JP3228284U - Lifting aid for trolleys with stair climbing function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ascending / descending assisting tool for a trolley with a stair elevating function, which does not require a large amount of human power to elevate the stairs even with a heavy load and does not significantly increase the weight of the trolley with the stairs elevating function. SOLUTION: The vehicle body frame 90 provided with a loading platform 91 for loading a luggage W, and a pair of left and right main body crawlers 92 attached to the rear outer side of the vehicle body frame 90. is there. It has one auxiliary crawler, and has a crawler unit 1 that is detachably mounted on the front side of the vehicle body frame 90, and an elevating auxiliary unit 3 that assists in ascending and descending stairs. [Selection diagram] Fig. 1

Description

The present invention particularly relates to an elevating assisting tool used for a trolley with a stair elevating function capable of carrying heavy loads.

Conventionally, a trolley with a stair climbing function capable of carrying a heavy load of 300 kg or more is known as shown in FIG. The bogie with a stair climbing function includes a vehicle body frame 90 provided with a loading platform 91 for loading the luggage W, and a pair of left and right crawlers 92 attached to the rear side of the vehicle body frame 90. A pair of fixed wheels 93 are provided on the outside of both crawlers 92 coaxially with the rear wheels of the crawlers 92. The fixed wheel 93 and the rear wheel of the crawler 92 are made rotatable together by a drive motor (not shown) provided on the vehicle body frame 90. Further, a pair of auxiliary legs 94 having training wheels 95 attached to the tips thereof are provided on the rear side of the vehicle body frame 90 and in front of the fixed wheels 93. The training wheels 95 can be rotated around the base end portion of the auxiliary legs 94 and lifted upward. FIG. 12 shows a state in which the carriage with the stair climbing function is traveling on the flat floor F, and can be traveled by the fixed wheels 93 and the training wheels 95. A handle 96 is attached to the tip of the vehicle body frame 90.

Next, the case of traveling on the stairs will be described with reference to FIG. First, as shown by the dotted line in FIG. 13, a trolley with a stair climbing function is erected, and the auxiliary legs 94 are rotated to lift the training wheels 95. After that, while manually returning the trolley with the stairs elevating function, the crawler 92 is placed so as to come into contact with the stairs S. Finally, by driving the electric motor, as shown in FIG. 12, the trolley with the stair climbing function can start climbing the stairs S. As described above, in this trolley with a stair elevating function, a large force is required to manually mount the crawler 92 on the stairs S, and when a heavy load is loaded, several people are required and in a dangerous case. There is also.

On the other hand, it is also conceivable to use a trolley with a stair climbing function shown in Patent Documents 1 and 2. According to these trolleys with a stair climbing function, it is considered that a large amount of human power is not required even at the beginning of climbing the stairs, and it is possible to operate with a light force even when a heavy load is loaded.

Japanese Unexamined Patent Publication No. 2005-14625 Japanese Unexamined Patent Publication No. 9-66839

However, the trolley with the stair climbing function shown in Patent Document 1 has long auxiliary legs and is not suitable for carrying heavy loads. Further, in the trolley with the stairs elevating function shown in Patent Document 2, since a long crawler is fixed, the weight of the entire trolley with the stairs elevating function increases.

The present invention has been made in view of the conventional problems, and the stair climbing function does not require a large amount of manpower to climb the stairs even for heavy luggage and does not significantly increase the weight of the trolley with the stair climbing function. It provides an lifting aid for a trolley.

In order to solve the above-mentioned problems, the feature of the lifting aid for the bogie with the stairs raising / lowering function according to claim 1 is a car body frame provided with a loading platform for loading luggage and attached to the rear outer side of the car body frame. A bogie lifting aid with a stair climbing function equipped with a pair of left and right main body crawlers, and a crawler unit having one or more auxiliary crawlers and detachably mounted on the front side of the vehicle body frame. It is to have an ascending / descending assisting unit that assists in ascending / descending stairs.

