JPH0532139A - Controller accommodating structure of battery-operated fork lift - Google Patents

Abstract

PURPOSE:To provide the above controller accommodating structure which can set the distance of the controller mounting surface from the plane with the weight open end so as to be constant regardless of differing size of car. CONSTITUTION:A controller is accommodated in a cavity 4 formed in a balance weight 3 at the rear of a car body, wherein the controller 7 and a case 9 enclosing it are fixed to a frame back plate 2, which is located at the facade of the balance weight 3, through a sub-weight 5 in plate form functioning also as a spacer. When the fore-and-aft length of this balance weight has varied due to differing size of car, the distance of the controller mounting surface from the plane with the weight open end can be set constant by giving the sub-weight 5 a wall thickness in compliance with the fore-and-aft length. At the open end of the controller case 9, a rear cover 12 is installed by bolt 14 so as to be blocking both of the case opening and the weight opening.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for accommodating various controllers for traveling, cargo handling, etc. in a balance weight mounted on the rear part of a vehicle body.

[0002]

2. Description of the Related Art FIG. 4 shows a battery forklift of a type in which a controller is stored in a conventional balance weight. As shown in the figure, the balance weight 31 mounted on the rear part of the vehicle body is formed with a cavity 32 for storing the controller, which penetrates in the front-rear direction. Controller 3
A rectangular cylindrical controller case 36 covering the controller 4 and the controller 34 is fixed to the base plate 35 with bolts, and a case cover 37 is fixed to the rear opening of the controller case 36 with bolts. And
The base plate 35 is fixed to the frame back plate 33 located on the front surface of the balance weight 31 with bolts. That is, the controller-related parts are mounted with the frame back plate 33 as a mounting surface, and are stored in the cavity 32 of the balance weight 31. The opening of the balance weight 31 is closed by a rear cover 38 which is attached by a bolt to a tap hole formed along the periphery of the opening. Forklifts of the type in which the controller is stored in the balance weight as described above include, for example, Japanese Utility Model Publication No. 48-48364 and Japanese Utility Model Publication No. 55-161740.

[0003]

By the way, in the forklift, if the vehicle grade is different, the dimension in the front-rear direction will be different due to the difference in wall thickness of the balance weight 31. For example, in the case of a 3 ton vehicle, the size becomes larger than that of a 1 ton vehicle. On the other hand, the controller-related parts have common specifications. Therefore, as described above, in the conventional structure in which the frame back plate 33 is the controller mounting surface, the larger the vehicle class, the larger the distance from the weight opening end surface to the controller mounting surface.
As a result, controller-related parts have balance weight 3
It is stored away from the opening end face of No. 1, that is, in a recessed position. As a result, there is a problem that maintenance work of the controller 34 performed from the weight opening becomes difficult. Further, since the distance from the weight opening end surface to the controller mounting surface varies depending on the vehicle grade as described above, the openings of the controller case 36 and the balance weight 31 are individually covered by the covers 37, 3.
8 must be provided, so during maintenance,
There is the annoyance that the two covers 37, 38 must be removed.

In view of the above problems, the present invention provides a controller storage structure for a battery forklift truck that can set a constant distance from the weight opening end surface to the controller mounting surface regardless of the difference in vehicle class. This is a technical problem to be solved, and further, unifying the weight opening and the cover closing the case opening is a technical problem to be solved.

[0005]

In order to solve the above problems, the present invention is configured as follows. That is, the invention according to claim 1 is a controller storing structure for storing a controller in a cavity formed by penetrating in a front-rear direction in a balance weight at a rear portion of a vehicle body, and a frame back plate located in front of the balance weight. On the other hand, the controller and the controller case that covers the controller are fixed by interposing a plate-shaped sub-weight.

According to a second aspect of the present invention, there is provided a controller storage structure for storing a controller in a cavity formed by penetrating in a balance weight at a rear portion of a vehicle body in a front-rear direction, the controller storage structure being located in front of the balance weight. The controller and the controller case that covers the controller are fixed to the frame back plate with a plate-shaped sub-weight interposed, and an outer peripheral edge portion of the balance weight of the balance weight is provided at the rear opening end of the controller case. It is characterized in that a rear cover having a seal portion that can be brought into contact with the peripheral portion of the weight opening and that can be brought into contact with the end face of the case opening is attached to the inner peripheral side of the outer peripheral portion with bolts.

[0007]

In the controller storing structure according to the invention of claim 1 configured as described above, the sub-weight acts not only as a weight member but also as a spacer, and by changing its wall thickness. The position of the controller mounting surface can be changed freely. That is,
Even if the size of the balance weight in the front-rear direction varies depending on the vehicle grade, by installing a sub-weight with a corresponding thickness on the frame back plate, the distance from the weight opening end face to the controller mounting face can be adjusted to the vehicle grade. It can be set to a constant value regardless of the difference.

In the controller storage structure according to the second aspect of the present invention, as described above, the distance from the weight opening end face to the controller mounting face can be set constant regardless of the difference in vehicle class. In addition, the weight opening and the case opening can be closed by one cover.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a mode in which the controller is stored in the balance weight 3, FIG. 2 shows a mode before the controller is assembled, and FIG. 3 is an explanatory diagram for explaining how to deal with the case where the vehicle grade is different. .

