JP2022022454A - Push member and transport dolly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent user's hands from contacting with an object etc. around of a transport dolly.

SOLUTION: The invention relates to a push member 40 for a user pushing a transport dolly 1 with a hand when the transport dolly 1 is run. The push member 40 has protection parts 44, 45 which protect the user's hand which grips the push member 40. The push member 40 also has a grip part 43. The protection parts 44, 45 are located close to the grip part 43 and protrude outward further than an outer peripheral surface of the grip part 43.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a hand push member and a transport trolley. In particular, the present invention relates to a hand push member or the like that protects the user's hand from coming into contact with an object or the like around the transport trolley.

Some transport trolleys used at construction sites and the like have a configuration in which a single pipe can be inserted into the four corners of the main body of the transport trolley. For example, Patent Document 1 discloses a transport trolley in which corner members into which a single pipe can be inserted as a push rod are provided at four corners. With such a configuration, the user of the transport trolley can use the single pipe inserted into the main body of the transport trolley as a push rod when the transport trolley is moved.

Japanese Unexamined Patent Publication No. 2010-159054

By the way, when moving the transport trolley using the push rod, there is a possibility that the hand of the user who is holding (holding) the push rod may come into contact with an object existing in the vicinity such as a wall.
The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to prevent the user's hand from coming into contact with an object or the like around the carrier.

The present invention is characterized by having a hand-pushing member for the user to push by hand when traveling the transport trolley, and having a protective portion for protecting the user's hand holding the hand-pushing member.
The present invention is a transport trolley having a trolley main body portion for loading a transported object and traveling by a traveling portion, and a hand-pushing member provided on the trolley main body portion for being pushed by a user by hand. The hand-pushing member is characterized by having a protective portion that projects outward from the outer shape of the trolley main body and protects the user's hand holding the hand-pushing member in a plan view of the transporting trolley.

According to the present invention, it is possible to prevent the user's hand from coming into contact with an object or the like around the carrier.

It is a figure which shows the structural example of the transport cart and the hand push member of 1st Embodiment. It is external perspective view which shows the structural example of the protective member schematically. It is sectional drawing which shows the structural example of the protective member schematically. It is a figure explaining the effect of a hand push member. It is a figure explaining the effect of a hand push member. It is a figure which shows typically the structural example of the protective member of 2nd Embodiment. It is a figure which shows the structural example of the transport cart and the hand push member of 3rd Embodiment. It is a figure which shows the structural example of a hand push member and a protective member. It is a figure which shows the structural example of a reinforcing member. It is a figure which shows the structural example of the transport cart and the hand push member of 4th Embodiment. It is a figure which shows the structural example of a hand push member and a protective member. It is a perspective view which shows the structural example of the transport trolley which attached the side wall. It is a figure which shows the state in which the hand push members are stacked. It is a figure which shows the structural example of the hand push member of 5th Embodiment. It is a perspective view which shows the structural example of the protection member of 6th Embodiment. It is a figure which shows the structural example of the transport trolley which attached the side wall. It is a figure which shows the structural example of the transport trolley which attached the side wall.

Hereinafter, the transport trolley and the hand push member according to the embodiment will be described with reference to the drawings. For convenience of explanation, the vertical direction of the push member and the protective member shown in each of the following embodiments is based on the direction in which the push member is mounted on the bogie main body. In addition, the front-rear direction of the transport trolley is the longitudinal direction of the transport trolley, and the left-right direction is the lateral direction of the transport trolley. However, the transport trolley of the present embodiment can travel in any direction including front, rear, left and right.

<First Embodiment>
FIG. 1 is a diagram showing a configuration example of a transport trolley and a hand push member according to the first embodiment.
The transport trolley 1 includes a trolley main body portion 20, a traveling portion 30, and a hand push member 40.
First, the carriage main body 20 will be described.
The dolly main body 20 is configured by connecting a plurality of frame parts and the like, and loads a transported object. The bogie body 20 has a rectangular shape with the front-rear direction as the longitudinal direction and the left-right direction as the lateral direction in a plan view. The bogie body 20 has a front frame portion 21a, a rear frame portion 21b, a right frame portion 21c, a left frame portion 21d, a corner member 22, a reinforcing frame portion (reinforcing portion) 25, a mounting plate 26, and the like. ..

For the front frame portion 21a, the rear frame portion 21b, the right frame portion 21c, and the left frame portion 21d, for example, a square hollow pipe made of an aluminum alloy or the like can be used. Further, the corner member 22 is made of an aluminum alloy formed by, for example, extrusion molding. The corner member 22 has an insertion hole 23 that opens upward and a stopper portion 24 (see FIG. 8) that closes the lower part. The hand push member 40 is inserted into the insertion hole 23 of the corner member 22. The lower end of the hand pushing member 40 inserted into the insertion hole 23 is supported by the stopper portion 24.

The front frame portion 21a, the rear frame portion 21b, the right frame portion 21c, and the left frame portion 21d are joined by the corner member 22 at four corners to form a rectangular four-sided frame. In the frame, a plurality of reinforcing frame portions 25 are attached to each other in the front-rear, left-right directions, and are joined by screws, rivets, welding, or the like to form a grid pattern. For the reinforcing frame portion 25, for example, a square hollow pipe made of an aluminum alloy, a plate having an uneven cross section, or the like can be used.
The mounting plate 26 is a flat plate for loading a transported object. The mounting plate 26 is connected to each frame portion and each reinforcing frame portion 25 via rivets or screws.

The traveling unit 30 travels on the traveling surface while supporting the load of the bogie main body 20 and the transported object. The traveling unit 30 has a plurality of casters 31. In the present embodiment, the traveling unit 30 has six casters, four casters 31 arranged at the four corners of the bogie main body 20, and two casters 31 arranged at the center in the front-rear direction and separated from each other to the left and right. Have. Each of the casters 31 is attached to the bogie main body 20 via a mounting plate.

The hand push member 40 is a member for the user to push by hand when the transport trolley 1 is driven. The hand push member 40 has a long shape having a length of about 1000 mm. The hand push member 40 is attached to the bogie main body 20 by inserting the lower end into the insertion hole 23 of the corner member 22. The transport trolley 1 of the present embodiment has four hand push members 40 and is inserted into the insertion holes 23 of each corner member 22. The four hand push members 40 all have the same configuration. However, the case is not limited to the case where the four hand push members 40 are attached, and one, two or three hand push members 40 may be attached.