The feature of the elevating auxiliary tool for a trolley with a stair elevating function according to claim 2 is that the crawler unit abuts on the lower surfaces of the side frames arranged at the left and right ends of the body frame and is arranged perpendicular to the side frame. A support plate in which two plate-shaped crawler plates and two central portions of the crawler plates are vertically connected and fixed to the crawler plate, and a support plate rotatably supported by the support plate 1 It has one or a plurality of auxiliary crawlers, and attachment portions provided on the upper surfaces of both ends of the crawler plate and detachably attaching the crawler plate to the side frame.

The feature of the elevating assisting tool for a trolley with a stair elevating function according to claim 3 is that the elevating assist unit is in contact between the upper rise and the lower tread, or between the lowermost rise and the floor. The stepper main body is composed of a stepper main body and a plurality of adjustment plates, and the stepper main body has a side plate having a substantially obtuse triangle and a slope portion on which the auxiliary crawler rolls on the upper surface, and the adjustment plate is the adjustment plate. It is attached to the lower surface of the stepper body, and the height of the stepper body can be adjusted.

The feature of the lifting aid for a trolley with a stair climbing function according to claim 4 is that the adjusting plate comprises a plate main body and a magnet fixed to the plate main body, and the lower surface portion of the stepper main body has the adjustment. The adjusting table on which the magnet of the plate is magnetized is rotatably attached parallel to the slope portion and around the axis in the horizontal direction.

In the elevating auxiliary tool for a bogie with a stair elevating function according to claim 1, the stairs can be elevated by the main body crawler and the auxiliary crawler attached to the rear outer side of the vehicle body frame. In particular, at the beginning and end of the stairs, the trolley with the stairs elevating function can be put on and off the stairs without human power with the help of the elevating assist unit. Further, the auxiliary crawler is detachably attached to the front side of the vehicle body frame as a crawler unit. As a result, the auxiliary crawler can be attached only when ascending and descending the stairs, and the auxiliary crawler can be removed when traveling on a flat ground. Therefore, the weight increase of the trolley with the ascending and descending function is not so much. Therefore, according to the elevating auxiliary tool for the trolley with the stair elevating function of the present invention, even a heavy load does not require a large amount of manpower to elevate the stairs and does not significantly increase the weight of the trolley with the stair elevating function. The elevating assist unit reduces the steps of the stairs by at least 3 or 4 steps. For example, a long steel plate that abuts on a plurality of stairs or a staircase that is placed on a riser. It is possible to reduce the step difference.

In the lifting aid for a bogie with a stair climbing function according to claim 2, a support plate that rotatably supports the auxiliary crawler connects the central portions of the two crawler plates and is vertically fixed to the crawler plate. There is. Further, attachment portions for detachably attaching the crawler plate to the side frame are provided on the upper surfaces of both ends of the two crawler plates. As a result, the auxiliary crawler can be easily attached to and detached from the vehicle body frame as a crawler unit. Further, since the auxiliary crawler is located at the center of the crawler plate, the locus of the auxiliary crawler and the locus of the main body crawler do not overlap. Therefore, it is possible to prevent the elevating assist unit and the main body crawler from interfering with each other when ascending and descending stairs, facilitating the handling of the elevating assist unit, and avoiding danger.

In the elevating assisting tool for a trolley with a stair elevating function according to claim 3, the elevating assist unit is composed of a stepper main body and a plurality of adjustment plates. Since the side plate of the stepper body has an obtuse-angled triangular shape, the stepper is not at a right angle between the upper rise and the lower tread, or between the lower rise and the floor. The main body can surely come into contact with the rise. Further, by adjusting by combining a plurality of adjustment plates, it is possible to reduce the step between the stepper main body and the tread surface of the upper step even if the stairs have different rise lengths. As a result, the auxiliary crawler can smoothly move up and down between the stepper body and the stairs, and the stairs are less likely to be damaged.

