JPH085113Y2 - bicycle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a bicycle, and more particularly to a bicycle having a child-mounting chair arranged on a frame.

[Conventional technology]

Generally, bicycles are widely used because they are easy to handle and easy to use, unlike motorcycles with an engine. For example, it is used for commuting to school, commuting, shopping, cycling, etc., and the utility value of the bicycle is extremely high.

In order to put a small child on such a widely used bicycle, usually, a child-mounting chair made of plastic or the like is attached and fixed by hooking it on a handle through a metal fitting or the like. I am trying to put my child on.

However, since the child-mounting chair is directly attached to the handle, which is the operation portion of the bicycle, a load is likely to be applied to the handle, which makes it unstable. For this reason, it is difficult to drive stably with a child on it, and particularly when traveling on a road surface having many uneven portions, the handle is easily taken and is extremely dangerous.

In addition, since the frame is integrated in a normal bicycle, the distance between the child chair and the saddle is reduced. Therefore, for example, when the mother tries to ride a bicycle while the child is placed on the child-mounting chair, not only cannot the skirt be disturbed and the bicycle cannot be easily ridden, but also the handle is removed. Easy and cannot ride safely.

On the other hand, in order to load the bicycle on an automobile or the like, it is the current situation that the bicycle is usually loaded on the roof using a mounting member or the like. This is because the bicycle is not large enough to fit in the trunk of an automobile. For this reason, it takes a considerable amount of labor to load the bicycle on the roof of an automobile, which is extremely difficult for a woman or the like.

[Problems to be solved by the device]

Therefore, the present invention has been proposed in view of such conventional circumstances, and it is possible to attach a child-mounting chair without burdening the handle and to easily ride a bicycle with a child. It is an object of the present invention to provide a bicycle that can be run safely in this state.

Still another object of the present invention is to make it easy to carry in a trunk of an automobile or the like for easy carrying.

[Means for solving the problem]

MEANS TO SOLVE THE PROBLEM In order to achieve the said objective, the bicycle of this invention WHEREIN: The front wheel, the front wheel side frame which supports this front wheel rotatably and which has a pair of front wheel side connection frames, and the support frame of the said front wheel side frame in a height direction. An operation part including a pair of grips mounted via a handle post that is adjustable in expansion and contraction and provided with a pair of grip parts that are adjustable in expansion and contraction on the rear wheel side, a rear wheel, and the rear wheel of the pedal. A drive mechanism rotatable by a rotating operation, a saddle disposed above the drive mechanism and capable of expanding and contracting in a height direction, and supporting the rear wheel, the drive mechanism and the saddle, and the front wheel side frame. And a drive section including a rear wheel side frame having a pair of rear wheel side connection frames that are respectively connected to the operation section and the drive section. The wheel-side connecting frame and the rear-wheel-side connecting frame are connected to each other, and the front-wheel-side connecting frame and the rear-wheel-side connecting frame are connected so that the distance between the operating portion and the driving portion can be adjusted to expand and contract. One of the front wheel-side connecting frame or the rear wheel-side connecting frame and the three points of the supporting frame are detachably supported by a frame attaching portion so that the child-mounting chair can be attached.

[Action]

According to the bicycle of the present invention, the operating portion and the driving portion are integrated by connecting the front wheel side connecting frame of the front wheel side frame and the rear wheel side connecting frame of the rear wheel side frame. That is, since the bicycle according to the present invention is formed by connecting the operating portion and the driving portion, the bicycle can be easily miniaturized when carried.

Since the child-mounting chair is attached to these connecting frames, no load is applied to the handle for operating the front wheels. Therefore, the bicycle can be safely driven.

Further, since the child-mounting chair is detachably attached to the connecting frame, it can be removed when it is not necessary to carry a child.

The front wheel side connecting frame and the rear wheel side connecting frame connect the operation part and the driving part so that the distance between the operating part and the driving part can be expanded and contracted. Since it can be adjusted to expand and contract, each position can be adjusted according to the body of the operator who rides the bicycle, and the optimum position can be obtained.

In addition, since the distance between the operation unit and the drive unit is sufficiently large, the operator can easily ride the bicycle with the child on the child-mounting chair, and can safely drive the bicycle. It will be possible.

〔Example〕

Hereinafter, a specific embodiment to which the present invention is applied will be described with reference to the drawings.

