JP2013082426A - Foldable bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foldable bicycle that can be carried such as a carry bag and has a nice-looking appearance.SOLUTION: A carry bag-like storing member 1 includes wheels 3, 3 at a bottom part 10A of a box-shaped case body 10, and a towing extendable rod 4 in which a handle 6 is provided on a back surface side of the box-shaped case body 10 so as to be pulled out. A bicycle body 2 in a folded state is configured to be stored in the carry bag-like storing member.

Description

  The present invention relates to a folding bicycle.

  Conventionally, a folding bicycle that can be folded and carried has been proposed (see Patent Document 1).

JP 2009-220799 A

  However, conventional folding bicycles are only covered with a seat on the folded bicycle, and some tires, chains, etc. may be exposed. There was a disadvantage that it was attached or the lubricating oil adhered to it and was annoying. In addition, the appearance of using a bicycle tire as a rolling wheel as it is cannot be said to be smart, and there is a problem that it is not good in appearance when it is brought into public transportation such as trains and buses and in the workplace.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a folding bicycle that can be carried like a carry bag and has a good appearance.

  The folding bicycle according to the present invention has a wheel at the bottom of the box-type case body, and is folded into a carry-bag-like storage member having a traction telescopic hook provided on the back side of the box-type case body so that the handle can be pulled out freely. The bicycle body in a state can be stored.

In addition, the telescopic hook for pulling the carrying bag-like storage member is attached to the frame of the bicycle body in a deployed state via a coupling clamp member, and can be used as a handle post by attaching a handle member to the upper end. It is configured.
Further, the box-shaped case body of the carry bag-like storage member is configured to be divertable as a front basket when the bicycle body is deployed and used.
The bicycle main body is provided with chain detachment preventing means for constantly applying tension to the chain to prevent the chain from detaching from the gear portion from the middle of the folding to the folded state.

In addition, the pulling telescopic hook includes a T-shaped insertion hook member having the handle at the upper end, and a mounting side hook in which the insertion hook member is slidably inserted and the handle can be accommodated. An upper opening-shaped exterior cylindrical member having an upper end, and the mounting lateral flange of the exterior cylindrical member is formed in a tapered surface shape in which the front and rear end surfaces and the left and right side surfaces are gradually reduced in diameter toward the upper end, The bicycle body is configured so that it can be fitted by being press-fitted from above in the center of the handle member when the bicycle body is deployed.
The weight of the bicycle body is set to 10 kg or less.
The tire of the bicycle main body has a diameter set to 12 inches to 20 inches.

  According to the folding bicycle of the present invention, if the carrying bag-like storage member is pulled and carried, it does not appear to carry the bicycle body in appearance, and it is smart and smart even for a weak woman or child. Can be carried around. It looks new and nevertheless, you can ride comfortably. In addition, since all bicycle parts can be carried in a carrying bag-like storage member, it is possible to save space and not inconvenience surrounding people.

It is the section front view showing one embodiment of the present invention. It is the perspective view which showed the carry bag-shaped storage member. It is the front view which showed the bicycle main body of the expansion | deployment use state. It is the perspective view which showed the clamp member for connection. It is the simplified front view which showed the chain detachment | leave prevention means, Comprising: (a) is a front view of folding start, (b) is a front view in the middle of folding, (c) is a front view of a folding state. It is explanatory drawing which showed the expansion-contraction hook for traction, (a) has shown the contracted state, (b) has shown the expansion | extension state. It is principal part sectional drawing. It is the figure which showed the clamp member with an angle adjustment function, Comprising: (a) is front explanatory drawing, (b) is plane explanatory drawing. It is the front view which showed the bicycle main body of the expansion | deployment use state which attached the clamp member with an angle adjustment function. It is an expansion simplification front view of a chain detachment prevention means, (a) is a front view showing the middle of folding and a folded state, and (b) is a front view of a folded state.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
As shown in FIG. 1, the folding bicycle of the present invention has wheels 3, 3 on the bottom 10 </ b> A of the box-type case body 10, and has a handle 6 that can be pulled out on the back side of the box-type case body 10. A carrying bag-shaped storage member 1 having an expansion / contraction bag 4 is provided. The carry bag-shaped storage member 1 is configured to be able to store a folded bicycle body 2.
As shown in FIG. 3, the folding bicycle of the present invention is used for a user to move quickly with the bicycle body 2 in the unfolded use state, or as shown in FIG. When the bicycle cannot be traveled, the bicycle body 2 is folded and placed in the carrying bag-like storage member 1 for carrying.

