JP2023062842A - Hand guard for hand cart - Google Patents

Abstract

To provide a novel hand guard for a hand cart that does not impair handle operability even in a case of a hand cart having a narrow handle width.SOLUTION: A hand guard for a hand cart includes a pair of fitting bodies 111, 112 fitted to corner portions 224, 224 of a handle 220 including a downward U-shape pipe body 221 so as to sandwich the corner portions 224, 224 from inside and outside, and further includes a guard plate 120 in the fitting body 111 located in the outside. As a result, the hand guard can be easily fitted to the curved corner portions of the handle 220 and even in a case of a hand cart having a narrow handle width, the width can be effectively utilized, so that handle operability is not impaired.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to a hand guard that is attached to the handle of a hand truck to protect both hands.

A push-type trolley used for transporting heavy or large objects generally has a structure in which a push handle is provided on a trolley body equipped with casters. This handle is made by processing a metal pipe into a U-shape, and both ends of the handle are erected so as to be fixed to the main body of the truck. It is designed to move in any direction by pressing. Also, there are some that have a foldable base portion of the handle.

Such a conventional hand-pulled cart is operated by the worker holding the horizontal portion of the upper end of the handle with both hands as described above, but the operator can operate the handle while the hand is moved to the corner of the handle. As a result, as shown in FIG. 13, the hand may hit an obstacle such as a pillar or the corner of a door during transportation, resulting in injury. Therefore, the inventors of the present invention attach guard-like guards, called hand guards, to both ends of the horizontal portion of the handle, as shown in Patent Document 1 below, to prevent the hands from inadvertently moving to the corners of the handle. ing.

Japanese Patent Application Laid-Open No. 2020-104705

By the way, many conventional push carts have curved (curved) corners on both sides of the handle. I am trying to avoid the part and attach it to both ends of the horizontal part of the handle. Therefore, in the case of a narrow handle such as a small cart, the width of the horizontal part is also narrow, so the distance between protective gears is also shortened, making it difficult to operate the handle finely with both hands, resulting in reduced operability. I can put it away.

Accordingly, the present invention has been devised to solve these problems, and its object is to provide a novel pushcart that does not impair the handle operability even if the pushcart has a narrow handle width. To provide a hand guard.

In order to solve the above-mentioned problems, the first invention is a hand guard to be attached to a hand truck provided with a handle consisting of a downward U-shaped pipe body with both corners curved, wherein the pipe body is attached to the corners of the handle. A hand guard for a handcart, characterized by having a pair of attachment bodies that are attached so as to be sandwiched from the inside and outside, and having a guard plate on the attachment body located on the outer side of the pair of attachment bodies.

According to such a configuration, since it can be attached to the curved corner of the handle made of a downward U-shaped pipe body, even a handcart with a narrow handle width can effectively utilize the width of the handle, thereby improving the handle operability. without loss of

A second aspect of the invention is characterized in that the pair of mounting bodies each have an arc-shaped small diameter surface and a large diameter surface having a larger diameter than the small diameter surface on the inner peripheral surfaces in contact with the pipe body. It is a hand guard for pushcart. According to such a configuration, when the diameter of the pipe body constituting the handle of the hand truck to be attached is small, the small diameter surfaces of both the collar members come into surface contact with the surface of the pipe body. It can be attached firmly without wobbling or slipping.

On the other hand, if the diameter of the pipe body is larger than this, the large-diameter surfaces of both collar members come into surface contact with the surface of the pipe body. can be attached with In this way, one type (pair) of mounting bodies can be used for at least two different pipe diameters.

A third aspect of the present invention is a hand guard for a pushcart, characterized in that a recess is formed in the inner peripheral surface of the outer mounting body of the pair of mounting bodies. With such a configuration, the inner peripheral surface of the mounting body located on the outside can be brought into close contact with the surface of the curved pipe body, so that the mounting strength can be increased.

A fourth aspect of the present invention is a handguard for a hand truck, characterized in that a notch is formed in the edge of the inner peripheral surface of the inner mounting body of the pair of mounting bodies. According to such a configuration, since the edge of the inner peripheral surface of the mounting body located inside does not interfere with the curved pipe body, the mounting strength can be further increased.

According to the present invention, since it can be reliably attached to the curved corners of the handle made of a pipe body, there is no need to sacrifice the space of the straight portion as in the conventional art. As a result, even if the hand truck has a narrow handle width, the width can be effectively used, so that the handle operability can be improved.

