JPH08282569A - Folding structure of handle post - Google Patents

Abstract

PURPOSE: To prevent a slippage by the oscillation of a connecting body, by screwing a cam lever having a presser fastening function by raising a stopper shaft, and a slide pin inserted to the side part of a lower plate, whose front end can be inserted to and removed from the side part of an upper plate, and squeezed elastically by a spring, to a presser frame. CONSTITUTION: A connecting body has cylindrical slide pins 17 screwed by fixing screws 20 at both sides at the rear part of a presser frame 3 provided in a holder 23. To an upper presser plate 21, a cam lever 25 which consists of a quick lever 27 connected to an eccentric cam 28 to fix an upper lug and a lower lug is provided. And the connecting body is fixed and held by the pressing force by the springs 19 of the slide pins 17, and the fastening force of the eccentric cam 28 by the turn of the quick lever 27. Consequently, the fixation is never loosened by the oscillation of a bicycle in the traveling condition, and the bicycle can run safely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for folding a handle post in a bicycle, and in particular, the handle post is erected by simply tightening the lever through a connecting member by simply raising and lowering the lever. The present invention relates to a folding structure of a handle post, which can be operated or an operation of folding a handle post by unfastening a connecting body and improving the bonding strength of a folding connection portion.

[0002]

2. Description of the Related Art Bicycles are easily used as a means of transportation in the neighborhood for shopping or to a station, and the number of bicycles is rapidly increasing year by year. For this reason, they cannot be accommodated in front of the station, in the shopping areas and in the bicycle parking lots of supermarkets, and they overflow to the roads, obstructing traffic. Further, it cannot be accommodated even in a bicycle parking lot of a house, a condominium or an apartment without a bicycle parking lot, and the bicycles are brought into a corridor or aisle of the building to be parked, which is an obstacle for walking.

Furthermore, since the number of parking lots for automobiles is not sufficient and it is difficult to secure a parking lot in the vicinity, a bicycle parked at a car parked in a distant parking lot is used. Many cases have been found to be stored in the trunk of automobiles.

In view of these problems, the bicycle frame, the handlebars, and the pedals have a folding structure to reduce the occupied area of the bicycle itself and to effectively use the space of a bicycle parking lot or a trunk room of an automobile. ,
To that end, many proposals have been made. In particular, since the width and height of the bicycle are determined by the size of the handle, a proposal for a folding structure of the handle is disclosed in the gazette and the like.

For example, there is a structure disclosed in Japanese Utility Model Laid-Open No. 63-122148. This is a rotating disk with a handle sandwiched on a fixed disk formed on the handle post so that it can be rotated, and the rotating disk is pulled up and rotated to engage the bolt with the hole. The handlebar is parallel to the front-back direction of the car body.

However, since the width of the handle is reduced by rotating the handle bar, this is effective in reducing the occupied area in the bicycle parking lot, but is housed in the trunk room of the automobile as described above. In this case, the height of the handle cannot be lowered, which causes a problem that it cannot be stored in the trunk room of the automobile.

By the way, as a means for solving the problem of storage in the trunk room of this automobile, the actual construction of Sho 63-152
There is a technique proposed for a configuration disclosed in Japanese Patent Publication No. 790. As shown in FIG. 12, in this prior art, the movable posts 41 are provided at the respective post ends of the movable post 41 on the handle side and the fixed post 42 on the wheel side.
A short tubular rotary shaft 43 extending horizontally from the vertical axis of the post shaft by 90 degrees, and a lug 44 externally fitted on the post shaft of the fixed post 42 extending horizontally by 90 degrees and having a short C-shaped cross section at the tip. , The tubular rotation shaft 43 of the movable post 41 is fitted into the lug 44 having a C-shaped cross section of the fixed post 42 so that the movable post 41 can be rotated with respect to the fixed post 42.
When the cam lever 47 having the fastening shafts 46 inserted into the upper and lower fastening pieces 45, 45 extending horizontally from the open end of the lug 44 having the C-shaped cross section of 2 is rotated,
The inner diameter of 4 is enlarged, the tightening force of the rotating shaft 43 is released, and the rotation preventing pin 48 is pulled out from between the tightening pieces 45, 45, so that the rotating post 41 can freely rotate. By the way, since the rotary shaft 43 is disposed in an oblique direction with respect to the frame, the movable post 41 is
Rotates diagonally and the handlebar rotates 90 degrees to swing its head, so that the handlebar is folded in parallel with the vehicle body.

