JP6434448B2 - Manual carrier and endless track type traveling device used therefor - Google Patents

Description

The present invention, the cart (so-called Nekoguruma) Carts, for elderly wheelbarrow and manual vehicles (so-called silver car) or the like, to infinite track Shikihashi line device that is used in this manual vehicles Is.

Conventionally, a pair of sliding members with endless belts wrapped around an endless track in the shape of an endless track are mounted in parallel on both sides of the vehicle body, and a cargo bed is supported on the vehicle body so as to be tiltable in the front-rear direction. A manual transport vehicle in which is formed is disclosed (for example, see Patent Document 1). In this manual transport vehicle, a roller that presses against the circumferential surface of the endless belt by the load and brakes the circulation is provided on the loading platform. The sliding member has the same structure as a glass ski known as a sport that slides down an inclined surface with a lawn. That is, the sliding member has a longitudinal annular guide ring fixed integrally around the stay connected to the mounting plate via a connecting piece having a gate shape in cross section, and a plurality of sliding pieces are belted around the guide ring. Thus, an endless belt having an endless track shape connected at regular intervals is wound so as to be able to go around.

In a manual transport vehicle constructed in this way, a pair of sliding members wrapped around an endless track with endless tracks around them are mounted on both sides of the vehicle body, which makes it possible to run on stairs and keep the loading platform horizontal. As a result, heavy loads can be easily transported to the destination without falling on the loading platform. In addition, when the stairs are raised and lowered, the load of the loading platform is applied to the peripheral surface of the endless belt via a roller, so that the circulation of the endless belt is braked. The labor can be reduced.

Japanese Patent Laid-Open No. 05-85366 (Claim 1, Claim 2, Paragraphs [0010], [0022], [0023], FIGS. 1 to 3)

  In the conventional manual transport vehicle disclosed in Patent Document 1, a plurality of sliding pieces are connected around the guide ring by a belt at a constant interval, and thus the plurality of sliding pieces slide relative to the guide ring. For this reason, in the manual carrier shown in the above-mentioned conventional patent document 1, when mud, ice, frozen snow, etc. adhere to the surface of the guide ring on which the plurality of sliding pieces slide, the plurality of sliding pieces are guided. There is a problem that the endless belt cannot slide smoothly along the guide ring because it does not slide with respect to the ring.

A first object of the present invention is a manual carrier that can be smoothly traveled even on a rough road that is not paved, a road with weeds, or a cold or cold road where water freezes, and a manual carrier that can be used for the same. It is in providing an endless track type traveling device. A second object of the present invention, the strength of the convex portion of the endless track chain can be improved, it is possible to improve the durability of the endless track chain Thus, if the endless track chain formed by plastic, the outer periphery of the endless track chain An object of the present invention is to provide a manual carrier and an endless track type traveling device used therefor, in which it is not necessary to form recesses for preventing sink marks on the surface, thereby preventing intrusion of mud or the like into the outer peripheral surface of the endless track chain. . A third object of the present invention is to provide a manual carrier that can be used for a manual carrier that can hardly deteriorate with age and can improve durability even if the difference between the temperature and the temperature is intense, or even when irradiated with sunlight or ultraviolet rays. It is in providing an endless track type traveling device. A fourth object of the present invention can form an endless track chain by ligation of one or three parts, with the part of the endless track chain can very easily or relatively easily managed, very simple endless track chain It is an object of the present invention to provide a manual carrier and an endless track traveling device used therefor, which can be assembled by a simple operation or a relatively simple operation.

The fifth object of the present invention is a state in which the endless track chain has sufficient strength to withstand severe use, and the endless track chain slides against the front roller, the rear roller and the intermediate roller. It is an object of the present invention to provide an endless track type traveling device that can avoid rotating at the same time and thereby prevent early wear of parts. The sixth object of the present invention is to suppress the intrusion of sand and dust into the gap between the connecting pin of the connecting piece of the endless track chain and the through hole of the cylindrical protrusion, and the front concave line such as mud and pebbles, An object of the present invention is to provide an endless track traveling device that can prevent accumulation on a rear groove or an intermediate groove. A seventh object of the present invention is to provide a manual transporter that can smoothly travel on snow or lawn, and an endless track travel device used therefor. An eighth object of the present invention is to provide a manual carrier and an endless track type traveling device used therefor that allow forward movement and prevent reverse movement. The ninth object of the present invention is to absorb the undulations of the road surface by the endless track type traveling device following the undulating road surface while keeping the loading platform horizontal, thereby transporting the luggage in a stable state. An object is to provide a manual carrier and an endless track traveling device used therefor. A tenth object of the present invention is to provide a manual carrier that can turn left or right relatively smoothly and an endless track traveling device used therefor.

As shown in FIGS. 1, 3 to 5 and 7, the first aspect of the present invention travels by a load carrier 11 on which a load is placed, and an endless track chain 12 detachably attached to the lower portion of the load carrier 11. a crawler type traveling device 13, a manual carrying device 10 which includes a handle member 14 provided on the bed 11 the operator grips, the crawler traveling device 13, removably at the bottom of the bed 11 A traveling base 16 to be attached, and a front roller 18 in which a front concave portion 18b having a V-shaped cross section extending in a circumferential direction is formed on the outer peripheral surface of the traveling base 16 so as to be rotatable via a front shaft 17 on the front portion. A rear roller 23 that is rotatably attached to the rear portion of the traveling base portion 16 via a rear shaft 19 and has a V-shaped rear recess 23b that extends in the circumferential direction on the outer peripheral surface; Front roller 18 and rear row A cross-sectional V-shape that is formed smaller than the outer diameter of 23 and rotatably mounted between the front roller 18 and the rear roller 23 of the traveling base 16 via the intermediate shafts 21 and 22 and extends circumferentially on the outer peripheral surface. The intermediate grooves 31b, 32b having intermediate grooves 31b, 32b, and the front rollers 18b, the rear grooves 23b, which are stretched between the front rollers 18 and the rear rollers 23 and spaced in the longitudinal direction on the inner peripheral surface. And the endless track chain 12 formed with a plurality of tapered protrusions 27 that can be engaged with the intermediate recesses 31b and 32b, and each of the plurality of protrusions 27 formed on the endless track chain 12 includes: endless track chain 12 in the longitudinal direction are formed respectively at an interval in the front concave 18b, the rear concave 23b and the intermediate concave 31b, it plate-shaped tapered corresponding to 32b cross section V-shaped And formed a single or a plurality of plate pieces 27a, provided so to intersect the plate pieces 27a for reinforcement longitudinally are extending forming plate piece 27a of the endless track chain 12 and plate pieces 27a integrally It consists of a single or a plurality of ribs 27b.

The second aspect of the present invention is an invention based on the first aspect. As shown in FIG. 5, the front roller 18, the rear roller 23, the intermediate rollers 31, 32, and the endless track chain 12 are weather resistant. It is characterized by being formed by plastics having properties. In the present specification, the weather-resistant plastic has the property that it is difficult to cause deformation, discoloration, deterioration, etc., due to differences in temperature and / or irradiation with sunlight, ultraviolet rays, etc. when used outdoors. Say plastic.

The third aspect of the present invention is an invention based on the first or second aspect, and as shown in FIGS. 3 to 5, the endless track chain 12 is a plurality of one type of the same shape and the same size. The connecting pieces 28 are sequentially connected to each other, and each of the plurality of connecting pieces 28 is integrally formed with a belt portion 28a formed in a flexible rectangular plate shape and one end of the belt portion 28a. A first thick plate portion 28b formed in a rectangular plate shape that is thicker than the belt portion 28a, and a second thick plate formed integrally in the other end of the belt portion 28a and formed in a rectangular plate shape thicker than the belt portion 28a. A plurality of protrusions 28d projecting on one surface of the portion 28c, the second thick plate portion 28c, and a plurality of protrusions 28d of the adjacent connecting piece 28 formed on the first thick plate portion 28b. Locking hole 28e and the convex portion 2 projecting from the other surface of the second thick plate portion 28c. The plurality of protrusions 28d of the connecting piece 28 are locked in the plurality of locking holes 28e of the connecting piece 28 adjacent to the connecting piece 28, and the plurality of protrusions 28d of the adjacent connecting piece 28 are adjacent to the connecting piece 28. The endless track chain 12 is configured by repeating a locking structure in which the connecting piece 28 is further locked to a plurality of locking holes 28e of the connecting piece 28 adjacent to the connecting piece 28.

A fourth aspect of the present invention is an invention based on the first or second aspect, and as shown in FIGS. 9 and 10, the endless track chain 72 is formed into a flexible rectangular plate shape. The plurality of belt pieces 73 and the receiving plate 74 formed in a rectangular plate shape thicker than the belt piece 73 are sequentially connected, and the plurality of belt pieces 73 are separated from the receiving plates 74 by a plurality of presser plates 76. Are formed endlessly by blocking each of them, a first insertion hole 73a is formed on one end side of the plurality of belt pieces 73, and a second insertion hole 73b is formed on the other end side of the plurality of belt pieces 73, respectively. First projections 74a into which the second or first insertion holes 73b, 73a of the belt piece 73 can be fitted are respectively provided at one end of one surface of the plurality of receiving plates 74, and one surface of the plurality of receiving plates 74 is provided. Adjacent to the belt piece 73 on the other end side Second protrusions 74 b that can be inserted into the first or second insertion holes 73 a and 73 b of the belt piece 73 are provided so as to protrude from the first protrusions 74 a on one end side of the plurality of presser plates 76. A hole 76b is formed, a second locking hole 76c that can be locked to the second protrusion 74b is formed on the other end side of the plurality of presser plates 76, and the convex portion 27 is formed on the other surface of the plurality of receiving plates 74, respectively. The second insertion hole 73b of the belt piece 73 is inserted into the first protrusion 74a of the receiving plate 74, and the first insertion of the belt piece 73 adjacent to the belt piece 73 is inserted into the second protrusion 74b of the receiving plate 74. With the hole 73a inserted, the first and second protrusion holes 74b and 76c of the presser plate 76 are respectively engaged with the first and second protrusions 74a and 74b of the receiver plate 74, and next to the receiver plate 74. The belt piece 73 adjacent to the first protrusion 74a of the receiving plate 74 In the state where the second insertion hole 73b is inserted, and the first insertion hole 73a of the belt piece 73 further adjacent to the adjacent belt piece 73 is inserted into the second protrusion 74b of the adjacent receiving plate 74, the adjacent receiving plate 74b. An endless track chain is obtained by repeating a locking structure in which the first and second locking holes 76b and 76c of the pressing plate 76 adjacent to the pressing plate 76 are locked to the first and second protrusions 74a and 74b of the plate 74, respectively. 72 is configured.

The fifth aspect of the present invention is an invention based on the first aspect, and as shown in FIGS. 11 to 17, the endless track chain 92 has a plurality of same-shaped and large-sized connection pieces 98 made of metal. Each of the plurality of connecting pieces 98 is formed in a rectangular plate shape, and a belt portion 98a of one end surface of the belt portion 98a. A pair of columnar protrusions 98b, 98b each formed with a pair of through-holes 98d, 98d projecting parallel to each other in the direction away from the belt portion 98a at both ends in the width direction, and into which the connecting pin 99 can be loosely inserted. The other end surface of the belt portion 98a is protruded from the center portion in the width direction of the belt portion 98a in a direction away from the belt portion 98a and inserted between the pair of columnar protrusions 98b and 98b of the adjacent connecting piece 98. And the core is A columnar portion 98c is formed on the outer peripheral surface of the front roller 108, the rear roller 103, and the intermediate rollers 101, 102. The columnar portion 98c is formed with a through hole 98e that is coincident with the pair of through holes 98d, 98d and into which the connecting pin 99 can be press-fitted. A plurality of recesses 108e, 103e, 101e, 102e capable of accommodating a part of the pair of columnar protrusions 98b, 98b are formed at equal intervals in the circumferential direction, respectively, and the front recess 108b, the rear recess 103b, and the intermediate recess A plurality of partition walls 108f, 103f, 101f, 102f partitioning the inside of these concave stripes 108b, 103b, 101b, 102b into 101b, 102b are provided in the circumferential direction of the front roller 108, the rear roller 103, and the intermediate rollers 101, 102, etc. Formed radially so that the tip faces the plurality of recesses 108e, 103e, 101e, 102e at intervals. With the columnar portion 98c of the connecting piece 98 adjacent to the connecting piece 98 inserted between the pair of cylindrical protrusions 98b, 98b of the connecting piece 98, the connecting pin 99 is connected to the pair of through holes 98d of the connecting piece 98. The connection piece 98 adjacent to the connection piece 98 is engaged with the connection piece 98 by loosely inserting into 98d and press-fitting into the through hole 98e of the connection piece 98 adjacent to the connection piece 98. In the state where the columnar portion 98c of the connecting piece 98 further adjacent to the adjacent connecting piece 98 is inserted between the pair of columnar protrusions 98b, 98b, the connecting pin 99 different from the connecting pin 99 is connected to the adjacent connecting piece. By inserting into the through hole 98e of the connecting piece 98 which is loosely inserted into the pair of 98 through holes 98d and 98d and further adjacent to the adjacent connecting piece 98, the adjacent connecting piece 98 is further inserted into the adjacent connecting piece 98. next to The endless track chain 92 is configured by repeating the locking structure of locking the connecting piece 98 in contact therewith.

