JPH0730413Y2 - Drainage structure for battery-powered industrial vehicles - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a drainage structure for a battery-powered industrial vehicle, and more particularly to a drainage structure in a battery case and a case storage chamber formed in a vehicle body frame.

(Prior Art) Generally, in an industrial vehicle such as a forklift that uses a battery as a power source, in order to drain water accumulated in a battery case or a case storage chamber by washing the battery or dew condensation caused by use in a freezer. It has a drainage structure. As a structure for draining water from a battery case, there is, for example, Japanese Utility Model Laid-Open No. 60-78618. This is such that the drainage holes are concentrically formed through the bottom plate of the battery case and the frame bottom plate that constitutes the bottom plate of the case storage chamber, and both drainage holes are connected via a guide tube made of an elastic body. By doing so, the water in the battery case is discharged to the outside of the vehicle. Further, the water accumulated in the case storage chamber is drained from a drain hole different from the drain hole formed in the frame bottom plate.

(Problems to be Solved by the Invention) As described above, in the conventional water draining structure, the frame bottom plate is provided with two types of water draining holes, a battery case water draining hole and a case storage chamber water draining hole. Inevitably, the number of holes increases and the cost increases, and in particular, when it rains, on the contrary, muddy water enters the case storage chamber through the water drain holes.

Therefore, an object of the present invention is to provide a drainage structure for a battery-powered industrial vehicle that has been improved to eliminate the above-mentioned problems.

(Means for Solving the Problems) In order to solve the above problems, the present invention is directed to a battery-type industrial vehicle in which a battery case is mounted on a frame bottom plate of a vehicle body frame at a predetermined interval. A cylinder in which the bottom plate is provided with a water drain hole, and the frame bottom plate is provided with a water drain hole at a portion facing the water drain hole of the case bottom plate, and these both water drain holes are fixed to the frame bottom plate side. -Shaped guide and an elastic cylindrical body that fits in the cylindrical guide and whose upper end surface is in close contact with the lower surface of the case bottom plate are connected to each other, and the drain hole of the frame bottom plate is formed larger than the outer shape of the cylindrical guide. At the same time, the gist is that the tubular guide is fitted in the drain hole so as to form a drain opening having a predetermined size between the drain hole and the tubular guide.

(Operation) According to the drainage structure configured as described above, the water in the battery case is discharged from the drainage hole of the case bottom plate to the outside of the vehicle through the elastic cylindrical body, the tubular guide and the drainage hole of the frame bottom plate. The water in the case storage chamber can be discharged to the outside of the vehicle through an opening for draining water formed between the frame bottom plate and the tubular guide.

(Embodiment) An embodiment of the present invention will be specifically described below with reference to the drawings. FIG. 6 shows an outline of a battery-powered forklift truck, in which a battery case 2 is housed in approximately the center of a vehicle body 1. As shown in FIG. 1, the case storage chamber 3 is formed in a box shape surrounded by a side frame 4 of the vehicle body 1, a frame bottom plate 5, and front and rear plates (not shown) to accommodate a battery (not shown). The battery case 2 is mounted on the pedestal 6 on the frame bottom plate 5 at a predetermined interval.

A circular drainage hole 7 is formed in the case bottom plate 2a of the battery case 2, and a square drainage hole 8 is formed in the frame bottom plate 5 of the case storage chamber 3 so as to face each other. The drainage holes 7 and 8 are connected to each other through a tubular guide 9 fixed to the frame bottom plate 5 side and an elastic tubular body 10 which is fitted into the tubular guide 9 and whose upper end surface is in close contact with the lower surface of the case bottom plate 2a. There is. That is, the elastic cylindrical body 10 with a flange for drainage, which is made of a flexible elastic material such as rubber or synthetic resin, has its lower part fitted in the cylindrical guide 9, and the battery case 2 is stored in the case storage chamber 3. In the housed state, the cylindrical hole is aligned with the drainage hole 7 on the case bottom plate 2a side, and the upper surface is elastically brought into close contact with the lower surface of the case bottom plate 2a. The fitting length of the elastic tubular body 10 with respect to the tubular guide 9 is appropriately set, and it is not limited to the state shown in the drawing and may be penetrated from the tubular guide 9 if necessary.

