JPH0625012U - Industrial vehicle steel cab door equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a door device that can be easily opened and closed by an operator in a forklift or the like that adopts an open step, has a large foot space to improve workability, and can be opened and closed even in a narrow place. [Structure] A box-shaped protrusion 6 is formed inside the door 2 at a position overlapping the open step 4, the upper surface of the box-shaped protrusion 6 is aligned with the floor surface of the driver's seat, and the entire shape of the vehicle body side frame 11 is almost the same. The elliptical door 2 is pivotally attached 7 rotatably slightly below the center of the rear end frame 2 ₂ thereof, and the turning fulcrum 7 is provided along the end face of a substantially inverted U-shaped guide frame 8 attached to the vehicle body side frame 11. The door 2 is opened and closed by rotating the door 2 in the front-back direction of the vehicle.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a steel cab door device that is installed in industrial vehicles such as forklift trucks and shovel loaders, and particularly a steel cab door that adopts an open step (a step that makes it easier to get on and off by notching the upper part of the frame). It is suitable for use in.

[0002]

[Prior art]

 A typical one of conventional doors of this type is shown in FIGS. Figure 1 shows the door closed and Figure 2 shows the door open. In these figures, a is a steel cab, b is a door, c is a rotary hinge provided at several places (three in the figure) behind the door b, d is a floor plate, e is a frame, and f is an open step. . The door b attached to the steel cab a is rotated outward as shown in FIG. 2 by the hinge c for rotation. Although the above is an example of the outward rotation method, it is also common to move the door in the front-rear direction of the vehicle.

[0003]

[Problems to be solved by the device]

 With the so-called open-door type, which opens and closes the door by rotating the door outwardly around the above-mentioned rotary hinge, the door space is reduced when there is a vehicle between loads in a narrow passage. Since it is not possible to obtain enough, it may interfere with the getting on and off of the operator.

Regarding this point, the method of sliding the door in the front and rear of the vehicle is less likely to cause such trouble, but has a problem as described below. That is, recently, forklift trucks and the like often employ an open step with a cut-out portion as described above in order to improve the operator's entry / exitability. Since such an open step is highly visible, has high safety, and is easy to get on and off, it has recently been rapidly adopted especially for small forklift trucks, but the frame was notched. Since it is formed in a shape, the floor plate can occupy a space corresponding to the size of the step, so that it is a constraint for the operator to sit in the driver's seat and perform various tasks and operations in order to narrow the space under the operator's feet. There is a problem in that it is cramped and easily fatigued.

Therefore, the present applicant previously proposed Japanese Utility Model Application No. 61-49819 (Japanese Utility Model Application Laid-Open No. 62-162118), in which a box-shaped projection is provided inside the door of the outside opening type, and a box-shaped projection is provided when the door is opened and closed. The protrusion fits into the open step, the upper surface of the box-shaped protrusion is aligned with the upper surface of the floor plate, and the upper surface is used as a rest space for the operator's feet. The effect was greatly improved by reducing fatigue. However, the above-mentioned problems of the outward opening method have not been solved yet.

Further, in the case of the front-rear slide type, if the box-shaped projection as described above is provided, it becomes extremely difficult to slide the door, and it is practically impossible to provide such a projection. It is an object of the present invention to solve the above-mentioned problems and to provide an appropriate door device for use in a door opening / closing device of an open-step forklift truck.

[0007]

[Means for Solving the Problems]

 The present invention has been made in view of the above points, and a box-shaped projection is formed inside the door at a position overlapping the open step, and the upper surface of the box-shaped projection is aligned with the floor surface of the driver's seat. In the fork truck, the door is pivotally attached to the vehicle body side frame at a position slightly lower than the center of the rear end frame of the door having a substantially oval or oval shape, and the door is attached to the frame on the vehicle body side surface. The door is opened and closed by rotating the door forward or rearward of the vehicle with the pivot point as the fulcrum along the end face of the shaped guide frame, and the door does not interfere with the box-shaped protrusion inside the door. This enables smooth opening and closing of the vehicle, maintains the characteristics of the open step function, and is intended to ease the operator's entry and exit and reduce fatigue.

[0008]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a schematic view when the door is closed according to an embodiment of the present invention, and FIG. 4 shows a state in which the door is also opened. In these figures, 1 is a steel cab, 2 is a door, 3 is a floor plate, 4 is an open step, and 5 is a frame. 6 is a box-shaped protrusion formed inside the door 2 and is shown by a dotted line because it is not visible from the outside. The box-shaped projection 6 has a shape as shown in Japanese Utility Model Laid-Open No. 62-162118.