The hand push member 40 has a main body member 41 as a main body portion and a protective member 42.
The main body member 41 is a long and pipe-shaped member. For the main body member 41, for example, a single pipe (single pipe) can be applied. The single pipe is a carbon steel pipe for general structure specified in JIS G 3444, and is a circular pipe having an outer diameter of 48.6 mm. However, the main body member 41 is not limited to the single tube having the above-mentioned dimensions, and various rod-shaped or tubular members can be applied.

The protective member 42 protects the user's hand. The protective member 42 is detachably attached to the upper end portion of the main body member 41. A user (construction worker or the like) can move the transport trolley 1 by grasping the protective member 42 attached to the main body member 41.

2A and 2B are external perspective views schematically showing a configuration example of the protective member 42, where FIG. 2A is a view seen from an oblique upper side, and FIG. 2B is a view seen from an oblique lower side. FIG. 3 is a cross-sectional view schematically showing a configuration example of the protective member 42.
As shown in FIGS. 2 and 3, the protective member 42 has a grip portion 43, a first protective portion 44, and a second protective portion 45, which are integrally formed. Further, the protective member 42 is formed with a mounting hole 46 in which the upper end portion of the main body member 41 can be inserted and opens to the lower side (the side opposite to the first protective portion 44 in the vertical direction). The protective member 42 is made of a resin material such as polyethylene, and is integrally formed by injection molding.

The grip portion 43 has a substantially cylindrical shape and has dimensions that can be grasped (grasped) by the user with one hand. For example, the length (vertical dimension) is preferably in the range of 100 to 200 mm, and further preferably in the range of 120 to 180 mm so that the user can grasp it with one hand. When a single tube is used for the main body member 41, for example, the outer diameter is preferably in the range of 50 to 60 mm. However, the specific dimensions are not particularly limited. Further, the surface of the grip portion 43 may be provided with an uneven pattern for preventing slipping.

The first protective portion 44 and the second protective portion 45 are provided in close proximity to the grip portion 43. Specifically, the first protective portion 44 is provided at one end (upper side) of the grip portion 43 in the vertical direction (axial direction of the main body member 41), and the second protective portion 45 is provided above and below the grip portion 43. Provided at the other end (lower side) of the direction.
Both the first protective portion 44 and the second protective portion 45 project outward from the outer peripheral surface of the grip portion 43 and have an outer diameter larger than that of the grip portion 43. In particular, the outer diameters of the first protective portion 44 and the second protective portion 45 are such that the user's hand H (fingers) holding the grip portion 43 is the first protective portion 44 and the second protective portion 45 in a plan view. The dimensions are set so that they do not overlap with the protective portion 45 and do not protrude (fit inside the outline in a plan view). Specifically, for example, the outer diameters of the first protective portion 44 and the second protective portion 45 are preferably in the range of 100 to 140 mm, and more preferably in the range of 110 to 130 mm. However, the specific dimensions are not particularly limited.

The first protective portion 44 has a substantially circular shape in a plan view, and has a tapered shape in which the outer diameter decreases toward the upper side (the side opposite to the grip portion 43). The side surface 47 (the surface on the outer side in the radial direction) of the first protective portion 44 is formed on a curved surface that bulges outward in the radial direction and diagonally upward in the side view. The upper surface 48 (the surface opposite to the grip portion 43) of the first protective portion 44 is formed on a dome-shaped curved surface that bulges upward. The side surface 47 and the upper surface 48 of the first protective portion 44 are smoothly connected by a curved surface. The lower surface 49 of the first protective portion 44 may be a flat surface. However, it is preferable that the side surface 47 and the lower surface 49 of the first protective portion 44 are smoothly connected by a curved surface. As described above, in the side view, the contour lines of the side surface 47 and the upper surface 48 of the first protection portion 44 are formed by a curved line.
However, the shape of the first protective portion 44 is not limited to the above-mentioned shape. For example, the shape of the first protective portion 44 may be a disk shape or a substantially hemispherical shape that bulges upward.

The second protective portion 45 has a shape in which the first protective portion 44 is inverted in the vertical direction. However, the shape of the second protective portion 45 is not limited to the above-mentioned shape. For example, the shape of the second protective portion 45 may be a disk shape or a substantially hemispherical shape that bulges downward.
The mounting hole 46 is a hole (recess) into which the main body member 41 can be inserted, and the lower side (the side of the second protective portion 45) opens. The inner diameter of the mounting hole 46 is set according to the outer diameter of the main body member 41. For example, when the main body member 41 is inserted into the mounting hole 46, the size is set so that the protective member 42 does not easily come off from the main body member 41. Further, the depth of the mounting hole 46 is not particularly limited, but is set to at least a depth that does not come off when a force is applied in the lateral direction during use.

Therefore, the protective member 42 can be mounted on the main body member 41 by inserting the upper end portion of the main body member 41 into the mounting hole 46 (see FIG. 1). The user can attach the hand push member 40 to the bogie main body 20 by inserting the hand push member 40 having the protective member 42 attached to the main body member 41 into the insertion holes 23 of each corner member 22. A person can move the transport trolley 1 by grasping the grip portion 43 of the hand push member 40 by hand.

Here, the effect of the hand push member 40 according to the first embodiment will be described with reference to FIGS. 4 and 5. 4 and 5 are views for explaining the effect of the hand push member 40. Specifically, FIG. 4 is a diagram schematically showing a state in which the upper end portion of the hand push member 40 approaches an object W such as a wall while the transport carriage 1 is moving. FIG. 5 is a diagram schematically showing a state in which the plate material, which is the transported object B of the transport vehicle 1, leans against the upper end portion of the hand push member 40.

As shown in FIG. 4, while the transport trolley 1 is moving, the upper end portion of the hand push member 40 may approach an object W such as a wall. At this time, if the protective member 42 is not attached to the upper end portion of the main body member 41 and the user simply directly grasps the upper end portion of the main body member 41, the user's hand H (fingers or back of the hand) It may come into contact with the object W or be sandwiched between the main body member 41 and the object W. On the other hand, as shown in FIG. 4, when the protective member 42 is attached to the upper end portion of the main body member 41 and the grip portion 43 of the protective member 42 is gripped (when gripped), the hand push member 40 When the upper end portion approaches the object W, the first protective portion 44 and the second protective portion 45 come into contact with the object W, so that the hand H of the user holding the grip portion 43 comes into contact with the object W. Can be prevented or suppressed.

