JP2023176142A - Hand-push member and protective member - Google Patents

Abstract

To provide a hand-push member fitted with a protective member.SOLUTION: A hand-push member 40 which is fitted by inserting, from the above, into an insertion hole 23 formed at a carriage body part 20 of a transport carriage 1, is separated from the insertion hole 23 by being pulled upward above, and is grasped by the hand when traveling the transport carriage 1, includes: a rod-like body member 41 running along a vertical direction; and a protective member 60 covering a top end of the body member 41.SELECTED DRAWING: Figure 1

Description

The present invention relates to a hand push member and a protection member.

Some transport carts used at work sites such as construction sites have a structure in which a single pipe can be inserted into the four corners of the main body of the transport cart. For example, Patent Document 1 discloses a transportation cart that is provided with corner members at four corners into which a single tube can be inserted as a push rod. With this configuration, the user of the carrier can use the single tube inserted into the main body of the carrier as a push rod when moving the carrier.

Japanese Patent Application Publication No. 2010-159054

Since the hand push member is removably attached to the main body of the carrier, there is a risk that it will be damaged if it comes into contact with the floor or the like when removed from the main body of the cart and stored.
The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to protect a hand-held member.

The present invention provides a hand that is attached by being inserted from above into an insertion hole provided in a main body of a transport cart, and detached from the insertion hole by pulling upward, and that is gripped by hand when traveling the transport cart. The pushing member is characterized by having a rod-shaped main body member extending in the vertical direction and a protective member covering the upper end of the main body member.

According to the present invention, the hand-held member can be protected.

It is a figure showing an example of composition of a transportation truck and a push member. FIG. 2 is a perspective view showing an example in which a part of the hand-holding member of the first embodiment is disassembled. It is a figure showing an example of composition of a manual member of a 1st embodiment. FIG. 3 is a diagram showing an example of the configuration of a reinforcing member. It is a figure showing an example of composition of a protection member of a 1st embodiment. 7 is a diagram illustrating an example of the configuration of a protection member of Modification 1-1. FIG. 7 is a diagram illustrating an example of the configuration of a protection member of Modification 1-2. FIG. 7 is a diagram illustrating an example of the configuration of a protection member of Modification 1-3. FIG. 7 is a diagram illustrating an example of the configuration of a protection member of Modification 1-4. FIG. 7 is a diagram illustrating an example of the configuration of a protection member of Modification 1-5. FIG. It is a figure which shows an example of the structure of the protection member of 2nd Embodiment. 7 is a diagram illustrating an example of the configuration of a protection member of Modification 2-1. FIG. 7 is a diagram showing an example of the configuration of a protection member of Modification 2-2. FIG. FIG. 7 is a diagram showing an example of the configuration of a protection member of Modification 2-3. It is a perspective view which shows an example which disassemble|disassembled a part of the hand-held member of 3rd Embodiment. It is a figure which shows an example of the structure of the protection member of 3rd Embodiment.

EMBODIMENT OF THE INVENTION Below, the hand-held member and protection member based on this invention are demonstrated with reference to drawings. For convenience of explanation, the vertical direction of the hand-pushing member shown in the following embodiments is based on the direction in which the hand-pushing member is attached to the trolley body. Further, the front-rear direction of the transport cart is the longitudinal direction of the transport cart, and the left-right direction is the lateral direction of the transport cart. However, the transportation cart of this embodiment can run in any direction including front, back, left, and right.

<First embodiment>
FIG. 1 is a diagram showing an example of the configuration of the transport cart 1 and the hand-pushing member 40. As shown in FIG.
The transportation truck 1 includes a truck main body 20, a running section 30, and a hand push member 40.
The trolley main body 20 is constructed by connecting a plurality of frame parts, etc., and loads objects to be transported. The trolley main body 20 has a rectangular shape with a longitudinal direction extending in the front-rear direction and a lateral direction extending in the left-right direction in plan view. The trolley body 20 includes 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, etc. .

For the front frame part 21a, the rear frame part 21b, the right frame part 21c, and the left frame part 21d, for example, an angular hollow pipe made of aluminum alloy can be used. Further, the corner member 22 is made of an aluminum alloy formed by extrusion molding, for example. The corner member 22 has an insertion hole 23 that opens upward, and a support portion 24 (see FIG. 3) that supports the lower end of the hand-push member 40 inserted into the insertion hole 23.

The front frame part 21a, the rear frame part 21b, the right frame part 21c, and the left frame part 21d are connected at four corners by the corner members 22, thereby forming a rectangular four-sided frame frame. Inside the frame, a plurality of reinforcing frame portions 25 are butted against each other in the front, rear, left and right directions and are joined by bolts, rivets, welding, etc., thereby forming a lattice-like structure. For the reinforcing frame portion 25, an angular hollow pipe made of aluminum alloy, a plate with an uneven cross section, or the like can be used, for example.
The loading plate 26 is a flat plate on which objects to be transported are loaded. The mounting plate 26 is coupled to each frame portion and each reinforcing frame portion 25 via bolts, rivets, or the like.

