JP2017105352A - Truck detachable step - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detachable step that is simple in structure and highly usable and that can be detachably attached to a position where the gate of the fallen-down load-carrying platform of a truck is necessary.SOLUTION: A step 10 has: an attaching part 11 for attachment to a slot 9 formed in the gate of the load-carrying platform of a truck ; and a footstool part 12 used as a foothold. The attaching part 11 has a plurality of attaching metal fittings 14 for insertion into the slot 9 and attachment. At the upper end and the lower end of each of the attaching metal fittings 14, a first notched part 16 and a second notched part 17 are formed to be recessed so that the upper edge 9a and the lower edge 9b of the slot 9 can be fitted to be engaged, and the depth of the first notched part 16 bof the upper end side is larger than that of the second notched part 17 of he lower end side.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a detachable step that is used by being attached to a tilt of a loading platform of a truck.

  Side wall plates called “aori” are attached to the left and right side surfaces and the rear surface of the loading platform of the truck. This tilt can be raised and lowered, and usually the loading and unloading work is performed with the tilt tilted to the outside of the loading platform. At this time, the operator needs to go up and down from the loading platform as necessary. However, since the height of the loading platform is quite high, it is disclosed in Patent Documents 1-3 in order to facilitate the getting on and off operation. As described above, various auxiliary devices such as steps and ladders have been proposed.

Among these, the steps or ladders disclosed in Patent Documents 1 and 2 are assembled to the inner surface of the tilt integrally with the tilt, and are configured to be usable by defeating the tilt. .
However, in the case where the step or ladder is assembled in this way, the step or ladder must be assembled in a tilt by a dedicated mounting mechanism, and the structure of the tilt or the step or ladder becomes considerably complicated. Moreover, since the step or ladder is attached at a fixed position in the lateral direction of the tilt, the worker can only get on and off the loading platform at that position, which hinders the work of loading and unloading the luggage. The step or ladder cannot be removed and used in common with other trucks.

  On the other hand, the step disclosed in Patent Document 3 can be used by being detachably attached to the tilted tilt, but the configuration is formed with a pair of groove-shaped hooks on the upper and lower sides of the step, Because the hook is locked to the upper end of the tilted tilt, if there is not enough clearance between the tilt and the loading platform, or if the groove width of the hook and the thickness of the tilt If it does not match, it cannot be used.

JP 2014-94696 A JP-A-2015-704 JP-A-6-173561

  The technical problem of the present invention is to provide a detachable step having a simple structure and excellent usability, which can be detachably attached to a necessary position of a tilted tilt of a loading platform of a truck.

  In order to solve the above-mentioned problem, the step of the present invention has an attachment part for attaching to a slot provided in a tilt of a loading platform of a truck, and a step part for making a scaffold, A plurality of mounting brackets inserted into the slot for locking, and the upper and lower end portions of the mounting bracket are recessed to engage and lock the upper and lower edges of the slot; A first notch and a second notch are formed, and the depth of the first notch on the upper end side is deeper than the depth of the second notch on the lower end side.

  According to a specific configuration aspect of the present invention, the mounting portion has a vertical base portion extending in a vertical direction, and the two vertical mounting portions are provided so that the two mounting brackets are parallel to each other. The step portion has a horizontal base portion extending laterally from the vertical base portion, and a tread plate having an anti-slip function is attached to the horizontal base portion. It is desirable that the tread plate is attached at a position above the mounting bracket.

In the present invention, the mounting bracket may be provided with a contact portion that contacts the lower edge portion of the slot when the step is attached to the slot and prevents the step from being displaced upward.
In this case, preferably, the mounting bracket is provided with a lever member that is rotatable in the front-rear direction of the step, and a spring that urges the lever member so that the upper end side is inclined toward the rear side of the step. The lever member is formed with an operation portion for rotating the lever member against the biasing force of the spring and the contact portion.