However, even in this prior art, the movable post 41 is mounted on the end of the rotary shaft 43, and the rotary shaft 43 tightens the lug 44 and prevents the rotation pin 4.
Since the fixed post 42 and the movable post 41 are connected to each other in a manner that prevents the movable post 42 from rotating in step 8, the vertical and horizontal vibrations and stresses that occur when the bicycle is running act on the connected post. The part of the vehicle rattles in the vertical direction or the horizontal direction to enter a play state, which causes a safety problem during traveling.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art in the folding structure of the handlebar post of the bicycle, and more particularly, to make the handlebar parallel to the body frame by the rotating shaft. In the folding structure of the handlebar of a bicycle that can be folded, by combining the pressing system and the tightening system and organically combining these systems, the handlebars that can be folded in two can be securely and securely fixed. It is a technical subject to prevent the displacement of the connected body due to the vibration.

[0010]

According to a first aspect of the present invention, there is provided an upper handle post for supporting a handlebar of a bicycle at an upper portion thereof and a front wheel at a lower portion thereof. It is divided into a lower handle post and is attached to the lower end of the upper handle post and is attached to the upper end of the horizontal upper plate that is pivotally supported at one end so that it can rotate like a hinge. The horizontally supported lower plate part, the upper lug on the other end side of the upper plate part that is connected to the opposite side of the shaft support side, and the lower lug on the other end side of the lower plate part can be inserted by superimposing A stopper body is formed of a holding frame having a holder portion and vertically extends through the center of the upper and lower plates of the holding frame, and a cam lever portion for tightening the holding frame by pulling up the stopper shaft provided on the holding frame. , Inserted in the lower plate side Re tip is folding of the handle post, characterized in that are screwed to the frame holding the Tamabachi pressed slides pin insertion and removal possible and spring plate portion side.

According to a second aspect of the present invention, in the means of the first aspect, the cam lever portion for tightening the holding frame is eccentric by the rotatable quick lever and the rotation of the quick lever, and the holding frame is tightened by pulling up the stopper shaft. It is a folding structure of the handle post, which is characterized by comprising an eccentric cam that performs

According to a third aspect of the present invention, in the means of the first or second aspect, the tip end of the slide pin is inserted into and removed from the upper plate portion side portion by the pressing frame side of the downward side arm of the upper plate portion side portion. It is a folding structure of a handle post, characterized in that the handle post is inserted into and removed from a locking hole formed in a facing lower slope portion and a fixing hole formed in a downward side arm opposite to the locking hole.

According to a fourth aspect of the present invention, in any one of the first to third aspects, a U-shaped stopper groove is formed in the center of the tip of the upper lug and the lower lug to be inserted into the holder. Folding structure of the handle post.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the attachment angle of the upper plate portion and the lower plate portion to the upper handle post and the lower handle post is 45.
The handle post folding structure according to any one of claims 1 to 4, wherein the handle post is rotated from the front.

[0015]

In the folding structure of the handle post of the present invention, the handle post is divided into an upper handle post having a handle bar at the upper end and a lower handle post having a front wheel at the lower end,
The horizontal upper plate attached to the lower end of the upper handle post and the horizontal lower plate attached to the upper end of the lower handle post are pivotally supported at one end so that they can rotate like a hinge, so the handle can be folded. The height can be lowered. In addition, the upper lug on the other end of the upper plate and the lower lug on the other end of the lower plate can be inserted into the press frame by superimposing them, and the stopper lever shaft of the inserted lug can be As the ram is pulled up, the clamping force acts on the holding frame, and the inserted ram does not rattle due to running. Also, since the tip of the slide pin screwed to the holding frame is removably inserted into the lower plate side and the upper plate side and elastically pressed by the spring, pressing force acts on the upper plate, It is safe because it is fixed without rattling when traveling. Since the cam frame is composed of a quick lever and an eccentric cam that can rotate the cam frame, the clamp frame can be tightened easily by pulling up the stopper shaft by rotating the quick lever. It is also excellent. Further, by pulling the holding frame rearward, the upper plate portion and the lower plate portion can be easily inserted and removed from the holding frame.

An engaging hole for inserting / removing the tip of the slide pin into / from the upper plate portion side is formed in a lower slope portion of the upper plate side portion facing the holding frame side of the downward side arm and the engaging hole. Since it is performed by a fixing hole formed in the lower side arm on the opposite side, the tip of the slide pin moves by sliding on the lower slope portion of the lower side arm of the upper plate side,
It can be done smoothly.