1 is a perspective view showing an embodiment of a hand truck 200 to which hand guards 100, 100 according to the present invention are attached; FIG. 2 is an enlarged perspective view mainly showing a horizontal portion 223 of the handle 220 of FIG. 1; FIG. FIG. 2 is a front view showing an attached state of the handguard 100 according to the present invention; 1 is a perspective view showing the configuration of a handguard 100 according to the present invention; FIG. (A) is a plan view showing the outer mounting body 111 and the guard plate 120 integrated therewith constituting the handguard 100, and (B) is a side view thereof. FIG. 3 is a front view showing an outer attachment body 111 and a guard plate 120 integrated therewith, which constitute the handguard 100 according to the present invention; Fig. 2 is a rear view showing an outer attachment body 111 and a guard plate 120 integrated therewith, which constitute the handguard 100 according to the present invention; FIG. 4 is a plan view of an inner mounting body 112 that constitutes the handguard 100 according to the present invention; 4 is a front view of an inner mounting body 112 that constitutes the handguard 100 according to the present invention; FIG. FIG. 7 is a partially enlarged view showing part A in FIG. 6 ; (A) is an explanatory diagram showing the curvature of the small-diameter surface P1 formed on the inner peripheral surface P of the outer mounting body 111, and (B) is an illustration showing the curvature of the large-diameter surfaces P2, P2 similarly formed on the inner peripheral surface P. It is a diagram. FIG. 4 is an explanatory view showing that the inner peripheral surface P of the outer mounting body 111 is concave; FIG. 10 is an explanatory diagram showing the inconvenience caused when the corner of the carriage handle is gripped;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an embodiment of a hand truck 200 to which a hand guard 100 of the present invention is attached, and FIG. 2 is an enlarged view of the upper part of the handle 220 thereof. As shown in the figure, this push truck 200 has a structure in which a push handle 220 is provided at the end of a truck main body 210 having a plurality of casters C. As shown in FIG.

This handle 220 is formed by processing a pipe body 221 made of metal such as aluminum or iron into a downward U-shape with both corners curved, and a pair of vertically extending vertical parts 222, 222 and their upper ends are horizontally connected. and a horizontal portion 223 that Between the horizontal portion 223 and the pair of vertical portions 222, 222 are formed gently curved curved portions 224, 224, respectively.

The lower ends of the vertical portions 222, 222 are fixed to the end portion of the carriage body 210 so as to stand substantially vertically. It is designed to As shown in the figure, there is also a type in which the upper ends of the vertical portions 222, 222 are bent backward at an angle of about 30 to 45° from the vertical state.

The hand guard 100 according to the present invention is used by being attached to gently curved curved portions 224, 224 on both end sides of the handle 220, respectively, as shown in the figure. By attaching the hand guards 100, 100 according to the present invention to the curved portions 224, 224 which are the corners of the handle 220 in this manner, the operator always places his or her hand between the hand guards 100, 100. Therefore, it is possible to prevent a situation in which the hand inadvertently slides to the corner (curved portion).

In addition, since the space of the horizontal portion 223 of the handle 220 is not sacrificed in order to attach the hand guards 100, 100, the width of the horizontal portion 223 can be reduced even if the hand truck has a narrow handle width. Since the whole can be effectively used, there is no loss of steering operability. The material and size of the hand guard 100 are not particularly limited.

3 to 11 show a specific embodiment of handguard 100 according to the present invention. First, as shown in FIGS. 3 and 4, the hand guard 100 includes a pair of mounting bodies 111 and 112 mounted so as to sandwich the pipe body 221 of the curved portion 224, which is the corner of the handle 220, from the inside and outside. Of the mounting bodies 111 and 112, the outer mounting body 111 positioned on the outside and the guard plate 120 formed integrally with each other are mainly configured.

Both mounting bodies 111 and 112 have substantially the same structure, and as shown in FIGS. 3 and 4, each has a structure in which bolt holes 114 and 114 are formed on both sides of an arch-shaped body portion 113 . Then, as shown in FIG. 3, the outer mounting body 111 is positioned outside (peripheral side) of the pipe body 221 forming the curved portion 224 of the handle 220, and the inner mounting body 112 is positioned inside (inner peripheral side) thereof. With the bolt holes 114, 114 aligned, bolts 115, 115 are inserted from the inner mounting body 112 side, and nuts 116, 116 attached to the outer mounting body 111 side. They are connected by screwing them together.

Among the mounting bodies 111 and 112, the outer mounting body 111, which is located on the outer side, is further provided with a brim-shaped guard plate 120 integrally therewith, as shown in FIGS. This guard plate 120 is attached so as to be inclined by about 40 to 45° with respect to the axis of the bolt hole 114 of the outer mounting body 111 as shown in the figure, and as shown in FIG. When attached to the curved portion 224 of the handle 220 , the guard plate 120 is oriented substantially vertically so as to extend upward from the vertical portion 222 of the handle 220 . A reinforcing rib 121 is provided on one surface (outer surface) of the guard plate 120 . Further, the shape and size of the guard plate 120 are not particularly limited, and for example, a disk-shaped plate having a diameter of about 10 to 15 cm can be used.

