JP2006062859A - Electrical component cover of electric forklift - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrical component cover of an electric forklift capable of efficiently performing the inspection and maintenance and replacement of a battery, and the maintenance of a control apparatus. <P>SOLUTION: The electrical component cover of the electric forklift is provided with a support column 4 of a head guard 3 at the rear part of a driver's seat 2, battery box 6 storing the battery 5, a bulkhead board 10 at the rear side, a control apparatus 14 on the bulkhead board, and a space part 15 between the bulkhead board and a counter weight 13, and the upper side of the battery box and the space part are covered. The cover 17 can be opened/closed through the supporting shaft 21 provided on the support column. The rear part end surface 17m extending to the rear part from the rear end surface 4b of the support column by notching around the support column is brought close to along the counter weight, and the upper side of the battery box and the space part including the control apparatus is integrally covered. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an improvement of an electrical component cover that covers a battery and a control device of an electric forklift.

Conventionally, as shown in FIGS. 7 and 8, for example, a storage structure for a controller (control device) of a battery forklift (electric forklift) in which a battery is mounted and a cargo handling operation is performed using the power supply is known. It has been. That is, in the controller storage structure of the battery forklift, the plate-like back plate 51 disposed substantially perpendicular to the vehicle front-rear direction and the vehicle front side of the controller 50 is substantially perpendicular to the vehicle left-right direction. The two plate-like rear side plates 52 arranged on the left and right sides of the controller in contact with the plate, and the vehicle upper and lower ends of the back plate and the two rear side plates are arranged in the vehicle longitudinal direction. A plate-like controller plate 54 having a flange portion and an elastic body 53 extending in the left-right direction of the vehicle formed on the upper side surface portion of the vehicle, a vehicle rear side end portion of the controller plate, and a stepped portion of the counterweight 55. An elastic body 56 is provided, and the elastic body 56 and the elastic body 53 of the controller plate are Then, the plate-shaped controller cover 57 that presses the controller plate 54 downward and the top panel 58 and the controller plate 54 that are arranged below the seat of the forklift press the controller plate downward. There is one provided with an elastic body 59 (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 5-112259 (paragraph number 0007, FIGS. 1 and 2)

  However, the controller storage structure of the battery forklift shown in FIGS. 7 and 8 includes a top panel 58 disposed on the upper side of the battery, and a controller cover 57 disposed substantially flush with the top panel on the rear side of the top panel. In addition, the controller 50 includes a controller plate 54 on the upper side and a rear side plate 52 in which ventilation holes 61 are formed on the left and right sides. Therefore, when performing maintenance of the controller (inspection and rare adjustments), the left and right tightening knobs 60, the controller cover 57, the top panel 58, the controller plate 54, etc., which are tightening the controller cover 57, are respectively removed. It takes a lot of time to detach it. In addition, there is a step at the joint (gap) between the rear end surface of the top panel 58 and the front end surface of the controller cover 57, which may impair the appearance.

  In view of the above-described conventional problems, an object of the present invention is to provide an electrical component cover for an electric forklift that can efficiently perform maintenance, replacement, and maintenance of a control device.

  According to the first aspect of the present invention, the head guard column is arranged substantially vertically in the rear part of the driver's seat, the battery box containing the battery, and the partition plate on the rear side thereof are provided. In the electrical component cover of the electric forklift, in which a device is provided, a space is formed between the partition plate and the counterweight, the battery box and the space are covered and the driver's seat is supported, The cover is openable and closable via a support shaft provided on the support column, a rear end surface extending rearward from the rear end surface of the support column is notched around the support column so as to be close to the counterweight, and the battery box The upper part of the space part including the control device is integrally covered.

  By doing so, the upper side of the battery box and the space including the control device are integrally covered with the cover, and the rear end face of the cover is close to the counterweight so that the cover is opened. By doing so, the battery and the control device can be visually observed from above, and the inspection and maintenance and replacement of the battery and the maintenance of the control device can be performed efficiently.

  As described in claim 2, it is desirable that a recess for supporting the driver's seat is formed at a center front portion of the cover in the vehicle left-right direction.

  By forming the recess in the cover in this manner, the strength of the cover can be increased and the driver's seat can be supported, and the appearance is further improved.

  According to a third aspect of the present invention, the cover is inclined so as to follow the column when the cover is fully opened, and its rear end surface is located below the upper end surface of the counterweight, and is above or above the upper surface of the control device. It is desirable to hold them in approximately the same position.

