JP3151869B2 - Battery forklift controller storage structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art FIG. 4 shows a conventional battery forklift in which a controller is stored in a balance weight. As shown in the drawing, a hollow portion 32 for storing a controller is formed in a balance weight 31 mounted on a rear portion of the vehicle body and penetrates in a front-rear direction. Controller 3
4 and a rectangular cylindrical controller case 36 that covers the controller 34 are respectively 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 hollow portion 32 of the balance weight 31. Note that the opening of the balance weight 31 is closed by a rear cover 38 attached to a tapped hole formed along the periphery of the opening with a bolt. Forklifts of the type in which the controller is stored in the balance weight as described above include, for example, Japanese Utility Model Laid-Open No. 48-48364 and Japanese Utility Model Laid-Open No. 55-161740.

[0003]

In a forklift, if the vehicle size is different, the size of the balance weight 31 in the front-rear direction is different due to the difference in thickness. For example, in the case of a three-ton vehicle compared to a one-ton vehicle, the above-described size becomes larger. In contrast, controller-related parts have common specifications. Therefore, as described above, in the conventional structure using the frame back plate 33 as the controller mounting surface, as the vehicle size increases, the distance from the weight opening end surface to the controller mounting surface increases,
Along with that, the controller related parts have balance weight 3
1 is stored away from the end face of the opening, that is, in a deep position. As a result, there is a problem that maintenance work of the controller 34 performed through the weight opening becomes difficult. As described above, since the distance from the end face of the weight opening to the controller mounting surface varies depending on the vehicle size, the openings of the controller case 36 and the balance weight 31 are individually provided with the covers 37 and 3.
8 must be provided, so at the time of maintenance,
There is an annoyance that the two covers 37 and 38 must be detached.

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

[0005]

To achieve the above object, the present invention is configured as follows. That is, according to the invention of claim 1, a controller storage structure for storing the controller to the vehicle body rear portion of the balance weight in the longitudinal direction are formed through the hollow portion, the controlling
The roller is positioned at the front of the balance weight.
It is characterized in that it is configured to be fixed to the arm back plate with a plate-shaped sub-weight interposed.

[0006] The invention of claim 2 is based on claim 1.
Battery forklift controller storage structure
The controller case that covers the controller
The outer peripheral edge of the controller case can be in contact with the weight opening peripheral edge of the balance weight at the rear open end of the controller case , and the inner peripheral side of the outer peripheral edge can be in contact with the case opening end surface. It is characterized in that a rear cover provided with a suitable seal portion is attached by bolts.

[0007]

According to the first aspect of the present invention, there is provided the present invention.
According to the controller storage structure of the battery forklift
For example, the sub-weight functions not only as a weight member but also as a spacer, and by changing its thickness, the position of the controller mounting surface can be freely changed. In other words, even if the size of the balance weight in the front-rear direction is different based on the difference in vehicle size, the distance from the weight opening end surface to the controller mounting surface can be reduced by attaching a subweight having a corresponding thickness to the frame back plate. It can be set to a constant value regardless of the difference in vehicle grade. The present invention also provides a
The controller is mounted on the back plate,
With the balance weight attached to the
Detachable work of balance weight because it can be detached
Business efficiency can be improved.

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

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 shows a mode in which a 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 a case where the vehicle size is different. .

As shown in FIG. 1, a rectangular frame back plate 2 is provided upright at the rear of the 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 cavity 4 for storing the controller, which penetrates in the front-rear direction, and is actually mounted on the vehicle body after the controller is assembled.

A sub-weight 5 formed in the shape of a rectangular plate is fixed to the back of the frame back plate 2 at its periphery by an appropriate number of bolts 6. In this case, in order to make the sub-weight 5 fit in the cavity 4 of the balance weight 3, the sub-weight 5 is formed smaller than the cavity 3 or the sub-weight 5 of the cavity 4 is positioned. It is appropriately selected whether only the part to be formed is widened.