Since the U-shaped stopper groove is formed at the center of the tips of the upper and lower lugs to be inserted into the holder, the tips of the upper and lower lugs engage with the stopper shaft to secure the fixing. Become.

Since the mounting angles of the upper handle portion and the lower handle portion on the upper handle portion and the lower handle portion are rotated from the front by 45 degrees, when the upper handle post is folded, the handlebar becomes parallel to the vehicle body and is parked. Reduce the wheel space.

[0019]

Embodiments of the present invention will now be described in detail with reference to the drawings.
1 is a plan view of the present invention shown in a partially broken cross section, FIG. 2 is a front view showing a part of the cross section taken in the XX direction, and FIG. 3 is a cross section taken in the YY direction of FIG. It is a front view which shows a part. FIG. 4 is a front view showing a folded state in FIG. FIG. 5 is a perspective view showing a state in which the upper and lower handle posts are erected and fixed, FIG. 6 is a perspective view showing a state in which the quick lever is returned to loosen the holding frame and the upper and lower plate portions are removed, and FIG. 7 is an upper handle post. FIG. 8 is a perspective view in which the upper handle post is further tilted, and FIG. 9 is a perspective view in which the upper handle post is completely tilted. 10 is a perspective view showing a standing state of a handle post of a folding bicycle to which the connecting body A of the present invention is applied, and FIG. 11 shows a state in which the handle post of a folding bicycle to which the connecting body A of the present invention is applied is folded. It is a perspective view.

In these figures, reference numeral 4 denotes an upper handle post of the bicycle, and a handle bar 35 is attached to the upper portion thereof. Reference numeral 5 is a lower handle post of the bicycle, and a front wheel 36 is attached to the lower portion thereof. These upper and lower handle posts 4, 5 are movably connected by a connecting body A composed of an upper plate portion 1, a lower plate portion 2 and a holding frame 3 to form a handle post H. The upper plate portion 1 has a substantially convex shape and has an upper lug 6 which is lowered by one step at its central tip and downward side arms 8 and 8 on both sides. The lower plate portion 2 is a central lower lug 7 and both side portions. It has upward side arms 9, 9. A U-shaped upper stopper groove 31 and a lower stopper groove 32 are formed at the centers of the tips of the upper lug 6 and the lower lug 7, respectively. An upper handle post 4 extending upward is disposed on the upper plate portion 1, and a lower handle post 5 extending downward is vertically provided on the lower plate portion 2. Since the rotary shaft 13 is rotatably mounted through the shaft hole 12 formed at one end of the upper plate portion 1 and the bearing portion 14 at one end of the lower plate portion 2, the upper plate portion 1 and the lower plate portion 2 are attached. Has a hinge structure in which one end of each is openable and closable with respect to each other.

The bearing portion 14 provided at one end of the lower plate portion 2
The upper plate portion 1 faces the facing downward side arms 8 so as to sandwich
8 and these downward side arms 8, the upper slope portion 11 of 8,
11 includes locking holes 15 and 15 into which two pairs of slide pins 17 and 17 described below are inserted when the connecting body A is closed.
Fixing holes 30 and 30 to be inserted when the connecting body A is opened are provided on the back portions of the downward side arms 8 and 8, respectively. When the upper slope portions 11 and 11 close the lower slope portions 10 and 10 in which the guide holes 16 and 16 are formed in the upward side arms 9 and 9 of the lower plate portion 2 to be described later and the connecting body A, It is finished on the inclined surface that is in close contact.

On the other hand, the lower handle post 5 connected to the lower plate portion 2 has a head tube 4 having a front wheel 36 at its lower portion.
0, and a slide bar (not shown) screwed into the pull-up rod 34 of the conventional means and the threaded portion at the lower end of the pull-up rod is pulled up by the rotation of the pull-up rod 34 and one side of the slide die is attached to the inner surface of the head tube 40. It is fixed to the head tube 40 by pressing the side surface of the.

Guide holes 16, 16 through which slide pins 17, 17 are inserted are formed in the lower slope portions 10, 10 of the upper side arms 9, 9 of the lower plate portion 2 described above. The slide pins 17, 17 are fitted on the outer peripheral surfaces of the pin shafts 18, 18 as biasing means for constantly pressing the slide pins 17, 17 in the direction of the locking holes 15, 15 of the downward side arms 8, 8 of the upper plate portion. The mounted coil spring 19 is internally provided.

