JP3180446U - Bicycle folding rear car - Google Patents

Abstract

Provided is a bicycle folding rear car that can be made compact by reducing the width width of the left and right sides of a cargo bed so that the rear car is in a so-called folded state without removing a part of the parts each time the rear car is folded. .
A left and right bottom frame 21, a load carrier plate 22 attached between the bottom frame 21, a side frame 23 constituting upper four sides, an operation handle portion 3 and a bicycle connecting portion 4 are provided. And a plurality of movable support ridges are laid horizontally between the left and right bottom side frames 21 so as to be movable from the width direction to the front and rear oblique directions, and the loading plate 22 is provided to be able to turn upright from the horizontal state to the vertical state. The operating handle 3 is provided with a brake handle 32, the connecting plate 42 is attached to the bicycle connecting portion 4, the wheel stopper 56 is detachably attached, and the auxiliary wheel 6 is attached to the front side of the loading platform.
[Selection] Figure 5

Description

  The present invention relates to a bicycle rear car connected to the rear part of a bicycle and pulled by the bicycle, and more particularly to a folding rear car for a bicycle in which the rear car can be folded.

  A rear car is known to be used when a package is loaded and transported. It is considered that the rear car is stored in a compact size when not in use. As a rear car having such a structure, for example, a “folding rear car” disclosed in Japanese Patent Application Laid-Open No. 2008-143458 and “Al made in Japanese Patent Application Laid-Open No. 9-277931” are disclosed. "Folding rear car" has been filed.

JP2008-143458 JP-A-9-277931

  However, in the above-mentioned “Folding rear car” of Japanese Patent Application Laid-Open No. 2008-143458 and “Folding rear car made of Al” of Japanese Patent Application Laid-Open No. 9-277931, the side surface of the steering wheel that connects the front ends of the handle side bars is folded. In addition, it was necessary to remove the rear car that had been folded, and when the folded rear car was returned to the original position, there was a problem that it was necessary to connect the removed side reeds between the front ends of the handle side reeds each time. .

  In view of the above-described problems, the present invention was created to solve the problems. The purpose of the present invention is to remove a part of the parts each time the rear car is folded, without removing the parts each time. It is an object of the present invention to provide a folding rear car for a bicycle that can be made compact by narrowing the left and right width intervals so that the rear car is in a so-called folded state.

  In order to achieve the above-described problems, the invention of claim 1 is directed to a rear car bed, a left and right bottom frame, a load bed plate attached between the left and right bottom frame, a bottom frame and an upper side of the load bed plate. Left and right side frames constituting the four sides, an operation handle portion provided on the rear side of the loading platform, and a bicycle connecting portion provided on the front side of the loading platform, and a plurality of them in the width direction between the left and right bottom side frames. The horizontal support frame is movably mounted in a slanting direction from the width direction to the front and back, and one side of one side extending in the front-rear direction of the carrier plate that is supported and attached on the movable support horizontal frame is set to the bottom side frame of one side. The wheel is mounted on the left and right sides of the loading platform, and the brake handle of the wheel is provided on the operation handle that forms the rear portion of the loading platform. A connecting hole into which a connecting projection connected to the rear side of the bicycle is inserted is attached to the upper center side of the bicycle connecting portion to be attached, and a connecting plate is attached to the outer side of the left and right bottom side frames to which the wheels are attached. A wheel support frame that supports the wheel is attached, a wheel stopper that prevents rotation of the wheel is detachably attached to the rear side of the wheel support frame, and an auxiliary wheel that supports the rear car together with the wheel when the connection from the bicycle is released to the front side of the cargo bed It consists of the means which attached.

  According to the folding rear car for a bicycle according to the first aspect of the present invention, when storing and storing the rear car, after the cargo bed plate is turned upward about its one side, the left and right bottom side frames of the cargo bed are By simply moving a plurality of movable supporting reeds arranged in the width direction between them in the diagonal direction from the width direction, the width interval between the left and right sides of the loading platform can be reduced, so that the rear car is in a so-called folded state. Thus, it is very practical and beneficial, such as being compact.

It is a side view of the folding rear car for bicycles showing a form for carrying out this device. It is a top view of the folding rear car for bicycles which shows the form for carrying out this device. It is a front view of the folding rear car for bicycles which shows the form for carrying out this device. It is a rear view of the folding rear car for bicycles which shows the form for carrying out this device. It is a side view at the time of folding of the folding rear car for bicycles showing a form for carrying out this device. It is a top view at the time of folding of the folding rear car for bicycles which shows the form for carrying out this device. It is a rear view at the time of folding of the folding rear car for bicycles showing a form for carrying out this device. It is a side view of the leg of the auxiliary wheel which shows the form for implementing this device.

