Protective member and hand push member

Abstract

To prevent the user's hand grasping a grip part from contacting an object.SOLUTION: A hand push member 40 removably attached to a trolley body part 20 of a transport trolley 1 has a grip part 52 grasped by a user's hand, and a protective part 54 that is located outside of the grip part 52 and protects the hand grasping the grip part 52.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a protective member and a push member. [Background technology]

[0002] Some transport carts used at construction sites and the like have a configuration in which single pipes can be inserted into the four corners of the body of the transport cart. For example, Patent Document 1 discloses a transport cart in which corner members are provided at the four corners so that single pipes can be inserted as push rods. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-159054 Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention aims to prevent the user's hand from coming into contact with an object when gripping the grip portion. [Means for solving the problem]

[0005] The present invention is a hand push member that is detachably attached to the cart body of a transport cart, and is characterized by having a grip portion that a user grasps with their hand, and a protective portion that is located outside the grip portion and protects the hand grasping the grip portion. [Effects of the Invention]

[0006] According to the present invention, the user's hand holding the grip portion can be prevented from coming into contact with an object. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view showing an example of a transport cart according to a first embodiment. [Figure 2]FIG. 2 is a plan view showing an example of a transport cart. [Figure 3] FIG. [Figure 4] FIG. 2 is a side view of the transport cart as seen from the left side. [Figure 5] FIG. 2 is a diagram illustrating an example of a push member according to the first embodiment. [Figure 6] FIG. 2 is a diagram illustrating an example of a push member according to the first embodiment. [Figure 7] 3A and 3B are diagrams illustrating an example of a protective member according to the first embodiment. [Figure 8] 10A and 10B are diagrams illustrating an example of a protective member according to a second embodiment. [Figure 9] 10A and 10B are diagrams illustrating an example of a protective member according to a third embodiment. [Figure 10] 10A and 10B are diagrams illustrating an example of a protection member according to a fourth embodiment. [Figure 11] 10A and 10B are diagrams illustrating an example of a protective member according to a fifth embodiment. [Figure 12] 13A and 13B are diagrams illustrating an example of a protection member according to a sixth embodiment. [Figure 13] FIG. 13 is a diagram showing an example of a protection member according to a seventh embodiment. [Figure 14] 13A and 13B are diagrams illustrating an example of a protective member according to an eighth embodiment. [Figure 15] FIG. 13 is a diagram showing an example of a protection member according to a ninth embodiment. [Figure 16] FIG. 23 is a diagram showing an example of a protection member according to a tenth embodiment. [Figure 17] FIG. 23 is a diagram showing an example of a protection member according to an eleventh embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] The protective member and push member according to the embodiment will be described below with reference to the drawings. For ease of explanation, the up-down direction of the protective member and push member shown in each of the following embodiments is based on the direction when the push member is attached to the cart body. The front-to-rear direction of the transport cart is the longitudinal direction of the transport cart, and the left-to-right direction is the lateral direction of the transport cart. However, the transport cart of this embodiment can travel in any direction, including front-to-rear and left-to-right.

[0009] First Embodiment Fig. 1 is a perspective view showing an example of a transporter cart 1 according to the first embodiment. Fig. 2 is a plan view showing an example of the transporter cart 1. Fig. 3 is a rear view of the transporter cart 1 as seen from the rear side. Fig. 4 is a side view of the transporter cart 1 as seen from the left side. Note that Fig. 1 shows the state before the push member 40 is attached to the cart main body 20, and Figs. 2 to 4 show the state after the push member 40 has been attached to the cart main body 20. The transport cart 1 includes a cart body 20, a running section 30, and a push member 40. The carriage body 20 is formed by connecting a plurality of frame sections and the like, and is used to carry transported goods. In a plan view, the carriage body 20 is substantially rectangular, with the longitudinal direction being the front-to-rear direction and the transverse direction being the left-to-right direction. The carriage body 20 has a front frame section 21a, a rear frame section 21b, a right frame section 21c, a left frame section 21d, corner members 22, a reinforcing frame section (reinforcing section) 25, a mounting section 26, etc.

[0010] The front frame portion 21a, the rear frame portion 21b, the right frame portion 21c, and the left frame portion 21d may be made of, for example, a rectangular hollow pipe made of an aluminum alloy. The corner member 22 is made of an aluminum alloy and formed by extrusion molding, for example. The corner member 22 has an insertion hole 23 that opens upward and a stopper portion 24 (see FIG. 5) that closes a portion of the lower portion. A push member 40 is inserted into the insertion hole 23 of the corner member 22. The lower end of the push member 40 inserted into the insertion hole 23 is supported by the stopper portion 24.

[0011] The front frame portion 21a, the rear frame portion 21b, the right frame portion 21c, and the left frame portion 21d are joined at their four corners by corner members 22 to form a substantially rectangular four-sided frame. Within the frame, a plurality of reinforcing frame portions 25 are butted together in the front-rear and left-right directions and joined by screws, rivets, welding, etc. to form a lattice pattern. The reinforcing frame portions 25 can be, for example, rectangular hollow pipes made of aluminum alloy or plates with an uneven cross section. The placing portion 26 is a flat plate on which transported goods are placed, and is joined to each frame portion and each reinforcing frame portion 25 via rivets or screws.

[0012] The running unit 30 runs on the running surface while supporting the load of the carriage body 20 and the transported object. The running unit 30 has a plurality of casters 31, 32. In this embodiment, the running unit 30 has six casters: four casters 31 located at the four corners of the carriage body 20 and two casters 31 located at the center in the front-to-rear direction and spaced apart on the left and right. Each caster 31, 32 has a wheel 33 and a fork member 34 that rotatably supports the wheel 33. Each caster 31, 32 is attached to the carriage body 20 via a mounting plate. Each caster 31, 32 can rotate around a vertical axis. Four casters 31 are braked casters, and two casters 31 are non-brake casters. Each of the four braked casters 31 has a brake pedal 35 that can swing up and down.