  In this way, when the cover is opened to the maximum, the cover tilts along a support column that is arranged substantially vertically, and the rear end face of the tilted cover is above the upper surface of the control device or If it is held at substantially the same position as the upper surface, a gap is formed between the counterweight and the control device can be visually observed through the gap, so that maintenance of the control device can be performed efficiently.

Since the invention of claim 1 covers the upper side of the battery box and the space including the control device integrally with the cover,
(1) The cover can be integrated with a simple structure and can be easily opened and closed.
(2) Therefore, inspection and maintenance and replacement of the battery and maintenance of the control device can be facilitated, and maintenance work can be performed efficiently.
(3) Appearance on the appearance will be good.
(4) Rainwater can be prevented from entering the control equipment.
(5) Manufacturing cost can be reduced.

As described in claim 2, if the concave portion that supports the driver's seat is formed in the center front portion of the cover in the vehicle left-right direction,
(1) Since the strength of the cover increases and there is no need to provide a reinforcing member for supporting the driver's seat, the weight and manufacturing cost can be reduced.
(2) The appearance is improved.

As described in claim 3, when the cover is inclined so as to be along a support column arranged in a substantially vertical direction at the time of maximum opening,
(1) The upper part of the battery and the control device can be visually observed.
(2) Accordingly, inspection and maintenance and replacement of the battery can be facilitated, and maintenance work can be performed efficiently.

Furthermore, if the rear end surface of the inclined cover is held above the upper surface of the control device or substantially the same position as the upper surface,
(3) The control device can be visually observed from the gap generated between the counterweight.
(4) Accordingly, maintenance of the control device can be facilitated, and maintenance work can be performed efficiently.

  The best mode for carrying out the present invention will be described below with reference to the drawings. 1 (a) is a schematic left side view of an electric forklift according to the embodiment of the present invention, FIG. 1 (b) is a plan view as viewed in the direction of arrows AA in FIG. 1 (a), and FIG. ) Is a cross-sectional view taken in the direction of arrows B-B, and the counterweight is indicated by diagonal lines. FIG. 3 is a cross-sectional view taken in the direction of arrows C-C in FIG. Respectively.

  As shown in FIGS. 1 to 3, the electric forklift 1 is provided with a head guard 3 on the upper side of the driver's seat 2, and a support post 3 a on the front side thereof is formed continuously with the head guard 3 and in front of the driver's seat 2. The left and right ones are arranged on the side, and the rear support column 4 is arranged on the rear part of the driver's seat 2 in the substantially vertical direction. A battery box 6 that houses a battery 5 is disposed below the driver's seat 2. That is, the battery 5 has a required number of cells, and the battery box 6 for storing the cells surrounds the front and rear, left and right and bottom of the battery 5 with steel plates having a required thickness, and approaches the vehicle width in the left and right direction of the vehicle. It is formed in a substantially rectangular parallelepiped with such a length. Also, two holes 6a for lifting the battery box are provided in the front and rear direction above the left and right end surfaces. The battery box 6 is supported by a flat lower frame 7 of the vehicle 1a via a receiving member 8 having a box-shaped cross section, and the receiving members are provided at two locations apart in the front-rear direction.

  A front wall plate 9 is disposed on the front side of the battery box 6 and a partition plate 10 is disposed on the rear side so as to be close to the front and rear of the battery box, and is fixed to the lower frame 7. A floor plate 11 is fixed to the front wall plate 9, and a flat rear frame 12 is fixed to the partition plate 10. The lower end 4a of the column 4 is in contact with the upper surface of the rear frame 12 and is fastened with bolts to a bracket (not shown) fixed to the rear frame. A counterweight 13 which will be described later is also supported by the bracket and is fastened to the rear frame side with bolts. Here, “each component member is fixed” means, for example, being fixed by welding.

  Next, a control device (controller) 14 is provided on the back surface of the partition plate 10 provided on the rear side of the battery box 6. The control device 14 is a device that controls a travel motor of the vehicle 1a, a hydraulic device for a cargo handling device (not shown), and the like, and is formed in a substantially rectangular parallelepiped that is long in the left-right direction of the vehicle. The control device is provided with mounting flanges 14a (FIG. 1 (b)) on the left and right sides and fastened to the back surface of the partition plate by bolts at appropriate vertical positions.

  A counterweight 13 is disposed at the rear of the vehicle 1a, and a space 15 is formed between the inner surface 13a of the counterweight and the partition plate 10. A pair of left and right side cover plates 16L and 16R (FIGS. 1A and 3) that integrally cover the side surfaces of the battery box 6 and the space portion 15 are arranged on the left and right sides of the vehicle 1a, respectively.