  The sixth aspect of the present invention is an invention based on the fifth aspect, and as shown in FIGS. 11 to 14, the front roller 108, the rear roller 103, and the middle of the belt portion 98 a of the connecting piece 98. A surface opposite to the surface that contacts the outer peripheral surface of the rollers 101 and 102 is covered with a rectangular plate 104, and a cover portion that covers the end surfaces of the pair of columnar protrusions 98 b and 98 b of the connecting piece 98 on the plate 104. 104 a is provided integrally with the plate 104.

  A seventh aspect of the present invention is an invention based on the first aspect, and as shown in FIGS. 1, 2, 5, and 6, further, as shown in FIG. 1, FIG. 2, FIG. 5, and FIG. A plurality of front windows 18e, rear windows 23e, and intermediate windows 31e, 32e communicating with the front grooves 18b, the rear grooves 23b, and the intermediate grooves 31b, 32b are formed on the outer surface of 32, respectively. .

An eighth aspect of the present invention is an invention based on the first or second aspect, and further includes a sled member 111 capable of sliding on snow or grass as shown in FIGS. A sled member 111 is formed with a front part or a front part and a rear part curved upward, a flat part at the center, and a sliding part 111a capable of sliding on snow or grass, and a front roller formed at the center of the sliding part 111a. the endless track chain 92 passed over the 108 and the rear roller 103 and loosely inserted capable endless track chain loose insertion hole 111b, shaft before projecting from the periphery of the endless track chain loose insertion hole 111b of the sliding portion 111a, A plurality of attachment portions 111c that are loosely fitted to both ends of the rear shaft and the intermediate shaft, and the front shaft 17, the rear shaft 19, and both ends of the intermediate shafts 21, 22 on the pair of side pieces 116b, 116b of the traveling base portion 116. Insertable pair A front hole 116c, a pair of rear holes 116d, and a pair of intermediate holes 116e, 116f are formed, respectively, and a front boss 116h, a rear boss 116i, and an intermediate boss 116j, around the front hole 116c, the rear hole 116d, and the intermediate holes 116e, 116f, 116k is provided integrally with the traveling base 116 toward the outside of the pair of side pieces 116b, 116b, and the front flange 116m, the rear flange 116n, and the middle at the tips of the front boss 116h, the rear boss 116i, and the intermediate boss 116j, 116k. With the flanges 116p and 116q provided integrally with the traveling base portion 116, the bottom surface of the sliding portion 111a is in an endless track with the plurality of attachment portions 11c fitted to the front boss 116h, the rear boss 116i, and the intermediate bosses 116j and 116k. To be positioned between the lower horizontal portion of the chain 113 and the intermediate shafts 21 and 22 And characterized in that it is configured.

Ninth aspect of the present invention is an invention based on the first aspect, further as shown in FIG. 23, abutting stoppers 161 provided tip proximal end is attached to the traveling base 16 in the endless track chain 12 is characterized in that the stopper 161 is configured to one rotation of the endless track chain 12 to prevent rotation of the other allowable vital endless track chain 12.

A tenth aspect of the present invention is an invention based on the first aspect, and further, as shown in FIGS. 1, 5, and 7, a notch 33b or a loading platform side through hole is formed in the lower portion of the loading platform 11. An upper bracket 33 is attached, and a lower bracket 34 is attached to the upper portion of the traveling base 16 and is formed with a traveling side through hole 34c that faces the upper bracket 33 and communicates with the notch 33b or the loading platform side through hole. The lower bracket 34 is engaged with the bracket 33 so that the notch 33b or the loading platform side through hole and the traveling side through hole 34c are aligned with each other, and the horizontal pin 38 is inserted into the notch 33b or the loading platform side through hole and the traveling side through hole 34c. The loading platform 11 is attached to the endless track traveling device 13 by being inserted.

  The eleventh aspect of the present invention is an invention based on the tenth aspect, and as shown in FIGS. 26 to 28, a horizontal turning mechanism 245 is provided between the traveling base 236 and the lower bracket 34, A turning support plate 246 provided with a support protrusion 246a or a support protrusion, which is attached to the upper surface of the traveling base 236 and slidably receives the lower surface of the lower bracket 34, and the turning support plate 246 and the lower bracket. And a vertical shaft 247 that is rotatably inserted into the lower bracket 34.

A twelfth aspect of the present invention is an endless track traveling device 13 used in the manual carrier 10 according to any one of the first to eleventh aspects as shown in FIGS. 1 and 7.

In the manual carrier of the first aspect of the present invention, the plurality of convex portions of the endless track chain spanned between the front roller and the rear roller are a front groove of the front roller, a rear groove of the rear roller, and Since the front groove, the rear groove, and the intermediate groove are formed in a comparatively large V-shaped cross section, they are engaged with the intermediate groove of the intermediate roller, so that mud, grass, water, etc. Even if the ink enters, it is quickly discharged by the rotation of the front roller, the rear roller and the intermediate roller. As a result, the manual transporter can smoothly travel on a rough road that is not paved, a saddle road with weeds, or a cold or cold road where water freezes.

The intensity of the first in the aspect of hand-carrying device, since the plurality of protrusions of the plate piece formed on the inner peripheral surface of the endless track chain is reinforced by the ribs, the convex portion of the endless track chain of the present invention Can be improved. As a result, the durability of the endless track chain can be improved. Further, when the endless track chain is made of plastic, if the convex portion formed on the inner peripheral surface of the endless track chain is formed in a block shape, it is necessary to form a sink preventing recess on the outer peripheral surface of the endless track chain. In this case, there is a risk that mud, pebbles, etc. may enter the clogging recesses formed on the outer peripheral surface of the endless track chain and become clogged. In contrast, in the present invention, since the convex portion formed on the inner peripheral surface of the endless track chain is formed by both crossed the plate-like member that plate piece and the ribs, the outer peripheral surface of the endless track chain There is no need to form a depression for preventing sink marks. As a result, mud, pebbles, etc. do not enter the outer peripheral surface of the endless track chain, and mud, pebbles, etc. are not clogged.

In the manual carrier according to the second aspect of the present invention, the front roller, the rear roller, the intermediate roller, and the endless track chain are formed of weather-resistant plastics, respectively, so that even if the temperature difference is severe, Even when irradiated with light rays or ultraviolet rays, the components are less likely to deteriorate over time. As a result, the durability of the front roller, the rear roller, the intermediate roller, and the endless track chain can be improved.

In the manual carrier of the third aspect of the present invention, since the endless track chain is formed by sequentially connecting a plurality of one type of connecting pieces of the same shape and size, the parts of the endless track chain (only connecting pieces) (1 type) management becomes extremely easy. Further, the plurality of protrusions of the connecting piece are locked in the plurality of locking holes of the connecting piece adjacent to the connecting piece, and the plurality of protrusions of the adjacent connecting piece are further connected to the adjacent connecting piece. By repeating the operation of locking in the plurality of locking holes, the endless track chain can be formed, so that the endless track chain can be assembled by a very simple operation.

In the manual carrier of the fourth aspect of the present invention, the endless track chain is formed by sequentially connecting the belt pieces and the receiving plate and preventing the belt pieces from being separated from the receiving plate by the holding plate. Management of the parts of the endless track chain (three kinds of belt piece, backing plate and holding plate) becomes relatively easy. Further, the receiving plate is inserted in the state where the second insertion hole of the belt piece is inserted into the first protrusion of the receiving plate, and the first insertion hole of the belt piece adjacent to the belt piece is inserted into the second protrusion of the receiving plate. The first and second locking holes of the presser plate are respectively locked to the first and second protrusions of the first and second protrusions, and the second insertion holes of the adjacent belt pieces are inserted into the first protrusions of the receiving plate adjacent to the receiving plate. The presser plate is inserted into the first and second protrusions of the adjacent receiving plate in a state where the first insertion hole of the adjacent belt piece is further inserted into the second protrusion of the adjacent receiving plate. Since the endless track chain can be formed by repeating the operation of locking the first and second locking holes of the presser plates adjacent to each other, the endless track chain can be assembled by a relatively simple operation.

In a five aspect manual transport device of the present invention, since the connecting piece adjacent to the connecting piece and the connecting piece to form an endless track chain by connecting with connecting pins made of metal, in the endless track chain Even if a load in a direction perpendicular to the traveling direction is applied as well as a load in the traveling direction, the endless track chain has high rigidity, and the connection pieces are kept connected by metal connection pins. In this way, the endless track chain has a strength enough to withstand even a little severe use. Further, since the form an endless track chain by sequentially connected by the connecting pin one of the connecting pieces of a plurality of same shape and size, the management of parts of an endless track chain (2 kinds of the connecting pin and the connecting piece) It becomes relatively easy. In addition, a columnar portion of the connecting piece adjacent to the connecting piece is inserted between the pair of columnar protrusions of the connecting piece, and a metal connecting pin is loosely inserted into the pair of through holes and press-fitted into the through hole to connect. The connecting piece adjacent to the connecting piece is locked to the piece, and the columnar portion of the connecting piece further adjacent to the adjacent connecting piece is inserted between the pair of cylindrical protrusions of the adjacent connecting piece, and the connecting pin The other metal connecting pin is loosely inserted into the pair of through holes of the adjacent connecting piece and press-fitted into the through hole of the connecting piece further adjacent to the adjacent connecting piece. By repeating the operation of locking the connecting piece further adjacent to the connecting piece, the endless track chain can be formed. Therefore, the endless track chain can be assembled by a relatively simple operation. Furthermore, part of the cylindrical projections of the endless track chain is accommodated in the recess of the front roller and the rear roller and the intermediate roller, the convex portion of the endless track chain is partitioned by a partition wall of the front roller and the rear roller and the intermediate roller Since the front groove, the rear groove and the intermediate groove are inserted, the rotational force of the endless track chain is reliably transmitted to the front roller, the rear roller and the intermediate roller. As a result, the endless track chain can be prevented from rotating when the front roller, the rear roller and the intermediate roller do not rotate, that is, the endless track chain is slipping with respect to the front roller, the rear roller and the intermediate roller. It is possible to prevent the parts from rotating at the same time, so that early wear of parts can be prevented.

In the manual carrying device according to the sixth aspect of the present invention, the surface of the connecting piece belt portion opposite to the surface contacting the outer peripheral surface of the front roller, the rear roller and the intermediate roller is covered with a rectangular plate. Then, since the cover portion of the plate covers the end surfaces of the pair of cylindrical protrusions of the connecting piece, sand, dust, etc. enter the gap between the connecting pin of the connecting piece of the endless track chain and the through hole of the cylindrical protrusion. Can be suppressed.

  In the manual carrier of the seventh aspect of the present invention, the front roller, the rear roller, and the intermediate roller have outer front surfaces, a plurality of front windows, a rear window, Since each intermediate window is formed, mud, pebbles, etc. that have entered the front groove, rear groove, or intermediate groove pass through the front window, rear window, or intermediate window, and the front groove, rear groove, or intermediate groove. Discharged from. As a result, accumulation of mud or the like on the front groove, rear groove or intermediate groove can be prevented.