The bicycle of the present invention, as shown in FIGS. 1 and 2, mainly includes a front wheel (1), a front wheel side frame (2) rotatably supporting the front wheel (1), and the front wheel side frame (2).
An operating part (4) comprising a handle (3) which is adjustable in expansion and contraction, a rear wheel (5) and a drive mechanism (6) which allows the rear wheel (5) to be rotated by a pedal rotation operation. A saddle (7) which is arranged above the drive mechanism (6) and is adjustable in expansion and contraction; and a rear wheel frame (8) which supports the rear wheel (5), the drive mechanism (6) and the saddle (7). And a drive unit (9) composed of the front wheel side frame (2) and the rear wheel side frame (8) are integrated.

The front wheel (1) has a front wheel side tire (12) made of rubber or the like attached to a front wheel side rim (11) supported by a plurality of front wheel side spokes (10). A rotation shaft (not shown) is provided at the center of the front wheel (1), and a front wheel support frame (13) that allows the front wheel (1) to rotate in the circumferential direction is attached to the rotation shaft. . Therefore, the front wheel (1) can rotate on the front wheel support frame (13) about the rotation shaft.
The front wheel support frame (13) is rotatably supported by the front wheel side frame (2) in the direction of arrow a in the figure. As a result, the front wheel (1) is likewise indicated by the arrow a in the figure.
Can be rotated in any direction. In addition, on a part of the outer peripheral surface of the front tire (12) near the front frame (2),
A mudguard (14) is arranged so as to cover the front tire (12).

The front wheel side frame (2) is, as shown in FIG.
For example, front wheel side connecting frames (2b), (2b) which are connected to the rear wheel side frame (8) and the support frame (2a) made of, for example, a pipe and supporting the front wheel supporting frame (13) and the handle (3). It has a structure having and. The front wheel side coupling frames (2b), (2b) are tilted at a predetermined angle with respect to the support frame (2a) and integrated with the support frame (2a). The front wheel side connecting frames (2b) and (2b) are bifurcated on the side connected to the rear wheel side frame (8) in order to stably dispose a child mounting chair described later on the frame. The structure is divided. This front bifurcated frame (2b),
In (2b), a plurality of frame length adjusting holes (2c) and (2c) are formed to allow the distance between the operation section (4) and the driving section (9) to be adjusted to be expanded and contracted. There is.

In this embodiment, the front wheel side connecting frame (2b) has a bifurcated structure, but the front wheel side connecting frame (2b) is
b) may have any structure as long as the child-mounting chair can be stably arranged on the frame, so that it may be, for example, one frame or a frame composed of a plurality of two or more. May be

On the other hand, the handle (3) is made of, for example, a pipe or the like and has a predetermined shape so as to be easily operated by an operator, and is attached to the support frame (2a) of the front wheel side frame (2) in the direction of arrow b in FIG. It is attached so that it can be stretched and adjusted. That is, a handle post (15) is attached to the support frame (2a) so as to be able to extend and contract infinitely, and the handle (3) is attached to the handle post (15) via a fastener (not shown) or the like. Is attached. Therefore, the height of the handle (3) can be adjusted steplessly by adjusting the handle post (15). The handle (3) is attached to the support frame (2
As the means capable of adjusting the expansion and contraction in a), a conventionally known technique can be used and may be appropriately selected and used. Also,
The angle of the handle (3) depends on the handle post (1
By loosening the fasteners attached to 5), it is possible to adjust steplessly.

Further, as shown in FIGS. 4 and 5, a grip portion (16) is attached to the handle (3).
The grip part (16) has a grip part (18) made of rubber or the like on the outer peripheral surface of a connecting pipe (17) made of a pipe or the like having an inner diameter large enough to allow the handle (3) to be inserted therein. It was done. In the vicinity of the end of the connecting pipe (17) on the side opposite to the grip (18), for fixing a grip part communicating with a plurality of handle length adjusting holes (3a) formed in the handle (3). A hole (17a) is provided. Then, the bolt (1) is inserted into the handle length adjusting hole (3a) and the grip fixing hole (17a) which are communicated with each other.
9) is inserted and a nut (20) is screwed into the bolt (19) to fix the handle (3) and the grip portion (16). Therefore, the grip portion (16) appropriately selects the plurality of handle length adjusting holes (3a) formed in the previous handle (3) and sets the grip portion fixing hole (17a) in the handle length. Adjusting holes (3a) to adjust bolts (19)
By screwing the nut and the nut (20), it is possible to easily adjust the expansion and contraction to the rear wheel (5) side. As a means for making the grip portion (16) expandable and contractible toward the rear wheel (5) side, a conventionally known technique can be used and may be appropriately selected and used.

A brake lever (21) for stopping rotation of the front wheel (1) and the rear wheel (5) is provided between the grip portion fixing hole (17a) of the connecting pipe (17) and the grip portion (18). ) Is attached via a lever mounting bracket (22).