  As shown in FIG. 2, the carry bag-shaped storage member 1 includes a (upper and lower) box-shaped case body 10 composed of an upper half body 11 and a lower half body 12, and a bottom wall of the lower half body 12. Wheels 3 and 3 are provided so as to be able to roll freely, and a pulling telescopic rod 4 is fixed to the back side wall portion of the lower half body 12. The upper half body 11 and the lower half body 12 can be connected and separated by a fastener F. On the back side of the upper half 11, there is provided a fastener portion 15 that can be opened and closed in the vertical direction. The upper half of the traction telescopic hook 4 that sticks to the lower half 12 and protrudes upwards is surrounded by a hug. doing. A lifting band 16 is attached to the ceiling wall portion of the upper half 11.

As shown in FIGS. 1 and 3, the bicycle body 2 includes a frame 20 that can be folded and unfolded. The frame 20 has a gear portion 23 that rotates in conjunction with the pedal 25 and rotationally drives the (rear) tire 8B via the chain C. Although not shown, the pedals 25 are provided in a pair of left and right in the traveling direction, and in a folded state of the bicycle main body 2, the stepping portion can rotate around the axis of the crank or the crank itself can be folded. You can do it.
The frame 20 includes a top portion 26 having a gear portion 23, a head portion 27 for supporting a front fork 31 having a front tire 8A, a back fork portion 28 having a rear tire 8B, and a saddle 30 at an upper end. It consists of a seat tube portion 29 into which the attached seat post 32 can be inserted. The top portion 26 of the frame 20, the head portion 27 is pivotally swingably first axis L ₁ around, also rockably back fork portion 28 to the second axis L ₂ around pivot connection Has been. Further, a seat tube portion 29 is fixed to the rear end portion of the top portion 26. Note that, when the bicycle main body 2 is deployed and used, the head portion 27 is in a rocking lock state, and the back fork portion 28 is in a rocking restricted state. The material of the frame 20 is preferably a lightweight material such as carbon (carbon steel) or aluminum.

The pulling telescopic hook 4 of the carrying bag-like storage member 1 is attached to the frame 20 of the bicycle main body 2 in the unfolded use state shown in FIG. 3 via a connecting clamp member 9, and a handle member 21 is attached to the upper end thereof. The handle post 22 is configured to be divertable.
A steering shaft 33 that is integrally connected to the front fork 31 passes through the head portion 27 of the frame 20, and a connecting clamp member 9 is attached to the upper end portion of the steering shaft 33.
As shown in FIG. 4, the first clamping hole 9 </ b> A for attaching to the steering shaft 33 and the lower end portion 4 </ b> B (see FIG. 3) of the traction telescopic rod 4 are inserted into the coupling clamp member 9. A second tightening hole 9B is provided for support. The first tightening hole 9A and the second tightening hole 9B can be tightened with bolts and nuts. The coupling clamp member 9 is coupled so that the steering shaft 33 and the pulling telescopic rod 4 rotate in conjunction with each other. The steering shaft 33 and the traction telescopic rod 4 are preferably formed in a non-circular cross section. The first tightening hole 9A is fitted into the steering shaft 33, and the second tightening hole 9B is It is preferable to form it in a non-circular shape so as to be fitted to the pulling telescopic rod 4 to restrict rotation.

As shown in FIG. 3, the box-shaped case main body 10 of the carry bag-shaped storage member 1 is configured to be divertable as a front basket 24 when the bicycle main body 2 is deployed and used.
When the bicycle main body 2 is deployed and used, the box-shaped case main body 10 (the front basket 24) is repeatedly turned upside down on the lower half 12 fixed to the upper opening shape by the pulling telescopic rod 4. The body 11 is inserted for interior decoration.