In the manual carrier of the eighth aspect of the present invention, when the attachment portion of the sled member is fitted to the front boss, the rear boss and the intermediate boss of the side piece of the running base, the sled member becomes the front portion of the endless track chain, Since the bottom of the sliding part is located between the lower horizontal part of the endless track chain and the intermediate shaft with the rear and both sides surrounded, the bottom of the endless track type traveling device is buried in snow or lawn. The bottom surface of the member is kept on the snow surface or the grass surface. As a result, the manual carrier can smoothly slide on the snow or on the lawn. Further, when the manual transporter travels on a hard road surface such as soil or asphalt, the sled member is kept floating from the road surface. As a result, the manual carrier can smoothly travel on a hard road surface such as soil or asphalt by the endless track chain.

In a ninth aspect of the manual carrier of the present invention, the stopper prevents the rotation of the other allowable vital endless track chain one rotation of the endless track chain, the manual transport device the advancing You can, but you can't go backwards. As a result, it is possible to prevent unintended reverse travel of the manual transporter.

In a 10 aspect of manual carrier of the present invention, since the crawler type traveling device about a horizontal pin swings back and forth relative to the loading platform, the crawler type traveling device while maintaining the loading platform horizontally undulating The undulations on the road surface can be absorbed by following the road surface. As a result, the luggage loaded on the loading platform can be transported in a stable state without falling over or falling from the loading platform.

In the manual carrier of the eleventh aspect of the present invention, since the horizontal turning mechanism is provided between the traveling base and the lower bracket, the handle member is rotated left or right with respect to the traveling direction of the endless track traveling device. By doing so, the direction of the loading platform can be changed. As a result, the manual carrier can be turned left or right relatively smoothly.

Since the 12 endless track type traveling apparatus aspect of the present invention is a crawler type traveling apparatus used in manual vehicles according to any aspect of the first to 11, the first to eleventh The same effect as the manual carrier described in any of the above aspects can be obtained.

It is the sectional view on the AA line of FIG. 6 which shows the endless track type traveling apparatus used for the handcart (manual-type carrier) of 1st Embodiment of this invention. It is the BB sectional view taken on the line of FIG. It is a perspective view which shows the state just before connecting the connecting pieces of the endless track chain. It is a longitudinal cross-sectional view which shows the procedure which connects the connection pieces of the endless track chain. It is CC sectional view taken on the line of FIG. It is a side view of the endless track type traveling device. It is a side view which respectively shows the state after replacing | exchanging the wheel of the handcart (manual-type conveyance tool) to an endless track type traveling apparatus, and after replacement | exchange. It is a side view which shows the state which the handcart (manual-type carrier) which replaced the wheel with the endless track type | formula traveling device is driving | running | working on the road with ups and downs, keeping a loading platform horizontal. It is a perspective view which shows the state just before connecting the belt pieces of the endless track chain of 2nd Embodiment of this invention with a receiving plate and a pressing plate. It is a longitudinal cross-sectional view which shows the procedure which connects the belt pieces of the endless track chain with a receiving plate and a pressing plate. It is a disassembled perspective view which shows the state just before connecting the belt parts of the endless track chain of 3rd Embodiment of this invention with a connection pin, and just before covering the belt part surface with a plate. It is a bottom view of the belt part and a plate. It is a longitudinal cross-sectional view which shows the procedure which coat | covers the belt part surface with a plate, after connecting the belt parts of the endless track chain with a connection pin. It is the DD sectional view taken on the line of FIG. It is the EE sectional view taken on the line of FIG. It is the FF sectional view taken on the line of FIG. It is a side view of the endless track type traveling device. It is a perspective view of the sled member attached to the endless track type traveling device of a 4th embodiment of the present invention. It is the GG sectional view taken on the line of FIG. It is the HH sectional view taken on the line of FIG. It is a side view showing the state just before attaching the sled member to an endless track type traveling device. It is a side view which shows the state which attached the sled member to the endless track type traveling device. It is a principal part longitudinal cross-sectional view of the endless track type | formula traveling apparatus for demonstrating the function of the stopper which controls the traveling direction of the endless track chain of 5th Embodiment of this invention. It is a side view which shows the state before and after replacing | exchanging the wheel of the rear car (manual-type carrier) of 6th Embodiment of this invention to an endless track type traveling apparatus, respectively. The manual carrier that replaces the three wheels (front one axis, rear one axis, single front wheel, and a pair of rear wheels) of the seventh embodiment of the present invention with three endless track type traveling devices suppresses the inclination of the loading platform. It is a side view which shows the state which is drive | working the road with ups and downs. It is a longitudinal cross-sectional view corresponding to FIG. 5 which shows the endless track type traveling apparatus provided with the horizontal turning mechanism of 8th Embodiment of this invention. Of the five wheels (front one axle, rear two axles, single front wheel and two pairs of rear wheels), the front wheels are replaced with a single endless track type traveling device having a horizontal turning mechanism and the two pairs of rear wheels are horizontal. It is a side view of the manual carrier which shows the state exchanged to a pair of endless track type traveling devices which do not have a turning mechanism. It is a top view of the manual carrier.

  Next, an embodiment for carrying out the present invention will be described with reference to the drawings.

<First Embodiment>
As shown in FIGS. 7 and 8, the manual carrier 10 is a hand cart called a cat carriage in this embodiment. The manual carrying device 10 includes a loading platform 11 for placing a parcel, the infinite track Shikihashi line 13 you travel by caterpillar chain 1 2 detachably attached to the lower portion of the bed 11, provided in the carrier 11 The handle member 14 is provided. The loading platform 11 is formed in a large bowl shape having an opening on the upper surface, and is configured to be able to load various packages such as packaged parcels for delivery, sand, earth, and gravel. In addition, two handle members 14 are provided in a protruding manner from the both sides of the upper rear surface of the loading platform 11 one by one to the rear, and a grip portion that can be gripped by the operator is provided at the rear end portions of the two handle members 14. 14a is provided.

On the other hand, the endless track traveling device 13 includes a traveling base 16 that is detachably attached to the lower part of the loading platform 11, a front roller 18 that is rotatably attached to the front of the traveling base 16 via a front shaft 17, and a traveling A rear roller 23 rotatably attached to a rear portion of the base portion 16 via a rear shaft 19, and an outer diameter formed smaller than the outer diameters of the front roller 18 and the rear roller 23. The first and second intermediate rollers 31 and 32 are rotatably mounted between the rear roller 23 via the first and second intermediate shafts 21 and 22, respectively, and the front roller 18 and the rear roller 23 are stretched. And the endless track chain 12 (FIGS. 1, 5 and 6).

The traveling base portion 16 is formed to extend in the longitudinal direction of the endless track chain 12, and its transverse cross-sectional shape is formed into a concealed channel shape (FIGS. 1, 2, and 6). The traveling base portion 16 includes an upper horizontal piece 16a provided horizontally extending in the longitudinal direction of the endless track chain 12, a pair of side pieces 16b and 16b respectively suspended from both sides of the upper horizontal piece 16a, A pair of front holes 16c and 16c (FIG. 1) formed in the front lower part of the side pieces 16b and 16b, respectively, and a pair of rear holes 16d (FIG. 6) formed in the rear lower part of the pair of side pieces 16b and 16b, respectively. ), A pair of first intermediate holes 16e, 16e (FIG. 2) formed in the lower part near the front center of the pair of side pieces 16b, 16b, and a lower part near the rear center of the pair of side pieces 16b, 16b, respectively. And a pair of second intermediate holes 16f (FIG. 6) formed respectively. Here, the front hole 16c and the rear hole 16d are formed at the same height, and the first intermediate hole 16e and the second intermediate hole 16f are the same as each other below the front hole 16c and the rear hole 16d by a predetermined distance. Each is formed to have a height. The predetermined distance is a value obtained by subtracting the radius of the first intermediate roller 31 or the second intermediate roller 32 from the radius of the front roller 18 or the rear roller 23. The front shaft 17 and the rear shaft 19 are rotatable in the pair of front holes 16c and 16c and the pair of rear holes 16d through a pair of front bearings 24 and 24 (FIG. 1) and a pair of rear bearings 26 (FIG. 6). The pair of first intermediate holes 16e and 16e and the pair of second intermediate holes 16f are respectively provided with a pair of first intermediate bearings 41 and 41 (FIG. 2) and a pair of second intermediate bearings 42 (FIG. 6). The first intermediate shaft 21 and the second intermediate shaft 22 are inserted in a rotatable manner. Furthermore, this running base 16 is preferably formed by injection molding of polypropylene containing long glass fibers. The front shaft 17, the rear shaft 19, the first intermediate shaft 21, and the second intermediate shaft 22 are formed of a round metal rod such as stainless steel, and the front bearing 24, the rear bearing 26, the first intermediate bearing 41, and the 2 The intermediate bearing 42 is preferably made of a polyacetal copolymer (copolymer) which is called Duracon (trade name of Polyplastics) and is a self-lubricating resin. As a result, the front shaft 17, the rear shaft 19, the first intermediate shaft 21, and the second intermediate shaft 22 apply lubricant to the front bearing 24, the rear bearing 26, the first intermediate bearing 41, and the second intermediate bearing 42. Relative rotation is possible smoothly.

  The front roller 18 includes a front boss portion 18a that can be fitted to the front shaft 17, a front rim portion 18c in which a relatively large cross-section V-shaped front recess 18b extending in the circumferential direction is formed on the outer peripheral surface, A plurality of front ribs 18d provided radially on the front boss 18a are provided on both side surfaces of the front rim 18c (FIGS. 1, 5, and 6). Here, a knurl 17 a (FIG. 1) is formed on the center outer peripheral surface of the front shaft 17, and the front roller 18 is fixed to the front shaft 17 by press-fitting the front boss portion 18 a of the front roller 18 into the front shaft 17. Is done. The rear roller 23 has a rear boss 23a that can be fitted to the rear shaft 19 and a rear recess 23b having a relatively large transverse V-shaped cross section extending in the circumferential direction on the outer peripheral surface. It has a rim portion 23c and a plurality of rear ribs 23d provided radially on both sides of the rear rim portion 23c around the rear boss portion 23a. Here, a knurl (not shown) is formed on the central outer peripheral surface of the rear shaft 19, and the rear roller 23 is pushed into the rear shaft 19 by press-fitting the rear boss portion 23 a into the rear shaft 19. 19 is fixed. The front roller 18 and the rear roller 23 are preferably formed in the same shape and the same size using a weather resistant plastic such as 66 nylon. As a result, even if the difference in temperature is intense, or even when exposed to sunlight or ultraviolet rays, the components are less likely to deteriorate over time, and the durability of the front roller 18 and the rear roller 23 can be improved and component management is easy. become. A plurality of front windows 18e and rear windows 23e communicating with the front and rear recesses 18b and 23b are formed on the outer surface of the front roller 18 and the outer surface of the rear roller 23, respectively. As a result, mud, pebbles and the like that have entered the front groove 18b and the rear groove 23b are discharged from the front groove 18b or the rear groove 23b through the front window 18e or the rear window 23e. Accumulation on the strip 18b or the rear concave strip 23b can be prevented.

