG. The fitting portion 57 is restricted from rotating with the rotation. Then, with the fitting portion 57 fitted to the notch portion 41A, as shown in FIG. 6, for example, the lever portion 53 is fixed as indicated by a solid line from the position where the fixation indicated by the alternate long and short dash line is released. Rotate to the position. The guide portion 13 is fixed to the main frame 11 by tightening the screwing portion 61 with respect to the screw portion 59.

  A state in which relative rotation and relative movement of the front frame 15, the guide portion 13, the main frame 11, and the seat support frame 23 are restricted by the first to third coupling portions 12, 24, and 29 being locked. Thus, the folded state is stably maintained. Further, the front wheel 18 and the rear wheel 21 are provided at positions relatively displaced in the left-right direction, and can be rotated even in the folded state. For this reason, for example, the user can carry the vehicle 10 easily folded while pulling the handle 27 while rotating the front wheel 18 and the rear wheel 21 on the vehicle travel surface 8.

  Incidentally, the 1st connection part 12 is an example of a connection part. The lower end portion of the guide groove 13A is an example of a first position. The upper end portion of the guide groove 13A is an example of the second position. The screw portions 59A and 59B are examples of first and second screw portions. The screwing portions 61A and 61B are examples of first and second screwing portions. The notch portion 41B is an example of a second notch portion.

As mentioned above, according to above-mentioned embodiment, there exist the following effects.
The main frame 11 of the foldable vehicle 10 is connected to each other via a guide portion 13 to which a front frame 15 is attached and a connecting portion 12. The front frame 15 is attached to the guide portion 13 so as to be relatively rotatable about the axis and not to be relatively movable in the axis direction. The guide portion 13 is provided with a guide groove 13 </ b> A for guiding the fitting portion 57 of the connecting portion 12 in the vertical direction of the vehicle 10. For this reason, the main frame 11 is switched to the operating state or the folded state by moving the fitting portion 57 of the connecting portion 12 along the guide groove 13 </ b> A to change the relative position with respect to the front frame 15. Further, a notch portion 41B for fitting the fitting portion 57 is formed at the lower end portion of the guide groove 13A. For example, in the operation state shown in FIG. 1, the user can connect the main frame 11 having the connecting portion 12 to the guide portion 13 and the front frame 15 when the fitting portion 57 is fitted to the notch portion 41B. Thus, the relative position and the like are fixed.

  Moreover, fitting can be cancelled | released by operating the lever part 53 of the 1st connection part 12, and pulling out the fitting part 57 fitted by the notch part 41B. The user operates the lever portion 53 to move the fitting portion 57 along the guide groove 13A from the notch portion 41B side (vehicle running surface 8) to the upper notch portion 41A side. The vehicle 10 is in the folded state shown in FIG. 6 as the main frame 11 and the rear wheel 21 move so as to approach the front frame 15 and the front wheel 18 side. Thereby, it is possible to easily switch between the operating state and the folded state by switching the first connecting portion 12 between the lower end portion (first position) and the upper end portion (second position) of the guide groove 13A. It becomes.

  The screw portions 59A and 59B provided at both axial ends of the shaft portion 51 are screws whose portions (for example, male screws) to be screwed into the screw portions 61A and 61B of the lever portion 53 are opposite to each other. That is, it has a reverse screw relationship. For this reason, when the screwing portions 61A and 61B are rotated in the direction in which the gripping portion 63 of the lever portion 53 is tightened, the screwing portions 61A and 61B are brought closer to each other from both sides in the axial direction of the shaft portion 51 (the left-right direction in FIG. Move towards. As a result, the guide portion 13 and the distal end portion 11C are sandwiched between the end face 55A and the screwing portion 61 in the left-right direction, and cannot be relatively rotated and moved. As a result, the position of the guide portion 13 with respect to the main frame 11 is fixed.

  Further, the guide groove 13A of the guide portion 13 includes notches 41A and 41B on both sides in the vehicle vertical direction. Therefore, even in the folded state shown in FIG. 6, the main frame 11 can be fixed to the front frame 15 by fitting the fitting portion 57 to the notch portion 41A.

  In addition to the first connecting portion 12, the vehicle 10 includes a second connecting portion 24 that connects the main frame 11 and the seat support frame 23, and a third connecting portion 29 that connects the seat support frame 23 and the seat portion 25. And. The vehicle 10 is locked in the driving state shown in FIG. 1 by the cooperation of the first to third connecting portions 12, 24, and 29. As a result, the user can sit on the seat portion 25 and enjoy driving safely. Similarly, when the first to third connecting portions 12, 24, 29 are in a locked state, the relative rotation and relative movement of the front frame 15 and the main frame 11 are restricted, and the folded state is stabilized. Retained. Furthermore, by appropriately releasing the locked state of the first to third connecting parts 12, 24, 29 and changing the orientation of the seat part 25, it becomes possible to smoothly switch between the operating state and the folded state. ing.