  The upper end portion of the lever member extends upward from the upper end of the mounting bracket, the operation portion is formed at the upper end portion of the lever member, and the contact portion of the lever member is the upper end portion of the mounting bracket. It is desirable that the lower portion is formed at a position higher than the bottom of the first notch.

  Alternatively, a projecting wall having a height lower than the rear end wall is formed on the rear end wall of the first cutout portion so as to protrude toward the front end wall side of the first cutout portion. The contact portion may be formed at the upper end portion.

  The steps of the present invention can be easily attached to a slot formed in the tilt of the loading platform of the lorry with the tilt tilted down, and can be shared with other lorries having similar slots. it can. In addition, the mounting can be performed simply by inserting a mounting bracket into the slot and locking the mounting bracket to the hole edge of the slot, so that the attaching / detaching work is easy, the usability is excellent, and the configuration is simple.

It is a perspective view which shows the state which attached the step which concerns on this invention to the lorry. It is a principal part enlarged view of FIG. FIG. 3 is a cross-sectional view of FIG. 2. It is a perspective view of a step. It is a side view which expands and shows the principal part of FIG. It is a longitudinal cross-sectional view of FIG. It is sectional drawing which shows the state just before attaching a step to a slot. It is sectional drawing which shows the initial stage of the process of attaching a step. It is sectional drawing which shows the intermediate | middle stage of the process. It is sectional drawing which shows the modification of a step. It is a principal part enlarged view of FIG.

  FIG. 1 shows a state in which a step 10 according to the present invention is attached to a truck 1. The cargo vehicle 1 is called a wing body vehicle including a wing body type loading platform 2, and the loading platform 2 includes a floor plate 3, a front panel 4 provided on the front surface of the loading platform 2, and the loading platform 2. Provided on both left and right side surfaces so as to be able to be opened and lowered toward the outside, a rear door 6 provided on the rear surface of the cargo bed 2, and a flip-up type on the upper surface of the cargo bed 2. A metal elongate rail 8 for attaching a metal fitting for a load collapse prevention belt (not shown) is provided on the inner surface of the front panel 4 and the right and left tilts 5 horizontally or horizontally. It is attached.

  As is apparent from FIG. 2, the rail 8 is a rail having a cross-sectional shape and extends near the upper end of the inner surface of the left and right tilters 5 over almost the entire length of the tilters 5. It is attached as follows. A plurality of slots 9 elongated in the width direction (vertical direction of the tilt 5) are formed in the rail 8 so as to be arranged in parallel at a constant interval in the longitudinal direction of the rail 8.

  In the step 10, the load collapse prevention belt attaching rail 8 attached to the tilt 5 of the lorry 1 is used to attach the load 5 to the tilt 5, and a load is loaded on the loading platform 2 of the lorry 1. When lowering, as shown in FIGS. 1 to 3, when the wing roof 7 is opened and the tilt 5 is tilted outward, it is mounted on the slot 9 of the rail 8 and used.

  As shown in FIG. 4, the step 10 includes an attachment portion 11 for attaching to the slot 9 and a step portion 12 for making a scaffold. In the following description, the side where the mounting portion 11 is located is the rear side of step 10, and the side where the step 12 is extended from the mounting portion 11 is the front side of step 10.

  The mounting portion 11 includes a plurality of vertically long mounting brackets 14 that are inserted into the slot 9 and locked to the slot 9 in a rectangular vertical base portion 13 made of metal, and the rail 8. Alternatively, a plurality of contact bodies 15 made of synthetic rubber, synthetic resin, or the like that are in contact with the tilt 5 are provided. As the metal, iron, stainless steel, aluminum alloy and the like are suitable.

  As apparent from FIGS. 5 and 6, the mounting bracket 14 is formed in a hollow shape by bending a metal plate made of iron, stainless steel, aluminum alloy or the like into a substantially U shape. The vertical base has a side wall 14a, 14a and a rear end wall 14b connecting the rear end portions of the left and right side walls 14a, 14a, and the two mounting brackets 14, 14 are arranged in parallel to the left and right. The part 13 is integrally fixed by fixing means such as welding or screwing. The interval between the two mounting brackets 14 and 14 is an integral multiple of the interval between the adjacent slots 9 and 9. In the illustrated example, the interval between the mounting brackets 14 and 14 is between the slots 9 and 9. It is formed twice the interval.