  The first intermediate roller 31, a first intermediate boss portion 31 a that can be fitted to the first intermediate shaft 21, and a first intermediate recess 31 b having a relatively large cross-sectional V-shape extending in the circumferential direction are formed on the outer peripheral surface. The first intermediate rim portion 31c and a plurality of first intermediate ribs 31d provided radially on both sides of the first intermediate rim portion 31c around the first intermediate boss portion 31a (FIGS. 2 and 5) And FIG. 6). Here, a knurl 21 a (FIG. 2) is formed on the central outer peripheral surface of the first intermediate shaft 21, and the first intermediate boss portion 31 a of the first intermediate roller 31 is press-fitted into the first intermediate shaft 21, thereby The first intermediate roller 31 is fixed to the first intermediate shaft 21. The second intermediate roller 32 includes a second intermediate boss portion 32a that can be fitted to the second intermediate shaft 22, and a second intermediate recess 32b having a relatively large cross-sectional V-shape extending in the circumferential direction on the outer peripheral surface. Are formed, and a plurality of second intermediate ribs 32d provided radially on both sides of the second intermediate rim portion 32c around the second intermediate boss portion 32a. Here, a knurling (not shown) is formed on the central outer peripheral surface of the second intermediate shaft 21, and the second intermediate boss portion 32 a of the second intermediate roller 32 is press-fitted into the second intermediate shaft 22, thereby The two intermediate rollers 32 are fixed to the second intermediate shaft 22. The first intermediate roller 31 and the second intermediate roller 32 are preferably formed in the same shape and the same size using a weather resistant plastic such as 66 nylon. As a result, even if the difference between the temperature and the temperature is severe, or even when sunlight or ultraviolet rays are irradiated, the components are less likely to deteriorate over time, and the durability of the first intermediate roller 31 and the second intermediate roller 32 can be improved. Management becomes easy. Furthermore, the cross-sectional shapes of the front groove 18b, the rear groove 23b, the first intermediate groove 31b, and the second intermediate groove 32b are formed to be the same. A plurality of first intermediate windows 31e and second intermediate windows communicating with the first intermediate recess 31b and the second intermediate recess 32b are provided on the outer peripheral surface of the first intermediate roller 31 and the outer surface of the second intermediate roller 32. 32e is formed. Thus, mud, pebbles, etc. that have entered the first intermediate groove 31b or the second intermediate groove 32b pass through the first intermediate window 31e or the second intermediate window 32e, and thus the first intermediate groove 31b or the second intermediate groove 32b. Therefore, accumulation of mud or the like on the first intermediate groove 31b or the second intermediate groove 32b can be prevented.

The endless track chain 12 has a plurality of tapered protrusions that can be engaged with the front recess 18b, the rear recess 23b, the first intermediate recess 31b, and the second intermediate recess 32b with a space in the longitudinal direction on the inner peripheral surface. A portion 27 is formed (FIGS. 1 and 3 to 5). As shown in detail in FIGS. 1 and 4, each of these convex portions 27 is formed at intervals in the longitudinal direction of the endless track chain 12, and is formed with a front groove 18 b, a rear groove 23 b, and a first intermediate groove. A single plate piece 27a formed in a tapered plate shape corresponding to a relatively large cross-sectional V-shape of 31b and the second intermediate recess 32b, and a plate formed extending in the longitudinal direction of the endless track chain 12. In order to reinforce the piece 27a, it is composed of a single plate-like rib 27b that intersects with the plate piece 27a and is provided integrally with the plate piece 27a. Specifically, the endless track chain 12 is formed endlessly by sequentially connecting a plurality of one type of connecting pieces 28 of the same shape and size (FIGS. 5 and 6). Each of the connecting pieces 28 includes a belt portion 28a formed in a rectangular plate shape having flexibility, and a first plate formed integrally with one end of the belt portion 28a and formed in a rectangular plate shape thicker than the belt portion 28a. One thick plate portion 28b, a second thick plate portion 28c formed integrally with the other end of the belt portion 28a and formed in a rectangular plate shape thicker than the belt portion 28a, and one surface of the second thick plate portion 28c A pair of protruding projections 28d, 28d, a pair of locking holes 28e, 28e formed on the first thick plate portion 28b and capable of locking a pair of projections 28d, 28d of the adjacent connecting piece 28, and a second It consists of the convex part 27 protrudingly provided by the other surface of the thick board part 28c (FIG.3 and FIG.4). The belt portion 28a, respectively elongated hole 28f extending in the width direction of the endless track chain 12 in the width direction and the longitudinal direction of the endless track chain 12 is formed three rows and two columns. Further, the first thick plate portion 28b and the second thick plate portion 28c are formed to have substantially the same thickness, and the first thick plate portion 28b is provided with the same step as the thickness of the second thick plate portion 28c to provide the belt portion. The second thick plate portion 28c is integrally provided at the other end of the belt portion 28a so that the other surface thereof coincides with the other surface of the belt portion 28a. Further, the projection 28d formed on the second thick plate portion 28c has a large-diameter head portion 28g and a neck portion 28h provided at the tip of the head portion 28g and having a smaller diameter than the head portion 28g. The locking hole 28e formed in the portion 28b has a large-diameter portion 28i that is slightly larger in diameter than the head portion 28g of the protrusion 28d, and a smaller diameter than the head portion 28g of the protrusion 28d and slightly larger than the neck portion 28h of the protrusion 28d. And a small diameter portion 28j which is a diameter. Then, the plurality of protrusions 28d of the connecting piece 28 are locked in the plurality of locking holes 28e of the connecting piece 28 adjacent to the connecting piece 28, and the plurality of protrusions 28d of the adjacent connecting piece 28 are connected to the adjacent connecting piece 28. The endless track chain 12 is configured by repeating the locking structure of locking in the plurality of locking holes 28e of the connecting piece 28 further adjacent to the connecting piece 28. Each connecting piece 28 of the endless track chain 12 is preferably made of weather resistant plastic such as 66 nylon. As a result, even if the difference between the temperature and the temperature is severe, or even when sunlight or ultraviolet rays are irradiated, the components are less likely to deteriorate over time, and the durability of the endless track chain 12 can be improved.

On the other hand, a gate-shaped upper bracket 33 is attached to the lower part of the loading platform 11, specifically to the center of the lower surface of the loading platform 11 (FIGS. 2, 5, 7 and 8). The upper bracket 33 includes an upper mounting piece (not shown) attached to the lower surface of the loading platform 11, and a pair of upper vertical pieces 33a and 33a suspended from both sides of the upper mounting piece. A pair of inverted U-shaped notches 33b and 33b (FIGS. 2 and 5) are formed below the upper vertical pieces 33a and 33a, respectively. A lower bracket 34 is attached to the upper portion of the traveling base 16 and is formed with a traveling-side through hole 34c that faces the upper bracket 33 and can communicate with the notch 33b. The lower bracket 34 includes a lower mounting piece 34a attached to the upper surface of the traveling base 16 by screws 36 and nuts 37, and a pair of lower vertical pieces 34b and 34b projecting vertically upward from both sides of the lower mounting piece 34a. And have. A pair of travel side through holes 34c and 34c (FIG. 2) are formed on the upper portions of the lower vertical pieces 34b and 34b, respectively. Then, the lower bracket 34 is engaged with the upper bracket 33, and the horizontal pin 38 is inserted into the notch 33b and the travel side through hole 34c in a state where the notch 33b and the travel side through hole 34c are matched. The platform 11 is attached to the endless track traveling device 13. Specifically, male screws are respectively formed at both ends of the horizontal pin 38, and after the horizontal pin 38 is inserted into the pair of travel side through holes 34 c, the receiving nuts 39, 39 and the presser nut 43 are received by the male screws at both ends of the horizontal pin 38. , 43 are screwed together and the lower portions of the pair of upper vertical pieces 33a, 33a of the upper bracket 33 are clamped by the receiving nuts 39, 39 and the presser nuts 43, 43, so that the upper bracket 33 pivots to the lower bracket 34. Worn. As a result, the endless track traveling device 13 swings in the front-rear direction with respect to the loading platform 11 with the horizontal pin 38 as the center, and is configured to be able to travel on a undulating road while keeping the loading platform 11 horizontal.

  Note that two sets of first reinforcing tools 51, 51 for maintaining a constant distance between the pair of side pieces 16b, 16b are attached to the traveling base 16 at intervals in the longitudinal direction of the traveling base 16 (FIG. 2). 5 and 6). Each of these first reinforcing members 51, 51 is formed to have the same length as the inner width of the traveling base portion 16 and the first screw rod 51 a formed longer than the outer width of the traveling base portion 16 and having male threads at both ends. And a first pipe 51b into which the first screw rod 51a can be loosely inserted, and a pair of first nuts 51c, 51c that can be screwed to both ends of the first screw rod 51a. The first screw rod 51a is inserted into first reinforcing holes 16g and 16g formed in the pair of side pieces 16b and 16b of the traveling base 16 (FIG. 2). Further, the second bracket 52 is attached to the lower bracket 34 to keep the distance between the pair of lower vertical pieces 34b, 34b constant (FIGS. 1, 2, 5, and 6). The second reinforcing member 52 includes a second screw rod 52a formed longer than the outer width of the lower bracket 34 and having male threads formed at both ends, and a second screw rod formed to have the same length as the inner width of the lower bracket 34. It has the 2nd pipe 52b which can insert 52a loosely, and a pair of 2nd nut 52c, 52c which can be screwed together at the both ends of the 2nd screw rod 52a. The second screw rod 52a is inserted into second reinforcing holes 34d and 34d formed in the pair of lower vertical pieces 34b and 34b of the lower bracket 34.

An assembling procedure of the endless track traveling device 13 configured as described above will be described. The plurality of protrusions 28d of the connecting piece 28 are previously locked to the plurality of locking holes 28e of the connecting piece 28 adjacent to the connecting piece 28 using a mallet 47 (FIG. 4). An extremely simple operation of locking the plurality of protrusions 28d in the plurality of locking holes 28e of the connecting piece 28 further adjacent to the adjacent connecting piece 28 is repeated, so that the endless track chain 12 having a straight predetermined length is obtained. Prepare. In this way, the endless track chain 12 can be formed by sequentially connecting a plurality of one type of connecting pieces 28 of the same shape and the same size. Therefore, the management of the parts of the endless track chain 12 (only one type of connecting pieces) is extremely important. It becomes easy. Further, the second pipe 52b is inserted between the pair of vertical pieces 34b, 34b of the lower bracket 34 so that both ends of the second pipe 52b of the second reinforcing member 52 are desired in the pair of second reinforcing holes 34d, 34d, respectively. After the second screw rod 52b is inserted into the second reinforcing hole 34d and the second pipe 52b, a pair of second nuts 52c and 52c are screwed into the male screws at both ends of the second screw rod 52a. As a result, the pair of vertical pieces 34b, 34b of the lower bracket 34 can be prevented from separating from each other or approaching each other.

  First, the lower bracket 34 is attached to the upper center surface of the traveling base 16 with screws 36 and nuts 37. Next, after the front roller 18 is fitted to the front shaft 17, a pair of front bearings 24, 24 are inserted into both ends of the front shaft 17, and the front lower portions of the pair of side pieces 16 b, 16 b of the traveling base 16 are expanded. Thus, the front roller 18 is attached to the lower front portion of the traveling base 16 by inserting the pair of front bearings 24 and 24 into the pair of front holes 16c and 16c, respectively. Then, after the rear roller 23 is fitted to the rear shaft 19, a pair of rear bearings 26 are inserted into both ends of the rear shaft 19, and the rear lower portions of the pair of side pieces 16 b and 16 b of the traveling base 16 are expanded. Thus, the rear roller 23 is attached to the rear lower portion of the traveling base 16 by inserting the pair of rear bearings 26 into the pair of rear holes 16d. Next, after the first intermediate roller 31 is fitted to the first intermediate shaft 21, the pair of first intermediate bearings 41, 41 are inserted into both ends of the first intermediate shaft 21, and the pair of side pieces 16 b, 16 b of the traveling base portion 16 are inserted. The first intermediate roller 31 is moved to the front side of the traveling base 16 by inserting the pair of first intermediate bearings 41 and 41 into the pair of first intermediate holes 16e and 16e, respectively, in a state where the lower portion near the front center is expanded. Install at the bottom near the center. Then, after the second intermediate roller 32 is fitted to the second intermediate shaft 22, a pair of second intermediate bearings 42 are inserted into both ends of the second intermediate shaft 22, and the rear side pieces 16 b and 16 b of the traveling base 16 are rearward. The pair of second intermediate bearings 42 are respectively inserted into the pair of second intermediate holes 16f in a state in which the lower portion near the center of the side is pushed wide, thereby lowering the second intermediate roller 32 toward the rear center of the traveling base portion 16. Install to.

Next, the first pipe 51b is inserted between the pair of side pieces 16b, 16b of the traveling base 16 so that both ends of the first pipe 51b of the first reinforcing tool 51 are desired in the pair of first reinforcing holes 16g, 16g, respectively. Then, after the first screw rod 51a is inserted through the first reinforcing hole 16g and the first pipe 51b, the pair of first nuts 51c and 51c are screwed into the male screws at both ends of the first screw rod 51a. Thereby, it can prevent that a pair of side piece 16b, 16b of the driving | running | working base 16 leaves | separates mutually or approaches each other. Further, a plurality of convex portions 27 of the straight endless track chain 12 are formed by a front groove 18 b of the front roller 18, a rear groove 23 b of the rear roller 23, a first intermediate groove 31 b and a second intermediate groove 31 b of the first intermediate roller 31. The endless track chain 12 is wound around the front roller 18, the rear roller 23, the first intermediate roller 31 and the second intermediate roller 32 so as to engage with the second intermediate recess 32b of the intermediate roller 32, and the endless track chain 12 The projection 28d of the connecting piece 28 on one end side of the endless track chain 12 is locked in the locking hole 28e of the connecting piece 28 on the other end side of the endless track chain 12, thereby making the endless track chain 12 endless. Thereby, the assembly of the endless track type traveling device 13 is completed.