  Furthermore, an electric component cover (hereinafter referred to as a cover) 17 is provided in the electric forklift 1 so as to integrally cover the upper side of the battery box 6 and the space 15 including the control device 14. Here, the electrical components refer to the battery 5 housed in the battery box 6 and the control device 14 included in the space 15. The configuration of the cover 17 will be described below with reference to FIGS. 2 and 3 and the perspective view of FIG.

  The cover 17 covers the upper part such as the space 15 including the battery box 6 and the partition plate 10 and the control device 14 on the rear side from the front wall plate 9 in the front-rear direction of the vehicle 1a, and its rear end face 17m is a counter. It extends so as to be close to the front upper end 13b of the weight, and is configured integrally so as to cover from the left side cover plate 16L to the right side cover plate 16R in the left-right direction of the vehicle. It has a smooth curved upper surface 17a in the front-rear direction, its front end portion 17b is rounded in a semicircular shape (FIG. 2), and the left-right end surface 17c is bent downward in the left-right direction. A corner portion 17i between 17c and the upper surface 17a is also formed so as to be connected in a semicircular shape (FIG. 3), and has an overall swollen shape. Further, the left and right side end surfaces 17c are formed so that the rear end portion 17n (FIGS. 2 and 4) is connected to the upper surface 17a with a smooth curve in a side view.

  Further, a concave portion 17e having a step from the upper surface 17a to the lower side is formed in the center front portion 17d in the left-right direction of the cover 17, so that the driver's seat 2 can be supported. The concave portion 17e is connected to a rear bottom surface portion 17f that is substantially horizontal in the front-rear direction and a front bottom surface portion 17g that is inclined slightly downward in front of the concave portion 17e. Yes. Such a cover 17 is integrally formed by a press using a steel plate having a required thickness, for example. A rubber 18 for pressing the upper end surface of the front wall plate 9 is attached to the inside of the front end portion 17b of the cover, and a watertight seal member (weather strip) 19 is attached to the rear end portion 17h. Intrusion of water into the portion 15 is prevented.

A support frame (not shown) of the driver's seat 2 is placed on the upper surface of the rear bottom surface portion 17f of the recess 17e and tightened with bolts and nuts, and the driver's seat 2 is supported via the support frame.
Thus, since the cover 17 is integrally formed and the recess 17e is formed, the inspection, maintenance and replacement of the battery and maintenance of the control device can be efficiently performed by opening the cover. Further, since the strength of the cover can be increased and the driver's seat 2 can be supported, the weight and manufacturing cost can be reduced without providing a separate reinforcing material, and the appearance can be improved.

  Next, the rear part of the cover 17 will be described with reference to FIGS. FIG. 5 shows a detailed view of a portion D in FIG. The left and right rear portions are formed with support pieces 20 for supporting the cover 17 and notches for opening and closing via the support shaft 21 around the support columns. That is, the support piece 20 is fixed to the inner notch 17k, which will be described later, on the upper surface 17a of the cover in a substantially vertical direction, and the support shaft 21 that rotatably supports the support piece 20 is supported above the upper end surface 13c of the counterweight. 4 is provided on the inner side surface 4c. The support piece 20 is a substantially triangular flat plate, and is provided with a hole 20a for inserting the support shaft 21 in the upper part. The support shaft 21 is, for example, a bolt shape, and a screw portion 21a at the tip is implanted and fixed to the support column 4 to fix the shaft below the bolt neck. It is formed so that the hole 20a of the support piece rotates around the portion 21b. A seat plate 21c is inserted into the shaft portion 21b to fill a gap between the outer side surface of the support piece 20 and the inner side surface 4c of the support column. In this manner, the cover 17 can be opened and closed by rotating in the vertical direction via the support shaft 21.

  Furthermore, the cover 17 forms an outer notch 17h, a front notch 17j, and an inner notch 17k around the column 4 located on the vehicle inner side from the left and right end faces 17c in plan view, and the inner notch 17k A rear end surface 17m extending rearward from the rear end surface 4b of the support column 4 extends rearward in close proximity along the front upper end portion 13b of the counterweight, thereby securing a required gap S. Note that the left and right rear end faces 17p of the cover are also close to the left and right front end faces 13c of the counterweight to ensure a clearance S. Further, as shown in FIG. 4, a hook 22 used for opening and closing the cover is provided on the right side of the front end portion 17 b of the cover 17. One hook 22a of the hook is attached to the inner side of the front end portion 17b, and the other holding fitting 22b is attached to the front wall plate 9, respectively. Accordingly, when the cover is opened, the cover can be opened by a simple operation of simply releasing the engagement between the holding metal fitting and the hook, and the cover can be opened and closed by a one-touch operation.

