KR19980025054U - Folding device of bicycle - Google Patents

Abstract

The present invention relates to a folding device of a bicycle, and in particular, the structure of a handle shaft, a head tube, a horizontal frame, a saddle support, a saddle tube, a stand, a pedal, and the like are improved to allow folding over almost all parts of the bicycle. It is possible to reduce the volume and make it convenient to carry and store.

The present invention provides a head structure and a saddle tube, a handle shaft inserted into a vertical frame, a saddle support, a locking structure that allows the saddle tube to be lifted in a sliding state and the lifting position can be fixed at an arbitrary position; Fastening structure so that the head tube can be selectively folded at right angles or more in one direction about the hinge in the transverse frame; And a frame folding structure installed in the middle of the horizontal frame to selectively bind the two side horizontal frames which are separated and coupled in a straight line, or to be folded at least 180 degrees around the hinge, and a locking structure for controlling the folding of the frame. And pedal folding structure so that the left and right pedals can be folded or rotated in the crank; And a stand structure installed inside the vertical frame and selectively mounted.

Description

Folding device of bicycle

The present invention relates to a folding device of a bicycle, and in particular, the structure of a handle shaft, a head tube, a horizontal frame, a saddle support, a saddle tube, a stand, a pedal, and the like are improved to allow folding over almost all parts of the bicycle. It is possible to reduce the volume and make it convenient to carry and store.

Conventional bicycles known in the prior art have a handlebar and saddle support fitted in the head tube and saddle tube to fit the user's physical condition. It is the purpose of physical application, so there is little function of volume reduction,

The structure of the handle shaft, head tube, side frame, saddle support, saddle tube, stand, pedals, etc. are mostly fixed and can not be reduced in volume. Carrying or storing it with the trunk open is a lot of trouble to carry or storage will expose the inconvenience to handling.

The present invention was devised to solve and solve all the problems caused by the existing folding device as described above.

The object of the present invention is to allow the folding of almost all parts of the bicycle so that the large volume of the bicycle can be reduced, thereby providing convenience for carrying and storing.

To achieve this purpose

The present invention proposes a locking structure that allows the head shaft and the saddle tube, the handle shaft fitted to the longitudinal frame, the saddle support, the saddle tube to be lifted in a sliding state, and at the same time, the lifting position can be fixed at an arbitrary position.

In addition, the present invention proposes a head tube fastening structure so that the head tube can be selectively folded at right angles or more in one direction about the hinge in the transverse frame.

In addition, the present invention is installed in the middle of the transverse frame frame and the frame folding structure to selectively bind the two lateral side frame coupled separately or to be folded more than 180 degrees around the hinge and the locking to control the folding of the frame Present the structure.

In addition, the present invention proposes a pedal folding structure so that the left and right pedals can be folded or rotated in the crank.

In addition, the present invention proposes a stand structure that is installed inside the bell frame and is selectively folded.

1 is an exemplary view showing a state in which the present invention is applied to a known bicycle.

Figure 2a is a cross-sectional view showing the main part showing the height adjustment combined folding structure of the handle shaft which is a main part of the present invention.

FIG. 2B is a cross-sectional view taken along the line A-A of FIG. 2A.

Figure 3a is a cross-sectional view showing the main part of the folding structure of the head tube of the present invention

FIG. 3B is a cross-sectional view taken along the line A-A of FIG. 3A.

Figure 4a is a perspective view showing the folding structure of the transverse frame, which is an essential part of the present invention.

FIG. 4B is a plan view of FIG. 4A.

4C is a cross-sectional view taken along the line A-A of FIG. 4A.

4D is a cross-sectional view taken along the line B-B in FIG. 4A.

4E is a cross-sectional view taken along the line C-C in FIG. 4B.

Figure 5a is a sectional view of the main part showing a folding structure of the left pedal which is a main part of the present invention.

FIG. 5B is an exemplary bottom view of FIG. 5A.

