JPH06183350A - Baggage cart - Google Patents

Abstract

PURPOSE:To provide a baggage cart capable of moving up and down the stairs smoothly without impact only by inclining the cart while being kept in the walking attitude. CONSTITUTION:Lateral support frames 10, 11 are projected backward from a left and a right main handle arms 2, 3 at the rear part of a load receiving frame 4. Oblique support frames 14, 15 are rotatably connected to the rear ends of the lateral support frames 10, 11, and the lower ends of the oblique support frames 14, 15 are extended toward an axle 7 and rotatably connected to a fixed member on the load receiving frame 4 side so as to make the lateral support frames 10, 11 and the oblique support frames 14, 15 rotatable between two positions, that is, between a position close to the main handle arms 2, 3 and a position projected backward. The oblique support frames 14, 15 can be thereby slide along the ridge parts of steps so as to enable a cart to move up and down the stairs.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a small cart for carrying baggage such as a travel bag.

[0002]

2. Description of the Related Art As a small cart for carrying baggage such as a travel bag, a structure such as a carrier shown in Japanese Utility Model Publication No. 3-40693 is known. Each stage has the inconvenience of having to lift or lower the carrier.

As a measure against the inconvenience described above, a sliding device such as that shown in Japanese Utility Model Publication No. 52-27804, a caterpillar (registered trademark) type device, or left and right wheels with their axles arranged on triangular points 3 A ring configuration has been proposed.

In the sliding device disclosed in the above-mentioned Japanese Utility Model Publication No. 52-27804, the body of the sliding foot must be bent so that the body of the sliding foot can be bent along the ridges of the stairs, and the handle of the small cart must be pulled or pushed forward. However, there is a problem of easy fatigue, and caterpillars and those with three wheels are large and are not suitable for carrying during travel.

It is also proposed to extend a lateral support frame rearward from the vicinity of the axle and extend an oblique support frame from the rear end toward the handle main pillar. The purpose is to reinforce the attachment part with the main pillar of the handle, and it is not possible to absorb the step when climbing the stairs.

[0006]

DISCLOSURE OF THE INVENTION The present invention is small in size and can be carried during travel, and when the stairs of a station, a building, etc. are elevated and lowered, the ridges of the stairs are slid in a normal walking posture. It is an object of the present invention to provide a baggage cart that has a simple structure that can be pulled up and down, is easy to operate, has high rigidity, and is relatively lightweight.

[0007]

In order to solve the above-mentioned problems, in the invention of claim 1, the axles of the left and right wheels and the left and right main handle arms are arranged in the rear portion of the load receiving frame. A horizontal support frame projects from the upper part of the main handle arm toward the rear, which is the opposite direction to the load receiving frame, and the projecting length is the imaginary line connecting the rear end parts of the peripheral surfaces of the left and right wheels and the axle. It is set to be longer than the interval, and an oblique support frame is extended from the rear end portion of the lateral support frame in the axial direction and is rotatably supported by a fixing member on the load receiving frame side. The lower portion of the frame is located in the vicinity of the imaginary line connecting the rear end portions of the peripheral surfaces of the left and right wheels, and the lateral support frame is a first support unit in which the oblique support frame is brought close to the left and right main handles. 2 of the position and the second position where the diagonal support frame is separated from the left and right main handles.置間 movably, has a structure that is coupled to the left and right main handle arm and the swash support frame.

According to the second aspect of the present invention, the left and right lateral support frames are provided on the lateral support frame as means for moving between the first position and the second position. It is configured to be rotatably connected to the frame, and to be provided with a vertically bending and rotating portion in a central portion and a holding stopper in an overhanging posture.

According to the invention of claim 3, the first frame is provided on the lateral support frame.
As a configuration for moving between two positions, a position and a second position,
The left and right lateral support frames are each one rod, and are pivotally connected to the upper part of the oblique support frame at one end, and vertically slidably fitted to the left and right main handle arms at the other end. The short sleeve is rotatably coupled to the short sleeve, and the short sleeve extends downwardly so that the horizontal support frame and the oblique support frame are close to the left and right main handle arms and the horizontal support frame extends rearward. The oblique support frame is slidably assembled between two positions, that is, an upper position in which the oblique support frame is in an oblique posture apart from the left and right main handle arms.