On the other hand, the drainage hole 8 on the frame bottom plate 5 side is square and is formed to be considerably larger than the drainage hole 7 on the case bottom plate 2a side, and the tubular guide 9 is attached to this drainage hole 8. There is. That is, the cylindrical guide 9 is fixed to the frame bottom plate 5 by welding at the inscribed portion in a state where the outer peripheral surface of the lower end portion is inscribed so as to be inscribed in each side of the square drainage hole 8. 4 for drain hole 8
A substantially triangular opening 11 is formed in each corner between the outer peripheral surface of the cylindrical guide 9 and the opening 11 functions to drain the case storage chamber 3.

Therefore, at the time of cleaning or the like, the water in the battery case 2 is discharged from the drain hole 7 of the case bottom plate 2a to the lower side of the frame bottom plate 5 through the elastic cylindrical body 10 and the cylindrical guide 9, while the inside of the case storage chamber 3 Water of the frame passes through the opening 11 and the frame bottom plate 5
Is discharged below. In addition, the dew condensation water on the outer wall surface of the battery case 2 is thawed into water after melting from the freezer and drops into the case storage chamber 3 due to the cargo handling work in the freezer. Since it flows down along the outer peripheral surface of the cylindrical guide 9 and the outer peripheral surface of the tubular guide 9, it is effectively discharged to the outside of the vehicle through the opening 11 formed in the outer peripheral portion of the cylindrical guide 9. And, if the case bottom plate 2a
Even if water leaks between the elastic cylindrical body 10 and the elastic cylindrical body 10, the water also flows down along the outer peripheral surface of the elastic cylindrical body 10 and the outer peripheral surface of the cylindrical guide 9, and is smoothly discharged from the opening 11 to the outside of the vehicle. To be done.
In addition, in order to improve drainage, it is desirable that the case bottom plate 2a and the frame bottom plate 5 be formed so as to have a slightly downward slope toward the drain holes 7 and 8, respectively.

The tubular guide 9 can be attached to the frame bottom plate 5 by, for example, forming the water draining hole 8 into a round hole as shown in FIG. Alternatively, as shown in FIG. 4 and FIG. 5, both the drainage hole 8 and the tubular guide 9 are formed in a circular shape, and the tubular guide 9 is inserted through an appropriate bridging member 12. It is also possible to form the opening 11 for draining water even if the opening 11 is connected to the frame bottom plate 5.

(Effects of the Invention) As described in detail above, the present invention is designed to drain water inside the battery case and inside the case storage chamber by using a common drain hole formed in the frame bottom plate. ,
There is no need to open extra holes as in the conventional case, which is advantageous in cost. In addition, since water leaking from the water drain hole of the battery case or condensed water generated on the outer wall surface of the case has a strong tendency to drip along the elastic cylindrical body and the cylindrical guide, an opening for drainage of the case storage chamber should be provided. By forming it between the outer periphery of the cylindrical guide and the frame bottom plate, the water can be effectively discharged. Further, since the drainage opening formed in the frame bottom plate is divided into a plurality of parts, it is possible to reduce the area of each opening, so that muddy water splashed up during traveling can enter the case storage chamber. It is also effective in preventing it.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front sectional view showing a drainage structure of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIGS. 3 and 4 are cylindrical guides, respectively. FIG. 5 is a plan view showing a modified example of the mounting structure of FIG. 5, FIG. 5 is a sectional view taken along line VV of FIG. 4, and FIG. 6 is a schematic side view of a battery-powered forklift. 2 ... Battery case, 2a ... Case bottom plate 4 ... Side frame, 5 ... Frame bottom plate 7,8 ... Drainage hole, 9 ... Cylindrical guide 10 ... Elastic cylinder, 11 ... Opening part

Claims (1)

[Scope of utility model registration request] 1. In a battery-powered industrial vehicle in which a battery case is placed on a frame bottom plate of a vehicle body frame at a predetermined interval, a drain hole is formed through the case bottom plate of the battery case, and the frame bottom plate is provided. Is a cylindrical guide having a water draining hole penetrating at a position facing the water draining hole of the case bottom plate, and fixing both of these water draining holes to the frame bottom plate side, and a top end face fitted to the cylindrical guide. The bottom of the bottom plate is connected to the bottom of the frame through an elastic cylinder, and the frame bottom plate is formed with a water draining hole larger than the outer shape of the tubular guide, and between the water draining hole and the tubular guide. A drainage structure for a battery-powered industrial vehicle in which a tubular guide is fitted in the drainage hole so as to form a drainage opening of a predetermined size.