JP3060071U - Multipurpose cart for pedestrian bicycles, not limited to use - Google Patents

Abstract

(57) [Abstract] (Modifications required) [Problem] Can be towed even when walking or cycling. The loading platform has a flat surface. To provide a convenient multi-purpose cart that is not limited to transport and use for outdoor home workplaces. SOLUTION: A sliding mechanism is connected to a shaft hole in a shaft hole to each of the divided mechanisms of the loading platforms 1, 2, 3 and main wheels 4 so as to perform expansion and contraction and hinge functions, and the guard room configuration is divided into the same. Folding and storage on both sides ensure flat loading surface.
The general-purpose product connecting frame 19 has 18 and 20 and has both ends to receive the fitting 22 and the handle 17 and to be connected to the bicycle. It is installed at the lower part of the towing lever, reduces the rolling resistance, guides the main wheel 4, and the main wheel rises to the corner under the same condition.

Description

[Detailed description of the invention]

[0001]

[Problems to be solved by the invention]

 Conventionally, walking and towing of a two-wheeled cart requires a lever to be applied or lifted up or pulled up by hand when crossing a stair step, which is not good for towing.

[0002] Depending on the shape of the load, such as travel bags, shopping, outdoor, and other workplaces for home use, there are many applications with dedicated functions, limited use, and poor use in a wide range of applications. .

[0003] In the case of shopping, in the case of a cart with a bag, shopping in the store may be refused because of fear of shoplifting. , It took time to return the shopping cart to its original location. In large stores, there were places far from the bicycle parking lot and the parking lot was burdensome.

The conventional cart is limited to walking use and is not suitable for bicycle use. Bicycles with attached palanquins tend to have insufficient load shape, and sometimes they are installed two before and after. It was not easy to remove, and it was often installed at all times, impairing the function of the bicycle.

[0005]

[Means for solving the agenda]

 The left and right carrier frames (1), (3), the slide shaft mechanism (16), the central carrier frame (2), and the left and right main wheel frames (4), (6) are separated in order to correspond to various types of cargo. Then, the hinge mechanisms were measured and connected to each other so that the folding of the carrier frames (1), (2), and (3) and the expansion and contraction action of the carrier surface were used together.

[0006] As a folding procedure, the set screw (38) on the tow lever (7) is loosened by loosening the set screw (38), the lever (7) is dropped, the handle is turned over, and the movement is stopped again with the set screw toward the loading platform. .

[0007] Further, due to the configuration of the hinge function, a bearing pipe (36) joined to the slide shaft (16) through the center shaft hole (34) is abutted on the front and rear of the center carrier frame (2), and the center shaft frame (45) When the upper part of the fixed guard frame (12) is lifted up from the function of the hinge function, the carrier frames (1) and (3) are turned upside down, and at the same time, the left and right main wheel frames (6) are Through (44), the shaft rod (46) is passed through the shaft hole (35) installed in the carrier frame (1) (3), and the hinges function so that the left and right main wheel frames face each other. , Narrowing vertically and in parallel to both sides of the center frame. FIG.

In order to prevent opening and closing of the loading platform and unnecessary movement of the slide shaft (16) after folding, a stacking shaft (47) formed by bending a single wire rod is used for the central loading frame (2). ), Shaft shaft holes are provided on both sides, and the shaft is mounted with both base ends as shafts. When assembled, the shaft (47) is turned over toward the front of the frame (2) to prevent the above At the time of application, turn the underside carrier frames (1) and (3) so as to hold them, toward the rear. FIG.

[0009] The slide shaft (16) of the telescopic machine is connected to a bearing pipe (36) at one base end and to a shaft receiving member (37) installed on the carrier frame (1) (3) at one end. It was inserted and secured, and the platforms (1) and (3) were slid to the left and right to enable expansion and contraction.

[0010] The member of the shaft receiving member (37) is formed by bending a plate and attaching it to the carrier frame by providing a shaft hole, or through a resin molded product, aluminum, or an aluminum alloy forged product. It is also effective to provide holes and integrate them individually with the carrier frame or the frame.

[0011] Similarly, in the loading frame (1), (2), and (3), it is effective to integrally form various processing and installation parts with a resin molded product or an aluminum alloy forged product, and to apply an aluminum steel sheet metal working. .

By separating the carrier frame, the folding mechanism of the guard frame configuration (9) (10) (11) (15) can be stored and installed on each side, and the carrier ((1) (2) (3)) Was secured flat.

When the guide frames (9) and (48) are assembled, the telescopic pin (10) slides in the same direction as the frame as the carrier frame expands and contracts, and is operated simultaneously to facilitate handling, and Convenience was given to the availability of the guard frame according to the conditions of the product.

[0014] One of the pipe-shaped guard frames (9) and the base end are used as shafts, and the carrier frames (1) and (3) are respectively mounted on shaft holes provided on one side of the rear end to perform pulling-out and reversing action. In order to keep the length of the guard, one of the base ends is required. One is provided with a shaft hole in the disk processing on the way, and one is connected to the frame ( 9), one piece is joined to the base end of the other joint frame (48), and a shaft hole is also provided. The shaft hole is used to sandwich the rooms (9) and (48). Then, the guard frame joint frame was turned around and turned upside down to make it foldable.

