Cart fall prevention device

Abstract

We provide a trolley anti-slip device to prevent cargo from sliding off. [Solution] The trolley fall prevention device includes a front-clamping type trolley fall prevention device and an upper and lower-clamping type trolley fall prevention device. 1. The front-clamping type trolley fall prevention device is used for trolleys with a grid-like back surface and consists of a prevention plate, a front plate, and a rear plate. The prevention plate fits into the front plate and slides. The back surface (fitting side) of the prevention plate is provided with a prevention plate slider and a prevention plate stopper. The rear plate has a groove opening in the center of its vertical surface and is further provided with a thickness bar to connect with the front plate. The edge of the trolley is clamped and attached by the front and rear plates. 2. The upper and lower-clamping type trolley fall prevention device is used for trolleys with a plate-like back surface and consists of a prevention plate, an upper plate, and a lower plate. The prevention plate fits into the upper plate and slides. The back surface (fitting side) of the prevention plate is provided with a prevention plate slider and a prevention plate stopper. The lower plate is connected to the upper plate and is slidable, and the edge of the trolley is clamped and attached from above and below.

Description

Technical Field

[0001] When transporting goods on a trolley, the goods may sometimes shift and fall off. This relates to preventing the goods from shifting and falling off.

Background Art

[0002] When transporting goods on a trolley, due to road conditions, steps, etc., the goods may move and shift forward and fall off sometimes.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] Regarding preventing the slipping of goods, a trolley equipped with a rotating shelf for preventing the spilling of goods, as shown in Japanese Patent Application Laid-Open No. 2022-159837, has been proposed. The trolley body is equipped with a rotating shelf and can be pulled up or stored as needed. Also, a protrusion for preventing the slipping of goods, as shown in Japanese Patent Application Laid-Open No. Hei 8-301117, has been proposed. The L-shaped angle as a protrusion member is fixed with bolts and nuts. It is thought that in use, the bolts and nuts are removed, the orientation of the L-shaped angle is changed, and then it is fixed again with bolts and nuts. Therefore, the following problems can be considered. 1. The anti-dropping function is for a dedicated trolley. 2. It has no versatility and cannot be attached to a general trolley.