[0013] The push member 40 is a member that the user pushes by hand when traveling the transport cart 1. The push member 40 is elongated and approximately 1000 mm long in the vertical direction. The push member 40 is attached to the cart body 20 by inserting its lower end into the insertion hole 23 of the corner member 22, and is detachable by removing it from the insertion hole 23. The transport cart 1 of this embodiment has four push members 40 (40A to 40D), which are inserted into the insertion holes 23 of the corner members 22. Here, push member 40A is located on the right side and rear, push member 40B is located on the left side and rear, push member 40C is located on the right side and front, and push member 40D is located on the left side and front. Note that when there is no need to distinguish between the push members 40A to 40D, they will be simply referred to as push members 40. Furthermore, it is not necessary to attach all four push members 40A to 40D to the cart body 20, and only one, two, or three push members 40 may be attached to the cart body 20.

[0014] 5 and 6 are diagrams showing an example of the push member 40. FIG. The push member 40 has a main body member 41 as a main body portion and a protection member 51. The main body member 41 is a long, pipe-like member or a rod-like member extending in the vertical direction. The main body member 41 is straight and linear from the bottom end to the top end. To reduce weight, the main body member 41 is made of, for example, an aluminum alloy and formed by extrusion molding. The main body member 41 is a circular tube with an outer diameter D of, for example, 40 to 49 mm (approximately 42 mm in this example), which is an outer diameter that is easy for a user to grasp. The main body member 41 is also internally reinforced in a cross shape to improve its strength. However, the main body member 41 is not limited to the above-mentioned dimensions and shape, and various rod-like members, tubular members, and single pipes (general structural carbon steel pipes specified in JIS G 3444) can be used.

[0015] The protective member 51 protects the user's hands. The protective member 51 is detachably attached to the main body member 41 without using tools. Therefore, the user can attach or detach the protective member 51 to or from the main body member 41 as needed. However, the protective member 51 may be fixed to the main body member 41 with bolts, rivets, or the like so that the user cannot remove it without tools.

[0016] The protective member 51 of this embodiment will be described with reference to FIG. 7 shows a front view, a plan view, a bottom view, a right side view, and a left side view of the protective member 51. The rear view is omitted because it is symmetrical with the front view.

[0017] The protective member 51 has a grip portion 52 and a protective portion 54. The grip portion 52 and the protective portion 54 are integrally formed. The protective member 51 is made of a resin material such as polyethylene and is integrally formed by injection molding. However, the grip portion 52 and the protective portion 54 may be molded separately and then integrated by bonding or joining them later. Furthermore, to improve visibility, the protective member 51 is given a color different from that of the bogie main body 20, specifically, the front frame portion 21a, the rear frame portion 21b, the right frame portion 21c, and the left frame portion 21d. For example, if the front frame portion 21a, the rear frame portion 21b, the right frame portion 21c, and the left frame portion 21d are a metallic color such as silver, the protective member 51 may be given a color different from the metallic color, such as one of the three primary colors, such as red, green, and blue, or may be orange, yellow, or the like. Furthermore, the protective member 51 is given a color different from that of the main body member 41. For example, if the main body member 41 is a metallic color such as silver, the protective member 51 may be given a color different from the metallic color, such as one of the three primary colors, such as red, green, and blue, or may be orange, yellow, or the like.

[0018] The grip portion 52 is a portion that a user grasps with their hand when moving the transport cart 1. The grip portion 52 is approximately cylindrical and long in the up-down direction, with the central axis O as its approximate center. The central axis O of the grip portion 52 approximately coincides with the center line of the main body member 41 in the up-down direction. The upper surface 53a of the grip portion 52 is a flat surface that is approximately perpendicular to the central axis O. The vertical height Ho of the grip portion 52 is a length that allows the user to grasp it with one hand and is greater than the width of the palm from the index finger to the little finger. The vertical height Ho of the grip portion 52 is, for example, 100 mm to 200 mm. The outer diameter Do of the grip portion 52 is a diameter that allows the user to grasp it with one hand and is greater than the outer diameter D of the main body member 41. The outer diameter Do is, for example, 45 mm to 60 mm.

[0019] The grip portion 52 also has a hole 53b that is closed at the top and open at the bottom. The main body member 41 can be inserted into the hole 53b. The vertical depth Hi of the hole 53b is smaller than the vertical height Ho of the grip portion 52 and is greater than ¼ of the vertical height Ho of the grip portion 52. The inner diameter Di of the hole 53b is larger than the outer diameter D of the main body member 41. The inner diameter Di of the hole 53b may be a diameter that allows the main body member 41 to be inserted while being press-fitted into the hole 53b, or may be a diameter that allows the main body member 41 to be inserted without resistance. In addition, multiple long ribs may be formed on the outer surface of the grip portion 52 at intervals along the circumferential direction of the outer surface to prevent slippage, or multiple long annular ribs may be formed on the outer surface at intervals along the horizontal direction to prevent slippage.

[0020] Protective portion 54 is located on the outside of grip portion 52, and is a portion that protects the hand that is gripping grip portion 52. Protective portion 54 is configured to connect grip portion 52 from its upper end to its lower end on the outside of grip portion 52. A space S is formed between grip portion 52 and protective portion 54. Space S is large enough to allow a user's index finger through little finger to be inserted into space S. On the other hand, space S is too small to allow the insertion of an entire hand from the thumb to the little finger.

[0021] The protective portion 54 of this embodiment has an upper portion 55 , a lower portion 57 , and a central portion 59 . The upper portion 55 is a portion located above the protective portion 54. The upper portion 55 extends outward (away from the central axis O) from the outer peripheral edge of the upper end of the grip portion 52. The upper portion 55 extends in a direction substantially perpendicular to the central axis O. The upper portion 55 is substantially plate-shaped and formed with substantially the same thickness over substantially the entire upper portion 55. The outer surface 56a and the inner surface 56b of the upper portion 55 are each flat. Furthermore, the outer surface 56a and the inner surface 56b of the upper portion 55 are parallel to each other. The outer surface 56a of the upper portion 55 is substantially flush with the upper surface 53a of the grip portion 52.