Figure 6a is a sectional view of the main part showing a folding structure of the right pedal which is a main part of the present invention.

Fig. 6B is a cross-sectional view taken along the line A-A of Fig. 6A.

Figure 7a is a longitudinal cross-sectional view showing the structure of the stand which is a main part of the present invention.

FIG. 7B is a side view of FIG. 7A.

Fig. 7C is a longitudinal sectional view of the main portion showing the state of folding the stand.

Figure 8 is a perspective view showing a completely folded state the bicycle to which the present invention is applied.

※ Explanation of code about main part of drawing ※

1: Handle Shaft 2: Head Tube 3: Saddle Support

4: Saddle tube 10a, 10b, 10c: Locking structure 11: Ball seating groove

12: Ball for position setting 13: Leaf spring 14: Locking cam fastening groove

15: Bracket 16: Locking pin 17: Lever

18: locking cam 20: head tube folding structure 21, 21 ': bracket

22: fork 22 ': support tube 23: fixing pin

24: Semicircular guide 25: Locking cam 25 ': Lever

26: Slider 26 ': Jamming groove 26: Handle

27: guide 30: frame folding structure 31, 31 ': support

32: Support 32 ': Folded jaw 33: Fixing pin

34: Operator 35: Locking Cam 35 ': Lever

36: Bracket 37: Slider 37 ': Jamming groove

37: handle 40: pedal folding structure 41: groove

42: pedal bracket 42 ': curved portion 42: flat portion

43: holding pin 44: folding control port 44 ': handle

45: bullet spring 46: guide builder 47: fitting groove

50: pedal rotation structure 51: fixed rotation limit jaw 52: short pipe

53: movable turning limit 54: pedal support shaft 55: ball

56,56 ': Seating groove 57: Leaf spring 60: Stand structure

61: stand support 61 ': distribution hole 61: anti-rotation groove

62: stand bracket 62 ': operating rod 63: nut

64: Ball spring 65: Short pipe pin 66,66 ': Support angle

67,67 ': Spring jamming 68: Torsion spring

Referring to the configuration of the present invention in detail based on the accompanying drawings as follows.

The present invention is a bicycle of a known structure in which the handle shaft (1) and the saddle support (3) is installed in the head tube (2) and the saddle tube (4) to be elevated;

To restrain the elevating of the handle shaft (1), the saddle support (3) and the saddle tube (4) at an arbitrary position on the outer circumferential surface of the handle shaft (1), the saddle support (3) and the saddle tube (4). One or more ball seating grooves 11 and the plate springs 13 inserted into the recesses are formed at positions opposite to the ball set grooves 12 and the ball seating grooves 11 to which elastic pressing force in one direction is applied. The locking cam fastening groove 14, the head tube 2, the saddle tube 4 and the upper end of the longitudinal frame (f1) using the bracket 15 and the fixing pin 16 is rotatably arranged and the lever ( A locking structure (10a) (10b) (10c) configured to include a locking cam (18) which is selectively inserted into and removed from the locking cam fastening groove (14) by the operation of 17);

In order to selectively pivot the head tube 2 which is separately separated on the support tube 22 'of the fork 22 of the bicycle, the upper end side of the support tube 22' of the fork 22 of the bicycle and the Brackets 21 and 21 'fixedly installed on one side of the lower end of the head tube 2 separated from the support tube 22' and coupled to each other by a fixing pin 23, and the head tube 2 and Rotatingly spaced between the semicircular guide hole 24 and the brackets 21 and 21 'formed in a state of sharing the contact portion of the support tube 22', the operation of the lever 25 ' The locking cam 25 to be selectively inserted into and removed from the guide hole 24 and the handle 26 and the locking cam 25 protruding to the outside through the guide hole 27 drilled into the head tube 2. ) Is provided with a locking groove (26 ′) that is selectively coupled to the first and the rotation of the head tube (2) while moving within the range of the guide hole (27) Head tube folded structure (20) comprises a slider (26) to the;