  Hereinafter, based on the form for implementing the device described in the drawings of FIGS. 1 to 8, this device will be described in more detail.

  1 to 8, the folding rear car 1 for a bicycle is connected to the rear part of the bicycle and pulled by the bicycle, or is easily released from the rear part of the bicycle, and the operator pushes the rear car 1 directly and moves it. It is. Further, when the bicycle folding rear car 1 is not in use, the bicycle is folded with a narrower left and right width to be compact.

  A folding rear car 1 for a bicycle includes a loading platform 2 on which a load is placed, an operation handle portion 3 provided on the rear side of the loading platform 2, a bicycle connecting portion 4 provided on the front side of the loading platform 2, wheels 5 provided on the left and right sides of the loading platform 2, It is comprised from the auxiliary wheel 6 provided in the front left and right of the loading platform 2.

  The loading platform 2 includes left and right bottom side frames 21, a loading plate 22 attached between the left and right bottom side frames 21, and left and right side portions constituting the four sides of the upper side of the bottom side frame 21 and the loading plate 22. The frame 23, the operation handle portion 3 provided on the rear side of the loading platform 2, and the bicycle connecting portion 4 provided on the front side of the loading platform 2.

  The left and right bottom side frames 21 are formed by a pair of frame ridges having a square cross section, for example, extending in the front-rear direction with a gap left and right. Between the left and right bottom side frames 21, a plurality of movable support horizontal rods 21a are laid in the width direction. In the drawing, three movable supporting reeds 21a are attached in the front-rear direction. The left and right bottom side frames 21 have a plurality of movable support ribs 21a attached in the front-rear direction moving in the front-rear direction from the width direction, so that one of them moves forward and the other moves rearward. The space between the two is narrowed so that the loading platform 2 can be folded.

  Each of the movable support horizontal rods 21a movable from the horizontal direction to the front and rear oblique directions is horizontally connected to the connecting protrusions 21b provided so that both end sides slightly protrude from the inner side surfaces of the left and right bottom side frames 21. The shaft is pivotally supported. That is, each connection protrusion 21b is formed in a U shape when viewed from the side, and vertical shafts 21c penetrating vertically are respectively attached to both ends of the movable support lateral rod 21a on the inner side of the U shape. The upper and lower ends of the vertical shaft 21c are pivotally supported through the U-shaped upper and lower pieces of the connecting protrusion 21b.

  The load carrier plate 22 is supported and attached on the plurality of movable support reeds 21a configured as described above. The loading plate 22 is a rectangular plate on which a load is placed, for example, and a flat plate is used so that the load does not fall from the gap. When the space between the left and right bottom side frames 21 is narrowed, the loading plate 22 is movable upright from a horizontal state to a vertical state so as not to interfere with this.

  For this reason, one side extending in the front-rear direction of the cargo bed plate 22 and one side on the inner side of the bottom side frame 21 opposite to the side are a plurality of hinges 21d, and in the drawing, two hinges 21d. It is connected by. When the space between the left and right bottom side frames 21 is narrowed in order to fold the loading platform 2, the loading plate 22 stands up from the horizontal state to the vertical state with the hinge 21 d as a fulcrum so that the left and right bottom side frames 21 approach each other. There will be no hindrance if you do.

  The left and right side frames 23, the operation handle portion 3 including the frame rod and the bicycle connecting portion 4 are provided on the four side surfaces on the upper side of the loading platform plate 22. The luggage placed on the loading platform plate 22 is prevented from falling out of the loading platform 2 by the operation handle portion 3 and the bicycle coupling portion 4 which are composed of the frames 23 and the frame baskets. For this reason, a seat (not shown) or the like is usually attached to the inside surrounded by the left and right frames 23, the rear operation handle portion 3 and the front bicycle coupling portion 4.

  The side frames 23 constituting the left and right side portions of the loading platform 2 are provided on the upper side of the loading platform 2 so as to extend horizontally in the front-rear direction, and both sides extending in the front-rear direction are bent downward from there and extended downward. Both lower ends thereof are connected and supported by upper surfaces on both front and rear sides of the bottom frame 21. Similarly, a side intermediate frame 23a extending horizontally in the front-rear direction is attached to a position slightly higher than the middle of each side frame 23.