As shown in FIG. 5, when the plate-shaped material is transported by the transport carriage 1, the plate-shaped material may be leaned against the upper end portion of the hand push member 40. At this time, by leaning the plate-shaped material which is the transported object B against the first protective portion 44 of the protective member 42, it is possible to secure a space for the user to grasp the hand push member 40, and the user's hand H It is possible to prevent or prevent (particularly the finger) from coming into contact with the transported object B. Here, the side surface 47 of the first protective portion 44 is a curved surface that bulges diagonally upward, the upper surface 48 is a curved surface that bulges upward, and the side surface 47 and the upper surface 48 are smoothly curved. linked. Therefore, when the transported object B leans diagonally above the first protective portion 44, the transported object B is received on the curved surface. Therefore, the formation of contact marks on the transported object B is prevented or suppressed.

The material handling object B of the material handling trolley 1 may move during transportation and approach the upper end portion of the hand push member 40. Also in this case, the moved object B comes into contact with the first protective portion 44 and the second protective portion 45, so that the conveyed object B comes into contact with the hand H of the user holding the grip portion 43. Is prevented or suppressed. At this time, since the first protective portion 44 and the second protective portion 45 are not provided with sharp portions toward the outer side in the radial direction, they come into contact with the first protective portion 44 and the second protective portion 45. The formation of contact marks on the transported object B is prevented or suppressed.

As described above, according to the hand push member 40 according to the first embodiment, the object W around the transport trolley 1 and the transport trolley 1 are placed in the hand H of the user holding the hand push member 40 of the transport trolley 1. The contact of the transported object B is prevented or suppressed. Further, even when the transported object B comes into contact with the protective member 42, the formation of contact marks on the transported object B is prevented or suppressed.

<Second embodiment>
Next, the configuration of the hand push member according to the second embodiment will be described with reference to FIG.
6A and 6B are views schematically showing a configuration example of the protective member 52 among the hand-pushing members according to the second embodiment, FIG. 6A is a view seen from above, and FIG. 6B is a view seen from below. It is a figure. The same configurations as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 6, the protective member 52 has an insertion portion 53 and a protective portion 54, which are integrally formed. The protective member 52 is made of a resin material such as polyethylene, and is integrally formed by injection molding.

The insertion portion 53 is a portion having a cylindrical or columnar structure, and is a portion to be inserted inside the upper end portion of the main body member 41. The outer diameter of the insertion portion 53 is set according to the inner diameter of the main body member 41 to be applied. For example, when the insertion portion 53 is inserted into the main body member 41, the size is set so that the protective member 52 does not easily separate from the main body member 41.

The protection portion 54 is a portion provided on the upper side of the insertion portion 53. The protective portion 54 projects outward from the outer peripheral surface of the main body member 41 to be applied. The protective portion 54 is, for example, substantially circular in a plan view. The outer diameter of the protective portion 54 is such that the finger of the user holding the upper end portion of the main body member 41 does not protrude from the protective portion 54 in a plan view (it fits inside the outer line of the protective portion 54 in a plan view). Set to dimensions. Specifically, the outer diameter of the protective portion 54 is preferably in the range of 100 to 140 mm, and more preferably in the range of 110 to 130 mm. However, the specific dimensions are not particularly limited.

The same shape as the first protective portion 44 of the protective member 42 according to the first embodiment can be applied to the protective portion 54. That is, the protective portion 54 has a tapered shape in which the outer diameter decreases toward the upper side (the side opposite to the insertion portion 53). The side surface 57 of the protective portion 54 is formed on a curved surface that bulges outward in the radial direction and diagonally upward in the side view. The upper surface 58 (the surface opposite to the insertion portion 53) of the protective portion 54 is formed on a dome-shaped curved surface that bulges upward. The side surface 57 and the upper surface 58 of the protective portion 54 are smoothly connected by a curved surface. As described above, in the side view, the contour lines of the side surface 57 and the upper surface 58 of the protection portion 54 are curved. Further, the lower surface 59 of the protective portion 54 (the surface facing the insertion portion 53) may be a substantially flat surface. The side surface 57 and the lower surface 59 of the protective portion 54 are smoothly connected by a curved surface.

Therefore, the protective member 52 can be attached to the main body member 41 by inserting the insertion portion 53 into the upper end portion of the main body member 41. The user can attach the hand-pushing member to the bogie main body 20 by inserting the hand-pushing member having the protective member 52 attached to the main body member 41 into the insertion hole 23 of the corner member 22, and the user can use his / her hand. The main body member 41 close to the protective portion 54 can be gripped as a grip portion to move the transport trolley. According to the second embodiment, the same effect as that of the first embodiment can be obtained.

<Third embodiment>
Next, the configuration of the transport trolley and the hand push member according to the third embodiment will be described.
FIG. 7 is a diagram showing a configuration example of the transport trolley and the hand push member according to the third embodiment. The same configurations as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.
The transport trolley 2 includes a trolley main body portion 20, a traveling portion 30, and a hand push member 60.

The hand push member 60 has a main body member 61 as a main body portion, a protective member 63, and a reinforcing member 70.
The main body member 61 is a long and pipe-shaped member. Unlike the first embodiment, the main body member 61 of the present embodiment is made of an aluminum alloy in order to reduce the weight, and is formed by extrusion molding. Further, the main body member 61 of the present embodiment has a different color from the bogie main body portion 20, specifically, the front side frame portion 21a, the rear side frame portion 21b, the right side frame portion 21c, and the left side frame portion 21d in order to improve visibility. Is attached. For example, when the front frame portion 21a, the rear frame portion 21b, the right frame portion 21c, and the left frame portion 21d are metallic colors such as silver, the colors are different from the metallic colors, such as red, green, and blue. It may be the three primary colors, orange or the like.
Further, the main body member 61 of the present embodiment has an outer diameter of, for example, 42 to 45 mm (here, 44 mm) so that the user can easily grasp it, and is a circular tube having a smaller diameter than that of the first embodiment. Further, the main body member 61 of the present embodiment is internally reinforced in a cross shape in order to improve the strength. However, the main body member 61 is not limited to the above-mentioned dimensions, and various rod-shaped or tubular members, the above-mentioned single tube, and the like can be applied.