Semi-circular support pieces 31 and 31 ′, which are spaced apart at predetermined intervals, respectively covering one side surfaces of the bilaterally divided bicycle frames f2 and f3, and the transverse frame f2. (f3) both ends of the support pieces (31) (31 ') using fixing pins (33) at both ends of the lateral frame (f2) (f3) at equal lengths with the other side of the circumferential frame wrapped around the other side. A semicircular support 32 which is rotatably coupled and includes a folding limiting jaw 32 ′ which restricts the folding angle when the transverse frames f2 and f3 are folded at the front surface, and the support 32 A semicircular guide hole 34 formed in the state of perforation while sharing the contact portions of the respective transverse frames f2 and f3,

The locking cam 35 is pivotally arranged on the bracket 36 fixed on the support 32 and is selectively inserted into or removed from the guide hole 34 by the operation of the lever 35 '. The guide hole 38 is provided with a handle 37 protruding outward through the guide hole 38 drilled in the transverse frame f2 and a locking groove 37 'that is selectively coupled with the locking cam 35. A frame folding structure (30) configured to be coupled by a slider (37) for controlling the rotation of the lateral frames (f2) and (f3) while moving within a range of;

The groove 41 is formed at a predetermined depth at the bottom of the crank c of the bicycle so as to have an inner surface on a vertical line, and is integrally formed with a pedal p separately configured from the crank c. A pedal bracket 42 having a curved portion 42 ′ and a flat portion 42 to be pivotally coupled to the groove 41 and having a rotation range within a right angle, and a guide hole 46 drilled into the crank c. It is provided with a handle 44 'protruding to the outside through a) and is provided to be movable to the crank (c) in a state in which the elastic force in one direction is given by the spring spring 45, the front end of the pedal bracket 42 is fitted A pedal folding structure (40) comprising a folding control tool (44) for controlling the folding of the pedal (p) according to the coupling selection with the groove (47);

Fixed rotation limit jaw 51 and integrally installed on the inner surface of the circular short pipe portion 52 formed at the bottom of the crank (c) of the bicycle and composed of 4/1 of the circumferential surface of the short pipe portion, and the short pipe portion 52 Pedal support shaft (54) integrally provided on the outer circumferential surface of the outer circumferential surface of the movable circumference limiting jaw (51) configured to be rotatably fitted in the inside and having the same length as the fixed rotational limit (51) ), The seating grooves 56 and 56 'of the ball 55 formed to be recessed to face the pedal support shaft 54, and the pedal 55 by applying an elastic pressing force in one direction to the ball 55. A pedal turning structure (50) comprising a leaf spring (57) for suppressing an endless change of the position of the pedal spring;

Fixed to the lower end of the saddle tube (4) is integrally formed with a distribution hole (61 ') and a center of rotation inhibiting groove (61) formed in a recess in the bottom shape in a state connected to the distribution hole (61') It is formed integrally with the stand support 61 provided, the operation rod 62 'fitted to the lifting hole (61') and the lower end thereof, and selectively fitted into the rotation inhibiting groove (61) on the upper surface. The stand bracket 62 is provided between the plate-shaped stand bracket 62 having an insertion portion 62, and the nut 63 fastened to the upper end of the operation rod 62 'and the stand support 61. A pair of support angles 66 (66 ') pivotally arranged on both sides of the stand bracket (62) by using a spring spring (64) and a hollow end tube pin (65) for imparting upward lift force to the stand bracket (62). And, it is located in the inner tube pin (65) and both ends are caught by the spring engaging projection (67) (67 '), respectively, the support angle (66) (66') A torsion spring stand structure 60 is configured including 68 for imparting the force of the beolrim outward respectively in each 66, 66 'to the hayeoseo coupled configuration each.

※ Unexplained code in the drawing ※

(70) is the handle and (71) is the saddle.

Referring to the operation of the present invention configured as described in detail as follows.

The present invention is applied as in Figure 1, Figure 1 shows a non-folded state.