  The operation handle portion 3 constituting the rear part of the loading platform 2 is a place where the rear car 1 is operated from the rear when the bicycle folding rear car 1 is separated from the bicycle and used alone or stored. The operation handle portion 3 extends horizontally from the center upper side of the frame rod 31 to the left and right, from which both sides thereof are bent obliquely forward and downward, and further on the front side thereof is bent vertically downward. The frame ridge 31 is a portion that is gripped by a hand during operation on the upper side that extends horizontally from side to side.

  Two upper and lower portions of the vertically downward portion of the frame rod 31 constituting the operation handle portion 3 are supported by vertically passing through the inside of the cylindrical receiver 23b. The upper cylindrical receiver 23b is connected to the tip of an upper horizontal support bar 23c that extends horizontally from the portion of the portion extending downward on the rear side of the side frame 23 toward the inside of the loading platform 2. Yes. The lower cylindrical receiver 23 b is connected to the tip of a lower horizontal support rod 23 c that extends horizontally from the inner surface of the bottom frame 21 toward the inside of the loading platform 2.

  The lower end of the frame rod 31 of the operation handle portion 3 protrudes slightly below the lower cylindrical receiver 23b. A retaining pin is fitted on the side surface of the projecting frame rod 31 on the lower end side so that the frame rod 31 of the operation handle portion 3 does not come out upward when the rear car 1 is operated.

  Brake handles 32 are provided on the left and right sides of the operation handle portion 3 that can be grasped by the hand. The brake handle 32 is for braking the wheel 5. When the brake handle 32 is firmly held, a later-described wheel stopper 56 is actuated, whereby it is possible to prevent the wheel 5 from rotating due to the brake being applied. Can be prevented from moving on its own.

  A bicycle connecting portion 4 constituting a front portion of the loading platform 2 is for connecting the folding rear car 1 to a bicycle. The rear car 1 can be easily connected to and disconnected from the bicycle. The bicycle connecting part 4 extends horizontally from the center upper side of the frame rod 41 to the left and right, and from both sides thereof is bent obliquely rearward and downward, and its distal side is bent vertically downward.

  A connecting plate 42 is attached obliquely upward toward the front on the center upper side of the frame rod 41 extending horizontally from side to side. The front side of the connecting plate 42 is formed in a rounded shape. A connecting hole 42 a is formed in the center of the front half side of the connecting plate 42. The rear car 1 is interlocked and connected to the rear side of the bicycle by inserting and connecting the connection projections connected to the rear side of the bicycle into the connection hole 42a.

  The coupling plate 42 is provided with a coupling stopper 43 so that the inserted coupling convex portion does not come out of the coupling hole 42a when in use. An engagement groove 43a is formed in the connection stopper 43 at a position where it abuts on the side surface side of the connection convex portion. The engagement groove 43a is a neck having a small diameter around the connection convex portion protruding from the connection hole 42a. Engaging with the rotating part prevents the connecting convex portion from coming out of the connecting hole 42a. The engagement groove 43a is formed in a semicircular shape, for example.

  One end of the connection stopper 43 is rotatably supported on the surface of the connection plate 42, and is attached so as to be freely rotatable around the axis. The connection stopper 43 is pivotally supported while being urged by a coil spring or the like so that the engagement groove 43a is always urged toward the connection convex portion.

  Further, in a state where the engagement groove 43a of the connection stopper 43 is engaged with the neck portion of the connection projection, this is prevented so that the connection stopper 43 does not rotate in the direction in which it is released, that is, in the direction opposite to the urging direction. A pinning hole 42b for inserting a pin to be formed is formed in the connecting plate 42 on the front end side further than the connecting hole 42a. The connection stopper 43 is prevented from rotating in the connection release direction because the opposite side of the side where the engagement groove 43a is formed abuts on the pin inserted into the pin fixing hole 42b.

  Two upper and lower portions of the vertically downward portion of the frame rod 41 constituting the bicycle connecting portion 4 are supported by vertically penetrating the inside of the cylindrical receiver 23b. The upper and lower cylindrical receivers 23b are provided at the front ends of the upper and lower horizontal support rods 23c that extend horizontally from the two portions of the portion extending downward on the front side of the side frame 23 toward the inside of the loading platform 2. It is connected to.

  The lower end of the frame rod 31 of the bicycle connecting portion 4 protrudes slightly below the lower cylindrical receiver 23b. A retaining pin is fitted on the side surface of the projecting frame rod 31 on the lower end side so that the rear car 1 in which the frame rod 31 of the bicycle connecting portion 4 is connected to the bicycle does not come out upward during use. Is considered.