The upper edge portion 9a and the lower edge portion 9b of the slot 9 are fitted and locked at positions where the upper end portion and the lower end portion of the mounting bracket 14 face each other (see FIG. 3). A part 16 and a second notch part 17 are formed, and the depth of the first notch part 16 on the upper end side is made deeper than the depth of the second notch part 17 on the lower end part side.
Reference numeral 18 in the drawing is a hole for lightening formed in the left and right side walls 14a, 14a in the vertical direction, but the hole 18 is not necessarily provided.

  Further, in the hollow portion 14c of the mounting bracket 14, a lever member 20 that is rotatable in the front-rear direction of the mounting bracket 14 around a horizontal support shaft 19 spanned between the left and right side walls 14a, 14a. And a spring 21 that urges the lever member 20 so that the upper end of the lever member 20 is inclined toward the rear side of the mounting bracket 14.

  When the step member 10 is attached to the slot 9, the lever member 20 prevents the contact portion 22 from contacting the lower end of the upper edge portion 9a of the slot 9 to prevent the step 10 from moving upward. The upper end of the lever member 20 rotates the lever member 20 when the step 10 is attached / detached, thereby preventing the step 10 from falling off the tilt 5. Is an operating portion 20a for escaping from the lower position of the upper edge portion 9a of the slot 9, and the stepped contact portion 22 is formed at a position below the operating portion 20a.

  The upper end portion of the lever member 20, that is, the operation portion 20 a protrudes above the upper end of the mounting bracket 14, and the contact portion 22 is lower than the upper end of the mounting bracket 14, but the first notch portion 16. It is formed at a position that is higher than the bottom of the.

  The spring 21 is a torsion spring formed of an elastic wire, and is mounted so as to surround the support shaft 19. One end of the spring 21 is locked to the inner surface of the rear end wall 14b of the mounting bracket 14, The other end of the spring 21 is locked to the lever member 20. When the step 10 is not mounted on the tilt 5 by the action of the spring 21, the rear end of the abutting portion 22 is connected to the mounting bracket 14 as shown by a chain line in FIG. 6. It occupies an initial position in contact with the inner surface of the rear end wall 14b.

  The step 12 has a horizontal base 23 in the form of a rectangular plate made of a metal such as iron, stainless steel, and aluminum alloy. The horizontal base 23 is located near the upper end of the vertical base 13. The end portion is fixed by means such as welding, bolting or integral molding and extends sideways and toward the front of step 10, and a tread plate 24 having a non-slip function is fixed to the upper surface of the horizontal base portion 23. Yes. The horizontal base portion 23 and the tread plate 24 are located above the mounting bracket 14. A portion denoted by reference numeral 25 in the drawing is a triangular reinforcing plate fixed to a corner portion where the horizontal base portion 23 and the vertical base portion 13 are continuous.

The tread plate 24 is formed of rubber, synthetic resin, or the like, and has a plurality of anti-slip protrusions 24a having a streak shape or a dot shape on the upper surface, and is fixed to the horizontal base portion 23 with a plurality of bolts 26. Has been. The head of the bolt 26 may or may not protrude from the tread plate 24, but it can also function as an anti-slip by protruding it.
The tread plate 24 can be made of, for example, rubber waste materials such as old tires or plastic waste materials, and by using such waste materials, effective use of resources can be achieved. At the same time, it can help prevent environmental pollution.