In the operation portion (4) configured as described above, the front car (23) for mounting and placing luggage or the like is attached to the front wheel side frame (2) and the support frame (13), respectively, with the fittings (24), It is attached via (25), and the power generation lamp (26) is further attached to the front car (23).

On the other hand, the rear wheel (5) constituting the drive unit (9) is made of rubber or the like on the rear wheel side rim (28) supported by the plurality of rear wheel side spokes (27) like the front wheel (1). The rear tires (29) are attached. Above rear wheel (5)
Are rotatably supported by the rear wheel frame (8) made of the pipe or the like. That is, the rotating shaft (not shown) provided at the center of the rear wheel (5) is supported at the vicinity of one apex of the rear wheel side frame (8) having a substantially triangular shape. The rear wheel (5) is rotatable in the circumferential direction about the rotation shaft.

In addition, on a part of the outer peripheral surface of the rear tire (29),
After all, the mudguard (1
A mudguard (54) having the same function as 4) is arranged so as to cover the rear tire (29).

Further, the rear wheel (5) is provided in the vicinity of the other vertex having substantially the same height as the vicinity of the vertex where the rear wheel (5) of the rear wheel side frame (8) having the substantially triangular shape is supported. A drive mechanism (6) is supported which can be rotated by rotating the pedal (30). The drive mechanism (6) includes a large-diameter gear (31), a small-diameter gear (32) that rotates in conjunction with the large-diameter gear (31), and a small-diameter gear from the large-diameter gear (31). And a chain (33) which is a driving force transmitting means stretched over the gear (32). Therefore, when the pedal (30) is rotated, the small-diameter gear (32) rotates in conjunction with the large-diameter gear (31) and the rear wheel (5) rotates.

Further, at the top of the rear-wheel side frame (8) located above the drive mechanism (6) and having a substantially triangular shape, the rear-wheel side frame (8) is directed in the direction of arrow c in FIG. A saddle (7) that is adjustable in expansion and contraction is provided. That is, the seat post (34) is supported by the rear wheel side coupling frame (8) in a steplessly adjustable manner, and the saddle (7) is attached to the seat post (24) via a fastener not shown. Has been. Therefore, the height of the saddle (7) can be adjusted steplessly by adjusting the seat post (34). As a means for enabling the seat post (34) to be continuously extended and contracted to the rear wheel side frame (8), a conventionally known technique can be used and may be appropriately selected and used.

Further, as shown in FIG. 3 and FIG. 6, the front wheel side frame is provided in the rear wheel side frame (8) having a substantially triangular shape in the center between the saddle (7) and the drive mechanism (6). Rear wheel side connecting frames (8a) and (8a) connected to the front wheel side connecting frames (2b) and (2b) of (2) are provided, respectively. The rear wheel side connection frames (8a) and (8a) are
Similar to the front wheel side connecting frames (2b) and (2b), the side connected to the front wheel side connecting frames (2b) and (2b) is bifurcated, and the rear wheel side frame (which has the substantially triangular shape) ( It is integrated at the connection with 8). Further, the rear wheel side coupling frames (8a), (8a) are made of a pipe or the like having an inner diameter large enough to allow the front wheel side coupling frames (2b), (2b) to be inserted therein. Near the front ends of the rear wheel side coupling frames (8a) and (8a), a plurality of frame length adjusting holes (2c) and (2c) formed in the front wheel side coupling frames (2b) and (2b) are provided. Frame fixing holes (8b) and (8b) communicating with 2c) are formed respectively.

The drive unit (9) and the operation unit (4) thus configured are integrated by connecting the front wheel side connecting frames (2b), (2b) and the rear wheel side connecting frames (8a), (8a). Has been converted. That is, the rear wheel side connecting frame (8
a), (8a) in the front wheel side coupling frame (2b), (2
b) is inserted and the frame length adjustment holes (2c) and (2
c) and the frame fixing holes (8b), (8b) are made to communicate with each other, and the communicated frame length adjusting holes (2c),
(2c) and the holes (8b) and (8b) for fixing the frame to the bolts (3
5) is inserted and the nut (36) is used to connect the front wheel side connecting frames (2b), (2b) and the rear wheel side connecting frames (8a),
(8a) is connected, whereby the drive unit (9) and the operation unit (4) are integrated. Further, the front wheel side connecting frames (2b), (2b) and the rear wheel side connecting frames (8a), (8a)
Connection position, that is, the frame length adjustment hole (2
Only by changing the positions of c) and (2c), it is possible to easily adjust the distance between the operation section (4) and the drive section (9).