  Wheels 5 are respectively attached to the left and right sides of the loading platform 2. The left and right wheels 5 are attached at positions projecting outward from the outer side surface of the bottom frame 21. A wheel support frame 51 that supports the wheel 5 is attached to the outside of the left and right bottom side frames 21 to which the wheel 5 is attached.

  The front and rear ends of the wheel support frame 51 are bent in an arc toward the bottom side frame 21, and the wheel 5 is disposed between the wheel support frame 51 and the bottom side frame 21. Axle bearing pieces 53 protrude downward from the bottom side frame 21 and the wheel support frame 51, and both ends of the axle 52 are pivotally supported by the pair of axle bearing pieces 53. For this reason, the height of the axle 52 of the wheel 5 is slightly lower than the bottom frame 21 and the wheel support frame 51.

  Further, wheel covers 54 that cover the upper half side of the wheel 5 are respectively attached. The wheel cover 54 is formed in an arc shape slightly larger than the outer circle of the wheel 5 when viewed from the side. The wheel cover 54 is also formed in an arc shape that is slightly larger than the cross section of the tire of the wheel 5.

  The wheel cover 54 is suspended with its uppermost end connected to a cover support frame 55. The lower end of the cover support frame 55 is connected to and supported by the center upper surface of the wheel support frame 51, and the upper side is bent in an arc toward the side frame 23 and is connected to the outer surface of the side intermediate frame 23a.

  A wheel stopper 56 for directly preventing rotation of the wheel 5 is attached to the rear side of the wheel support frame 51. The wheel stopper 56 is operated by the brake handle 32 described above to prevent the wheel 5 from freely rotating during use and storage, and to prevent the rear car 1 from moving freely during use and storage. . The wheel stopper 56 is structured to prevent the rotation of the wheel 5 by sandwiching the rear portion of the tire of the wheel 5 from both sides.

  Two auxiliary wheels 6 that support the rear car 1 released from the bicycle together with the wheels 5 are attached to the front side of the loading platform 2. Each auxiliary wheel 6 is attached to the lower end of the leg 61 so as to be pivotable horizontally. The leg 61 with the auxiliary wheel 6 attached to the lower end is extended upward, and the inside of a cylindrical cylindrical leg support 62 attached vertically to the outer surface on the front side of the bottom frame 21 is vertically moved up and down. Installed through.

  On the side surface of the leg 61, a receiving groove 61a is formed to engage a distal end side of a stopper 64 described later. The receiving groove 61a is formed at a height to be inserted into the cylindrical cylindrical leg holder 62 in a state where the auxiliary wheel 6 at the lower end of the leg 61 is in contact with the ground. The receiving groove 61a is formed, for example, over the entire circumference of the side surface of the leg 61, and the diameter of the groove bottom is smaller than the diameter of the other part of the leg 61.

  A coil spring 63 wound in a spiral manner is provided on the outer peripheral side surface of the upper portion of the leg 61 that passes through the cylindrical leg support 62. When the bicycle folding rear car 1 is connected to the rear side of the bicycle, the coil spring 63 pushes the leg 61 upward so that the auxiliary wheel 6 at the lower end of the leg 61 does not come into contact with the ground. The auxiliary wheel 6 is prevented from becoming a hindrance when used in conjunction with a bicycle.

  A stopper 64 that protrudes forward is attached to the cylindrical leg holder 62. The stopper 64 is inserted into the cylindrical leg holder 62 and its distal end engages with a receiving groove 61 a formed on the side surface of the leg 61, thereby resisting the urging force of the coil spring 63 and the auxiliary wheel 6 at its lower end. Fulfills the function of holding the leg 61 pushed down in contact with the ground in that state.

The distal end side of the stopper 64 is always urged toward the receiving groove 61a on the side surface of the leg 61. When the distal end side of the stopper 64 is removed from the receiving groove 61a on the side surface of the leg 61, the leg 61 and the lower end thereof are removed. The auxiliary wheel 6 is pushed upward by the biasing force of the coil spring 63. Since the pushed auxiliary wheel 6 is not touched away from the ground, the auxiliary wheel 6 does not interfere with the use of the rear car 1 connected to a bicycle.

Next, the operation based on the configuration of the embodiment for carrying out the above device will be described below.
When the bicycle folding rear car 1 is connected to the rear side of the bicycle, it is connected to the rear side of the bicycle in a connecting hole 42a of a connecting plate 42 attached to the bicycle connecting portion 4 constituting the front of the loading platform 2. The rear car 1 can be easily connected to the rear side of the bicycle by inserting the connecting projection and engaging the engaging groove 43a of the connecting stopper 43 for connection. The rear car 1 connected to the rear side of the bicycle through the bicycle connecting portion 4 is pulled by the bicycle.