[0022] The lower portion 57 is a portion located below the protective portion 54. The lower portion 57 extends outward from the outer peripheral edge of the lower end of the grip portion 52. The lower portion 57 is gradually inclined upward as it extends outward. Here, the inclination angle α1 of the lower portion 57 is greater than 40° and not greater than 50° (see the front view of FIG. 7). The lower portion 57 is generally plate-shaped and formed with a generally uniform thickness over substantially the entire lower portion 57. The outer surface 58a and the inner surface 58b of the lower portion 57 are each flat. The outer surface 58a and the inner surface 58b of the lower portion 57 are parallel to each other.

[0023] The central portion 59 is a portion located between the upper portion 55 and the lower portion 57. The central portion 59 extends in the vertical direction, with its upper side connected to the upper portion 55 and its lower side connected to the lower portion 57. The central portion 59 is generally plate-shaped and formed with a generally uniform thickness over substantially the entire central portion 59. The outer surface 60a and the inner surface 60b of the central portion 59 are both flat surfaces. Furthermore, the outer surface 60a and the inner surface 60b of the central portion 59 are parallel to each other.

[0024] The upper portion 55, the lower portion 57, and the central portion 59 have approximately the same width W in a plan view (or bottom view) along a direction perpendicular to a radial direction extending around the central axis O. Furthermore, the upper portion 55, the lower portion 57, and the central portion 59 have approximately the same plate thickness T.

[0025] The push member 40 can be assembled by inserting the upper end of the main body member 41 into the hole 53b of the protective member 51. When attaching the push member 40 to the cart main body 20, the main body member 41 of the push member 40 is inserted from above into the insertion hole 23 of the corner member 22, as shown in Figure 5. The lower end of the main body member 41 inserted into the insertion hole 23 is supported by the stopper portion 24 of the corner member 22, allowing the push member 40 to be attached to the cart main body 20. However, the main body member 41 may also be inserted into the insertion hole 23 of the corner member 22 in advance, and the protective member 51 may then be attached to the main body member 41, thereby attaching the push member 40 to the cart main body 20.

[0026] At this time, the user adjusts the protective member 51 to an appropriate position relative to the main body member 41 so that the grip portion 52 of the protective member 51 is easy to grasp and the protective portion 54 can protect the user's hand. Specifically, the user adjusts the protective member 51 by rotating it about the central axis of the main body member 41. However, because there is an appropriate gap between the insertion hole 23 of the corner member 22 and the main body member 41 of the push member 40 for inserting and removing the push member 40 into and from the insertion hole 23, the push member 40 itself to which the protective member 51 is attached may be rotated about the central axis of the main body member 41 to adjust the protective member 51 to an appropriate position.

[0027] Here, the position of the protection portion 54 when the protection member 51 of the hand push members 40A to 40D is in the appropriate position will be described. Here, the description will be given of push member 40B, but the protective part 54 of push member 40A is positioned symmetrically to the protective part 54 of push member 40B with respect to the center line C1 of the cart body 20 shown in Fig. 2. In addition, the protective parts 54 of push members 40C and 40D are positioned symmetrically to the protective parts 54 of push members 40A and 40B with respect to the center line C2 of the cart body 20.

[0028] As shown in FIG. 6(b), in a plan view (viewed from the direction along the longitudinal direction of the grip portion 52), the user will find that the protective portion 54 is located at a position that protrudes from the outer periphery of the cart main body 20, specifically, on the left side of the outer periphery. Furthermore, a central portion 59 of the protective portion 54 does not overlap with the cart main body 20 but is located outside the cart main body 20. Furthermore, the protective portion 54 is located so as to overlap with a straight line E1 that runs in the left-right direction and passes through the central axis O. Furthermore, the central portion 59 of the protective portion 54 is located so as to overlap with the straight line E1. On the other hand, the protective portion 54 is located so as not to overlap with a straight line E2 that runs in the front-rear direction and passes through the central axis O. Furthermore, in a side view (viewed from a direction perpendicular to the direction along the longitudinal direction of the grip portion 52), specifically, when viewed from the direction along the straight line E1, the protective portion 54 is located so as to overlap with the grip portion 52.

[0029] When a user grasps the grip portion 52 of the push member 40B attached to the cart main body 20 so that the protective portion 54 is in the position described above, the user inserts the index finger through the little finger of their left hand into the space S between the grip portion 52 and the protective portion 54 with the index finger on top and the little finger on the bottom, and grasps the grip portion 52 with the thumb of the left hand positioned on the opposite side of the protective portion 54 across the central axis O. Therefore, the area near the back of the left hand or the area near the third joint is located between the grip portion 52 and the protective portion 54.

[0030] In this way, by positioning the protective portion 54 on the outside of the grip portion 52, the protective portion 54 can protect the user's hands from objects when the user grasps (holds) the grip portion 52. Specifically, when the push members 40A to 40D approach an object around the transport cart 1, the protective portion 54 comes into contact with the object, thereby preventing the user's hands grasping the grip portion 52 from coming into contact with the object.

[0031] In the protective member 51 of this embodiment, the upper portion 55 of the protective portion 54 extends in a direction substantially perpendicular to the central axis O, thereby ensuring a wide space S. Therefore, the user can easily insert his or her hand into the space S between the grip portion 52 and the protective portion 54. Furthermore, because the lower portion 57 of the protective portion 54 is inclined so as to gradually become higher as it goes outward, even if an object comes into contact with the outer surface 58a of the lower portion 57, the impact can be alleviated by the object being guided downward by the inclined surface of the protective portion 54. Therefore, damage to the protective portion 54 or the object can be prevented.