A procedure for exchanging the endless track traveling device 13 assembled in this way with the wheel 45 of the manual carrier 10 will be described with reference to FIG. First, the wheel 45 (FIG. 7A) of the manual transporter 10 is removed from the loading platform 11. Next, a horizontal pin 38 is inserted into the pair of traveling side through holes 34 c and 34 c of the lower bracket 34 of the endless track traveling device 13, and receiving nuts 39 and 39 are screwed to both ends of the horizontal pin 38. Next, a pair of notches 33b and 33b provided in a pair of upper vertical pieces 33a and 33a of the upper bracket 33 attached to the lower surface of the loading platform 11 are fitted into both ends of the horizontal pin 38, respectively. Further, presser nuts 43 and 43 are screwed to both ends of the horizontal pin 38, and the lower part of the left upper vertical piece 33a is received by the nut 39 and the presser nut 43, and the lower part of the right upper vertical piece 33a is received. It is clamped by the nut 39 and the presser nut 43. Thereby, the replacement of the wheel 45 with the endless track type traveling device 13 is completed (FIG. 7B).

As described above, in the manual transporter 10 in which the wheels 45 are replaced with the endless track traveling device 13, the gripper 14 a of the handle member 14 is gripped and the manual transporter 10 is pushed with the load placed on the loading platform 11. When traveling on a undulating road 46, the endless track traveling device 13 swings back and forth around the horizontal pin 38 with respect to the loading platform 11, so that the endless track traveling device 13 undulates while keeping the loading platform 11 horizontal. The undulations of the road surface 46a can be absorbed by following the road surface 46a with the road (FIG. 8). As a result, the load loaded on the loading platform 11 can be transported in a stable state without falling on the loading platform 11 or falling from the loading platform 11. Further, the front groove 18b of the front roller 18, the rear groove 23b of the rear roller 23, the first intermediate groove 31b of the first intermediate roller 31, and the second intermediate groove 32b of the second intermediate roller 32 are relatively large. Since it is formed in a V-shaped cross section, even if mud, grass, water or the like enters the concave strips 18b, 23b, 31b, 32b during the operation of the manual carrier 10, the front roller 18, the rear side The roller 23, the first intermediate roller 31 and the second intermediate roller 32 are quickly discharged by the rotation. As a result, the manual transporter 10 can smoothly travel even on a rough road that is not paved, a saddle road with weeds, a cold region where water freezes, or a road in a cold season. Further, sand, earth, etc. that have entered the front groove 18b, the rear groove 23b, the first intermediate groove 31b, and the second intermediate groove 32b are formed on the belt portion 28a of the connecting piece 28 of the endless track chain 12. It is also discharged from the plurality of long holes 28f.

Further, when the connecting piece 28 is made of plastic, if the convex portion is formed in a block shape on the other surface of the second thick plate portion 28c, that is, the inner peripheral surface of the endless track chain 12, one of the second thick plate portions 28c is formed. It is necessary to form a recess (not shown) for preventing sink marks on the outer surface of the endless track chain 12. In this case, there is a risk that mud, pebbles, etc. may enter the clogging recesses formed on the outer peripheral surface of the endless track chain 12 and become clogged. On the other hand, in the present embodiment, the convex portion 27 formed on the other surface of the second thick plate portion 28c is formed by crossing plate-like members, both the plate pieces 27a and the ribs 27b. In addition, it is not necessary to form a sink-preventing concave portion on one surface of the second thick plate portion 28c, that is, the outer peripheral surface of the endless track chain 12. As a result, mud, pebbles and the like do not enter the outer peripheral surface of the endless track chain 12, and mud, pebbles and the like are not clogged.

<Second Embodiment>
9 and 10 show a second embodiment of the present invention. 9 and 10, the same reference numerals as those in FIGS. 3 and 4 denote the same components. In this embodiment, the endless track chain 72 sequentially connects a plurality of belt pieces 73 formed in a rectangular plate shape having flexibility and a receiving plate 74 formed in a rectangular plate shape thicker than the belt piece 73. In addition, the plurality of presser plates 76 prevent the plurality of belt pieces 73 from being detached from the plurality of receiving plates 74, respectively, so that the endlessly formed portions are formed. Specifically, a pair of first insertion holes 73 a and 73 a are formed on one end side of the plurality of belt pieces 73, and a pair of second insertion holes 73 b and 73 b are formed on the other end side of the plurality of belt pieces 73, respectively. Is done. Standing portions 73 c and 73 d are respectively formed along one end and the other end of each belt piece 73, and the standing portion 73 c on one end side of the belt piece 73 is in contact with the standing portion 73 d on the other end side of the adjacent belt piece 73. These standing portions 73 c and 73 d are configured to be accommodated in a concave groove 76 a formed in the presser plate 76. As a result, the adjacent belt pieces 73 are held in contact with each other. A pair of first projections 74 a and 74 a into which the pair of second insertion holes 73 b and 73 b of the belt piece 73 can be fitted are provided on one end side of one surface of the receiving plate 74, respectively. A pair of second protrusions 74b and 74b that can fit the pair of first insertion holes 73a and 73a of the belt piece 73 adjacent to the belt piece 73 are respectively provided on the other end side of the surface. The first protrusion 74a has a first head 74c having a diameter slightly smaller than that of the second insertion hole 73b, and a first neck 74d provided at the tip of the first head 74c and having a diameter smaller than that of the first head 74c. The second protrusion 74b includes a second head 74e having a diameter slightly smaller than that of the first insertion hole 73a, and a second neck portion 74f provided at the tip of the second head 74e and having a diameter smaller than that of the second head 74e. . Furthermore, a first locking hole 76a that can be locked to the first protrusion 74a is formed on one end side of the presser plate 76, and a second locking hole that can be locked to the second protrusion 74b on the other end side of the presser plate 76. 76b is formed, and the convex portions 27 are provided on the other surfaces of the plurality of receiving plates 74, respectively. The first locking hole 76b has a first large-diameter portion 76d that is substantially the same diameter as the second insertion hole 73b and a smaller diameter than the first head portion 74c of the first protrusion 74a, and the first neck portion 74d of the first protrusion 74a. The first small-diameter portion 76e having a slightly larger diameter, the second locking hole 76c, the second large-diameter portion 76f having substantially the same diameter as the first insertion hole 73a, and the second projection 74b second. A second small diameter portion 76g having a smaller diameter than the head 74e and slightly larger than the second neck portion 74f of the second protrusion 74b. In addition, since the endless track chain 72 is composed of a belt piece 73, a receiving plate 74, and a holding plate 76 (three types) and relatively few types of parts, the management of the parts of the endless track chain 72 is relatively easy. . The configuration other than the above is the same as that of the first embodiment.

A procedure for assembling the endless track chain 72 configured as described above will be described. First, a pair of second insertion holes 73b and 73b of the belt piece 73 are fitted into the pair of first protrusions 74a and 74a of the receiving plate 74, and the belt piece 73 is inserted into the pair of second protrusions 74b and 74b of the receiving plate 74. In the state where the pair of first insertion holes 73a and 73a of the belt piece 73 adjacent to the first and second protrusions 74a and 74b of the receiving plate 74 are fitted, the first and second of the presser plate 76 using the mallet 47. The second locking holes 76a and 76b are locked (FIG. 10). Next, the second fitting hole 73b of the adjacent belt piece 73 is fitted into the first protrusion 74a of the receiving plate 74 adjacent to the receiving plate 74, and the second protrusion 74b of the adjacent receiving plate 74 is adjacent to the second protrusion 74b. In a state in which the first insertion hole 73a of the belt piece 73 further adjacent to the belt piece 73 is fitted, the first and second protrusions 74a and 74b of the adjacent receiving plate 74 have the pressing plate 76 adjacent to the pressing plate 76. The first and second locking holes 76a and 76b are locked. By repeating such relatively simple work, the endless track chain 72 can be formed. Since the assembly procedure of the endless track traveling device other than the above is substantially the same as the assembly procedure of the first embodiment, repeated description is omitted. In addition, the procedure for exchanging the endless track traveling device with the wheel of the hand truck is substantially the same as the exchanging procedure of the first embodiment, and thus the repeated explanation is omitted. Furthermore, since the operation of the manual carrier exchanged with the endless track traveling device is substantially the same as the operation of the first embodiment, repeated description will be omitted.

<Third Embodiment>
11 to 17 show a third embodiment of the present invention. 14 to 17, the same reference numerals as those in FIGS. 1, 2, 5, and 6 denote the same components. In this embodiment, the endless track chain 92 is formed endlessly by sequentially connecting a plurality of connecting pieces 98 of the same shape and the same size with metal connecting pins 99. Each of the plurality of connecting pieces 98 includes a belt portion 98a formed in a rectangular plate shape, and parallel to each other in a direction away from the belt portion 98a at both ends of the belt portion 98a in the width direction of one end surface of the belt portion 98a. A pair of cylindrical protrusions 98b and 98b, and a columnar portion 98c protruding in the direction away from the belt portion 98a at the center in the width direction of the belt portion 98a of the other end surface of the belt portion 98a. (FIGS. 11 to 13). A pair of through-holes 98d and 98d into which a metal connecting pin 99 can be loosely inserted are formed in the pair of columnar protrusions 98b and 98b, respectively. Further, in the columnar portion 98c, the hole core coincides with the pair of through holes 98d and 98d while being inserted between the pair of columnar protrusions 98b and 98b of the adjacent connecting piece 98, and the connecting pin 99 can be press-fitted. A transparent hole 98e is formed. That is, the inner diameter of the pair of through holes 98d and 98d is slightly larger than the diameter of the connecting pin 99, and the inner diameter of the through hole 98e is slightly smaller than the diameter of the connecting pin 99. As shown in FIG. 13, the connecting pin 99 is connected to the connecting piece 98 in a state where the columnar portion 98 c of the connecting piece 98 adjacent to the connecting piece 98 is inserted between the pair of columnar protrusions 98 b and 98 b of the connecting piece 98. The connection piece 98 adjacent to the connection piece 98 is engaged with the connection piece 98 by loosely inserting into the pair of through holes 98d and 98d and press-fitting into the through hole 98e of the connection piece 98 adjacent to the connection piece 98. A connecting pin different from the connecting pin 99 in a state where the columnar portion 98c of the connecting piece 98 further adjacent to the adjacent connecting piece 98 is inserted between the pair of columnar protrusions 98b, 98b of the adjacent connecting piece 98. 99 is loosely inserted into the pair of through holes 98d, 98d of the adjacent connecting piece 98 and is press-fitted into the through hole 98e of the connecting piece 98 further adjacent to the adjacent connecting piece 98 to thereby insert the adjacent connecting piece 98 into the adjacent connecting piece 98. next to Endless track chain by repeating locking structure that locks the connecting piece 98 further adjacent to the connecting piece 98 which is formed. The belt portion 98a, the columnar protrusion 98b, and the columnar portion 98c are integrally formed by injection molding of plastic having weather resistance such as 66 nylon.