In addition, this embodiment does not limit this invention, Of course, various improvement and deformation | transformation are possible within the range which does not deviate from the summary of this invention.
In the above embodiment, the screw portions 59A and 59B are configured to have a reverse screw relationship, but are not limited thereto. For example, the screw part 59A and the screwing part 61A, and the screw part 59B and the screwing part 61B may be configured as screws that are tightened by rotating clockwise. In this case, it is good also as a structure which provides the holding part 63 in each of the screwing parts 61A and 61B, and fastens the screwing parts 61A and 61B by rotating each holding part 63 separately.

  Moreover, in the said embodiment, in addition to the 1st connection part 12, the vehicle 10 is connected with the 2nd connection part 24 which connects the main frame 11 and the seat support frame 23, and the seat support frame 23 and the seat part 25. Although it was set as the structure provided with the 3rd connection part 29, it is good also as a structure provided only with the 1st connection part 12. FIG. For example, the seat portion 25 may be fixed to the seat support frame 23 at all times.

  Moreover, in the said embodiment, although it was the structure which fastens the screwing part 61 to the screw part 59 with the rotation of the lever part 53, and fixes the connection part 12 and the guide part 13, it is not limited to this. For example, a holding mechanism that fixes the rotating lever portion 53 may be provided. For example, a holding mechanism that engages with the lever portion 53 rotated to the position indicated by the solid line shown in FIG. 1 and fixes the rotation position of the lever portion 53 may be provided. Thereby, when the lever part 53 is locked by the holding mechanism, the first connecting part 12 is in a state where the fitting part 57 is fitted to the notch part 41B, and the entire shaft part 51 and the lever part 53 are engaged. The position is fixed. That is, the main frame 11 and the guide portion 13 are fixed. By such a holding mechanism, relative movement between the main frame 11 and the guide portion 13 may be suppressed.

Further, the guide portion 13 may include only the notch portion 41B for fixing the operation state and may not include the notch portion 41A that holds the folded state. In this case, the vehicle 10 may include another lock mechanism or the like for maintaining the state in the folded state.
Moreover, in the said embodiment, although the notch part 41A of the upper end part of the guide groove 13A and the notch part 41B of a lower end part were formed and formed toward the mutually reverse direction in the front-back direction, it is not restricted to this, 2 The two notches 41A and 41B may be formed in the same direction or in a direction shifted from each other by a predetermined angle.

  Moreover, in the said embodiment, although demonstrated as an example the tricycle provided with the one front wheel 18 and the two rear wheels 21 as a foldable vehicle in this application, it is not restricted to this, Even if it is a two-wheeled vehicle or a four-wheeled vehicle, Good.

DESCRIPTION OF SYMBOLS 10 Folding type vehicle 18 Front wheel 15 Front frame 21 Rear wheel 12 1st connection part 11 Main frame 13A Guide groove 13 Guide part 41A, 41B Notch part 57 Fitting part 51 Shaft part 53 Lever part 59A, 59B Screw part 61A, 61B Screw Joint

Claims (3)

A front frame with a front wheel attached,
A main frame having a connecting portion for attaching a rear wheel to the front frame;
A guide portion attached to the front frame and provided with a guide groove for guiding the connecting portion of the main frame between a first position and a second position;
The guide portion has a notch portion provided at the first position of the guide groove,
The connecting portion includes a shaft portion provided with a fitting portion for fitting into the notch portion, and a lever portion provided rotatably about the axial direction of the shaft portion,
By rotating the lever portion in the first direction at the first position, relative movement between the connecting portion and the guide portion is suppressed, and the lever portion is moved in the second direction opposite to the first direction. , The coupling portion and the guide portion can be moved relative to each other, and the fitting portion fitted to the notch portion in a state in which the relative movement is enabled is removed, along the guide groove. By folding the fitting portion from the first position to the second position, the folding portion is folded as the rear wheel of the main frame moves in a direction approaching the front frame. vehicle. The shaft portion includes a first screw portion provided at an end portion on one side in the axial direction and a second screw portion provided at an end portion on the other side and having a reverse screw relationship with the first screw portion. And
The lever portion includes a first screwing portion that is screwed to the first screw portion, and a second screwing portion that is screwed to the second screw portion,
The first and second threaded portions move in the first position toward each other in the axial direction of the shaft portion as the lever portion rotates in the first direction, The foldable vehicle according to claim 1, wherein the notch portion is sandwiched.   The foldable vehicle according to claim 1, wherein the guide portion has a second notch portion into which the fitting portion of the shaft portion is fitted in the second position.

Images