The traveling section 30 travels on the traveling surface while supporting the load of the truck main body 20 and the objects to be transported. The traveling section 30 has a plurality of casters 31. In the present embodiment, the traveling section 30 has six casters: four casters 31 disposed at the four corners of the trolley main body section 20 and two casters 31 disposed at the center in the front-rear direction and spaced apart from each other in the left and right directions. has. The casters 31 are each attached to the truck body 20 via attachment plates.

The hand-pushing member 40 is a member for a user to grasp with his or her hand when moving the transport trolley 1. The user moves the transport trolley 1 by grasping the hand pushing member 40 and pushing or pulling it. The hand pushing member 40 has an elongated shape with a length of about 1000 mm. The hand pushing member 40 is removable from the trolley body 20. Specifically, the hand push member 40 is attached to the trolley body 20 by inserting its lower end into the insertion hole 23 of the corner member 22 from above, and removed from the insertion hole 23 by pulling it upward from the attached state. Ru. Further, the transportation cart 1 has four push members 40, which are inserted into the insertion holes 23 of each corner member 22. All four hand-push members 40 have the same configuration. However, the present invention is not limited to the case where four hand press members 40 are mounted, and one, two or three hand push members 40 may be mounted. Note that the configuration in which the hand pushing member 40 is attached to and detached from the trolley main body 20 is not limited.

FIG. 2 is a perspective view showing an example in which a part of the hand-pushing member 40 is disassembled. 3(a) is a side view of the hand-pushing member 40, and FIG. 3(b) is a plan view of the hand-pushing member 40.
The hand-pushing member 40 includes a main body member 41 as a main body, a guard member 43, a reinforcing member 50, and a protection member 60.
The main body member 41 is a linear member extending in the vertical direction. Specifically, the main body member 41 is a rod-shaped member or an elongated hollow pipe-shaped member. Since the main body member 41 is hollow, it has an opening 42 that opens along the longitudinal direction. The main body member 41 is made of, for example, an aluminum alloy and is formed by extrusion molding. The main body member 41 has a metallic color such as silver, and is colored by alumite treatment, plating treatment, or the like. Further, the main body member 41 is a circular tube having an outer diameter of, for example, 42 to 45 mm (here, 44 mm), which is smaller in diameter than a so-called single tube (single pipe), so that it can be easily grasped by a user. Note that the single tube refers to a general structural carbon steel tube specified in JIS G 3444, and is a circular tube with an outer diameter of 48.6 mm.
However, the main body member 41 is not limited to the above-mentioned dimensions, and various rod-shaped or tubular members, the above-mentioned single tube, etc. can be applied.

The guard member 43 protects the user's hand from coming into contact with surrounding objects when the user grasps the hand push member 40. Moreover, the guard member 43 serves as an index indicating the maximum loading height when loading objects. The guard member 43 is fixed to the upper side of the main body member 41 at a predetermined distance from the upper end with bolts, rivets, or the like. The guard member 43 is preferably fixed at a position 100 to 200 mm away from the upper end of the main body member 41, and more preferably 120 to 180 mm away. The part of the hand-pushing member 40 above the guard member 43 functions as a grip part for the user to hold his/her hand.

As shown in FIG. 3(a), the guard member 43 has a guard portion 44 and a mounting portion 45, which are integrally formed. Furthermore, the guard member 43 has a mounting hole that opens upward and downward in order to insert the main body member 41 therein. The guard member 43 is made of a resin material such as nylon, and is integrally formed by injection molding. The guard member 43 is, for example, a different color from the main body member 41, and is colored by mixing a coloring agent into a resin material. Note that the guard member 43 may have the same color as the main body member 41.

The guard portion 44 has a disc shape that protrudes outward from the outer peripheral surface of the main body member 41 and has a larger outer diameter than the main body member 41. The outer diameter of the guard portion 44 is set to a dimension that prevents the hand of the user who is gripping the main body member 41 from overlapping and protruding from the guard portion 44 when viewed from above (fits within the outer contour line when viewed from above). . Specifically, the outer diameter of the guard portion 44 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 attachment part 45 has a cylindrical shape extending downward from the lower end of the guard part 44 and has an outer diameter larger than the main body member 41 and smaller than the guard part 44.
When attaching the guard member 43 to the main body member 41, insert the main body member 41 into the mounting hole of the guard member 43, and attach the mounting part 45 to the main body member 41 with bolts, rivets, etc. at a predetermined position from the upper end of the main body member 41. Fixed to. However, the hand push member 40 does not need to have the guard member 43.

The reinforcing member 50 is fixed to the lower end of the main body member 41, specifically at a position close to the lower end, with bolts, rivets, or the like. The reinforcing member 50 reinforces the strength of the main body member 41 and suppresses rattling between the main body member 41 and the insertion hole 23 when the main body member 41 is inserted into the insertion hole 23 of the corner member 22. The reinforcing member 50 is made of, for example, an aluminum alloy and is formed by extrusion molding. The reinforcing member 50 has a metallic color such as silver, and is colored by alumite treatment, plating treatment, or the like. However, the hand push member 40 does not need to have the reinforcing member 50.