That is, a box-shaped projection 6 is formed inside the door 2 so as to fit with the open step 4 when the door is closed, and the upper surface of the box-shaped projection 6 is the surface of the floor plate 3 of the driver's seat. To match. Therefore, when the door 2 is closed, the box-shaped projection 6 is fitted into the open step 4, and the upper surface of the box-shaped projection 6 coincides with the surface of the floor plate 3. Therefore, if the floor mat is attached to the upper surface of the box-shaped projection 6, It can be used as a rest space for your feet.

The embodiment of the present invention is characterized by the following points. That door 2 is formed the entire shape substantially elliptical or oval, it is pivoted slightly Te below the fulcrum 7 smell from the center of the rear frame 2 ₂ of the door 2 relative to the vehicle body side frame 10, the entire door Reference numeral 2 designates a fulcrum such that the fulcrum 7 can be rotated from the state shown in FIG. 3 to the state shown in FIG. 4 along the end face of a substantially inverted U-shaped guide frame 8 mounted on the vehicle body side frame 10. The point is that the box-shaped projection 6 provided inside the door 2 does not hinder the opening and closing of the door.

Reference numeral 9 denotes a slide type guide in which the upper end edge of the guide frame 8 is formed in a substantially arcuate shape, and has an arcuate shape that forms a substantially radial orbit around the rotation fulcrum 7. 11 one end 12 fixed to the lower portion of the front frame 2 ₁ of the door 2, the roller 13 is provided at the other end, the roller 13 as shown in FIGS. 5 and 6, the arcuate provided on the cab frame slide A guide lever that fits into the concave groove of the guide 9 and guides and connects the door 2 along the guide 9, so that the door 2 can be rotated forward or backward of the vehicle to smoothly open and close the door. It has an auxiliary function. The guide lever 11 may be provided if necessary, and the door can be opened and closed in an arc shape without it. Reference numeral 14 is a door handle, and 15 is a horizontal frame of the door.

[0012]

[Effect of device]

 Since the present invention is configured as described above in detail, the box-shaped protrusion formed inside the door is fitted into the open step when the door is closed, and the upper surface of the box-shaped protrusion is aligned with the upper surface of the floor plate. The upper surface can be used as a rest space for the operator's feet, and when the operator sits in the driver's seat to perform various tasks and operations, the operator's feet are widened, and the conventional feeling of fatigue is significantly reduced. In particular, in this invention, since the door can be rotated forward or backward of the vehicle around the pivot, the box-shaped protrusion provided inside the door does not hinder the opening and closing of the door, and the door is outside. Since it is not an opening method, the door can be freely opened and closed even in a narrow space, so there is no effect on the operator getting on and off, and the characteristics of the open step can be fully maintained, improving work efficiency.

[Brief description of drawings]

FIG. 1 shows an example of a door device according to the related art, which is in a closed state.

FIG. 2 shows the same device as in FIG. 1 in the open position.

FIG. 3 is a perspective view showing a closed state of a door device according to an embodiment of the present invention.

FIG. 4 is a perspective view showing an opened state of the door device.

5 is a partially enlarged view of the door shown in FIG. 4 as viewed from the inside.

FIG. 6 is an explanatory view showing details of a slide type guide, which is shown in a side section of a guide portion.

[Explanation of symbols]

2 Door 2 ₂ Rear end frame 3 Floor surface 4 Open step step 6 Box-shaped protrusion 7 Rotation fulcrum 8 Guide frame 9 Bow-shaped guide

Claims (2)

[Scope of utility model registration request] 1. A forklift truck in which a box-shaped projection 6 is formed at a position overlapping the open step 4 inside the door 2 and an upper surface of the box-shaped projection 6 is aligned with a floor surface 3 of a driver's seat. substantially the door 2 slightly below the center of the rear frame 2 ₂ forms approximately elliptical or oval door 2 pivotally hinged 7 to the vehicle body side frame 11, attached to the vehicle body side frame 11 The door 2 is opened and closed by rotating the door 2 forward or rearward of the vehicle around the rotation fulcrum 7 along the end face of the inverted U-shaped guide frame 8. Vehicle cab door device. 2. A bow-shaped guide 9 is formed on an upper end surface of the guide frame 8, and the guide 9 has an end surface formed in an arc shape having substantially the same radius about a rotation fulcrum 7. The steel cab door device according to claim 1.