  The step 10 is attached to the tilt 5 as follows. First, as shown in FIG. 7, the operation portion 20 a of the lever member 20 in the initial position (chain line position) is moved to the front side of the mounting bracket 14 (vertical base portion 13) with a finger against the urging force of the spring 21. By pushing toward the side, the lever member 20 is rotated from the side surface area of the first cutout portion 16 to the retracted position where the lever portion 20 is completely removed to the front side of the step 10 as indicated by a solid line. Let

  Next, with the lever member 20 held in the retracted position, as shown in FIG. 8, the upper portion of the step 10 is tilted toward the tilt 5 side, and the rear end of the upper end of the mounting bracket 14 is placed in the slot of the rail 8. 9 and the step 10 is lifted up to a position where the upper edge 9a of the slot 9 abuts the bottom of the first notch 16, and the step 10 is straightened up and down as shown in FIG. The posture is set, and the step 10 is lowered in the posture. Then, as shown in FIG. 3, the lower edge portion 9b of the slot 9 is fitted into the second cutout portion 17, and the upper end of the lower edge portion 9b is brought into contact with the bottom portion of the second cutout portion 17, In this state, the lever member 20 is released.

  Then, the lever member 20 is returned toward the initial position by the biasing force of the spring 21, so that the operation portion 20 a at the upper end of the lever member 20 and the rear end wall 16 a of the first notch portion 16 are connected. The upper edge portion 9a of the slot 9 is sandwiched therebetween, and the contact portion 22 of the lever member 20 occupies an operating position located below the upper edge portion 9a of the slot 9, and the attachment of the step 10 is performed. Complete.

  At this time, a force (moment) in the forward and downward direction acts on the step 10 due to the weight of the step 12 that protrudes forward of the step 10 above the mounting bracket 14. It is supported by the rear end wall 16a of the first cutout portion 16 that is engaged with the inner surface of the upper edge portion 9a of the slot 9 and the contact body 15 that is in contact with the lower end portion of the rail 8 or the tilt 5. become.

  By attaching the step 10 to the tilt 5 in this way, the operator can easily get on and off the loading platform 2 using the stepping plate 24 of the step 10 as a foothold. At this time, the load acting on the step 10 is supported by the rear end wall 16a of the first cutout portion 16 and the contact body 15 as described above. Even when the lower end of the slot 9 does not come into contact with the tilt 5, the front end wall 17a of the second notch 17 is locked to the outer surface of the lower edge 9b of the slot 9 instead of the corresponding contact 15. The load is supported. Therefore, the contact body 15 can be omitted.

  Further, when an upward external force is applied to the step 10, the contact portion 22 of the lever member 20 is locked to the lower end of the upper edge portion 9 a of the slot 9 and the upward movement of the step 10 is performed. Therefore, the step 10 does not come out of the slot 9, so that the safety is excellent.

When the step 10 is removed after the loading / unloading of the parcel has been completed, the removal may be performed according to the reverse procedure of the step 10 attachment. The removed step 10 can be stored and transported in a suitable place on the loading platform 2.
Further, the step 10 can be commonly used for other trucks to which the rails 8 are attached.

  In the illustrated embodiment, the mounting bracket 14 is formed by bending a metal plate into a U shape. However, the mounting bracket 14 may have a flat plate shape, or the flat plate mounting portion. A pivot area of the lever member 20 is defined on a side surface of the metal fitting 14 by a protrusion by cutting and raising, a pin attached to the side surface, and the like, and the lever member 20 is attached to the attachment metal fitting so as to rotate within the rotation area. The structure attached to 14 may be sufficient.

  In addition, the step 10 may include a rail similar to the rail 8 within the tilt, even if it is a normal freight vehicle other than the wing body vehicle, in which the rail for attaching the load collapse prevention belt is not attached in advance. By attaching it to the required position on the side, it can be used by attaching it to the tilt.