4(a) is a cross-sectional view taken along the line AA shown in FIG. 3(a), and FIG. 4(b) is a view showing the insertion hole 23 of the corner member 22.
As shown in FIG. 4(a), the reinforcing member 50 is cylindrical and has an outer diameter larger than the outer diameter of the main body member 41. As shown in FIG. The reinforcing member 50 has a plurality of (two in this case) bulging portions 51 in which a portion of the outer circumferential surface bulges in the radial direction. The length (vertical dimension) of the reinforcing member 50 is set to be approximately the same as the depth of the insertion hole 23 of the corner member 22. Further, the reinforcing member 50 has a mounting hole 53 that opens upward and downward in order to insert the main body member 41 therein.
When attaching the reinforcing member 50 to the main body member 41, the main body member 41 is inserted into the mounting hole 53 of the reinforcing member 50, and the reinforcing member 50 is attached to the main body member with bolts, rivets, etc. at a predetermined position from the lower end of the main body member 41. Fixed at 41.

On the other hand, as shown in FIG. 4(b), the insertion hole 23 into which the reinforcing member 50 is inserted has a space 54 as a recess into which the bulge 51 of the reinforcing member 50 is inserted. Therefore, by aligning the bulging portion 51 with the space 54 and inserting the reinforcing member 50 fixed to the main body member 41 into the insertion hole 23, the hand push member 40 is positioned at a predetermined position.
Note that if the hand pusher member 40 does not have the reinforcing member 50, the lower end of the main body member 41 is directly inserted into the insertion hole 23, although positioning is not possible.

The protection member 60 is a member that protects the upper end of the main body member 41. The protection member 60 covers the upper end of the main body member 41. The protection member 60 is made of a resin material such as nylon, and is integrally formed by injection molding. The protective member 60 has a different color from the main body member 41, for example, and is colored by mixing a coloring agent into a resin material. Here, the protective member 60 is colored with one of the three primary colors of red, green, and yellow, or colored with one of blue, white, orange, gray, pink, and black.

FIG. 5 is a diagram showing an example of the configuration of the protection member 60 of the first embodiment.
5(a) is a plan view, a side view, and a bottom view of the protection member 60, and FIG. 5(b) is a sectional view taken along the line II. In addition, in FIG. 5(b), the main body member 41 is shown by a two-dot chain line.
The protection member 60 has an end portion 61, a cylindrical portion 63, and an insertion portion 66.

The end portion 61 has a substantially plate shape and is located at the upper end of the protection member 60. When the protection member 60 is attached to the main body member 41, the end portion 61 protects the end portion of the main body member 41 by covering the upper end of the main body member 41 from above. The end portion 61 is approximately circular in plan view. The end portion 61 has a substantially flat upper surface and has a curved chamfered portion 62 on the outer peripheral edge. However, the specific dimensions and shape of the end portion 61 are not particularly limited.

The cylindrical portion 63 is integrally formed with the end portion 61. The cylindrical portion 63 has a substantially cylindrical shape. When the protection member 60 is attached to the main body member 41, the cylindrical portion 63 covers the outer peripheral surface of the main body member 41 from the outside. An annular groove 65 is formed between an inner circumferential surface 64 of the cylindrical portion 63 and an outer circumferential surface 68 of an insertion portion 66, which will be described later, when viewed from the bottom. The groove portion 65 functions as an attachment hole when the protection member 60 is attached to the main body member 41. In a state where the protection member 60 is attached to the main body member 41, the inner circumferential surface 64 of the cylindrical portion 63 faces the outer circumferential surface of the main body member 41. The cylindrical portion 63 has a substantially circular outer shape when viewed from above or from the bottom. The outer diameter of the cylindrical portion 63 is preferably larger than the outer diameter of the main body member 41 and smaller than the outer diameter of the guard portion 44 . Further, the combined length of the end portion 61 and the cylindrical portion 63 (vertical dimension) is preferably in the range of 10 mm to 40 mm. By making it 10 mm or more, it is possible to suppress the protection member 60 from being unintentionally removed from the main body member 41, and by making it 40 mm or less, it is possible to suppress excessive enlargement of the protection member 60. However, the specific dimensions and shape of the cylindrical portion 63 are not particularly limited.