[0032] <Second embodiment> Next, a protective member 151 according to a second embodiment will be described with reference to FIG. Fig. 8(a) is a perspective view of the protective member 151, and Fig. 8(b) is a front view, a plan view, a bottom view, and a right side view of the protective member 151. The rear view is omitted because it is symmetrical with the front view, and the left side view is omitted because it is the same as the left side view in Fig. 7.

[0033] The protective member 151 has a grip portion 52 and a protective portion 154. The grip portion 52 and the protective portion 154 are integrally formed. The grip portion 52 has the same configuration as in the first embodiment, and is therefore denoted by the same reference numerals in FIG. 8, and the description thereof will be omitted where appropriate.

[0034] The guard 154 has an upper portion 155 , a lower portion 157 , and a center portion 159 . The upper portion 155 is a portion located above the protective portion 154. The upper portion 155 extends outward from the outer peripheral edge of the upper end of the grip portion 52. The upper portion 155 is gradually inclined downward as it extends outward. Here, the inclination angle α2 of the upper portion 155 is greater than 25° and not greater than 40° (see the front view of FIG. 8(b)). The upper portion 155 is substantially plate-shaped and formed with substantially the same thickness over substantially the entire upper portion 155. The outer surface 156a and the inner surface 156b of the upper portion 155 are each flat. The outer surface 156a and the inner surface 156b of the upper portion 155 are parallel to each other.

[0035] The lower portion 157 is a portion located below the protective portion 154. The lower portion 157 extends outward from the outer peripheral edge of the lower end of the grip portion 52. The lower portion 157 is gradually inclined upward as it extends outward. Here, the inclination angle α3 of the lower portion 157 is greater than 25° and not greater than 40° (see the front view of FIG. 8(b)). The lower portion 157 is substantially plate-shaped and formed with substantially the same thickness over substantially the entire lower portion 157. The outer surface 158a and the inner surface 158b of the lower portion 157 are each flat. The outer surface 158a and the inner surface 158b of the lower portion 157 are parallel to each other.

[0036] Central portion 159 is a portion located between upper portion 155 and lower portion 157. Central portion 159 extends in the vertical direction, with its upper side connected to upper portion 155 and its lower side connected to lower portion 157. Central portion 159 is generally plate-shaped and formed with a generally uniform thickness over substantially the entire central portion 159. Central portion 159 has an outer surface 160a and an inner surface 160b that are both flat surfaces. Furthermore, central portion 159 has outer surface 160a and inner surface 160b that are parallel to each other.

[0037] The upper portion 155, the lower portion 157, and the central portion 159 have approximately the same width W in a direction perpendicular to a radial direction extending around the central axis O in a plan view (or bottom view). The upper portion 155, the lower portion 157, and the central portion 159 also have approximately the same plate thickness T.

[0038] In this embodiment, the protection portion 154 is also disposed in the same position as in the first embodiment, and the user can protect the user's hands from objects by grasping (holding) the grip portion 52. Furthermore, since the upper portion 155 of the protective portion 154 of this embodiment is inclined so as to gradually become lower as it goes outward, even if an object comes into contact with the outer surface 156a of the upper portion 155, the object is guided upward by the inclined surface of the protective portion 154 at the time of contact, thereby mitigating the impact.

[0039] Although the protective portion 154 of the present embodiment is configured to be vertically symmetrical with respect to the center line C in the vertical direction of the grip portion 52 (or the protective portion 154), it may also be configured to be vertically asymmetrical. For example, the inclination angle α2 of the upper portion 155 may be larger than the inclination angle α3 of the lower portion 157, or the inclination angle α2 of the upper portion 155 may be smaller than the inclination angle α3 of the lower portion 157. Furthermore, the inclination angle α2 of the upper portion 155 may be greater than 0° or may be greater than 10°. The inclination angle α3 of the lower portion 157 may be greater than 0° or may be greater than 10°.

[0040] <Third embodiment> Next, a protection member 251 according to a third embodiment will be described with reference to FIG. 9(a) is a perspective view of the protective member 251, and Fig. 9(b) is a front view, a plan view, a bottom view, and a right side view of the protective member 251. The rear view is omitted because it is symmetrical with the front view, and the left side view is omitted because it is the same as the left side view in Fig. 7.

[0041] The protective member 251 has a grip portion 52 and a protective portion 254. The grip portion 52 and the protective portion 254 are integrally formed. The grip portion 52 has the same configuration as in the first embodiment, and is denoted by the same reference numerals in FIG. 9, and the description thereof will be omitted as appropriate.

[0042] The protective part 254 is configured to connect the upper and lower ends of the grip part 52 on the outside of the grip part 52. A space S is formed between the grip part 52 and the protective part 254 into which the user's hand can be inserted. 9(b), the protective portion 254 has an arc-like or semicircular shape that protrudes outward. Specifically, the protective portion 254 extends outward (away from the central axis O) from the outer periphery of the upper end of the grip portion 52 and gradually curves downward. Furthermore, the protective portion 254 passes the center of the protective member 251 in the vertical direction and then curves gradually inward (toward the central axis O) to connect with the outer periphery of the lower end of the grip portion 52.

[0043] The protective portion 254 is generally plate-shaped and has a generally uniform thickness T over the entire protective portion 254. The outer surface 255a and the inner surface 255b of the protective portion 254 are curved. The outer surface 255a and the inner surface 255b of the protective portion 254 are parallel to each other. The width W of the protective portion 254 along a direction perpendicular to a radial direction extending about the central axis O is generally uniform over the entire protective portion 254 in a plan view (or bottom view). As shown in the front view of FIG. 9(b), the protective portion 254 has a generally uniform radius of curvature from the upper end to the lower end, but the radius of curvature may be smaller at the upper and lower ends and larger at the center, or may be larger at the upper and lower ends and smaller at the center.

[0044] In this embodiment, the protection portion 254 is also disposed in the same position as in the first embodiment, and the user can protect the user's hand from objects by grasping (holding) the grip portion 52. Furthermore, since the protective portion 254 of this embodiment is curved, even if an object comes into contact with the outer surface 255a of the protective portion 254, the object is guided upward or downward by the curved surface of the protective portion 254, thereby mitigating the impact.