[0010]

According to the invention of claim 1, the lateral support frame is extended rearward from the left and right main handle arms by one operation of moving the lateral support frame from the first position to the second position, and at the same time, the oblique support frame is supported. The frame is oriented toward the axle direction from the position near the rear end of the horizontal support frame, and the overhang length of the horizontal support frame is longer than the distance between the imaginary line connecting the rear ends of the peripheral surfaces of the left and right wheels and the axle. Since the lower part of the support frame is located in the vicinity of the imaginary line that connects the rear end portions of the peripheral surfaces of the left and right wheels, simply grip the handle in a normal walking posture when climbing stairs, and tilt the cart, Since the oblique support frame comes into contact with the ridge of the stairs and this contact is continuously made, the cart can be pulled up and down without impact.

As for the operation, only one operation of moving the lateral support frame from the first position to the second position is sufficient, and conversely, only the operation of moving the horizontal support frame from the second position to the first position is performed. Since it can be returned to the posture in which it is brought close to the left and right main handle arms, the operation is remarkably simple.

According to the second aspect of the present invention, the left and right lateral support frames are formed into a straight rod shape only by rotating the bending and rotating portions in the central portion so that the ridge portion of the stairs can be pulled up and down without impact. It can be deformed into a compact form only by rotating and bending the bending and rotating portion. Moreover, since there is no attachment or detachment part, the rigidity is high, and the number of parts can be increased even when the horizontal support frame and the oblique support are used. Only the frame and the rotatable mounting portions thereof can be made relatively lightweight.

According to the third aspect of the invention, the lateral support frames are each 1
It is a rod of a book, and one end of this horizontal support frame is rotatably connected to a short sleeve slidably fitted on the left and right main handle arms, so that the convenience of operation is maintained. , The rigidity is further improved.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS.
1 to 4 and 6 show the cart 1 in use, and FIG. 5 shows
1 shows the cart 1 in a folded and unused state.

In the main part of the cart 1, the load receiving frame 4 is erected up and down with respect to the left and right main handle arms 2 and 3, and wheels 5 and 6 are provided at the rear part of the load receiving frame 4. An axle 7 that is rotatably attached is provided.

In the left and right main handle arms 2 and 3, extension arms 8 and 9 are provided at two positions, an extended position shown in FIGS. 3 and 4 and a storage position shown in FIG. Built in to be held in place.

The structure for incorporating the rotating mechanism of the load receiving frame 4 and the extension arm is a well-known mechanism, and the detailed structure thereof is not shown.

Left and right lateral support frames 10 and 11 project from the upper portions of the main handle arms 2 and 3 toward the rear opposite to the load receiving frame 4, and the projecting lengths thereof are the left and right wheels 5 and 6. Is set to be longer than the distance between the imaginary line L connecting the rear end portions of the peripheral surface and the axle 7.

The rear end portions 12, 13 of the lateral supporting frames 10, 11 are
The front end portion 16, which is rotatably coupled to the diagonal support frames 14 and 15,
A shaft 17 is rotatably connected to sleeves 18 and 19 which are externally fitted and fixed to the upper portions of the left and right main handle arms 2 and 3.

The lateral support frames 10 and 11 are front frames 2 made of a plate-like body.
2 and 23 and rear frames 24 and 25 connected in a substantially U-shape. The front frames 22 and 23 and the rear frames 24 and 25 are the horizontal support frames 1.
It is engaged in the central part of 0 and 11 so as to be vertically rotatable,
This engaging portion constitutes the bending rotation portions 26 and 27.

The front frame 22, in the bending and turning parts 26, 27,
Holding stoppers 28 and 29 that abut the lower surfaces of the front portions of the rear frames 24 and 25 are formed to project from the front frame 23.
2, 23 and the rear frames 24, 25 are in contact with the lower surfaces of the front portions of the rear frames 24, 25 at the time when the bending rotation portions 26, 27 maintain the posture in which they are bent slightly upward. It is configured to prevent further upward refraction and to maintain the lateral postures of the lateral support frames 10 and 11 in the overhanging posture.