The insertion portion 66 is integrally formed with the end portion 61. The insertion portion 66 has a substantially cylindrical shape. Specifically, the insertion portion 66 has a substantially cylindrical shape with an upper portion closed by the end portion 61 and a lower portion open. That is, a recess 67 that opens downward is formed in the lower part of the insertion portion 66. In the state where the protection member 60 is attached to the main body member 41, the insertion portion 66 is inserted into the opening 42 of the main body member 41. That is, when the protection member 60 is attached to the main body member 41, the outer circumferential surface 68 of the insertion portion 66 faces the inner circumferential surface of the opening 42 of the main body member 41. Note that the outer circumferential surface 68 on the lower end side of the insertion portion 66 is formed with a tapered portion 69 that becomes closer to the center line C as it goes downward, so that the insertion portion 66 can be easily inserted into the opening 42 of the main body member 41. be able to. The insertion portion 66 has a substantially circular outer diameter when viewed from the bottom. Further, the outer diameter of the insertion portion 66 is approximately the same as the inner diameter of the opening 42 of the main body member 41. However, the specific dimensions and shape of the insertion portion 66 are not particularly limited.

Note that the vertical thickness Ta from the top surface of the end portion 61 to the top end of the groove portion 65 is approximately the same as the vertical thickness Tb from the top surface of the end portion 61 to the top end of the recess 67 of the insertion portion 66 (Fig. 5(b)). However, in order to protect the outer peripheral edge side of the end portion 61 from the impact applied to the upper end of the main body member 41, the thickness Ta may be greater than the thickness Tb.
Further, the horizontal thickness Tc of the cylindrical portion 63 (dimension between the outer circumferential surface of the cylindrical portion 63 and the inner circumferential surface 64 of the cylindrical portion 63) and the horizontal thickness Td of the insertion portion 66 (the outer circumference of the insertion portion 66). The dimensions between the surface 68 and the inner peripheral surface of the recess 67 are substantially the same (see FIG. 5(a)). However, in order to protect the cylindrical portion 63 from the impact applied to the upper end of the main body member 41, the thickness Tc may be greater than the thickness Td.
Further, in the vertical direction of the hand-pushing member 40, the position of the lower end of the cylinder portion 63 and the position of the lower end of the insertion portion 66 substantially match. However, in order to further protect the outer circumferential surface of the main body member 41, the lower end of the cylindrical portion 63 may be lower than the lower end of the insertion portion 66.

When attaching the protection member 60 to the main body member 41, the upper end of the main body member 41 is inserted into the cylindrical portion 63 (groove 65) of the protection member 60, and the protection member 60 is inserted into the opening 42 of the main body member 41. It is attached by inserting the section 66. When the protection member 60 is attached to the main body member 41, the upper end of the main body member 41 is covered by the end portion 61 of the protection member 60, so that the hand push member 40 can be protected.
Note that when the protection member 60 is attached to the main body member 41, the outer circumferential surface 68 of the insertion portion 66 and the inner circumferential surface of the opening 42 of the main body member 41 are in contact with each other, and the outer circumferential surface of the main body member 41 and the cylinder are in contact with each other. The inner circumferential surface 64 of the portion 63 is in contact with the inner circumferential surface 64 of the portion 63 . Therefore, since the contacting portion between the protection member 60 and the main body member 41 can be more secured, it is possible to suppress the protection member 60 from being unintentionally removed from the main body member 41.

Here, a state in which the protection member 60 is attached to the main body member 41 will be described with reference to FIG. 3. As shown in FIG. 3A, when the protection member 60 is attached to the main body member 41, the protection member 60 is located at the upper end of the hand push member 40. Since the protection member 60 is located apart from the guard portion 44, a grip portion can be formed between the guard member 43 and the protection member 60. By securing the grip portion in this way, the user can grip the grip portion and can be prevented from gripping the protection member 60.

Further, as shown in FIG. 3(b), when the outer diameter of the protection member 60 is D1 and the outer diameter of the guard portion 44 is D2, the relationship is D1<D2. That is, in plan view, the protection member 60 is located inside the outer circumferential surface of the guard portion 44. Therefore, even if the user moves the transport cart 1 by grasping the protection member 60 with his or her hand, the guard portion 44 will come into contact with an object such as a wall before the hand does, so the user will not be able to grasp the protection member 60. The user's hand is prevented or suppressed from coming into contact with the object. Note that FIG. 3(b) shows a state in which the hand push member 40 is inserted into the insertion hole 23, and a portion of the guard portion 44 overlaps with the trolley body portion 20 (see the two-dot chain line).

(Modification 1-1)
FIG. 6 is a diagram showing an example of the configuration of the protection member 70, which is Modification 1-1 of the first embodiment. In addition, in this modification, points different from the first embodiment will be mainly explained, and similar configurations will be given the same reference numerals and explanations will be omitted as appropriate.
6(a) is a plan view, a side view, and a bottom view of the protection member 70, and FIG. 6(b) is a sectional view taken along the line II-II. In addition, in FIG. 6(b), the main body member 41 is shown by a two-dot chain line.

The protection member 70 has an end portion 71, a cylindrical portion 73, and an insertion portion 66. The protection member 70 of this modification differs from the first embodiment in the shapes of the end portion 71 and the cylindrical portion 73.