In this state, the levers 17 for operating the locking cams 18, 25 and 35 of the locking structures 10a, 10b and 10c, the head tube folding structure 20 and the frame folding structure 30 are provided. , 25 ', 35' are erected up as shown in Figs. 2 (a), 3 (a) and 4 (e) so that the locking cam 17 is fitted into the locking cam fastening groove 14 to (1) restraint,

The locking cam 25 is fitted into the guide hole 24 and the locking groove 26 'to restrain the head tube 2, the support tube 22' of the fork 22, and the slider 26.

The locking cam 35 is inserted into the guide hole 34 and the locking groove 37 'to restrain the support 32, the horizontal frame f2, f3, and the slider 37, respectively.

The bearing angles 66 and 66 'are in a state in which the saddle tube 4 is lifted and forcibly folded in the longitudinal frame f1 in relation to being raised.

In order to move or store the bicycle in the normal non-folding state as described above, it is folded as shown in FIG. 8 to reduce the volume of the bicycle. no.

First, in order to immerse the handle shaft 1, the lever 17 of the locking structure 10a is lowered so that the locking cam 18 is separated from the locking cam fastening groove 14 to release the restraint of the handle shaft 1. Then lower the handle shaft (1) to immerse it into the head tube (2),

In such a state that the handle shaft 1 is immersed in this manner, the handle shaft 1 is turned to allow the handle 70 to stand vertically.

On the other hand, the position setting ball 12 when the handle shaft 1 is lowered is pushed out of the ball seating groove 11 and then refitted to the next ball seating groove 11. The state where the ball 12 is fitted into the ball seating groove 11 is a position where the locking cam fastening groove 14 of the handle shaft 1 is exactly coincident with the position of the locking cam 18 so as to completely immerse the handle shaft 1. In the case of simply adjusting the height without making the adjustment, the sense or sound of the position setting ball 12 to be inserted into the ball seating groove 11 is the locking cam fastening groove 14 of the handle shaft 1 of the locking cam 18. It will have the function of a kind of position sensor that will tell you that you have reached the exact position.

On the other hand, since the structure of the remaining locking structure (10b) (10c) is also configured in the same way as the locking structure (10a) above, the length reduction process of the saddle support (3) and the saddle tube (4) is also reduced in length The process is the same as the process, and further description will be omitted.

In order to fold the transverse frames f2 and f3 in this state, the locking cam 35 is turned by first turning the locking cam 35 by raising the lever 35 'as shown in FIGS. 4 (b) and 4 (e). The guide hole 34 and the engaging groove 37 'of the slider 37 are released to release the restraint of the transverse frames f2 and f3 and the slider 37 from the support 32, and then the slider 37 Move the handle 37 of the guide hole 38 to the outer end of the guide hole 38 so that the end of the slider 37 is completely immersed into the transverse frame f2, thereby mutually engaging the transverse frames f2 and f3. After releasing and folding both transverse frames f2 and f3 inward, they are folded about in a parallel state as shown in FIG. 8 while being rotated about the fixing pin 33.

Meanwhile, in order to fold the head tube 2 in this state, the locking cam 25 is guide hole 24 by lowering the lever 25 'and turning the locking cam 25 as shown in FIG. And out of the locking groove 26 'of the slider 26, and then move the knob 26 of the slider 26 to the upper end of the guide hole 27 so that the lower end of the slider 26 has the head tube 2 After releasing the coupling between the head tube 2 and the support tube 22 'of the fork 22 by completely immersing the inside, the head tube 2 is flipped and rotated around the fixing pin 23. It is folded as shown in FIG.

In addition, the two pedals p and p 'are required to be folded and rotated in order to effectively reduce the volume. In order to first fold the pedals, as shown in FIG. 44 '), the folding control tool 44 is released from the fitting groove 47 of the pedal bracket 42 to release the restraint, and then rotates the pedal p toward the crank c. At the same time as the plane portion 42, which is in contact with the c), the curved portion 42 'is rotated and the pedal p is folded in parallel with the crank c.