In the lifting aid for a trolley with a stair climbing function according to claim 4, the adjusting table in which the magnet of the adjusting plate is magnetically attached to the lower surface of the stepper body rotates parallel to the slope and around the axis in the horizontal direction. It is installed as possible. Therefore, the lower surface of the adjusting plate can be reliably brought into close contact with the tread surface or the floor. As a result, the stepper body is stabilized, the auxiliary crawler can move up and down more smoothly between the stepper body and the stairs, and the stairs are less likely to be damaged.

A side view of a trolley with a stair climbing function provided with the lifting aid of the embodiment. A side view of the crawler unit according to the lifting aid of the embodiment. Top view of the crawler unit according to the lifting aid of the embodiment. The rear view of the crawler unit pertaining to the lifting aid of the embodiment. The rear view of another crawler unit related to the lifting aid of the embodiment. A side view of the elevating assist unit according to the elevating assist tool of the embodiment. The rear view of the elevating assist unit according to the elevating assist tool of the embodiment. Top view of the adjustment plate according to the lifting aid of the embodiment. The figure which concerns on the elevating assisting tool of embodiment, and put the elevating auxiliary unit on the stairs. The figure which shows the state of the stairs start of the trolley with the stairs elevating function provided with the elevating auxiliary tool of embodiment. The figure which shows the state of the stairs start of the trolley with the stairs elevating function provided with the elevating auxiliary tool of embodiment. A side view showing a state of traveling on a flat ground with a conventional trolley with a stair climbing function. A side view showing the state of starting to climb the stairs in relation to the conventional trolley with the stair climbing function.

An embodiment of the lifting aid for a trolley with a staircase elevating function according to the present invention embodied in a trolley with a staircase elevating function will be described below with reference to the drawings. FIG. 1 is a side view of a trolley with a stairs elevating function provided with the elevating assisting tool, and is a state before climbing the stairs S. However, the conventional trolleys with the stair climbing function shown in FIGS. 12 and 13 are used, and the same reference numerals are used for the same configuration, and the description thereof will be omitted.

This elevating assisting tool has a crawler unit 1 and an elevating assisting unit 3. The crawler unit 1 is detachably attached to the front side of the body frame 90 of the bogie with a stair climbing function. Specifically, the crawler unit 1 is detachably attached to side frames 90a arranged at both left and right ends of the vehicle body frame 90 by bolts 2 with knobs. In addition, three elevating assist units 3 that assist in ascending and descending stairs come into contact with each other between the upper rise S1 of the stairs S and the lower tread surface S2, and between the lowermost rise S1 and the floor F. It is placed. The training wheels 95 are in a state in which the auxiliary legs 94 are rotated and lifted.

As shown in FIGS. 2 to 4, the crawler unit 1 has two crawler plates 10, a support plate 11, an auxiliary crawler 15, and a flange portion 10a as a mounting portion. However, FIG. 2 is a side view of the crawler unit, and FIG. 3 is a plan view of the crawler unit. Further, FIG. 4 is a rear view of the crawler unit. The crawler plate 10 has a substantially rectangular plate shape, and when the crawler unit 1 is attached to the vehicle body frame 90, it abuts on the lower surface of the side frame 90a and is arranged vertically to the side frame 90a. The support plate 11 has a U-shaped cross section, and the central portions of the two crawler plates 10 are vertically connected and fixed to the crawler plates 10. Further, one auxiliary crawler 15 is rotatably supported by the support plate 11. Further, flange portions 10a are vertically projected on the upper surfaces of both ends of the two crawler plates 10. The flange portion 10a is provided with a bolt hole 10b through which a bolt with a knob 2 is inserted.

In this crawler unit 1, both ends of the crawler plate 10 are brought into contact with predetermined positions on the lower surface of the side frames 90a arranged at the left and right ends of the vehicle body frame 90, and the bolts with knobs 2 are brought into contact with the bolt holes 10b and the bolts of the side frame 90a. It can be attached to the vehicle body frame 90 by inserting it into a hole (not shown) and fixing it with a nut. Further, the crawler unit 1 can be easily removed from the vehicle body frame 90 by removing the bolt with knob 2.