The end portion 71 has a substantially polygonal shape, specifically, a substantially regular octagonal shape in plan view. However, the end portion 71 may have a polygonal shape such as a substantially pentagonal shape, a substantially hexagonal shape, a substantially heptagonal shape, or the like, and the apex may be chamfered.
The cylindrical portion 73 has a substantially polygonal outer shape, specifically, a substantially regular octagonal shape in plan view or bottom view. However, the cylindrical portion 73 may have a polygonal shape such as a substantially pentagonal shape, a substantially hexagonal shape, a substantially heptagonal shape, or the like, and may be chamfered at the apex.

Note that the horizontal thickness Tc of the cylindrical portion 73 (the dimension between the outer circumferential surface of the cylindrical portion 73 and the inner circumferential surface 64 of the cylindrical portion 73) is not constant and varies depending on the position of the outer circumferential surface of the cylindrical portion 73. . Here, the smallest thickness among the horizontal thicknesses Tc of the cylindrical portion 73 and the horizontal thickness Td of the insertion portion 66 (dimension between the outer peripheral surface 68 of the insertion portion 66 and the inner peripheral surface of the recessed portion 67) are substantially the same (see FIG. 6(a)).
Further, when the outer diameter of the protection member 70 (the diameter of the circle passing through each vertex of the octagon) is D1, and the outer diameter of the guard portion 44 is D2, the relationship D1<D2 holds.

(Modification 1-2)
FIG. 7 is a diagram showing an example of the configuration of the protection member 80, which is a modification 1-2 of the first embodiment. In addition, in this modification, points different from the first embodiment will be mainly explained, and similar configurations will be given the same reference numerals and explanations will be omitted as appropriate.
7(a) is a plan view, a side view, and a bottom view of the protection member 80, and FIG. 7(b) is a sectional view taken along the line III-III. In addition, in FIG. 7(b), the main body member 41 is shown by a two-dot chain line.

The protection member 80 has an end portion 81, a cylindrical portion 83, and an insertion portion 66. The protection member 80 of this modification differs from the first embodiment in the shapes of the end portion 81 and the cylindrical portion 83.

The end portion 81 is approximately quadrangular in plan view, more specifically, approximately square with chamfered apexes. However, the end portion 81 may have another square shape.
The cylindrical portion 83 has an approximately rectangular outer shape when viewed from above or from the bottom, and more specifically, an approximately square shape with a chamfered apex. However, the cylindrical portion 83 may have another rectangular shape.

Note that the horizontal thickness Tc of the cylindrical portion 83 (the dimension between the outer circumferential surface of the cylindrical portion 83 and the inner circumferential surface 64 of the cylindrical portion 83) is not constant and varies depending on the position of the outer circumferential surface of the cylindrical portion 83. . Here, the smallest thickness among the horizontal thicknesses Tc of the cylindrical portion 83 and the horizontal thickness Td of the insertion portion 66 (dimension between the outer circumferential surface 68 of the insertion portion 66 and the inner circumferential surface of the recessed portion 67) are substantially the same (see FIG. 7(a)).
Further, when the outer diameter of the protection member 80 (the diameter of a circle passing through each vertex of the quadrangle) is D1, and the outer diameter of the guard portion 44 is D2, the relationship D1<D2 holds.

(Modification 1-3)
FIG. 8 is a diagram showing an example of the configuration of a protection member 90, which is a modification 1-3 of the first embodiment. In addition, in this modification, points different from the first embodiment will be mainly explained, and similar configurations will be given the same reference numerals and explanations will be omitted as appropriate.
8(a) is a plan view, a side view, and a bottom view of the protection member 90, and FIG. 8(b) is a sectional view taken along the line IV-IV. In addition, in FIG. 8(b), the main body member 41 is shown by a two-dot chain line.

The protection member 90 has an end portion 91, a cylindrical portion 93, and an insertion portion 66. The protection member 90 of this modification differs from the first embodiment in the shapes of the end portion 91 and the cylindrical portion 93.

The end portion 91 is approximately triangular in plan view, more specifically, an approximately equilateral triangle whose apex is chamfered. However, the end portion 91 may have another triangular shape.
The cylindrical portion 93 has a substantially triangular outer shape when viewed from above or from the bottom, specifically, a substantially regular triangle with a chamfered apex. However, the cylindrical portion 93 may have another triangular shape.

Note that the horizontal thickness Tc of the cylindrical portion 93 (the dimension between the outer circumferential surface of the cylindrical portion 93 and the inner circumferential surface 64 of the cylindrical portion 93) is not constant and varies depending on the position of the outer circumferential surface of the cylindrical portion 93. . Here, the smallest thickness among the horizontal thicknesses Tc of the cylindrical portion 93 and the horizontal thickness Td of the insertion portion 66 (the dimension between the outer circumferential surface 68 of the insertion portion 66 and the inner circumferential surface of the recessed portion 67) are substantially the same (see FIG. 8(a)).
Furthermore, when the outer diameter of the protection member 90 (the diameter of a circle passing through each vertex of the triangle) is D1, and the outer diameter of the guard portion 44 is D2, the relationship D1<D2 holds.