The bending dimension of one of the joint frames from the base end is adjusted to the width dimension of the carrier frame (1) or (3), and a telescopic pin (10) obtained by bending a wire is attached to the base end of the frame pipe. Insert the base end, rotate the pin (10) and prevent it from falling off, slide it in accordance with the expansion and contraction of the carrier, and attach it to the pin receiver (13) installed on the fixed guard frame (12) of the same pin, either up or down. And fix it.

The joint receiving bracket (22), which is a general-purpose part associated with towing a bicycle, is provided with a shaft hole of a hook (21) formed by bending a plate, a shaft hole of a mounting knob screw (23), and a nut for a knob screw. , Joined to the shaft hole on one side (23) of the metal fitting (22).

The configuration of the hook (21), the horizontal axis (41) is joined to the shaft vertical axis (42), and the hook vertical axis base end is rounded to a position where the other arm joint (20) does not come off. The attachment and detachment of the arm joint (20) was facilitated simply by attaching the shaft (41) to the shaft hole of (22) and using the hanging function from (41) as a base point and simply reversing it.

[0018] To attach the joint, push the joint receiving bracket (22) open and wide, place it in the frame below the saddle under the bicycle, attach the hook (21) to the hook shaft hole of (22), and attach the knob screw (23). ) To secure.

The shape member of the arm joint (20) attached to the general-purpose product connecting arm (19) is effective for a sheet metal, a shaft, and a forged product as long as it can be inserted into the hook (21).

Similarly, the reinforcing rod (18) attached to the connecting arm (19) is made of a wire rod, and has two ends on both sides of the arm, and has a distal end adapted to the diameter of the traction lever (7). In the formation of the unified bent, the shaft hole of the rod (18) is provided so that the arm (19) can be inverted, and the base point at both ends is used. In order to obtain, set the length larger than the shaft diameter of the towing lever (7), set it at the base point of the tip radius to a position slightly smaller than the shaft diameter of the towing lever (7), and bend again at the base point of the radius. Therefore, a spring function is provided to obtain an appropriate force to prevent the reinforcing rod from easily detaching, and the push rod is attached to the lever by pushing and opening, and the connecting arm and the towing lever are pressed against the vertical and horizontal directions. Combined operation with endurable reinforcement I let it.

In order to connect the cart to the bicycle, the proximal end of the connecting arm (19) is inserted into the handle (17), the reinforcing rod (18) is inverted, and the distal end is connected to the tow lever (7). Push and fix, one arm (20) joint is attached to the joint receiving bracket (22). It was simple and easy to operate.

In order to cope with the towing load depending on the load conditions, the towing levers (7) and (8) and the stationary stand (30) so that the load can be kept horizontal with respect to the ground surface when the cart is stopped and moved. When the receiving shaft hole is provided in the shaft and the two connecting ends of the interlocking rod (25) are connected as axes, and the tilting operation is performed with the support (15) of the tow lever as a fulcrum, (25) is simultaneously reduced to (30). The cart was immediately released from the stationary state, and the towing operation was obtained and the load on the towing lever was reduced so that the load remained the same as the stationary state.

When the cart goes over a stair step, the cart is composed of a main wheel (4) and two auxiliary wheels (5) set to a wheel diameter and half the size of the main wheel. The height of the step corner is set to be above the semicircle of the wheel diameter and the horizontal center line, reducing the rolling resistance of the corner and reducing the burden of riding.

The width of the two auxiliary wheels is the same as the width of the center room (2) to reduce the size of the auxiliary wheel when compacting. And fix it through the auxiliary axle rod.

When the auxiliary wheel (5) is guided and rides on a step first, the main wheel (5) floats to a semicircle of the circumference, a position worth above the horizontal center line, and a step corner. As with the uplifting wheels, the vehicle can ride with reduced rolling resistance.

[0026]

[Effect of the invention]

 When the guard frame is folded, a flat loading platform can be secured, and even if the load is larger than the loading platform surface, it can be transported. Even for larger or horizontally long items, the loading platform can be spread horizontally to increase the stability of transportation. In the case of a vertically long product, the guard frame can be set up and fixed. Small items are stored separately by placing existing bags or bag items, and in the case of multiple luggage protruding from the loading platform, use nets with strings as general-purpose items, use rubber cords, fasten them to the guard frame and cart body, It is possible to cover the luggage to prevent slipping, transport goods at home, shopping outdoors, using props at work, folding the main cart, storing it in the passenger seat or trunk of the car, walking and walking. In the case of bicycles, the cart can be towed in a folded state, or placed on a stationary basket, making it easier to transport to both destinations. In addition, put the shopping cart in the store and pull the cart to complete the shopping, pull it to the parking lot or connect it to the bicycle at the bicycle parking lot, save time, and in the case of walking, step on the way, stairs and sidewalks. , Both reduced the traction burden. For towing the bicycle, the load on the driving operation was reduced and the safety was improved. The connection and detachment of the cart and bicycle became easier, and when not needed, they were folded and the convenience of storage was increased.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a cart of the present invention from the rear.