The connecting body A has a holding frame 3 having therein a holder portion 23 having a space for accommodating the upper lug 6 and the lower lug 7 when the upper plate portion 1 and the lower plate portion 2 are closed. Cylindrical slide pins 17 screwed by fixing screws 20 on both sides of the rear portion (right side in FIG. 3) of the holding frame 3,
Have 17. The upper pressing plate 21 on the upper surface of the pressing frame 3 has an upper lug 6 for preventing the slide pins 17, 17 from sliding.
Also, a cam lever portion 25 composed of a quick lever 27 connected to an eccentric cam 28 for fixing the lower lug 7 is provided, and a stopper shaft 24 penetrates between the lower support plate 22 of the lower surface portion of the holding frame 3. A nut 26 is screwed onto the lower end of the stopper shaft 24.

In FIGS. 1 and 5, the quick lever 27 is constructed so that the eccentric cam 28 pulls the stopper shaft 24 upward. On the other hand, in FIGS. 4 and 6 to 9, the end portion of the quick lever 27 is raised and then tilted to the front, and the quick lever 27 is turned upside down. The cam 28 is rotated and the eccentric cam 28 pulls the stopper shaft 24 downward.

As described above, the U-shaped upper stopper groove 31 and the lower stopper groove 32 that engage with the stopper shaft 24 are formed in the central portions of the upper lug 6 and the lower lug 7,
These upper and lower stopper grooves 31, 32 function as positioning of the upper and lower lugs 6, 7 when closing the upper plate portion 1 and the lower plate portion 2.

In the present invention, the connecting body A is shown in FIGS.
As shown in FIG. 1, the upper and lower lugs 6 of the connecting body A can be installed by installing the vehicle at an angle of about 45 degrees with respect to the vehicle body.
When 7 is opened and the handle post H is folded, the vehicle body and the handle bar 35 are parallel to each other. When folding the handle post H designed in this way, first, the quick lever 27 is moved in the releasing direction to release the tightening force of the holding frame 3 against the upper and lower lugs 6, 7. Next, in order to remove the stopper shaft 24 from the upper and lower stopper grooves 31 and 32 formed in the central ends of the upper and lower lugs 6 and 7,
Slide the pin 1 against the force of the coil spring 19 by placing fingers on the finger hooks 33, 33 provided on both sides of the holding frame 3.
By moving laterally along the axis of 7, 17 (moving to the right in FIG. 6), from inside the holder portion 23 of the pressing frame 3, the upper and lower lugs 6,
Put 7 out. At this time, the slide pins 17, 17 also come out of the locking holes 15, 15 of the downward side arms 8, 8 of the upper plate 1. Then, when the upper handle post 4 is rotated to the left side in the drawing, the tip ends of the slide pins 17, 17 slide on the downward sloped arms 11, 11 of the upper plate portion 1 and the locking holes 15,
The rotation is completed by fitting into the fixing holes 30, 30 formed on the opposite side of 15. At this time, the upper plate portion 1 and the lower plate portion 2 are in a straight line state, the upper handle post 4 is inverted, and the handle bar 35 is fixed and folded in a state parallel to the vehicle body.

Next, in order to set the folded upper handle post 4 to the standing state, that is, the riding position, the pressing frame 3 is put on the finger hooks 33, 33 and the slide pin is resisted against the force of the coil spring 19. The tip ends of the slide pins 17 and 17 are pulled out from the fixing holes 30 and 30 by laterally moving (moving to the right in FIG. 9) along the axes of the 17 and 17. When the upper handle post 4 is rotated so as to be raised in this state, the slide pins 17, 17 slide on the surfaces of the lower side arms 8, 8 of the upper plate 1 and the upper sloped portions 11, 11 to lock the locking holes 15. , 15
Head to. Upper slope portion 1 of the downward side arms 8 of the upper plate portion 1
1, 11 and the lower plate portion 2 of the upper side arms 9, 9 of the lower slope portion 1
Slide pins 17 and 1
7 is fitted into the locking holes 15 and 15 by the pressing force of the coil spring 19. At the same time, the holder portion 23 in the holding frame 3
The upper and lower lugs 6 and 7 are housed with a fitting sound and are housed in the upper and lower lugs 6 and 7, and the upper and lower stopper grooves 3 are cut at the central ends of the upper and lower lugs 6 and 7.
1, 32 are fitted to the stopper shaft 24. Therefore, the quick lever 27 is reversely rotated to pull up the stopper shaft 24 by the eccentric cam 28, and the presser frame 3 is used to move the upper and lower lugs 6 and 7.
Hold and tighten. With this, the upper handle post 4 is erected and is in a riding posture.