  Next, the opening of the cover 17 will be described with reference to FIG. FIG. 6 is a cross-sectional view taken along arrow BB in FIG. 1B when the cover is fully opened, and the stopper member 23 is indicated by a one-dot chain line.

  As shown in FIG. 6, the cover 17 is rotationally opened upward via a support shaft 21 provided on the support column 4, and tilts along the support column 4 when the cover 17 is fully opened. The rear end surface 17m of the cover is located below the upper end surface 13c of the counterweight, and is held above the upper surface 14b of the control device 14 or at substantially the same position as the upper surface 14b. In the present embodiment in which the support shaft 21 is above the upper end surface 13c of the counterweight, for example, in the case of the electric forklift 1 having a load of 1600 kg to 1800 kg, the upper surface 14b of the control device and the rear end surface 17m (right and left) of the cover The gap Y between the counterweight front upper end 13b and the cover upper surface 17a on the horizontal line (PP) passing through the upper end surface 13c of the counterweight is 50 mm. 110mm that can be maintained is secured. A stopper member 23 is provided on the right side of the cover for maintaining the inclination of the cover 17 when the cover is fully opened. The stopper member 23 extends in the axial direction when the cover is fully opened and shortens when the cover is closed. is there. One lower portion of the stopper member 23 is rotatably supported via a lower support member 23 a provided on the front surface portion 4 d of the right column 4, and the other upper portion is an upper support member 23 b provided inside the cover 17. It is rotatably supported through

  As described above, when the cover 17 is fully opened, the driver (operator) or the maintenance worker can see the battery 5 and the control device 14 stored in the battery box 6 from above. Accordingly, inspection, maintenance and replacement work such as battery voltage measurement and battery liquid replenishment can be facilitated, and maintenance work can be performed efficiently. Further, the control device 14 can be visually observed from the gap Z between the cover upper surface 17a and the front upper end portion 13b of the counterweight. Therefore, for example, the following maintenance can be easily performed by inserting a hand. That is, it is possible to confirm the blinking state of the LED lamp of the control device by detaching the fastening bolts (four places on the left and right and up and down) of the cover plate 14c covering the rear part of the control device 14 and the cover plate 14c. Since maintenance can be easily performed in this way, maintenance work can be performed efficiently. In the embodiment of the present invention, the cover 17 is made of a steel plate, but a material other than the steel plate, such as a hard resin, may be used.

FIG. 1A is a left side schematic side view of an electric forklift according to the embodiment of the present invention, and FIG. 1B is a plan view taken in the direction of arrows AA in FIG. Sectional drawing of the BB direction arrow of FIG.1 (b) is shown. Sectional drawing of CC direction arrow of Fig.1 (a) is shown. The perspective view of a cover is shown. FIG. 1B is a detailed view of a portion D in FIG. Sectional drawing of the BB direction arrow of FIG.1 (b) at the time of a cover maximum open | release is shown. The schematic side view of the controller storage structure of the conventional battery forklift is shown. The schematic top view of the controller storage structure of the conventional battery forklift is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric forklift 2 Driver's seat 3 Head guard 4 Support | pillar 4b Rear end face of support 5 Battery 6 Battery box 10 Bulkhead plate 13 Counterweight 13c Upper end face of counterweight 14 Control equipment 14b Upper surface of control equipment 15 Space part 17 Electrical component cover ( cover)
17d Center front part of cover 17e Concave part of cover
17m Rear end face of cover 21 Support shaft

Claims (3)

A head guard column is arranged substantially vertically in the rear part of the driver's seat, a battery box containing a battery and a partition plate on the rear side thereof are provided, and the partition plate is provided with a vehicle control device, In the electrical component cover of the electric forklift in which a space is formed between the plate and the counterweight, the battery box and the space are covered and the driver's seat is supported,
The cover is openable and closable via a support shaft provided on the support column, a rear end surface extending rearward from the rear end surface of the support column is notched around the support column so as to be close to the counterweight, and the battery box And an electrical component cover of the electric forklift, wherein the electrical component cover is configured to integrally cover an upper side of the space including the control device.   The electrical component cover for an electric forklift according to claim 1, wherein a concave portion for supporting the driver's seat is formed in a central front portion of the cover in the left-right direction of the vehicle. The cover is inclined along the support column when fully opened, and its rear end face is located below the upper end face of the counterweight, and is held above or substantially the same position as the upper face of the control device. The electric component cover of the electric forklift according to claim 1 or 2, wherein the electric component cover is provided.

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