(Modification 1-4)
FIG. 9 is a diagram showing an example of the configuration of a protection member 100, which is a modification 1-4 of the first embodiment. In addition, in this modification, points different from the first embodiment will be mainly explained, and similar configurations will be given the same reference numerals and explanations will be omitted as appropriate.
9(a) is a plan view, a side view, and a bottom view of the protection member 100, and FIG. 9(b) is a sectional view taken along the line VV. In addition, in FIG. 9(b), the main body member 41 is shown by a two-dot chain line.

The protection member 100 has an end portion 61, a cylindrical portion 103, and an insertion portion 106. The protection member 100 of this modification differs from the first embodiment in the shapes of the cylindrical portion 103 and the insertion portion 106.

The cylindrical portion 103 has a tapered portion 104 formed at the lower end of the outer circumferential surface, the tapered portion 104 becoming closer to the center line C as it goes downward. By forming the tapered part 104 in this manner, it is possible to prevent the lower end of the cylindrical part 103 from getting caught on other articles, and it is possible to prevent the protection member 100 from being unintentionally removed from the main body member 41. . However, the cylindrical portion 103 may have a tapered portion formed at the lower end of the inner circumferential surface 64 and further away from the center line C as it goes downward. In addition, the cylindrical portion 103 has both a tapered portion that approaches the center line C as it goes downward toward the lower end of the outer circumferential surface and a tapered portion that moves away from the center line C as it goes downward toward the lower end of the inner peripheral surface 64. may be formed. However, the specific dimensions and shape of the cylindrical portion 103 are not particularly limited.

The insertion portion 106 has a plurality of (here, four) convex portions 108 on the outer circumferential surface 68 that protrude outward from the outer circumferential surface 68 . The convex portion 108 has a shape that tapers outward as viewed from the bottom. The plurality of convex portions 108 are arranged at intervals from each other. When the protection member 100 is attached to the main body member 41, the protrusion 108 is in contact with the inner peripheral surface of the opening 42. Note that when inserting the insertion portion 106 into the opening 42 of the main body member 41, by inserting it while deforming the protrusion 108, the inner circumferential surface of the opening 42 of the main body member 41 and the protrusion 108 are can be brought into pressure contact with each other, and unintentional removal of the protection member 100 from the main body member 41 can be further suppressed.

Further, the position of the lower end of the insertion portion 106 is lower than the position of the lower end of the cylindrical portion 103. Therefore, since the contact portion between the insertion portion 106 and the main body member 41 can be more secured, it is possible to suppress the protection member 100 from being unintentionally removed from the main body member 41.

(Modification 1-5)
FIG. 10 is a diagram illustrating an example of the configuration of a protection member 110 that is a modification 1-5 of the first embodiment. In addition, in this modification, points different from the first embodiment will be mainly explained, and similar configurations will be given the same reference numerals and explanations will be omitted as appropriate.
10(a) is a plan view, a side view, and a bottom view of the protection member 110, and FIG. 10(b) is a sectional view taken along the line VI-VI. In addition, in FIG. 10(b), the main body member 41 is shown by a two-dot chain line.

The protection member 110 has an end portion 111, a cylindrical portion 63, and an insertion portion 66. The protection member 110 of this modification differs from the first embodiment in the shape of the end portion 111.

A through hole 112 is formed in the center of the end portion 111 and extends through the end portion 111 in the vertical direction. The through hole 112 is approximately circular in plan view. The inner diameter of the through hole 112 is smaller than the inner diameter of the recess 67 of the insertion portion 66. By forming the through hole 112 in the end portion 111, the user can, for example, hang and store personal items in the through hole 112, and the manufacturing cost of the protective member 110 can be reduced. Note that the through hole 112 of the end portion 111 may have another shape such as a polygon in plan view.

<Second embodiment>
FIG. 11 is a diagram showing an example of the configuration of the protection member 120 of the second embodiment. In addition, in this embodiment, the points different from the first embodiment will be mainly explained, and the same components will be given the same reference numerals and the explanation will be omitted as appropriate.
11(a) is a plan view, a side view, and a bottom view of the protection member 120, and FIG. 11(b) is a sectional view taken along the line VII-VII. In addition, in FIG. 11(b), the main body member 41 is shown by a two-dot chain line.
The protection member 120 has an end portion 121 and an insertion portion 66. The protection member 120 of this embodiment does not have a cylindrical portion, and the shape of the end portion 121 is different from that of the first embodiment.

The end portion 121 has a substantially plate shape and is located at the upper end of the protection member 120. When the protection member 120 is attached to the main body member 41, the end portion 121 protects the main body member 41 by covering the upper end of the main body member 41 from above. The end portion 121 is approximately circular in plan view. The end portion 121 has a substantially flat upper surface and has a substantially semicircular chamfered portion 122 on the outer peripheral edge. However, the specific dimensions and shape of the end portion 121 are not particularly limited.