Means for Solving the Problems

[0005] An anti-slip device (this device) is attached to the tip of the trolley to prevent slipping. Note that the trolley has a lattice-like object and a plate-like object on its back surface. For trolleys with a grid-like underside, the front clamping type will be used. For trolleys with a flat underside, a top-and-bottom clamping system will be used. This section describes a front-clamp type fall prevention device with a grid-like backing. This device consists of a stopper plate, a front plate, and a rear plate. The stopper plate fits into the front plate and slides. The stopper plate is a rectangular plate with a length that takes into account the load on the cargo bed, and its length is designed to prevent the load from sliding off, taking into account the height that protrudes from the surface of the cargo bed. On the back of the protective plate, there are screw holes, a protective plate slider, a protective plate stopper, and a spring on the protective plate stopper. First, the protective plate slider is a U-shaped plate that is installed vertically at the same position on both sides, separated from the center of the protective plate in the horizontal direction. Its length is about half the length of the protective plate in the vertical direction, and its lower end is at the bottom edge of the protective plate in the horizontal direction. Next, the protective plate stopper is a plate with its tip bent into a V-shape, installed vertically near the center of the protective plate in the horizontal direction, and is movable with its lower side as the pivot point, and a spring is installed below it. Finally, the screw holes are installed on the lower side of the center of the protective plate in the horizontal direction, separated from each other at the same position on both sides, and are on the inside of the protective plate slider. Furthermore, the front plate is a rectangular board, and its vertical length is the same as the vertical length of the aforementioned protective plate. Its horizontal length is also approximately the same as its vertical length. The front plate's vertical surface is provided with a plate slider, slider stopper, guide stopper, and screw holes. First, the plate slider is a U-shaped plate with the same length as the front plate's vertical length, and is provided at both ends of the front plate's vertical surface. The lower end of the U-shape is closed and engages with the aforementioned anti-slider plate. Next, the slider stopper is an L-shaped plate and is provided to close the upper end of the U-shape of the plate slider. Next, the guide stopper is an L-shaped plate and is provided vertically in the center of the front plate's vertical surface, with a length of about half the length of the front plate and its upper end at the top edge of the front plate. Next, the screw holes are provided at the same positions, separated on the left and right sides, below the center of the front plate's vertical surface, on the inside of the plate slider, and in the same position as the screw holes of the anti-slider plate. The rear plate is a rectangular plate with shorter vertical and horizontal lengths than the front plate, and has a vertically opening groove in the center of its vertical surface, with tapped screws and a thickness bar provided. The length of the groove in the center is about half the vertical length. This groove is due to the characteristics of the trolley. The tapped screws are located at the same positions, separated on the left and right sides, on the lower side of the center of the vertical surface, and are joined to the front plate at the same positions as the screw holes in the front plate. The thickness bar is a long, narrow rectangular plate whose length is the same as the width of the rear plate, and it is installed horizontally below the tapped screw. The thickness bar is designed to prevent the device from falling off when attached to a trolley. Since the thickness of the grid pattern on the underside varies depending on the type of trolley, the thickness of the thickness bar will also vary. Next, I will explain the top and bottom clamping type trolley fall prevention device, which has a plate-like backing. This device consists of a protective plate, an upper plate, and a lower plate. The protective plate fits into the upper plate and slides. The protective plate is the same as the aforementioned grid-like front clamp type. The upper plate has an L-shaped surface, and the vertical length of the vertical surface is the same as the vertical length of the protective plate, and the horizontal length is also about the same as the vertical length. Furthermore, the length of the horizontal surface, which is the top surface perpendicular to the vertical surface, is long enough to slightly overlap the loading platform of the trolley. The upper plate's vertical surface is provided with a plate slider, slider stopper, guide stopper, and elongated screw holes. Initially, the plate slider is a U-shaped plate, installed vertically at both ends of the upper plate's vertical surface, with a length equal to the vertical length of the vertical surface. Furthermore, the lower end of the U-shape is closed and engages with the aforementioned anti-sliding plate. Next, the slider stopper is an L-shaped plate that is installed to block the U-shape at the upper end of the plate slider. Next, the guide stopper is an L-shaped plate that is installed vertically in the center of the vertical surface of the upper plate, with a length of about half the vertical length, and its upper end is at the top edge of the vertical surface. Next, the elongated screw holes are provided vertically on both the left and right sides, approximately midway between the plate slider and the guide stopper, and the length of the elongated screw holes is several times the diameter of the mounting screw. Furthermore, the lower plate has an L-shaped surface, and the size of its vertical surface is smaller than that of the upper plate. Moreover, the horizontal surface, which is perpendicular to the vertical surface, is longer than the horizontal surface, which is the top surface of the upper plate. Tap screws are provided on the vertical surface of the lower plate at the same positions, separated to the left and right from the center of the vertical surface, and are joined to the rear side of the vertical surface of the upper plate at the same positions as the elongated screw holes of the upper plate, allowing it to slide. Multiple tap screws are provided on the horizontal surface, which is the bottom surface, for fixing the device to the trolley. [Effects of the Invention]

[0006] It can be attached to a general trolley with a driver. The anti-slip plate can be raised and lowered with one touch, allowing for safe transportation.

Brief Description of the Drawings

[0007] Front clamping type [Figure 1] Mounting drawing [Figure 2] Perspective view (back side) [Figure 3] Back side view of the anti-slip plate [Figure 4] Front plate drawing [Figure 5] Rear plate drawing, top and bottom clamping type [Figure 6] Mounting drawing [Figure 7] Perspective view (back side) [Figure 8] Combined drawing of top and bottom plates (front side) [Figure 9] Combined drawing of top and bottom plates (back side)