Instead of the crawler unit 1, the crawler unit 5 shown in FIG. 5 can be used. In the crawler unit 5, a crawler plate 12 is used instead of one of the crawler plates 10. The crawler plate 12 has a rectangular plate shape, and mounting plates 13 as mounting portions are detachably mounted on the upper surfaces of both ends by bolts 14. Then, the side frame 90a of the vehicle body frame 90 is inserted into the space 13a between the mounting plate 13 and the crawler plate 12. Other configurations such as the other crawler plate 10 and the like are the same as those of the crawler unit 1.

In the crawler unit 5, both ends of the crawler plates 10 and 12 are brought into contact with a predetermined position on the lower surface of the side frame 90a of the vehicle body frame 90, and the side frame 90a is inserted into the space 13a between the mounting plate 13 and the crawler plate 12 for mounting. The plate 13 is attached with bolts 14. The other crawler plate 10 is attached to the vehicle body frame 90 by the bolt with knob 2. At this time, if a hole for attaching the handle 96 to the side frame 90a is used as the bolt hole of the side frame 90a through which the bolt with knob 2 is inserted, it is not necessary to make a bolt hole in the side frame 90a. In this way, the crawler unit 5 can be attached without modifying the existing trolley with the stair climbing function.

As shown in FIGS. 6 and 7, the elevating assist unit 3 is composed of a stepper main body 30 and a plurality of adjustment plates 35 and 36, and when used, between the upper rise S1 and the lower tread S2. Alternatively, it is placed in contact with the lowermost rise S1 and the floor F. The stepper main body 30 has a side plate 31 made of a steel plate having a substantially obtuse angle triangle, and a slope portion 32 made of a steel plate on which the auxiliary crawler 15 rolls on the upper surface. Since the side plate 31 has a substantially obtuse-angled triangular shape, even if the upper rise S1 and the lower tread surface S2 or the lowermost rise S1 and the floor F are not at right angles. The side plate 31 can be reliably brought into contact with the rise S1. The side plate 31 is provided with elongated holes 31a for reducing the weight and making it easy to carry. Further, a non-slip pattern is formed on the slope portion 32. The slope portion 32 is not limited to a perfect flat surface, and may be a slightly curved surface.

The width of the stepper body 30 is about 1 to 5 times the width of the auxiliary crawler 15, and the weight of the elevating auxiliary unit 3 as a whole can be reduced. Further, since the width of the stepper main body 30 is small and the auxiliary crawler 15 is located at the center of the crawler plate 10, the main body crawler 92 does not hit the elevating auxiliary unit 3 when going up and down the stairs S. As a result, there is no problem even if the elevating assist unit 3 is placed on the stairs S, the elevating assist unit 3 can be easily handled, and danger can be avoided.

Further, an adjusting table 33 is attached to the lower surface of the stepper main body 30. The adjusting table 33 is made of a steel plate, and includes a rectangular plate-shaped bottom surface 33a and side surfaces 33b bent at right angles to both ends of the bottom surface 33a. Then, by attaching the side surface 33b to the side plate 31 by the bolt 34, the adjusting table 33 is rotatably attached parallel to the slope portion 32 and around the axis X in the horizontal direction. The shaft portion of the bolt 34 is composed of a cylindrical portion having a predetermined length and a screw portion.

As shown in FIG. 8, the adjusting plates 35 and 36 are composed of resin plate bodies 35a and 36a and magnets 37 embedded in the plate bodies 35a and 36a by press fitting. As shown in FIG. 9, the adjustment plates 35 and 36 are attached to the adjustment base 33 by magnetizing the magnet 37 to the adjustment base 33, and the height of the stepper main body 30 can be adjusted. Further, by magnetizing the magnets 37 to each other, the adjusting plates 35 and 36 can be stacked and attached to the adjusting table 33. As a result, it is possible to cope with various stairs S having different heights of the rise S1. Further, since the adjusting table 33 can rotate about the axis X, when the adjusting plates 35 and 36 are attached to the adjusting table 33, the lower surfaces of the adjusting plates 35 and 36 are brought into close contact with the floor F or the tread surface S2. The stepper body 30 can be stabilized. In this embodiment, two adjustment plates 35 and 36 are used, but the number of adjustment plates is not limited to two and may be three or more.