[0045] Although the protective portion 254 of this embodiment has a vertically symmetrical configuration with respect to the center line C in the vertical direction of the grip portion 52 (or the protective portion 254), it may also have a vertically asymmetrical configuration. For example, the radius of curvature above the center line C may be smaller than the radius of curvature below the center line C, or the radius of curvature above the center line C may be larger than the radius of curvature below the center line C.

[0046] <Fourth embodiment> Next, a protection member 351 according to a fourth embodiment will be described with reference to FIG. Fig. 10(a) is a perspective view of the protective member 351, and Fig. 10(b) is a front view, a plan view, a bottom view, and a right side view of the protective member 351. The rear view is omitted because it is symmetrical with the front view, and the left side view is omitted because it is the same as the left side view in Fig. 7.

[0047] The protective member 351 has a grip portion 52 and a protective portion 354. The grip portion 52 and the protective portion 354 are integrally formed. The grip portion 52 has the same configuration as in the first embodiment, and is denoted by the same reference numerals in FIG. 10, and the description thereof will be omitted as appropriate.

[0048] The guard 354 has an upper portion 355 , a lower portion 357 , and a center portion 359 . The upper portion 355 has the same configuration as the upper portion 55 of the first embodiment.

[0049] The lower portion 357 is a portion located below the protective portion 354. The lower portion 357 extends outward from the outer peripheral edge of the lower end of the grip portion 52. The lower portion 357 extends in a direction substantially perpendicular to the central axis O. The lower portion 357 is substantially cylindrical and has a substantially constant outer diameter (outer shape) Du over substantially the entire portion. The lower portion 357 is disposed between the outer peripheral surface of the grip portion 52 and an inner surface 360b (described later) of the central portion 359.

[0050] Central portion 359 is a portion located between upper portion 355 and lower portion 357. Central portion 359 extends in the vertical direction, with its upper side connected to upper portion 355 and its lower side connected to lower portion 357. Central portion 359 is generally plate-shaped and formed with a generally uniform thickness over substantially the entire central portion 359. Central portion 359 has an outer surface 360a and an inner surface 360b that are both flat. Furthermore, central portion 359 has outer surface 360a and inner surface 360b that are parallel to each other.

[0051] The upper portion 355 and the central portion 359 have substantially the same width W in a plan view (or bottom view) along a direction perpendicular to a radial direction extending around the central axis O. Furthermore, the upper portion 355 and the central portion 359 have substantially the same plate thickness T.

[0052] In this embodiment, the protection portion 354 is also disposed in the same position as in the first embodiment, and the user can protect the user's hands from objects by grasping (holding) the grip portion 52. Furthermore, the outer diameter (outer shape) Du of the lower portion 357 of the protective portion 354 of this embodiment is larger than the plate thickness T of the upper portion 355 or the central portion 359, thereby improving the strength of the entire protective portion 354. Furthermore, the outer diameter (outer shape) Du of the lower portion 357 is smaller than the width W of the upper portion 355 or the central portion 359, thereby preventing the lower portion 357 from becoming a blind spot when the user checks the situation around them. The lower portion 357 is not limited to being substantially cylindrical, but may be substantially prismatic with rounded corners.

[0053] <Fifth embodiment> Next, a protection member 451 according to a fifth embodiment will be described with reference to FIG. 11(a) is a perspective view of the protective member 451, and Fig. 11(b) is a front view, a plan view, a bottom view, and a right side view of the protective member 451. Note that the rear view is omitted because it is substantially the same as the rear view of the protective member 51 of the first embodiment, and the left side view is omitted because it is substantially the same as the left side view of the protective member 51 of the first embodiment.

[0054] The protective member 451 has a grip portion 452 and a protective portion 54. The grip portion 452 and the protective portion 54 are integrally formed. The protective portion 54 has the same configuration as in the first embodiment, and the same reference numerals are used in FIG. 11, and the description thereof will be omitted as appropriate.

[0055] The grip portion 452 has a generally cylindrical shape that is long along the vertical direction when the user holds it, with the central axis O being approximately at the center. The central axis O of the grip portion 452 substantially coincides with the center line of the main body member 41 along the vertical direction. The vertical height Ho of the grip portion 452 is a length that allows a user to grasp it with one hand and is greater than the width of the palm from the index finger to the little finger. The outer diameter of the grip portion 452 is a diameter that allows a user to grasp it with one hand and is greater than the outer diameter D of the main body member 41.

[0056] The grip portion 452 has a hole 453b penetrating in the vertical direction. The grip portion 452 also has an opening 453c, which is formed by opening a portion of the generally cylindrical shape and connects the hole 453b to the outside of the grip portion 452. The opening 453c is formed from the upper end to the lower end of the grip portion 452. The width Wo of the opening 453c is smaller than the inner diameter Di of the hole 453b. However, by applying an external force to a pair of opposing opening edges 453d of the opening 453c, the grip portion 452 elastically deforms and the width Wo of the opening 453c can be expanded. Therefore, by applying a force to bring the grip portion 452 and the main body member 41 closer together while pressing the pair of opening edges 453d of the grip portion 452 against the outer peripheral surface of the main body member 41, the width Wo of the opening 453c expands, allowing the main body member 41 to be inserted into the hole 453b. When the main body member 41 is inserted into the hole 453b, the grip portion 452 deforms to its original shape. Therefore, the outer peripheral surface of the main body member 41 can be maintained in contact with the inner peripheral surface of the hole 453b, allowing the protective member 451 to be attached to the main body member 41. At this time, the contact between the outer peripheral surface of the main body member 41 and the inner peripheral surface of the hole 453b generates friction between them, maintaining the position (height) of the protective member 451 relative to the main body member 41 and preventing it from falling under its own weight. Note that a user can change the position (height) of the protective member 451 relative to the main body member 41 by applying force to the protective member 451, allowing the user to position the protective member 451 at a height desired by the user. Furthermore, by applying force to the protective member 451, the user can rotate the protective member 451 around the central axis of the main body member 41. Furthermore, the user can detach the protective member 451 from the main body member 41 by performing the reverse of the actions used to attach the protective member 451 to the main body member 41.