FIG. 2 is a perspective view of a main part of the same situation as above, in which the pulling lever of the cart is tilted and the guard frame is folded;

FIG. 3 is a perspective view showing a situation where the guard frame of the cart is assembled at a high place or a low place.

FIG. 4 is a side view showing a situation before the vehicle goes over a step when the cart according to the present invention is at rest and when it is in operation;

FIG. 5 is a side view showing a situation in which the auxiliary wheels of the cart have climbed over step corners;

FIG. 6 is a perspective view showing the disassembly cutout and analysis of the cart of the present invention.

FIG. 7 is a front view showing the main part of the cart according to the present invention during assembly.

FIG. 8 is a perspective view showing a situation after the cart is assembled.

FIG. 9 is an overall structural perspective view of the bicycle towing connecting arm (19).

FIG. 10 is a perspective view showing a joint receiving member, a hook and a structure of the connecting arm (19).

FIG. 11 is a side view of a main part of the bicycle of the present invention before and after the connecting arm is mounted on the main part of the bicycle, the rear frame of the bicycle, in which the cart is cut away.

FIG. 12 is a front view of a main part of the front of the cart of the present invention.

FIG. 13 is a side view of essential parts of the cart.

FIG. 14 is a plan view of essential parts of the cart.

FIG. 15 is a front view of a main part of the back of the cart.

FIG. 16 is a plan view of a main part of the cart of the present invention.

FIG. 17 is a side view of the entire main part of the cart.

FIG. 18 is a front view of the main part of the cart of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Left loading frame 2 Central loading frame 3 Right loading frame 4 Main wheel 5 Auxiliary wheel 6 Main wheel frame 7 Upper traction lever 8 Lower traction lever 9 Lower guard frame 10 Guard extendable pin 11 Rear guard frame 12 Fixed guard frame 13 Telescopic pin receiver 14 auxiliary shaft 15 lever support 16 slide shaft 17 handle 18 reinforcing rod 19 connecting arm 20 arm joint 21 hook 22 joint receiving bracket 23 knob screw 24 bicycle saddle frame 25 interlocking rod 26 guard joint 27 main wheel support 28 auxiliary wheel shaft rod 29 auxiliary Wheel support 30 Stationary stand 31 Main wheel axle rod 32 Center frame front receiving material 33 Yanter frame rear receiving material 34 Center shaft hole 35 Side shaft hole 36 Bearing pipe 37 Slide shaft receiver Material 38 Stopper screw 39 Stand support body 40 Side frame receiving material 41 Hook horizontal axis 42 Hook vertical axis 43 Side guard shaft hole 44 Main wheel frame shaft hole 45 Center No. shaft frame 46 Side No. shaft 47 Stacking shaft 48 Guard joint frame

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[Procedure amendment]

[Submission date] January 5, 1999

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] FIG.

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[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

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FIG. 13

[Procedure amendment 3]

[Document name to be amended] Drawing

[Correction target item name] FIG.

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[Procedure amendment 4]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

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Claims (4)

[Utility model registration claims] 1. A slide mechanism in which the left and right main wheel frames (4) and (6) and the carrier frames (1), (2) and (3) are separated and used together with hinges, (16), (36) and (37). Are connected by hinge shafts (25) and (46) through shaft holes, respectively, so that the folding of the cart and the carrier frames (1) and (3) are performed.
Left and right expansion and contraction. A multipurpose tow cart that is constructed by bending and joining guard frames (9), (10), (11), and (26) on both sides of a carrier, and folds and stores the carrier so that the carrier can expand and contract and operate in combination. 2. The traction to the bicycle is a general-purpose one having a connecting frame (19) having (18) and (20) and a joint receiving fitting (22) having (21) and (23). , (22) is installed in the room below the saddle of the bicycle,
(19) is inserted into (7), (20) is attached to (21),
(18) is reversed and attached to the lever (7) to prevent the release of (19) and to reinforce the vertical and horizontal negative pressure applied during towing (19) and (7). Multipurpose towing cart used in combination. 3. A structure in which both ends of an interlocking rod (25) are connected to the stationary stand (30) and the lower part of the towing lever (8), and when the towing operation is performed, the levers (7) and (8) are tilted ( 25) is linked and pushes up (30) to release the stationary state. A multi-purpose towing cart with a feature that allows the loading platform and luggage to be level while entering the towing operation. 4. A main wheel (4) and two auxiliary wheels (5) having a half diameter of the wheel, and the position of the auxiliary wheel is determined by setting the height of the step corner to the circumference of the wheel diameter. The semi-circle is located below the traction lever (8) so that it is above the horizontal center line. (4) The multi-purpose tow cart that lifts up to the semicircle of the auxiliary wheel, reduces both rolling resistance loads, and makes it easy to climb over steps.