  Of the belt portion 98a of the connecting piece 98, the surface opposite to the surface contacting the outer peripheral surface of the front roller 108, the rear roller 103, the first intermediate roller 101 and the second intermediate roller 102 is formed by a rectangular plate 104. It is covered (FIGS. 11 and 13). The plate 104 is provided with a pair of cover portions 104a and 104a integrally covering the end surfaces of the pair of columnar protrusions 98b and 98b of the connecting piece 98 (FIGS. 11 to 13). In this embodiment, these cover portions 104a are provided so as to be positioned on diagonal lines of the rectangular plate 104, respectively. One cover portion 104a of the pair of cover portions 104a and 104a covers the end face of one columnar projection 98b of the pair of columnar projections 98b and 98b of the connecting piece 98 covered by the plate 104, and the other The cover portion 104 a is configured to cover the end surface of one columnar protrusion 98 b of the pair of columnar protrusions 98 b and 98 b adjacent to the connection piece 98 covered by the plate 104. Further, a plurality of protrusions 104 b are formed on the surface of the plate 104 facing the connecting piece 98, and a plurality of locking holes 98 f are formed on the surface of the connecting piece 98 facing the plate 104. The protrusion 104b formed on the plate 104 has a large-diameter head portion 104c and a neck portion 104d provided at the tip of the head portion 104c and having a smaller diameter than the head portion 104c. 98f has a large-diameter portion 98g that is slightly larger in diameter than the head 104c of the protrusion 104b, and a small-diameter portion 98h that is smaller in diameter than the head 104c of the protrusion 104b and slightly larger in diameter than the neck 104d of the protrusion 104b. . Then, the plate 104 is fixed to the connection piece 98 by engaging the plurality of protrusions 104 b of the plate 104 with the plurality of engagement holes 98 f of the connection piece 98. The cover portion 104a is integrally formed with the plate 104 by injection molding of weather resistant plastic such as 66 nylon.

On the other hand, as shown in FIGS. 14 to 17, the front roller 108 has a front boss portion 108a, a front recess 108b, a front rim portion 108c, and a front rib 108d, as in the first embodiment. As in the first embodiment, the side roller 103 includes a rear boss portion 103a, a rear recess 103b, a rear rim portion 103c, and a rear rib 103d. Similarly to the first embodiment, the first intermediate roller 101 includes a first intermediate boss 101a, a first intermediate groove 101b, a first intermediate rim 101c, and a first intermediate rib 101d. As in the first embodiment, the second intermediate roller 102 includes a second intermediate boss portion 102a, a second intermediate concave strip 102b, a second intermediate rim portion 102c, and a second intermediate rib 102d. In addition, a plurality of recesses that can accommodate a part of the pair of columnar protrusions 98b and 98b of the connecting piece 98 are provided on the outer peripheral surfaces of the front roller 108, the rear roller 103, the first intermediate roller 101, and the second intermediate roller 102. 108e, 103e, 101e, and 102e are formed at equal intervals in the circumferential direction. Further, the front groove 108b, the rear groove 103b, the first intermediate groove 101b, and the second intermediate groove 102b include a plurality of partition walls 108f, 103f that partition the inside of the grooves 108b, 103b, 101b, 102b. 101f and 102f are formed, respectively. The plurality of partition walls 108f partitioning the inside of the front groove 108b are formed radially at equal intervals in the circumferential direction of the front roller 108 so that the tips thereof face the plurality of recesses 108e of the front roller 108, respectively. The partition walls 103 f that partition the interior are formed radially so that the front end faces the plurality of recesses 103 e of the rear roller 103 at equal intervals in the circumferential direction of the rear roller 103. The partition walls 101f partitioning the inside of the first intermediate recess 101b are formed radially at equal intervals in the circumferential direction of the first intermediate roller 101 so that the tips thereof face the plurality of recesses 101e of the first intermediate roller 101, The partition walls 102f partitioning the inside of the second intermediate recess 102 are formed radially so that the front ends thereof face the plurality of recesses 102e of the second intermediate roller 102 at equal intervals in the circumferential direction of the second intermediate roller 102. . Further, on the outer surfaces of the front roller 108, the rear roller 103, the first intermediate roller 101, and the second intermediate roller 102, as in the first embodiment, a front groove 108b, a rear groove 103b, a first groove A plurality of front windows 108g, rear windows 103g, first intermediate windows 101g, and second intermediate windows 102g communicating with the intermediate grooves 101b and the second intermediate grooves 102b are respectively formed. In addition, since the endless track chain 92 is composed of the connecting piece 98, the connecting pin 99, and the plate 104 (three types) and relatively few types of parts, the management of the parts of the endless track chain 92 is relatively easy. The configuration other than the above is the same as that of the first embodiment.

An assembly procedure of the endless track chain 92 configured as described above will be described with reference to FIGS. First, the columnar portion 98c of the connecting piece 98 adjacent to the connecting piece 98 is inserted between the pair of cylindrical protrusions 98b, 98b of the connecting piece 98, and the pair of through holes of the pair of cylindrical protrusions 98b, 98b are inserted. The connecting pin 99 is loosely inserted into the pair of through holes 98d, 98d of the connecting piece 98 and adjacent to the connecting piece 98 in a state where the cores of the through holes 98e of the columnar portion 98c are aligned with the hole centers of 98d, 98d. The connection piece 98 adjacent to the connection piece 98 is locked to the connection piece 98 by press-fitting into the through hole 98e of the connection piece 98 (FIG. 13B). Next, a columnar portion 98c of the connecting piece 98 further adjacent to the adjacent connecting piece 98 is inserted between the pair of cylindrical protrusions 98b, 98b of the adjacent connecting piece 98, and the pair of cylindrical protrusions 98b. 98b, the connecting pin 99 other than the connecting pin 99 is connected to the adjacent connecting piece 98 in a state in which the core of the through hole 98e of the columnar portion 98c is aligned with the core of the pair of through holes 98d, 98d. Are inserted into the pair of through holes 98d and 98d and press-fitted into the through holes 98e of the connecting piece 98 further adjacent to the adjacent connecting piece 98, whereby the adjacent connecting piece 98 is further inserted into the adjacent connecting piece 98. The adjacent connecting piece 98 is locked. The above operation is repeated until a predetermined length is reached, and a straight endless track chain 92 is produced. Of the connecting pieces 98 constituting the straight endless track chain 92, the protrusions of the plate 104 are inserted into the locking holes 98f of the belt portions 98a of the connecting pieces 98 excluding the connecting pieces 98 positioned at both ends of the endless track chain 92. The plate 104 is fixed to each connecting piece 98 by locking 104b. As a result, the surface on the opposite side of the belt portion 98a of each connecting piece 98 from the front roller 108, the rear roller 103, the first intermediate roller 101, and the second intermediate roller 102 is contacted by the plate 104. It is covered (FIG. 13 (d)). Furthermore, by connecting the connecting pieces 98 and 98 positioned at both ends of the straight endless track chain 92 with the connecting pins 99, the endless track chain becomes an endless ring shape. Then, the plates 104 are fixed to the connecting pieces 98 and 98 located at both ends of the straight endless track chain 92, respectively. Thus, an endless track chain can be formed by a relatively simple operation. Further, since the cover portion 104a of the plate 104 covers the end surfaces of the pair of columnar protrusions 98b and 98b of the connection piece 98, the connection pins 99 of the connection piece 98 of the endless track chain 92 and the through holes of the columnar protrusions 98b and 98b. It is possible to suppress sand, dust and the like from entering the gap between 98d and 98d. Since the assembly procedure of the endless track traveling device other than the above is substantially the same as the assembly procedure of the first embodiment, repeated description is omitted. In addition, the procedure for exchanging the endless track traveling device with the wheel of the hand truck is substantially the same as the exchanging procedure of the first embodiment, and thus the repeated explanation is omitted.

The operation of the hand cart (manual carrier) 90 configured as described above will be described. Since the endless track chain 92 is formed by connecting the connecting piece 98 and the connecting piece 98 adjacent to the connecting piece 98 with a metal connecting pin 99, the endless track chain 92 has not only a load in its traveling direction. Even when a load in a direction orthogonal to the traveling direction is applied, the endless track chain 92 has high rigidity, and the connection pieces 98 are kept connected by the metal connection pins 99. As a result, the endless track chain 92 is strong enough to withstand a little severe use. Further, a part of the cylindrical protrusion 98b of the endless track chain 92 is accommodated in the recesses 108e, 103e, 101e, 102e of the front roller 108, the rear roller 103, the first intermediate roller 101 and the second intermediate roller 102, and the endless track. The front groove 108b and the rear groove 103b in which the convex portion 27 of the chain 92 is partitioned by the partition walls 108f, 103f, 101f, and 102f of the front roller 108, the rear roller 103, the first intermediate roller 101, and the second intermediate roller 102. , The rotational force of the endless track chain 92 is reliably applied to the front roller 108, the rear roller 103, the first intermediate roller 101, and the second intermediate roller 102. Is transmitted to. As a result, the front roller 108, the rear roller 103, since the endless track chain 92 with the first intermediate roller 101 and the second intermediate roller 102 is not rotated can be avoided from rotating, i.e. endless track chain 92 is front roller 108 Since it is possible to avoid rotating while sliding with respect to the rear roller 103, the first intermediate roller 101 and the second intermediate roller 102, it is possible to prevent early wear of parts. Since the operation other than the above is substantially the same as the operation of the first embodiment, repeated description will be omitted.

<Fourth embodiment>
18 to 22 show a fourth embodiment of the present invention. 19 to 22, the same reference numerals as those in FIGS. 14 and 17 denote the same components. In this embodiment, a sled member 111 that can slide on snow or grass is further provided. The sled member 111 includes a sliding portion 111a having a front portion and a rear portion curved upward and a flat center portion, an endless track chain insertion hole 111b formed in the center of the sliding portion 111a, and a sliding portion 111a. And a plurality of attachment portions 111c protruding from the periphery of the endless track chain insertion hole 111b. The sliding portion 111a is configured to be able to slide on snow or lawn by forming a flat center in the longitudinal direction. The endless track chain loose insertion hole 111b is formed to extend in the longitudinal direction of the endless track chain 12 spanned by the front roller 18 and the rear roller 23, and is formed so that the endless track chain 12 can be freely inserted. . A rectangular frame portion 111d protruding upward is formed on the periphery of the endless track chain loose insertion hole 111b.

On the other hand, the traveling base 116 is similar to the first and third embodiments in that the upper horizontal piece 116a, the pair of side pieces 116b and 116b, the pair of front holes 116c and 116c, the pair of rear holes 116d and 116d, First intermediate holes 116e, 116e, a pair of second intermediate holes 116f, 116f, a pair of first reinforcing holes 116g, 116g, and a pair of second reinforcing holes (not shown). Around the front hole, the rear hole, the first intermediate hole, and the second intermediate hole, the front boss, the rear boss, the first intermediate boss, and the second intermediate boss are integrated with the traveling base toward the outside of the pair of side pieces. Provided. A front flange, a rear flange, a first intermediate flange, and a second intermediate flange are provided integrally with the traveling base at the front ends of the front boss, the rear boss, the first intermediate boss, and the second intermediate boss, respectively. The plurality of attachment portions are respectively formed in upward concave shapes fitted to the 111c, the pair of front bosses 116h, the pair of rear bosses 116i, the pair of first intermediate bosses 116j, and the pair of second intermediate bosses 116k. . These mounting portions 111c are provided so as to protrude upward from the upper surface of the rectangular frame portion 111d. Further, the bottom surface of the sliding portion 111a is the lower horizontal portion of the endless track chain 92 with the plurality of mounting portions 111c fitted to the front boss 116h, the rear boss 116i, the first intermediate boss 116j, and the second intermediate boss 116k, respectively. And the first and second intermediate shafts 21 and 22. In addition, the code | symbol 111e, 111e in FIGS. 18-20 is a pair of side wall part which stood up along the both-sides edge of the sliding part 111a. The warp member 111 is preferably formed of a weather resistant plastic such as 66 nylon. Accordingly, even if the difference between the temperature and the temperature is severe, or even when sunlight or ultraviolet rays are irradiated, the components are less likely to deteriorate over time, and the durability of the sled member 111 can be improved. Other than the above, the configuration is the same as that of the first embodiment.