8A and 8B are views showing a configuration example of the hand-pushing member 60 and the protective member 63, where FIG. 8A is a side view of the hand-pushing member 60 and FIG. 8B is a sectional view taken along line I-I.
The protective member 63 protects the user's hand and serves as an index indicating the maximum loading height when the transported object is loaded. The protective member 63 is above the main body member 61 and is fixed at a position separated from the upper end by a predetermined distance with bolts, rivets, or the like. The protective member 63 of the present embodiment is preferably fixed at a position 100 to 200 mm away from the upper end of the main body member 61, and further preferably fixed at a position 120 to 180 mm away. Of the main body member 61, the range from the upper end of the main body member 61 to the upper end of the protective member 63 functions as the grip portion 62.
The protective member 63 has a protective portion 64 and a mounting portion 65, which are integrally formed. Further, the protective member 63 has a mounting hole 66 that opens up and down to insert the main body member 61 inside. The protective member 63 is made of a resin material such as polyethylene, and is integrally formed by injection molding. The protective member 63 is colored differently from the bogie main body portion 20, specifically, the front side frame portion 21a, the rear side frame portion 21b, the right side frame portion 21c, and the left side frame portion 21d in order to improve visibility. For example, when the front frame portion 21a, the rear frame portion 21b, the right frame portion 21c, and the left frame portion 21d are metallic colors such as silver, the colors are different from the metallic colors, such as red, green, and blue. It may be the three primary colors, orange or the like. The protective member 63 has a different color from that of the main body member 61, but may have the same color.

The protective portion 64 has a disk shape protruding outward from the outer peripheral surface of the grip portion 62, and has an outer diameter larger than that of the grip portion 62. In particular, the outer diameter of the protective portion 64 is set to such a dimension that the user's hand holding the grip portion 62 does not overlap with the protective portion 64 in a plan view (it fits inside the outline in a plan view). Will be done. Specifically, the outer diameter of the protective portion 64 is preferably in the range of 100 to 140 mm, and more preferably in the range of 110 to 130 mm. However, the specific dimensions are not particularly limited.
The mounting portion 65 has a cylindrical shape extending downward from the lower end of the protective portion 64, and has an outer diameter larger than that of the main body member 61 and smaller than that of the protective portion 64. The length (vertical dimension) of the mounting portion 65 is not particularly limited, but is set to a length that allows the mounting portion 65 to be fixed to the main body member 61 with bolts, rivets, or the like.

The mounting hole 66 is a hole into which the main body member 61 can be inserted. The inner diameter of the mounting hole 66 is set according to the outer diameter of the main body member 61.
Therefore, by inserting the main body member 61 into the mounting hole 66 and fixing the mounting portion 65 to the main body member 61 at a predetermined position from the upper end of the main body member 61 with bolts, rivets, or the like, the protective member 63 is attached to the main body member 61. Can be fixed.

The reinforcing member 70 is fixed to the lower end of the main body member 61, specifically, at a position close to the lower end with bolts, rivets, or the like. The reinforcing member 70 reinforces the strength of the main body member 61 and suppresses rattling with the insertion hole 23 when the main body member 61 is inserted into the insertion hole 23 of the corner member 22. The reinforcing member 70 is made of, for example, an aluminum alloy.
9A and 9B are views showing a configuration example of the reinforcing member 70, FIG. 9A is a sectional view taken along line II-II shown in FIG. 8A, and FIG. 9B is a view showing an insertion hole 23 of the corner member 22. Is.

As shown in FIG. 9A, the reinforcing member 70 is cylindrical and has an outer diameter larger than the outer diameter of the main body member 61. The reinforcing member 70 has a plurality of (here, two) bulging portions 71a and 71b in which a part of the outer peripheral surface bulges in the radial direction. The bulging portions 71a and 71b project radially through the gently sloping portion 72. Further, the lower end of the reinforcing member 70 has a tapered shape in which the outer diameter decreases toward the lower side. The length (vertical dimension) of the reinforcing member 70 is not particularly limited, but is set to be substantially the same as the depth of the insertion hole 23 of the corner member 22. Further, the reinforcing member 70 has a mounting hole 73 that opens up and down to insert the main body member 61 inside.
Therefore, by inserting the main body member 61 into the mounting hole 73 and fixing the reinforcing member 70 to the main body member 61 at a predetermined position from the lower end of the main body member 61 with bolts, rivets, or the like, the reinforcing member 70 is attached to the main body member 61. Can be fixed.

On the other hand, as shown in FIG. 9B, the insertion hole 23 into which the reinforcing member 70 is inserted is surrounded by planes 75a, 75b, 75c and an arc surface 75d substantially the same as the circular radius of curvature of the reinforcing member 70. It has been. Further, the insertion hole 23 has spaces 76a and 76b as recesses that allow insertion of the bulging portions 71a and 71b of the reinforcing member 70. Therefore, by aligning the bulging portions 71a and 71b with the spaces 76a and 76b and inserting the reinforcing member 70 fixed to the main body member 61 into the insertion hole 23, the hand pushing member 60 is positioned at a predetermined position.

The user attaches the hand push member 60 to the bogie main body 20 by inserting the hand push member 60 having the protective member 63 and the reinforcing member 70 fixed to the main body member 61 into each insertion hole 23 of the corner member 22. Can be done. The user can move the transport trolley 2 by grasping the grip portion 62 of the hand push member 60 by hand. According to the third embodiment, the same effect as that of the first embodiment can be obtained.

Further, in the present embodiment, since the main body member 61 having a diameter smaller than that of the single tube is used, the user can easily grasp the grip portion 62 of the main body member 61. On the other hand, in order to reinforce the decrease in strength due to the small diameter, the reinforcing member 70 is fixed to the lower end of the main body member 61. Therefore, the strength of the hand push member 60 can be improved. However, even when a single pipe or a member other than the single pipe is used for the main body member 61, the reinforcing member 70 may be fixed to the lower end of the main body member 61.
Further, in the present embodiment, when the reinforcing member 70 is inserted into the insertion hole 23, the inclined portion 72 of the reinforcing member 70 is in contact with the flat surfaces 75b, 75c and the arc surface 75d. Therefore, as compared with the case where the circular main body member 61 is simply inserted, the contact area between the reinforcing member 70 and the insertion hole 23 is increased by interposing the reinforcing member 70, so that the corner member 22 is loose with the insertion hole 23. Can be reduced.