Modes for Carrying Out the Invention

[0008] Here, the anti-slip of the front clamping type with a lattice pattern on the back side will be described. This device consists of an anti-slip plate (1), a front plate (2), and a rear plate (3). The anti-slip plate (1) fits and slides on the front plate (2). The anti-slip plate (1) is a rectangular plate with a length considering the goods on the loading platform. The vertical length is considered to prevent the goods from slipping off, taking into account the height protruding from the loading platform surface. On the back of the protective plate (1), there are screw holes (4), a protective plate slider (5), a protective plate stopper (6), and a spring (7) attached to the protective plate stopper (6). First, the protective plate slider (5) is a U-shaped plate, installed vertically at the same positions on both sides, separated from the horizontal center of the protective plate (1), with a length of about half the vertical length of the protective plate (1), and its lower end is at the horizontal bottom edge of the protective plate (1). Next, the protective plate stopper (6) is a plate with its tip bent in a V-shape, installed vertically near the horizontal center of the protective plate (1), movable with its lower side as the pivot point, and further, a spring (7) is attached below it. Next, the screw holes (4) are installed on the lower side of the horizontal center of the protective plate (1) at the same positions separated on both sides, and are on the inside of the protective plate slider (5). Furthermore, the front plate (2) is a rectangular plate whose vertical length is the same as the vertical length of the aforementioned protective plate (1). Its horizontal length is also about the same as its vertical length. The vertical surface of the front plate (2) is provided with a plate slider (8), a slider stopper (9), a guide stopper (10), and screw holes (11). First, the plate slider (8) is a U-shaped plate whose length is the same as the vertical length of the front plate (2), and is provided at both ends of the vertical surface of the front plate (2), with the lower end of the U-shape being closed (12) and fitted with the aforementioned protective plate slider (5). Next, the slider stopper (9) is an L-shaped plate and is provided so as to close the upper end of the U-shape of the plate slider (8). Next, the guide stopper (10) is an L-shaped plate and is provided in the vertical direction in the center of the vertical surface of the front plate (2), with its length being about half the vertical length of the front plate (2) and its upper end being the upper edge of the front plate (2). Next, the screw holes (11) are located on the lower side of the center of the vertical surface of the front plate (2) at the same position, separated on the left and right, and are inside the plate slider (8), in the same position as the screw holes (4) of the prevention plate (1). The rear plate (3) is a rectangular plate, smaller in length and width than the front plate (2), and has a vertically opening groove in the center of its vertical surface, on which tapped screws (14) and thickness bars (15) are provided. The length of the groove in the center is about half the length of the vertical section. This groove is due to the characteristics of the trolley. The tapping screw (14) is provided at the same position on the lower side of the center of the vertical surface, separated left and right, and joins the front plate (2) at the same position as the screw hole (11) of the front plate (2). The thickness bar (15) is an elongated rectangular plate, the length of which is the same as the horizontal length of the rear plate (3), and is provided horizontally below the tapping screw (14). Incidentally, the thickness bar (15) prevents the device from falling off when attached to the cart. Since the grid-like thickness on the back surface varies depending on the type of cart, the thickness of the thickness bar (15) also varies. The procedure for attaching the device to the cart and its use will be described. For attachment, sandwich the tip of the cart with the front plate (2) and the rear plate (3), and tighten the screws with a driver to complete. When in use, lift the protection plate (1), and it will stop at a position higher than the loading surface. When storing, lift the "く" shape of the protection plate stopper (6) and push down the protection plate (1) for storage. First, for attachment, slightly connect the front plate (2) and the rear plate (2) with screws in advance, insert them into the tip of the cart, and from the screw hole (11) of the protection plate (1), slightly tighten the screws with a driver to adjust the upper side of the protection plate (1) to the same height as the loading surface, and then tighten with a driver to complete. When in use, lift the protection plate (1), and it will stop at a position higher than the loading surface. The lifting of the protection plate (1) is due to the fitting of the protection plate slider (5) and the plate slider (8). At this time, the protection plate stopper (6) rises along the guide stopper (10) under the action of the spring (7). When the protection plate (1) further rises, the rising stops due to the slider stopper (9). At this time, the "く" shape at the tip of the protection plate stopper (6) is hooked on the guide stopper (10), and the protection plate is fixed. When storing, raising the angle of the protective plate stopper (6) releases the catch of the guide stopper (10), and pushing down the protective plate (1) causes it to lower due to the engagement of the protective plate slider (5) and the plate slider (8). At this time, the protective plate stopper (6) also lowers along the guide stopper (10) due to the action of the spring (7). As it lowers further, the U-shape at the lower end of the plate slider (8) is closed (12), so the protective plate (1) is stored and becomes level with the height of the loading platform. The device can be attached to a trolley with just a screwdriver, the protective plate can be raised, and cargo can be transported safely. Next, we will describe a trolley fall prevention device with a plate-like back surface that clamps from above and below. This device consists of a prevention plate (1), an upper plate (16), and a lower plate (17). The prevention plate (1) fits into the upper plate (16) and slides. The prevention plate (1) is the same as the grid-like front clamp type described above. Furthermore, the upper plate (16) has an L-shaped surface, and the vertical length of the vertical surface is the same as the vertical length of the aforementioned prevention plate (1), and the horizontal length is also about the same as the vertical length. In addition, the length of the horizontal surface, which is the top surface perpendicular to the vertical surface, is long enough to slightly overlap the loading platform of the trolley. The upper plate is provided with a plate slider (18), a slider stopper (19), a guide stopper (20), and a screw slot (21) on its vertical surface. First, the plate slider (18) is a U-shaped plate provided vertically at both ends of the vertical surface of the upper plate (16), and its length is the same as the vertical length of the vertical surface. Furthermore, the lower end of the U-shape (22) is closed and fitted with the aforementioned anti-sliding plate slider (5). Next, the slider stopper (19) is an L-shaped plate provided to close the U-shape at the upper end of the plate slider (18). Next, the guide stopper (20) is an L-shaped plate provided vertically in the center of the vertical surface of the upper plate (16), and its length is about half the vertical length, with its upper end at the top edge of the vertical surface. Next, the elongated screw holes (21) are provided vertically on both the left and right sides, approximately midway between the plate slider (18) and the guide stopper (20), and the length of the elongated screw holes (21) is several times the diameter of the mounting screw. Furthermore, the lower plate (17) has an L-shaped surface, and the size of its vertical surface is smaller than that of the upper plate (16). Moreover, the horizontal surface, which is the bottom surface perpendicular to the vertical surface, is longer than the horizontal surface, which is the top surface of the upper plate (16). Tap screws (23) are provided on the vertical surface of the lower plate (17) at the same positions to the left and right of the center of the vertical surface, and are joined to the rear side of the vertical surface of the upper plate (16) at the same positions as the elongated screw holes (21) of the upper plate (16), allowing it to slide. Multiple tap screws (24) are provided on the horizontal surface, which is the bottom surface, for fixing the device to the trolley. This document explains the procedure for attaching this device to a trolley and how to use it. To install, sandwich the front end of the trolley's loading platform between the upper plate (16) and the lower plate (17), and tighten with a Phillips head screwdriver. When in use, lift the protective plate (1) and it will stop at a position higher than the loading surface. When storing, lift the angled part of the protective plate stopper (6) and push down the protective plate (1) to store it. To begin installation, slightly connect the upper plate (16) and lower plate (17) through the elongated screw holes (21), then sandwich the front end of the loading platform between the upper plate (16) and lower plate (17), and slide the lower plate (17) to adjust the clamping force. Tighten the screws through the elongated screw holes (21) to secure the upper plate (16) and lower plate (17). Finally, tighten the screws through the tapped screws (24) on the lower plate (17) to secure the device to the trolley, completing the installation. When using it, the process is the same as the front-clamping type described above. When storing it, the process is also the same as the front-clamping type described above. This device can be attached to a trolley with just a screwdriver, and the safety plate can be raised, allowing you to transport goods safely. [Explanation of symbols]