  Further, when the bicycle folding rear car 1 is separated from the rear side of the bicycle, it is connected to the rear side of the bicycle from a connection hole 42a of a connection plate 42 attached to the bicycle connection portion 4 constituting the front of the loading platform 2. By rotating the engaging groove 43a of the connecting stopper 43 in the releasing direction and extracting the connecting convex portion, the rear car 1 can be easily released and disconnected from the rear side of the bicycle. The rear car 1 released from the bicycle can be handled by manipulating the rear car manually by grasping the operation handle 3 on the rear side with a hand.

  Subsequently, when the bicycle folding rear car 1 is stored and stored, if the wheel stopper 56 is operated by firmly grasping the brake handle 32 by hand, both sides of the rear side of the tire of the wheel 5 are sandwiched by the wheel stopper 56. The wheels 5 should not rotate freely.

  Then, the loading platform plate 22 lying horizontally on the bottom surface side of the loading platform 2 is turned up by using a hinge 21d attached to one side of the loading platform plate 22. The load carrier plate 22 stands up with the hinge 21d as the center of rotation.

  After raising the horizontal carrier plate 22 that prevented the gap between the left and right bottom side frames 21 and the side frames 23 of the loading platform 2 from being narrowed, one of the left and right bottom side frames 21 and the side frames 23 is Move to the front and move the other to the rear.

  Then, the movable support horizontal rod 21a horizontally laid between the left and right bottom side frames 21 is pivoted horizontally around the vertical axis 21c of the connecting protrusion 21b so that the left and right bottom portions The state changes from a state perpendicular to the side frame 21 to an oblique state.

  Thereby, the space | interval of the right-and-left bottom part side frame 21 and the side part frame 23 becomes narrow, and the rear car 1 can be made into what is called a folding state, and can be made compact.

  It should be noted that the present invention is not limited to the mode for carrying out the above-described invention, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Bicycle folding rear car 2 Cargo bed 21 Bottom side frame 21a Movable support lateral beam 21b Connection protrusion 21c Vertical shaft 21d Hinge 22 Cargo plate 23 Side frame 23a Side intermediate frame 23b Cylindrical support 23c Horizontal support rod 3 Operation handle part 31 frame rod 32 brake handle 4 bicycle coupling portion 41 frame rod 42 coupling plate 42a coupling hole 42b pinning hole 43 coupling stopper 43a engagement groove 5 wheel 51 wheel support frame 52 axle 53 axle bearing piece 54 wheel cover 55 cover support frame 56 Wheel stopper 6 Auxiliary wheel 61 Leg 61a Receiving groove 62 Cylindrical leg receiver 63 Coil spring 64 Stopper

Claims (2)

  Left and right bottom frames, left and right bottom frames, left and right bottom frames, left and right side frames that form the four sides of the top side It is composed of an operation handle part provided on the front side and a bicycle connecting part provided on the front side of the loading platform, and a plurality of movable support ridges can be moved in the width direction between the left and right bottom side frames from the width direction to the front and rear oblique directions. One side of one side extending in the front-rear direction of the carrier plate that is horizontally mounted and supported on the movable support ridge is provided on one bottom side frame so as to be able to rotate and stand upright from a horizontal state to a vertical state. Install the wheels on the left and right sides respectively, provide the wheel brake handle on the operation handle that forms the rear part of the loading platform, and place the rear of the bicycle on the center upper side of the bicycle connection that forms the front part of the loading platform. A connecting hole into which a connecting convex portion connected to the side is inserted is drilled and a connecting plate is attached, and a wheel support frame for supporting the wheel is attached to the outer side of the left and right bottom side frames to which the wheel is attached. A folding rear car for a bicycle characterized in that a wheel stopper for preventing wheel rotation is detachably attached to the rear side, and an auxiliary wheel for supporting the rear car together with the wheel when the connection from the bicycle is released is attached to the front side of the loading platform. A coil spring for urging the leg with the auxiliary wheel attached to the lower end is covered on the outer peripheral side surface on the upper side of the leg, and the tip is engaged with a receiving groove formed on the side surface of the leg so that the leg is The folding rear car for a bicycle according to claim 1, wherein a stopper for resisting the biasing force of the coil spring and holding the auxiliary wheel at the lower end thereof in a position in contact with the ground is provided at the lower part on the front side of the cargo bed.

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