[0057] In this embodiment, the protection portion 54 is also disposed in the same position as in the first embodiment, and the user can protect the user's hand from objects by grasping (holding) the grip portion 452.

[0058] Sixth Embodiment Next, a protection member 551 according to a sixth embodiment will be described with reference to FIG. 12(a) is a perspective view of the protective member 551, and Fig. 12(b) is a front view, a plan view, a bottom view, and a right side view of the protective member 551. Note that the rear view is omitted because it is substantially the same as the rear view of the protective member 151 of the second embodiment, and the left side view is omitted because it is substantially the same as the left side view of the protective member 51 of the first embodiment.

[0059] The protective member 551 has a grip portion 452 and a protective portion 154. The grip portion 452 and the protective portion 154 are integrally formed. Here, the grip portion 452 has the same configuration as in the fifth embodiment, and the same reference numerals are used in Fig. 12, and the description thereof will be omitted as appropriate. The protection portion 154 has the same configuration as in the second embodiment, and the same reference numerals are used in Fig. 12, and the description thereof will be omitted as appropriate. In this embodiment, the protection portion 154 is also disposed in the same position as in the first embodiment, and the user can protect the user's hand from objects by grasping (holding) the grip portion 452.

[0060] Seventh Embodiment Next, a protection member 651 according to a seventh embodiment will be described with reference to FIG. 13(a) is a perspective view of the protective member 651, and Fig. 13(b) is a front view, a plan view, a bottom view, and a right side view of the protective member 651. Note that the rear view is omitted because it is substantially the same as the rear view of the protective member 251 of the third embodiment, and the left side view is omitted because it is substantially the same as the left side view of the protective member 51 of the first embodiment.

[0061] The protective member 651 has a grip portion 452 and a protective portion 254. The grip portion 452 and the protective portion 254 are integrally formed. Here, the grip portion 452 has the same configuration as in the fifth embodiment, and the same reference numerals are used in Fig. 13, and the description thereof will be omitted as appropriate. The protection portion 254 has the same configuration as in the third embodiment, and the same reference numerals are used in Fig. 13, and the description thereof will be omitted as appropriate. In this embodiment, the protection portion 254 is also disposed in the same position as in the first embodiment, and the user can protect the user's hand from objects by grasping (holding) the grip portion 452.

[0062] Eighth Embodiment Next, a protective member 751 according to an eighth embodiment will be described with reference to FIG. 14(a) is a perspective view of the protective member 751, and Fig. 14(b) is a front view, a plan view, a bottom view, and a right side view of the protective member 751. Note that the rear view is omitted because it is substantially the same as the rear view of the protective member 351 of the fourth embodiment, and the left side view is omitted because it is substantially the same as the left side view of the protective member 51 of the first embodiment.

[0063] The protective member 751 has a grip portion 452 and a protective portion 354. The grip portion 452 and the protective portion 354 are integrally formed. Here, the grip portion 452 has the same configuration as in the fifth embodiment, and the same reference numerals are used in Fig. 14, and the description thereof will be omitted where appropriate. The protection portion 354 has the same configuration as in the fourth embodiment, and the same reference numerals are used in Fig. 14, and the description thereof will be omitted where appropriate. In this embodiment, the protection portion 354 is also disposed in the same position as in the first embodiment, and the user can protect the user's hand from objects by grasping (holding) the grip portion 452.

[0064] <Ninth embodiment> Next, a protection member 851 according to a ninth embodiment will be described with reference to FIG. 15(a) is a perspective view of the protective member 851, and FIG. 15(b) is a front view, a plan view, a bottom view, and a right side view of the protective member 851. FIG.

[0065] The protective member 851 has a grip portion 452 and a protective portion 854. The grip portion 452 and the protective portion 854 are integrally formed. Here, the grip portion 452 has the same configuration as in the fifth embodiment, and the same reference numerals are used in FIG. 15, and the description thereof will be omitted as appropriate.

[0066] The guard 854 has an upper portion 855 , a lower portion 857 , and a center portion 859 . The upper portion 855 is a portion located above the protective portion 854. The upper portion 855 extends outward from the outer peripheral edge of the upper end of the grip portion 452. The upper portion 855 is generally plate-shaped and is formed with a substantially uniform plate thickness over substantially the entire upper portion 855. The outer surface 856a and the inner surface 856b of the upper portion 855 are each flat. Furthermore, the outer surface 856a and the inner surface 856b of the upper portion 855 are parallel to each other. The outer surface 856a of the upper portion 855 is generally flush with the upper surface of the grip portion 452. Furthermore, the width W1 of the upper portion 855 is greater than the outer diameter of the grip portion 452.

[0067] The lower portion 857 is a portion located below the protective portion 854. The lower portion 857 extends outward from the outer peripheral edge of the lower end of the grip portion 452. The lower portion 857 is generally plate-shaped and is formed with a generally uniform plate thickness over substantially the entire lower portion 857. The outer surface 858a and the inner surface 858b of the lower portion 857 are each flat. Furthermore, the outer surface 858a and the inner surface 858b of the lower portion 857 are parallel to each other. The outer surface 858a of the lower portion 857 is generally flush with the lower surface of the grip portion 452. Furthermore, the width W1 of the lower portion 857 is greater than the outer diameter of the grip portion 452.

[0068] The central portion 859 is a portion located between the upper portion 855 and the lower portion 857. The central portion 859 extends in the vertical direction, with its upper side connected to the upper portion 855 and its lower side connected to the lower portion 857. The central portion 859 is generally plate-shaped and formed with a generally uniform thickness over substantially the entire central portion 859. The outer surface 860a and the inner surface 860b of the central portion 859 are each flat. Furthermore, the outer surface 860a and the inner surface 860b of the central portion 859 are parallel to each other. Furthermore, the width W of the central portion 859 is smaller than the width W1 of the upper portion 855 and the lower portion 857.