The operation of starting the ascent of the stairs S when the carriage with the stairs elevating function using the elevating auxiliary tool having the above configuration is moved up and down the stairs will be described. First, in front of the stairs S, the crawler unit 1 is mounted on the front side of the body frame 90 of the carriage with the stairs elevating function. Specifically, the bolts 2 with knobs are inserted into the bolt holes 10b provided in the flange portion 10a of the crawler plate 10 and the bolt holes of the side frames 90a arranged at the left and right ends of the vehicle body frame 90 with nuts. stop. Further, the three elevating auxiliary units 3 are placed in contact with each other between the upper rise S1 of the stairs S and the lower tread surface S2, and between the lowermost rise S1 and the floor F. As a result, the state shown in FIG. 1 is obtained.

When the drive motor provided on the vehicle body frame 90 is driven, the main body crawler 92 is driven, and the auxiliary crawler 15 of the crawler unit 1 comes into contact with the slope portion 32 of the elevating auxiliary unit 3. Further, when the drive motor is driven, as shown in FIG. 10, the auxiliary crawler 15 and the main body crawler 92 ascend the stairs S with the help of the elevating auxiliary unit 3. Then, as shown in FIG. 11, the carriage with the stairs elevating function climbs the stairs S only by the main body crawler 92. After that, the trolley with the stairs elevating function can ascend the stairs S without the help of the elevating assist unit 3. Further, the operation at the end of the descent of the stairs S of the carriage with the stairs elevating function is omitted because it is the reverse of the above description. The operations other than the start of climbing and the end of descent of the stairs S of the carriage with the stair climbing function are the same as in the conventional case. Further, in the present embodiment, the number of auxiliary crawlers 15 is one, but two or more auxiliary crawlers 15 may be provided.

In the lift auxiliary tool for a bogie with a stair lift function according to the embodiment, the stairs S can be lifted and lowered by the main body crawler 92 and the auxiliary crawler 15 attached to the rear outer side of the vehicle body frame 90. In particular, at the beginning and end of the stairs S, with the help of the elevating assist unit 3, the trolley with the stairs elevating function can be placed on and down the stairs S without human power. Further, the auxiliary crawler 15 is detachably attached to the front side of the vehicle body frame 90 as the crawler unit 1. As a result, the auxiliary crawler 15 can be attached only when ascending and descending the stairs, and the auxiliary crawler 15 can be removed when traveling on a flat ground. Therefore, the weight increase of the trolley with the ascending and descending function is not so much. Therefore, according to the elevating assisting tool for the trolley with the stair elevating function of the present invention, even a heavy load does not require a large amount of manpower to elevate the stairs, and the weight of the trolley with the stair elevating function is not significantly increased.

Further, in this lifting aid for a trolley with a stair climbing function, a support plate 11 that rotatably supports the auxiliary crawler 15 connects the central portions of the two crawler plates 10 and is vertically fixed to the crawler plate 10. ing. Further, flange portions 10a for detachably attaching the crawler plate 10 to the side frame 90a are provided on the upper surfaces of both ends of the two crawler plates 10. As a result, the auxiliary crawler 15 can be easily attached to and detached from the vehicle body frame 90 as the crawler unit 1. Further, since the auxiliary crawler 15 is located at the center of the crawler plate 10, the locus of the auxiliary crawler 15 and the locus of the main body crawler 92 do not overlap. Therefore, it is possible to prevent the elevating assisting unit 3 and the main body crawler 92 from interfering with each other when ascending and descending stairs, facilitating the handling of the elevating assisting unit 3, and avoiding danger.