Further, a chain detachment preventing means 5 is provided to constantly apply tension to the chain C from the middle of folding the bicycle body 2 to the folded state to prevent the chain C from detaching from the gear portion 23.
As shown in FIGS. 5 and 10, the chain detachment preventing means 5 includes a first swing piece 41 having a chain pressing portion 17 at the tip and a second swing piece 42. The first oscillating piece 41 and the second oscillating piece 42 are pivotally attached to the top portion 26 with the same axial center, and further, a resilient member 43 is attached to the pivotally attached portion, and oscillates with a resilient force. Linked as possible. The resilient member 43 preferably uses a scissor coil spring. A coil spring 40 is connected to the base end portion of the second swing piece 42. The coil spring 40 is a swingable is pivotally connected to a part of the top portion 26 (seat tube 29), is connected to a portion of the back fork portion 28 at the second axis L ₂ position near.
In the deployed and used state shown in FIG. 3, the chain detachment preventing means 5 is supported at a position where the chain pressing portion 17 does not contact the chain C (downward). In the folded state shown in FIG. 1, the chain detachment preventing means 5 applies a tension to the chain C by elastically pressing the chain pressing portion 17 to prevent the chain C from detaching from the gear portion 23.

As shown in FIG. 6, the retractable retractable rod 4 has a T-shaped insertion rod member 13 having a handle 6 at the upper end, and the insert rod member 13 is slidably inserted and the handle 6 can be stored. And an outer cylindrical member 14 having an upper opening shape having the mounting ridge 7 at the upper end. The mounting horizontal rod 7 for the exterior cylinder member 14 is formed in a tapered surface shape in which the front and rear end surfaces 7A and 7A and the left and right side surfaces 7B and 7B are gradually reduced in diameter toward the upper end.
The pulling telescopic hook 4 has a plurality of outer hook-shaped attachment pieces 18 protruding from the lower end portion 4B. The outer casing-shaped attachment piece 18 is formed integrally with the exterior cylinder member 14 and is fixed to the box-type case body 10 (lower half body 12) using screws or bolts. In addition, it is preferable to provide the inside of the exterior cylinder member 14 with the elastic member which elastically urges in the direction which makes the insertion insertion member 13 protrude (illustration omitted). The outer cylindrical member 14 has a plurality of locking holes 19 penetrating at a plurality of locations, and is inserted and locked with a protruding / retractable small protrusion 13 </ b> A provided in the insertion rod member 13. It is comprised so that 13 can be hold | maintained in a predetermined position. Although not shown in the drawings, the outer cylindrical member 14 and the outer casing-shaped mounting piece 18 may be configured as separate parts that can be separated. In this case, the outer casing-shaped mounting piece 18 fixed to the box-shaped case main body 10 is provided. The traction telescopic rod 4 is detachably attached for use.

As shown in FIGS. 3 and 7, when the bicycle main body 2 is deployed and used, the fitting recess 21A in the center of the handle member 21 is press-fitted from above (the towing telescopic hook 4). It is configured to be pluggable.
The pulling telescopic rod 4 presses the front and rear end surfaces 7A and 7A and the left and right side surfaces 7B and 7B of the mounting horizontal rod 7 of the outer cylinder member 14 against the fitting recess 21A of the handle member 21. With this configuration, when the user operates by gripping the grips G and G of the handle member 21 in the unfolded and used state, the traction telescopic hook 4 and the handle member 21 can be firmly fixed without rattling. The handle member 21 has locking pins 38, 38 that can be protruded / retracted from the side wall surface of the fitting recess 21 </ b> A, and the left and right side surfaces 7 </ b> B, 7 </ b> B of the mounting ridge 7 have insertion hole portions. It is preferable to provide a structure that prevents the handle member 21 from being unexpectedly pulled out of the outer cylinder member 14 by providing 39 and 39 and inserting the locking pins 38 and 38 into the insertion holes 39 and 39. .

The weight of the bicycle body 2 is set to 10 kg or less. Further, the tires 8A and 8B of the bicycle body 2 are set to have a diameter of 12 inches to 20 inches.
Since the bicycle body 2 may be carried in the carry bag-shaped storage member 1, it is preferably as light as possible, and is set to 10 kg or less in view of the strength during travel. Moreover, the bicycle body 2 is a so-called mini-bello having (relatively) small-diameter tires 8A and 8B, and it is preferable that the outer dimension in the folded state is kept as small as possible. By designing the bicycle main body 2 to be small in this way, the carry bag-like storage member 1 is not increased in size and can be easily carried. That is, it is preferable that the bicycle main body 2 is small and lightweight with small tires 8A and 8B.