In the state shown in FIGS. 1 and 3, when the bending and turning portions 26 and 27 are pressed downward from above, the bending and turning portions 26 and 27 easily bend in a dogleg shape, and the front frame 22 as shown in FIG. , 23 and the rear frames 24, 25 are in a posture such that they are double overlapped inside and outside.

The oblique support frames 14 and 15 are the horizontal support frames 10 and 1, respectively.
1 extends in the direction of the axle 7 from the rear end portions 12 and 13 of the load receiving frame 4, and in the illustrated example, the axle 7 has a lower end 3
It is rotatably supported at 0 and 31.

Lower portions 32, 33 of the oblique supporting frames 14, 15
Are located near the virtual line L.

The oblique supporting frames 14 and 15 are provided with the bending and turning portion 2
As shown in FIG. 5, the front frames 22, 23 and the rear frames 24, 25 are in a posture such that the front and rear frames 24, 25 overlap with each other inside and outside, and the oblique support frames 14, 15 are the main handles. The position close to the arms 2 and 3 is the first position, and the position shown in FIGS. 2, 3 and 4 is the second position.

In the illustrated example, the oblique supporting frames 14 and 15 have the horizontal rod 34.
And the rear frames 24 and 25 of the horizontal supporting frames 10 and 11 are also connected to the horizontal rod 35, but the structure is not limited to this.

FIG. 6 shows the horizontal support frames 10 and 11 of the cart 1.
Shows the positional relationship of the respective members when the stairs 36 are raised and lowered by projecting backwards and maintaining the oblique postures of the oblique support frames 14 and 15.

In the figure, the luggage on the cargo receiving frame 4 is omitted, but even if the total weight is printed on the oblique supporting frames 14 and 15 which come into contact with the ridges 37 of the stairs 36, the lateral supporting frames 10 and 11 are not shown.
Holds the stoppers 28, 29 of the front frames 22, 23 in contact with the rear frames 24, 25 to prevent further rotation and refraction of the refracting / rotating parts 26, 27. Since the downward refracting force does not act, the horizontal support frames 10, 11,
As long as the strength of the diagonal support frames 14 and 15 can bear the weight of the load, the diagonal support frames 14 and 15 slide on the ridge portion 37, and the cart 1 smoothly slides on the stairs 36.

After passing through the stairs, the horizontal supporting frames 10 and 11 are folded as described above, so that they do not become an obstacle during transportation on a flat floor surface.

FIGS. 7 to 10 show an embodiment of the invention of claims 1 and 3, wherein in this embodiment the lateral support frames 38, 39 are one rod. Frame 3
The short sleeves 42 and 43 to which the end portions 40 and 41 of 8, 39 are fixed are externally fitted to the left and right main handle arms 2 and 3 so as to be vertically movable. ,
The structure is the same as that of the first embodiment, and therefore the same members will be described with the same reference numerals.

As shown in FIG. 7, the lateral support frames 38, 39
Is rotatably connected to the upper portions of the oblique support frames 14 and 15 at one ends 44 and 45.

The other ends 40, 41 of the horizontal support frames 38, 39 are rotatably connected to a horizontal rod 46, and both ends 47 of the horizontal rod 46,
48 is fixed to the short sleeves 42 and 43.

As shown in FIGS. 7 and 9, the short sleeves 42 and 43 are obliquely supported by the oblique supporting frames 14 and 15 when the short sleeves 42 and 43 are guided to the upper position where they abut the lateral handle arms 49 at the upper ends of the main handle arms 2 and 3. The lateral support frames 38 and 39 coupled to the rear side are projected rearward, and the oblique support frames 14 and 15 are held in an oblique posture toward the axle 7.

On the contrary, when the short sleeves 42 and 43 are guided to the lower position along the main handle arms 2 and 3, as shown in FIG. 10, the lateral support frames 38 and 39 and the oblique support frames 14 and 15 are separated from each other. , Is guided to a position close to the main handle arms 2 and 3.

In the second embodiment, as shown in FIG. 6, the diagonal support frames 14 and 15 are used to move up and down while sliding the ridge portion 37 of the stairs 36. The force acting on is in the direction indicated by the arrow Y in FIG. 9, and the force in the direction of pulling down the short sleeves 42 and 43 does not act, and the same action as that of the first embodiment shown in FIGS. Occurs.