Incidentally, the means for making the front wheel side connecting frames (2b), (2b) and the rear wheel side connecting frames (8a), (8a) adjustable for expansion and contraction can use a conventionally known technique and can be appropriately selected and used. Good.

Further, one of the connecting frames in which the operation section (4) and the driving section (9) are integrated is one front wheel side connecting frame (2
On the b) and (2b), a child placing chair (37) for placing a child is arranged. Chair for children above (37)
Is integrally molded from plastic, etc.,
Belt mounting holes (39) and (39) for mounting a belt for fixing a child are provided in the backrest (38). A chair for detachably mounting the child-mounting chair (37) on the front wheel-side connecting frames (2b), (2b) is attached to the bottom surface (40) of the child-mounting chair (37). The mounting bracket (41) is attached. The chair mounting bracket (41) is made of, for example, a metal material such as iron, and is configured to ensure sufficient strength even when a child is placed on the child placing chair (37). The chair mounting bracket (41) is composed of a frame base (42) fixed to the back surface (40) of the child-mounting chair (37) and the bifurcated front wheel side coupling frame (2b), (2b). The frame mounting parts (43) that can be detachably attached to the
(43) and a frame attachment portion (44) detachably attached to the support frame (2a) that supports the handle (3).

The frame base (42) is provided with the child-mounting chair (3
It has a square shape that is slightly smaller than the shape of the back surface (40) of 7), and has a weight reduction hole (42) in the center to reduce weight.
a) has been drilled. Further, frame attachment portions (43) and (43) which are detachably attached to the front wheel side coupling frames (2b) and (2b) are formed orthogonal to the frame base portion (42) and near the tip portion. Are curved along the outer peripheral surfaces of the front wheel side coupling frames (2b), (2b). Then, the curved portions (43a), (43a)
Is brought into contact with the outer peripheral surfaces of the front wheel side coupling frames (2b), (2b), and the frame mounting portion (4
3), the frame clamping members (45) and (45), which are arranged on the opposite side to the front wheel side frames (2b) and (2b) and are curved, Front wheel side coupling frames (2b), (2b) are sandwiched. That is, the frame mounting portions (43) and (43) and the frame sandwiching members (45) and (45) include the bolt (46) and the nut (4).
By tightening 7), the front wheel side connecting frame (2
It is detachably sandwiched between b) and (2b).

When the distance between the operation part (4) and the drive part (9) is shortened according to the body of the operator who drives the bicycle, the frame attachment parts (43) and (43) are replaced with It may be attached to the rear wheel side coupling frames (8a) and (8a).

On the other hand, a frame attachment portion (44) detachably attached to the support frame (2a) supporting the handle (3) has a frame base (4) having the substantially rectangular shape.
It is formed so as to extend from the substantially central portion of 2) toward the support frame (2a) side. In addition, the frame mounting part (4
In 4), the portion abutting on the support frame (2a) is an annular portion (48) having an inner diameter slightly larger than the outer diameter of the support frame (2a), and further the annular portion (48). The shape from the end to the tip is linear. Then, the support frame (2
a) is inserted, and a bolt (49) and a nut (not shown) are attached to the linear end of the frame attaching portion (44). Therefore, the frame attachment member (44) is detachably clamped to the support frame (2a) by tightening the bolt (49) and the nut to tighten the annular portion (48).

The child-mounting chair (37) attached in this way is
Since it is detachably arranged on the front wheel side coupling frames (2b), (2b), no burden is imposed on the handle (3).

In addition, a part of the middle part of the frame base (42) is inclined downward in the drawing to allow the frame base (42) on the backrest (38) side of the child-mounting chair (37) and the child-mounting chair. A coil spring (51) is arranged between the back surface (40) of the chair (37). As a result, the impact is absorbed by the coil spring (51) even when traveling on a road surface having an uneven portion, so that the riding comfort is improved. The coil spring (51) is not limited to the above, and may be a leaf spring or the like.

According to the bicycle configured as described above, the distance between the operation part (4) and the drive part (9) can be adjusted by expanding and contracting by connecting the front wheel side frame (2) and the rear wheel side frame (8). In addition, since the grip portion (16) of the handle (3) can be expanded and contracted to the rear wheel side, the child-mounting chair (37) can be placed on the front wheel side coupling frames (2b) and (2b). Even when the bicycle is installed, the optimum position that matches the body of the operator who drives the bicycle can be obtained. Furthermore, when the operator who drives the bicycle is a mother, the distance between the child-mounting chair (37) and the saddle (7) is sufficient, so that the skirt or the like can be easily attached to the bicycle. You can ride. Further, since the child placing chair (37) is arranged directly on the frame, the child placing chair (3
Even if a child is placed on 7), the handle (3) will not be loaded, and the handle (3) will be able to be taken on a stable bicycle and even on a road surface with many irregularities. You can drive safely without.