The use method (action) of the above-described folding bicycle of the present invention will be described.
As shown in FIG. 1, when the carry bag-like storage member 1 storing the folded bicycle body 2 is pushed on the push button B provided on the upper surface of the pulling telescopic rod 4, the handle 6 is pulled upward. When the user pulls the carry bag-shaped storage member 1 with the handle 6, the wheels 3 and 3 roll on the ground and support the load of the carry bag-shaped storage member 1, so that the user It can be carried smartly with a small force without feeling the weight of 2 directly.

When the user moves on a bicycle, the box-shaped case body 10 of the carry bag-like storage member 1 is separated into two (upper half body 11 and lower half body 12), and is folded. Take out the bicycle body 2. As shown in FIG. 3, the taken-out head part 27 of the bicycle body 2 is expanded so as to be extended with the top part 26 (by swinging around the first axis L ₁ ), and in the seat tube part 29, The seat post 32 is inserted and the saddle 30 is attached. Then, to deploy the back fork 28 (is swung to the second axis L ₂ around) so the top portion 26 and the stretching shape. At this time, since the chain C is prevented from detaching from the gear portion 23 by the chain detachment preventing means 5, even if the back fork portion 28 is expanded from the folded state, it is troublesome to reattach the chain C to the gear portion 23. Can be omitted.

Next, the connecting clamp member 9 is attached to the unfolded frame 20 of the bicycle body 2, and the lower end 4 </ b> B of the traction telescopic hook 4 fixed integrally to the lower half 12 of the box-type case body 10 is connected to the bicycle body 2. The clamp member 9 is inserted into the second fastening hole 9B and fastened. The towing telescopic rod 4 is tightened (with one touch) with the lower end 4B inserted into the second tightening hole 9B of the connecting clamp member 9, and the handle member 21 is attached to the upper end of the retractable telescopic rod 4 for use as a handle post 22 ( Diverted). At this time, the handle member 21 is pressed strongly from the upper side of the pulling telescopic rod 4 to press-fit the mounting lateral rod 7 into the fitting recess 21A. The handle member 21 is fitted until the locking pins 38, 38 in the fitting recess 21A are inserted into the insertion holes 39, 39 of the mounting lateral flange 7 and a click is heard (see FIG. 7).
Then, the upper half 11 of the box-shaped case body 10 divided into two is repeatedly turned upside down and inserted from above the lower half 12 to be diverted (diverted) as the front basket 24.

Next, the folded state of the bicycle body 2, when receiving the carry bag-shaped housing member 1, as shown in FIG. 5, (is swung to the second axis L ₂ around) the back fork portion 28 folded . 5A, at the beginning of the folding of the back fork portion 28, the chain C descends as the back fork portion 28 swings, and the chain pressing portion 17 at the tip of the first swing piece 41 becomes the chain C. Abut. The chain detachment preventing means 5 is such that the second oscillating piece 42 and the first oscillating piece 41 oscillate in conjunction with each other when the second oscillating piece 42 is pressed via a coil spring 40 connected to the back fork portion 28. The chain pressing portion 17 is pressed against the chain C. As shown in FIG. 5 (b), the chain detachment preventing means 5 prevents the slack by applying tension to the chain C (from the middle of folding) by the pressing force of the chain pressing portion 17. As shown in FIG. 5 (c), the chain pressing portion 17 is pulled by the chain C (reversely) until the back fork portion 28 reaches the folded state beyond the intermediate folding position. At this time, as shown in FIGS. 10 (a) and 10 (b), the chain detachment preventing means 5 performs the first swinging against the elastic urging force of the elastic member 43 by the tension of the chain C acting. The angle β formed by the first swing piece 41 and the second swing piece 42 in the folded state with respect to the angle α formed by the first swing piece 41 and the second swing piece 42 during the folding. However, it becomes smaller. In other words, the chain detachment preventing means 5 prevents (releases) excessive tension from acting on the chain C by causing the first oscillating piece 41 and the second oscillating piece 42 to oscillate with elasticity. In this way, the chain detachment preventing means 5 prevents the chain C from detaching (from the gear portion 23) by applying an appropriate tension to the chain C from the expanded state to the folded state.