In addition, in order to rotate the pedal p ', as shown in FIG. 6 (a) and (b), simply hold the pedal p' and turn the pedal support shaft 54 of the bicycle. 53 is rotated by 180 degrees while the rotation is stopped while contacting the fixed rotation limiting jaw 51 in the rotated state by 180 degrees to convert the position of the pedal (p ') installed outward of the crank (c) inwardly When folding the bike, the volume is reduced.

Finally, the process of folding the stand for supporting the bicycle in the standing position is as follows.

As shown in FIG. 1, when the saddle tube 4 is pulled out from the longitudinal frame f1 so as to ride a bicycle, the interior of the longitudinal frame f1 is in a state where the support angles 66 and 66 'of the stand are forcibly folded. Located in

In this state, when the saddle tube 4 is lowered and immersed to support the bicycle, the stand structure 60 fixed to the lower end thereof is pushed to the lower end of the longitudinal frame f1 and the saddle tube 4 is completely moved. When immersed, the support angles 66 and 66 'are opened outwardly by the torsion springs 68 as shown in FIG. 7 (a) (b), so that the bicycle can be supported.

In this state, when the saddle 71 is completely immersed so that the saddle 71 contacts the top of the saddle tube 4 in order to fold the bicycle, the bottom of the saddle base 3 may have a nut (as shown in FIG. 7C). 63) by pressing down the stand bracket 62 so that the inserting portion 62 is separated from the rotation restraint groove 61 of the stand support 61, and forcibly parallels the opened support angles 66 and 66 '. Fold it up in the transverse direction, and then use a separate hook or tie-down member such as a string to tie it in the longitudinal frame (f1) or transverse frame (f2) (f3).

As described above, when the respective parts are folded through the above-described process, the volume can be reduced in the shape as shown in FIG.

The present invention as described above, by improving the structure of the handle shaft, head tube, longitudinal, horizontal frame, saddle support, saddle tube, stand, pedals, etc. to be folded over almost all parts of the bicycle, thereby significantly reducing the volume of the bicycle It is possible to make it convenient to carry and store, and because the stand is normally immersed in the inside of the bell frame and concealed, it can show the simplicity of appearance and increase the competitiveness by increasing the use effect of the bicycle. Will be.

Claims (1)