Further, when the outer diameter of the end portion 121 is D1 and the outer diameter of the guard portion 44 is D2, the relationship D1<D2 holds. Furthermore, when the outer diameter of the main body member 41 (the outer diameter of the grip portion) is D3, the relationship D1>D3 holds.

When attaching the protection member 120 to the main body member 41, the insertion portion 66 of the protection member 120 is inserted into the opening 42 of the main body member 41. When the protection member 120 is attached to the main body member 41, the upper end of the main body member 41 is covered by the end portion 121 of the protection member 120, so that the hand push member 40 can be protected. Moreover, since the protective member 120 does not have a cylindrical portion, the manufacturing cost of the protective member 120 can be reduced.

(Modification 2-1)
FIG. 12 is a diagram illustrating an example of the configuration of the protection member 130, which is Modification 2-1 of the second embodiment. In addition, in this modified example, points different from the second embodiment will be mainly explained, and similar configurations will be given the same reference numerals and explanations will be omitted as appropriate.
12(a) is a plan view, a side view, and a bottom view of the protection member 130, and FIG. 12(b) is a sectional view taken along the line VIII-VIII. In addition, in FIG. 12(b), the main body member 41 is shown by a two-dot chain line.

The protection member 130 has an end portion 131 and an insertion portion 66. The protection member 130 of this modification differs from the second embodiment in the shape of the end portion 131.

The end portion 131 has a substantially polygonal shape, specifically, a substantially regular octagonal shape in plan view. However, the end portion 131 may be a substantially triangular shape such as a substantially regular triangle, a substantially quadrangle such as a substantially square, a substantially pentagon such as a substantially regular pentagon, a substantially hexagon such as a regular hexagon, or a substantially heptagon such as a regular heptagon. , the apex may be chamfered.
Note that when the outer diameter of the end portion 131 (the diameter of a circle passing through each vertex of the octagon) is D1 and the outer diameter of the guard portion 44 is D2, the relationship D1<D2 holds.

(Modification 2-2)
FIG. 13 is a diagram illustrating an example of the configuration of a protection member 140, which is a modification 2-2 of the second embodiment. In addition, in this modified example, points different from the second embodiment will be mainly explained, and similar configurations will be given the same reference numerals and explanations will be omitted as appropriate.
13(a) is a plan view, a side view, and a bottom view of the protection member 140, and FIG. 14(b) is a sectional view taken along the line IX-IX. In addition, in FIG. 13(b), the main body member 41 is shown by a two-dot chain line.

The protection member 140 has an end portion 141 and an insertion portion 66. The protection member 140 of this modification differs from the second embodiment in the shape of the end portion 141.

The end portion 141 has a through hole 142 formed in the center thereof that passes through the end portion 141 in the vertical direction. The through hole 142 is approximately circular in plan view. The inner diameter of the through hole 142 is smaller than the inner diameter of the recess 67 of the insertion portion 66. By forming the through hole 142 in the end portion 141, the user can, for example, hang and store personal items in the through hole 142, and the manufacturing cost of the protective member 140 can be reduced. Note that the through hole 142 of the end portion 141 may have another shape such as a polygon in plan view.

(Modification 2-3)
FIG. 14 is a diagram showing an example of the configuration of a protection member 150, which is a modification 2-3 of the second embodiment. In addition, in this modified example, points different from the second embodiment will be mainly explained, and similar configurations will be given the same reference numerals and explanations will be omitted as appropriate.
14(a) is a plan view, a side view, and a bottom view of the protection member 150, and FIG. 14(b) is a sectional view taken along the line XX. In addition, in FIG. 14(b), the main body member 41 is shown by a two-dot chain line.

The protection member 150 has an end portion 151 and an insertion portion 66. The protection member 150 of this modification differs from the second embodiment in the shape of the end portion 151.

The end portion 151 has a substantially plate shape and is located at the upper end of the protection member 150. When the protection member 150 is attached to the main body member 41, the end portion 151 protects the main body member 41 by covering the upper end of the main body member 41 from above. The end portion 151 is approximately circular in plan view. The end portion 151 has a substantially flat upper surface and has a substantially planar chamfered portion 152 on the outer periphery. Further, if the outer diameter of the end portion 151 is D1 and the outer diameter of the main body member 41 (outer diameter of the grip portion) is D3, D1 and D3 have substantially the same relationship. By making the outer diameter of the end portion 151 substantially the same as the outer diameter of the main body member 41, the manufacturing cost of the protection member 150 can be reduced.

<Third embodiment>
FIG. 15 is a diagram showing an example of the configuration of the hand-pushing member 240 of the third embodiment. In addition, in this embodiment, the points different from the first embodiment will be mainly explained, and the same components will be given the same reference numerals and the explanation will be omitted as appropriate.
The main body member 241 is a linear member extending in the vertical direction. Specifically, the main body member 241 is a rod-shaped member or an elongated hollow pipe-shaped member. Since the main body member 241 is hollow, it has an opening 42 that opens along the longitudinal direction. The main body member 241 of this embodiment has a cross-shaped reinforcing portion 242 inside thereof that extends radially from the center in a plan view in order to improve strength. The reinforcing portion 242 is formed along the longitudinal direction of the main body member 241. Therefore, the opening 42 of the main body member 241 is divided into a plurality of spaces (four in this case) by the reinforcing part 242. However, the shape of the reinforcing portion 242 is not limited.