In the present invention, the design can be changed, and as shown in FIG. 8, the handle post 22 (the pulling telescopic rod 4) may be attached by using a clamp member 49 with an angle adjusting function.
Angle adjusting function clamp member 49 is made of a rear half body 48 and the front half body 47, body 48 late and front half body 47 is pivotally swingably pivot axis L ₄ around. Body 48 late and front half body 47, to restrict the swing by tightening with bolts and nuts along the pivotally connected portion to the oscillation axis L _4, is configured to be able to fix at an arbitrary inclination angle ing. The front half 47 has a second tightening hole 49B into which the lower end 4B of the pulling telescopic rod 4 can be fitted, and the rear half 48 has a first fastening hole 49A into which the steering shaft 33 can be fitted. Yes. The second tightening hole 49 </ b> B can be tightened by opening and closing the buckle part 50.
As shown in FIG. 9, the clamp body 49 with the angle adjustment function allows the bicycle body 2 in a deployed use state to tilt the handle post 22 backward by a predetermined angle θ, according to the user's preference. The handle position can be changed.

  As described above, the folding bicycle according to the present invention has the wheels 3 and 3 on the bottom portion 10A of the box-type case main body 10 and the retractable extension / contraction for pulling the handle 6 on the back side of the box-type case main body 10. Since the folded bicycle main body 2 can be stored in the carry bag-shaped storage member 1 having the bag 4, if the carry bag-shaped storage member 1 is pulled and carried around, the bicycle main body 2 is carried around in appearance. It can be easily and smartly carried even by powerless women and children. Further, since all the bicycle parts can be carried in the carry bag-like storage member 1, it is possible to save space and not disturb the surrounding people.

  In addition, the pulling telescopic hook 4 of the carrying bag-like storage member 1 is attached to the frame 20 of the bicycle main body 2 in the unfolded use state via the coupling clamp member 9, and the handle member 21 is attached to the upper end to attach the handle post. 22 can be diverted so that when the bicycle body 2 is deployed, the components of the carry bag-like storage member 1 can be diverted and used as a part of the bicycle. Regardless, you can ride comfortably. The number of component parts can be reduced, and space-saving and low-cost manufacturing can be achieved.

  Further, the box-shaped case body 10 of the carrying bag-like storage member 1 is configured to be divertable as the front basket 24 under the deployed use state of the bicycle body 2, so when the bicycle body 2 is placed in the deployed use state, The components of the carry-bag-like storage member 1 can be diverted and used as a part of a bicycle, the appearance is novel, and nevertheless, it is possible to ride comfortably. The number of component parts can be reduced, and space-saving and low-cost manufacturing can be achieved.

  Further, since the bicycle main body 2 is provided with the chain detachment preventing means 5 that always applies tension to the chain C from the middle of the folding to the folded state to prevent the chain C from detaching from the gear portion 23. Even if the main body 2 is deformed from the folded state to the deployed and used state, the state where the chain C is engaged with the gear portion 23 is maintained, and the trouble of reattaching the chain C can be saved. Therefore, the bicycle body 2 can be unfolded and run immediately. Further, the chain C of the bicycle body 2 can be kept in a state where an appropriate tension is applied, the chain C is not applied with an excessive tension, and can be reliably prevented from being detached from the gear portion 23.

  Further, the pulling telescopic rod 4 includes a T-shaped insertion rod member 13 having a handle 6 at the upper end, and a mounting horizontal rod in which the insertion rod member 13 is slidably inserted and the handle 6 can be accommodated. And an outer cylindrical member 14 having an upper opening shape having an upper end 7, and the mounting flange 7 of the outer cylindrical member 14 is gradually reduced in diameter with the front and rear end surfaces 7 A and 7 A and the left and right side surfaces 7 B and 7 B facing the upper end. Since the fitting body 21A is press-fitted from above and fitted in the center of the handle member 21 when the bicycle main body 2 is deployed and used, the traction telescopic rod 4 and The handle member 21 has no backlash and can be firmly fixed, so that safety is high. When the user operates by gripping the grips G, G of the handle member 21, the handle member 21 is less rattling, can give the user a sense of security, and can ride without a sense of incongruity.

  Moreover, since the weight of the bicycle main body 2 is set to 10 kg or less, it is easy to carry.