Further, in the plan view shown in FIG. 8B, a part of the protective portion 64 is superimposed on the bogie main body portion 20 (see the two-dot chain line). Therefore, it is possible to prevent the transported object from being loaded higher than the protected unit 64 because the transported object and the protected unit 64 interfere with each other when the transported object is loaded on the trolley main body unit 20. That is, the protection unit 64 serves as an index indicating the maximum load height. Therefore, the user can suppress the position of the center of gravity of the transport trolley 2 loaded with the transported object from becoming high, and the user can stably run the transport trolley 2. In addition, in order to notify the user that the protection unit 64 is an index indicating the maximum loading height, it is indicated by a seal or the like that the transported object should not be loaded beyond the protection unit 64, such as a hand push member 60 or a trolley. It is attached to the main body 20 and the like.
The protective member 63 may be rotatably arranged with respect to the main body member 61 around the axis of the mounting hole 66 at a position separated from the upper end of the main body member 61 by a predetermined distance. In this case, when the protective portion 64 of the protective member 63 comes into contact with an object W such as a wall, the protective member 63 rotates, and the impact when the protective member 63 comes into contact can be suppressed.

<Fourth Embodiment>
Next, the configuration of the transport trolley and the hand push member according to the fourth embodiment will be described.
FIG. 10 is a diagram showing a configuration example of a transport trolley and a hand push member according to a fourth embodiment. The same components as those in the third embodiment are designated by the same reference numerals, and the description thereof will be omitted.
The transport trolley 3 includes a trolley main body portion 20, a traveling portion 30, and a hand push member 80 (80a to 80d).

The hand push member 80 has a main body member 61 as a main body portion, a protective member 83, and a reinforcing member 70. As the main body member 61 and the reinforcing member 70, the same members as in the third embodiment can be used.
11A and 11B are views showing a configuration example of the hand-pushing member 80 and the protective member 83, where FIG. 11A is a side view of the hand-pushing member 80 and FIG. 11B is a sectional view taken along line III-III.
The protective member 83 protects the user's hand and functions as a side wall mounting portion for mounting the side wall. The protective member 83 is fixed to a plurality of positions (here, two places) separated above and below the main body member 61 with bolts, rivets, or the like. Specifically, the first protective member 83 is on the upper side, and is fixed at a predetermined distance from the upper end with bolts, rivets, or the like. This position is close to the grip portion 62. On the other hand, the second protective member 83 is on the lower side and is fixed to a predetermined distance from the lower end by a bolt, a rivet or the like. This position is close to the reinforcing member 70.

The protective member 83 has a protective portion 84 and a mounting portion 65, and these are integrally formed. Further, the protective member 83 has a mounting hole 66 that opens up and down to insert the main body member 61 inside. The protective member 83 is made of a resin material such as polyethylene, and is integrally formed by injection molding. The protective member 83 is colored in the same color as the protective member 63 of the third embodiment in order to improve visibility.

The protective portion 84 has a plurality of (here, four) protruding portions 85a to 85d that protrude outward from the outer peripheral surface of the grip portion 62. The protrusions 85a to 85d extend radially from the axis side of the mounting hole 66 at equal intervals of 90 ° about the axis (center axis) along the vertical direction of the mounting hole 66. Further, the protrusions 85a to 85d have a substantially circular outer line (hereinafter referred to as a circle of the protrusions 85a to 85d). The circular shape of the protrusions 85a to 85d has an outer diameter larger than that of the grip portion 62. In particular, the outer diameters of the protruding portions 85a to 85d are dimensions in which the user's hand holding the grip portion 62 does not overlap the protective portion 84 and protrudes (fits inside the outline in the plan view). Is set to. Specifically, the circular outer diameter of the protrusions 85a to 85d is preferably in the range of 100 to 140 mm, and more preferably in the range of 110 to 130 mm. However, the specific dimensions are not particularly limited.

Further, the protective portion 84 has groove portions 86a to 86d recessed from the outside toward the center side of the protective portion 84, that is, inward, between the adjacent protrusions 85a to 85d. The groove portions 86a to 86d are formed at equal intervals of 90 ° about the axis (central axis) of the mounting hole 66. The groove portions 86a to 86d penetrate the protection portion 84 up and down. Further, the groove widths (W shown in FIG. 11B) of the groove portions 86a to 86d are set to dimensions in which the side wall described later can be fitted. Further, the groove portions 86a to 86d have inclined or arcuate support portions 87a to 87d that expand and expand so that the groove width widens toward the outside.

Here, the main body member 61 is inserted into each mounting hole 66 of the first protective member 83 and the second protective member 83, and each mounting is performed at a predetermined position from the upper end of the main body member 61 and at a predetermined position from the lower end. By fixing the portion 65 to the main body member 61 with bolts, rivets, or the like, the two protective members 83 can be fixed to the main body member 61. At this time, in the plan view of the hand push member 80, the two protective members 83 are fixed to the main body member 61 in a state where the groove portions 86a to 86d are overlapped with each other.

The user attaches the hand pushing member 80 to the bogie main body 20 by inserting the hand pushing member 80 in which the protective member 83 and the reinforcing member 70 are fixed to the main body member 61 into each insertion hole 23 of the corner member 22. Can be done. At this time, the groove portions 86a to 86d in each push member 80 are positioned by the reinforcing member 70 so as to face the front-rear direction and the left-right direction of the transport carriage 3, respectively. Further, in the plan view shown in FIG. 11B, taking the push member 80b as an example, the groove portions 86a and 86b of the groove portions 86a to 86d overlap with the bogie main body portion 20 (see the two-dot chain line).

FIG. 12 is a perspective view showing a configuration example of the transport trolley 3 to which the side walls 90A to 90D are attached.
The side walls 90A to 90D have a rectangular plate shape and cover the sides of the transport trolley 3 from the front, back, left and right, respectively. For the side walls 90A to 90D, for example, plastic cardboard is used. Plastic corrugated cardboard is a plate-shaped member made of plastic and having a hollow region, and is lightweight and has excellent rigidity. However, wood plywood, veneer, or the like may be used for the side walls 90A to 90D.