The protection member 160 is a member that protects the upper end of the main body member 241.
FIG. 16 is a diagram showing an example of the configuration of a protection member 160 according to the third embodiment. In addition, in this embodiment, the points different from the first embodiment will be mainly explained, and the same components will be given the same reference numerals and the explanation will be omitted as appropriate.
16(a) is a plan view, a side view, and a bottom view of the protection member 160, and FIG. 16(b) is a sectional view taken along the line XI-XI. In addition, in FIG. 16(b), the main body member 241 is shown by a two-dot chain line.

The protection member 160 has an end portion 61, a cylindrical portion 63, and an insertion portion 166. The protection member 160 of this embodiment is different from the first embodiment in the shape of the insertion portion 166.
The insertion portion 166 has a shape in which the insertion portion 66 of the first embodiment is divided (divided) along the cross of the reinforcing portion 242 of the main body member 241 when viewed from the bottom. Specifically, the insertion portion 166 has a plurality of (here, four) insertion pieces 167a to 167d that are inserted into the plurality of spaces of the opening 42 of the main body member 241, respectively. Therefore, when inserting the insertion portion 166 of the protection member 160 into the opening 42 of the main body member 241, each of the insertion pieces 167a to 167d can fit into the space divided by the reinforcement portion 242 without being interfered with by the reinforcement portion 242. inserted. However, the shape of the insertion portion 166 is not limited.

Furthermore, the lower end of the insertion portion 166 is lower than the lower end of the cylindrical portion 63 . Therefore, since the contact portion between the insertion portion 166 and the main body member 241 can be more secure, it is possible to suppress the protection member 160 from being unintentionally removed from the main body member 241.

As above, the present invention has been explained using the above-mentioned embodiment and each modification example, but the present invention is not limited only to the above-mentioned embodiment and each modification example, and changes etc. can be made within the scope of the present invention. A part of the configuration of each embodiment or each modification may be combined with other embodiments or other modifications as appropriate.

In each of the embodiments and modifications described above, the protection member may be manually removable from the main body member by the user, or may be configured such that the protection member cannot be manually removed by the user. Here, the term "not manually removable by the user" means that the protective member is fixed to the main body member 41 with bolts, rivets, adhesives, etc., and cannot be removed by the user without using a tool such as a screwdriver. Furthermore, if the protective member is damaged even when removed manually, it is not considered removable.

In each embodiment and each modification mentioned above, a protection member does not need to have an insertion part or a cylinder part.
In each of the embodiments and modifications described above, the protection member may be fixed to the main body member using bolts, rivets, adhesives, or the like.

1: Transport cart 20: Cart body part 23: Insertion hole 30: Traveling part 40, 240: Hand push member 41, 241: Main body member 42: Opening part 43: Protective member 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160: Protective member 61, 71, 81, 91, 111, 121, 131, 141, 151: End portion 63, 73, 83, 93, 103: Cylindrical portion 66, 106: Insertion portion

Claims (8)

A hand-held member that is attached by being inserted from above into an insertion hole provided in the main body of a transport vehicle, and detached from the insertion hole by pulling upward, and is grasped by hand when the transport vehicle is traveling. hand,
A rod-shaped main body member along the vertical direction,
A hand-held member comprising: a protective member that covers an upper end of the main body member. The main body member has an opening that opens along the longitudinal direction,
The hand-held member according to claim 1, wherein the protection member has an insertion portion inserted into the opening. 3. The hand-held member according to claim 2, wherein the insertion portion has a convex portion on an outer circumferential surface that protrudes outward from the outer circumferential surface and contacts the inner circumferential surface of the opening. 4. The hand-push member according to claim 3, wherein the insertion portion has a plurality of convex portions arranged at intervals from each other. The hand-held member according to claim 1, wherein the protection member has a cylindrical portion that covers the outer peripheral surface of the main body member from the outside. The main body member has an opening that opens along the longitudinal direction,
The protection member has an insertion portion inserted into the opening,
6. The hand-held member according to claim 5, wherein an outer circumferential surface of the insertion portion faces an inner circumferential surface of the opening, and an inner circumferential surface of the cylindrical portion faces an outer circumferential surface of the main body member. The hand-push member according to claim 6, wherein a lower end of the insertion portion is lower than a lower end of the cylindrical portion. It is attached by being inserted from above into an insertion hole provided in the main body of a transport vehicle, and is removed from the insertion hole by pulling upward, and is used as a hand-held member that is grasped by hand when running the transport vehicle. A protective member that is
A protection member characterized in that it covers an upper end of the main body member by being attached to a vertically extending rod-shaped main body member constituting the hand push member.

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