[0029]

As described above, according to the folding structure of the handle post of the present invention, the handle post connecting body is fixed by the pressing force of the spring of the slide pin and the tightening force of the eccentric cam action by the rotation of the quick lever. Since it is held, the fixing does not loosen due to vibration during traveling of the bicycle, so that the bicycle can be safely driven. Further, when the handle post is folded, the handle bar is parallel to the vehicle body, so that the bicycle parking space can be saved without taking up space. In addition, the folding and assembling can be easily performed only by rotating the quick lever and pulling out the holding frame without using any tool, which is an excellent effect not seen in the conventional folding structure.

[Brief description of drawings]

FIG. 1 is a plan view of the present invention shown in a partially broken cross section.

FIG. 2 is a front view showing a part of a cross section taken along line XX of FIG.

3 is a front view showing a part of a cross section viewed in the YY direction in FIG. 1. FIG.

FIG. 4 is a front view showing a folded state in FIG.

FIG. 5 is a perspective view showing a state in which upper and lower handle posts are erected and fixed.

FIG. 6 is a perspective view showing a state where the quick lever is returned, the pressing frame is loosened, and the upper and lower plate parts are removed.

FIG. 7 is a perspective view in which an upper handle post is slightly tilted.

FIG. 8 is a perspective view in which the upper handle post is further tilted.

FIG. 9 is a perspective view of the upper handle post completely laid down.

FIG. 10 is a perspective view showing a standing state of a handle post of a folding bicycle to which the present invention is applied.

FIG. 11 is a perspective view showing a folded state of a handle post of a folding bicycle to which the present invention is applied.

FIG. 12 is a view showing a folding structure of a handle post according to the prior art.

[Explanation of symbols]

 1 Upper Plate 2 Lower Plate 3 Holding Frame 4 Upper Handle Post 5 Lower Handle Post 6 Upper Lug 7 Lower Lug 8 Downward Side Arm 9 Upward Side Arm 10 Lower Slope 11 Upper Slope 12 Shaft Hole 13 Rotation Shaft 14 Bearing 15 Locking hole 16 Guide hole 17 Slide pin 18 Pin shaft 19 Coil spring 20 Fixing screw 21 Upper pressing plate 22 Lower supporting plate 23 Holder part 24 Stopper shaft 25 Cam lever part 26 Nut 27 Quick lever 28 Eccentric cam 29 Cam shaft 30 Fixing hole 31 Upper Stopper Groove 32 Lower Stopper Groove 33 Finger Hook 34 Pull Bar 35 Handlebar 36 Front Wheel 37 Main Frame 38 Pedal 39 Chain 40 Headtube H Handlepost A Connection

Claims (5)

[Claims] 1. A bicycle handle post is divided into an upper handle post carrying a handle bar on an upper part and a lower handle post having a front wheel on a lower part, and is attached to a lower end of the upper handle post and hingedly rotatable at one end. A horizontally supported upper plate and a horizontal lower plate that is attached to the upper ends of the lower handle posts and is pivotally supported at one end so that it can be hingedly rotated, and an upper plate that is connected to the opposite side of the shaft. The upper end lug of the other end of the lower plate and the lower lug of the other end of the lower plate are combined to form a connecting body, and the connecting frame is formed vertically in the center of the upper and lower plates of the pressing frame. A penetrating stopper shaft, a cam lever part for tightening the holding frame by pulling up the stopper shaft provided on the holding frame, a lower plate side part, and a tip part that can be inserted into and removed from the upper plate side part and a spring. Slide pin that is pressed by Folding structure of the handle post, which is characterized by being screwed to the holding frame. 2. The pressing frame tightening cam lever portion comprises a rotatable quick lever and an eccentric cam which is eccentric by the rotation of the quick lever and acts to tighten the pressing frame by pulling up the stopper shaft. The folding structure for a handle post according to item 1. 3. The engagement and disengagement of the tip of the slide pin into and from the upper plate side of the upper plate is performed on the lower slope of the lower arm of the upper plate facing the holding frame side. The folding structure for a handle post according to claim 1 or 2, wherein the folding structure is inserted into and removed from a fixing hole formed in a downward side arm opposite to the stop hole. 4. The handle according to claim 1, wherein a U-shaped stopper groove is formed in the center of the tip of the upper lug and the lower lug to be inserted into the holder. Post folding structure. 5. The mounting angle to the upper handle post and the lower handle post of the upper plate portion and the lower plate portion is rotated by 45 degrees from the front, according to any one of claims 1 to 4. The folding structure of the handle post.