Here, the plate thicknesses of the side walls 90A to 90D are set to dimensions that can be fitted into the groove portions 86a to 86d. Further, the heights of the side walls 90A to 90D are substantially the same as the distance from the mounting plate 26 to the protective portion 84 of the protective member 83 located on the upper side. Further, the lengths of the side walls 90A and 90B (lengths in the left-right direction) are substantially the same as the lengths of the front frame portion 21a or the rear frame portion 21b. Further, the lengths of the side walls 90C and 90D (lengths in the front-rear direction) are substantially the same as the lengths of the right side frame portion 21c or the left side frame portion 21d.

Next, a case where the side walls 90A to 90D are attached to the carrier 3 will be described. For convenience of explanation, when the side walls 90A to 90D are attached to the carrier 3, the upper side of the four sides of the rectangles of the side walls 90A to 90D is the upper side, the lower side is the bottom side, and the vertical direction. The two sides are called side sides.
First, the user keeps the surfaces of the side walls 90A to 90D vertically. Next, the user can use the hand push member 80d and the hand push member 80a, the hand push member 80a and the hand push member 80b, the hand push member 80b and the hand push member 80c, and the hand push. The side walls 90A to 90D are inserted from above between the member 80c and the hand push member 80d. At this time, the side surfaces on both sides of the side walls 90A to 90D are inserted while being fitted into the grooves 86a to 86d of the hand pushing members 80a to 80d. By inserting the side walls 90A to 90D, each bottom side of the side walls 90A to 90D is supported by the upper surface of the mounting plate 26 (or the frame portion).

When the side walls 90A to 90D are supported on the mounting plate 26, each side of the side walls 90A to 90D is a groove portion 86a to 86d of the protective member 83 located above the hand push members 80a to 80d, and a lower side. It is fitted into the grooves 86a to 86d of the protective member 83 located at.
Taking the hand-pushing member 80b as an example as shown in FIG. 11B, one side side of the side wall 90D is fitted into the groove portion 86a of the protective portion 84 for both the upper and lower protective members 83. One side of the side wall 90B is fitted into the groove 86d of the protection portion 84. Similarly, the hand push members 80a, 80b, and 80d are also fitted into the two groove portions 86a to 86d at the upper and lower positions, respectively. Therefore, the side walls 90A to 90D are attached to the transport trolley 3 by the protective portion 84 of the hand push members 80a to 80d.

The transport trolley 3 to which the side walls 90A to 90D are attached can accommodate the transported object in the space surrounded by the side walls 90A to 90D. By attaching the side walls 90A to 90D so as to cover the sides of the transport trolley 3, the transport trolley 3 can be driven without dropping the transported object. That is, the user can move the transport trolley 3 by grasping the grip portion 62 of the hand push member 80 by hand. At this time, even when the object W approaches the user's hand H holding the hand pushing member 40 of the transport trolley 3, the protective portion 84 of the upper protective member 83 comes into contact with the object W, so that the grip is gripped. It is prevented or suppressed that the user's hand H holding the portion 62 comes into contact with the object W.

Further, the hand-pushing member 80 of the present embodiment can support a plurality of hand-pushing members 80 in a stacked state when the hand-pushing member 80 is stored or transported.
13A and 13B are views showing a state in which the hand push members 80 are stacked, FIG. 13A is a side view, and FIG. 13B is a view seen from the direction of arrow A shown in FIG.
As shown in FIG. 13A, in order to stack the hand-pushing members 80, the hand-pushing members 80 are stacked in a plurality of stages so as to be parallel to each other with the longitudinal direction of each hand-pushing member 80 horizontal. At this time, the hand-pushing members 80 adjacent to each other in parallel are stacked so as to be staggered in the longitudinal direction of the hand-pushing member 80 so that the protective members 83 do not overlap each other in the vertical direction.

As shown in FIG. 13B, in the first-stage push member 80, the two protrusions (here, the protrusions 85b and 85c) of the protection portion 84 of the protection member 83 are in contact with the floor surface. Therefore, the first-stage hand push member 80 is grounded to the floor surface in a stable state. Next, the stacked second-stage hand push member 80 is a support portion (here, the support portion 87c) formed between the two protrusions (here, the protrusions 85b and 85c) of the protection portion 84. Is in contact with the outer peripheral surface of the main body member 61 of the first-stage hand-pushing member 80. Further, in the first-stage push member 80, the support portion (here, the support portion 87a) formed between the two protrusions (here, the protrusions 85a and 85d) of the protection portion 84 has two. It is in contact with the outer peripheral surface of the main body member 61 of the stepped push member 80, to be exact, the outer peripheral surface of the mounting portion 65. As described above, when the plurality of hand-pushing members 80 are stacked, the protective portion 84 of the hand-pushing member 80 has support portions 87a to 87d for supporting the adjacent hand-pushing members 80 in parallel. Therefore, a plurality of hand push members 80 can be stably stacked.

The hand push member 80 is not limited to the case of stacking in two stages, and may be stacked in three stages or four or more stages as shown by the two-dot chain line in FIG. Further, the support portions 87a to 87d are not limited to the case of an inclined shape or an arc shape that expands and expands so that the groove width expands toward the outside, and the support portions 87a to 87d have a shape capable of supporting the main body member 61 of the adjacent hand push member 80. All you need is.

<Fifth Embodiment>
Next, the configuration of the hand push member according to the fifth embodiment will be described.
FIG. 14 is a diagram showing a configuration example of the hand push member according to the fifth embodiment. The hand-pushing member 100 of the present embodiment is an improvement of the hand-pushing member 60 described in the third embodiment, and the same configuration as the hand-pushing member 60 is designated by the same reference numeral, and the description thereof will be omitted. ..

The hand push member 100 has a main body member 110, a protective member 63, and a reinforcing member 70, and can be expanded and contracted in the longitudinal direction.
The main body member 110 has a first main body portion 111a and a second main body portion 111b. The first main body portion 111a and the second main body portion 111b are long and pipe-shaped members, and are made of, for example, an aluminum alloy. The first main body portion 111a constitutes the upper side of the main body member 110, and the second main body portion 111b constitutes the lower side of the main body member 110.