The lower positions of the short sleeves 42 and 43 are
It is the first position occupied by the lateral support frames 38, 39, and the second position occupied by the lateral support frames 38, 39 is located above the short sleeves 42, 43.
The position.

[0037]

According to the first aspect of the invention, the oblique support frame is moved from the position near the rear end of the horizontal support frame toward the axle direction by only one operation of moving the horizontal support frame from the first position to the second position. The posture can be set, and the operation becomes simple.

The lateral extension of the lateral support frame is longer than the distance between the axle and the imaginary line connecting the rear ends of the peripheral surfaces of the left and right wheels, and the lower portion of the oblique support frame is the imaginary line. Since it is located in the vicinity of, the cart can be smoothly pulled up or pulled down without impact by simply gripping the handle in a normal walking posture when ascending or descending stairs and tilting the cart.

The laterally extending frame and the obliquely extending frame extending in the opposite direction 1
Since the folding posture can be brought close to the main handle arm only by the operation, the folding operation is remarkably simple.

According to the second aspect of the present invention, it is sufficient to rotate and bend the bending / rotating portion in the central portion of the horizontal support frame, and since there is no detachable portion, the rigidity is increased and the number of parts is increased. The effect of being the minimum and being relatively lightweight can be added to the effect of the invention of claim 1.

According to the third aspect of the invention, since it is sufficient to simply slide the short sleeve up and down by the horizontal support frame, the rigidity can be further improved while maintaining the ease of operation.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part of an example in which the inventions of claim 1 and claim 2 are implemented together.

FIG. 2 is a plan view of what is shown in FIG.

FIG. 3 is a side view of what is shown in FIG.

FIG. 4 is a rear view of what is shown in FIG.

FIG. 5 is a side view similar to FIG. 3 in the folded state of the one shown in FIG.

6 is an explanatory view of the stair climbing state of the one shown in FIG. 1. FIG.

FIG. 7 is a perspective view of an essential part of an example in which the inventions of claims 1 and 3 are implemented together.

8 is a plan view of what is shown in FIG. 7. FIG.

9 is a side view of what is shown in FIG. 7. FIG.

FIG. 10 is a side view similar to FIG. 9 in the folded state of that shown in FIG.

[Explanation of symbols]

 1 Cart 2,3 Main handle arm 4 Cargo receiving frame 5,6 Wheel 7 Axle 10,11,38,39 Horizontal support frame 12,13 Rear end 14,15 Oblique support frame 26,27 Bending rotation part 28,29 Holding stopper 32,33 Lower part of diagonal support frame 40,41 Other end 42,43 Short sleeve

Claims (3)

[Claims] 1. An axle for both left and right wheels and left and right main handle arms are provided at a rear portion of the load receiving frame. From the upper parts of the left and right main handle arms, a rearward direction opposite to the load receiving frame is provided. The lateral support frame is projected, and the projecting length is set longer than the distance between the axle and the imaginary line connecting the rear end portions of the peripheral surfaces of the left and right wheels. Is an oblique support frame extending in the direction of the axle and is rotatably supported by a fixing member on the load receiving frame side,
The lower portion of the diagonal support frame is located in the vicinity of the imaginary line connecting the rear end portions of the peripheral surfaces of the left and right wheels, and the lateral support frame brings the diagonal support frame close to the left and right main handles. A baggage cart connected to the left and right main handle arms and the diagonal support frame so as to be movable between a first position and a second position where the diagonal support frame is separated from the left and right main handles. 2. The left and right lateral support frames are rotatably connected to the left and right main handle arms and the oblique support frame at both ends, and the central part has a vertically bending turn portion and a projecting posture. The baggage cart according to claim 1, further comprising a holding stopper. 3. The left and right lateral support frames are respectively one rod, and are pivotally connected to the upper part of the oblique support frame at one end, and vertically slidable on the left and right main handle arms at the other end. It is rotatably coupled to a short sleeve that is movably fitted, and the short sleeve is located at a lower position where the horizontal support frame and the oblique support frame are brought close to the left and right main handle arms, and the horizontal support frame is directed rearward. 2. The baggage cart according to claim 1, wherein the baggage cart is slidably mounted between the upper position and the upper position in which the oblique support frame is in an oblique posture away from the left and right main handle arms.