[0069] The protective portion 854 also has reinforcing portions 861 at the boundary between an inner surface 856b of the upper portion 855 and an inner surface 860b of the central portion 859, and at the boundary between an inner surface 858b of the lower portion 857 and an inner surface 860b of the central portion 859. The reinforcing portions 861 are suspended obliquely across the adjacent inner surfaces. The upper portion 855, the lower portion 857, the central portion 859, and the reinforcing portions 861 have approximately the same plate thickness T.

[0070] In this embodiment, too, the protective portion 854 is disposed in the same position as in the first embodiment, and the user's hands can be protected from objects by grasping (squeezing) the grip portion 452. Furthermore, the large width W1 of the upper portion 855 and the lower portion 857 can better protect the hands from objects approaching relatively from above or below. Furthermore, although the protective portion 854 of this embodiment is configured to be vertically symmetrical with respect to the center line C in the vertical direction of the grip portion 452, it may also be configured to be vertically asymmetrical.

[0071] <Tenth embodiment> Next, a protection member 951 according to a tenth embodiment will be described with reference to FIG. 16(a) is a perspective view of the protective member 951, and FIG. 16(b) is a front view, a plan view, a bottom view, and a right side view of the protective member 951. FIG.

[0072] The protective member 951 has a grip portion 452 and a protective portion 954. The grip portion 452 and the protective portion 954 are integrally formed. Here, the grip portion 452 has the same configuration as in the fifth embodiment, and the same reference numerals are used in FIG. 16, and the description thereof will be omitted as appropriate.

[0073] The guard 954 has an upper portion 955 , a lower portion 957 , and a middle portion 959 . The upper portion 955 is a portion located above the protective portion 954. The upper portion 955 extends outward from the outer peripheral edge of the upper end of the grip portion 452. The upper portion 955 is generally plate-shaped and is formed with a substantially uniform thickness over substantially the entire upper portion 955. The outer surface 956a and the inner surface 956b of the upper portion 955 are each flat. Furthermore, the outer surface 956a and the inner surface 956b of the upper portion 955 are parallel to each other. The outer surface 956a of the upper portion 955 is substantially flush with the upper surface of the grip portion 452.

[0074] The lower portion 957 is a portion located below the protective portion 954. The lower portion 957 extends outward from the outer peripheral edge of the lower end of the grip portion 452. The lower portion 957 is generally plate-shaped and is formed with a substantially uniform thickness over substantially the entire lower portion 957. The outer surface 958a and the inner surface 958b of the lower portion 957 are each flat. Furthermore, the outer surface 958a and the inner surface 958b of the lower portion 957 are parallel to each other. The outer surface 958a of the lower portion 957 is generally flush with the lower surface of the grip portion 452.

[0075] The central portion 959 is a portion located between the upper portion 955 and the lower portion 957. The central portion 959 extends in the vertical direction, with its upper side connected to the upper portion 955 and its lower side connected to the lower portion 957. The central portion 959 is generally plate-shaped and formed with a generally uniform thickness over substantially the entire central portion 959. The outer surface 960a and the inner surface 960b of the central portion 959 are each flat. Furthermore, the outer surface 960a and the inner surface 960b of the central portion 959 are parallel to each other. Furthermore, the width W2 of the central portion 959 is greater than the width W of the upper portion 955 and the lower portion 957.

[0076] The protective portion 954 also has reinforcing portions 861 at the boundary between an inner surface 956b of the upper portion 955 and an inner surface 960b of the central portion 959, and at the boundary between an inner surface 958b of the lower portion 957 and an inner surface 960b of the central portion 959. The reinforcing portions 861 are suspended obliquely across the adjacent inner surfaces. The upper portion 955, the lower portion 957, the central portion 959, and the reinforcing portions 861 have approximately the same plate thickness T.

[0077] In this embodiment, too, the protective portion 954 is disposed in the same position as in the first embodiment, and the user's hands can be protected from objects by grasping (holding) the grip portion 452. Furthermore, since the width W2 of the central portion 959 is large, the hands can be better protected from objects approaching relatively from the side. Furthermore, although the protective portion 954 of this embodiment is configured to be vertically symmetrical with respect to the center line C in the vertical direction of the grip portion 452, it may also be configured to be vertically asymmetrical.

[0078] <Eleventh embodiment> Next, a protective member 1051 according to an eleventh embodiment will be described with reference to FIG. 17(a) is a perspective view of the protective member 1051, and FIG. 17(b) is a front view, a plan view, a bottom view, and a right side view of the protective member 1051. FIG.

[0079] The protective member 1051 has a grip portion 452 and a protective portion 1054. The grip portion 452 and the protective portion 1054 are integrally formed. Here, the grip portion 452 has the same configuration as in the fifth embodiment, and the same reference numerals are used in FIG. 17, and the description thereof will be omitted as appropriate.

[0080] The guard 1054 has an upper portion 955 , a lower portion 957 , and a center portion 859 . The upper portion 955 has the same configuration as the upper portion 955 of the tenth embodiment. The lower portion 957 has the same configuration as the lower portion 957 of the tenth embodiment. The central portion 859 has the same configuration as the central portion 859 of the ninth embodiment. The protective portion 1054 also has reinforcing portions 861 at the boundary between the inner surface 956b of the upper portion 955 and the inner surface 860b of the central portion 859, and at the boundary between the inner surface 958b of the lower portion 957 and the inner surface 860b of the central portion 859. The reinforcing portions 861 are suspended obliquely across the adjacent inner surfaces.