  Further, since the tires 8A and 8B of the bicycle body 2 are set to have a diameter of 12 inches to 20 inches, the carry bag-like storage member 1 does not become too large and is easy to carry.

DESCRIPTION OF SYMBOLS 1 Carry bag-shaped storage member 2 Bicycle main body 3 Wheel 4 Towing expansion / contraction hook 5 Chain disengagement prevention means 6 Handle 7 Mounting ridge 7A Front and rear both ends 7B Left and right both sides 8A, 8B Tire 9 Connecting clamp member 10 Box-type case body 10A Bottom portion 13 Internal insertion member 14 Exterior cylinder member 20 Frame 21 Handle member 21A Fitting recess 22 Handle post 23 Gear portion 24 Front basket C Chain

A folding bicycle according to the present invention includes a carry bag-like storage member having a wheel at the bottom of a box-type case body and a pulling telescopic hook provided on the back side of the box-type case body so that a handle can be pulled out , The folded bicycle body is stored in the carrying bag-like storage member, the handle is pulled out from the pulling telescopic hook, and the carry bag-like storage member is pulled while rolling the wheel on the ground. The box-shaped case main body of the carry bag-like storage member is diverted as a front basket, and the towing telescopic hook is attached to the frame of the bicycle main body. A handle member is attached to the upper end and attached as a handle post by being attached via a coupling clamp member .

Further, up to the state folded from the middle folding of the upper Symbol bicycle body, in which the chain by applying a constant tension to the chain is provided with chain disengagement prevention means for preventing disengagement from the gear unit.

In addition, the pulling telescopic hook includes a T-shaped insertion hook member having the handle at the upper end, and a mounting side hook in which the insertion hook member is slidably inserted and the handle can be accommodated. An upper opening-shaped exterior cylindrical member having an upper end, and the mounting lateral flange of the exterior cylindrical member is formed in a tapered surface shape in which the front and rear end surfaces and the left and right side surfaces are gradually reduced in diameter toward the upper end, The bicycle body is configured so that it can be fitted by being press-fitted from above in the center of the handle member when the bicycle body is deployed .

Claims (7)

  A retractable telescopic hook having wheels (3) and (3) at the bottom (10A) of the box-shaped case body (10) and a handle (6) that can be pulled out on the back side of the box-shaped case body (10). A folding bicycle characterized in that a folded bicycle body (2) can be stored in a carrying bag-like storage member (1) having (4).   The pulling telescopic hook (4) of the carrying bag-like storage member (1) is attached to the frame (20) of the bicycle body (2) in the unfolded and used state via a connecting clamp member (9). The folding bicycle according to claim 1, wherein a handle member (21) is attached to an upper end of the folding bicycle so as to be diverted as a handle post (22).   The box-type case body (10) of the carrying bag-like storage member (1) is configured to be divertable as a front basket (24) under the deployed and used state of the bicycle body (2). Folding bicycle as described.   A chain disengagement preventing means (a chain disengagement preventing means for applying a constant tension to the chain (C) from the middle of the folding of the bicycle body (2) to the folded state to prevent the chain (C) from disengaging from the gear portion (23). The folding bicycle according to claim 1, 2 or 3, further comprising 5). The pulling telescopic hook (4) has a T-shaped insertion hook member (13) having the handle (6) at the upper end, and the insertion hook member (13) is slidably inserted and the handle. (6) comprising a mounting reed (7) that can be accommodated, and an upper opening-shaped exterior tubular member (14) having an upper end;
The above mounting flange (7) of the outer cylinder member (14) has a tapered surface shape in which the front and rear end faces (7A) (7A) and the left and right side faces (7B) (7B) are gradually reduced in diameter toward the upper end. The formed and configured to be capable of being fitted by being press-fitted from above into the fitting recess (21A) at the center of the handle member (21) when the bicycle body (2) is deployed and used. Or the folding bicycle of 4.   The folding bicycle according to claim 1, 2, 3, 4 or 5, wherein the weight of the bicycle body (2) is set to 10 kg or less.   The folding bicycle according to claim 1, 2, 3, 4, 5 or 6, wherein the tire (8A) (8B) of the bicycle body (2) has a diameter set to 12 inches to 20 inches.

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