[0009] 1 Prevention plate 2 Front Plate 3 Rear plate 4 screw holes 5. Anti-slip plate slider 6. Prevention plate stopper 7 Springs 8 Plate Sliders 9. Slider Stopper 10 Guide stopper 11 screw holes 12 U-shaped block 13 Open groove 14 tap screws 15 Thickness Bar 16 Top plate 17 Lower plate 18 Plate Slider 19 Slider Stopper 20 Guide Stopper 21 Screw slots 22 U-shaped block 23 Tap screws 24 tapping screws

Claims

1. This is a front-clamping type trolley fall prevention device used for trolleys with a grid-like underside. It consists of a prevention plate, a front plate, and a rear plate. The prevention plate fits into the front plate and slides. The underside (fitting side) of the prevention plate is equipped with a prevention plate slider and a prevention plate stopper. The front plate is equipped with a plate slider, a slider stopper, and a guide stopper. The rear plate has a groove opening in the center of its vertical surface, and a thickness bar is provided at its lower part. It is fixed to the trolley by clamping the edge of the trolley and connecting it with screws.

2. This is a fall prevention device for trolleys with a plate-shaped underside, consisting of a prevention plate, an upper plate, and a lower plate. The prevention plate fits into the upper plate and slides. The underside (fitting side) of the prevention plate is equipped with a prevention plate slider and a prevention plate stopper. The upper plate is equipped with a plate slider, a slider stopper, and a guide stopper. The lower plate is connected to the upper plate and has a slidable structure, sliding while gripping the edge of the trolley, and securing the trolley by clamping it from above and below. This is a top-and-bottom clamping type trolley fall prevention device.

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