[0081] Furthermore, the protective portion 1054 has a reinforcing portion 1060 formed integrally with the upper portion 955, the central portion 859, and the lower portion 957, spanning the outer surface 956a of the upper portion 955, the outer surface 860a of the central portion 859, and the outer surface 958a of the lower portion 957. The reinforcing portion 1060 is located at the widthwise center of the upper portion 955, the widthwise center of the central portion 859, and the widthwise center of the lower portion 957, respectively. The reinforcing portion 1060 is generally plate-shaped and generally U-shaped in a front view. The upper portion 955, the lower portion 957, the central portion 859, the reinforcing portion 861, and the reinforcing portion 1060 have approximately the same plate thickness T.

[0082] In this embodiment, too, the protective portion 1054 is disposed in the same position as in the first embodiment, and the user's hand can be protected from objects by grasping (squeezing) the grip portion 452. Furthermore, since the protective portion 1054 has the reinforcing portion 1060, the strength of the protective portion 1054 can be improved. Furthermore, although the protective portion 1054 of this embodiment is configured to be vertically symmetrical with respect to the center line C in the vertical direction of the grip portion 452, it may also be configured to be vertically asymmetrical.

[0083] The present invention has been described above using the above-mentioned embodiments, but the present invention is not limited to the above-mentioned embodiments and modifications are possible within the scope of the present invention. Part of the configuration of each embodiment may be combined with other embodiments, or the following modified examples may be combined as appropriate.

[0084] In the above-described embodiments, the protective portions 54, 154, 254, 354, 854, 954, 1054 are not limited to extending outward from the upper end of the grip portion 52, 452, but may extend outward from a position spaced below the upper end. In the above-described embodiments, the protective portions 54, 154, 254, 354, 854, 954, 1054 are not limited to extending outward from the lower end of the grip portion 52, 452, but may extend outward from a position spaced above the lower end.

[0085] In the above-described embodiment, the widths W (or width W1, width W2) of the upper portions 55, 155, 355, 855, 955, lower portions 57, 157, 857, 957, and central portions 59, 159, 359, 859, 959 are not limited to being approximately the same, and for example, the width W (or width W1) of the upper portions 55, 155, 355, 855, 955 may be made larger in stages or continuously than the central portions 59, 159, 359, 859, 959 as they approach the central axis O, and the width W (or width W1) of the lower portions 57, 157, 855, 955 may be made larger in stages or continuously than the central portions 59, 159, 859, 959 as they approach the central axis O. In the above-described embodiment, the width W of the protection portion 254 is not limited to being substantially constant. For example, the width W of the protection portion 254 may increase stepwise or continuously as it approaches the central axis O.

[0086] In the above-described embodiment, the upper portion 55, 155, 355, 855, 955 of the protective portion 54, 154, 354, 854, 954, 1054 may be eliminated, and the protective portion may have only the lower portion 57, 157, 357, 857, 957 and the central portion 59, 159, 359, 859, 959. Furthermore, the upper portion 55, 155, 355, 855, 955 and the central portion 59, 159, 359, 859, 959 of the protective portion 54, 154, 354, 854, 954, 1054 may be eliminated, and the protective portion may have only the lower portion 57, 157, 357, 857, 957. In the above-described embodiment, the protective portion 54, 154, 354, 854, 954, 1054 may be configured to have only the upper portion 55, 155, 355, 855, 955 and the central portion 59, 159, 359, 859, 959, without the lower portion 57, 157, 857, 957 and the central portion 59, 159, 359, 859, 959, without the lower portion 57, 157, 357, 857, 957 and the central portion 59, 159, 359, 859, 959, without the upper portion 55, 155, 355, 855, 95 ... upper portion 55, 155, 355, 855, 955, without the lower portion 57, 159, 357, 857, 957 and the central portion 59, 159, 359, 859, 959, without the upper portion 55, 155, 355, 855, 955, without the In the above-described embodiment, the protective portions 54, 354 may have a shape that is upside down with respect to the center line C when viewed from the front (and rear). In the above-described embodiment, the reinforcing portion 861 may be provided on at least one of the top and bottom, or may be provided on other protective portions.

[0087] In the above-described embodiment, the thicknesses T of the upper portions 55, 155, 855, 955, the lower portions 57, 157, 857, 957, and the central portions 59, 159, 859, 959 are not limited to being approximately the same, and for example, the thicknesses T of the upper portions 55, 155, 855, 955 and the lower portions 57, 157, 857, 957 may be greater than the thickness T of the central portions 59, 159, 859, 959, or may be smaller than the thickness T of the central portions 59, 159, 859, 959. In the above-described embodiment, the thickness T of the protection portion 254 is not limited to being substantially uniform, but may be increased stepwise or continuously as it approaches the central axis O, for example.

[0088] In the above-described embodiment, the width W of the protective portions 54, 154, 254, 354, 854, 954, 1054 is formed to be larger than the outer diameter D of the main body member 41, but it may be formed to be approximately the same as or smaller than the outer diameter D. In the above-described embodiment, the lengths and angles are merely examples and are not limited to the above-described numerical values. [Explanation of symbols]

[0089] 1: Transport cart 20: Cart body 30: Running part 40: Hand push member 41: Main body member 51, 251, 351, 451, 551, 651, 751, 851, 951, 1051: Protective member 52, 452: Grip part 54, 154, 254, 354, 854, 954, 1054: Protective part 55, 155, 355, 855, 955: Upper part 57, 157, 357, 857, 957: Lower part 59, 159, 359, 859, 959: Center part

Claims

1. A hand push member that is detachably attached to a cart body of a transport cart, a grip portion that a user holds with their hand; A hand push member characterized by having a protective portion located outside the grip portion and protecting the hand gripping the grip portion.

2. The hand push member is A rod-shaped member is detachably attached to the carriage body, The protective part is 2. The hand push member according to claim 1, which is detachable from the rod-shaped member without using any tools.

3. A protective member attached to a rod-shaped member detachably attached to a carriage body of a transport carriage, a grip portion that a user holds with their hand; a protective portion located outside the grip portion and protecting a hand gripping the grip portion.

4. The protective member is 4. The protective member according to claim 3, which is detachable from the rod-shaped member without using a tool.

Images