However, the sub-weight 5 has the structure shown in FIG.
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 cylindrical shape with front and rear openings for covering the controller 7 are respectively bolted at their peripheral edges. 10,1
1 attached. That is, the sub-weight 5 has a function as a spacer in addition to the function as a weight member, and the back surface serves as an actual mounting surface of the controller 7 and the controller case 9. The controller case 9 has a mounting flange 9 a on the outer periphery of the front end thereof, and the mounting flange 9 a is mounted on the sub-weight 5.

A rear cover 12 is attached to the rear end face of the controller case 9 by two right and left bolts 14. The rear cover 12 is a substantially rectangular plate having an upright surface whose width is such that an outer peripheral edge thereof abuts on a step surface of a peripheral edge portion of the weight opening of the balance weight 3. 9 has a rectangular seal portion 13 that can abut on the opening end face. That is, the rear cover 12 has the outer peripheral edge abutting against the step surface of the peripheral edge of the weight opening, and the seal portion 13 on the inner peripheral side.
Is set to abut the case opening end face,
In this contact state, two bolts 14 on the left and right sides are attached by fastening to a nut member 15 provided on the end face of the case so as to protrude, so that both the weight opening and the case opening are closed. . Note that the curved shape of the rear cover 12 is for conforming to the rear outer shape of the balance weight 3.

The controller storage structure of this embodiment is constructed as described above. Therefore, when the size of the balance weight 3 in the front-rear direction changes due to the difference in vehicle size,
This is achieved by using sub-weights 5 having different wall thicknesses.
That is, as shown in FIG. 3, for example, when the front-rear dimension of the balance weight 3 of the 1-ton vehicle is large in the illustrated solid line, but in the case of the 3-ton vehicle, the sub-weight 5 becomes For a 1-ton vehicle, the thickness indicated by the solid line in the figure is used, and for a 3-ton vehicle, an object whose thickness is increased by the increase of the balance weight 3 as indicated by an imaginary line is used. Corresponding.

By taking such measures, the distance from the opening end surface of the balance weight 1 to the controller mounting surface, that is, the controller 7 and the controller case 9
The distance to the subweight 5, which is a substantial mounting surface of the vehicle, can be set to be constant regardless of the difference in vehicle size. Since the distance is made constant, the distance from the step surface of the peripheral edge of the weight opening to the end surface of the case opening becomes constant, so that the rear cover 12 has the same size regardless of the difference in the vehicle size. 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 constant regardless of the difference in vehicle size, maintenance work for the controller is facilitated, and the controller-related parts including the rear cover are It is possible to use exactly the 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,
The trouble of removing and attaching the cover during maintenance can be reduced. 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 at the assembly line at present, and such tapping at present is inefficient, Moreover, since it is a process for a heavy object called a balance weight, there is a disadvantage that it is not preferable from the viewpoint of safe work, but according to the present invention, the cover is attached to the controller case side so that Such a problem can be solved.

[Brief description of the drawings]

FIG. 1 is a longitudinal 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 the vehicle classification is different;

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

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Body frame 2 ... Frame back plate 3 ... Balance weight 4 ... Cavity part 5 ... Sub weight 7 ... Controller 8 ... Base plate 9 ... Controller case 12 ... Rear cover 13 ... Seal part

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-61-75794 (JP, A) JP-A-5-3298 (JP, U) JP-A 1-111695 (JP, U) JP-A 55-298 160943 (JP, U) JP 55681 (JP, U) JP 5 29882 (JP, U) JP 4 114886 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B60R 11/00 B66F 9/075

Claims (2)

(57) [Claims] 1. A controller storage structure for storing a controller in a cavity formed by penetrating a balance weight at a rear portion of a vehicle body in a front-rear direction, wherein the controller is provided.
Is a frame back located in front of the balance weight.
Controller storage structure of the battery forklift has a structure which is fixed by interposing a plate-shaped sub-weight with respect to the plate. 2. The battery forklift according to claim 1,
The controller storage structure of the
A controller case is provided, and at the rear open end of the controller case, an outer peripheral edge can be brought into contact with a weight opening peripheral edge of the balance weight, and a case opening is provided at an inner peripheral side of the outer peripheral edge. controller storage structure Bas Tsu Teri forklift fitted with rear cover having a contact capable of sealing portion on the end surface by a bolt.