The assembly procedure of the endless track traveling device 113 of the hand cart (manual transporter) 110 configured in this way is as follows. The sled member 111 is attached to the endless track chain 92 spanned between the front roller 108 and the rear roller 103. Other than loosely fitting the endless track chain insertion hole 111b and fitting the plurality of attachment portions 111c of the sled member 111 to the front boss 116h, the rear boss 116i, the first intermediate boss 116j, and the second intermediate boss 116k, respectively. Since it is the same as that of the third embodiment, repeated description is omitted. Further, the procedure for exchanging the endless track traveling device 113 with the wheel of the hand cart 110 is substantially the same as the exchanging procedure of the first embodiment, and thus the repeated explanation is omitted. Further, in the operation of the hand cart 110 in which the wheels are replaced with the endless track traveling device 113, the bottom surface of the sliding portion 111a with the warp member 111 surrounding the front, rear and both sides of the endless track chain 92. Is located between the lower horizontal portion of the endless track chain 92 and the first and second intermediate shafts 21 and 22, the bottom of the endless track type traveling device 113 is buried in snow or grass, but the bottom surface of the sled member 111 Is kept on the snow surface or grass surface. As a result, the hand cart 110 can smoothly slide on snow or lawn. Further, when the manual transporter 110 travels on a hard road surface such as soil or asphalt, the sled member 111 is kept floating from the road surface. As a result, the manual carrier 110 can smoothly travel on a hard road surface such as soil or asphalt by the endless track chain 92. Since the operation other than the above is substantially the same as the operation of the third embodiment, repeated description is omitted.

<Fifth embodiment>
FIG. 23 shows a fifth embodiment of the present invention. 23, the same reference numerals as those in FIG. 5 denote the same components. In this embodiment, there is provided a stopper 141 whose base end is attached to the traveling base portion 16 and whose front end is in contact with the endless track chain 12. Specifically, the stopper 141 has a stopper support portion 141a which is mounted to the rear end upper surface of the upper horizontal plate 16a of the travel base 16, the endless track chain 12 is provided integrally with a rear end of the stopper holding portion 141a And a stopper main body 141b projecting obliquely downward and forward. The stopper 141 is preferably formed of a weather resistant plastic such as 66 nylon. As a result, even if the difference between the temperature and the temperature is intense, or even when sunlight or ultraviolet rays are irradiated, the components are less likely to deteriorate over time, and the durability of the stopper 141 can be improved. Further, endless track chain 12 as it rotates in one indicated by the solid line arrow in FIG. 23 (a) and (b), the stopper body 141b is in contact with the endless track chain 12 is elastically deformed, the endless track chain 12 When rotation to one side is allowed and the endless track chain 12 rotates to the other indicated by the broken line arrow in FIG. 23 (c), the tip of the stopper body 141b comes into contact with the stepped portion on the outer peripheral surface of the endless track chain 12. The rotation of the endless track chain 12 to the other side is prevented. The configuration other than the above is the same as that of the first embodiment.

In the thus configured cart (manual vehicles), so preventing the rotation of the other permit rotation of the one stopper 141 is endless track chain 12 vital endless track chain 12, manual transportation The tool can move forward but cannot move backwards. As a result, it is possible to prevent unintended reverse travel of the manual transporter. Since the operation other than the above is substantially the same as the operation of the first embodiment, repeated description will be omitted.

<Sixth Embodiment>
FIG. 24 shows a sixth embodiment of the present invention. 24, the same reference numerals as those in FIG. 7 denote the same parts. In this embodiment, the manual carrier 160 is a rear car, and an upper bracket 163 in which a loading platform side through hole (not shown) is formed is attached to the lower portion of the loading platform 161. Further, with the lower bracket 34 engaged with the upper bracket 163 and the loading platform side through hole and the traveling side through hole (not shown) being matched, the horizontal pin 38 is attached to the loading platform side through hole and the traveling side through hole. The loading platform 161 is attached to the endless track traveling device 13 by being inserted. In addition, since the manual transporter 160 has a pair of wheels 165, these wheels 165 are replaced with a pair of endless track traveling devices 13, respectively. Further, reference numeral 164 in FIG. 24 denotes a handle member held by the operator. The configuration other than the above is the same as that of the first embodiment.

A procedure for exchanging the wheel 165 of the rear car 160 configured as described above with the endless track traveling device 13 will be described with reference to FIG. First, the wheel 165 (FIG. 24A) of the rear car 160 is removed from the cargo bed 161. Next, a horizontal pin 38 is inserted into the pair of traveling side through holes of the lower bracket 34 of the endless track traveling device 13, and receiving nuts (not shown) are screwed to both ends of the horizontal pin 38. Next, a pair of cargo bed side through holes (not shown) provided in the pair of upper vertical pieces 163 a of the upper bracket 163 attached to the lower part of the cargo bed 161 are respectively fitted into both ends of the horizontal pin 38. Further, a presser nut 43 is screwed to both ends of the horizontal pin 38, the lower part of the left upper vertical piece is clamped by the nut and presser nut 43, and the lower part of the right upper vertical piece is received and received by the nut and presser nut 43. Hold by. The above operation is performed on the pair of wheels 165, that is, the pair of wheels 165 is replaced with the pair of endless track traveling devices 13, respectively. Thereby, the replacement of the wheels 165 with the endless track type traveling device 13 is completed (FIG. 24B). Thus, the endless track type traveling device 13 can be applied to the rear car 160 as well. Since the operation other than the above is substantially the same as the operation of the first embodiment, repeated description will be omitted.

<Seventh embodiment>
FIG. 25 shows a seventh embodiment of the present invention. 25, the same reference numerals as those in FIG. 7 denote the same parts. In this embodiment, the manual carrier 180 has three wheels (not shown), and these wheels are replaced with the three endless track type traveling devices 13 respectively. The manual carrier 180 has a front single shaft and a single rear shaft, and a single front wheel (not shown) is rotatably attached to the front single shaft via a single first upper bracket 191. A pair of rear wheels (not shown) are rotatably attached via a pair of second upper brackets 192. The single first upper bracket 191 is attached to the center of the front lower surface of the cargo bed 181, and the pair of second upper brackets 192 are respectively attached to both sides of the rear lower surface of the cargo bed 181. A single front wheel is replaced with a single endless track traveling device 13, and a pair of rear wheels are replaced with a pair of endless track traveling devices 13, respectively. Specifically, the lower bracket 34 of the single endless track traveling device 13 is attached to the single first upper bracket 191 via the horizontal pin 38, and the pair of second upper brackets 192 is paired with the endless track type. The lower bracket 34 of the traveling device 13 is attached via a horizontal pin 38. In FIG. 25, reference numeral 191a is a first upper vertical piece of the first upper bracket 191, and reference numeral 192a is a second upper vertical piece of the second upper bracket 192. The configuration other than the above is the same as that of the first embodiment.

  With the manual carrier 180 configured as described above, it is possible to travel on the undulating road 46 relatively smoothly while suppressing the inclination of the loading platform 181. Since the operation other than the above is substantially the same as the operation of the first embodiment, repeated description will be omitted.

<Eighth Embodiment>
26 to 28 show an eighth embodiment of the present invention. 26 and 27, the same reference numerals as those in FIGS. 5 and 7 denote the same components. In this embodiment, a hand cart (manual carrier) 210 has five wheels (not shown), and these wheels are a single first endless track type traveling device 211 and a pair of second infinite. They are replaced with track- type traveling devices 212 and 212, respectively. This manual carrier 210 has a front single shaft and a rear two shaft. A single front wheel (not shown) is rotatably attached to the front single shaft via a single first upper bracket 221. Two pairs of rear wheels (not shown) are rotatably attached to the shaft via two pairs of second upper brackets 222 and 222, respectively. A single front wheel is replaced with a single first endless track traveling device 211, and two pairs of rear wheels are replaced with a pair of second endless track traveling devices 212 (FIGS. 27 and 28). . In the first first endless track type traveling device 211 attached to the center of the front lower surface of the loading platform 231 in place of the front wheel, a horizontal turning mechanism 245 described later is provided between the traveling base 236 and the lower bracket 34. A turning support plate 246 of the horizontal turning mechanism 245 is attached to the upper surface of the front portion of the traveling base 236 (FIG. 26).

In addition, the pair of second endless track type traveling devices 212 attached to both sides of the bottom rear surface of the loading platform in place of the two pairs of rear wheels has a traveling base 236 formed longer than the traveling base of the first embodiment. Two lower brackets 34 and 34 are attached to the upper surface of the base 236 with a space in the front-rear direction, and four first to fourth intermediate rollers 241 to 244 are attached between the front roller 18 and the rear roller 23 (see FIG. 27). Further, the length of the endless track chain 232 spanned between the front roller 18, the rear roller 23, and the first to fourth intermediate rollers 241 to 244 is formed longer than that of the endless track chain of the first embodiment. Then, the lower bracket 34 of the single first endless track traveling device 211 is attached to the single first upper bracket 221 via the horizontal pin 38, and the second upper brackets 222, 222 on the left side are secondly connected. The two lower brackets 34, 34 of the endless track type traveling device 212 are attached via two horizontal pins 38, 38, and the second endless track type traveling device is attached to the two right upper brackets (not shown). The two lower brackets (not shown) are attached via two horizontal pins (not shown). In FIG. 27, reference numeral 221a is a first upper vertical piece of the first upper bracket 221, and reference numeral 222a is a second upper vertical piece of the second upper bracket 222.

  On the other hand, the horizontal turning mechanism 245 includes a turning support plate 246 attached to the upper surface of the traveling base 236, and a vertical shaft 247 inserted through the turning support plate 246 and the lower bracket 34 (FIG. 26). The swivel support plate 246 is provided with a plurality of support protrusions 246a formed at equal intervals around the vertical shaft 247 so as to slidably receive the lower surface of the lower bracket 34. A first recess 246 b that can accommodate the washer 248 is formed in the center of the 246. Further, the vertical shaft 247 is configured by a stepped bolt including a head portion 247a, a shaft portion 247b, and a male screw portion 247c, and the washer 248 is formed with a second recess 248a capable of accommodating the head portion 247a of the vertical shaft 247. The Further, the washer 248 is fitted into the shaft portion 247 b of the vertical shaft 247, and the vertical shaft 247 is turned to the swivel support plate 246 and the lower bracket 34 in a state where the head 247 a of the vertical shaft 247 is accommodated in the second recess 248 a of the washer 248. The washer 248 is accommodated in the first recess 246b. The vertical shaft 247 is configured to rotatably hold the lower bracket 34 by screwing a fixing nut 249 into the male screw portion 247c of the vertical shaft 247. In this state, the turning support plate 246 is attached to the upper surface of the front portion of the traveling base 236 by screws 251 and nuts 252. Here, the reason why the turning support plate 246 is attached not to the longitudinal center of the traveling base 236 but to the front portion of the traveling base 236 is to facilitate turning of the hand cart 210. In this embodiment, two sets of the second reinforcing members 52 of the lower bracket 34 are provided. The configuration other than the above is the same as that of the first embodiment.

In the hand cart (manual carrier) 210 configured as described above, the horizontal turning mechanism 245 is provided between the traveling base 236 of the first endless track traveling device 211 and the lower bracket 34. The direction of the loading platform 231 can be changed by rotating the handle member 234 to the left or right with respect to the traveling direction of the second endless track traveling devices 211 and 212. Here, since the turning support plate 186 of the horizontal turning mechanism 245 is attached not to the longitudinal center of the traveling base 236 but to the front portion of the traveling base 236, the first and the second in the state where the hand cart 210 is moved straight. When the handle member 234 is pushed diagonally right or diagonally left with respect to the traveling direction of the endless track type traveling devices 211 and 212, the first endless track type traveling device 211 immediately starts to turn left or right, and the loading platform 231. When the handle member 234 is pushed forward of the loading platform 231 after the vehicle has turned by a desired angle, the first endless track traveling device 211 is directed in the same direction as the loading platform 231 and the hand cart 210 can be moved straight in that direction. . As a result, the hand cart 210 can be turned left or right relatively smoothly (FIG. 28). Since the operation other than the above is substantially the same as the operation of the first embodiment, repeated description will be omitted.

In the first to fifth embodiments, a hand cart (so-called cat car) is used as the manual transport device, and in the sixth embodiment, a rear car is used as the manual transport device. In this embodiment, a manual transporting device in which the three wheels of the front single shaft, the rear single shaft, the single front wheel, and the pair of rear wheel manual transporting devices are replaced with three endless track traveling devices as the manual transporting device. In the eighth embodiment, the five wheels of the manual carrier having the front single shaft, the rear two shafts, the single front wheel and the two pairs of rear wheels as the manual carrier are changed to three endless track type traveling devices. Although the replaced manual carrier was mentioned, this invention is applicable also to manual carriers, such as a wheelbarrow for elderly people (what is called a silver car). In the first to fifth and eighth embodiments, each of the plurality of convex portions of the endless track chain is tapered corresponding to the V-shaped cross section of the front concave groove, the rear concave groove, and the intermediate concave groove. a single plate piece which is formed in a plate shape, an example consisting of the plate piece and intersect and plate pieces and a single rib provided integrally, elongated endless track chain plate piece A plurality of ribs may be provided in parallel with each other with a small interval in the direction, and a plurality of ribs may be provided in parallel with each other and with a small interval in the width direction of the plate pieces.