As shown in FIG. 1, a rectangular frame back plate 2 is erected on the rear portion of the vehicle body frame 1, and a balance weight 3 is mounted on the back side of the frame back plate 2. The balance weight 3 is provided with a rectangular hollow portion 4 that penetrates in the front-rear direction for storing the controller, and is actually mounted on the vehicle body after the controller is assembled.

On the back surface of the frame back plate 2, a sub-weight 5 formed in a rectangular plate shape is fixed at its peripheral edge portion by a suitable number of bolts 6. In this case, in order to fit the sub-weight 5 in the cavity portion 4 of the balance weight 3, the sub-weight 5 is formed smaller than the cavity portion 3 or the sub-weight 5 of the cavity portion 4 is positioned. It is appropriately selected whether only the portion to be formed is wide.

Therefore, the sub-weight 5 has a structure shown in FIG.
Further, as shown in FIG. 2, a rectangular base plate 8 to which the controller 7 is attached and a controller case 9 formed in a rectangular tube shape to open the front and back to cover the controller 7 are bolted at their peripheral portions. 10, 1
Attached by 1. That is, the sub-weight 5 has both a function as a weight member and a function as a spacer, and the back surface of the sub-weight 5 serves as an actual mounting surface of the controller 7 and the controller case 9. The controller case 9 has a mounting flange 9a on the outer circumference of the front end thereof, and the mounting flange 9a is mounted on the sub-weight 5.

A rear cover 12 is attached to the rear end surface of the controller case 9 with two right and left bolts 14. The rear cover 12 is a substantially rectangular plate having an upright surface whose outer peripheral edge abuts on a step surface of the weight opening peripheral portion of the balance weight 3, and the controller case is provided on the inner peripheral side. It has a square-shaped seal portion 13 which can be brought into contact with the opening end surface of 9. That is, the rear cover 12 has the outer peripheral edge thereof in contact with the step surface of the peripheral edge portion of the weight opening, and the seal portion 13 on the inner peripheral side.
Is set so as to contact the end face of the case opening,
In this abutting state, the left and right two bolts 14 are fastened to the nut member 15 provided on the end face of the case in an inwardly projecting manner to be attached, and both the weight opening and the case opening are closed. . The curved shape of the rear cover 12 corresponds to the outer shape of the rear surface of the balance weight 3.

The controller storage structure of this embodiment is constructed as described above. Therefore, when the dimension of the balance weight 3 in the front-rear direction changes due to the difference in vehicle class,
This is dealt with by using subweights 5 having different wall thicknesses.
That is, as shown in FIG. 3, for example, when the front-back dimension of the balance weight 3 of a 1-ton vehicle is a large solid line in the figure, but in the case of a 3-ton vehicle, the sub-weight 5 is For a 1-ton vehicle, the thickness shown by the solid line is used, and for a 3-ton vehicle, the thickness is increased by the increase of the balance weight 3 as shown by the phantom line. Correspond.

By taking such measures, the distance from the opening end face of the balance weight 1 to the controller mounting face, that is, the controller 7 and the controller case 9
It is possible to set the distance to the sub-weight 5, which is a substantial mounting surface of the vehicle, to a constant value regardless of the difference in vehicle class. When the above-mentioned constant distance is achieved, the distance from the step surface at the peripheral portion of the weight opening to the end surface of the case opening is also constant, so that the rear cover 12 has the same size regardless of the vehicle class. Can be used.

[0016]

As described in detail above, according to the present invention,
Since the distance from the end face of the weight opening to the controller mounting surface can be set to a constant value regardless of the vehicle class, maintenance work for the controller is facilitated and controller-related parts including the rear cover are It is possible to use the exact same thing regardless of the difference. Further, in the present invention, since the weight opening and the case opening can be closed by one cover,
It is possible to reduce the time and effort required to remove and attach the cover during maintenance. Furthermore, in the conventional controller storage structure in which the rear cover is attached to the balance weight with bolts, it is necessary to perform tapping according to the current situation on the assembly line, and such tapping due to the current situation is inefficient. Moreover, since it is processing for a heavy object called a balance weight, it is not preferable in terms of safety work, but according to the present invention, the cover is attached to the controller case side. It is possible to eliminate such a defect.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a controller storage structure according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state before assembly.

FIG. 3 is an explanatory diagram for explaining how to deal with a case where vehicle grades are different.

FIG. 4 is an exploded perspective view showing a conventional controller storage structure.

[Explanation of symbols]

1 ... Body frame 2 ... Frame back plate 3 ... Balance weight 4 ... Cavity 5 ... Sub weight 7 ... Controller 8 ... Base plate 9 ... Controller case 12 ... Rear cover

Claims (2)

[Claims] 1. A controller storing structure for storing a controller in a cavity formed by penetrating in a front-rear direction in a balance weight at a rear portion of a vehicle body, the controller storing structure for a frame back plate located in front of the balance weight. A controller storage structure for a battery forklift in which a controller case that covers the controller is fixed with a plate-shaped sub-weight interposed. 2. A rear edge of the controller case has an outer peripheral edge portion capable of contacting a weight opening peripheral edge portion of the balance weight, and an inner peripheral side of the outer peripheral edge portion contacts the case opening end surface. The controller storage structure for a battery forklift according to claim 1, wherein a rear cover having a seal portion capable of contacting is attached by a bolt.