  FIGS. 10 and 11 show a main part of a modified example of the step according to the present invention. In this step 10, instead of providing the lever member 20 having the abutting part 22, the rear part of the first notch part 16 is provided. A projecting wall 16c is formed on a part of the end wall 16a so as to project toward the front end wall 16b side of the first notch 16 in the direction of narrowing the width of the first notch 16, and the projecting wall 16c. The abutting portion 22 is formed on the step portion at the upper end of the rim. Accordingly, the height of the overhanging wall 16c is lower than the depth of the first notch 16, and when the step 10 is attached to the rail 8, the overhanging wall 16c is below the upper edge 9a of the slot 9. The height is such that it is located.

  In this way, when the step 10 is attached to the rail 8, the step 10 is naturally lowered by the weight of the step 12 protruding forward of the step 10, and the overhanging wall 16c Since the contact portion 22 is located below the upper edge portion 9a of the slot 9, the contact portion 22 prevents the step 10 from being displaced upward. In particular, since the step 12 is provided at a position above the mounting bracket 14, the forwardly lowered posture of step 10 becomes more prominent.

  In the illustrated embodiment, the abutting portion 22 is provided on the lever member 20, the rear end wall 16a of the first notch portion 16, and the like. However, since the weight of the step 10 is considerably large and the weight of the operator is further added when used as a scaffold, the slot 9 can be applied even if a slight external force or vibration is applied. There is little possibility that it will be displaced upwards so that it will remove from. Therefore, in consideration of this point, it is not always necessary to provide the contact portion 22 as described above. That is, the lever member 20 and the overhanging wall 16c can be omitted.

  In the illustrated embodiment, the vertical base portion 13 and the horizontal base portion 23 have a plate shape, but the vertical base portion 13 and the horizontal base portion 23 are formed into a frame shape by combining channel materials and the like. It can also be formed.

DESCRIPTION OF SYMBOLS 1 Lorry vehicle 2 Carriage 5 Carriage 7 Wing roof 9 Slot 10 Step 11 Mounting part 12 Step part 13 Vertical base part 14 Mounting bracket 16 1st notch part 16a Rear end wall 16b Front end wall 16c Overhang wall 17 2nd notch part 20 Lever Member 20a Operation part 21 Spring 22 Contact part 23 Horizontal base part 24 Footboard

Claims (7)

A detachable step that is used by being attached to a slot provided in a tilt of a loading platform of a lorry vehicle, the step including an attaching portion for attaching to the slot, and a step portion for making a scaffold,
The mounting portion has a plurality of mounting brackets that are inserted into the slot and locked therein, and the upper and lower edges of the slot are fitted to the upper end portion and the lower end portion of the mounting bracket. A concave first notch and a second notch are formed, and the depth of the first notch on the upper end side is deeper than the depth of the second notch on the lower end side,
A detachable step for a truck. The mounting portion has a vertical base portion extending vertically, and the two vertical mounting portions are provided so that the two mounting brackets are parallel to each other.
The step part has a horizontal base part extending laterally from the vertical base part, and a step board having a non-slip function is attached to the horizontal base part.
The detachable step according to claim 1.   The detachable step according to claim 2, wherein the tread plate is attached at a position above the attachment bracket.   2. The mounting bracket is provided with a contact portion that contacts a lower edge portion of the slot when the step is attached to the slot and prevents the step from being displaced upward. The removable step according to any one of 1 to 3. The mounting bracket is provided with a lever member that is rotatable in the front-rear direction of the step, and a spring that biases the lever member so that the upper end side is inclined toward the rear side of the step,
The lever member is formed with an operation portion for rotating the lever member against the biasing force of the spring, and the contact portion.
The detachable step according to claim 4.   The upper end portion of the lever member extends upward from the upper end of the mounting bracket, the operation portion is formed at the upper end portion of the lever member, and the contact portion of the lever member is lower than the upper end of the mounting bracket. However, the detachable step according to claim 5, wherein the detachable step is formed at a position higher than the bottom of the first cutout.   A projecting wall having a lower height than the rear end wall is formed on the rear end wall of the first notch so as to project toward the front end wall of the first notch, and the upper end of the projecting wall The detachable step according to claim 4, wherein the abutting portion is formed on the detachable step.

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