Further, since the bicycle can be roughly divided into an operation portion (4) and a driving portion (9), it is possible to store the bicycle in the trunk of an automobile when going for a drive, for example. Is. If necessary, the handle (3), the child-mounting chair (37), the saddle (7), etc. can be removed to further reduce the size. In addition,
When separating the operation part (4) and the drive part (9), the brake hose (53) connected to the brake (52) for stopping the rotation of the rear wheel (5) is, as shown in FIG. A frame length adjusting hole (2) is formed in the front wheel side connecting frame (2b), (2b) by removing it from the rear wheel side brake (52).
It may be wound around the front wheel side coupling frame (2b), (2b) through the c).

The front wheel side coupling frames (2b), (2b) in this embodiment
The rear wheel side connecting frames (8a) and (8a) are all inclined at a predetermined angle with respect to the ground, but the front wheel side connecting frames (2b) and (2b) and the rear wheel side connecting frame (8a). ，
All of (8a) may be formed horizontally with respect to the ground. According to this, even if the distance between the operation unit (4) and the drive unit (9) is adjusted to be expanded or contracted, the operation unit (4) does not tilt to the front wheel side unlike the above-described embodiment.

[Effect of device]

As is clear from the above description, according to the bicycle of the present invention, the distance between the operating portion and the driving portion is extensible and adjustable, and the grip portion of the handle is also extensible and adjustable to the rear wheel side. Therefore, even when the child-mounting chair is arranged on the connecting frame, the optimum position suitable for the body of the operator who drives the bicycle can be obtained.

Further, since the child-mounting chair can be sufficiently separated from the saddle, even when the mother rides on the bicycle, the skirt or the like can be easily riding on the bicycle.

Further, since the child-mounting chair is arranged directly on the frame, the handle is not loaded, and even when the child is seated on the child-mounting chair, the child can sit on the bicycle stably and the unevenness can be obtained. Even on a road surface with many parts, the steering is not taken off and running stability is ensured.

Further, since the bicycle can be separated into the operating portion and the driving portion, it can be easily accommodated in the trunk of a bicycle or the like and is convenient to carry.

[Brief description of drawings]

1 is a schematic side view of a bicycle to which the present invention is applied, and FIG. 2 is a schematic side view showing a state in which an operating portion and a driving portion are separated from each other,
FIG. 3 is an enlarged perspective view of an essential part showing a mounting state of a child-mounting chair, FIG. 4 is an enlarged perspective view of an essential part showing an attached state of a grip part, and FIG. 5 is an essential part showing an attached state of a grip part. FIG. 6 is an enlarged plan view of an essential part showing a connected state of the front wheel side connecting frame and the rear wheel side connecting frame. 1 …… Front wheel 2 …… Front wheel side frame 2b …… Front wheel side connecting frame 3 …… Handle 4 …… Operating part 5 …… Rear wheel 6 …… Driving mechanism 7 …… Saddle 8 …… Rear wheel side frame 8a …… Rear wheel side connection frame 9 …… Drive unit 37 …… Chair for children

Claims (1)

[Scope of utility model registration request] 1. A front wheel, a front wheel frame that rotatably supports the front wheel and has a pair of front wheel side connecting frames, and a handle post that is supported by a support frame of the front wheel side frame so as to be adjustable in expansion and contraction in a height direction. Via a handle and a pair of grips that can be adjusted to extend and retract on the rear wheel side, a rear wheel, and a drive that can rotate the rear wheel by rotating the pedal. A mechanism, a saddle disposed above the drive mechanism and capable of expanding and contracting in the height direction, and a pair of front wheel side connecting frames of the front wheel side frame that support the rear wheels, the drive mechanism and the saddle, respectively. A drive unit including a rear wheel side frame having a pair of rear wheel side connection frames connected to each other, wherein the operation unit and the drive unit are the front wheel side connection frame and the rear wheel side. The front wheel side connecting frame and the rear wheel side connecting frame are connected by connecting the connecting frames so that the distance between the operating portion and the driving portion can be adjusted to expand and contract. A bicycle in which one of the side connecting frames and the three points of the supporting frame are detachably supported by a frame mounting portion and a child-mounting chair is mounted.