Further, as shown in FIG. 10, the inner peripheral surfaces P of the mounting bodies 111 and 112 that are in contact with the pipe body 221 each have an arc-shaped small diameter surface P1, large diameter surfaces P2 positioned on both sides of the small diameter surface P1, P2 is formed. As shown in FIG. 11A, the small diameter surface P1 has the same curvature as the circumference of a perfect circle with a diameter of 28 mm, for example, whereas the large diameter surfaces P2 and P2 have a larger perfect circle. It has the same curvature as the circumference of a perfect circle with a diameter of 34 mm as shown in FIG. 11B, for example.

Therefore, as shown in the figure, when the pipe diameter of the handle 220 of the existing hand truck 200 is 28 mm, the entire small diameter surface P1 is in surface contact with the handle 220 so that the handle 220 can be firmly attached. On the other hand, when the pipe diameter of the handle 220 is 34 mm, the entire large diameter surfaces P2, P2 on both sides of the small diameter surface P1 can be firmly attached to the handle 220 by surface contact.

Further, as shown in FIG. 12, of the mounting bodies 111 and 112, the inner peripheral surface P of the outer mounting body 111, which is located on the outer side, is recessed inward so as to be orthogonal to the circumferential direction. When attached to the curved portion 224, it is in close contact with the outer peripheral surface thereof. Furthermore, as shown in FIGS. 8 and 9, notches 117, 117 are also formed on both edges of the inner peripheral surface P of the other inner attachment body 112, so that when attached to the curved portion 224, both edges of the inner attachment body 112 are cut out. The edge portion does not interfere with the inner peripheral surface of the curved portion 224 .

In this way, the hand guard 100 of the present invention can be reliably attached to the curved corners (curved portions 224, 224) of the handle 220 made of the downward U-shaped pipe body 221. without sacrificing H.223 space. As a result, even if the hand truck has a narrow handle width, the width can be effectively used, so that the handle operability is not impaired.

In addition, since the inner peripheral surface P of the mounting bodies 111 and 112 in contact with the pipe body 221 is composed of the arc-shaped small diameter surface P1 and the large diameter surfaces P2 and P2 having a larger diameter than this, the pipe diameter of the handle 220 is increased. Even if they are different, since the inner peripheral surface P is in surface contact with the surface of the pipe body 221, the attachment bodies 111 and 112 can be firmly attached without being displaced. In addition to improving versatility, it is possible to reduce the number of manufacturing processes and molds, so that manufacturing costs and inventory management costs can be greatly reduced.

Furthermore, by forming recesses on the inner peripheral surface of the mounting body 111 positioned on the outside and notches 117, 117 on the edges of the inner peripheral surface of the mounting body 112 positioned on the inside, the inner and outer mounting bodies Since the inner peripheral surfaces P of 111 and 112 can be brought into close contact with the surface of the curved pipe body, the mounting strength can be further increased.

100... Hand guard 111... Mounting body (outside)
112... Mounting body (inner side)
DESCRIPTION OF SYMBOLS 113... Main-body part 114... Bolt hole 115... Bolt 116... Nut 117... Notch 120... Guard board 200... Hand cart 220... Handle 221... Pipe body 222... Vertical part 223... Horizontal part 224... Curved part (corner part)
P... inner peripheral surface P1... small diameter surface P2... large diameter surface

Claims (4)

A hand guard to be attached to a trolley equipped with a handle consisting of a downward U-shaped pipe body with both corners curved,
A hand-pulled trolley characterized by comprising a pair of attachment bodies attached to the corners of the handle so as to sandwich the pipe body from inside and outside, and a guard plate being provided on the outer attachment body of the pair of attachment bodies. handguard. A handguard for a cart according to claim 1,
A hand guard for a handcart, wherein the pair of attachment bodies each have an arc-shaped small diameter surface and a large diameter surface larger in diameter than the small diameter surface on the inner peripheral surface in contact with the pipe body. . 3. A handguard according to claim 1 or 2,
A hand guard for a hand truck, characterized in that a recess is formed in the inner peripheral surface of one of the pair of mounting bodies located on the outer side. The handguard according to any one of claims 1 to 3,
A handguard for a hand truck, characterized in that a notch is formed in the edge of the inner peripheral surface of the mounting body positioned inside the pair of mounting bodies.

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