In the bicycle of the known structure in which the handle shaft (1) and the saddle support (3) are installed in the head tube (2) and the saddle tube (4) so as to be elevated; To restrain the elevating of the handle shaft (1), the saddle support (3) and the saddle tube (4) at an arbitrary position on the outer circumferential surface of the handle shaft (1), the saddle support (3) and the saddle tube (4). One or more ball seating grooves 11 and the plate springs 13 inserted into the recesses are formed at positions opposite to the ball set grooves 12 and the ball seating grooves 11 to which elastic pressing force in one direction is applied. The locking cam fastening groove 14, the head tube 2, the saddle tube 4 and the upper end of the longitudinal frame (f1) using the bracket 15 and the fixing pin 16 is rotatably arranged and the lever ( A locking structure (10a) (10b) (10c) configured to include a locking cam (18) which is selectively inserted into and removed from the locking cam fastening groove (14) by the operation of 17); In order to selectively pivot the head tube 2 which is separately separated on the support tube 22 'of the fork 22 of the bicycle, the upper end side of the support tube 22' of the fork 22 of the bicycle and the Brackets 21 and 21 'fixedly installed on one side of the lower end of the head tube 2 separated from the support tube 22' and coupled to each other by a fixing pin 23, and the head tube 2 and Rotatingly spaced between the semicircular guide hole 24 and the brackets 21 and 21 'formed in a state of sharing the contact portion of the support tube 22', the operation of the lever 25 ' The locking cam 25 to be selectively inserted into and removed from the guide hole 24 and the handle 26 and the locking cam 25 protruding to the outside through the guide hole 27 drilled into the head tube 2. ) Is provided with a locking groove (26 ′) that is selectively coupled to the first and the rotation of the head tube (2) while moving within the range of the guide hole (27) Head tube folded structure (20) comprises a slider (26) to the; Semi-circular support pieces 31 and 31 ′, which are spaced apart at predetermined intervals, respectively covering one side surfaces of the bilaterally divided bicycle frames f2 and f3, and the transverse frame f2. (f3) both ends of the support pieces (31) (31 ') using fixing pins (33) at both ends of the lateral frame (f2) (f3) at equal lengths with the other side of the circumferential frame wrapped around the other side. A semicircular support 32 which is rotatably coupled and includes a folding limiting jaw 32 ′ which restricts the folding angle when the transverse frames f2 and f3 are folded at the front surface, and the support 32 A semicircular guide hole 34 formed in the state of perforation while sharing the contact portions of the respective transverse frames f2 and f3, The locking cam 35 is pivotally arranged on the bracket 36 fixed on the support 32 and is selectively inserted into or removed from the guide hole 34 by the operation of the lever 35 '. The guide hole 38 is provided with a handle 37 protruding outward through the guide hole 38 drilled in the transverse frame f2 and a locking groove 37 'that is selectively coupled with the locking cam 35. A frame folding structure (30) configured to be coupled by a slider (37) for controlling the rotation of the lateral frames (f2) and (f3) while moving within a range of; The groove 41 is formed at a predetermined depth at the bottom of the crank c of the bicycle so as to have an inner surface on a vertical line, and is integrally formed with a pedal p separately configured from the crank c. A pedal bracket 42 having a curved portion 42 ′ and a flat portion 42 to be pivotally coupled to the groove 41 and having a rotation range within a right angle, and a guide hole 46 drilled into the crank c. It is provided with a handle 44 'protruding to the outside through a) and is provided to be movable to the crank (c) in a state in which the elastic force in one direction is given by the spring spring 45, the front end of the pedal bracket 42 is fitted A pedal folding structure (40) comprising a folding control tool (44) for controlling the folding of the pedal (p) according to the coupling selection with the groove (47); Fixed rotation limit jaw 51 and integrally installed on the inner surface of the circular short pipe portion 52 formed at the bottom of the crank (c) of the bicycle and composed of 4/1 of the circumferential surface of the short pipe portion, and the short pipe portion 52 Pedal support shaft (54) integrally provided on the outer circumferential surface of the outer circumferential surface of the movable circumference limiting jaw (51) configured to be rotatably fitted in the inside and having the same length as the fixed rotational limit (51) ), The seating grooves 56 and 56 'of the ball 55 formed to be recessed to face the pedal support shaft 54, and the pedal 55 by applying an elastic pressing force in one direction to the ball 55. A pedal turning structure (50) comprising a leaf spring (57) for suppressing an endless change of the position of the pedal spring; Fixed to the lower end of the saddle tube (4) is integrally formed with a distribution hole (61 ') and a center of rotation inhibiting groove (61) formed in a recess in the bottom shape in a state connected to the distribution hole (61') It is formed integrally with the stand support 61 provided, the operation rod 62 'fitted to the lifting hole (61') and the lower end thereof, and selectively fitted into the rotation inhibiting groove (61) on the upper surface. The stand bracket 62 is provided between the plate-shaped stand bracket 62 having an insertion portion 62, and the nut 63 fastened to the upper end of the operation rod 62 'and the stand support 61. A pair of support angles 66 (66 ') pivotally arranged on both sides of the stand bracket (62) by using a spring spring (64) and a hollow end tube pin (65) for imparting upward lift force to the stand bracket (62). And, it is located in the inner tube pin (65) and both ends are caught by the spring engaging projection (67) (67 '), respectively, the support angle (66) (66') Each 66 of the folding device to a bicycle (66), respectively that are coupled hayeoseo configure the stand structure (60) comprises a torsion spring 68 for imparting a force of beolrim outwardly as the feature.