The protective member 63 is fixed to a predetermined position from the upper end of the first main body portion 111a. Further, the range from the upper end of the first main body portion 111a to the upper end of the protective member 63 functions as the grip portion 62. On the other hand, in the second main body portion 111b, the reinforcing member 70 is fixed to a position close to the lower end by bolts, rivets, or the like.
Here, the first main body portion 111a has an outer diameter smaller than the inner diameter of the second main body portion 111b, and the second main body portion 111b has an inner diameter larger than the outer diameter of the first main body portion 111a. That is, the lower end of the first main body 111a can be inserted into the second main body 111b from the upper end side of the second main body 111b. Therefore, the length of the main body member 110 in the longitudinal direction can be expanded or contracted by changing the length of inserting the first main body portion 111a into the second main body portion 111b, that is, the overlapping length.

Further, the main body member 110 has a holding mechanism 112 that holds the main body member 110 in an expanded / contracted length at a position where the first main body portion 111a and the second main body portion 111b overlap each other. The holding mechanism 112 includes a plurality of adjusting holes 113 formed on the outer peripheral surface of the first main body portion 111a, one insertion hole 114 formed on the outer peripheral surface of the second main body portion 111b, and the adjusting hole 113 and insertion. It has an insertion pin 115 to be inserted through the hole 114. When holding the main body member 110 at a desired length, the main body member 110 is expanded and contracted, and then the insertion pin 115 is inserted into the insertion hole 114 and the adjustment hole 113 to extend and contract the main body member 110. Can be retained.

In this way, the hand push member 100 can be expanded and contracted in length in the longitudinal direction by the main body member 110. By expanding and contracting the length of the main body member 110, the position of the protective portion 64 of the protective member 63 can be adjusted in the vertical direction. Therefore, when the protection unit 64 is used as an index of the maximum load height, the position of the protection unit 64 can be adjusted up and down as necessary. For example, since the maximum load height that can be stably traveled differs depending on the size of the dolly body 20, the hand push member 100 is expanded and contracted according to the size of the dolly body 20 to be attached to be an index of the maximum load height. The protection unit 64, which is, can be changed up and down. In addition, for example, since the standard of the maximum load height may differ depending on the group (or construction site) to which the user belongs, the manufacturer protects the maximum load height as an index for each group (or construction site). The hand-pushing member 100 can be manufactured by changing the portion 64 up and down.

In the present embodiment, the case where the holding mechanism 112 inserts the insertion pin 115 into the insertion hole 114 and the adjustment hole 113 to hold the main body member 110 to an expanded / contracted length has been described, but is limited to this case. Any holding mechanism may be used as long as it can be held so that the length is not changed carelessly.
Further, in the present embodiment, the hand-pushing member 100 in which the hand-pushing member 60 described in the third embodiment can be expanded and contracted has been described, but the present invention is not limited to this case, and the hand-pushing member of other embodiments can be expanded and contracted. You may do it. When the hand push member 40 of the first embodiment is made expandable and contractible, the height of the grip portion 43 can be adjusted. Further, when the push member 80 of the fourth embodiment is made expandable, a side wall having a height different from the height of the side walls 90A to 90D described above can be attached.

<Sixth Embodiment>
Next, the configuration of the hand push member according to the sixth embodiment will be described.
The hand-pushing member 120 of the present embodiment is an improvement of the hand-pushing member 80 described in the fourth embodiment. Here, the improved points will be mainly described, and the same configurations as those of the hand-pushing member 80 are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

The hand push member 120 has a main body member 61 as a main body portion, a protective member 123, and a reinforcing member 70. As the main body member 61 and the reinforcing member 70, the same members as in the third embodiment can be used.
FIG. 15 is a perspective view showing a configuration example of the protective member 123.
The protective member 123 protects the user's hand and functions as a side wall mounting portion for mounting the side wall. The protective member 123 has a protective portion 124.

The protective portion 124 has a plurality of (here, four) protruding portions 85a to 85d that protrude outward from the outer peripheral surface of the grip portion 62.
Further, the protective portion 124 has groove portions 126a to 126d recessed from the outside toward the center side of the protective portion 84, that is, inward, between the adjacent protrusions 85a to 85d. The groove portions 126a to 126d are formed at intervals of approximately 90 ° about the axis (central axis) of the mounting hole 66. The groove portions 126a to 126d penetrate the protection portion 124 up and down.

The groove portions 126a to 126d of the present embodiment are set so that two types of side walls having different plate thicknesses can be attached. Specifically, the groove widths of the groove portions 126a and 126b are set to the dimension W1 into which a thick side wall can be fitted. Further, the groove widths of the groove portions 126c and 126d are set to the dimension W2 in which the side wall having a thin plate thickness can be fitted. The relationship between the dimension W1 and the dimension W2 is W1> W2. Here, when focusing on one groove portion, the groove width of the groove portion of interest is substantially the same as the groove width of one of the adjacent groove portions, and is different from the groove width of the other groove portion.
At the boundary between the groove portions 126a to 126d and the upper surface of the protection portion 124, an inclined portion 127 is provided so that the groove width widens toward the upper side so that the side wall can be easily fitted from the upper side.

Here, when the two protective members 123 are fixed to the main body member 61, they are fixed to the main body member 61 in a state where the groove portions 126a to 126d are overlapped with each other in the plan view of the push member 120.
The user attaches the hand push member 120 to the bogie main body 20 by inserting the hand push member 120 having the protective member 123 and the reinforcing member 70 fixed to the main body member 61 into each insertion hole 23 of the corner member 22. Can be done. At this time, the groove portions 126a to 126d in each push member 120 are positioned by the reinforcing member 70 so as to face the front-rear direction and the left-right direction of the transport carriage 3, respectively, according to the plate thickness of the side wall attached to the transport carriage 3. ..