  In the fourth embodiment, the front part and the rear part of the sliding part of the sled member are curved upward, but only the front part of the sled member may be curved upward. Further, in the eighth embodiment, the swivel support plate is provided with a plurality of support protrusions formed at equal intervals around the vertical axis so as to slidably receive the lower surface of the lower bracket. However, the swivel support plate may be provided with a single support protrusion formed in a circular shape around the vertical axis so as to slidably receive the lower surface of the lower bracket.

10, 90, 110, 180 Handcart (manual carrier)
11, 161, 181, 231 Loading platform 12, 72, 92, 232 Endless track chain 13, 93, 211, 212 Endless track type traveling device 14, 164, 234 Handle member 16, 116, 236 Traveling base 17 Front shaft 18, 108 Front roller 18b, 108b Front groove 18e Front window 19 Rear shaft 21, 22 Intermediate shaft 23, 103 Rear roller 23b, 103b Rear groove 23e Rear window 27 Protruding portion 27a Plate piece 27b Rib 28, 98 Connecting piece 28a, 98a Belt portion 28b First thick plate portion 28c Second thick plate portion 28d Protrusion 28e Locking hole 31, 32, 101, 102, 241-244 Intermediate roller 31b, 32b Intermediate recess 31e, 32e Intermediate window 33, 163, 191 , 192,221,222 Upper bracket 33b Notch 34 Lower bracket G 34c Traveling side through hole 38 Horizontal pin 73 Belt piece 73a First fitting hole 73b Second fitting hole 74 Receiving plate 74a First projection 74b Second projection 76 Presser plate 76b First locking hole 76c Second locking hole 98b Circle Columnar protrusion 98c Columnar part 98d Through hole 98e Through hole 99 Connecting pin 101e, 102e, 103e, 108e Recessed part 101f, 102f, 103f, 108f Partition wall 104 Plate 104a Cover part 111 Sled member 111a Sliding part 111b Endless track chain free insertion hole 111c Mounting portion 116h Front boss 116i Rear boss 116j, 116k Intermediate boss 116m Front flange 116n Rear flange 116p, 116q Intermediate flange 141 Stopper 160 Rear car (manual carrier)
245 Horizontal turning mechanism 246 Turning support plate 246a Support projection 247 Vertical axis

Claims (12)

A manual carrier having a loading platform on which a load is loaded, an endless track traveling device that is removably attached to the lower portion of the loading platform and travels by an endless track chain, and a handle member that is provided on the loading platform and is gripped by an operator. There,
The endless track traveling device is
A traveling base removably attached to the bottom of the loading platform;
A front roller, which is rotatably attached to the front portion of the traveling base portion via a front shaft and has a front groove having a V-shaped cross section extending in the circumferential direction on the outer peripheral surface;
A rear roller that is rotatably attached to a rear portion of the traveling base portion via a rear shaft, and has a rear groove having a V-shaped cross section extending in a circumferential direction on an outer peripheral surface;
An outer diameter is formed smaller than outer diameters of the front roller and the rear roller, and is rotatably mounted via an intermediate shaft between the front roller and the rear roller of the traveling base portion, and is circumferentially disposed on the outer peripheral surface. An intermediate roller formed with an intermediate groove having a V-shaped cross section extending to
A plurality of tapered convex portions that are spanned by the front roller and the rear roller and that can be engaged with the front concave groove, the rear concave groove, and the intermediate concave groove are formed on the inner peripheral surface at intervals in the longitudinal direction. Said endless track chain, and
Each of the plurality of convex portions formed on the endless track chain is formed at intervals in the longitudinal direction of the endless track chain, and has a V-shaped cross section of the front recess, the rear recess, and the intermediate recess. A single or a plurality of plate pieces each formed in a tapered plate shape corresponding to the shape of the plate, and extending in the longitudinal direction of the endless track chain, intersecting the plate pieces and reinforcing the plate pieces. A manual carrier comprising a single piece or a plurality of ribs provided integrally with a piece. The manual carrier according to claim 1, wherein the front roller, the rear roller, the intermediate roller, and the endless chain are each formed of weather-resistant plastic. The endless track chain is formed endlessly by sequentially connecting a plurality of one type connecting pieces of the same shape and size,
Each of the plurality of connecting pieces includes a belt portion formed in a rectangular plate shape having flexibility, and a first rectangular plate formed integrally with one end of the belt portion and thicker than the belt portion. A thick plate portion, a second thick plate portion that is integrally provided at the other end of the belt portion and formed in a rectangular plate shape thicker than the belt portion, and is provided on one surface of the second thick plate portion. A plurality of protrusions, a plurality of locking holes formed on the first thick plate portion and capable of locking a plurality of protrusions of the adjacent connecting piece, and the other surface of the second thick plate portion. The convex portion,
The plurality of protrusions of the connecting piece are locked into the plurality of locking holes of the connecting piece adjacent to the connecting piece, and the plurality of protrusions of the adjacent connecting piece are further connected to the adjacent connecting piece. The manual carrier according to claim 1 or 2, wherein the endless track chain is formed by repeating the locking structure of locking in the locking hole. The endless track chain sequentially connects a plurality of belt pieces formed in a rectangular plate shape having flexibility and a receiving plate formed in a rectangular plate shape thicker than the belt piece, and the plurality of belt pieces Formed endlessly by a plurality of presser plates preventing separation from the plurality of receiving plates, respectively.
A first insertion hole is formed on one end side of each of the plurality of belt pieces,
Second insertion holes are respectively formed on the other end sides of the plurality of belt pieces,
First protrusions that can be fitted into the second or first insertion holes of the belt piece are provided on one end side of one surface of the plurality of receiving plates, respectively.
Second protrusions that can be inserted into the first or second insertion holes of the belt pieces adjacent to the belt pieces are provided on the other end side of one surface of the plurality of receiving plates, respectively.
A first locking hole that can be locked to the first protrusion is formed on one end side of the plurality of presser plates,
A second locking hole that can be locked to the second protrusion is formed on the other end side of the plurality of presser plates,
The convex portions project from the other surfaces of the plurality of receiving plates,
The receiving plate is inserted with the second insertion hole of the belt piece inserted into the first protrusion of the receiving plate, and the first insertion hole of the belt piece adjacent to the belt piece is inserted into the second protrusion of the receiving plate. The first and second protrusions of the presser plate are respectively engaged with the first and second protrusions, and the second fitting hole of the adjacent belt piece is formed in the first protrusion of the receiving plate adjacent to the receiving plate. In the state where the first insertion hole of the belt piece further adjacent to the adjacent belt piece is inserted into the second protrusion of the adjacent receiving plate, the presser to the first and second protrusions of the adjacent receiving plate. The manual carrier according to claim 1 or 2, wherein the endless track chain is configured by repeating a locking structure in which the first and second locking holes of the presser plate adjacent to the plate are respectively locked. The endless track chain is formed endlessly by sequentially connecting a plurality of connecting pieces of the same shape and size with metal connecting pins,
Each of the plurality of connecting pieces includes a belt portion formed in a rectangular plate shape, and parallel to each other in a direction away from the belt portion at both end portions in the width direction of the belt portion of one end surface of the belt portion. A pair of columnar protrusions each formed with a pair of projecting holes through which the connecting pins can be loosely inserted, and the other end surface of the belt portion is separated from the belt portion at the center in the width direction of the belt portion. A columnar part formed with a through hole capable of press-fitting the connecting pin with a hole center coinciding with the pair of through-holes in a state of being protruded in the direction and inserted between a pair of cylindrical protrusions of an adjacent connecting piece And consist of
A plurality of recesses capable of accommodating a part of the pair of columnar protrusions are formed at equal intervals in the circumferential direction on the outer peripheral surfaces of the front roller, the rear roller, and the intermediate roller,
A plurality of partition walls partitioning the inside of the front grooves, the rear grooves, and the intermediate grooves are equidistantly spaced in the circumferential direction of the front roller, the rear roller, and the intermediate roller. Radially formed so as to face the plurality of recesses,
The connecting pin is loosely inserted into the pair of through holes of the connecting piece with the columnar portion of the connecting piece adjacent to the connecting piece inserted between the pair of columnar protrusions of the connecting piece and adjacent to the connecting piece. The connecting piece adjacent to the connecting piece is locked to the connecting piece by press-fitting into the through hole of the connecting piece, and further adjacent to the adjacent connecting piece between a pair of cylindrical protrusions of the adjacent connecting piece. With the columnar portion of the connecting piece inserted, a connecting pin different from the connecting pin is loosely inserted into the pair of through holes of the adjacent connecting piece and press-fitted into the through hole of the adjacent connecting piece. 2. The manual carrier according to claim 1, wherein the endless track chain is configured by repeating the locking structure in which the adjacent connecting piece is further locked to the adjacent connecting piece.   Of the belt portion of the connecting piece, a surface opposite to the surface contacting the outer peripheral surface of the front roller, the rear roller, and the intermediate roller is covered with a rectangular plate, and a pair of the connecting pieces is covered on this plate. The manual carrier according to claim 5, wherein a cover portion that covers an end surface of the cylindrical projection is provided integrally with the plate.   A plurality of front windows, rear windows, and intermediate windows communicating with the front recess, the rear recess, and the intermediate recess are respectively formed on outer surfaces of the front roller, the rear roller, and the intermediate roller. Item 1. The manual carrier according to Item 1. Further comprising a sled member capable of sliding on snow or grass,
The sled member has a front part or a front part and a rear part that are curved upward, a flat part at the center, and a sliding part that can slide on snow or grass, and a front roller that is formed at the center of the sliding part, and wherein the endless track chain can loosely inserted an endless track chain loosely fitted hole passed over the rear rollers above said protruding from the periphery of the endless track chain loose insertion hole of runner the front axle, the rear A plurality of attachment portions loosely fitted to both ends of the shaft and the intermediate shaft;
A pair of front holes, a pair of rear holes and a pair of intermediate holes into which both ends of the front shaft, the rear shaft and the intermediate shaft can be inserted are formed in the pair of side pieces of the traveling base,
Around the front hole, the rear hole and the intermediate hole, a front boss, a rear boss and an intermediate boss are provided integrally with the traveling base part toward the outside of the pair of side pieces,
A front flange, a rear flange and an intermediate flange are respectively provided integrally with the traveling base at the front boss, the rear boss and the intermediate boss.
The bottom surface of the sliding portion is positioned between the lower horizontal portion of the endless track chain and the intermediate shaft in a state where the plurality of attachment portions are fitted to the front boss, the rear boss, and the intermediate boss. The manual carrier of Claim 1 or 2 comprised by these. Abutting stopper is provided tip proximal end is attached to the running base portion in the endless track chain, the stopper is allowed to rotate in one of the endless track chain and prevent rotation of the other of the endless track chain The manual carrier according to claim 1, wherein the manual carrier is configured to. An upper bracket having a notch portion or a loading platform side through hole formed at the lower portion of the loading platform and attached to the upper portion of the traveling base portion so as to face the upper bracket and communicate with the notch portion or the loading platform side through hole. A lower bracket formed with a through hole is attached, and the lower bracket is engaged with the upper bracket so that the cutout portion or the loading platform side through hole and the traveling side through hole are aligned with each other. The manual carrier according to claim 1, wherein the loading platform is attached to the endless track type traveling device by inserting a horizontal pin into the loading platform side through hole and the traveling side through hole. A horizontal turning mechanism is provided between the traveling base and the lower bracket,
The horizontal turning mechanism is mounted on the upper surface of the traveling base and is provided with a turning support plate or a supporting protrusion that slidably receives the lower surface of the lower bracket, and the turning support plate and the lower bracket. The manual carrier according to claim 10, further comprising a vertical shaft that is inserted and rotatably holds the lower bracket. An endless track traveling device used in the manual carrier according to any one of claims 1 to 11.

Images