Further, in this lifting / lowering assisting tool for a trolley with a stairs raising / lowering function, the lifting / lowering assisting unit 3 is composed of a stepper main body 30 and a plurality of adjusting plates 35 and 36. Since the side plate 31 of the stepper body 30 has a substantially obtuse-angled triangular shape, when the upper rise S1 and the lower tread surface S2 or the lowermost rise S1 and the floor F are not at right angles. Even so, the stepper body 30 can surely come into contact with the rise S1. Further, by adjusting by combining a plurality of adjustment plates 35 and 36, even if the stairs S have different lengths of the rise S1, the step between the stepper main body 30 and the upper tread surface S2 can be reduced. Can be done. As a result, the auxiliary crawler 15 can smoothly move up and down between the stepper body 30 and the stairs S, and the stairs S are less likely to be damaged.

Further, in this lifting aid for a trolley with a stair climbing function, the adjusting base 33 in which the magnets 37 of the adjusting plates 35 and 36 are magnetically attached to the lower surface of the stepper main body 30 is parallel to the slope portion 32 and the axis in the horizontal direction. It is rotatably attached around X. Therefore, the lower surfaces of the adjusting plates 35 and 36 can be reliably brought into close contact with the tread surface S2 or the floor F. As a result, the stepper main body 30 is stabilized, the auxiliary crawler 15 can move up and down more smoothly between the stepper main body 30 and the stairs S, and the stairs S are less likely to be damaged.

The elevating assisting tool for the trolley with the stairs elevating function of the present invention has been described above according to the embodiment, but the present invention is not limited to these, and is appropriately modified as long as it does not contradict the technical idea of the present invention. Needless to say, it can be applied.

1, 5 ... Crawler unit, 3 ... Lifting assistance unit, 10, 12 ... Crawler plate, 10a, 13 ... Mounting part (10a ... Flange part, 13 ... Mounting plate), 11 ... Support plate, 15 ... Auxiliary crawler, 30 ... Stepper body, 31 ... Side plate, 32 ... Slope, 33 ... Adjustment table, 35, 36 ... Adjustment plate, 35a, 36a ... Plate body, 37 ... Magnet, 90 ... Body frame, 90a ... Side frame, 91 ... Loading platform, 92 ... Main body crawler, S1 ... Rise, S2 ... Tread, F ... Floor, W ... Luggage, X ... Axis.

Claims (4)

A bogie lifting aid with a stair climbing function, which includes a vehicle body frame provided with a loading platform for loading luggage and a pair of left and right main body crawlers attached to the rear outer side of the vehicle body frame.
A crawler unit that has one or more auxiliary crawlers and is detachably mounted on the front side of the vehicle body frame.
An elevating assist device for a trolley with a stair elevating function, which is characterized by having an elevating assist unit that assists in ascending and descending stairs. The crawler unit is in contact with the lower surfaces of the side frames arranged at the left and right ends of the vehicle body frame, and is formed by two plate-shaped crawler plates arranged perpendicular to the side frame.
A support plate in which the central portions of the two crawler plates are vertically connected and fixed to the crawler plates,
With one or more auxiliary crawlers rotatably supported by the support plate,
The lifting aid for a trolley with a stair climbing function according to claim 1, further comprising mounting portions provided on the upper surfaces of both ends of the crawler plate and to which the crawler plate is detachably attached to the side frame. The elevating assist unit comprises a stepper main body and a plurality of adjustment plates that are placed in contact with each other between the upper rise and the lower tread, or between the lower rise and the floor.
The stepper main body has a side plate having a substantially obtuse angle triangle and a slope portion on which the auxiliary crawler rolls on the upper surface.
The lifting aid for a trolley with a stair climbing function according to claim 1 or 2, wherein the adjusting plate is attached to a lower surface portion of the stepper main body and the height of the stepper main body can be adjusted. The adjustment plate comprises a plate body and a magnet fixed to the plate body.
An adjusting table on which the magnet of the adjusting plate is magnetically attached is attached to the lower surface portion of the stepper main body in parallel with the slope portion and rotatably around the axis in the horizontal direction. The lifting aid for a trolley with a stair climbing function according to claim 3.

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