FIG. 16 is a plan view for explaining the direction in which the hand push member 120 is positioned when the thick side walls 91A to 91D are attached to the transport carriage 3. Here, for example, plastic cardboard or the like is used as the side walls 91A to 91D having a thick plate thickness.
When the side walls 91A to 91D having a thick plate thickness are attached, the push member 120 is positioned on the corner member 22 so that the groove portions 126a and 126b of the protection portion 124 overlap with the bogie main body portion 20. Therefore, among the protective portions 124 located at the four corners in a plan view, the groove portion 126a having the groove width of the dimension W1 and the groove portion 126b having the groove width of the dimension W1 face each other between the adjacent protective portions 124.
The user can use the groove portion 126a of the hand push member 120d and the groove portion 126b of the hand push member 120a, the groove portion 126a of the hand push member 120a and the groove portion 126b of the hand push member 120b, and the groove portion 126a of the hand push member 120b. The side walls 91A to 91D are inserted from above between the groove portion 126b of the hand push member 120c and between the groove portion 126a of the hand push member 120c and the groove portion 126b of the hand push member 120d. Therefore, the thick side walls 91A to 91D are attached to the transport carriage 3 by the protective portion 123 of the hand push members 120a to 120d.

FIG. 17 is a plan view for explaining the direction in which the hand push member 120 is positioned when the side walls 92A to 92D having a thin plate thickness are attached to the transport carriage 3. Here, as the side walls 92A to 92D having a thin plate thickness, for example, wood plywood or veneer is used.
When the side walls 92A to 92D having a thin plate thickness are attached, the push member 120 is positioned on the corner member 22 so that the groove portions 126c and 126d of the protection portion 124 overlap with the bogie main body portion 20, respectively. Therefore, among the protective portions 124 located at the four corners in the plan view, the groove portion 126c having the groove width of the dimension W2 and the groove portion 126d having the groove width of the dimension W2 face each other between the adjacent protective portions 124.
The user can use the groove portion 126c of the hand push member 120d and the groove portion 126d of the hand push member 120a, the groove portion 126c of the hand push member 120a and the groove portion 126d of the hand push member 120b, and the groove portion 126c of the hand push member 120b. The side walls 92A to 92D are inserted from above between the groove portion 126d of the hand push member 120c and between the groove portion 126c of the hand push member 120c and the groove portion 126d of the hand push member 120d. Therefore, the side walls 92A to 92D having a thin plate thickness are attached to the transport carriage 3 by the protective portion 123 of the hand push members 120a to 120d.

In this way, the groove portions 126a to 126d of the protective member 123 of the hand push member 120 can be fitted with side walls having different plate thicknesses. And the rattling of the groove portions 126a to 126d can be suppressed.

Although each embodiment of the present invention has been described in detail with reference to the drawings, the above-described embodiment merely shows a specific example in carrying out the present invention. The technical scope of the present invention is not limited to each of the above-described embodiments, and each embodiment may be combined. For example, the protective member 52 of the second embodiment may be attached to the upper end of the hand push member 60 of the third embodiment, the hand push member 100 of the fifth embodiment, or the like. The present invention can be modified in various ways without departing from the spirit of the present invention, and these are also included in the technical scope of the present invention.

In the first embodiment described above, the case where the protective member has the first protective portion 44 and the second protective portion 45 has been described, but the first protective portion 44 or the second protective portion 45 is provided. It may not have a configuration. Further, in the first to sixth embodiments, the case where the protective portion is substantially circular in a plan view has been described, but the shape of the protective portion in a plan view is not limited to a circle. For example, it may be a polygon with rounded corners.
In the fourth and sixth embodiments described above, the case where the side wall is fitted in the groove portion of the protective portion has been described, but the relationship between the groove portion and the portion fitted in the groove portion may be reversed. That is, for example, a groove portion may be formed in the center of the plate thickness along the side side of the side wall, and a protrusion fitted in the groove of the side wall may be formed in the protective portion.

1-3: Transport trolley 20: Truck main body 30: Traveling part 40: Hand push member 41: Main body member 42: Protective member 43: Grip part 44: First protective part 45: Second protective part 52: Protective member 54: Protective part 60: Hand push member 61: Main body member 62: Grip part 63: Protective member 64: Protective part 70: Reinforcing member 80: Hand push member 83: Protective member 85a to 85d: Protruding part 86a to 86c: Groove part 87a ~ 87d: Support part 90A ~ 90D: Side wall 100: Hand push member 110: Main body member 111a: First main body part 111b: Second main body part 112: Holding mechanism 120: Hand push member 123: Protective member 124: Protective part 126a-126d: Groove

INDUSTRIAL APPLICABILITY The present invention is attached to the trolley body by inserting it into an insertion hole opened upward in the trolley body of the transport trolley, and is a hand for the user to push by hand when traveling the transport trolley. A push member, a grip portion that the user grips by hand, and a protective portion that projects outward from the outer peripheral surface of the grip portion and protects the hand that grips the grip portion from contact with surrounding objects. It is characterized by having .

Claims (10)

It is a hand-pushing member for the user to push by hand when running the transport trolley.
A hand-pushing member having a protective portion for protecting the user's hand holding the hand-pushing member. Has a grip
The hand-pushing member according to claim 1, wherein the protective portion is close to the grip portion and protrudes outward from the outer peripheral surface of the grip portion. It has a long body and has a long body.
The hand-pushing member according to claim 1 or 2, wherein the protective portion is provided on the main body portion and protrudes outward from the outer peripheral surface of the main body portion. The hand-pushing member according to claim 3, wherein the protective portion is arranged at a position away from the end portion of the main body portion. The hand-pushing member according to claim 3 or 4, wherein the protective portion has a substantially circular shape larger than the outer diameter of the main body portion. The protective portion has a groove portion into which a side wall for covering the side of the transport trolley is fitted.
The hand-pushing member according to any one of claims 1 to 5, wherein the groove portion has a shape recessed from the outside of the protection portion toward the center side. One of claims 1 to 6, wherein the protective portion has a support portion that supports the main body portion of the adjacent hand push members when the plurality of hand push members are stacked in a parallel state. The hand-pushing member according to item 1. The hand-pushing member according to any one of claims 1 to 7, wherein the main body portion is expandable and contractible. The protective section has four said grooves at intervals of approximately 90 °.
6 The hand-pushing member described in. The main body of the dolly that loads the items to be transported and travels by the traveling unit,
A transport trolley provided on the trolley main body and having a hand-pushing member for the user to push by hand.
The hand-pushing member is characterized by having a protective portion that projects outward from the outer shape of the trolley main body and protects the hand of a user who has grasped the hand-pushing member in a plan view of the transport trolley. Transport trolley.

Images